Low-temperature purification device for natural gas production

Abstract

The utility model relates to the technical field of natural gas production equipment, and discloses a low-temperature purification device for natural gas production, which comprises a base, a stabilizing mechanism is arranged at the top of the base, a high-pressure buffer tank is arranged on the left side of the top of the base, and a cold purification mechanism is arranged on the side surface of the high-pressure buffer tank. The cold purification mechanism comprises a treatment pipe fitting, a throttling valve, a shunting pipeline, a top end U-shaped frame, a temperature sensor, a connecting arc plate, a connecting block, a placing plate, cooling equipment and a cooling circulating pipe. According to the low-temperature purification device for natural gas production, by arranging the cold purification mechanism, after natural gas is subjected to the multi-stage throttling and gas-liquid separation process, the needed purification effect can be achieved, gas is not only filtered through a screen layer, impurities in air can be effectively treated, the effect is good during use, a placement plate is arranged on the surface, and the purification effect is good. Cooling equipment and a cooling circulating pipe are arranged, so that cooling can be further facilitated, and a better low-temperature purification effect is realized.

Description

Technical Field

[0001] This utility model relates to the field of natural gas production equipment technology, specifically a low-temperature purification device for natural gas production. Background Technology

[0002] With the adjustment of the global energy structure and the continuous growth in demand for clean energy, natural gas, as a relatively clean and efficient fossil energy source, occupies an increasingly important position in the energy market. In order to meet the needs of efficient and safe application of natural gas in various fields, purification of natural gas to improve its quality has become a key link in the natural gas production process.

[0003] Existing technology discloses a natural gas purification device (publication number CN217662430U), comprising a natural gas buffer tank, a natural gas adsorption tower, a raw material gas buffer tank, and a fuel gas buffer tank. The outlet of the natural gas buffer tank is connected to the inlet of the natural gas adsorption tower via a third pipeline. The outlet of the natural gas adsorption tower is connected to the raw material gas buffer tank via a first pipeline, on which a first programmable valve is installed. The first pipeline is connected to the fuel gas buffer tank via a second pipeline, on which a second programmable valve is installed. First, second, and third valves are sequentially installed on the first, second, and third pipelines. A pressure sensor is installed in the fuel gas buffer tank, electrically connected to the first, second, and third valves. When the pressure inside the fuel gas buffer tank is detected to be ≥0.15MPa, the first, second, and third valves are closed. This device has a simple structure, low modification cost, and can prevent high-pressure raw material gas from entering low-pressure fuel gas, ensuring production safety.

[0004] The aforementioned low-temperature purification device for natural gas production allows natural gas to pass through the alumina molecular sieve layer of the natural gas adsorption tower from bottom to top. This causes the water mixed in with the natural gas to collect at the bottom of the molecular sieve layer and drip down to the bottom of the natural gas absorption tower under gravity, thus improving the service life of the molecular sieve layer. However, the device does not use a multi-stage throttling and gas-liquid separation method with a throttling valve and gas-liquid separator for purification. Instead, it simply filters the gas through the sieve layer. This method can only filter some solid particles and cannot handle impurities in the air, resulting in poor performance during use. Improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a low-temperature purification device for natural gas production, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-temperature purification device for natural gas production, comprising a base, a stabilizing mechanism on the top of the base, a high-pressure buffer tank on the left side of the top of the base, a gas-liquid separator in the middle of the top of the base, and a cold purification mechanism on the side of the high-pressure buffer tank.

[0007] The cold purification mechanism includes a processing pipe, a throttle valve, a diversion pipe, a top U-shaped frame, a temperature sensor, a connecting arc plate, a connecting block, a placement plate, cooling equipment, and a cooling circulation pipe. The processing pipe is fixedly connected to the right side of the high-pressure buffer tank. The throttle valve is fixedly connected to the surface of the processing pipe. The diversion pipe is fixedly connected to the top of the throttle valve. The top U-shaped frame is fixedly connected to the surface of the throttle valve. The temperature sensor extends through the interior of the top U-shaped frame and is connected to the top of the diversion pipe. The connecting arc plate is fixedly connected to the side of the temperature sensor. The end of the connecting arc plate away from the left side of the temperature sensor is fixedly connected to the right side of the high-pressure buffer tank. The connecting block is fixedly connected to the bottom of the connecting arc plate. The placement plate is fixedly connected to both sides of the surface of the diversion pipe. The cooling equipment is fixedly connected to the right side of the placement plate. The cooling circulation pipe is fixedly connected to the interior of the placement plate. The left side of the cooling circulation pipe is fixedly connected to the bottom right side of the high-pressure buffer tank.

[0008] Preferably, the stabilizing mechanism includes a base plate, a guardrail, a back-end positioning plate, a connecting rod, and a fixing component. The base plate is fixedly connected to the top of the base, the guardrail is fixedly connected to both sides of the top of the base plate, the back-end positioning plate is fixedly connected to the middle of the back of the guardrail, the connecting rod is fixedly connected to the inside of the back-end positioning plate, the fixing component is fixedly connected to the top of the base plate, the fixing component is connected to the surface of the connecting rod, and the back-end positioning plate is attached to the front of the gas-liquid separator.

[0009] Preferably, the stabilizing mechanism is provided in three sets, with two sets of the stabilizing mechanism connected to the top back of the base and one set of the stabilizing mechanism connected to the top front center of the base.

[0010] Preferably, the inner diameter of the back end positioning plate is adapted to the diameter of the high-pressure buffer tank, and the back end positioning plate is attached to the back of the high-pressure buffer tank.

[0011] Preferably, the placement plate has a through hole inside, and the diameter of the through hole is adapted to the diameter of the cooling circulation pipe.

[0012] Preferably, a circulating pump body is fixedly connected to the left side of the cooling device, and the cooling circulation pipe is fixedly connected to the left side of the circulating pump body. The circulating pump body enables the coolant in the cooling circulation pipe to circulate, forming a stable cooling structure and ensuring the normal use of the device.

[0013] Preferably, the top of the top U-shaped frame is provided with a through groove, the diameter of which is adapted to the diameter of the temperature sensor. The through groove allows the temperature sensor to extend into it and monitor the internal temperature to ensure that the conditions for low-temperature purification are met. The temperature sensor is a Zhongruineng PT100 temperature sensor.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This low-temperature purification device for natural gas production, by setting up a cold purification mechanism, enables natural gas to achieve the required purification effect after undergoing multi-stage throttling and gas-liquid separation processes. It does not simply filter the gas through a sieve layer, but can effectively treat impurities in the air, resulting in good performance during use. Furthermore, a placement plate is set on the surface to house cooling equipment and cooling circulation pipes, which can further help to cool down and achieve better low-temperature purification results.

[0016] 2. This cryogenic purification device for natural gas production is equipped with a stabilizing mechanism. The stabilizing mechanism at the top of the base is used to support and stabilize the high-pressure buffer tank and two sets of gas-liquid separators installed at the top, which helps to stabilize the internal reaction process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the stabilizing mechanism of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the cold purification mechanism of this utility model;

[0020] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Base; 2. Stabilizing mechanism; 201. Base plate; 202. Guardrail; 203. Back end positioning plate; 204. Connecting rod; 205. Fixing component; 3. High-pressure buffer tank; 4. Gas-liquid separator; 5. Cold purification mechanism; 501. Processing pipe fittings; 502. Throttling valve; 503. Diversion pipe; 504. Top U-shaped frame; 505. Temperature sensor; 506. Connecting arc plate; 507. Connecting block; 508. Placement plate; 509. Cooling equipment; 510. Cooling circulation pipe. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 The present invention provides the following technical solution:

[0024] A cryogenic purification device for natural gas production includes a base 1, a stabilizing mechanism 2 on the top of the base 1, a high-pressure buffer tank 3 on the top left side of the base 1, a gas-liquid separator 4 in the middle of the top of the base 1, and a cold purification mechanism 5 on the side of the high-pressure buffer tank 3.

[0025] The cold purification mechanism 5 includes a processing pipe 501, a throttle valve 502, a diversion pipe 503, a top U-shaped frame 504, a temperature sensor 505, a connecting arc plate 506, a connecting block 507, a placement plate 508, a cooling device 509, and a cooling circulation pipe 510. The processing pipe 501 is fixedly connected to the right side of the high-pressure buffer tank 3. The throttle valve 502 is fixedly connected to the surface of the processing pipe 501. The diversion pipe 503 is fixedly connected to the top of the throttle valve 502. The top U-shaped frame 504 is fixedly connected to the surface of the throttle valve 502. The temperature sensor 505 extends through the interior of the top U-shaped frame 504 and connects to the top of the diversion pipe 503. The connecting arc plate 506 is fixedly connected to the side of the temperature sensor 505. The end of the connecting arc plate 506 away from the left side of the temperature sensor 505 is fixedly connected to the right side of the high-pressure buffer tank 3. The connecting block 507 is fixedly connected to the bottom of the connecting arc plate 506. The placement plate 508 is fixedly connected to the bottom of the connecting arc plate 506. The cooling device 509 is fixedly connected to the right side of the placement plate 508, and the cooling circulation pipe 510 is fixedly connected to the inside of the placement plate 508. The left side of the cooling circulation pipe 510 is fixedly connected to the bottom right side of the high-pressure buffer tank 3. The top of the top U-shaped frame 504 has a through groove, the diameter of which is adapted to the diameter of the temperature sensor 505. The through groove allows the temperature sensor 505 to extend into the plate to monitor the internal temperature and ensure that the conditions for low-temperature purification are met. The temperature sensor 505 is a Zhongrui Energy PT100 temperature sensor. The inside of the placement plate 508 has a through hole, the diameter of which is adapted to the diameter of the cooling circulation pipe 510. The left side of the cooling device 509 is fixedly connected to a circulation pump body, and the cooling circulation pipe 510 is fixedly connected to the left side of the circulation pump body. The circulation pump body allows the coolant in the cooling circulation pipe 510 to circulate, forming a stable cooling structure and ensuring the normal operation of the device.

[0026] The stabilizing mechanism 2 includes a base plate 201, a guardrail 202, a back-end positioning plate 203, a connecting rod 204, and a fixing member 205. The base plate 201 is fixedly connected to the top of the base 1. The guardrail 202 is fixedly connected to both sides of the top of the base plate 201. The back-end positioning plate 203 is fixedly connected to the middle of the back of the guardrail 202. The connecting rod 204 is fixedly connected to the inside of the back-end positioning plate 203. The fixing member 205 is fixedly connected to the top of the base plate 201 and to the surface of the connecting rod 204. The back-end positioning plate 203 is attached to the front of the gas-liquid separator 4. The stabilizing mechanism 2 is provided in three sets. Two sets of stabilizing mechanisms 2 are connected to the top back of the base 1, and one set of stabilizing mechanisms 2 is connected to the center of the top front of the base 1. The inner diameter of the back-end positioning plate 203 is adapted to the diameter of the high-pressure buffer tank 3, and the back-end positioning plate 203 is attached to the back of the high-pressure buffer tank 3.

[0027] In use, the stabilizing mechanism 2 on the top of the base 1 is used to support and stabilize the high-pressure buffer tank 3 and the two sets of gas-liquid separators 4. The high-pressure buffer tank 3 and the gas-liquid separators 4 are fixedly installed on the top of the base 1. The back of the high-pressure buffer tank 3 and the gas-liquid separators 4 can be attached to the back end positioning plate 203 near the end of the gas-liquid separator, providing support on one side. This helps stabilize the internal reaction. A cold purification mechanism 5 is set on the right side of the high-pressure buffer tank 3. Natural gas first enters a high-pressure buffer tank 3, where it is pressurized to a higher pressure by an internal high-pressure pump. Then, the natural gas enters the processing pipe 501 in sequence and passes through multiple internal throttling valves. 502 performs throttling expansion. With each throttling valve, the pressure and temperature of the natural gas decrease, achieving refrigeration through the Joule-Thomson effect. A gas-liquid separator 4 is connected after the throttling valve. Due to the temperature drop, some high-boiling-point impurities in the natural gas will condense into liquid and be separated and discharged in the gas-liquid separator. After undergoing multiple throttling and gas-liquid separation processes, the natural gas can achieve the required purification effect. It is not just a matter of filtering the gas through a sieve layer, but can effectively treat impurities in the air. It has good performance during use, and a placement plate 508 is set on the surface to house the cooling equipment 509 and the cooling circulation pipe 510, which can further help to cool down and achieve better low-temperature purification effect.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cryogenic purification device for natural gas production, comprising a base (1), characterized in that: The base (1) is provided with a stabilizing mechanism (2) at the top, a high-pressure buffer tank (3) is provided on the left side of the top of the base (1), a gas-liquid separator (4) is provided in the middle of the top of the base (1), and a cold purification mechanism (5) is provided on the side of the high-pressure buffer tank (3). The cold purification mechanism (5) includes a processing pipe (501), a throttle valve (502), a diversion pipe (503), a top U-shaped frame (504), a temperature sensor (505), a connecting arc plate (506), a connecting block (507), a placement plate (508), a cooling device (509), and a cooling circulation pipe (510). The processing pipe (501) is fixedly connected to the right side of the high-pressure buffer tank (3). The throttle valve (502) is fixedly connected to the surface of the processing pipe (501). The diversion pipe (503) is fixedly connected to the top of the throttle valve (502). The top U-shaped frame (504) is fixedly connected to the surface of the throttle valve (502). The temperature sensor (505) penetrates the top U-shaped frame (509). 4) The internal extension is connected to the top of the diversion pipe (503). The connecting arc plate (506) is fixedly connected to the side of the temperature sensor (505). The end of the connecting arc plate (506) away from the left side of the temperature sensor (505) is fixedly connected to the right side of the high pressure buffer tank (3). The connecting block (507) is fixedly connected to the bottom of the connecting arc plate (506). The placement plate (508) is fixedly connected to both sides of the surface of the diversion pipe (503). The cooling device (509) is fixedly connected to the right side of the placement plate (508). The cooling circulation pipe (510) is fixedly connected to the inside of the placement plate (508). The left side of the cooling circulation pipe (510) is fixedly connected to the bottom right side of the high pressure buffer tank (3).

2. The cryogenic purification apparatus for natural gas production according to claim 1, characterized in that: The stabilizing mechanism (2) includes a base plate (201), a guardrail (202), a back-end positioning plate (203), a connecting rod (204), and a fixing member (205). The base plate (201) is fixedly connected to the top of the base (1). The guardrail (202) is fixedly connected to both sides of the top of the base plate (201). The back-end positioning plate (203) is fixedly connected to the middle of the back of the guardrail (202). The connecting rod (204) is fixedly connected to the inside of the back-end positioning plate (203). The fixing member (205) is fixedly connected to the top of the base plate (201) and to the surface of the connecting rod (204). The back-end positioning plate (203) is attached to the front of the gas-liquid separator (4).

3. The cryogenic purification apparatus for natural gas production according to claim 2, characterized in that: The stabilizing mechanism (2) is provided in three sets. Two sets of the stabilizing mechanism (2) are connected to the top back of the base (1), and one set of the stabilizing mechanism (2) is connected to the top front center of the base (1).

4. A cryogenic purification apparatus for natural gas production according to claim 2, characterized in that: The inner diameter of the back end positioning plate (203) is adapted to the diameter of the high pressure buffer tank (3), and the back end positioning plate (203) is attached to the back of the high pressure buffer tank (3).

5. A cryogenic purification apparatus for natural gas production according to claim 1, characterized in that: The placement plate (508) has a through hole inside, the diameter of which is adapted to the diameter of the cooling circulation pipe (510).

6. A cryogenic purification apparatus for natural gas production according to claim 1, characterized in that: A circulating pump body is fixedly connected to the left side of the cooling device (509), and the cooling circulating pipe (510) is fixedly connected to the left side of the circulating pump body.

7. A cryogenic purification apparatus for natural gas production according to claim 1, characterized in that: The top of the top U-shaped frame (504) has a through groove, the diameter of which is adapted to the diameter of the temperature sensor (505).

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