Rinsing structure and gas-liquid separation device

Abstract

The utility model relates to a kind of flushing structure and gas-liquid separation device, involve gas-liquid separation technical field.The utility model discloses flushing structure includes sensing component, infusion component and spraying component;Sensing component is set on tank body and with the mist trap net in tank body one-to-one, sensing component is configured to be able to detect the pressure difference of corresponding mist trap net two sides;Infusion component is one-to-one with sensing component, infusion component is connected with corresponding sensing component, and infusion component is configured to be able to open and close under the action of pressure difference;Spraying component is set in tank body and is located at the two sides of mist trap net respectively, and spraying component is connected with infusion component, and spraying component is configured to be able to reciprocate under the action of infusion component, and mist trap net is sprayed.The utility model discloses the technical scheme can flush mist trap net according to the specific jamming condition of mist trap net, both ensure the timely flushing of mist trap net, also save water resources.

Description

Technical Field

[0001] This utility model relates to the field of gas-liquid separation technology, and in particular to a flushing structure and a gas-liquid separation device. Background Technology

[0002] In the natural gas purification process, the feed gas undergoes gas-liquid exchange with lean liquid in the absorption tower, thereby removing hydrogen sulfide. The desulfurized gas then enters a gas-liquid separator for further gas-liquid separation. The gas-liquid separator consists of a tank and a mist eliminator installed inside the tank. When the desulfurized gas passes through the mist eliminator, the liquid entrained in the natural gas adheres to the screen, achieving gas-liquid separation. However, as the liquid volume increases, the mist eliminator's throughput capacity decreases, and the pressure differential increases, requiring timely flushing. In some cases, periodic flushing of the mist eliminator can prevent clogging. However, this method cannot be adjusted based on the specific clogging condition of the mist eliminator, leading to delayed flushing, reduced gas-liquid separation efficiency, and water waste, hindering efficient water resource utilization. Utility Model Content

[0003] This utility model provides a flushing structure and a gas-liquid separation device, which can flush the mist-catching net according to the specific clogging situation of the mist-catching net, ensuring timely flushing of the mist-catching net and saving water resources.

[0004] In a first aspect, embodiments of the present invention provide a flushing structure, comprising:

[0005] A sensing component is disposed on the tank body and corresponds one-to-one with the mist-catching nets inside the tank body. The sensing component is configured to detect the pressure difference on both sides of the corresponding mist-catching net.

[0006] An infusion assembly corresponds one-to-one with each of the sensing components, the infusion assembly is connected to the corresponding sensing component, and the infusion assembly is configured to open and close under the action of the pressure difference; and

[0007] A spray assembly is disposed inside the tank and located on both sides of the mist-catching net. The spray assembly is connected to the infusion assembly and is configured to reciprocate under the action of the infusion assembly to spray the mist-catching net.

[0008] In one embodiment, the infusion assembly includes:

[0009] A high-pressure infusion pipe is used to deliver high-pressure spray liquid to the spray assembly;

[0010] A first valve is installed on the high-pressure infusion pipe; and

[0011] The second valve is installed on the high-pressure infusion pipe and is located between the first valve and the spray assembly;

[0012] The first valve is connected to the sensing component and can be opened and closed under the action of the pressure difference.

[0013] In one embodiment, the spray assembly includes:

[0014] A spray track is disposed on the inner wall of the tank, and the spray track is parallel to the diameter direction of the tank; and

[0015] The nozzle is movably mounted on the spray track and is connected to the high-pressure liquid delivery pipe via a water supply pipe. The nozzle can reciprocate along the spray track under the action of the high-pressure spray liquid and spray the mist-collecting net.

[0016] In one embodiment, the sensing component includes a differential pressure transmitter, which includes a first pressure interface and a second pressure interface. The first pressure interface is connected to the tank and is used to detect the pressure above the mist-collecting net, and the second pressure interface is connected to the tank and is used to detect the pressure below the mist-collecting net.

[0017] In one embodiment, the flushing structure further includes a flow guiding component disposed at the bottom of the mist-catching net to collect the condensate on the mist-catching net.

[0018] In one embodiment, the flow guiding component includes a plurality of flow guiding strips, which are arranged at intervals and parallel to each other;

[0019] The guide strip includes multiple guide protrusions and multiple guide recesses. The multiple guide protrusions are arranged at intervals along the height direction, and the multiple guide recesses are arranged at intervals along the height direction, wherein the multiple guide recesses and the multiple guide protrusions are arranged alternately.

[0020] In one embodiment, the cross-sectional shape of the guide protrusion is at least one of an arc shape, a triangle, and a trapezoid; the cross-sectional shape of the guide concave portion is at least one of an arc shape, a triangle, and a trapezoid.

[0021] In one embodiment, the spacing of the guide strips is 100 mm.

[0022] In one embodiment, the pressure of the high-pressure spray liquid is 2.5-3 MPa.

[0023] Secondly, this utility model provides a gas-liquid separation device, including the flushing structure as described above.

[0024] Compared with existing technologies, the advantages of this utility model embodiment are as follows: by setting a sensing component to detect the pressure difference on both sides of the mist-catching net, and controlling the opening and closing of the infusion component through the pressure difference; when the infusion component is open, the spray component reciprocates under the action of the infusion component and sprays the mist-catching net; when the infusion component is closed, the spray component stops moving and spraying; thus, the mist-catching net is flushed according to the specific blockage condition, ensuring timely flushing of the mist-catching net, improving the gas-liquid separation effect, saving water resources, and avoiding unnecessary waste. In addition, by reciprocating under the action of the infusion component, the spraying range of the spray component is expanded, ensuring the cleanliness and cleaning effect of the mist-catching net. Attached Figure Description

[0025] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the flushing structure provided in one embodiment of the present invention;

[0027] Figure 2 yes Figure 1 A top view of the spray assembly provided in the embodiment;

[0028] Figure 3 This is a top view of a spray assembly provided in another embodiment of the present invention;

[0029] Figure 4 This is a side view of the spray assembly provided by this utility model;

[0030] Figure 5 yes Figure 1 A schematic diagram of the flow guiding component provided in the embodiment;

[0031] Figure 6 This is a schematic diagram of the flow guiding component provided in another embodiment of the present invention.

[0032] Figure label:

[0033] 1. Tank body; 2. Fog catching net;

[0034] 10. Sensing components; 110. Differential pressure transmitter;

[0035] 20. Infusion assembly; 210. High-pressure infusion tubing; 220. First valve; 230. Second valve;

[0036] 30. Sprinkler assembly; 310. Sprinkler track; 320. Sprinkler head; 330. Water supply pipe; 340. Solenoid valve;

[0037] 40. Flow guide assembly; 410. Flow guide strip; 420. Flow guide recess; 430. Flow guide protrusion; 440. Hook. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] In the natural gas purification process, the feed gas undergoes gas-liquid exchange with lean liquid in the absorption tower, thereby removing hydrogen sulfide. The desulfurized gas then enters a gas-liquid separator for further gas-liquid separation. The gas-liquid separator consists of a tank and a mist eliminator installed inside the tank. When the desulfurized gas passes through the mist eliminator, the liquid entrained in the natural gas adheres to the screen, achieving gas-liquid separation. However, as the liquid volume increases, the mist eliminator's throughput capacity decreases, and the pressure differential increases, requiring timely flushing. In some cases, periodic flushing of the mist eliminator can prevent clogging. However, this method cannot be adjusted based on the specific clogging condition of the mist eliminator, leading to delayed flushing, reduced gas-liquid separation efficiency, and water waste, hindering efficient water resource utilization.

[0040] Example 1

[0041] like Figure 1 As shown, in order to solve the above-mentioned technical problems, this utility model embodiment provides a rinsing structure, including a sensing component 10, an infusion component 20, and a spraying component 30; the sensing component 10 is disposed on the tank body 1 and corresponds one-to-one with the mist-catching net 2 inside the tank body 1, and the sensing component 10 is configured to detect the pressure difference on both sides of the corresponding mist-catching net 2; the infusion component 20 corresponds one-to-one with the sensing component 10 and is connected to the corresponding sensing component 10, and the infusion component 20 is configured to open and close under the action of the pressure difference; the spraying component 30 is disposed inside the tank body 1 and is located on both sides of the mist-catching net 2, the spraying component 30 is connected to the infusion component 20, and the spraying component 30 is configured to reciprocate under the action of the infusion component 20 and spray the mist-catching net 2.

[0042] As can be seen from the above, by setting the sensing component 10 to detect the pressure difference on both sides of the mist-catching net 2, and controlling the opening and closing of the infusion component 20 through the pressure difference; when the infusion component 20 is open, the spray component 30 reciprocates under the action of the infusion component 20 and sprays the mist-catching net 2; when the infusion component 20 is closed, the spray component 30 stops moving and spraying; thus, the mist-catching net 2 is flushed according to the specific blockage condition, ensuring timely flushing of the mist-catching net 2, improving the gas-liquid separation effect, saving water resources, and avoiding unnecessary waste. In addition, by reciprocating under the action of the infusion component 20, the spraying range of the spray component 30 is expanded, ensuring the cleanliness and cleaning effect of the mist-catching net 2.

[0043] It should be noted that a preset pressure can be set according to specific needs. When the pressure difference detected by the sensing component 10 is less than the preset pressure, the infusion component 20 is turned off, and when the pressure difference detected by the sensing component 10 is greater than the preset pressure, the infusion component 20 is turned on. In addition, the magnitude of the pressure difference is related to the clogging of the mist-catching net 2. The more severe the clogging of the mist-catching net 2, the greater the pressure difference. Thus, the unclogging status of the mist-catching net 2 can be judged by the magnitude of the pressure difference.

[0044] It should also be noted that, such as Figure 1 As shown, multiple mist-catching nets 2 are provided inside the tank 1, and the multiple mist-catching nets 2 are arranged at intervals along the height direction; therefore, there are multiple sensing components 10 and infusion components 20, and the number is equal to the number of mist-catching nets 2.

[0045] Example 2

[0046] like Figure 1 As shown, the flushing structure includes a sensing component 10, an infusion component 20, and a spraying component 30. The sensing component 10 is disposed on the tank body 1 and corresponds one-to-one with the mist-catching net 2 inside the tank body 1. The sensing component 10 is configured to detect the pressure difference on both sides of the corresponding mist-catching net 2. The infusion component 20 corresponds one-to-one with the sensing component 10 and is connected to the corresponding sensing component 10. The infusion component 20 is configured to open and close under the action of the pressure difference. The spraying component 30 is disposed inside the tank body 1 and is located on both sides of the mist-catching net 2. The spraying component 30 is connected to the infusion component 20 and is configured to reciprocate under the action of the infusion component 20, and spray the mist-catching net 2.

[0047] As can be seen from the above, by setting the sensing component 10 to detect the pressure difference on both sides of the mist-catching net 2, and controlling the opening and closing of the infusion component 20 through the pressure difference; when the infusion component 20 is open, the spray component 30 reciprocates under the action of the infusion component 20 and sprays the mist-catching net 2; when the infusion component 20 is closed, the spray component 30 stops moving and spraying; thus, the mist-catching net 2 is flushed according to the specific blockage condition, ensuring timely flushing of the mist-catching net 2, improving the gas-liquid separation effect, saving water resources, and avoiding unnecessary waste. In addition, by reciprocating under the action of the infusion component 20, the spraying range of the spray component 30 is expanded, ensuring the cleanliness and cleaning effect of the mist-catching net 2.

[0048] It should be noted that a preset pressure can be set according to specific needs. When the pressure difference detected by the sensing component 10 is less than the preset pressure, the infusion component 20 is turned off, and when the pressure difference detected by the sensing component 10 is greater than the preset pressure, the infusion component 20 is turned on. In addition, the magnitude of the pressure difference is related to the clogging of the mist-catching net 2. The more severe the clogging of the mist-catching net 2, the greater the pressure difference. Thus, the unclogging status of the mist-catching net 2 can be judged by the magnitude of the pressure difference.

[0049] It should also be noted that, such as Figure 1 As shown, multiple mist-catching nets 2 are provided inside the tank 1, and the multiple mist-catching nets 2 are arranged at intervals along the height direction; therefore, there are multiple sensing components 10 and infusion components 20, and the number is equal to the number of mist-catching nets 2.

[0050] like Figure 1 As shown, in some embodiments, the infusion assembly 20 includes a high-pressure infusion tube 210, a first valve 220, and a second valve 230; the high-pressure infusion tube 210 is used to deliver high-pressure spray liquid to the spray assembly 30; the first valve 220 is disposed on the high-pressure infusion tube 210; the second valve 230 is disposed on the high-pressure infusion tube 210 and is located between the first valve 220 and the spray assembly 30; wherein, the first valve 220 is connected to the sensing assembly 10, and the first valve 220 can be opened and closed under the action of pressure difference.

[0051] By setting a first valve 220 that can be opened and closed under pressure difference, the opening and closing of the high-pressure infusion pipe 210 can be controlled by pressure difference, thereby controlling the opening and closing of the spray assembly 30. When the first valve 220 is open, the high-pressure spray liquid is delivered to the spray assembly 30 through the high-pressure infusion pipe 210. When the first valve 220 is closed, the high-pressure infusion pipe 210 is disconnected, and the delivery of high-pressure spray liquid to the spray assembly 30 stops.

[0052] It should be noted that the high-pressure spray solution is desalinated water. Desalinated water is water in which easily removable strong electrolytes have been removed or reduced to a certain extent, and the remaining salt content should be between 1 and 5 mg / L.

[0053] It should also be noted that the flushing structure also includes a water tank, which stores high-pressure spray liquid, and the water tank is connected to the high-pressure infusion pipe 210.

[0054] It should also be noted that the first valve 220 is a pneumatic diaphragm pressure regulating valve, and the second valve 230 is a ball valve, and the second valve 230 is kept in the normally open state.

[0055] It should also be noted that when the pressure difference detected by the sensing component 10 is less than the preset pressure, the first valve 220 is closed, and when the pressure difference detected by the sensing component 10 is greater than the preset pressure, the first valve 220 is opened.

[0056] like Figure 2 , Figure 4As shown, in some embodiments, the spray assembly 30 includes a spray track 310 and a nozzle 320; the spray track 310 is disposed on the inner wall of the tank 1 and is parallel to the diameter direction of the tank 1; the nozzle 320 is movably disposed on the spray track 310 and is connected to the high-pressure liquid delivery pipe 210 through a water supply pipe 330; wherein, the nozzle 320 can reciprocate along the spray track 310 under the action of the high-pressure spray liquid and spray the mist catching net 2.

[0057] The spray head 320 is driven by the water pressure of the high-pressure spray liquid to move along the spray track 310, making full use of pressure energy. This not only saves energy but also avoids the use of electricity inside the tank 1, improving safety. Since gas-liquid separation inside the tank 1 will separate flammable gas, using electricity to drive the spray head 320 would pose a safety hazard. The continuous reciprocating movement of the spray head 320 along the spray track 310 achieves full-range cleaning of the mist-collecting net 2, avoiding cleaning dead spots.

[0058] It should be noted that, as Figure 2 As shown, the number of spray tracks 310 can be one or more; for example... Figure 3 As shown, when there are multiple spray tracks 310, the multiple spray tracks 310 are parallel to each other, and each spray track 310 is provided with a nozzle 320; in addition, the spray track 310 is a slide rail.

[0059] It should also be noted that the water supply pipe 330 is a retractable water pipe, and a solenoid valve 340 is installed on the water supply pipe 330 to control the opening and closing of the water supply pipe 330.

[0060] like Figure 1 As shown, in some embodiments, the sensing component 10 includes a differential pressure transmitter 110, which includes a first pressure interface and a second pressure interface. The first pressure interface is connected to the tank 1 and is used to detect the pressure on the upper side of the mist-catching net 2, and the second pressure interface is connected to the tank 1 and is used to detect the pressure on the lower side of the mist-catching net 2.

[0061] When the mist-collecting net 2 becomes clogged, a pressure difference will occur between the upper and lower sides of the mist-collecting net 2. Therefore, by setting a differential pressure transmitter 110, the pressure difference between the upper and lower sides of the mist-collecting net 2 can be monitored, so that the spray assembly 30 can flush the mist-collecting net 2 in a timely manner.

[0062] It should be noted that the differential pressure transmitter 110 is electrically connected to the first valve 220. The differential pressure transmitter 110 is an instrument used to measure the pressure difference of fluids. It is widely used in industrial automation control systems. By measuring the pressure difference between the media on both sides and converting it into an electrical signal output, high-precision measurement of differential pressure can be achieved.

[0063] like Figure 5 , Figure 6As shown, in some embodiments, the rinsing structure further includes a flow guiding component 40 disposed at the bottom of the mist trap 2 to collect the condensate on the mist trap 2.

[0064] By setting the flow guiding component 40, not only can the condensate after gas-liquid separation be collected, achieving efficient collection of the condensate, but also when rinsing the mist catching net 2, the spray liquid and the condensate on the mist catching net 2 can be quickly dropped along the flow guiding component 40, making the mist catching net 2 cleaner.

[0065] It should be noted that the gas-liquid separation process is carried out on the desulfurized natural gas using a gas-liquid separator. During the gas-liquid separation process, condensate is separated out. Condensate refers to the liquid hydrocarbon mixture recovered from natural gas, which usually includes light hydrocarbons such as ethane, propane, and butane.

[0066] It should also be noted that the flow guiding component 40 covers the entire effective area of ​​the fog-catching net 2, and the height of the flow guiding component 40 is set according to the diameter of the fog-catching net 2.

[0067] like Figure 5 As shown, in some embodiments, the flow guiding assembly 40 includes a plurality of flow guiding strips 410, which are spaced apart and parallel to each other; the flow guiding strips 410 include a plurality of flow guiding protrusions 430 and a plurality of flow guiding recesses 420, the plurality of flow guiding protrusions 430 are spaced apart along the height direction, and the plurality of flow guiding recesses 420 are spaced apart along the height direction, wherein the plurality of flow guiding recesses 420 and the plurality of flow guiding protrusions 430 are arranged alternately.

[0068] By forming a flow channel between two adjacent flow guides 410, and utilizing the undulating surface formed by multiple flow guide recesses 420 and flow guide protrusions 430, the following advantages are achieved: First, it increases flow disturbance and improves separation efficiency. The undulating surface formed by the flow guide protrusions 430 and flow guide recesses 420 induces local eddies and turbulence in the fluid, increasing the probability of collisions between droplets and promoting the coalescence of condensate, thereby accelerating the separation of droplets from the gas phase and improving separation efficiency. Second, it expands the effective contact area. Through the periodic changes in geometry, the contact area between the flow guide 410 and the fluid is significantly increased. The larger surface area enhances the adhesion and flow guidance capabilities of the condensate, reducing the risk of secondary droplet entrainment, which is especially suitable for condensate conditions with high gas velocities or low viscosity. Third, it optimizes anti-clogging performance. The non-uniform flow characteristics of the flow guide channel reduce the deposition of solid particles or impurities on the surface of the flow guide 410. Frequent changes in flow direction generate shear force, flushing away potential blockages and reducing maintenance frequency.

[0069] It should be noted that, as Figure 5 As shown, the guide belt 410 is suspended on the mist-catching net 2 by the hook 440 for easy replacement; the guide belt 410 is made of corrosion-resistant material, for example, the guide belt 410 is made of polytetrafluoroethylene.

[0070] In some embodiments, the cross-sectional shape of the guide protrusion 430 is at least one of an arc shape, a triangle, and a trapezoid; the cross-sectional shape of the guide recess 420 is at least one of an arc shape, a triangle, and a trapezoid.

[0071] It should be noted that the cross-sectional shape of the guide protrusion 430 and the guide recess 420 is the same; such as Figure 4 As shown, both the guide protrusion 430 and the guide recess 420 are arc-shaped, so that the guide strip 410 is wavy and forms a wavy guide groove.

[0072] It should also be noted that, such as Figure 6 As shown, the width of the guide protrusion 430 increases along the height direction, meaning the width of the lower guide protrusion 430 is greater than the width of the upper guide protrusion 430; similarly, the width of the guide recess 420 increases along the height direction, meaning the width of the lower guide recess 420 is greater than the width of the upper guide recess 420. This further increases the probability of collisions between droplets, and between droplets and the guide recess 420 and guide protrusion 430. Simultaneously, it expands the effective contact area, increasing the contact area between the guide band 410 and the fluid, thereby further accelerating the separation of droplets from the gas phase and improving separation efficiency. Furthermore, the height direction is parallel to the axial direction of the tank.

[0073] It should also be noted that, such as Figure 6 As shown, the width of the guide protrusion 430 is L2, and the width of the guide recess 420 is L3.

[0074] In some embodiments, the spacing of the guide strips 410 is 100 mm.

[0075] It should be noted that, as Figure 5 , Figure 6 As shown, the spacing of the guide strips 410 is L1, and L1 is 100mm.

[0076] In some embodiments, the pressure of the high-pressure spray liquid is 2.5-3 MPa.

[0077] By limiting the pressure of the high-pressure spray liquid, insufficient pressure of the high-pressure spray liquid is avoided, thereby ensuring that the nozzle 320 can move back and forth.

[0078] Example 3

[0079] This utility model embodiment also provides a gas-liquid separation device, including the flushing structure of any embodiment of this utility model, thereby having all the technical effects brought about by the technical solutions of the above embodiments.

[0080] It should also be noted that tank 1 is equipped with a liquid inlet, a liquid outlet, and a vent.

[0081] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A flushing structure, characterized in that, include: A sensing component is disposed on the tank body and corresponds one-to-one with the mist-catching nets inside the tank body. The sensing component is configured to detect the pressure difference on both sides of the corresponding mist-catching net. An infusion assembly corresponds one-to-one with the sensing assembly, the infusion assembly is connected to the corresponding sensing assembly, and the infusion assembly is configured to open and close under the action of the pressure difference; as well as A spray assembly is disposed inside the tank and located on both sides of the mist-catching net. The spray assembly is connected to the infusion assembly and is configured to reciprocate under the action of the infusion assembly to spray the mist-catching net.

2. The flushing structure according to claim 1, characterized in that, The infusion assembly includes: A high-pressure infusion pipe is used to deliver high-pressure spray liquid to the spray assembly; A first valve is installed on the high-pressure infusion pipe; and The second valve is installed on the high-pressure infusion pipe and is located between the first valve and the spray assembly; The first valve is connected to the sensing component and can be opened and closed under the action of the pressure difference.

3. The flushing structure according to claim 2, characterized in that, The spray assembly includes: A spray track is disposed on the inner wall of the tank, and the spray track is parallel to the diameter direction of the tank; and The nozzle is movably mounted on the spray track and is connected to the high-pressure liquid delivery pipe via a water supply pipe. The nozzle can reciprocate along the spray track under the action of the high-pressure spray liquid and spray the mist-collecting net.

4. The flushing structure according to any one of claims 1-3, characterized in that, The sensing component includes a differential pressure transmitter, which includes a first pressure interface and a second pressure interface. The first pressure interface is connected to the tank and is used to detect the pressure on the upper side of the mist-collecting net, and the second pressure interface is connected to the tank and is used to detect the pressure on the lower side of the mist-collecting net.

5. The flushing structure according to any one of claims 1-3, characterized in that, The flushing structure also includes a flow guiding component disposed at the bottom of the mist-catching net to collect the condensate on the mist-catching net.

6. The flushing structure according to claim 5, characterized in that, The flow guiding component includes multiple flow guiding strips, which are arranged at intervals and parallel to each other; The guide strip includes multiple guide protrusions and multiple guide recesses. The multiple guide protrusions are arranged at intervals along the height direction, and the multiple guide recesses are arranged at intervals along the height direction, wherein the multiple guide recesses and the multiple guide protrusions are arranged alternately.

7. The flushing structure according to claim 6, characterized in that, The cross-sectional shape of the guide protrusion is at least one of an arc shape, a triangle shape, and a trapezoid shape; the cross-sectional shape of the guide concave part is at least one of an arc shape, a triangle shape, and a trapezoid shape.

8. The flushing structure according to claim 6, characterized in that, The spacing of the guide strips is 100mm.

9. The flushing structure according to claim 2, characterized in that, The pressure of the high-pressure spray liquid is 2.5-3 MPa.

10. A gas-liquid separation device, characterized in that, Includes the flushing structure as described in any one of claims 1-9.

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