CN120426786B - Butadiene vaporization device - Google Patents

Abstract

The invention discloses a butadiene vaporizing device, which comprises a water bath type vaporizer, wherein a liquid inlet pipe for entering butadiene liquid is fixed at the top end of a tank body of the water bath type vaporizer, the butadiene vaporizing device also comprises a cross flow mixing pipe mechanism, a venturi mixing pipe mechanism and a spin-separating mixing pipe mechanism, the cross flow mixing pipe mechanism, the venturi mixing pipe mechanism and the spin-separating mixing pipe mechanism are arranged between the water bath type vaporizer and a static mixer for vaporizing butadiene, the invention effectively inhibits the addition polymerization reaction of butadiene in the vaporization process and reduces the blockage of a polymer to a pipeline by obviously improving the mixing effect of the polymerization inhibitor and the butadiene, thereby ensuring the normal operation of a water bath type vaporizer and improving the vaporization treatment efficiency of the butadiene.

Description

Butadiene vaporization device

Technical Field

The invention relates to the technical field of butadiene vaporization, in particular to a butadiene vaporization device.

Background

Butadiene is an important organic chemical raw material and synthetic rubber monomer, and is gas at normal temperature and pressure, liquefied or solidified and then vaporized, so that the butadiene is convenient to transport and store under specific conditions, for example, liquefied under high pressure and low temperature, stored in a special storage tank or tank truck, and converted into gas state through vaporization after being transported to a use place, so that the subsequent use is facilitated, the gas butadiene can be accurately metered and conveyed through a flow control device, the dosage of the gas butadiene in the reaction is convenient to be accurately controlled, and the gas butadiene is very important for ensuring the consistency of chemical reaction and the stability of product quality;

during the vaporization processing of butadiene, a water bath type vaporizer is selected for the production of butadiene vaporization, and the principle of the water bath type vaporizer for butadiene vaporization is based on indirect heat exchange and phase change control, namely shell side hot water (60-90 ℃) transfers heat to tube side liquid butadiene through a fin tube or a spiral groove tube, so that the tube side liquid butadiene is heated to the boiling point (about 25 ℃ when the temperature is 0.5 MPa) under the operating pressure, and the vaporization latent heat (about 389 kJ/kg) is absorbed and converted into a gas phase. The stable vaporization is ensured by hot water constant temperature control (+ -1 ℃) and superheat degree adjustment (the outlet temperature is 5-10 ℃ higher than the boiling point).

At present, when butadiene is gasified, the butadiene is subjected to addition polymerization reaction between butadiene molecules in the internal gasification process of a water bath type gasifier under the condition of temperature, pressure and the like, so that a polymer blocking a pipeline is easy to form, and in the butadiene gasification process, the generation of the polymer is usually inhibited by adding a polymerization inhibitor to react with butadiene free radicals, but when the polymerization inhibitor is added into the water bath type gasifier, the polymerization inhibitor is usually added into the water bath type gasifier through a simple static mixer, the internal mixing assisting structure of the static mixer is mainly provided with simple spiral blades, the mixing effect of the polymerization inhibitor and the butadiene is limited, so that the polymerization inhibition effect of the butadiene entering the internal gasification of the water bath type gasifier is poor, and the vaporization treatment efficiency of the water bath type gasifier on the butadiene is influenced.

Disclosure of Invention

The invention mainly aims to provide a butadiene vaporization device, the invention establishes a unique multistage mixing system by arranging a cross flow mixing pipe mechanism, a venturi mixing pipe mechanism and a cyclone mixing pipe mechanism between a water bath type vaporizer and a static mixer for butadiene vaporization, the cross flow mixing pipe mechanism, the venturi mixing pipe mechanism and the cyclone mixing pipe mechanism are combined to effectively assist efficient mixing of butadiene liquid and polymerization inhibitor, in the special cross flow mixing pipe mechanism, the butadiene liquid and polymerization inhibitor mixture flows along low dislocation plates, middle dislocation plates and high dislocation plates which are distributed in a staggered manner, simultaneously, a corrosion resistant air bag block can be controlled to expand, a liquid flowing path and a height drop are changed, the mixing effect is greatly improved, the venturi mixing pipe mechanism utilizes a venturi structure consisting of a conical diffusion pipe, a throat connecting pipe and a conical contraction pipe, the spiral flow guide in the throat connecting pipe promotes fluid to form spiral flow, a vibration motor in a box to generate vibration flow, the polymerization inhibitor is further promoted, the mixing of the butadiene liquid and the polymerization inhibitor is more uniform, the polymerization inhibitor is further promoted, the polymerization inhibitor is dispersed and the polymerization inhibitor is mixed with the polymerization inhibitor, the polymerization inhibitor is carried out in a mixing pipe, the polymerization inhibitor is further improved, and the quality of the polymerization inhibitor is obviously improved, and the polymerization inhibitor is mixed and mixed with the polymerization inhibitor is carried out in a proper mixing mode by the polymerization inhibitor, and the polymerization inhibitor is formed by a mixing basket through a dispersing pipe, and a proper mixing effect, and a polymerization inhibitor is formed by the polymerization inhibitor, and a dispersing and a polymerization inhibitor, and a proper polymerization device through a dispersing plate, and a polymerization effect is formed by the polymerization device, improves the vaporization treatment efficiency of butadiene and can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

The utility model provides a butadiene vaporization unit, includes the water bath formula vaporizer, the jar body top of water bath formula vaporizer is fixed with the feed liquor pipe that is used for butadiene liquid to get into, still includes cross flow mixing pipe mechanism, venturi mixing pipe mechanism and divides the rotatory mixing pipe mechanism, cross flow mixing pipe mechanism that is used for butadiene liquid and polymerization inhibitor circuitous mixing is installed to feed liquor pipe top intercommunication, and the venturi mixing pipe mechanism that is used for butadiene liquid and polymerization inhibitor vibration flow to gather mixing is installed to cross flow mixing pipe mechanism's top intercommunication, venturi mixing pipe mechanism's top welding intercommunication has and is used for connecting outside static mixer to carry out the branch of butadiene liquid and polymerization inhibitor basket bulk disk flow to gather the rotatory mixing pipe mechanism that mixes.

Further, the cross flow mixing pipe mechanism comprises an upper cone guiding pipe, a low dislocation plate, a middle dislocation plate, a high dislocation plate, a corrosion-resistant air bag block and a pair-penetrating pipe, wherein a flange base plate is welded outside the bottom pipe body of the upper cone guiding pipe and is connected with the pipe body flange of the liquid inlet pipe in a flange mode, the low dislocation plate, the middle dislocation plate and the high dislocation plate are welded in a staggered mode from bottom to top in the conical pipe cavity of the upper cone guiding pipe, the upper plate surfaces of the low dislocation plate and the middle dislocation plate are adhered and supported with the corrosion-resistant air bag block for expanding and lifting, and the pair-penetrating pipe for penetrating out of the upper cone guiding pipe to perform ventilation is fixedly communicated with the two ends of the block of the corrosion-resistant air bag block;

By adopting the above preferred technical scheme, after the flange base plate is welded below the upper cone lead pipe, bolts can be penetrated between the flange base plate and the pipe body flange plate of the liquid inlet pipe, and the screwed nuts are matched at the bolts, so that the flange connection between the flange base plate and the liquid inlet pipe is realized, the lower dislocation plate, the middle dislocation plate and the high dislocation plate are distributed in the upper cone lead pipe where the flange base plate is positioned, the corrosion resistant air bag blocks adhered to the surfaces of the lower dislocation plate and the middle dislocation plate can be ventilated and expanded, then the equipment for providing compressed gas for the outside is connected with the aid of the air valve after the penetrating pipe of the corrosion resistant air bag blocks penetrates out of the upper cone lead pipe, the corrosion resistant air bag blocks can be exhausted or fed with the aid of two groups of pipe bodies of the penetrating pipe, the corrosion resistant air bag blocks can be conveniently controlled to expand, after the butadiene liquid and polymerization inhibitor mixture enter the upper cone lead pipe, the butadiene liquid and the polymerization inhibitor mixture can flow downwards along the high dislocation plate, the corrosion resistant air bag blocks of the lower dislocation plate and the middle dislocation plate can be controlled to expand, and the temperature resistant air bag blocks of the lower dislocation plate and the middle dislocation plate can be controlled to be raised, and the temperature of the mixture of the low dislocation plate and the temperature and the polymerization inhibitor can be improved when the temperature of the mixture is caused by the roundabout the dislocation effect of the dislocation plate and the dislocation is changed.

Further, a rubber gasket is crimped between the flange base plate below the upper cone guide pipe and the liquid inlet pipe, and a sheet hole vertically communicated with a hole site on the surface of the flange base plate is formed in the surface of the rubber gasket;

through adopting above-mentioned preferred technical scheme, when last awl guide tube is connected with the feed liquor pipe with the help of flange base plate, can impress the rubber gasket between the flange of flange base plate and feed liquor pipe to improve the leakproofness, prevent butadiene liquid and polymerization inhibitor leakage.

Further, the conical tube body of the upper conical guide tube is symmetrically provided with penetrating holes, opposite penetrating tubes are penetrated and extended in the penetrating holes, and the opposite penetrating tubes are adhered and fixed with the wall of the penetrating holes;

Through adopting above-mentioned preferred technical scheme, can alternate the bonding to the poling in the dress hole department of wearing of last awl guide tube, make corrosion resistant gasbag piece can ventilate with the external world, realize its inflation and shrink function to the fluid state in the upper awl guide tube is adjusted better, the optimization mixes the effect.

Further, the top end of the upper cone guide tube is rotatably connected with a rotary tube provided with a Venturi tube mixing mechanism, the Venturi tube mixing mechanism comprises a rotary tube, a cone diffusion tube, a throat connecting tube, a cone shrinkage tube, a spiral guide piece, a round head entering box and a vibration motor, the rotary tube is welded in the lower tube opening of the cone diffusion tube, the upper end shrinkage tube opening of the cone diffusion tube is communicated with the lower end shrinkage tube opening of the cone shrinkage tube through the throat connecting tube in a welding manner, the inside of the tube body of the throat connecting tube is inserted and welded with the round head entering box for protruding shrinkage diameter in the tube body, and the round head entering box is internally provided with the vibration motor;

through adopting above-mentioned preferred technical scheme, the circular cone diffuser of venturi mixing tube mechanism can connect the installation with the help of the screwed pipe in last conical guide tube, then the circular cone shrink tube that the circular cone diffuser was connected with the throat connecting tube can accept butadiene liquid and polymerization inhibitor mixture and get into, butadiene liquid and polymerization inhibitor mixture can be through the throat connecting tube entering circular cone diffusion pole and diffuse after converging the mixture along the circular cone shrink tube shrink, circular cone diffuser, throat connecting tube and circular cone shrink tube constitute venturi structure, according to venturi effect, the velocity of flow increases when the fluid passes through the throat connecting tube, pressure reduces, can fully mix polymerization inhibitor and butadiene liquid mixture, and the spiral water conservancy diversion piece in the throat connecting tube can make polymerization inhibitor and butadiene liquid mixture fluid form the spiral flow, further increase the mixing effect, and there is the button to stretch into in the pipe in the throat connecting tube in the button head income box, the vibrating motor in the button head income box can connect electric vibration, polymerization inhibitor and butadiene liquid mixture fluid in the throat connecting tube produce the shake flow, promote the polymerization of butadiene liquid and polymerization inhibitor, make the mixing more even.

Further, an L-shaped hooking groove is symmetrically formed in the vertical wall of a box cavity at one side of the round head box, an L-shaped hooking strip welded on the side face of a side connecting plate is clamped in the L-shaped hooking groove, a round head supporting plate used for being pressed in the round head box is welded below a plate body of the side connecting plate, the surface of the round head supporting plate is locked with a vibrating motor through a bolt, a plate hole used for inserting a bolt inwards is formed between the box body of the round head box-in exposed throat connecting pipe and the side connecting plate, and the bolt penetrates through a bolt body of the side connecting plate to be screwed with a nut;

Through adopting above-mentioned preferred technical scheme, vibrating motor is behind button head layer board surface mounting, button head layer board cooperation side even board pushes away in the button head goes into the box, and the side even board is with L shape hook guide strip in the L shape hook guide slot of button head income box direction clamping simultaneously, makes things convenient for the button head layer board to bring vibrating motor into the button head and goes into in the box and provide the vibration source, for vibrating flow gathering and mixing and provide power, simultaneously, this kind of mounting means is convenient for vibrating motor's maintenance and change.

Further, the conical shrinkage tube above the throat connecting tube is communicated and welded in the primary connecting tube of the rotary-splitting mixing tube mechanism, the rotary-splitting mixing tube mechanism comprises a primary connecting tube, a conical top shrinking tube, a scattering ring, a supporting ring, a spiral disc flow piece and a conical dispersing basket, a flange connecting disc is welded at a tube orifice of the top end of the primary connecting tube far away from the throat connecting tube, a rubber gasket is pressed on the surface of the flange connecting disc, the supporting ring and the spiral disc flow piece are sequentially welded in the primary connecting tube below the flange connecting disc from top to bottom, the scattering ring is supported on the surface of the supporting ring, the conical dispersing basket is arranged inside the scattering ring, and the conical top shrinking tube is arranged inside the primary connecting tube above the scattering ring in a rotating manner;

Through adopting above-mentioned preferred technical scheme, divide first takeover that revolves mixed pipe mechanism can be connected with circular cone shrink tube welding intercommunication, then just take over in the takeover with the backing ring can support and connect the loose ring, dispose circular cone dispersion basket in the loose ring, just then just take over in the takeover that is last can connect the installation circular cone top shrink tube soon, just take over the top with the flange joint butadiene that disposes the rubber gasket with polymerization inhibitor mixing commonly used static mixer, make butadiene and polymerization inhibitor mix in can getting into first takeover after adding the mixture in static mixer, firstly collect butadiene liquid and polymerization inhibitor mixture with circular cone top shrink tube in the takeover, butadiene liquid and polymerization inhibitor mixture realize basket dispersion formula liquid dispersion in circular cone dispersion basket and loose ring department, then make butadiene liquid and polymerization inhibitor mixture fluid form the dish flow by spiral dish fluid again, further mix evenly with butadiene liquid and polymerization inhibitor mixture.

Further, a tray is welded at the inner annular wall of the dispersion ring through a spike connecting plate, a conical dispersion basket is supported on the surface of the tray, the lower part of a basket body of the conical dispersion basket is welded in the dispersion ring through a cylinder, a rectangular basket groove is formed in the conical surface of the basket body of the conical dispersion basket, and the diameter of the ring body of the dispersion ring is smaller than the diameter of a tube cavity of the primary connecting tube;

through adopting above-mentioned preferred technical scheme, the inside spike link plate welding tray that links in the dispersion ring can support and connect the circular cone dispersion basket, and circular cone dispersion basket can realize firmly connecting with the help of the scattered ring of cylinder welding simultaneously, and the basket body department of circular cone dispersion basket has the basket groove of rectangle simultaneously can disperse butadiene liquid and polymerization inhibitor mixture fluid and carries out supplementary mixing.

Further, threads for mutual screwing are arranged at the inner pipe wall of the primary connecting pipe above the loose ring and the outer pipe wall of the conical top shrinkage pipe, and a cross rod is welded in a straight pipe cavity of the conical top shrinkage pipe;

through adopting above-mentioned preferred technical scheme, can connect soon in the circular cone top draw and install in just taking over, and circular cone top draw department has the horizontal pole to hold by the staff, makes things convenient for circular cone top draw to connect soon in just taking over the operation.

Compared with the prior art, the invention has the following beneficial effects:

According to the invention, a unique multistage mixing system is constructed by arranging the cross-flow mixing pipe mechanism, the Venturi mixing pipe mechanism and the branch rotary mixing pipe mechanism between the water bath type vaporizer for vaporizing butadiene and the static mixer, so that efficient mixing of butadiene liquid and polymerization inhibitor is effectively assisted;

In the special cross flow mixing pipe mechanism, the butadiene liquid and polymerization inhibitor mixture flows along the low dislocation plate, the middle dislocation plate and the high dislocation plate which are distributed in a staggered way, and meanwhile, the corrosion resistant air bag block can be controlled to bulge and expand, so that the flowing path and the height drop of the liquid are changed, and the mixing effect is greatly improved;

Meanwhile, the venturi mixing tube mechanism of the invention utilizes a venturi structure composed of the conical diffusion tube, the throat connecting tube and the conical contraction tube to realize the full mixing of the polymerization inhibitor and the butadiene liquid, the spiral flow guide piece in the throat connecting tube promotes the fluid to form spiral flow, the vibrating motor with the round head in the box generates vibrating flow, the polymerization mixing of the butadiene liquid and the polymerization inhibitor is further promoted, and the more uniform mixing is ensured;

Finally, the spinning mixing pipe mechanism firstly collects the mixture of the butadiene liquid and the polymerization inhibitor through the conical top shrinkage pipe, then achieves basket dispersion type liquid dispersion at the conical dispersion basket and the dispersion ring, finally enables the mixture fluid to form a disc flow through the spiral disc flow piece, and further uniformly mixes the mixture of the butadiene liquid and the polymerization inhibitor, so that the mixing quality of the polymerization inhibitor and the butadiene is remarkably improved;

According to the invention, the mixing effect of the polymerization inhibitor and the butadiene is obviously improved, the addition polymerization reaction of the butadiene in the vaporization process is effectively inhibited, and the blockage of the pipeline by the polymer is reduced, so that the normal operation of the water bath type vaporizer is ensured, and the vaporization treatment efficiency of the butadiene is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a butadiene vaporization apparatus of the present invention.

Fig. 2 is a schematic diagram showing the separation of a liquid inlet pipe and a cross-flow mixing pipe mechanism of a butadiene vaporization device of the invention.

FIG. 3 is a schematic diagram showing the split of the cross-flow mixing pipe mechanism, the Venturi mixing pipe mechanism and the cyclone mixing pipe mechanism of the butadiene vaporizing device.

FIG. 4 is an exploded view of a cross-flow mixing tube mechanism of a butadiene vaporization apparatus of the present invention.

FIG. 5 is an exploded view of a venturi mixing mechanism of a butadiene vaporization apparatus of the present invention.

FIG. 6 is a cross-sectional view showing a venturi mixing mechanism of a butadiene vaporization apparatus of the present invention.

FIG. 7 is an exploded view of a split-spin mixing tube mechanism of a butadiene vaporization apparatus of the present invention.

FIG. 8 is a cross-sectional view showing a split-swirl mixing tube mechanism of a butadiene vaporization apparatus of the invention.

FIG. 9 is a schematic view showing the separation of a conical dispersion basket and a dispersion ring of a butadiene vaporization apparatus of the present invention.

FIG. 10 is a schematic diagram showing the separation of the side connecting plate and the round head of the butadiene vaporization apparatus of the present invention.

The water bath type vaporizer comprises a water bath type vaporizer, a liquid inlet pipe, a cross flow mixing pipe mechanism, a venturi mixing pipe mechanism, a 5-branch rotary mixing pipe mechanism, a flange base plate, a 7-upper cone guiding pipe, a 8-lower dislocation plate, a 9-middle dislocation plate, a 10-higher dislocation plate, a 11-corrosion resisting air bag block, a 12-pair perforating pipe, a 13-rubber gasket, a 14-penetrating hole, a 15-rotary pipe, a 16-cone diffusion pipe, a 17-throat connecting pipe, a 18-cone shrinkage pipe, a 19-spiral guide piece, a 20-round head box, a 21-side connecting plate, a 22-round head supporting plate, a 23-vibration motor, a 24-primary connecting pipe, a 25-flange plate, a 26-cone top shrinkage pipe, a 27-scattering ring, a 28-supporting ring, a 29-spiral disc flow piece, a 30-cone dispersion basket, a 31-tray, a 32-tip connecting plate.

Detailed Description

The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.

As shown in fig. 1-10, the butadiene vaporization device comprises a water bath type vaporizer 1, a liquid inlet pipe 2 for entering butadiene liquid is fixed at the top end of a tank body of the water bath type vaporizer 1, the butadiene vaporization device further comprises a cross flow mixing pipe mechanism 3, a venturi mixing pipe mechanism 4 and a branch rotary mixing pipe mechanism 5, the cross flow mixing pipe mechanism 3 for mixing butadiene liquid and polymerization inhibitor in a roundabout way is arranged at the top end of the liquid inlet pipe 2 in an intercommunicating manner, the venturi mixing pipe mechanism 4 for mixing butadiene liquid and polymerization inhibitor in a vibration flow mode is arranged above the cross flow mixing pipe mechanism 3 in an intercommunicating manner, and the branch rotary mixing pipe mechanism 5 for connecting an external static mixer to perform butadiene liquid and polymerization inhibitor in a scattering type disk flow mode is welded above the venturi mixing pipe mechanism 4.

The cross flow mixing pipe mechanism 3 comprises an upper cone lead pipe 7, a low dislocation plate 8, a middle dislocation plate 9, a high dislocation plate 10, a corrosion-resistant air bag block 11 and a pair of through pipes 12, wherein a flange base plate 6 is welded outside the bottom pipe body of the upper cone lead pipe 7, the flange base plate 6 is connected with the pipe body flange of the liquid inlet pipe 2 in a flange manner, the low dislocation plate 8, the middle dislocation plate 9 and the high dislocation plate 10 are welded in a staggered manner from bottom to top in the conical pipe cavity of the upper cone lead pipe 7, the upper plate surfaces of the low dislocation plate 8 and the middle dislocation plate 9 are adhered and supported with the corrosion-resistant air bag block 11 for expanding and rising, and the pair of through pipes 12 for ventilation penetrating out of the upper cone lead pipe 7 are fixed at the two ends of the block of the corrosion-resistant air bag block 11 in an intercommunication manner;

By adopting the above preferred technical scheme, after the flange base plate 6 is welded below the upper cone lead pipe 7, bolts can be penetrated between the flange base plate 6 and the pipe body flange plate of the liquid inlet pipe 2, and screw nuts are matched at the positions of the bolts, so that the flange connection between the flange base plate 6 and the liquid inlet pipe 2 is realized, the low dislocation plate 8, the middle dislocation plate 9 and the high dislocation plate 10 are distributed in the upper cone lead pipe 7 where the flange base plate 6 is positioned in a staggered manner, the corrosion-resistant air bag blocks 11 bonded on the surfaces of the low dislocation plate 8 and the middle dislocation plate 9 can be ventilated and expanded, then the opposite penetrating pipe 12 of the corrosion-resistant air bag blocks 11 penetrates out of the upper cone lead pipe 7 and then is connected with equipment for providing compressed gas by means of an air valve, so that the corrosion-resistant air bag blocks 11 can exhaust or intake by means of two groups of pipe bodies of the opposite penetrating pipe 12, the corrosion-resistant air bag blocks 11 are conveniently controlled to expand, and when a mixture of butadiene liquid and a polymerization inhibitor enters the upper cone lead pipe 7, the mixture of butadiene liquid and the polymerization inhibitor can flow down along the high dislocation plate 10, the middle dislocation plate 9 and the low dislocation plate 8, the temperature of the mixture of the butadiene liquid and the polymerization inhibitor can flow down the low dislocation plate 8 and the low dislocation plate 8, the temperature of the mixture can be controlled, and the temperature of the mixture of the polymerization inhibitor and the low dislocation plate 9 and the low dislocation plate 8 can change the temperature and the temperature is controlled, and the temperature of the mixture and the temperature of the mixture can be controlled.

A rubber gasket 13 is crimped between the flange base plate 6 below the upper cone guide tube 7 and the liquid inlet tube 2, and a sheet hole vertically communicated with a hole site on the surface of the flange base plate 6 is formed in the surface of the rubber gasket 13;

by adopting the above preferred technical scheme, when the upper cone guide tube 7 is connected with the liquid inlet tube 2 by means of the flange base plate 6, the rubber gasket 13 can be pressed between the flange base plate 6 and the flange of the liquid inlet tube 2, so that the tightness is improved, and the leakage of butadiene liquid and polymerization inhibitor is prevented.

Wherein, the conical tube body of the upper conical guide tube 7 is symmetrically provided with a penetrating hole 14, a pair of penetrating tubes 12 are penetrated and extended in the penetrating hole 14, and the pair of penetrating tubes 12 are adhered and fixed with the wall of the penetrating hole 14;

By adopting the above preferred technical scheme, the penetrating pipe 12 can be penetrated and bonded at the penetrating hole 14 of the upper cone guide pipe 7, so that the corrosion-resistant air bag block 11 can be ventilated with the outside, and the expansion and contraction functions of the corrosion-resistant air bag block are realized, thereby better adjusting the fluid state in the upper cone guide pipe 7 and optimizing the mixing effect.

The top end of the upper cone guiding tube 7 is screwed with a screwing tube 15 provided with a Venturi tube mixing mechanism 4, the Venturi tube mixing mechanism 4 comprises the screwing tube 15, a cone diffusing tube 16, a throat connecting tube 17, a cone shrinkage tube 18, a spiral guide piece 19, a round head entering box 20 and a vibration motor 23, the screwing tube 15 is welded in a lower tube orifice of the cone diffusing tube 16, the upper end shrinkage tube orifice of the cone diffusing tube 16 is communicated with the lower end shrinkage tube orifice of the cone shrinkage tube 18 through the throat connecting tube 17 in a welding manner, the inside of the tube body of the throat connecting tube 17 is inserted and welded with the round head entering box 20 for protruding shrinkage in the tube body, and the round head entering box 20 is internally provided with the vibration motor 23;

By adopting the above preferred technical scheme, the conical diffusion tube 16 of the venturi mixing tube mechanism 4 can be rotationally installed in the upper conical guide tube 7 by means of the screwing tube 15, then the conical shrinkage tube 18 connected by the conical diffusion tube 16 through the throat connecting tube 17 can receive the butadiene liquid and polymerization inhibitor mixture, the butadiene liquid and polymerization inhibitor mixture can enter the conical diffusion rod 16 for diffusion through the throat connecting tube 17 after being shrunk and mixed along the conical shrinkage tube 18, the conical diffusion tube 16, the throat connecting tube 17 and the conical shrinkage tube 18 form a venturi structure, according to the venturi effect, the flow speed of fluid is increased and the pressure is reduced when the fluid passes through the throat connecting tube 17, the polymerization inhibitor and the butadiene liquid mixture can be fully mixed, the spiral flow guide piece 19 in the throat connecting tube 17 can enable the polymerization inhibitor and the butadiene liquid mixture fluid to form spiral flow, the mixing effect is further increased, the throat connecting tube 17 is provided with a round head box 20 extending into the tube, the vibration motor 23 in the round head box 20 can be electrically vibrated, the polymerization inhibitor and the butadiene liquid mixture fluid in the throat connecting tube 17 can generate vibration flow, the polymerization inhibitor and the polymerization inhibitor in the throat connecting tube 17 can be more uniformly mixed.

The vertical wall of one side box cavity of the round head box 20 is symmetrically provided with L-shaped hooking grooves, L-shaped hooking guide bars welded on the side surfaces of the side connecting plates 21 are clamped in the L-shaped hooking grooves, round head supporting plates 22 used for being pressed in the round head box 20 are welded below the plate bodies of the side connecting plates 21, the surfaces of the round head supporting plates 22 are locked with vibrating motors 23 through bolts, plate holes used for inwards inserting the bolts are formed between the box bodies of the round head box 20, which expose the throat connecting pipes 17, and the side connecting plates 21, and the bolts penetrate through bolt bodies of the side connecting plates 21 to be screwed with nuts;

Through adopting above-mentioned preferred technical scheme, vibrating motor 23 is behind button head layer board 22 surface mounting, button head layer board 22 cooperation side link plate 21 pushes into button head and goes into in box 20, and simultaneously side link plate 21 is with the L shape hook guide strip in the L shape hook guide slot direction clamping that the box 20 was gone into to the button head, makes things convenient for button head layer board 22 to get into the button head with vibrating motor 23 and goes into in box 20 and provide the vibration source, provides power for vibration flow gathering, simultaneously, this kind of mounting means is convenient for the maintenance and the change of vibrating motor 23.

The conical shrinkage tube 18 above the throat connecting tube 17 is welded in an initial connecting tube 24 of the rotary mixing tube separating mechanism 5 in an intercommunication way, the rotary mixing tube separating mechanism 5 comprises an initial connecting tube 24, a conical top shrinking tube 26, a scattering ring 27, a supporting ring 28, a spiral disc flow piece 29 and a conical dispersing basket 30, a flange joint plate 25 is welded at a tube orifice of the top end of the initial connecting tube 24 far away from the throat connecting tube 17, a rubber gasket 13 is pressed on the surface of the flange joint plate 25, the supporting ring 28 and the spiral disc flow piece 29 are sequentially welded in the initial connecting tube 24 below the flange joint plate 25 from top to bottom, the scattering ring 27 is supported on the surface of the supporting ring 28, the conical dispersing basket 30 is internally mounted in the scattering ring 27, and the conical top shrinking tube 26 is rotatably mounted in the initial connecting tube 24 above the scattering ring 27;

By adopting the above preferred technical scheme, the primary connecting pipe 24 of the split-rotation mixing pipe mechanism 5 can be connected with the conical shrinkage pipe 18 in a welding and communicating way, then a supporting ring 28 can support a scattering ring 27 in the primary connecting pipe 24, a conical scattering basket 30 is arranged in the scattering ring 27, then a conical top shrinkage pipe 26 can be installed in the primary connecting pipe 24 above the scattering ring 27 in a rotating way, the top end of the primary connecting pipe 24 is connected with a static mixer which is commonly used for mixing butadiene and polymerization inhibitor through a flange 25 provided with a rubber gasket 13 in a flange manner, so that the butadiene and polymerization inhibitor can enter the primary connecting pipe 24 for mixing after being added and mixed at the static mixer, after the butadiene liquid and polymerization inhibitor mixture is collected at the conical top shrinkage pipe 26 in the primary connecting pipe 24, the butadiene liquid and polymerization inhibitor mixture is dispersed in the conical scattering basket 30 and the scattering ring 27, and then a spiral disc flow piece 29 enables the butadiene liquid and polymerization inhibitor mixture fluid to form a disc flow, and the butadiene liquid and polymerization inhibitor mixture are further uniformly mixed.

The inner annular wall of the dispersion ring 27 is welded with a tray 31 through a spike connecting plate 32, a conical dispersion basket 30 is supported on the surface of the tray 31, the lower part of the basket body of the conical dispersion basket 30 is welded in the dispersion ring 27 through a cylinder, a rectangular basket groove is formed in the conical surface of the basket body of the conical dispersion basket 30, and the diameter of the ring body of the dispersion ring 27 is smaller than the diameter of the pipe cavity of the primary connecting pipe 24;

By adopting the above preferred technical scheme, the conical dispersing basket 30 can be supported by the sharp connection plate 32 in the dispersing ring 27 and the tray 31 can be welded, meanwhile, the conical dispersing basket 30 can be firmly connected by means of the cylindrical welding dispersing ring 27, and meanwhile, rectangular basket grooves are formed in the basket body of the conical dispersing basket 30, so that butadiene liquid and polymerization inhibitor mixture fluid can be dispersed for auxiliary mixing.

Threads for mutual screwing are arranged at the inner pipe wall of the primary connecting pipe 24 and the outer pipe wall of the conical top shrinking pipe 26 above the loose ring 27, and a cross rod is welded in a straight pipe cavity of the conical top shrinking pipe 26;

by adopting the above preferred technical scheme, the conical top shrinkage tube 26 can be installed in the primary connection tube 24 in a screwed mode, and the cross rod at the conical top shrinkage tube 26 can be held by a hand, so that the conical top shrinkage tube 26 can be conveniently screwed in the primary connection tube 24.

It should be noted that, the invention is a butadiene vaporization device, the cross-flow mixing tube mechanism 3, the venturi mixing tube mechanism 4 and the split-rotation mixing tube mechanism 5 are arranged between the water bath vaporizer 1 and the static mixer for butadiene vaporization, the primary connecting tube 24 of the split-rotation mixing tube mechanism 5 is matched with the rubber gasket 13 through the flange 25, the primary connecting tube 24 can be connected with the liquid outlet pipe of the static mixer in a flange manner by using bolts and nuts, the primary connecting tube 24 is connected with the conical tube 18 of the venturi mixing tube mechanism 4 in a welding manner, the rotating tube 15 of the venturi mixing tube mechanism 4 can be connected with the upper cone leading tube 7 in a rotating manner, meanwhile, the rubber gasket 13 can be pressed between the flange base 6 of the upper cone leading tube 7 and the tube body flange of the liquid inlet tube 2, then the flange base 6, the rubber gasket 13 and the tube body flange of the liquid inlet tube 2 can pass through bolts, and the bolts are matched with each other in a rotating manner, so that the connection of the upper cone leading tube 7 at the liquid inlet tube 2 is realized, the air bag resistant block 11 at the position of the upper cone leading tube 7 can be connected with the air bag resistant block 11 by means of the upper cone leading tube 12 to the air bag, and the air bag can be compressed by means of the compression device or the two air resistant blocks of the air bag body 11 can be provided by the aid of the compression device;

The butadiene liquid and the polymerization inhibitor can be added and primarily mixed from a static mixer connected above the spin mixing pipe mechanism 5, then the mixture fluid of the butadiene liquid and the polymerization inhibitor can flow downwards along the primary connecting pipe 24, after the mixture of the butadiene liquid and the polymerization inhibitor is firstly collected by the conical top shrinking pipe 26 in the primary connecting pipe 24, the mixture of the butadiene liquid and the polymerization inhibitor is dispersed in basket dispersed liquid at the conical dispersing basket 30 and the dispersing ring 27, and then the mixture fluid of the butadiene liquid and the polymerization inhibitor is formed into a disc flow by the spiral disc flow piece 29, so that the mixture fluid of the butadiene liquid and the polymerization inhibitor is further uniformly mixed;

Then the mixture fluid of the butadiene liquid and the polymerization inhibitor can enter the Venturi tube mixing mechanism 4 downwards, a Venturi structure is formed by a conical diffusion tube 16, a throat connecting tube 17 and a conical contraction tube 18 at the Venturi tube mechanism 4, according to Venturi effect, when the fluid passes through the throat connecting tube 17, the flow speed is increased, the pressure intensity is reduced, the polymerization inhibitor and the mixture fluid of the butadiene liquid can be fully mixed, a spiral flow guide piece 19 in the throat connecting tube 17 can enable the mixture fluid of the polymerization inhibitor and the butadiene liquid to form spiral flow, the mixing effect is further improved, a round head entering box 20 is arranged at the throat connecting tube 17 and extends into the tube, a vibration motor 23 in the round head entering box 20 can be electrically vibrated, the polymerization inhibitor and the mixture fluid of the butadiene liquid in the throat connecting tube 17 can generate vibration flow, the mixing of the butadiene liquid and the polymerization inhibitor is promoted, and the mixing is more uniform;

Then, the fluid of the mixture of the polymerization inhibitor and the butadiene liquid can downwards enter the cross flow mixing pipe mechanism 3 from the Venturi mixing pipe mechanism 4, after the fluid of the mixture of the butadiene liquid and the polymerization inhibitor enters the upper cone guide pipe 7, the mixture of the butadiene liquid and the polymerization inhibitor can flow downwards in a roundabout way along the high dislocation plate 10, the middle dislocation plate 9 and the low dislocation plate 8, the corrosion resistant air bag block 11 of the low dislocation plate 8 and the middle dislocation plate 9 can be controlled to bulge and expand, the height fall of the positions of the low dislocation plate 8 and the middle dislocation plate 9 is changed, the roundabout flowing effect of the mixture of the butadiene liquid and the polymerization inhibitor is improved, the mixing effect of the mixture of the butadiene liquid and the polymerization inhibitor is further improved, and the well mixed fluid of the mixture of the butadiene liquid and the polymerization inhibitor can enter the water bath type vaporizer 1 for vaporization treatment;

The principle of the water bath type vaporizer 1 for vaporizing butadiene is based on indirect heat exchange and phase change control, namely shell side hot water (60-90 ℃) transfers heat to tube side liquid butadiene through a fin tube or a spiral groove tube, so that the tube side liquid butadiene is heated to a boiling point (about 25 ℃ when the temperature is 0.5 MPa) under the operating pressure, and absorbs vaporization latent heat (about 389 kJ/kg) to be converted into a gas phase. The design ensures stable vaporization through hot water constant temperature control (+ -1 ℃) and superheat degree adjustment (the outlet temperature is higher than the boiling point by 5-10 ℃), the vaporized butadiene can be normally connected with external storage equipment or processing and utilization equipment for communication use, after the water bath type vaporizer 1 is stopped, the primary connecting pipe 24 can be detached from a bolt and a nut of a static mixer, the flange base plate 6 is detached from the liquid inlet pipe 2, then the spin tube 15 can be detached from the upper cone guiding pipe 7, if the corrosion resistant air bag blocks 11 at the middle dislocation plate 9 and the high dislocation plate 10 are damaged, the cross flow mixing pipe mechanism 3 can be directly replaced, if the corrosion resistant air bag blocks 11 are not damaged, the upper cone guiding pipe 7 can be cleaned, and the cross rod at the position of the conical top shrinking pipe 26 can reversely rotate, so that the conical top shrinking pipe 26 is upwards unscrewed from the primary connecting pipe 24 for cleaning and maintenance, and at the moment, the conical dispersing basket 30 can be upwards taken out for maintenance or replacement.

It should be noted that the present invention is a butadiene vaporization device, and the components in the present invention are all known to those skilled in the art, and the structures and principles thereof are all known to those skilled in the art through technical manuals or through routine experimental methods.

The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (5)

1. The butadiene vaporizing device comprises a water bath vaporizer, wherein a liquid inlet pipe for entering butadiene liquid is fixed at the top end of a tank body of the water bath vaporizer, and the butadiene vaporizing device is characterized by further comprising a cross flow mixing pipe mechanism, a venturi mixing pipe mechanism and a branch rotary mixing pipe mechanism, wherein the cross flow mixing pipe mechanism for mixing butadiene liquid and polymerization inhibitor in a roundabout way is arranged at the top end of the liquid inlet pipe in an intercommunicating manner, the venturi mixing pipe mechanism for mixing butadiene liquid and polymerization inhibitor in a vibrating flow manner is arranged above the cross flow mixing pipe mechanism in an intercommunicating manner, and the branch rotary mixing pipe mechanism for connecting an external static mixer to perform bulk disk flow mixing of butadiene liquid and polymerization inhibitor basket is welded and intercommunicated above the venturi mixing pipe mechanism;

The cross flow mixing pipe mechanism comprises an upper cone guiding pipe, a low dislocation plate, a middle dislocation plate, a high dislocation plate, a corrosion resistant air bag block and a pair penetrating pipe, wherein a flange base plate is welded outside the bottom pipe body of the upper cone guiding pipe and is connected with the pipe body flange of the liquid inlet pipe in a flange mode, the low dislocation plate, the middle dislocation plate and the high dislocation plate are welded in a staggered mode from bottom to top in the conical pipe cavity of the upper cone guiding pipe, the upper plate surfaces of the low dislocation plate and the middle dislocation plate are adhered and supported with the corrosion resistant air bag block for expanding and rising, and the pair penetrating pipe for penetrating out of the upper cone guiding pipe to perform ventilation is fixedly communicated with the two ends of the block of the corrosion resistant air bag block;

the top end of the upper cone guide tube is rotatably connected with a rotary tube provided with a Venturi tube mixing mechanism, the Venturi tube mixing mechanism comprises a rotary tube, a cone diffusion tube, a throat connecting tube, a cone shrinkage tube, a spiral guide piece, a round head entering box and a vibration motor, the rotary tube is welded in the lower tube opening of the cone diffusion tube, the upper end shrinkage tube opening of the cone diffusion tube is communicated with the lower end shrinkage tube opening of the cone shrinkage tube through the throat connecting tube in a welding manner, the inside of the tube body of the throat connecting tube is inserted and welded with the round head entering box for protruding shrinkage in the tube body, and the round head entering box is internally provided with the vibration motor;

the vertical wall of one side box cavity of the round head box is symmetrically provided with L-shaped hooking grooves, L-shaped hooking strips welded on the side surfaces of the side connecting plates are clamped in the L-shaped hooking grooves, round head supporting plates used for being pressed in the round head box are welded below the plate bodies of the side connecting plates, the surfaces of the round head supporting plates are locked with vibrating motors through bolts, plate holes used for inserting the bolts inwards are formed between the box bodies of the round head box-entering exposed throat connecting pipes and the side connecting plates, and the bolts penetrate through bolt bodies of the side connecting plates to be screwed with nuts;

The utility model discloses a throat connecting pipe, including throat connecting pipe, circular cone shrink tube, ring, support ring, spiral dish flow and circular cone dispersion basket, the circular cone shrink tube intercommunication welding of throat connecting pipe top is in the first takeover of branch spiral mixing pipe mechanism, and divide the spiral mixing pipe mechanism to include first takeover, circular cone top shrink tube, loose ring, support ring, spiral dish flow and circular cone dispersion basket, the top mouth of pipe department welding of keeping away from throat connecting pipe is just connected with the flange, and the flange surface pressure has put the rubber gasket, top-down has welded support ring and spiral dish flow in proper order in the first takeover of flange below, the support ring surface holds in the palm and has put the ring that looses, and the circular cone top shrink tube is installed in the first takeover internal rotation of loose ring top.

2. The butadiene vaporization device of claim 1, wherein a rubber gasket is crimped between the flange base plate below the upper cone guide tube and the liquid inlet tube, and a sheet hole vertically communicated with a hole on the surface of the flange base plate is formed on the surface of the rubber gasket.

3. The butadiene vaporization device of claim 2, wherein the conical tube body of the upper conical guide tube is symmetrically provided with penetrating holes, opposite penetrating tubes are penetrated and extended in the penetrating holes, and the opposite penetrating tubes are adhered and fixed with the wall of the penetrating holes.

4. The butadiene vaporization device of claim 3, wherein a tray is welded on the inner annular wall of the dispersion ring through a spike connecting plate, a conical dispersion basket is supported on the surface of the tray, the lower part of a basket body of the conical dispersion basket is welded in the dispersion ring through a cylinder, a rectangular basket groove is formed in the conical surface of the basket body of the conical dispersion basket, and the diameter of the ring body of the dispersion ring is smaller than the diameter of the pipe cavity of the primary connecting pipe.

5. The butadiene vaporization unit set forth in claim 4, wherein threads for mutual screwing are provided at the inner tube wall of the primary tube and the outer tube wall of the conical top shrinkage tube above the loose ring, and a cross rod is welded in the straight tube cavity of the conical top shrinkage tube.