Natural gas washing tank

Abstract

A natural gas washing tank relates to the technical field of gas purification equipment and comprises a tank body, the top of the tank body is provided with an upper seal head, the top of the upper seal head is provided with an exhaust port, the bottom of the tank body is provided with a lower seal head, the bottom of the lower seal head is provided with a drain outlet, the middle of the tank body is provided with a gas inlet, and a primary separation assembly is arranged in the gas inlet. A first-stage separation assembly is arranged in the tank body, a second-stage separation assembly is arranged in the tank body, and a wire mesh demister is arranged above the second-stage separation assembly, so that the separation effect is enhanced, and the purification is more thorough; after natural gas passes through the first-stage separation assembly, most liquid in the gas can be separated out, then the gas is separated through the second-stage separation assembly, and the separation effect is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas purification equipment technical field, concretely relates to a natural gas washing tank. BACKGROUND

[0002] Natural gas refers to a kind of combustible gas existing in nature, is a fossil fuel, including the gas (including oilfield gas, gas field gas, mud volcano gas, coal-bed gas and biogenic gas etc.) formed in atmosphere, hydrosphere and lithosphere various natural processes.It is the definition of "natural gas" that people have used for a long time, is the narrow definition from energy angle, refers to the mixture of hydrocarbon and non-hydrocarbon gas naturally stored in stratum.In petroleum geology, it usually refers to oilfield gas and gas field gas.Its composition is mainly hydrocarbon and contains non-hydrocarbon gas, so yellow or blue flame is produced by combustion.Natural gas is mainly used as fuel, can manufacture carbon black, chemical and liquefied petroleum gas, and propane and butane produced from natural gas are important raw materials of modern industry.Natural gas is mainly composed of gaseous low molecular weight hydrocarbon and non-hydrocarbon gas mixture.

[0003] Natural gas needs to be purified before being put into use, and the device for purification is generally washing tank.The existing washing tank is not complete in gas-liquid separation when purifying and washing natural gas, so the purification effect is not ideal. UTILITY MODEL CONTENT

[0004] In view of the above technical problems of prior art, the utility model aims at providing a natural gas washing tank, which can solve the problem of incomplete gas-liquid separation when purifying and washing natural gas by the existing washing tank, resulting in poor purification effect.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A natural gas washing tank, comprising a tank body, an upper head is arranged at the top of the tank body, an exhaust port is arranged at the top of the upper head, a lower head is arranged at the bottom of the tank body, a blowdown port is arranged at the bottom of the lower head, a gas inlet is arranged at the middle of the tank body, a first separation assembly is arranged in the gas inlet, a second separation assembly is arranged in the tank body, and a wire mesh demister is arranged above the second separation assembly.

[0007] Preferably, the first separation assembly comprises a converging throat pipe, one end of the converging throat pipe is connected with the gas inlet, the other end penetrates through the side wall of the tank body and is connected with a separation chamber, a water guide platform is arranged in the separation chamber, and a water leakage hole is arranged at the bottom of the separation chamber.

[0008] Preferably, the first separation assembly comprises an arc-shaped baffle, both ends of the arc-shaped baffle are welded with the inner wall of the tank body, a cover plate is arranged at the top of the arc-shaped baffle, and a gas permeation hole is arranged in the cover plate.

[0009] Preferably, the secondary separation component is a cyclone plate.

[0010] Preferably, the upper end of the tank is provided with a pressure transmitter and a pressure gauge, and the lower end of the tank is provided with a level gauge and a maintenance manhole.

[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: By setting up a primary separation component and a secondary separation component, this invention enhances the separation effect, making the purification more thorough. After passing through the primary separation component, most of the liquid in the natural gas can be separated, and then further separated by the secondary separation component, ensuring the separation effect. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of Embodiment 1 of the present invention;

[0015] Figure 3 This is a schematic diagram of the internal structure of Embodiment 2 of this utility model;

[0016] Figure 4 This is a schematic diagram of the first-stage separation component structure in Embodiment 2 of this utility model.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1-Tank body, 2-Upper head, 3-Exhaust port, 4-Lower head, 5-Drain outlet, 6-Air inlet, 7-Wire mesh demister, 8-Reducing throat, 9-Separation chamber, 10-Water guide platform, 11-Arc-shaped baffle, 12-Cover plate, 13-Ventilation hole, 14-Swirl plate, 15-Pressure transmitter, 16-Pressure gauge, 17-Level gauge, 18-Maintenance manhole, 19-Skirt. Detailed Implementation

[0019] The invention will now be described in detail with reference to the accompanying drawings, by way of example. Obviously, the described embodiments are only some embodiments of the invention, and not all embodiments.

[0020] Example 1

[0021] like Figures 1 to 2As shown, this utility model discloses a natural gas scrubbing tank. The scrubbing tank has a skirt 19 at the bottom and includes a tank body 1. The top of the tank body 1 has an upper end cap 2, and the top of the upper end cap 2 has an exhaust port 3. The bottom of the tank body 1 has a lower end cap 4, and the bottom of the lower end cap 4 has a drain port 5. The upper end of the tank body 1 is equipped with a pressure transmitter 15 and a pressure gauge 16. The middle part of the tank body 1 is equipped with an air inlet 6. The lower end of the tank body 1 is equipped with a level gauge 17 and a maintenance manhole 18. The level gauge 17 includes a high level gauge and a low level gauge. The air inlet 6 is equipped with a primary separation component. The tank body 1 is equipped with a secondary separation component. The secondary separation component adopts a swirl plate 14. A wire mesh demister 7 is provided above the secondary separation component.

[0022] Furthermore, in this embodiment, the primary separation component includes a converging throat 8. One end of the converging throat 8 is connected to the air inlet 6, and the other end penetrates the side wall of the tank 1 and is connected to a separation chamber 9. A water guide platform 10 is provided inside the separation chamber 9, and a water leakage hole is provided at the bottom of the separation chamber 9. During separation, the gas enters the converging throat 8 through the air inlet 6 and then enters the separation chamber 9. When the gas passes through the converging throat 8 and the separation chamber 9, most of the liquid and gas can be separated, reducing the separation pressure of the secondary separation component. At the same time, the two-stage separation makes the separation effect more thorough.

[0023] Example 2

[0024] Same as in Example 1, except that: Figures 3 to 4 As shown, the primary separation component includes an arc-shaped baffle 11, both ends of which are welded to the inner wall of the tank 1. A cover plate 12 is provided on the top of the arc-shaped baffle 11, and a vent hole 13 is provided on the cover plate 12. During separation, gas enters the space enclosed by the arc-shaped baffle 11 and the inner wall of the tank 1 through the air inlet 6, and gas-liquid separation occurs due to impact.

[0025] Working principle: When in use, natural gas passes through the first-stage separation component and the second-stage separation component in sequence through the inlet 6. The liquid and gas in the natural gas are separated. The gas passes upward through the wire mesh demister 7 and is discharged from the exhaust port 3. The liquid drips down the tank body 1 and is finally discharged through the drain port 5.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and application concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A natural gas washing tank, comprising a tank body (1), a top head (2) provided at the top of the tank body (1), an exhaust port (3) provided at the top of the top head (2), a bottom head (4) provided at the bottom of the tank body (1), a blowdown port (5) provided at the bottom of the bottom head (4), and an air inlet (6) provided at the middle of the tank body (1), characterized in that: The air inlet (6) is internally provided with a first separation assembly, the tank body (1) is internally provided with a second separation assembly, and a wire mesh demister (7) is arranged above the second separation assembly; The first separation assembly comprises a converging-diverging throat pipe (8), one end of the converging-diverging throat pipe (8) is connected with the air inlet (6), the other end penetrates through the side wall of the tank body (1) and is connected with a separation chamber (9), the separation chamber (9) is internally provided with a water guide platform (10), and the bottom of the separation chamber (9) is provided with a water leakage hole.

2. A natural gas scrubbing tank as claimed in claim 1, wherein: The first separation assembly comprises an arc-shaped baffle (11), both ends of the arc-shaped baffle (11) are welded with the inner wall of the tank body (1), the top of the arc-shaped baffle (11) is provided with a cover plate (12), and the cover plate (12) is provided with a gas permeation hole (13).

3. A natural gas scrubbing tank as claimed in claim 1, wherein: The second separation assembly adopts a cyclone plate (14).

4. The natural gas scrubbing tank of claim 1, wherein: The upper end of the tank body (1) is provided with a pressure transmitter (15) and a pressure gauge (16), and the lower end of the tank body (1) is provided with a liquid level meter (17) and a manhole (18).

Images