CN205188170U - Comprehensive utilization system is retrieved to useless methyl alcohol of different water content of synthetic gas system ethylene glycol technology - Google Patents
Comprehensive utilization system is retrieved to useless methyl alcohol of different water content of synthetic gas system ethylene glycol technology Download PDFInfo
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- CN205188170U CN205188170U CN201520852707.5U CN201520852707U CN205188170U CN 205188170 U CN205188170 U CN 205188170U CN 201520852707 U CN201520852707 U CN 201520852707U CN 205188170 U CN205188170 U CN 205188170U
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Abstract
The utility model relates to a comprehensive utilization system is retrieved to useless methyl alcohol of different water content of synthetic gas system ethylene glycol technology is equipped with a plurality of recovery methyl alcohol storage tanks that are used for retrieving different water content methyl alcohol respectively, the recoverable methyl alcohol discharge port of corresponding water content methyl alcohol among the access connection synthetic gas system ethylene glycol process systems of recovery methyl alcohol storage tank, permit the retrieval and utilization methyl alcohol import of the corresponding water content methyl alcohol of retrieval and utilization among the exit linkage synthetic gas system ethylene glycol process systems of recovery methyl alcohol storage tank, it is a plurality of in retrieving the methyl alcohol storage tank, be used for at least retrieving and be equipped with the import of fresh methyl alcohol on the recovery methyl alcohol storage tank of minimum water content methyl alcohol. The utility model discloses retrieve the methyl alcohol retrieval and utilization according to the technological requirement with different water content and to the different processes in, avoided intermediate dimethyl oxalate to take place to hydrolysis, effectively improve the ethylene glycol yield, reduce methyl alcohol consumption and device energy consumption.
Description
Technical field
The utility model relates to a kind of Methanol Recovery utilization system for synthetic gas preparing ethylene glycol technique.
Background technology
In synthetic gas preparing ethylene glycol technique, multiple operation all needs to use excessive methyl alcohol to carry out reacting or washing process gas, and these excessive methanols can produce the different cyclically utilizing methyl alcohol of water content in subsequent technique treating processes.The meeting such as the intermediate product dimethyl oxalate of synthetic gas preparing ethylene glycol production technique and the water generation hydrolysis reaction in methyl alcohol, therefore affect the yield of final product ethylene glycol.
Summary of the invention
In order to overcome the above-mentioned defect under prior art, the purpose of this utility model is to provide a kind of synthetic gas preparing ethylene glycol technique different moisture content to give up Methanol Recovery utilization system, recovery comprehensive utilization can be carried out by the useless methyl alcohol different to water content, intermediate product dimethyl oxalate is avoided to be hydrolyzed, improve yield, reduce methanol consumption.
The technical solution of the utility model is:
A kind of synthetic gas preparing ethylene glycol technique different moisture content gives up Methanol Recovery utilization system, be provided with multiple recovery methanol tank being respectively used to reclaim different moisture content methyl alcohol, the import of described recovery methanol tank connects the recyclable methanol emissions mouth of corresponding water content methyl alcohol in synthetic gas preparing ethylene glycol process system, and the outlet of described recovery methanol tank connects the reuse methyl alcohol import allowing the corresponding water content methyl alcohol of reuse in synthetic gas preparing ethylene glycol process system.
In multiple described recovery methanol tank, the recovery methanol tank at least for reclaiming minimum water content methyl alcohol is provided with fresh methanol import.
For reclaim different moisture content methyl alcohol recovery methanol tank between can also be provided with transfer lime between tank, between described tank, transfer lime is provided with transferpump and corresponding valve between tank.
Described recovery methanol tank is preferably two, be respectively the higher recovery methanol tank of water content and the lower recovery methanol tank of water content, the outlet of the recovery methanol tank that water content is lower connects the reuse methyl alcohol import absorbing one or more operations in operation containing barkite pump flush operation and barkite.
The outlet of the recovery methanol tank that water content is lower also connects the reuse methyl alcohol import of barkite storagetank, the material outlet of barkite absorption operation connects the material inlet of described barkite storagetank, and the material outlet of described barkite storagetank connects the material inlet of barkite hydrogenation process through pipeline.
The material outlet of described barkite hydrogenation process connects the material inlet of ethylene glycol rectification working process through pipeline.
The material outlet of described ethylene glycol rectification working process preferably connects the import of the lower recovery methanol tank of described water content through pipeline.
The outlet of the recovery methanol tank that water content is higher connects the reuse methyl alcohol import of one or more operations in an esterification step, methanol wash operation and tail gas absorption operation respectively.
A described esterification step, methanol wash operation export with the useless methanol charge of tail gas absorption operation the treating material import being connected useless methyl alcohol treatment process through pipeline, and the recovery methanol outlet of described useless methyl alcohol treatment process connects the import of the higher recovery methanol tank of water content through pipeline.
The upstream of described useless methyl alcohol treatment process is also preferably provided with useless methanol tank, and described useless methanol charge outlet connects the import of described useless methanol tank through pipeline, the outlet of described useless methanol tank connects the treating material import of described useless methyl alcohol treatment process.
The beneficial effects of the utility model are:
Because the useless methyl alcohol that need recycle has been undertaken reclaiming respectively by water ratio difference, and be back to use in different systems by processing requirement, effectively prevent intermediate product dimethyl oxalate etc. to be hydrolyzed, thus improve the yield of final product ethylene glycol, reduce methanol consumption and system energy consumption.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of an embodiment of the present utility model.
Embodiment
The utility model provides a kind of synthetic gas preparing ethylene glycol technique different moisture content and to give up Methanol Recovery utilization system, and this system is provided with multiple recovery methanol tank being respectively used to reclaim different moisture content methyl alcohol.The import of described recovery methanol tank connects the recyclable methanol emissions mouth of corresponding water content methyl alcohol in synthetic gas preparing ethylene glycol process system.Such as be provided with three and reclaim methanol tank and the recyclable methyl alcohol being respectively used to store high, medium and low three kinds of water content ranges, so the multiple recyclable methanol emissions mouth of synthetic gas preparing ethylene glycol process system is also correspondingly divided into three classes according to methyl alcohol water content is high, medium and low, and being connected to the import of corresponding described recovery methanol tank, the methyl alcohol being about to reclaim reclaims by water content difference and is stored in different storage tank.
The outlet of described recovery methanol tank connects the reuse methyl alcohol import allowing the corresponding water content methyl alcohol of reuse in synthetic gas preparing ethylene glycol process system.Mode of connection can be: belonging to the import of described reuse methyl alcohol, operation is to the requirement of methyl alcohol water content tolerable limit, and the outlet of different described recovery methanol tank correspondence is connected to different described reuse methyl alcohol imports.Namely by processing requirement, the recovery methyl alcohol of different moisture content is back to use in different operations, such as recovery methyl alcohol higher for water content is back to use in the not high operation of methyl alcohol water content requirement, and recovery methyl alcohol lower for water content is back to use in the stricter operation of methyl alcohol water content requirement, intermediate product dimethyl oxalate is avoided to be hydrolyzed with this, effective raising ethylene glycol yield, reduces methanol consumption and plant energy consumption.
Described recyclable methanol emissions mouth can be the combination of any one situation following or two kinds of situations: in (1) synthetic gas preparing ethylene glycol technique, certain operation is provided with the direct discharge outlet of recyclable methyl alcohol, and the direct discharge outlet of this recyclable methyl alcohol forms described recyclable methanol emissions mouth; (2) in synthetic gas preparing ethylene glycol technique, certain operation is provided with useless methanol outlet, and described useless methanol outlet connects the import of useless methyl alcohol treatment process, recyclable methanol emissions mouth described in the export mixes of described useless methyl alcohol treatment process.
In multiple described recovery methanol tank, the recovery methanol tank at least for reclaiming minimum water content methyl alcohol is provided with fresh methanol import, for supplementary methyl alcohol or the content regulating methyl alcohol.In practice, described minimum water content refers to a tolerable limit of water content, and within the scope of this, moisture content value is all lower than the moisture content value of other divided each scopes.
Further, for reclaim different moisture content methyl alcohol recovery methanol tank between can also be provided with transfer lime between tank, between described tank, transfer lime is provided with transferpump and corresponding valve between tank.The throughput direction of pump is from the recovery methanol tank compared with low water content methyl alcohol to the recovery methanol tank of higher moisture methyl alcohol.
Fig. 1 is the schema of an embodiment of the present utility model, and described recovery methanol tank is two, is respectively the higher recovery methanol tank A1 of water content and the lower recovery methanol tank B2 of water content.Wherein, the outlet of the recovery methanol tank B2 that water content is lower connects respectively and absorbs the respective reuse methyl alcohol import to the stricter operation of methyl alcohol water content requirement such as operation 7 containing barkite pump flush operation 8 and barkite.The outlet of the recovery methanol tank B2 that water content is lower also connects the reuse methyl alcohol import of barkite storagetank 6, the material outlet of barkite absorption operation 7 connects the material inlet of described barkite storagetank 6, and the material outlet of described barkite storagetank 6 connects the material inlet of barkite hydrogenation process 11 through pipeline.The material outlet of described barkite hydrogenation process 11 connects the material inlet of ethylene glycol rectification working process 12 through pipeline.The material outlet of described ethylene glycol rectification working process connects the import of the lower recovery methanol tank B2 of described water content through pipeline.
The outlet of the recovery methanol tank A1 that water content is higher connects the reuse methyl alcohol import to the not high operation of methyl alcohol water content requirement such as an esterification step 3, methanol wash operation 4 and tail gas absorption operation 5 respectively.A described esterification step, methanol wash operation export with the useless methanol charge of tail gas absorption operation etc. the import being connected useless methanol tank 9 through pipeline, the outlet of described useless methanol tank connects the treating material import of described useless methyl alcohol treatment process 10, and the recovery methanol outlet of described useless methyl alcohol treatment process connects the import of the higher recovery methanol tank A1 of water content through pipeline.The useless methanol charge that the operations such as a described esterification step, methanol wash operation and tail gas absorption operation produce sends into useless methyl alcohol treatment process after useless methanol tank, and the recovery methyl alcohol after process returns recovery methanol tank and waits until next cycling and reutilization.
13 is the fresh methanol import that described recovery methanol tank A1 and B2 is provided with separately.
Claims (10)
1. a synthetic gas preparing ethylene glycol technique different moisture content gives up Methanol Recovery utilization system, it is characterized in that being provided with multiple recovery methanol tank being respectively used to reclaim different moisture content methyl alcohol, the import of described recovery methanol tank connects the recyclable methanol emissions mouth of corresponding water content methyl alcohol in synthetic gas preparing ethylene glycol process system, and the outlet of described recovery methanol tank connects the reuse methyl alcohol import allowing the corresponding water content methyl alcohol of reuse in synthetic gas preparing ethylene glycol process system.
2. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 1 gives up Methanol Recovery utilization system, it is characterized in that in multiple described recovery methanol tank, the recovery methanol tank at least for reclaiming minimum water content methyl alcohol is provided with fresh methanol import.
3. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 2 gives up Methanol Recovery utilization system, it is characterized in that being provided with transfer lime between tank between the recovery methanol tank for reclaiming different moisture content methyl alcohol, between described tank, transfer lime is provided with transferpump and corresponding valve between tank.
4. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 3 gives up Methanol Recovery utilization system, it is characterized in that described recovery methanol tank is two, be respectively the higher recovery methanol tank of water content and the lower recovery methanol tank of water content, the outlet of the recovery methanol tank that water content is lower connects the reuse methyl alcohol import absorbing one or more operations in operation containing barkite pump flush operation and barkite.
5. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 4 gives up Methanol Recovery utilization system, it is characterized in that the outlet of the recovery methanol tank that water content is lower also connects the reuse methyl alcohol import of barkite storagetank, the material outlet of barkite absorption operation connects the material inlet of described barkite storagetank, and the material outlet of described barkite storagetank connects the material inlet of barkite hydrogenation process through pipeline.
6. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 5 gives up Methanol Recovery utilization system, it is characterized in that the material outlet of described barkite hydrogenation process connects the material inlet of ethylene glycol rectification working process through pipeline.
7. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 6 gives up Methanol Recovery utilization system, it is characterized in that the material outlet of described ethylene glycol rectification working process connects the import of the lower recovery methanol tank of described water content through pipeline.
8. the synthetic gas preparing ethylene glycol technique different moisture content as described in claim 4,5,6 or 7 gives up Methanol Recovery utilization system, it is characterized in that the outlet of the recovery methanol tank that water content is higher connects the reuse methyl alcohol import of one or more operations in an esterification step, methanol wash operation and tail gas absorption operation respectively.
9. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 8 gives up Methanol Recovery utilization system, it is characterized in that a described esterification step, methanol wash operation export with the useless methanol charge of tail gas absorption operation the treating material import being connected useless methyl alcohol treatment process through pipeline, the recovery methanol outlet of described useless methyl alcohol treatment process connects the import of the higher recovery methanol tank of water content through pipeline.
10. synthetic gas preparing ethylene glycol technique different moisture content as claimed in claim 9 gives up Methanol Recovery utilization system, it is characterized in that the upstream of described useless methyl alcohol treatment process is also provided with useless methanol tank, described useless methanol charge outlet connects the import of described useless methanol tank through pipeline, the outlet of described useless methanol tank connects the treating material import of described useless methyl alcohol treatment process.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269084A (en) * | 2018-12-04 | 2020-06-12 | 上海浦景化工技术股份有限公司 | Method for removing methyl formate and/or dimethyl carbonate in methanol |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111269084A (en) * | 2018-12-04 | 2020-06-12 | 上海浦景化工技术股份有限公司 | Method for removing methyl formate and/or dimethyl carbonate in methanol |
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