CN203568996U - Low-temperature methanol wash, intermediate pressure flash and full-effect recovery device - Google Patents
Low-temperature methanol wash, intermediate pressure flash and full-effect recovery device Download PDFInfo
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- CN203568996U CN203568996U CN201320670979.4U CN201320670979U CN203568996U CN 203568996 U CN203568996 U CN 203568996U CN 201320670979 U CN201320670979 U CN 201320670979U CN 203568996 U CN203568996 U CN 203568996U
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Abstract
The utility model discloses a low-temperature methanol wash, intermediate pressure flash and full-effect recovery device. The device comprises a methanol wash tower, a methanol cooler and an intermediate pressure flash tank which are sequentially connected by pipelines, wherein the intermediate pressure flash tank is connected with a torch and a recycle gas compressor through the pipelines. The low-temperature methanol wash, intermediate pressure flash and full-effect recovery device solves the problem of the existing device that available gas cannot be effectively recovered and utilized and finally wasted.
Description
Technical field
The utility model belongs to coal chemical engineering equipment technical field, relates in a kind of low-temperature rectisol and presses flashed vapour entirely to imitate retrieving arrangement.
Background technology
In methanol synthesizer, the effect of low-temperature rectisol workshop section recycle gas compressor is by the CO being absorbed by methyl alcohol in Methanol Wash Column, H
2after being parsed by step-down in middle pressure flash tank, through compressor, boost and send into recycle in unstripped gas, prevent that the active principle of synthesizing methanol runs off, enhance productivity.At present, substantially all there is flash distillation tolerance and the unmatched problem of compressor in this device, causes effective gas to waste in a large number.
Utility model content
The purpose of this utility model is to provide in a kind of low-temperature rectisol presses flashed vapour entirely to imitate retrieving arrangement, has solved existing apparatus and has effectively been so incensed that a large amount of problems of wasting less than effective recycling.
The technical scheme that the utility model adopts is, in a kind of low-temperature rectisol, press flashed vapour entirely to imitate retrieving arrangement, comprise the Methanol Wash Column, methyl alcohol water cooler and the middle pressure flash tank that by pipeline, connect successively, middle pressure flash tank is connected with recycle gas compressor with torch by pipeline.
Feature of the present utility model is also,
Wherein on the pipeline between methyl alcohol water cooler and middle pressure flash tank, variable valve a is installed, between middle pressure flash tank and torch, variable valve b is installed.
Wherein the two ends of recycle gas compressor, by pipeline communication, are provided with variable valve c on this pipeline, between variable valve c and the pipeline near recycle gas compressor ingress, are provided with a minute process control instrument.
The beneficial effects of the utility model are:
1) the manufacture inflate quantity of recycle gas compressor is slightly larger than theoretical flash distillation tolerance, and not enough tolerance is supplemented by the gas distribution pipeline of setting up, by regulating distribution capacity, to reach the object of zero release;
2) choose approach with middle pressure flashed vapour component, temperature and not with the high pressure gas of liquid as distribution, guarantee the normal operation of compressor;
3) by interlocked control, to guarantee that compressor jumps suddenly in the situation of car, realize interlock protection, prevent super high pressure accident.
Accompanying drawing explanation
Fig. 1 presses flashed vapour entirely to imitate the structural representation of retrieving arrangement in the utility model low-temperature rectisol.
In figure, 1. Methanol Wash Column, 2. methyl alcohol water cooler, presses flash tank in 3., 4. recycle gas compressor, 5. variable valve a, 6. variable valve b, 7. torch, 8. variable valve c.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
The utility model provides in a kind of low-temperature rectisol presses flashed vapour entirely to imitate retrieving arrangement, as shown in Figure 1, comprise the Methanol Wash Column 1, methyl alcohol water cooler 2 and the middle pressure flash tank 3 that by pipeline, connect successively, middle pressure flash tank 3 is connected with recycle gas compressor 4 with torch 7 by pipeline, wherein on the pipeline between methyl alcohol water cooler 2 and middle pressure flash tank 3, variable valve a5 is installed, between middle pressure flash tank 3 and torch 7, variable valve b6 is installed.The two ends of recycle gas compressor 4, by pipeline communication, are provided with variable valve c8 on this pipeline, between variable valve c8 and the pipeline near recycle gas compressor 4 ingress, be provided with a minute process control instrument.
From the reserved opening pipe arrangement of methyl alcohol water cooler 2, draw purified gas to middle pressure flash tank 3 top rich methanol feed pipe vent valves, be used for replenishment cycles airshed and reach compressor design requirement.Consider that when occurred that recycle gas compressor 4 is jumped the situation of car suddenly, distributing valve can not cut out in time, middle pressure flash tank 3 very easily causes high-low pressure to go here and there mutually phenomenon and even damages simultaneously.Therefore, at this pipeline, set up variable valve a5, and increase interlocking, at recycle gas compressor 4, jump suddenly car or temperature out exceed interlocking value in the situation that, realize this valve of interlocking close, prevent super high pressure accident.
At recycle gas compressor 4 entrances, be provided with the Instrument connection situation signal that pressure divides process control, recycle gas compressor 4 is out of service or jump after car, and variable valve a5 is by interlocking close, and remaining gas is unloaded and put to flare system 7 by pressure regulator valve b6.The variable valve c8 that entrance is returned in recycle gas compressor 4 outlet is in operation and does not re-use, in closing condition.
Contrast the existing situation that domestic low-temperature rectisol designs at present and comes into operation, substantially have following several situations:
1) compressor operating is good, but in order to guarantee press inlet pressure, part effectively gas enters flare system, can not all reclaim;
2) compressor design is bigger than normal, and system does not provide enough tolerance, and press cannot normally move, and effectively gas can not reclaim;
3) compressor design is completely near design load, and system loading, system pressure, envrionment temperature all produce considerable influence to compressor operating, and underload or higher load cannot normally be moved, and cause equally the waste of effective gas.
By structure of the present utility model, not only solved system existing issue, also recycle gas compressor in low-temperature rectisol from now on is not mated with flash distillation tolerance or the problem that can not all reclaim provides new mentality of designing.
The utility model has following advantage in actual applications:
1) the manufacture inflate quantity of recycle gas compressor is slightly larger than theoretical flash distillation tolerance, and not enough tolerance is supplemented by the gas distribution pipeline of setting up, by regulating distribution capacity, to reach the object of zero release;
2) choose approach with middle pressure flashed vapour component, temperature and not with the high pressure gas of liquid as distribution, guarantee the normal operation of compressor;
3) by interlocked control, to guarantee that compressor jumps suddenly in the situation of car, realize interlock protection, prevent super high pressure accident.
Claims (3)
1. in a low-temperature rectisol, press flashed vapour entirely to imitate retrieving arrangement, it is characterized in that, comprise the Methanol Wash Column (1), methyl alcohol water cooler (2) and the middle pressure flash tank (3) that by pipeline, connect successively, middle pressure flash tank (3) is connected with recycle gas compressor (4) with torch (7) by pipeline.
2. in low-temperature rectisol according to claim 1, press flashed vapour entirely to imitate retrieving arrangement, it is characterized in that, on pipeline between described methyl alcohol water cooler (2) and middle pressure flash tank (3), variable valve a(5 is installed), between middle pressure flash tank (3) and torch (7), variable valve b(6 is installed).
3. in low-temperature rectisol according to claim 2, press flashed vapour entirely to imitate retrieving arrangement, it is characterized in that, pipeline communication is passed through at the two ends of described recycle gas compressor (4), variable valve c(8 is installed on this pipeline), variable valve c(8) and the pipeline near recycle gas compressor (4) ingress between be provided with a minute process control instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320670979.4U CN203568996U (en) | 2013-10-28 | 2013-10-28 | Low-temperature methanol wash, intermediate pressure flash and full-effect recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320670979.4U CN203568996U (en) | 2013-10-28 | 2013-10-28 | Low-temperature methanol wash, intermediate pressure flash and full-effect recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203568996U true CN203568996U (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320670979.4U Expired - Fee Related CN203568996U (en) | 2013-10-28 | 2013-10-28 | Low-temperature methanol wash, intermediate pressure flash and full-effect recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203568996U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277050A (en) * | 2018-03-10 | 2018-07-13 | 河南晋煤天庆煤化工有限责任公司 | A kind of low-temp methanol washes two sections of flashed vapour recycling systems of flash column |
| CN111013335A (en) * | 2019-12-06 | 2020-04-17 | 大同煤矿集团有限责任公司 | Low-temperature methanol washing transformation process |
| CN111056920A (en) * | 2019-12-17 | 2020-04-24 | 陕西渭河煤化工集团有限责任公司 | Recovery method of volatile gas-phase methanol in methanol storage tank |
-
2013
- 2013-10-28 CN CN201320670979.4U patent/CN203568996U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108277050A (en) * | 2018-03-10 | 2018-07-13 | 河南晋煤天庆煤化工有限责任公司 | A kind of low-temp methanol washes two sections of flashed vapour recycling systems of flash column |
| CN108277050B (en) * | 2018-03-10 | 2023-11-24 | 河南晋控天庆煤化工有限责任公司 | Two-stage flash gas recycling system of low-temperature methanol washing flash tower |
| CN111013335A (en) * | 2019-12-06 | 2020-04-17 | 大同煤矿集团有限责任公司 | Low-temperature methanol washing transformation process |
| CN111013335B (en) * | 2019-12-06 | 2022-05-10 | 晋能控股煤业集团有限公司 | Low-temperature methanol washing transformation process |
| CN111056920A (en) * | 2019-12-17 | 2020-04-24 | 陕西渭河煤化工集团有限责任公司 | Recovery method of volatile gas-phase methanol in methanol storage tank |
| CN111056920B (en) * | 2019-12-17 | 2022-09-09 | 陕西渭河煤化工集团有限责任公司 | Recovery method of volatile gas-phase methanol in methanol storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20191028 |