CN106039762B - A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect - Google Patents
A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect Download PDFInfo
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- CN106039762B CN106039762B CN201610524619.1A CN201610524619A CN106039762B CN 106039762 B CN106039762 B CN 106039762B CN 201610524619 A CN201610524619 A CN 201610524619A CN 106039762 B CN106039762 B CN 106039762B
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- storage tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
- B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extraction Or Liquid Replacement (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect of the present invention, belongs to Organic Chemical Engineering technical field；The prewashing methanol storage tank A and prewashing methanol storage tank B that would sit idle for are as extractor, the unqualified crude benzol of crude benzol storage tank is sent to prewashing methanol storage tank A, after fully being detached in crude benzol after water after sufficient standing, pass through prewashing methanol sump pump, visor two, shut-off valve one, shut-off valve three send bottom water to prewashing methanol storage tank B, pump discharge medium color situation is observed by visor two, when in visor being crude benzol, shut-off valve six is opened, qualified crude benzol is sent out into battery limit (BL)；After crude benzol has been sent, the methanol-water in prewashing methanol storage tank B is by prewashing methanol sump pump, and visor two, shut-off valve five is sent to extractor, to return system；The prewashing methanol storage tank that would sit idle for is used as extractor, big using place capacity, and the advantage of residence time length realizes being sufficiently separated for crude benzol and methanol-water.
Description
Technical field
A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect of the present invention, belongs to Organic Chemical Engineering
Technical field.
Background technology
Low-temp methanol washing process is in the 1950s, strange by German Shandong（Lurgi）Company and woods DS（Linde）Company joins
A kind of raw material gas purifying method for running hair jointly after the 1960s, is filled with using residual oil and coal as the Large-scale Ammonia Plant of raw material
The appearance and development set, low-temp methanol washing technology are widely answered in ammonia processed and methanol-fueled CLC and F- T synthesis industry
With.Low-temp methanol washing method can remove the various ingredients in gas, and in a low temperature of being up to -70 DEG C at -30 DEG C, methanol can be simultaneously
Remove the solid particulate matter in H2S, COS, CS2, RSH, C4H4S, CO2, HCN, NH3, aromatic hydrocarbon and the raw gas in raw gas
Etc. components.
Low-temp methanol washes middle prewashing methanol and contains crude benzol, need to pass through extraction removing, using methanol be dissolved in after water density with it is thick
Benzene is different and detaches, and the extract liquor of the effect of gravity settling separation and unit volume residence time in extractor has
It closes, therefore, improves the extract liquor of the unit volume residence time in extractor, then the effect for extracting classification is better, i.e. crude benzol
Middle water content is minimum, and crude benzol content is minimum in methanol-water.
Invention content
Overcome the deficiencies in the prior art of the present invention, it is existing in low-temp methanol washing process the technical problem to be solved is that utilizing
Equipment provides a kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of raising low-temp methanol washes prewashing first
The method of alcohol effect of extracting, the prewashing methanol storage tank A5 and prewashing methanol storage tank B6 that would sit idle for are as extractor, by crude benzol storage tank 3
Unqualified crude benzol send to prewashing methanol storage tank A5, detached in crude benzol after water after sufficient standing, pass through prewashing methanol sump pump
7, visor 28, shut-off valve 1, shut-off valve 3 11 send bottom water to prewashing methanol storage tank B6, is pumped out by the observation of visor 28
Mouth medium color situation opens shut-off valve 6 14 when in visor being crude benzol, and qualified crude benzol is sent out battery limit (BL)；After crude benzol has been sent,
Methanol-water in prewashing methanol storage tank B6 is sent by prewashing methanol sump pump 7, visor 28, shut-off valve 5 13 to extractor 1, from
And return system.
The method that a kind of raising low-temp methanol washes prewashing methanol extraction effect, the prewashing methanol storage tank A（5）With
Prewashing methanol storage tank B（6）In extractant be desalted water.
A kind of device for improving low-temp methanol and washing prewashing methanol extraction effect, including extractor 1, crude benzol pump 2, crude benzol storage tank
3, visor 1, prewashing methanol storage tank A5, prewashing methanol storage tank B6, prewashing methanol sump pump 7, visor 28, shut-off valve 1, cut
Only valve 2 10, shut-off valve 3 11, shut-off valve 4 12, shut-off valve 5 13, shut-off valve 6 14；The extractor 1 and crude benzol storage tank 3 it
Between be connected with crude benzol pump 2, crude benzol storage tank 3 connect by pipeline with prewashing methanol storage tank A5 feed ends, the crude benzol storage tank 3 and in advance
It washes in the connecting pipe of methanol storage tank A5 feed ends and is provided with visor 1, shut-off valve 4 12, shut-off valve 2 10；Prewashing methanol is store
The discharge end of slot A5 is connect by pipeline with the feed end of prewashing methanol storage tank B6, the discharge end of the prewashing methanol storage tank A5 with
It is provided with prewashing methanol sump pump 7 in the connecting pipe of the feed end of prewashing methanol storage tank B6, visor 28, shut-off valve 1, cuts
Only valve 3 11；It is provided with the pipeline of connection extractor 1 between visor 28 and shut-off valve 1, and is provided with cut-off on pipeline
Valve 5 13；It is connected with crude benzol in visor 28 and shut-off valve 5 13 and sends out pipeline, and is provided with shut-off valve 6 14 on pipeline.
Compared with prior art the invention has the advantages that.
1, in low-temp methanol washing process, in the case where not increasing extras, the prewashing methanol storage tank that would sit idle for is sharp
It uses as extractor, the advantage of residence time length big using place capacity, by the extraction of two prewashing methanol storage tanks,
Being sufficiently separated for crude benzol and methanol-water is realized, reduces finished product tank field and returns waterside number, or even disposably reach qualified products matter
Amount.
2, visor is increased on the outlet line of extraction equipment, to may determine that extraction by the color for observing medium
Operating mode, reduce the work of the frequent sampling analysis of worker, that is, save manpower in turn avoid the poisonous and harmful medium of worker exposure
Crude benzol.
Description of the drawings
Fig. 1 is the square apparatus structure schematic diagram for improving low-temp methanol and washing prewashing methanol extraction effect.
It is marked in figure as follows：1 extractor, 2 crude benzol pump, 3 crude benzol storage tanks, 4 visors one, 5 prewashing methanol storage tank A, 6 prewashing first
Alcohol storage tank B, 7 prewashing methanol sump pumps, 8 visors two, 9 shut-off valves one, 10 shut-off valves two, 11 shut-off valves three, 12 shut-off valves four, 13
Shut-off valve five, 14 shut-off valves six.
Specific implementation mode
Below in conjunction with specific embodiment, the invention will be further described.
Embodiment 1
A method of it improving low-temp methanol and washes prewashing methanol extraction effect, the prewashing methanol storage tank A5 that would sit idle for and prewashing
Methanol storage tank B6 send the unqualified crude benzol of crude benzol storage tank 3 to prewashing methanol storage tank A5 as extractor, waits for sufficient standing point
After water in crude benzol, by prewashing methanol sump pump 7, visor 28, shut-off valve 1, shut-off valve 3 11 send bottom water to prewashing
Methanol storage tank B6 observes pump discharge medium color situation by visor 28 and opens shut-off valve 6 14 when in visor being crude benzol, will
Qualified crude benzol sends out battery limit (BL)；After crude benzol has been sent, methanol-water in prewashing methanol storage tank B6 by prewashing methanol sump pump 7, depending on
Mirror 28, shut-off valve 5 13 are sent to extractor 1, to return system.
A kind of device for improving low-temp methanol and washing prewashing methanol extraction effect, including extractor 1, crude benzol pump 2, crude benzol storage tank
3, visor 1, prewashing methanol storage tank A5, prewashing methanol storage tank B6, prewashing methanol sump pump 7, visor 28, shut-off valve 1, cut
Only valve 2 10, shut-off valve 3 11, shut-off valve 4 12, shut-off valve 5 13, shut-off valve 6 14；The extractor 1 and crude benzol storage tank 3 it
Between be connected with crude benzol pump 2, crude benzol storage tank 3 connect by pipeline with prewashing methanol storage tank A5 feed ends, the crude benzol storage tank 3 and in advance
It washes in the connecting pipe of methanol storage tank A5 feed ends and is provided with visor 1, shut-off valve 4 12, shut-off valve 2 10；Prewashing methanol is store
The discharge end of slot A5 is connect by pipeline with the feed end of prewashing methanol storage tank B6, the discharge end of the prewashing methanol storage tank A5 with
It is provided with prewashing methanol sump pump 7 in the connecting pipe of the feed end of prewashing methanol storage tank B6, visor 28, shut-off valve 1, cuts
Only valve 3 11；It is provided with the pipeline of connection extractor 1 between visor 28 and shut-off valve 1, and is provided with cut-off on pipeline
Valve 5 13；It is connected with crude benzol in visor 28 and shut-off valve 5 13 and sends out pipeline, and is provided with shut-off valve 6 14 on pipeline.
The present invention can be summarized with others without prejudice to the concrete form of the spirit or essential characteristics of the present invention.Therefore, nothing
By from the point of view of which point, the embodiment above of the invention can only all be considered the description of the invention and cannot limit invention,
Claims indicate the scope of the present invention, and above-mentioned explanation does not point out the scope of the present invention, therefore, with the present invention
The comparable meaning and scope of claims in any variation, be all considered as being included within the scope of the claims.
Claims (3)
1. a kind of method for improving low-temp methanol and washing prewashing methanol extraction effect, it is characterised in that：The prewashing methanol storage that would sit idle for
Slot A（5）With prewashing methanol storage tank B（6）As extractor, by crude benzol storage tank（3）Unqualified crude benzol send to prewashing methanol storage tank A
（5）It is interior, after water in sufficient standing separation crude benzol, pass through prewashing methanol sump pump（7）, visor two（8）, shut-off valve one（9）, cut
Only valve three（11）Bottom water is sent to prewashing methanol storage tank B（6）, pass through visor two（8）Pump discharge medium color situation is observed, is waited for
When being crude benzol in visor, shut-off valve six is opened（14）, qualified crude benzol is sent out into battery limit (BL)；After crude benzol has been sent, prewashing methanol storage tank B
（6）Interior methanol-water passes through prewashing methanol sump pump（7）, visor two（8）, shut-off valve five（13）It send to extractor（1）, to return
The system of returning.
2. a kind of method for improving low-temp methanol and washing prewashing methanol extraction effect according to claim 1, which is characterized in that
The prewashing methanol storage tank A（5）With prewashing methanol storage tank B（6）In extractant be desalted water.
3. a kind of device for improving low-temp methanol and washing prewashing methanol extraction effect, it is characterised in that：Including extractor（1）, crude benzol
Pump（2）, crude benzol storage tank（3）, visor one（4）, prewashing methanol storage tank A（5）, prewashing methanol storage tank B（6）, prewashing methanol sump pump
（7）, visor two（8）, shut-off valve one（9）, shut-off valve two（10）, shut-off valve three（11）, shut-off valve four（12）, shut-off valve five
（13）, shut-off valve six（14）；The extractor（1）With crude benzol storage tank（3）Between be connected with crude benzol pump（2）, crude benzol storage tank（3）It is logical
Piping and prewashing methanol storage tank A（5）Feed end connects, the crude benzol storage tank（3）With prewashing methanol storage tank A（5）Feed end
Visor one is provided in connecting pipe（4）, shut-off valve four（12）, shut-off valve two（10）；Prewashing methanol storage tank A（5）Discharge end
Pass through pipeline and prewashing methanol storage tank B（6）Feed end connection, the prewashing methanol storage tank A（5）Discharge end and prewashing methanol
Storage tank B（6）Feed end connecting pipe on be provided with prewashing methanol sump pump（7）, visor two（8）, shut-off valve one（9）, cut
Only valve three（11）；In visor two（8）With shut-off valve one（9）Between be provided with connection extractor（1）Pipeline, and set on pipeline
It is equipped with shut-off valve five（13）；In visor two（8）With shut-off valve five（13）It is connected with crude benzol and sends out pipeline, and be provided on pipeline
Shut-off valve six（14）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524619.1A CN106039762B (en) | 2016-07-06 | 2016-07-06 | A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524619.1A CN106039762B (en) | 2016-07-06 | 2016-07-06 | A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect |
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| Publication Number | Publication Date |
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| CN106039762A CN106039762A (en) | 2016-10-26 |
| CN106039762B true CN106039762B (en) | 2018-08-31 |
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| CN201610524619.1A Active CN106039762B (en) | 2016-07-06 | 2016-07-06 | A kind of method and device for improving low-temp methanol and washing prewashing methanol extraction effect |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201823340U (en) * | 2010-07-02 | 2011-05-11 | 陕西神木化学工业有限公司 | Methanol oil recovering device |
| CN201855584U (en) * | 2010-09-29 | 2011-06-08 | 山西潞安矿业(集团)有限责任公司 | Dewatering device of methanol for low-temperature methanol washing |
| CN104718177B (en) * | 2012-10-09 | 2017-03-08 | 埃克森美孚化学专利公司 | Alkene is reclaimed by xylol technique |
| CN104436998A (en) * | 2013-09-17 | 2015-03-25 | 中国石油化工股份有限公司 | Method for removing acid gas by adopting methanol as absorbent |
| CN103508847B (en) * | 2013-09-30 | 2016-06-08 | 天津大学 | A kind of method of high-purity butanols of butanols dewatering and recovery and device |
| CN104370700B (en) * | 2014-11-11 | 2016-01-20 | 唐山中润煤化工有限公司 | The reclaiming system of thick alcohol solution gas and method in coke-oven gas methanol technics |
| CN205199039U (en) * | 2015-12-02 | 2016-05-04 | 天津渤化永利化工股份有限公司 | Equipment of impurity in high -efficient desorption low temperature methanol washing system washing methyl alcohol |
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| CN106039762A (en) | 2016-10-26 |
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