Gas-liquid separation plate, gas-liquid separation plate assembly and gas-liquid separator

Abstract

The invention relates to the field of gas-liquid separation, in particular to a gas-liquid separation plate, a gas-liquid separation plate assembly and a gas-liquid separators, the gas-liquid separation plate comprises a plate body, the plate body is provided with a plurality of rows of separation hole groups, each row of separation hole group comprises a plurality of separation holes, and the separation holes in every two adjacent rows of separation hole groups are distributed in a staggered mode; the upper side of each separation hole is correspondingly connected with a separation piece, an acute angle is formed between each separation piece and the corresponding separation hole, and in the same row, every two adjacent separation pieces are bent towards the two sides of the plate body respectively. A cyclone separator assembly, a gas-liquid separation plate assembly and a gas-liquid separation filter element assembly are sequentially arranged in the gas-liquid separator from bottom to top, a medium impacts and turns back a special separation piece of a gas-liquid separation plate, and small liquid drops are gathered into large liquid drops on the surface of the gas-liquid separation plate to fall down, so that secondary separation is achieved. According to the gas-liquid separator, the specific advantages and disadvantages of different gas-liquid separation structures can be optimized according to different working conditions, gas-liquid separation can be carried out more reliably, and the optimal effect and performance are achieved.

Description

Technical Field

[0001] The present invention relates to the field of gas-liquid separation, and specifically to a gas-liquid separation plate, a gas-liquid separation plate assembly, and a gas-liquid separator. Background Art

[0002] In traditional gas-liquid separation methods, since the gas temperature is limited by energy consumption and cooling medium and cannot be further reduced, not all molecules in the mixed gas can be condensed into a liquid state, and there are still some in the form of a gas-phase saturated state or liquid droplets mixed in the raw gas. Individual processes use a water washing and absorption method to separate gaseous droplets, but due to high energy consumption, new liquid mist entrainment is caused, resulting in problems such as circulation and liquid carry-over work, and even flooding accidents in the synthesis tower.

[0003] The above problems generally result in about 0.5%-1.8% of the gas products in the total circulating gas being unable to be "taken out" due to separation problems and repeatedly circulating and consuming energy in the system. This not only causes product loss and affects the production capacity of the device, but also reduces the reaction driving force, intensifies side reactions, increases the raw gas consumption quota, seriously endangers the downstream working conditions, causes liquid hammer in the circulation machine, abnormal operation, etc., and even leads to permanent poisoning and inactivation of the catalyst. Summary of the Invention

[0004] The purpose of the present invention is to provide a gas-liquid separation plate, a gas-liquid separation plate assembly, and a gas-liquid separator to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A gas-liquid separation plate includes a plate body. The plate body is provided with multiple rows of separation hole groups. Each row of the separation hole groups includes multiple separation holes, and the separation holes in adjacent two rows of the separation hole groups are staggeredly distributed; a separation piece is correspondingly connected above each separation hole. The separation piece and the separation hole form an acute angle, and in the same row, the adjacent two separation pieces are bent towards the two sides of the plate body respectively.

[0006] Preferably, the separation piece and the separation hole have the same shape and size.

[0007] Preferably, the separation hole has a strip-shaped structure, and the upper side is the short side of the strip-shaped structure.

[0008] Preferably, the angle between the separation piece and the separation hole is 30° to 60°.

[0009] Preferably, multiple rows of the separation hole groups are equidistantly distributed.

[0010] Preferably, in the same row, multiple separation holes are equidistantly distributed.

[0011] The present invention also provides a gas-liquid separation plate assembly, which includes a plurality of the above-mentioned gas-liquid separation plates. The gas-liquid separation plates are arranged vertically, and the plurality of gas-liquid separation plates are equidistantly distributed. The hole positions of the separation holes of two adjacent gas-liquid separation plates are staggeredly distributed.

[0012] The present invention also provides a gas-liquid separator, which includes a tank body, a medium inlet and a medium outlet. Inside the tank body, a cyclone separator assembly, the above-mentioned gas-liquid separation plate assembly and a gas-liquid separation filter element assembly are sequentially arranged from bottom to top; the medium inlet is arranged on the tank body and is at the same height as the air inlet of the cyclone separator assembly; the medium outlet is arranged at the top of the tank body.

[0013] Preferably, it further includes a drain pipe, which is connected from two places, one is the bottom of the gas-liquid separation filter element assembly, and the other is the bottom of the tank body.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] ① The gas-liquid separation plate structure of the present invention provides a new idea for baffle separation, and greatly improves the gas-liquid separation effect of the medium passing through this structure;

[0016] ② The present invention arranges the gas-liquid separation plate in the gas-liquid separator, so that the liquid in the medium can be better and effectively separated, and liquid droplets of the order of hundreds of microns, tens of microns and microns can be separated respectively;

[0017] ③ The gas-liquid separator of the present invention replaces the equipment configuration of 1-2 mechanical separators + 1 coalescing separator and other equipment in the traditional separation method, reduces the foundation of multiple pieces of equipment to one piece of equipment, saves space and a large amount of investment, and has great industrial value for large-scale devices;

[0018] ④ The gas-liquid separator of the present invention can optimize the inherent advantages and disadvantages of different gas-liquid separation structures according to different working conditions, and can perform gas-liquid separation more reliably to achieve the best effect and performance; since the filter element in the gas-liquid separation filter element assembly is made of non-metallic material and has a certain service life, once the gas-liquid separation filter element fails, most of the liquid droplets can still be effectively separated under the action of cyclone separation and gas-liquid separation plates, protecting the safe operation of the subsequent equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of an embodiment of the gas-liquid separation plate of the present invention;

[0020] Figure 2 is a schematic structural diagram of another embodiment of the gas-liquid separation plate of the present invention;

[0021] Figure 3 is a schematic structural diagram of an embodiment of the gas-liquid separator of the present invention. Detailed implementation mode

[0022] Refer to Figure 1 Or Figure 2 Figure 2

[0023] A separation sheet 63 is correspondingly connected to the upper side of each separation hole 62. The separation sheet 63 has the same shape and size as the separation hole 62. The separation hole 62 has a strip structure, and the upper side is the short side of the strip structure. An acute angle is formed between the separation sheet 63 and the separation hole 62, preferably ranging from 30° to 60°, and most preferably the angle between the two is controlled around 45°. In the same row, the adjacent two separation sheets 63 are bent towards the two sides of the plate body 61 respectively.

[0024] The setting of the separation hole 62 and the separation sheet 63 can be realized by the punching process. The punched hole is the separation hole 62. During the punching process, a small piece of the plate being punched is retained, so that this piece of the plate remains on the plate body 61 and forms an angle of 45° with the separation hole 62. This piece of the plate is the separation sheet 63.

[0025] By placing the gas-liquid separation plate vertically, if there are liquid droplets in the gas and the gas flows upward through the gas-liquid separation plate, the direction of the liquid can be changed through the rapid collision during the flow, so that the liquid drops. Since the gas speed is relatively fast, the gas part can continue to flow upward, thus achieving the effect of gas-liquid separation.

[0026] The present invention also discloses a gas-liquid separation plate assembly, which includes multiple pieces of the above-mentioned gas-liquid separation plates. The gas-liquid separation plates are arranged vertically, and multiple gas-liquid separation plates are equally spaced. The hole positions of the separation holes 62 of the adjacent two gas-liquid separation plates are staggered, and can be combined Figure 1 And Figure 2 Compared.

[0027] The present invention also discloses a gas-liquid separator. As Figure 3 shown, the gas-liquid separator includes a tank body 2, a medium inlet 1, a medium outlet 3 and a drain pipe 4. Inside the tank body 2, a cyclone separator assembly 5, the above-mentioned gas-liquid separation plate assembly 6 and a gas-liquid separation filter element assembly 7 are sequentially arranged from bottom to top, that is: the gas-liquid separation filter element assembly 7 is arranged at the upper part of the tank body 2, the gas-liquid separation plate assembly 6 is arranged in the middle of the tank body 2, and the cyclone separator assembly 5 is arranged at the bottom of the tank body 2. The medium inlet 1 is arranged on the tank body 2 and is at the same height as the air inlet of the cyclone separator assembly 5; the medium outlet 3 is arranged at the top of the tank body 2; the drain pipe 4 is led out from two places, one is the bottom of the gas-liquid separation filter element assembly 7, and the other is the bottom of the tank body 2.

[0028] The gas-liquid separation filter element assembly 7 includes a partition plate and a filter element. The filter element is arranged on the partition plate and is made of glass fiber material. The above-mentioned cyclone separator assembly 5 and gas-liquid separation filter element assembly 7 are common structures in gas-liquid separation technology and are well-known to those skilled in the art. Therefore, these two parts will not be elaborated too much.

[0029] When the gas-liquid separator based on the above structure is working, it goes through the following process steps:

[0030] 1) After the medium flows tangentially into the equipment separation chamber from the medium inlet, it is first preliminarily separated by the cyclone separator assembly. The principle is that during the turning process of the main fluid, liquid droplets entrained in the gas phase are captured by inertial collision, thereby purifying the gas phase or obtaining the liquid phase, so that large liquid droplets and impurities are separated from the gas by gravity through the cyclone structure;

[0031] 2) Then, it is secondarily separated by the gas-liquid separation plate assembly. The principle is that when small liquid droplets pass through the gas-liquid separation plate assembly, by hitting and turning back the special separation pieces of the gas-liquid separation plate, small liquid droplets converge into large liquid droplets on the surface of the gas-liquid separation plate and fall along the gas-liquid separation plate by gravity;

[0032] 3) Finally, it is tertiarily separated by the gas-liquid separation filter element assembly at the uppermost part. The principle is that the medium of the filter element has liquid repellency, which can prevent liquid from entering and only allows gas without liquid to pass through, thereby achieving a better separation effect and removing fine liquid droplets.

[0033] It should be noted that when using the gas-liquid separation filter element assembly: the liquid and a little solid impurity to be separated and removed are blocked on the inner surface of the filter element. As the impurities on the surface of the filter element increase, a pressure difference will appear between the medium inlet and outlet. When the pressure difference reaches the process requirement, the equipment should stop or switch to another equipment for operation. When replacing or cleaning, the residual medium in the equipment should be drained first to ensure that the equipment is in a normal pressure state, and then the upper cover of the equipment can be opened to clean the equipment or replace the filter element and then continue to work.

[0034] The gas-liquid separator disclosed in the present invention has the following beneficial effects:

[0035] 1) The liquid in the medium can be better effectively separated, and liquid droplets of hundreds of microns, tens of microns and microns can be separated respectively;

[0036] 2) It replaces the equipment configuration of 1-2 mechanical separators + 1 coalescing separator and other equipment in the traditional separation method, reduces the foundation of multiple equipment to one equipment, saves space and a large amount of investment, and has great industrial value for large-scale devices;

[0037] 3) It can optimize the inherent advantages and disadvantages of different gas-liquid separation structures according to different working conditions, enabling more reliable gas-liquid separation and achieving the best effects and performance. Since the filter element in the gas-liquid separation filter element assembly is made of non-metallic material and has a certain service life, once the gas-liquid separation filter element fails, most of the liquid droplets can still be effectively separated under the action of the cyclone separation and the gas-liquid separation plate, protecting the safe operation of the subsequent equipment.

[0038] In summary, the present invention provides a new idea for baffle separation through a special gas-liquid separation plate structure, greatly improving the gas-liquid separation effect of the medium passing through this structure; by arranging the gas-liquid separation plate in the gas-liquid separator, the gas-liquid separator can better perform gas-liquid separation.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Gas-liquid separation plate, characterized in that: It comprises a plate body, which is provided with multiple rows of separation hole groups, each row of the separation hole groups comprises multiple separation holes, and the separation holes in two adjacent rows of the separation hole groups are staggered; a separation sheet is correspondingly connected to the upper side of each separation hole, an acute angle is formed between the separation sheet and the separation hole, and in the same row, two adjacent separation sheets are respectively bent toward the two sides of the plate body.

2. The gas-liquid separation plate according to claim 1, characterized in that: The separation sheet and the separation hole have the same shape and size.

3. The gas-liquid separation plate according to claim 1 or 2, characterized in that: The separation hole is in a strip-shaped structure, and the upper side is the short side of the strip-shaped structure.

4. The gas-liquid separation plate according to claim 1, characterized in that: The angle between the separation sheet and the separation hole is 30° to 60°.

5. The gas-liquid separation plate according to claim 1, characterized in that: The plurality of rows of separation hole groups are equidistantly distributed.

6. The gas-liquid separation plate according to claim 1, characterized in that: In the same row, the plurality of separation holes are distributed at equal distances.

7. A gas-liquid separation plate assembly, characterized in that: It comprises a plurality of gas-liquid separation plates as described in any one of claims 1 to 6, wherein the gas-liquid separation plates are vertically arranged, and the plurality of gas-liquid separation plates are equidistantly distributed, and the positions of the separation holes of two adjacent gas-liquid separation plates are staggered.

8. Gas-liquid separator, characterized in that: It comprises a tank body, a medium inlet and a medium outlet, wherein a cyclone separator assembly, a gas-liquid separation plate assembly as claimed in claim 7 and a gas-liquid separation filter element assembly are sequentially arranged inside the tank body from bottom to top; the medium inlet is arranged in the tank body and is at the same height as the air inlet of the cyclone separator assembly; the medium outlet is arranged at the top of the tank body.

9. The gas-liquid separator according to claim 8, characterized in that: It also includes a drain pipe, which is connected from two places, one is the bottom of the gas-liquid separation filter element component, and the other is the bottom of the tank body.

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