CN221230238U - Gas-liquid mixture processing apparatus - Google Patents

Abstract

The utility model provides a gas-liquid mixture treatment device, relates to the field of electrolytic reaction, and solves the problem that a gas product is difficult to effectively separate from a strong alkaline liquid drop carried by the gas product; the device comprises a tank body, a primary separation member, a spray header, a heat exchanger and a drop capturing assembly which are sequentially arranged in the tank body from bottom to top at intervals, wherein a gas phase outlet is arranged at the top of the tank body, a liquid outlet is arranged at the bottom of the tank body, and the primary separation member is used for primary separation of a gas-liquid mixture; the spray header is downwards arranged and is used for spraying desalted water so as to remove part of alkali mist carried in the gas; the heat exchanger is used for cooling the gas-liquid mixture after water washing and further separating alkali mist carried in the gas; the drop capturing component comprises drop capturing blades which are communicated with a liquid guide groove; the device adopts preliminary component separation and drop catching blade separation, integrates water washing and cooling functions, and improves the gas-liquid separation effect through primary separation, water washing, cooling and drop catching.

Description

Gas-liquid mixture processing apparatus

Technical Field

The utility model relates to the technical field of electrolytic reaction, in particular to a preparation device for a gas-liquid mixture.

Background

In industrial processes, the gas product is obtained through continuous separation, heat exchange, dehydration and other operations. The common process design realizes different functions by arranging a separator and a cooler and a water diversion device in steps. Taking an electrolytic water hydrogen production system as an example, the method is characterized by having higher requirement on the degree of gas-liquid separation. The electrolysis product just exiting the electrolysis tank is a gas-liquid two-phase flow with a certain pressure (0.8-3.0 MPa) at a high temperature (70-95 ℃), and a large amount of electrolyte solution is entrained. The common electrolyte solution is a strong alkaline solution, such as 20-30% KOH solution, and has strong corrosiveness, and in order to avoid the strong alkali solution flowing into the downstream to damage equipment, strong alkali and gas components must be effectively separated.

The gas-liquid mixture needs to be subjected to a series of operations such as separation, water washing (alkali liquor is prevented from entering a subsequent system), cooling (an electrolysis product is high in temperature and has the effects of cooling and further separating alkali mist), and the like, so that better components of a gas phase component and a liquid phase component are realized, and the gas phase component and the liquid phase component are obtained.

The present inventors found that there are at least the following technical problems in the prior art: in the prior art device, the gas-liquid mixture is difficult to be well treated, for example, gas products in the electrolytic water hydrogen production system are difficult to be effectively separated from the carried strong alkaline liquid drops.

Disclosure of utility model

The utility model aims to provide a gas-liquid mixture treatment device, which solves the technical problem that a gas product is difficult to effectively separate from strong alkaline liquid drops carried by the gas product in the prior art; the preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a gas-liquid mixture processing device, which comprises a tank body, a primary separation member, a spray header, a heat exchanger and a drop capturing assembly, wherein the primary separation member, the spray header, the heat exchanger and the drop capturing assembly are sequentially arranged in the tank body at intervals from bottom to top, and the gas-liquid mixture processing device comprises:

The top of the tank body is provided with a gas phase outlet, the bottom of the tank body is provided with a liquid outlet, and the primary separation component is used for primary separation of a gas-liquid mixture so as to separate most of free liquid in the gas-liquid; the spray header is downwards arranged and is used for spraying desalted water so as to remove part of alkali mist carried in the gas; the heat exchanger is used for cooling the gas-liquid mixture after water washing and further separating alkali mist in the gas-liquid;

The drop capturing assembly comprises drop capturing blades, the drop capturing blades are communicated with a liquid guide groove, and the liquid guide groove is used for downwards guiding liquid condensed on the drop capturing blades.

Preferably, the liquid guiding groove is horizontally arranged or obliquely arranged compared with the horizontal plane, the liquid guiding groove is communicated with the liquid guiding pipe, and the liquid guiding pipe is vertically arranged or obliquely arranged compared with the horizontal plane.

Preferably, a communication port is formed in the side wall of the tank body and is communicated with the desalted water containing device, and the communication port is communicated with the spray header through a pipeline.

Preferably, the gas-liquid mixture processing device further comprises a packing layer, wherein the packing layer is located above the primary separation member and below the spray header, and the packing layer is used for increasing the contact surface of desalted water and alkali mist so as to adhere and separate the alkali mist.

Preferably, the heat exchanger comprises a shell heat exchange tube, a refrigerant inlet and a refrigerant outlet are arranged on the shell, the heat exchange tube is positioned in the shell, the heat exchange tube is vertically arranged, and the air-liquid mixture of the heat exchange tube passes through.

Preferably, the refrigerant inlet and the refrigerant outlet are positioned at two opposite sides of the shell, the refrigerant inlet is positioned at the lower part of the tank body, and the refrigerant outlet is positioned at the upper part of the tank body.

Preferably, a baffle plate is fixed in the shell, and the baffle plate is horizontally arranged or obliquely arranged relative to the horizontal plane.

Preferably, the drop catching blades are corrugated, Z-shaped or bag-type structures.

Preferably, more than two drip catching blades are arranged.

Preferably, the primary separation member comprises a baffle or a half open tube or a finned tube.

Preferably, the primary separation member comprises a half open pipe, a two-phase inflow port is arranged on the tank body, one end of the half open pipe is communicated with the two-phase flow inlet, the other end of the half open pipe is arranged at intervals with the inner wall of the tank body, an opening part is arranged on the half open pipe, and the opening part is arranged downwards.

Compared with the prior art, the gas-liquid mixture treatment device provided by the utility model has the following beneficial effects: the mixed gas-liquid fluid is separated through a primary separation component, most of free liquid in the gas-liquid is separated, the fluid after preliminary separation is contacted with desalted water sprayed out of a spray header and is subjected to two-phase transfer, alkali liquor is further separated, the gas-liquid mixture rises into a heat exchanger to exchange heat with a refrigerant and reduce the temperature, free alkali water entrained in the gas is condensed when the temperature is low to a dew point in the gas heat exchange process, small liquid drops carried by the gas are blocked and condensed by a capturing blade when the gas passes through the capturing blade, when the droplets are condensed into large liquid drops, the liquid drops fall along a diversion trench by virtue of dead weight, a gas product after the free water is removed leaves the device through a gas phase outlet to enter the downstream, and the alkali liquor and the desalted water flow out along a liquid outlet at the bottom of a tank body. The gas-liquid mixture treatment device can improve the gas-liquid separation effect through primary separation, water washing, cooling and liquid drop capturing.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view showing the overall structure of a gas-liquid mixture processing apparatus;

FIG. 2 is a top view of the heat exchanger;

FIG. 3 is a schematic view of a drop capturing blade;

fig. 4 is a schematic cross-sectional structure of a filler layer.

1, A gas phase outlet; 2. a tank body; 3. drop catching blades; 4. a refrigerant outlet; 5. a communication port; 6. a two-phase inflow port; 7. a liquid outlet; 8. a primary separation member; 81. an opening portion; 9. a filler layer; 91. a support frame; 92. a filler; 10. a spray header; 11. a refrigerant inlet; 12. a heat exchanger; 121. a heat exchange tube; 13. a baffle plate; 14. a liquid guiding groove; 15. and a flow guiding pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

In the description of the present utility model, it should be understood that the terms "center", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The embodiment of the utility model provides a gas-liquid mixture treatment device which can improve the gas-liquid separation effect through primary separation, water washing, cooling and liquid drop capturing.

The technical solution provided by the present utility model is described in more detail below with reference to fig. 1-4.

As shown in fig. 1, this embodiment provides a gas-liquid mixture processing apparatus, including a tank body 2, a primary separation member 8, a shower head 10, a heat exchanger 12 and a drop capturing assembly which are sequentially arranged in the tank body 2 from bottom to top at intervals, wherein: the top of the tank body 2 is provided with a gas phase outlet 1, the bottom of the tank body 2 is provided with a liquid outlet 7, and a primary separation member 8 is used for contacting with the gas-liquid mixture so as to enable condensed liquid drops to drop; the spray header 10 is arranged downwards and is used for spraying desalted water so as to remove at least part of alkali liquor entrained in the gas; the heat exchanger 12 is used for cooling the gas-liquid mixture after water washing; the drop capturing component comprises a drop capturing blade 3, the drop capturing blade 3 is communicated with a liquid guide groove 14, and the liquid guide groove 14 is used for downwards guiding liquid condensed on the drop capturing blade 3.

The gas-liquid mixture treatment device in the embodiment is particularly suitable for an alkaline water electrolysis hydrogen production system and an alkaline carbon dioxide electrolysis system. The gas of the system carries part of alkali liquor, so that the separation of gas products and alkali liquor can be better realized.

Referring to fig. 1, the tank 2 has a vertical cylinder structure and can be a normal pressure container or a pressure container. The desalted water sprayed by the spray header 10 is used for washing gas, and alkali liquor entrained in the gas is removed.

When the temperature is low to the dew point in the gas heat exchange process, free water entrained in the gas is condensed out. The drop capturing component in this embodiment can further separate the cooled gas-liquid mixture, and the droplets carried by the gas can be blocked by the capturing blades, at least part of the gas is condensed, and the liquid guiding groove 14 plays a role in guiding the liquid. In addition, the drop capturing component can also be any structure with a gas-liquid separation function, such as a silk screen, a blade, a cyclone tube and the like. The drip catching blades 3 can be one or more groups, and the number of each group is one or more than two.

As an alternative embodiment, referring to fig. 1, the liquid guiding groove 14 is horizontally arranged or inclined relative to the horizontal plane, the liquid guiding groove 14 is communicated with the liquid guiding pipe 15, and the liquid guiding pipe 15 is vertically arranged or inclined relative to the horizontal plane.

In the gas-liquid mixture processing device of the embodiment, the gas-liquid mixed fluid is condensed and dripped through the primary separation member 8, the fluid after primary separation is contacted with desalted water sprayed by the spray header 10 and is subjected to two-phase transfer, alkali liquor is further separated, the gas-liquid mixture rises into the heat exchanger 12 to exchange heat with a refrigerant and is cooled, when the temperature in the gas heat exchange process is low to the dew point, free water carried in the gas is condensed out, when the gas passes through the drip catching blade 3, small liquid drops carried by the gas are blocked by the drip catching blade, when the liquid drops are condensed into large liquid drops, the liquid drops fall by self weight, are condensed in the liquid guide groove 14 and flow to the lower part along the flow guide pipe 15, a gas product after the free water is removed leaves the device through the gas phase outlet 1 to enter the downstream, and the alkali liquor and the desalted water flow out along the liquid outlet 7 at the bottom of the tank 2. The gas-liquid mixture treatment device can improve the gas-liquid separation effect through primary separation, water washing, cooling and liquid drop capturing.

As an alternative embodiment, the primary separating member 8 in this example comprises a baffle or a half-open tube or fin separator.

Specifically, referring to fig. 1, the primary separation member 8 includes a half open pipe, a two-phase flow inlet 6 is provided on the tank 2, one end of the half open pipe is connected to the two-phase flow inlet 6, an interval is provided between the other end of the half open pipe and the inner wall of the tank 2, an opening 81 is provided on the half open pipe, and the opening 81 is provided downward.

The gas-liquid mixture enters the semi-open pipe (primary separation member 8) through the two-phase flow inlet 6, part of the gas is condensed by contacting with the pipe wall of the semi-open pipe (primary separation member 8), and liquid drops carried in the gas drop from the opening 81 and then flow out from the liquid outlet 7 at the bottom of the tank 2. The gas carrying part after the primary separation continues to rise with the mist droplets which are not separated.

The gas-liquid mixture changes the flowing direction through the primary separation member 8, so that the gas and the alkali liquor can be pre-separated.

Referring to fig. 1, as an alternative embodiment, a communication port 5 is provided on a sidewall of the tank 2, the communication port 5 is communicated with the desalted water containing device, and the communication port is communicated with the shower head 10 through a pipeline.

The desalted water containing device can be of a tank structure, a barrel structure and the like and is used for containing desalted water, the desalted water enters the spray header 10 under the action of the pump body, and the spray header 10 sprays desalted water downwards, so that gas is washed, and alkali liquor entrained in the gas is removed.

The electrolysis process consumes part of the water in the electrolyte, and a spray header 10 is usually arranged to supplement desalted water to the system in an intermittent or continuous mode so as to ensure the concentration of the electrolyte. And the gas and the filler layer 9 are sprayed and washed by the spray header 10. The cooled gas is subjected to condensate removal through the drip capturing blade 3, and then enters the downstream through the gas phase outlet 1 at the top of the tank.

As an alternative embodiment, referring to fig. 1, the gas-liquid mixture processing apparatus further includes a packing layer 9, the packing layer 9 being located above the primary separation member 8 and below the shower head 10, the packing layer 9 being used to adhere mist droplets.

Referring to fig. 4, the packing layer 9 includes a supporting frame 91 and packing 92, and a sidewall of the supporting frame 91 is a mesh structure, and gas-liquid two phases can be brought into contact with the packing 92 inside through the supporting frame 91. The particles of the packing are larger than the mesh diameter of the net structure, and the packing 92 can be random packing or structured packing, and can also be added with a structure such as a tower plate which is helpful for increasing the gas-liquid contact area and the contact time.

The height of the filler layer 9 is determined by the choice of filler, and can be in the form of random or structured, such as an integral wire mesh and random polypropylene pellets, which are required to be characterized by a relatively high specific surface area and void fraction, and corrosion resistance when the gas contains corrosive components.

The gas phase component after primary separation passes through the upper packing layer 9 under the action of the gas lift force. The gas is distributed more uniformly when passing through the packing layer 9, and longer residence time and larger gas-liquid contact area are obtained, so that the alkali liquor is further separated from the gas in the packing layer 9.

The desalted water sprayed by the spray header 10 can absorb the alkali liquor which is not separated when washing the packing layer 9, and in addition, the water washing process also has a certain effect of reducing the temperature of the gas, so that the load of the upper heat exchanger 12 is reduced.

As an alternative embodiment, referring to fig. 1 and 2, the heat exchanger 12 includes a housing provided with a refrigerant inlet 11 and a refrigerant outlet 4, and a heat exchange tube 121, the heat exchange tube 121 being located in the housing, the heat exchange tube 121 being disposed vertically or obliquely with respect to a horizontal plane, the heat exchange tube 121 being supplied with a gas-liquid mixture therethrough. The gas after water washing is introduced into the heat exchange tube 121 as a heat medium, and is subjected to heat exchange and temperature reduction by a cold medium (such as circulating water).

The heat exchanger 12 in this embodiment is a shell-and-tube heat exchanger, and the refrigerant may be cooling water or the like. The refrigerant enters the shell through the refrigerant inlet 11, the gas-liquid two phases flow from bottom to top in the heat exchange tube 121 and exchange heat with the refrigerant, the cooled gas-liquid mixture continues to flow upwards after heat exchange, part of liquid drops fall down, and the refrigerant flows out from the refrigerant outlet 4.

The high temperature and pressure and corrosive gas goes through the heat exchange tube 121, which is beneficial to prevent corrosion and relieve the shell pressure. Referring to fig. 2, the flow resistance of the gas phase fluid in the heat exchange tube 121 is small, and the method can be suitable for processing a certain atmosphere flux gas phase.

As an alternative embodiment, referring to fig. 1, the refrigerant inlet 11 and the refrigerant outlet 4 are located at opposite sides of the housing, the refrigerant inlet 11 is located at the lower portion of the tank 2, and the refrigerant outlet 4 is located at the upper portion of the tank 2.

The structure can improve the contact time of the refrigerant and the gas-liquid mixture, and prolong the contact path of the refrigerant and the gas-liquid mixture, thereby improving the heat exchange effect.

As an alternative embodiment, see fig. 1, a baffle 13 is fixed in the housing, the baffle 13 being arranged horizontally or inclined with respect to the horizontal. The baffle 13 can play a role in disturbance, so that the heat exchange effect of the refrigerant and the gas-liquid mixture is improved.

As an alternative embodiment, see fig. 3, the drip catching blade 3 is corrugated. The liquid guide groove 14 with the structure is characterized in that when the cooled gas-liquid two phases continuously rise to contact with the drop capturing blade 3, small drops carried by the gas are blocked by the drop capturing blade, and when the droplets are aggregated into large drops, the drops fall on the liquid guide groove 14 by self weight to be aggregated, and flow into the lower part along the flow guide pipe 15.

In the structure of the drop catching blade 3 with the structure, in the gas rising process, the gas is in contact with the groove wall, so that the gas is convenient to be condensed further, and the gas-liquid separation effect is improved. Or the drop catching blades are Z-shaped.

As an alternative embodiment, referring to fig. 3, more than two drip catching blades 3 are provided, and the gas-liquid mixture is split into different liquid guide tanks 14, so that the gas-liquid separation effect is improved.

The gas-liquid mixture processing device adopts secondary separation, namely primary separation and drop capturing blade 3 separation, and integrates the functions of washing and cooling, specifically, gas-liquid mixed fluid flowing out of an electrolytic tank enters a primary separation area of the device through a primary separation member 8 under the action of an alkali liquor circulating pump and gas lifting force, undergoes primary gas-liquid separation, then gas phase components upwards enter a packing layer 9, and when gas carrying fine alkali liquor mist drops passes through the packing layer 9, the mist drops adhere to the packing layer 9 and gradually gather into large drops to drop under the action of gravity. In addition, the gas and desalted water are in close contact with each other to carry out two-phase mass transfer on the surface of the packing, so that alkali liquor is further separated.

The gas cooled by the heat exchanger 12 continues to reach the drop capturing blades 3 upwards, when the gas passes through the gaps between the drop capturing blades 3, small drops carried by the gas are blocked by the drop capturing blades 3, when the gas is condensed into large drops, the large drops fall back to the liquid guide groove 14 step by relying on the dead weight of the drops to be condensed, and flow back to the condensate in the separation area below along the guide pipe 15. The gas product after free water removal finally leaves the device through a gas phase outlet 1 arranged at the top of the tank and enters the downstream, alkali liquor and desalted water are collected into condensate at the bottom of the tank along the inner cavity of the tank, and then the gas product is pumped out of the integrated device through a liquid outlet 7 by an alkali liquor circulating pump.

The gas-liquid mixture processing device of the embodiment greatly simplifies the gas product acquisition process, omits a plurality of connecting pipelines and auxiliary devices, saves the manufacturing cost and brings convenience to system installation, maintenance and necessary manual operation. The integrated level is high, saves space, and is suitable for skid-mounted and high-integrated design systems. By utilizing the spray header 10 and the packing layer 9, the gas is efficiently washed, and impurities carried by the gas are prevented from entering the downstream. The separation efficiency is high, and the method is suitable for the production of a large amount of liquid phases needing to be separated.

The particular features, structures, or characteristics may be combined in any suitable manner in any one or more embodiments or examples in this specification.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a gas-liquid mixture processing apparatus, its characterized in that includes the jar body, in the jar is internal by the elementary separating member, shower nozzle, heat exchanger and the drip subassembly of catching that up interval set up down in proper order, wherein:

The top of the tank body is provided with a gas phase outlet, the bottom of the tank body is provided with a liquid outlet, and the primary separation component is used for primary separation from a gas-liquid mixture, so that most of free liquid in the gas-liquid is separated; the spray header is downwards arranged and is used for spraying desalted water so as to remove part of alkali mist carried in the gas; the heat exchanger is used for cooling the gas-liquid mixture after water washing and further separating alkali mist in the gas-liquid;

The drop capturing assembly comprises drop capturing blades, liquid guide grooves are communicated with the drop capturing blades, and the liquid guide grooves are used for downwards guiding liquid condensed on the drop capturing blades.

2. The gas-liquid mixture processing apparatus according to claim 1, wherein the liquid guiding groove is horizontally arranged or obliquely arranged relative to a horizontal plane, the liquid guiding groove is communicated with the liquid guiding pipe, and the liquid guiding pipe is vertically arranged or obliquely arranged relative to the horizontal plane.

3. The gas-liquid mixture processing apparatus according to claim 1, wherein a communication port is provided on a side wall of the tank body, the communication port is communicated with the desalted water containing device, and the communication port is communicated with the shower head through a pipeline.

4. The gas-liquid mixture treatment apparatus according to claim 1, further comprising a packing layer above the primary separation member and below the shower head, the packing layer being for increasing a contact surface of desalted water and alkali mist to adhere and separate the alkali mist.

5. The gas-liquid mixture processing apparatus according to claim 1, wherein the heat exchanger includes a housing heat exchange tube provided with a refrigerant inlet and a refrigerant outlet, the heat exchange tube being located in the housing, the heat exchange tube being arranged vertically or obliquely with respect to a horizontal plane, the heat exchange tube being passed by the gas-liquid mixture.

6. The gas-liquid mixture processing apparatus according to claim 5, wherein the refrigerant inlet and the refrigerant outlet are located on opposite sides of the housing, the refrigerant inlet is located at a lower portion of the tank, and the refrigerant outlet is located at an upper portion of the tank.

7. The gas-liquid mixture processing apparatus according to claim 5, wherein a baffle plate is fixed in the housing, and the baffle plate is horizontally disposed or obliquely disposed with respect to a horizontal plane.

8. The gas-liquid mixture processing apparatus according to claim 1, wherein the drop capturing blade is of a corrugated, zig-zag or bag type structure.

9. A gas-liquid mixture processing apparatus according to claim 1, wherein the primary separation member comprises a baffle or a half-open tube or a finned tube.

10. The gas-liquid mixture processing apparatus according to claim 1, wherein the primary separation member comprises a half open pipe, a two-phase inflow port is provided on the tank, one end of the half open pipe is communicated with the two-phase inflow port, the other end of the half open pipe is disposed at an interval with an inner wall of the tank, an opening is provided on the half open pipe, and the opening is disposed downward.