CN108329192A - In a kind of methanol production in gas recovery crude carbinol method and device - Google Patents
In a kind of methanol production in gas recovery crude carbinol method and device Download PDFInfo
- Publication number
- CN108329192A CN108329192A CN201810038417.5A CN201810038417A CN108329192A CN 108329192 A CN108329192 A CN 108329192A CN 201810038417 A CN201810038417 A CN 201810038417A CN 108329192 A CN108329192 A CN 108329192A
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- Prior art keywords
- methanol
- gas
- wash column
- tower tray
- tower
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1487—Removing organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/10—Inorganic absorbents
- B01D2252/103—Water
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention relates to the method for crude carbinol in gas recovery in a kind of methanol production, the synthesis gas that middle pressure methyl alcohol synthetic reactor comes out cools down by condensation, contains part methanol gas in the process gas after methanol separating device, including：A. the tower tray of one group of washing methanol gas is equipped in Methanol Wash Column, process gas enters Methanol Wash Column by top inlet and reaches wash tower bottoms, and process gas from bottom to top moves；B. desalted water enters first layer tower tray up to basecoat tower tray at the top of Methanol Wash Column, completes mass transfer successively with the process gas of rising and absorbs to form methanol absorption liquid, methanol absorption liquid goes to methanol medial launder after obtaining step by step concentration；C. the gas come out from Methanol Wash Column enters seven sections of imports of compressor after demister detaches moisture content.The advantage of the invention is that：Efficiently separate the gaseous methanol in process gas, obtain >=60% dilute methanol so that in exhaust gas methanol content drop to be bordering on zero degree, while reducing pollution again.
Description
Technical field
The invention belongs to middle pressure methanol production equipment, more particularly in a kind of methanol production in gas recovery crude glycol dress
It sets.
Background technology
In existing middle pressure system for methanol synthesis, synthetic reaction gas is after methanol separator carries out gas-liquid separation, separation
Gas after methanol goes directly to seven sections of compressor and is compressed, after carrying some misty methanol in the gas secretly with seven sections of compressions,
Separation draining is divided to be immediately discharged in grease through grease, methanol is not returned, and waste is caused.
Invention content：
The purpose of the present invention is exactly that utilization rate existing in the prior art is low, heavy-polluted disadvantage in order to solve, the one kind provided
In methanol production in gas recovery crude carbinol device.
Technical scheme is as follows：
1, in a kind of methanol production in gas recovery crude carbinol method, including existing processing step comes from compressor six
The compression unstripped gas of section, the synthesis gas for pressing methyl alcohol synthetic reactor to be formed in, the work after condensation cooling, methanol gas-liquid separation
Contain some methanol gas in skill gas, it is characterised in that：
A., Methanol Wash Column is set, the tower tray of one group of washing methanol gas is provided with, by the work after methanol gas-liquid separation
Skill gas, into the bottom of Methanol Wash Column, process gas from bottom to top moves；
B. desalted water enters first layer tower tray at the top of Methanol Wash Column, and completing first time mass transfer with the process gas of rising absorbs
Methanol absorption liquid is formed, methanol absorption liquid enters back into second layer tower tray and the process gas of rising completes second of absorption, until
Last time is completed into basecoat tower tray to absorb, methanol absorption liquid goes to methanol medial launder after obtaining step by step concentration；
C. the gas come out from Methanol Wash Column is entrained with the oversaturated moisture content of saturation, enters after demister detaches moisture content
Seven sections of imports of compressor.
2, a kind of device for realizing crude carbinol method in gas recovery in methanol production, it is characterised in that by Methanol Wash Column
And its connected water pump and demineralized water tank composition, Methanol Wash Column include tower body, and one group is equipped in tower body by stainless steel mesh group
At tower tray, filler pipe and air inlet pipe are connected at the top of tower body, filler pipe and first piece of tower tray corresponding matching of top layer, air inlet pipe stretch into
Coordinate to tower body bottom and lowest level tower tray, gas outlet is additionally provided at the top of tower body, tower body bottom is equipped with methanol leakage fluid dram.
Wherein tower tray is made of stainless steel mesh, slows down demineralized water fall off rate, improves gas and demineralized water time of contact,
Fully absorb the misty methanol carried secretly in gas.
The advantage of the invention is that：
The gaseous methanol in purification process gas, and the supersaturated minor amount of water of entrainment are efficiently separated, >=60% dilute first is obtained
Alcohol so that in exhaust gas methanol content drop to be bordering on zero degree, while reducing pollution again.
Description of the drawings：
Fig. 1 is the artwork of recycling methanol provided by the invention；
Fig. 2 is that alcohol provided by the invention washes tower internal structure chart.
Specific implementation mode：
One, present invention firstly provides the devices of crude carbinol in gas recovery in a kind of methanol production, are filled in middle pressure methanol-fueled CLC
A Methanol Wash Column is connected after the alcohol separating device set, Methanol Wash Column connects softened water pump and demineralized water tank provides washings, methanol
Scrubbing tower gas vent is connected to seven cylinder of compressor.
Methanol Wash Column includes tower body 1, and one group is equipped in tower body 1 and forms tower tray 2,1 top of tower body by stainless steel mesh
Be connected with filler pipe 4 and air inlet pipe 3, water pipe 4 and first piece of tower tray corresponding matching of top layer, air inlet pipe 3 extend into tower body bottom with
Lowest level tower tray coordinates, and 1 top of tower body is additionally provided with gas outlet, and 1 bottom of tower body is equipped with methanol leakage fluid dram 5.Wherein tower tray is by stainless
Steel mesh shape forms.
Two, in a kind of methanol production provided by the invention in gas recovery crude carbinol method, include the following steps：
A. be located at six sections of compressor synthesis gas, methyl alcohol synthetic reactor is pressed in, out contain CH30H、CO、H2、N2Process gas
（12MPa 、40℃）, after condensation cooling, alcohol separating device gas-liquid separation go out methanol, some first is contained in remaining gas
Alcohol gas enters Methanol Wash Column by top inlet, and gas reaches tower bottom by tracheae, from bottom to top enters first piece of lower part
Tower tray carries out washing net alcohol, and gas-phase methanol concentration step by step tray reduces in water scrubber, and until first piece of top tower tray, alcohol washes tower wash-in
It is 35 DEG C to wash temperature, inlet outlet pressure differential 0.1MPA.
B. the gas come out from washing column plate is entrained with the oversaturated moisture content of saturation, enters after demisting unit detaches moisture content
Compressor seven into,
C.30 DEG C desalted water is adjusted to flow 75L/h through plunger pump and flow regulator, and the is completed into tower top first layer tower tray
One time mass transfer absorbs, and enters back into second layer tower tray and completes second of absorption, finally enters basecoat tower tray and complete last time
It absorbs and obtains step by step concentration, the methanol in such gas can be absorbed, and methanol goes to smart alcohol processing, has the function that recycling.
Wherein tower tray is made of stainless steel mesh, and the whole welding from top to bottom of tower internals is installed, and is slowed down under demineralized water
Reduction of speed rate improves gas and demineralized water time of contact, fully absorbs the misty methanol carried secretly in gas.
It installs an alcohol additional after alcohol point now and washes tower, extract brine with plunger pump, added to 75 kilograms of demineralized waters per hour
Alcohol is washed in tower and is washed to the misty methanol gas after alcohol point, and recoverable methanol concentration about 60% can recycle 1.8 tons daily,
It is about 1 ton to be converted to smart alcohol.The dilute methanol concentration of absorption reaches 60% or more, is discharged into dilute methanol storage tank by automatic adjustment, finally
With crude carbinol together with enter methanol rectification process.
Claims (2)
1. in a kind of methanol production in gas recovery crude carbinol method, including existing processing step comes from compressor six
The compression unstripped gas of section, the synthesis gas for pressing methyl alcohol synthetic reactor to be formed in, the work after condensation cooling, methanol gas-liquid separation
Contain some methanol gas in skill gas, it is characterised in that：
A., Methanol Wash Column is set, the tower tray of one group of washing methanol gas is provided with, by the work after methanol gas-liquid separation
Skill gas, into the bottom of Methanol Wash Column, process gas from bottom to top moves；
B. desalted water enters first layer tower tray at the top of Methanol Wash Column, and completing first time mass transfer with the process gas of rising absorbs
Methanol absorption liquid is formed, methanol absorption liquid enters back into second layer tower tray and the process gas of rising completes second of absorption, until
Last time is completed into basecoat tower tray to absorb, methanol absorption liquid goes to methanol medial launder after obtaining step by step concentration；
C. the gas come out from Methanol Wash Column is entrained with the oversaturated moisture content of saturation, enters after demister detaches moisture content
Seven sections of imports of compressor.
2. a kind of device for realizing crude carbinol method in gas recovery in methanol production, it is characterised in that by Methanol Wash Column and its
Connected water pump and demineralized water tank composition, Methanol Wash Column includes tower body（1）, tower body（1）In be equipped with one group by stainless steel mesh
Form tower tray（2）, tower body（1）Top is connected with filler pipe（4）And air inlet pipe（3）, filler pipe（4）With first piece of tower tray pair of top layer
It should coordinate, air inlet pipe（3）It extend into tower body bottom with lowest level tower tray to coordinate, tower body（1）Top is additionally provided with gas outlet, tower body
（1）Bottom is equipped with methanol leakage fluid dram（5）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038417.5A CN108329192A (en) | 2018-01-13 | 2018-01-13 | In a kind of methanol production in gas recovery crude carbinol method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810038417.5A CN108329192A (en) | 2018-01-13 | 2018-01-13 | In a kind of methanol production in gas recovery crude carbinol method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108329192A true CN108329192A (en) | 2018-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810038417.5A Pending CN108329192A (en) | 2018-01-13 | 2018-01-13 | In a kind of methanol production in gas recovery crude carbinol method and device |
Country Status (1)
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| CN (1) | CN108329192A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521968A (en) * | 2021-08-17 | 2021-10-22 | 安徽金禾实业股份有限公司 | Device and method for purifying alcohol post-gas in ammonia synthesis system |
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| CN101619052A (en) * | 2009-08-03 | 2010-01-06 | 石药集团维生药业（石家庄）有限公司 | Methanol waste gas recovery technology in vitamin C producing process |
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| CN106478370A (en) * | 2016-10-11 | 2017-03-08 | 东华工程科技股份有限公司 | A kind of method for reclaiming methyl alcohol in improved methanol rectification periodic off-gases |
| CN206103656U (en) * | 2016-08-19 | 2017-04-19 | 金能科技股份有限公司 | Wash pure tower |
| CN106946657A (en) * | 2015-12-18 | 2017-07-14 | 乔治·克劳德方法的研究开发空气股份有限公司 | For the washing facility for separating methanol with gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113521968A (en) * | 2021-08-17 | 2021-10-22 | 安徽金禾实业股份有限公司 | Device and method for purifying alcohol post-gas in ammonia synthesis system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180727 |
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| RJ01 | Rejection of invention patent application after publication |