CN216170021U - Crude methanol flash evaporation gas recovery device - Google Patents
Crude methanol flash evaporation gas recovery device Download PDFInfo
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- CN216170021U CN216170021U CN202122467580.3U CN202122467580U CN216170021U CN 216170021 U CN216170021 U CN 216170021U CN 202122467580 U CN202122467580 U CN 202122467580U CN 216170021 U CN216170021 U CN 216170021U
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Abstract
The utility model discloses a crude methanol flash evaporation gas recovery device which comprises a methanol separator, a gas-liquid separator, a flash evaporation gas-methanol recovery tower and a methanol rectifying tower, wherein the input end of the methanol separator is connected with a raw material pipeline, a gas phase outlet and a liquid phase outlet of the methanol separator are both connected to a crude methanol discharge tank through pipelines, and a gas phase outlet of the gas-liquid separator is connected to the lower part of the flash evaporation gas-methanol recovery tower through a pipeline. This crude methyl alcohol flash distillation gas recovery unit washes processing through setting up flash distillation vapour methyl alcohol recovery tower to flash distillation vapour, retrieves to fuel gas pipe network or torch pipe network with flash distillation vapour, can carry the liquid phase product that produces in the processing procedure once more in the methyl alcohol separator and carry out the circulation through setting up the circulation pipeline and handle, this crude methyl alcohol flash distillation gas recovery unit greatly reduced methanol content in the gaseous phase, improve follow-up rectification treatment efficiency, and process flow is simple, effectively improves economic efficiency, reduces the production investment, has eliminated the serious potential safety hazard.
Description
The technical field is as follows:
the utility model relates to the technical field of crude methanol flash evaporation gas recovery, in particular to a crude methanol flash evaporation gas recovery device.
Background art:
the process of reducing the pressure of methanol from a methanol separator to a methanol flash tank in the methanol synthesis device is a physical process from high pressure to low pressure, the solubility of gas is reduced after pressure reduction, and a large amount of gas is flashed out.
And the flash steam discharged after being washed by the crude methanol discharge tank is not subjected to liquid separation treatment by gas-liquid separation equipment, so that the defects of methanol loss and liquid carrying of a fuel gas pipeline are caused, and aiming at the defects of the prior art, a crude methanol flash steam recovery device is designed at present.
The utility model has the following contents:
the utility model aims to provide a crude methanol flash gas recovery device, which aims to solve the problems that flash gas formed in the existing methanol synthesis process is not subjected to liquid separation treatment by a gas-liquid separation device, so that methanol loss and liquid carrying of a fuel gas pipeline are caused in the background art.
The utility model is implemented by the following technical scheme: a crude methanol flash evaporation gas recovery device comprises a methanol separator, a gas-liquid separator, a flash evaporation gas methanol recovery tower and a methanol rectifying tower, the input of methyl alcohol separator is connected with the raw materials pipeline, be equipped with the raw materials valve on the raw materials pipeline, the gaseous phase export and the liquid phase export of methyl alcohol separator all through pipe connection to thick methyl alcohol discharge tank, gas-liquid separator's gaseous phase export is through pipe connection to the lower part of flash distillation vapour methyl alcohol recovery tower, the gaseous phase exit linkage of flash distillation vapour methyl alcohol recovery tower has the recovery pipeline, it has fuel gas pipe network and torch pipe network to retrieve the pipe connection, the input of methyl alcohol rectifying column is connected with the finished product pipeline, the finished product pipeline is through circulating line connection to the raw materials pipeline, the liquid phase export of thick methyl alcohol discharge tank, gas-liquid separator's liquid phase export, the liquid phase export of flash distillation vapour methyl alcohol recovery tower is connected with first fortune material pipeline respectively, second fortune material pipeline and third fortune material pipeline.
Preferably, the gas phase outlet of the crude methanol discharge tank is connected to the input end of the gas-liquid separator through a pipeline.
Preferably, a high-efficiency demisting device is arranged in the upper part of the flash evaporation steam methanol recovery tower, and a desalted water device is arranged in the lower part of the flash evaporation steam methanol recovery tower.
Preferably, the fuel gas pipe network and the flare pipe network are both provided with a first one-way valve.
Preferably, the first material conveying pipeline, the second material conveying pipeline and the third material conveying pipeline are all connected to a finished product pipeline.
Preferably, the first material conveying pipeline, the second material conveying pipeline, the third material conveying pipeline, the finished product pipeline and the circulating pipeline are all provided with second one-way valves.
The utility model has the advantages that: this crude methyl alcohol flash distillation gas recovery unit washes processing through setting up flash distillation vapour methyl alcohol recovery tower to flash distillation vapour, retrieve the flash distillation vapour to fuel gas pipe network or torch pipe network, can carry the liquid phase product that produces in the processing procedure once more in the methyl alcohol separator and carry out circulation treatment through setting up the circulation pipeline, this crude methyl alcohol flash distillation gas recovery unit greatly reduced methanol content in the gaseous phase, improve follow-up rectification treatment efficiency, and avoided the drawback of fuel gas pipeline area liquid, whole process flow is simple, effectively improve economic efficiency, reduce the production investment, the serious potential safety hazard has been eliminated.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a crude methanol flash evaporation gas recovery device according to the present invention;
FIG. 2 is a schematic structural diagram of a flash evaporation methanol recovery tower of the crude methanol flash evaporation gas recovery device.
In the figure: 1. the methanol recovery device comprises a methanol separator, 2, a raw material pipeline, 3, a raw material valve, 4, a crude methanol discharge tank, 5, a gas-liquid separator, 6, a flash steam methanol recovery tower, 7, a high-efficiency demisting device, 8, a desalted water device, 9, a recovery pipeline, 10, a fuel gas pipe network, 11, a torch pipe network, 12, a first one-way valve, 13, a methanol rectification tower, 14, a finished product pipeline, 15, a circulation pipeline, 16, a first material transportation pipeline, 17, a second material transportation pipeline, 18, a third material transportation pipeline, 19 and a second one-way valve.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a crude methanol flash evaporation gas recovery device comprises a methanol separator 1, a gas-liquid separator 5, a flash evaporation gas-methanol recovery tower 6 and a methanol rectifying tower 13, wherein the input end of the methanol separator 1 is connected with a raw material pipeline 2, a raw material valve 3 is arranged on the raw material pipeline 2, a gas phase outlet and a liquid phase outlet of the methanol separator 1 are both connected to a crude methanol discharge tank 4 through pipelines, a gas phase outlet of the crude methanol discharge tank 4 is connected to the input end of the gas-liquid separator 5 through a pipeline, thus flash evaporation gas generated in the crude methanol discharge tank 4 is conveyed into the gas-liquid separator 5, gas phase and liquid phase separation treatment is carried out through the gas-liquid separator 5, a gas phase outlet of the gas-liquid separator 5 is connected to the lower part of the flash evaporation gas-methanol recovery tower 6 through a pipeline, a high-efficiency demisting device 7 is arranged in the upper part of the flash evaporation gas-methanol recovery tower 6, a desalted water device 8 is arranged in the lower part of the flash evaporation gas-methanol recovery tower 6, methanol flash steam enters the lower part of a flash steam methanol recovery tower 6 and is washed in the flash steam methanol recovery tower 6 through a desalted water device 8 so as to reduce the methanol content in the flash steam, the washed flash steam is separated through a high-efficiency demisting device 7 at the top of the tower and then discharged, so that the product discharged from the flash steam methanol recovery tower 6 is only divided into a gas phase state and a liquid phase state, the processing procedure is simplified, a gas phase outlet of the flash steam methanol recovery tower 6 is connected with a recovery pipeline 9, the recovery pipeline 9 is connected with a fuel gas pipe network 10 and a torch pipe network 11, the fuel gas pipe network 10 and the torch pipe network 11 are both provided with a first one-way valve 12, the processed flash steam can be conveyed into the fuel gas pipe network 10 to be used as fuel through the action of the first one-way valve 12, the flash steam can also be conveyed into the torch pipe network 11 to be combusted, the input end of a methanol rectification tower 13 is connected with a finished product pipe network 14, the finished product pipeline 14 is connected to the raw material pipeline 2 through a circulating pipeline 15, a liquid phase outlet of the crude methanol discharge tank 4, a liquid phase outlet of the gas-liquid separator 5 and a liquid phase outlet of the flash steam methanol recovery tower 6 are respectively connected with a first material conveying pipeline 16, a second material conveying pipeline 17 and a third material conveying pipeline 18, the first material conveying pipeline 16, the second material conveying pipeline 17 and the third material conveying pipeline 18 are all connected to the finished product pipeline 14, the first material conveying pipeline 16, the second material conveying pipeline 17, the third material conveying pipeline 18, the finished product pipeline 14 and the circulating pipeline 15 are all provided with a second one-way valve 19, liquid phase products generated in the processing procedure can be conveyed into the methanol separator 1 again through the circulating pipeline 15 for separation processing, the processing efficiency is improved, and the second one-way valve 19 can avoid the problem of liquid backflow in the corresponding pipelines, and the safety is improved.
The working principle is as follows: when the crude methanol flash steam recovery device is used, firstly, raw materials are conveyed into a methanol separator 1 through a raw material pipeline 2, the raw materials are conveyed into a crude methanol discharge tank 4 after being processed by the methanol separator 1, a gas-phase outlet of the crude methanol discharge tank 4 is conveyed into a gas-liquid separator 5, gas-phase and liquid-phase separation processing is carried out through the gas-liquid separator 5, a gas-phase product of the gas-liquid separator 5 is conveyed into a flash steam methanol recovery tower 6, the flash steam methanol recovery tower 6 is washed through a desalination device 8 so as to reduce the methanol content in flash steam, the washed flash steam is separated by a high-efficiency demisting device 7 at the top of the tower and then discharged into a recovery pipeline 9, the flash steam processed in the recovery pipeline 9 can be conveyed into a fuel gas pipeline network 10 to be used as fuel by controlling a first one-way valve 12, and the flash steam can also be conveyed into a torch pipeline network 11 to be combusted, liquid phase products of the first material conveying pipeline 16, the second material conveying pipeline 17 and the third material conveying pipeline 18 are all conveyed to the finished product pipeline 14, the liquid phase products can be directly conveyed into the methanol rectifying tower 13 through the finished product pipeline 14 by controlling the second one-way valves 19 of each group, and the liquid phase products can also be conveyed into the methanol separator 1 again through the circulating pipeline 15 for separation treatment, so that the treatment efficiency is improved, and the use process of the crude methanol flash evaporation gas recovery device is realized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a crude methyl alcohol flash distillation gas recovery unit, includes methyl alcohol separator (1), vapour and liquid separator (5), flash distillation vapour methyl alcohol recovery tower (6) and methyl alcohol rectifying column (13), the input of methyl alcohol separator (1) is connected with raw materials pipeline (2), its characterized in that: the device is characterized in that a raw material valve (3) is arranged on the raw material pipeline (2), a gas phase outlet and a liquid phase outlet of the methanol separator (1) are connected to a crude methanol discharge tank (4) through pipelines, a gas phase outlet of the gas-liquid separator (5) is connected to the lower part of the flash steam methanol recovery tower (6) through pipelines, a gas phase outlet of the flash steam methanol recovery tower (6) is connected with a recovery pipeline (9), the recovery pipeline (9) is connected with a fuel gas pipe network (10) and a torch pipe network (11), the input end of the methanol rectification tower (13) is connected with a finished product pipeline (14), the finished product pipeline (14) is connected to the raw material pipeline (2) through a circulating pipeline (15), a liquid phase outlet of the crude methanol discharge tank (4), a liquid phase outlet of the gas-liquid separator (5) and a liquid phase outlet of the flash steam methanol recovery tower (6) are respectively connected with a first material conveying pipeline (16), a second material conveying pipeline (17) and a third material conveying pipeline (18).
2. The crude methanol flash gas recovery device according to claim 1, wherein: and a gas phase outlet of the crude methanol discharge tank (4) is connected to an input end of the gas-liquid separator (5) through a pipeline.
3. The crude methanol flash gas recovery device according to claim 1, wherein: the efficient demisting device (7) is arranged in the upper part of the flash evaporation steam methanol recovery tower (6), and the desalted water device (8) is arranged in the lower part of the flash evaporation steam methanol recovery tower (6).
4. The crude methanol flash gas recovery device according to claim 1, wherein: the fuel gas pipe network (10) and the torch pipe network (11) are both provided with a first one-way valve (12).
5. The crude methanol flash gas recovery device according to claim 1, wherein: the first conveying pipeline (16), the second conveying pipeline (17) and the third conveying pipeline (18) are all connected to the finished product pipeline (14).
6. The crude methanol flash gas recovery device according to claim 1, wherein: and the first material conveying pipeline (16), the second material conveying pipeline (17), the third material conveying pipeline (18), the finished product pipeline (14) and the circulating pipeline (15) are all provided with second one-way valves (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467580.3U CN216170021U (en) | 2021-10-13 | 2021-10-13 | Crude methanol flash evaporation gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467580.3U CN216170021U (en) | 2021-10-13 | 2021-10-13 | Crude methanol flash evaporation gas recovery device |
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| Publication Number | Publication Date |
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| CN216170021U true CN216170021U (en) | 2022-04-05 |
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| CN202122467580.3U Active CN216170021U (en) | 2021-10-13 | 2021-10-13 | Crude methanol flash evaporation gas recovery device |
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| CN (1) | CN216170021U (en) |
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2021
- 2021-10-13 CN CN202122467580.3U patent/CN216170021U/en active Active
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