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CN116236803B - Flash tank for improving quality of chloroacetic acid product by continuous method - Google Patents

Flash tank for improving quality of chloroacetic acid product by continuous method

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Publication number
CN116236803B
CN116236803B CN202310289991.9A CN202310289991A CN116236803B CN 116236803 B CN116236803 B CN 116236803B CN 202310289991 A CN202310289991 A CN 202310289991A CN 116236803 B CN116236803 B CN 116236803B
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CN
China
Prior art keywords
liquid inlet
liquid
inlet pipe
pressure tank
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202310289991.9A
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Chinese (zh)
Other versions
CN116236803A (en
Inventor
王曙光
马守君
王建民
白璐
李政道
倪光
周迎迎
马松林
翟会营
徐海超
李宽
王菊花
王照民
李秀燕
李彬
澹台姝娴
曹磊
王小敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Pingmei Shenma Dongda Chemical Co ltd
Original Assignee
Henan Pingmei Shenma Dongda Chemical Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Henan Pingmei Shenma Dongda Chemical Co ltd filed Critical Henan Pingmei Shenma Dongda Chemical Co ltd
Priority to CN202310289991.9A priority Critical patent/CN116236803B/en
Publication of CN116236803A publication Critical patent/CN116236803A/en
Application granted granted Critical
Publication of CN116236803B publication Critical patent/CN116236803B/en
Active legal-status Critical Current
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06Flash distillation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/42Regulation; Control
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42Separation; Purification; Stabilisation; Use of additives
    • C07C51/43Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Paper (AREA)

Abstract

The invention provides a flash tank for improving the quality of a continuous chloroacetic acid product, which relates to the technical field of flash tanks, and comprises a low-pressure tank, a high-pressure tank and a high-pressure tank, wherein the low-pressure tank is of a hollow structure with openings at the upper end and the lower end; the centrifugal spraying assembly comprises a centrifugal rotary seat rotatably arranged at the liquid outlet end of the liquid inlet pipe, and a plurality of nozzle channels are formed in the circumferential wall of the centrifugal rotary seat along the circumferential direction of the circumferential wall of the centrifugal rotary seat. The high-pressure saturated mother liquor spraying device has the beneficial effects that the high-pressure saturated mother liquor enters the centrifugal rotary seat to drive the centrifugal rotary seat to rotate, the high-pressure saturated mother liquor is sprayed out in a state that the centrifugal rotary seat rotates, and liquid drops can impact on the rotating crushing frame to crush, so that the saturated mother liquor can be crushed and thinned, the saturated mother liquor is enabled to be in full contact with air, the flash evaporation efficiency is improved, meanwhile, the saturated mother liquor is prevented from directly impacting the inner wall of the low-pressure tank, and the erosion of the internal components of the low-pressure tank can be effectively prevented.

Description

Flash tank for improving quality of chloroacetic acid product by continuous method
Technical Field
The invention relates to the technical field of flash tanks, in particular to a flash tank for improving the quality of a chloroacetic acid product by a continuous method.
Background
Flash evaporation is the saturated water vapor and saturated water at the vessel pressure at which the saturated water at high pressure becomes a part due to a sudden drop in pressure after entering the relatively low pressure vessel.
Chloroacetic acid is an important organic chemical raw material, and is mainly used for producing carboxymethyl cellulose, glycine, ethyl chloroacetate and the like. The main method for industrially producing chloroacetic acid at present is an acetic acid catalytic chlorination method, and can be specifically classified into a continuous method and a batch method. Compared with batch process, the continuous process has the advantages of small scale, high productivity, advanced production technology, high product quality, less pollution and corrosion, etc.
In the preparation process of chloroacetic acid, the flash tank is required to be used for carrying out flash evaporation treatment on intermediate materials so as to separate out required products, but cavitation can occur in the flash tank due to vaporization of supersaturated liquid in the use process, and the liquid can be eroded when being flushed on a tank structural member for a long time, so that the service life of the tank structure is greatly influenced, and when the tank is damaged, the maintenance and replacement of the tank are required to be high.
Disclosure of Invention
The invention aims to provide a flash tank for improving the quality of a chloroacetic acid product by a continuous method, and aims to solve the problem that cavitation can occur due to vaporization of supersaturated liquid in the use process of the flash tank in the prior art, and the erosion can occur when the liquid is flushed on a tank structural member for a long time, so that the service life of the tank structure is greatly influenced.
In order to achieve the purpose, the invention adopts the following technical scheme that the flash tank for improving the quality of the chloroacetic acid product by the continuous method comprises the following steps:
the low-pressure tank is of a hollow structure with openings at the upper end and the lower end;
a liquid inlet pipe which is arranged on the low-pressure tank and is used for supplying saturated mother liquid into the low-pressure tank (10);
The centrifugal spraying assembly comprises a centrifugal rotating seat which is rotatably arranged at the liquid outlet end of the liquid inlet pipe, a plurality of nozzle channels are formed in the circumferential wall of the centrifugal rotating seat along the circumferential direction of the centrifugal rotating seat, the nozzle channels are communicated with the liquid inlet pipe, and the cross sections of the nozzle channels are arc-shaped structures, so that the nozzle channels can be driven to rotate when high-pressure saturated mother liquid enters the nozzle channels, and the nozzle channels spray the saturated mother liquid under a rotating state.
The crushing assembly comprises a crushing frame rotatably arranged in the low-pressure tank, wherein crushing strips are arranged on the crushing frame, saturated mother liquid drops sprayed and removed from the nozzle cavity can impact the crushing strips which rotate, and the saturated mother liquid drops are further crushed and refined.
According to a further technical scheme, the diameter of the liquid inlet of the nozzle cavity is smaller than that of the liquid spraying hole, and high-pressure saturated mother liquid is sprayed out in a space which is gradually enlarged on the nozzle cavity.
According to the technical scheme, the crushing frame is of an inverted cone structure with upper and lower openings, the upper surface of the crushing frame is fixedly provided with a fixed ring, and the crushing frame is rotatably arranged on the inner wall of the low-pressure tank through the fixed ring.
According to a further technical scheme, the centrifugal spraying assembly is located on the inner side of the crushing frame, and the rotation direction of the crushing frame is opposite to that of the centrifugal spraying assembly.
The invention further adopts the technical scheme that the device also comprises a foam removing mechanism for treating foam generated in the saturated steam which floats upwards after the saturated mother liquor is flashed.
According to a further technical scheme, the defoaming mechanism comprises an impeller rotatably arranged in a liquid inlet pipe, a rotating shaft connected with the impeller is rotatably arranged on the liquid inlet pipe, a rotating frame is fixedly arranged at the upper end of the rotating shaft, a plurality of cleaning plates are uniformly arranged on the inner side of the rotating frame along the circumferential direction of the rotating frame, and when saturated mother liquor flows in the liquid inlet pipe, the impeller is driven to rotate, so that the rotating frame and the cleaning plates are driven to rotate, and defoaming is carried out on foam generated in the saturated steam passing through the rotating frame.
According to a further technical scheme, the defoaming mechanism further comprises a defoaming device, the defoaming device is arranged at the position above the rotating frame, the defoaming device is composed of a plurality of splice plates, the splice plates form a continuous bending structure along the vertical direction, the bending structures are horizontally arranged at intervals to form a plurality of continuous bending steam channels, and when steam enters the steam channels to move upwards, the steam contacts with the side walls of the splice plates, so that defoaming operation is further carried out on saturated steam.
According to the further technical scheme, the fixed seat is arranged on the inner wall of the low-pressure tank, the driving shaft is rotatably arranged on the fixed seat, the first driving is fixedly arranged at the upper end of the driving shaft, the second driving wheel is fixedly arranged at the lower end of the driving shaft, the first driving wheel is rotatably connected with the inner wall of the rotating frame, and the second driving wheel is rotatably connected with the inner wall of the fixed ring, so that the rotating frame can drive the fixed ring and the crushing frame to rotate.
According to the further technical scheme, the liquid inlet pipe is of an L-shaped structure, one end of the liquid inlet pipe extends to the outer side of the low-pressure tank, the end of the liquid inlet pipe is a liquid inlet end, the liquid outlet end of the liquid inlet pipe is vertically arranged towards the bottom of the tank body, and the central line of the vertical part of the liquid inlet pipe is overlapped with the central line of the low-pressure tank.
According to a further technical scheme, the crushing frame is made of stainless steel.
The beneficial effects of the invention are as follows:
This improve continuous process chloroacetic acid product quality's flash tank, high pressure saturated mother liquor enters into in the centrifugal swivel mount, it is rotatory to drive centrifugal swivel mount, high pressure saturated mother liquor spouts out under centrifugal swivel mount pivoted state, the liquid droplet can strike the pivoted broken frame on broken, not only can break up saturated mother liquor and refine, make saturated mother liquor and air contact more abundant, improve the efficiency of flash evaporation, still avoided saturated mother liquor direct impact to the inner wall of low pressure tank simultaneously, can effectually prevent the erosion to low pressure tank internals.
Drawings
Fig. 1 is a perspective view of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of an embodiment of the present invention.
Fig. 3 is a partial cross-sectional view of an embodiment of the present invention.
Fig. 4 is an enlarged view of the invention at a in fig. 2.
Fig. 5 is an enlarged view of the present invention at B in fig. 2.
FIG. 6 is a schematic diagram of a centrifugal swivel-mount according to an embodiment of the invention.
FIG. 7 is a cross-sectional view of a centrifugal swivel mount according to an embodiment of the invention.
Fig. 8 is a schematic structural view of a crushing frame according to an embodiment of the present invention.
Fig. 9 is a schematic view of the structure of a turret according to an embodiment of the invention.
Fig. 10 is a schematic structural view of a demister according to an embodiment of the present invention.
Fig. 11 is a schematic view of a demister according to an embodiment of the present invention.
10 Parts of a low-pressure tank, 11 parts of a liquid inlet pipe, 10a parts of an exhaust port, 10b parts of a liquid outlet port, 20 parts of a centrifugal rotating seat, 20a parts of a liquid inlet cavity, 20b parts of a nozzle cavity, 30 parts of a crushing frame, 31 parts of a fixed ring, 32 parts of a crushing strip, 30a parts of a through hole, 40 parts of an impeller, 41 parts of a rotating shaft, 42 parts of a rotating frame, 43 parts of a cleaning plate, 50 parts of a fixed seat, 51 parts of a driving shaft, 52 parts of a first driving wheel, 53 parts of a second driving wheel, 60 parts of a splice plate, 60a parts of a steam channel.
Detailed Description
The flash tank can be cavitation because of supersaturated liquid vaporization in the use, liquid can take place the erosion when the long-time scouring of tank body structure, can all have very big influence to tank body structure life, when the tank body takes place to damage the back, need very high cost to maintenance and the change of tank body
As shown in figures 1-11, the flash tank for improving the quality of the chloroacetic acid product by a continuous method comprises a low-pressure tank 10 and a liquid inlet pipe 11, wherein the low-pressure tank 10 is provided with an upper opening structure, a lower opening structure, high-pressure saturated mother liquid enters the low-pressure tank 10 through the liquid inlet pipe 11, and is subjected to flash evaporation treatment under a low-pressure environment, a centrifugal spraying assembly, a crushing assembly and a defoaming mechanism are further arranged in the low-pressure tank 10, the saturated mother liquid is uniformly sprayed to the crushing assembly after passing through the centrifugal spraying assembly, the crushing assembly further breaks up and refines mother liquid particles, saturated vapor and saturated liquid are finally formed, and after foam generated by rising of the saturated vapor is cleaned by the defoaming mechanism, the saturated vapor is discharged from the upper side of the low-pressure tank 10, and the saturated liquid is discharged from the lower side of the low-pressure tank 10.
Referring to fig. 1 and 2, an exhaust port 10a is provided above the low pressure tank 10, a liquid discharge port 10b is provided at the bottom of the low pressure tank 10, so that saturated vapor formed by flash evaporation can be discharged from the exhaust port 10a above, saturated liquid is discharged from the liquid discharge port 10b below, the liquid inlet pipe 11 has an L-shaped structure, one end of the liquid inlet pipe 11 extends to the outside of the low pressure tank 10, the end is a liquid inlet end, the liquid outlet end of the liquid inlet pipe 11 is vertically arranged towards the bottom of the tank body, and the center line of the vertical part of the liquid inlet pipe 11 coincides with the center line of the low pressure tank 10.
Continuing to return to fig. 6 and 7, the centrifugal spraying assembly is a schematic diagram of the centrifugal spraying assembly, and the centrifugal spraying assembly can fully release the pressure of the high-pressure saturated mother liquor and uniformly spray the saturated mother liquor under the rotating state;
the centrifugal spraying assembly comprises a centrifugal rotary seat 20 rotatably arranged at the liquid outlet end of a liquid inlet pipe 11, a vertical liquid inlet cavity 20a is formed in the central position of the centrifugal rotary seat 20, the upper end of the liquid inlet cavity 20a is communicated with the liquid inlet pipe 11, a plurality of nozzle cavity channels 20b are uniformly formed in the circumferential wall of the centrifugal rotary seat 20 along the circumferential direction of the centrifugal rotary seat, the nozzle cavity channels 20b are communicated with the liquid inlet cavity 20a, saturated mother liquid enters the liquid inlet cavity 20a through the liquid inlet pipe 11 and then is sprayed out after passing through different nozzle cavity channels 20b respectively;
Referring to FIG. 7, the cross section of the nozzle channel 20b is of an arc structure, one end of the nozzle channel 20b extends to the liquid inlet cavity 20a, and the other end extends to the circumferential wall of the centrifugal swivel mount 20, when the liquid inlet cavity 20a enters the nozzle channel 20b, the impact force generated by liquid acts on the arc cavity wall, so that acting force driving the centrifugal swivel mount 20 to rotate can be generated, the centrifugal swivel mount 20 is further driven to rotate, kinetic energy of high-pressure saturated mother liquid is reduced, the saturated mother liquid is uniformly sprayed onto the crushing assembly in the rotating state of the centrifugal swivel mount 20, the saturated mother liquid with a certain speed impacts the crushing assembly for further crushing and refining, and meanwhile, the liquid inlet diameter of the nozzle channel 20b is smaller than the diameter of the liquid spraying opening and is approximately in a horn shape, so that the high-pressure saturated mother liquid can fully release pressure in a gradually expanding space, and the flash evaporation efficiency is improved.
Referring to fig. 2 and 8, the crushing assembly includes a crushing frame 30 installed in the low pressure tank 10, the crushing frame is made of stainless steel, the crushing frame 30 is of an inverted cone structure with upper and lower openings, the crushing frame 30 is rotatably installed on the inner wall of the low pressure tank 10 through a fixing ring 31, and the centrifugal rotary seat 20 is located on the inner side of the crushing frame 30, so that saturated mother liquor sprayed out by the centrifugal rotary seat 20 can impact the crushing frame 30 for crushing, and meanwhile, the saturated mother liquor is prevented from directly impacting the inner wall of the low pressure tank 10, so that erosion to the inner components of the low pressure tank 10 can be effectively prevented.
The crushing frame 30 can be driven to rotate by a driving assembly provided below, the rotation direction of the crushing frame 30 is opposite to the rotation direction of the centrifugal swivel mount 20, impact force sprayed on the crushing frame 30 can be increased, a plurality of crushing strips 32 which are arranged at intervals are uniformly arranged on the inner side surface of the crushing frame 30, through holes 30a are distributed on the crushing frame 30, in the rotating process of the crushing frame 30, the crushing strips 32 can further crush and refine saturated mother liquid sprayed out from the nozzle cavity 20b, so that the liquid is contacted with air more fully, the flash evaporation efficiency can be effectively improved, finally formed saturated liquid falls down after passing through the through holes 30a or directly slides down along the inner side surface of the crushing frame 30, in the embodiment, the crushing frame 30 rotates clockwise, the centrifugal swivel mount 20 rotates anticlockwise, in another embodiment, the crushing frame 30 rotates anticlockwise, and the centrifugal swivel mount 20 rotates clockwise.
Referring to fig. 2, 4, 9, 10 and 11, the defoaming mechanism comprises an active defoaming component and a defoaming device, wherein the active defoaming component can be driven to rotate by the flowing force of saturated mother liquor in the liquid inlet pipe 11, the saturated mother liquor is flashed and then floats upwards, the attached foam is subjected to primary defoaming, and then the defoaming device is used for secondary defoaming of the gas, so that the purity of saturated steam discharged from the exhaust port 10a above the low-pressure tank 10 is ensured.
With continued reference to fig. 2 and 9, the active defoaming component includes an impeller 40 rotatably mounted in the liquid inlet pipe 11, a rotating shaft 41 connected with the impeller 40 is rotatably mounted on the liquid inlet pipe 11, the rotating shaft 41 is in sealed and rotatable connection with the liquid inlet pipe 11, liquid is prevented from leaking out between the liquid inlet pipe 11 and the rotating shaft 41, a rotating frame 42 is fixedly mounted at the upper end of the rotating shaft 41, a plurality of cleaning plates 43 are uniformly arranged on the inner side of the rotating frame 42 along the circumferential direction of the rotating frame 42, when saturated mother liquid flows in the liquid inlet pipe 11, the impeller 40 is driven to rotate, so that the rotating frame 42 and the cleaning plates 43 are driven to rotate, when saturated steam passes through the inner side of the rotating frame 42, the foam in the saturated steam is crushed when contacting the rotating cleaning plates 43, the primary treatment of the foam in the saturated steam is realized, and the larger foam is cleaned.
As shown in fig. 6, the driving assembly includes a fixed seat 50 installed on the inner wall of the low pressure tank 10, a driving shaft 51 vertically installed is rotatably installed on the fixed seat 50, a first driving wheel 52 is fixedly installed at the upper end of the driving shaft 51, a second driving wheel 53 is fixedly installed at the lower end of the driving shaft 51, the first driving wheel 52 is rotatably connected with the inner wall of the rotating frame 42, and the second driving wheel 53 is rotatably connected with the inner wall of the fixed ring 31, so that when the saturated mother liquid drives the rotating frame 42 to rotate through the impeller 40, the first driving wheel 52 drives the second driving wheel 53 to rotate, thereby driving the fixed ring 31 and the crushing frame 30 to rotate, and further crushing and refining the saturated mother liquid.
Further, referring to fig. 10 and 11, as a schematic structural diagram of the demister, the demister is located above the active demister assembly, wherein the demister is formed by a plurality of splice plates 60, the splice plates 60 form a continuous bending structure along a vertical direction, the bending structures are horizontally arranged at intervals to form a plurality of continuous bending steam channels 60a (as shown in fig. 11), when steam enters the steam channels 60a to move upwards, the steam drives the foam to pass through bending parts of the steam channels 60a and then contact with side walls of the splice plates 60, interference is generated on the steam, the flow direction of the steam is changed, the flow speed of the steam can be effectively reduced, foam is broken, the demisting effect is improved, and when the foam is accumulated on the side walls of the splice plates 60 for a certain amount, the demisting operation of the steam is completed, and the purity of the steam is effectively improved;
The structure of the foam remover belongs to the prior art, and the specific structure and principle are not described in detail, in one embodiment of the invention, the splice plate 60 is a plate-shaped structure, and in other embodiments, the splice plate 60 may be other shapes such as a net-shaped structure.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. A flash tank for improving the quality of a continuous chloroacetic acid product, comprising:
The low-pressure tank (10) is of a hollow structure with openings at the upper end and the lower end, a fixed seat (50) is arranged on the inner wall of the low-pressure tank (10), a driving shaft (51) is rotatably arranged on the fixed seat (50), a first driving wheel (52) is fixedly arranged at the upper end of the driving shaft (51), and a second driving wheel (53) is fixedly arranged at the lower end of the driving shaft (51);
a liquid inlet pipe (11) which is arranged on the low-pressure tank (10) and is used for supplying saturated mother liquid into the low-pressure tank (10);
The centrifugal spraying assembly comprises a centrifugal rotary seat (20) rotatably arranged at the liquid outlet end of a liquid inlet pipe (11), a vertical liquid inlet cavity (20 a) is formed in the central position of the centrifugal rotary seat (20), the upper end of the liquid inlet cavity (20 a) is communicated with the liquid inlet pipe (11), a plurality of nozzle cavities (20 b) are formed in the circumferential wall of the centrifugal rotary seat (20) along the circumferential direction of the centrifugal rotary seat, the nozzle cavities (20 b) are communicated with the liquid inlet cavity (20 a), the cross section of the nozzle cavities (20 b) is of an arc-shaped structure, so that when high-pressure saturated mother liquid enters the nozzle cavities (20 b), the nozzle cavities (20 b) can be driven to rotate, the saturated mother liquid is sprayed out in a rotating state, the diameter of the liquid inlet of the nozzle cavities (20 b) is smaller than the diameter of a liquid spraying opening, and the high-pressure saturated mother liquid is sprayed out of a space which is gradually enlarged on the nozzle cavities (20 b), so that the pressure can be fully released;
The crushing assembly comprises a crushing frame (30), a fixed ring (31) is fixedly arranged on the upper surface of the crushing frame (30), the crushing frame (30) is rotatably arranged on the inner wall of the low-pressure tank (10) through the fixed ring (31), crushing strips (32) are arranged on the crushing frame (30), and saturated mother liquid drops sprayed from the nozzle cavity (20 b) can impact on the rotating crushing strips (32) to crush the saturated mother liquid drops again;
The foam removing mechanism for treating foam generated in saturated steam floating upwards after saturated mother liquor is flashed comprises an impeller (40) rotatably arranged in a liquid inlet pipe (11), a rotating shaft (41) connected with the impeller (40) is rotatably arranged on the liquid inlet pipe (11), a rotating frame (42) is fixedly arranged at the upper end of the rotating shaft (41), a plurality of cleaning plates (43) are uniformly arranged on the inner side of the rotating frame (42) along the circumferential direction of the rotating frame, and when saturated mother liquor flows in the liquid inlet pipe (11), the impeller (40) is driven to rotate so as to drive the rotating frame (42) and the cleaning plates (43) to rotate, and foam generated in the saturated steam passing through is removed;
The first driving wheel (52) is rotationally connected with the inner wall of the rotary frame (42), and the second driving wheel (53) is rotationally connected with the inner wall of the fixed ring (31), so that the rotary frame (42) can drive the fixed ring (31) and the crushing frame (30) to rotate.
2. A flash tank for improving the quality of a continuous chloroacetic acid product according to claim 1, wherein the crushing frame (30) has an inverted cone structure with upper and lower openings.
3. A flash tank for improving the quality of a continuous process chloroacetic acid product according to claim 1, wherein the centrifugal spray assembly is positioned inside a crushing frame (30), and the crushing frame (30) is rotated in the opposite direction to the centrifugal spray assembly.
4. A flash tank for improving the quality of a continuous chloroacetic acid product according to claim 3, wherein the demister mechanism further comprises a demister, the demister is arranged above the rotating frame (42), the demister is composed of a plurality of splice plates (60), the splice plates (60) form a continuous bending structure along the vertical direction, the bending structures are horizontally arranged at intervals, a plurality of continuous bending steam channels (60 a) are formed, and when steam enters the steam channels (60 a) and moves upwards, the steam contacts with the side walls of the splice plates (60) to remove foam.
5. A flash tank for improving the quality of a chloroacetic acid product by a continuous process according to claim 3, wherein the liquid inlet pipe (11) is of an L-shaped structure, one end of the liquid inlet pipe (11) extends to the outer side of the low-pressure tank (10), the end is a liquid inlet end, the liquid outlet end of the liquid inlet pipe (11) is vertically arranged towards the bottom of the tank body, and the central line of the vertical part of the liquid inlet pipe (11) coincides with the central line of the low-pressure tank (10).
6. A flash tank for improving the quality of a continuous chloroacetic acid product according to claim 2, wherein the crushing frame (30) is made of stainless steel.
CN202310289991.9A 2023-03-22 2023-03-22 Flash tank for improving quality of chloroacetic acid product by continuous method Active CN116236803B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310289991.9A CN116236803B (en) 2023-03-22 2023-03-22 Flash tank for improving quality of chloroacetic acid product by continuous method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310289991.9A CN116236803B (en) 2023-03-22 2023-03-22 Flash tank for improving quality of chloroacetic acid product by continuous method

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CN116236803A CN116236803A (en) 2023-06-09
CN116236803B true CN116236803B (en) 2025-10-17

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CN209333232U (en) * 2018-12-21 2019-09-03 博爱新开源医疗科技集团股份有限公司 A kind of flash tank
CN213760542U (en) * 2020-11-30 2021-07-23 武汉天浪环保技术有限公司 A new type of high-efficiency flash tank
CN214861260U (en) * 2021-07-23 2021-11-26 湖北瑞邦石化装备科技有限公司 Self-cleaning type vacuum flash tank

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CN217661578U (en) * 2022-04-22 2022-10-28 山西通洲集团兴益化工股份有限公司 Carbon dioxide flash tower for methanol production
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Publication number Priority date Publication date Assignee Title
CN209333232U (en) * 2018-12-21 2019-09-03 博爱新开源医疗科技集团股份有限公司 A kind of flash tank
CN110156103A (en) * 2019-06-25 2019-08-23 河南达新源新材料有限公司 A kind of Novel stripping tower
CN213760542U (en) * 2020-11-30 2021-07-23 武汉天浪环保技术有限公司 A new type of high-efficiency flash tank
CN214861260U (en) * 2021-07-23 2021-11-26 湖北瑞邦石化装备科技有限公司 Self-cleaning type vacuum flash tank

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