SU1409313A1 - Recirculating separator - Google Patents

Abstract

The invention relates to separators and allows for improved separation efficiency. The separator contains a separating cartridge installed in the housing 1, consisting of two concentrically mounted cylinders 7 and 12 with inlet tangent nozzles 8 and 13; placed at the end of the outer cylinder 7 liquid trap 9 with outlet pipe 1.1; crescent-shaped flared 15 with spiral vanes 16 installed under the inner cylinder 12, which has through slots 14. In addition, the tangential nozzle 2 of the housing 1 is connected by a recirculation pipe 17 to the tangential nozzle 13. 2zz. (} t-ly, 6 il. C (O ate

Description

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The invention relates to separators used in the process of separation of liquids, particles and gases due to centrifugal forces and can also be used for separating mixtures of living systems characterized by different specific weights.

The purpose of the invention is improved separation efficiency.

Figure 1 shows the separator, a general view; in section 2 - section A-A on (1ig. 1, with a countercurrent washing the walls of the separating cartridge of gas-liquid jet streams; in FIG. 3 - the same with parallel streams; in (} ig.4 - node I in Fig. 2 with an embodiment of the grooves of the inner cylinder of the separating cartridge; FIG. 3 shows the assembly II in FIG. 3; FIG. 6 shows a section BB in FIG.

The recirculation separator includes a housing 1, made in the form of a cylindrical vessel containing a tangential nozzle 2, a vortex reflector 3, an axial outlet nozzle 4 with a protective visor 5, a nozzle 6 for draining the liquid and a separation cartridge, mounted in the housing 1 on the nozzle 4 and consisting of outer cylinder 7 with a tangential nozzle 8 and a figured (drop-shaped) liquid catcher 9 located in the lower part, having an annular opening 10 adjacent to the inner cylinder 7 and a discharge pipe II, and an inner cylinder 12 having a tangent An ideal nozzle 13. The cylinder 12 is made with through slots 14 and a crescent shaped flange 15, the envelope of the liquid catcher 9 and adjacent with a gap to the inner wall of the housing 1 with the spiral blades 16. In this cavity, this tangential nozzle 2 is connected a recirculation pipe 17 with a tangential nozzle 13, and fittings 18, a rotameter (flow meter) 19 and an instrument 20 controlling the phase composition of the liquid-gas mixture are installed at the inlet of the initial mixture.

The recycle separator operates as follows.

The separator is fed through the fittings 18, the flow meter 19 and the tangential nozzle 8 to the initial mixture of liquid and gas controlled by the composition of the phases of the device 20. Tangential nozzle 8

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forms a stream of the initial mixture, which due to the pressure drop in the separator gaps spins up in a spiral on the inner wall of the outer cylinder 7 of the separation cartridge. At the same time, the fluid in the jet of the initial mixture in suspension is much larger at the expense of much larger. The centrifugal gas in the gas presses against the inner wall of the outer cylinder 7 and, concentrating there, flows down this wall down through the annular opening 10 into the liquid catcher 9, from which the outlet tube 11 is led into the liquid cavity to drain from the separator through fitting 6.

The presence of the liquid catcher 9 and the outlet tube 11 prevents the flow of liquid and gas at the exit from the gap between the outer 7 and the inner 12 cylinders of the separating cartridge, which increases the efficiency of the separator at the first stage of the separating cartridge, as the unwound stream of the initial mixture passed in a spiral Around the liquid trap 9, mounted on the lower end of the outer cylinder 7.

Then, due to the action of centrifugal forces and the pressure difference with the crescent-shaped flare 15 and the spiral vanes 16, the flow is thrown onto the inner wall of the housing I, where, continuing circular spiral motion, which can be given the appropriate inclination of the crescent-shaped sampling 15 and the spiral vanes 16 with the desired step, rushes under the influence of the differential pressure in a spiral upward to the tangential nozzle 2 of the housing 1 of the separator. In this case, the second stage of separation of the mixture into liquid and gas phases is carried out: the liquid is pressed to the inner wall of the housing I due to centrifugal forces and, concentrating on it, flows down to drain it through the fitting 6 to drain the liquid. The separation efficiency at its second stage increases, since during the spiral movement of the initial mixture flow upwards, the liquid phase under the influence of gravity tends to flow downward, lagging behind the velocity of the gas jet.

Due to the recycling tube 17 connecting the tangential nozzle

2 separator bodies i with a tangential nozzle 13 of the internal cylinder 12 of the separating cartridge, having passed two stages of separation, the initial mixture of liquid and gas enters again into the separator into the internal cylinder 12 of the separating cartridge. The tangential step 13 of introducing a mixture of liquid and gas into the internal cavity of the internal cylinder 12 of the separating cartridge twists the stream of the incoming mixture along the wall of this cylinder,

Remaining fluid in the incoming mixture due to centrifugal forces and differences in the phase weights is pressed against the wall of the inner cylinder 12 of the separating cartridge and due to the through grooves 1A provided on the side surface of this cylinder, it is sucked out - through them due to the pressure drop (rarefaction) and the effect of ejection into the gap between cylinders 7 and 12 of the separation cartridge, thus accomplishing the third stage of the most efficient separation, since the liquid phase, including the liquid mist, leaves the gas flow (with rubbing), located in the inner cavity of the separator cartridge cylinder 12, and passing through the slots 14 into the gap between the cylinders 7 and 12 of the separating cartridge, where, captured by the initial flow of a mixture of liquid and gas, are recycled specified separation steps.

The gas jet released from the liquid phase, moving down a helical line and falling on the reflector 3 vortex, is reflected from it and leaves the separator through the pipe 4 in accordance with the usual flow pattern in the centrifugal separator.

Circulating flows of the mixture of liquid and gas successively pass the gaps between cylinders 7 and 12, the external cylinder 7 and the housing 1 and enter the internal cavity of the cylinder 12 of the separating cartridge, thus surrounding both the internal and external walls of the internal cylinder 12 of the separating cartridge containing through grooves 14. At the same time, depending on the location of the tangential nozzles 8 and 13 of introducing the mixture into the separating cartridge, these flows are directed towards each other (Fig. 2) or parallel ((} ig.C), which allows

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increase, if necessary, the effect of ejection of liquid suction from the final gas flow by using constructive versions of the separation cartridge.

The effect of ejection of fluid suction from the internal cavity of the inner cylinder 12 of the separating cartridge can be enhanced, for example, by counter flows over through grooves 14 or outwardly bent edges of these grooves, which in high-speed gas flows should create local vortices and discharges that promote ejection and separation of the liquid from the walls of the grooves 14 and pumping it into the gap between the cylinders 7 and 12 of the separating cartridge. The fluid flow, located on the inner wall of the cylinder 7 of the separating cartridge, and the gas flow in the gap between the outer-1m 7 and the inner 12 cylinders at the exit of this gap due to the presence of the liquid catcher 9 and the outlet tube 1 1 does not intersect, which greatly increases separation efficiency.

Due to the presence of a crescent side 15, installed with a certain inclination, and 1 X 1 x spiral blades 16 in it, moving the gas flow can vary both along the diary of the helix and in the direction of rotation in the gap between the housing 1 and the cylinder 7 of the separating cartridge, in this case, the free flow is concentrated downward on the inner wall of the housing 1 of the liquid downward to drain it through the nozzle 6 of the drain.

Thus, having carried out a three-stage separation of the initial mixture of gas and liquid on the proposed device, as well as recirculation of the liquid separation phase remaining at the third stage, significantly increase the efficiency of liquid and gas separation, which makes it possible to increase the separation effect by increasing the flow rates of the mixture. liquid and gas in the recycle separator, as this increases the suction and recirculation effect.

Claims (3)

1. A recycle separator containing a vertically mounted 51D and a cylindrical body separated by a reflector of a vortex into a liquid and gas cavity, a tangential nozzle placed in the upper part of the body, an axial outlet nozzle of the cleaned gas with a protective visor installed on it, 4 a liquid discharge nozzle located in the lower part of the body, a recirculation pipe, characterized in that, in order to increase the efficiency of separation, it is equipped with a separation cartridge, made in the form of two cylinders attached to the housing cap and mounted concentrically to each other and the housing, with tangential inlets with oplas in their upper part, the outer cylinder is provided with placed on the lower end of the catcher ае.2 fuff. 36 liquids with a discharge tube, the inner cylinder is made with through slots on its side surface and with a crescent-shaped flanging at the lower end, while the recirculation pipe is connected to the tangential nozzles of the housing and the inner cylinder of the ferruginal cartridge. 2. A separator according to claim 1, characterized in that the grooves of the inner cylinder of the separating cartridge are made with edges bent outward. 3. Separator according to claims 1 and 2, which is equipped with spiral blades installed in the cavity of the crescent flanging of the internal cylinder of the separation cartridge. at / 73 (Rie. W ) / foffftocfn FIG. 9 five sixteen ffuP.6