CN216484178U - Water gas sampling system - Google Patents
Water gas sampling system Download PDFInfo
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- CN216484178U CN216484178U CN202122671571.6U CN202122671571U CN216484178U CN 216484178 U CN216484178 U CN 216484178U CN 202122671571 U CN202122671571 U CN 202122671571U CN 216484178 U CN216484178 U CN 216484178U
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Abstract
The utility model provides a water gas sampling system, comprising: the system comprises a gas cooler, a water-vapor separator, a vent branch pipeline, a main vent pipeline, a trench, a pouring pipeline and a liquid seal tank; the water gas sampling port of each gasification furnace is connected to the cold source inlet of the gas cooler, and the cold source outlet of the gas cooler is connected to the gas inlet of the water-gas separator. Because the water gas is gas with more high-temperature and high-pressure mixed water, a representative water-medium gas sample of the gasification furnace can be sampled by additionally arranging a gas cooler and then arranging a water-gas separator, and the advantages of safe sampling operation are realized by arranging related emptying pipelines, ditches and the like.
Description
Technical Field
The utility model relates to a sampling system, in particular to a water gas sampling system.
Background
The coal-based methanol preparation method comprises three gasification furnaces A/B/C, one gasification furnace is used for preparing two gasification furnaces, water gas is generated by gasification reaction, and the water gas is treated by a purification device and then sent to a methanol synthesis device to produce methanol for sale. The water gas is used as main synthetic gas of the gasification furnace, and the effective gas component is the key index of the water gas.
In the prior art, the water gas is a gas with more high-temperature and high-pressure mixed water, so the water gas components cannot be sampled and analyzed by a gas analyzer.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a water gas sampling system which can effectively solve the problems.
The technical scheme adopted by the utility model is as follows:
the utility model provides a water gas sampling system, comprising: the system comprises a gas cooler (1), a water-vapor separator (2), a emptying branch pipeline (3), a total emptying pipeline (4), a trench (5), a pouring pipeline (6) and a liquid seal tank (7);
the water gas sampling port of each gasification furnace is connected to the cold source inlet of the gas cooler (1) through a first water gas conveying pipeline (L1), and the cold source outlet of the gas cooler (1) is connected to the gas inlet of the water-gas separator (2) through a second water gas conveying pipeline (L2); wherein the second water gas transfer line (L2) is provided with a first control valve (C1); a wire mesh filler (2-1) is arranged in the water-vapor separator (2); the air inlet of the water-vapor separator (2) is positioned below the wire mesh packing (2-1); the exhaust port of the water-vapor separator (2) is positioned above the wire mesh packing (2-1); the exhaust port of the water-steam separator (2) is provided with a second control valve (C2), and one exhaust end of the second control valve (C2) is connected to a water gas analysis instrument; the other exhaust end of the second control valve (C2) is communicated to the main emptying pipeline (4) through an emptying branch pipeline (3);
wherein: the bottom liquid outlet of the gas cooler (1) and the bottom liquid outlet of the water-vapor separator (2) are connected to the trench (5); wherein a third control valve (C3) is arranged on a pipeline between a bottom liquid outlet of the water-vapor separator (2) and the trench (5); a liquid seal groove (7) is dug at one end of the trench (5), one end of the trench (5) is communicated with a pouring pipeline (6), and the pouring pipeline (6) is positioned in the liquid seal groove (7); the trench (5) is communicated with the main emptying pipeline (4); and the main emptying pipeline (4) is provided with a fourth control valve (C4).
Preferably, the first control valve (C1), the third control valve (C3), and the fourth control valve (C4) are DN40 ball valves.
Preferably, the second control valve (C2) is a three-way control valve.
The water gas sampling system provided by the utility model has the following advantages:
because the water gas is gas with more high-temperature and high-pressure mixed water, a representative water-medium gas sample of the gasification furnace can be sampled by additionally arranging a gas cooler and then arranging a water-gas separator, and the advantages of safe sampling operation are realized by arranging related emptying pipelines, ditches and the like.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a water gas sampling system provided by the present invention;
FIG. 2 is a detailed block diagram of a water gas sampling system provided by the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
With reference to fig. 1 and 2, the present invention provides a water gas sampling system comprising: the system comprises a gas cooler 1, a water-vapor separator 2, a vent branch pipeline 3, a main vent pipeline 4, a trench 5, a pouring pipeline 6 and a liquid seal tank 7;
the water gas sampling port of each gasification furnace is connected to the cold source inlet of the gas cooler 1 through a first water gas conveying pipeline L1, and the cold source outlet of the gas cooler 1 is connected to the gas inlet of the water-gas separator 2 through a second water gas conveying pipeline L2; wherein the second water gas transfer line L2 is provided with a first control valve C1; a wire mesh filler 2-1 is arranged in the water-steam separator 2; the air inlet of the water-vapor separator 2 is positioned below the wire mesh filler 2-1; the exhaust port of the water-vapor separator 2 is positioned above the wire mesh packing 2-1; the exhaust port of the water-steam separator 2 is provided with a second control valve C2, and one exhaust end of the second control valve C2 is connected to a water-gas analysis instrument; the other exhaust end of the second control valve C2 is communicated to a main emptying pipeline 4 through an emptying branch pipeline 3;
wherein: the bottom liquid outlet of the gas cooler 1 and the bottom liquid outlet of the water-vapor separator 2 are both connected to a trench 5; wherein, a third control valve C3 is arranged on a pipeline between a bottom liquid outlet of the water-vapor separator 2 and the trench 5; a liquid seal groove 7 is dug at one end of the trench 5, one end of the trench 5 is communicated with a pouring pipeline 6, and the pouring pipeline 6 is positioned in the liquid seal groove 7; the trench 5 is communicated with the main emptying pipeline 4; the main vent line 4 is fitted with a fourth control valve C4.
Wherein the first control valve C1, the third control valve C3 and the fourth control valve C4 are DN40 ball valves. The second control valve C2 is a three-way control valve.
Therefore, when three gasification furnaces are available, three emptying pipelines are arranged behind the tank of each water-vapor separator and are introduced into a main emptying pipeline together, and the main emptying pipeline is made of 304. The application can realize independent sampling of water gas of each gasification furnace and realize independent analysis of the operation condition of each gasification furnace.
The utility model provides a water gas sampling system which can sample in the following modes:
the first control valve C1 is kept long open, the second control valve C2 and the fourth control valve C4 are closed, the circulating water of the gas cooler 1 is long open, the second control valve C2 is slightly opened during sampling, the air is discharged until the temperature of a synthetic gas pipeline in front of the gas cooler 1 is increased to be greater than 100 ℃, the time lasts for 5min, the temperature of the gas cooler 1 is confirmed to be normal and less than 50 ℃, and the second control valve C2 is turned to sample. After the sampling is finished, the second control valve C2 is opened to the off position.
Therefore, during sampling, the water gas with relatively large amount of high-temperature and high-pressure mixed water generated from the gasification furnace is firstly cooled by the gas cooler 1, and the temperature is reduced from 160 ℃ to about 40 ℃; then, the cooled water gas enters a water-gas separator 2 for gas-liquid separation, and the water gas with water removed is obtained under the action of a wire mesh filler 2-1; and finally, the water gas meeting the analysis conditions of the analyzer enters the analyzer through a second control valve C2 for analysis operation.
And (3) blowdown operation:
depending on the amount of condensate, the frequency can be increased:
closing the first control valve C1, slowly opening the second control valve C2 for emptying, opening the third control valve C3 and the fourth control valve C4 for draining liquid when the water-vapor separator 2 is not pressure-free, closing the second control valve C2, the third control valve C3 and the fourth control valve C4 when no liquid overflows in the water-vapor separator 2, and slowly opening the first control valve C1 for punching the water-vapor separator 2 and recovering to a sampling state.
In the application, since the water gas is high-pressure gas, when the third control valve C3 is opened to drain liquid, the impact force on the trench 5 is high, which may cause the water in the trench 5 to splash, so on one hand, the total emptying pipeline 4 is arranged, and the fourth control valve C4 is opened, thereby realizing the pressure release effect on the trench 5; on the other hand, by arranging the inverted spraying pipeline 6 with the liquid seal groove 7, the water in the trench 5 plays a role of buffering through the inverted spraying pipeline 6 and then flows to play a role of pressure relief.
A parking state:
when the system is stopped, the sampling pipeline and the water-vapor separator are decompressed, and all valves of the set of sampling equipment are closed for isolation after the sampling pipeline and the water-vapor separator are replaced to be qualified.
The utility model provides a water gas sampling system, which is additionally provided with a water gas separator, a gas cooler and the like according to the gas sampling condition after the aspects of equipment use, arrangement, specification and the like are considered. Calculating the contents of pipeline pressure drop of a pipeline led out from the gasification furnace, the gas capacity of a pipeline conveying device under the corresponding pipe diameter and the like; and determining the pipeline leading-out position, pipeline direction arrangement, air source distribution and the like after the on-site exploration. In order to ensure the sampling safety, an emptying pipe is additionally arranged, and a sampling valve is arranged to be a three-way valve.
The utility model provides a water gas sampling system, which has the following advantages:
because the water gas is gas with more high-temperature and high-pressure mixed water, a representative water-medium gas sample of the gasification furnace can be sampled by additionally arranging a gas cooler and then arranging a water-gas separator, and the advantages of safe sampling operation are realized by arranging related emptying pipelines, ditches and the like.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements should also be considered within the scope of the present invention.
Claims (3)
1. A water gas sampling system, comprising: the system comprises a gas cooler (1), a water-vapor separator (2), a emptying branch pipeline (3), a total emptying pipeline (4), a trench (5), a pouring pipeline (6) and a liquid seal tank (7);
the water gas sampling port of each gasification furnace is connected to the cold source inlet of the gas cooler (1) through a first water gas conveying pipeline (L1), and the cold source outlet of the gas cooler (1) is connected to the gas inlet of the water-gas separator (2) through a second water gas conveying pipeline (L2); wherein the second water gas transfer line (L2) is fitted with a first control valve (C1); a wire mesh filler (2-1) is arranged in the water-vapor separator (2); the air inlet of the water-vapor separator (2) is positioned below the wire mesh packing (2-1); the exhaust port of the water-vapor separator (2) is positioned above the wire mesh packing (2-1); the exhaust port of the water-steam separator (2) is provided with a second control valve (C2), and one exhaust end of the second control valve (C2) is connected to a water gas analysis instrument; the other exhaust end of the second control valve (C2) is communicated to the main emptying pipeline (4) through an emptying branch pipeline (3);
wherein: the bottom liquid outlet of the gas cooler (1) and the bottom liquid outlet of the water-vapor separator (2) are connected to the trench (5); wherein a third control valve (C3) is arranged on a pipeline between a bottom liquid outlet of the water-vapor separator (2) and the trench (5); a liquid seal groove (7) is dug at one end of the trench (5), one end of the trench (5) is communicated with a pouring pipeline (6), and the pouring pipeline (6) is positioned in the liquid seal groove (7); the trench (5) is communicated with the main emptying pipeline (4); and the main emptying pipeline (4) is provided with a fourth control valve (C4).
2. The water gas sampling system according to claim 1, wherein the first control valve (C1), the third control valve (C3), and the fourth control valve (C4) are DN40 ball valves.
3. The water gas sampling system according to claim 1, wherein the second control valve (C2) is a three-way control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671571.6U CN216484178U (en) | 2021-11-03 | 2021-11-03 | Water gas sampling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122671571.6U CN216484178U (en) | 2021-11-03 | 2021-11-03 | Water gas sampling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216484178U true CN216484178U (en) | 2022-05-10 |
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ID=81446289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122671571.6U Active CN216484178U (en) | 2021-11-03 | 2021-11-03 | Water gas sampling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216484178U (en) |
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2021
- 2021-11-03 CN CN202122671571.6U patent/CN216484178U/en active Active
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