CN105947980A - Recovery method of purge gas of hydrogenation system - Google Patents
Recovery method of purge gas of hydrogenation system Download PDFInfo
- Publication number
- CN105947980A CN105947980A CN201610259994.8A CN201610259994A CN105947980A CN 105947980 A CN105947980 A CN 105947980A CN 201610259994 A CN201610259994 A CN 201610259994A CN 105947980 A CN105947980 A CN 105947980A
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- gases
- periodic
- compressor
- purge gas
- hydrogenation
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/50—Separation of hydrogen or hydrogen containing gases from gaseous mixtures, e.g. purification
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention provides a recovery method of purge gas of hydrogenation system in butyl-octyl alcohol project. The method includes accessing the purge gas into a first order inlet of a hydrogen nitrogen mixture compressor, mixing the purge gas and semi-water gas, sending the mixture into the compressor, and sending the compressed mixture into subsequent section for producing synthesis ammonia. The method sends the purge gas into the hydrogen nitrogen mixture compressor for recovery and utilization, and more 2 tons of synthesis ammonia can be produced every hour.
Description
Technical field
The invention belongs to chemical field, be specifically related to the periodic off-gases recovery method of hydrogenation system in a kind of octyl alconyl project.
Background technology
Butanol and capryl alcohol are owing to can produce by the method for oxo process in same set of device, therefore custom is referred to as octyl alconyl.Butanol
It is water white transparency, inflammable oily liquids with capryl alcohol, there is special odor, azeotropic mixture can be formed with water and multiple compounds,
All there is moderate toxicity.Octyl alconyl is the important source material of synthesis fine chemical product, mainly for the production of plasticizer, solvent, dehydration
Agent, defoamer, dispersant, flotation agent, petroleum additive and synthetic perfume etc..
In world wide, newly-built butyl octanol unit all uses modified rhodium series catalysts low pressure oxo synthesis at present, with propylene, conjunction
Becoming gas and hydrogen is raw material, generates mixing butyraldehyde under catalyst action, isolates catalyst and recycles, is just isolating/isobutyl
Aldehyde hydrogenated generation n-butyl alcohol and isobutanol, through rectification isolated n-butyl alcohol and isobutanol product；Hutanal is at sodium hydroxide
Under catalytic action, condensation dehydration generates octenal, and octenal hydrogenation is produced thick capryl alcohol, obtained product capryl alcohol through rectification.
The hydrogenation system periodic off-gases of butyl octanol unit discharge, is periodic off-gases when octenal, butyraldehyde hydrogenation, is mainly composed of hydrogen
With methane etc., hydrogen content more than 85%, be the discharge carried out to prevent the accumulation of system. Inert gas, original design should
Stock periodic off-gases is sent to waste gas stove and is burned producing steam, causes bigger waste.
For current problem, the present invention proposes the scheme that hydrogenation system periodic off-gases reclaims.
Summary of the invention
It is an object of the invention to provide a kind of hydrogenation system periodic off-gases reclaim method, be used for process octyl alconyl produce in octenal,
Periodic off-gases during butyraldehyde hydrogenation.This strand of periodic off-gases is accessed hydronitrogen compressor one-level import, after mixing with semiwater gas, sends into pressure
Contracting machine, send follow-up workshop section for producing synthesis ammonia after compression.
Advantages of the present invention: hydrogen content more than 85% in periodic off-gases, nitrogen content more than 12%, directly burns producing steam the most unrestrained
Take；And synthesis ammonia system needs hydrogen and nitrogen gas, this periodic off-gases is delivered to hydronitrogen compressor and recycles, can produce more per hour
2 tons of synthesis ammonia.
Accompanying drawing explanation
The former handling process of Fig. 1 hydrogenation system periodic off-gases
In figure, 1 is butyraldehyde gas phase hydrogenation compressor, and 2 is octenal gas phase hydrogenation compressor, and 3 is waste gas stove.
Fig. 2 hydrogenation system periodic off-gases recovery method schematic diagram
In figure, 1 is butyraldehyde gas phase hydrogenation compressor, and 2 is octenal gas phase hydrogenation compressor, and 3 is hydronitrogen compressor.
Detailed description of the invention
Embodiment 1
Certain chemical plant octyl alconyl project domestic, originally the hydrogenation system periodic off-gases of direct burning disposal, now use the present invention to provide
Periodic off-gases recovery method, hydrogen recyclable more than 95%, nitrogen recyclable more than 90%.
Embodiment 2
Certain chemical plant octyl alconyl project domestic, originally the hydrogenation system periodic off-gases of direct burning disposal, now use the present invention to provide
Periodic off-gases recovery method, is used for synthesizing ammonia, hourly output 2 tons by hydrogen and nitrogen, and based on 2500 yuan/ton, annual value of production increases
More than adding 4,000 ten thousand yuan, remarkable in economical benefits.
Claims (8)
1. the method that hydrogenation system periodic off-gases reclaims, is characterized by, the method is used for processing octenal, fourth in octyl alconyl project
Periodic off-gases during aldehyde hydrogenation.
2. the method for claim 1, is characterized by, hydrogen content more than 85% in this periodic off-gases, nitrogen content 12% with
On.
3. the method for claim 1, is characterized by, this periodic off-gases is delivered to hydronitrogen compressor and recycles.
4. the method for claim 1, is characterized by, first this strand of periodic off-gases is accessed hydronitrogen compressor one-level import.
5. the method for claim 1, is characterized by, sends into compressor secondly with semiwater gas after mixing.
6. the method for claim 1, is characterized by, the most compressed send follow-up workshop section for producing synthesis ammonia.
7. the method for claim 1, is characterized by, the method can produce 2 tons of synthesis ammonia per hour.
8. the method for claim 1, is characterized by, hydrogen recyclable more than 95% in periodic off-gases, nitrogen recyclable 90%
Above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259994.8A CN105947980A (en) | 2016-04-25 | 2016-04-25 | Recovery method of purge gas of hydrogenation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610259994.8A CN105947980A (en) | 2016-04-25 | 2016-04-25 | Recovery method of purge gas of hydrogenation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105947980A true CN105947980A (en) | 2016-09-21 |
Family
ID=56915792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610259994.8A Pending CN105947980A (en) | 2016-04-25 | 2016-04-25 | Recovery method of purge gas of hydrogenation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105947980A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780964A (en) * | 2010-03-09 | 2010-07-21 | 南京聚拓化工科技有限公司 | Process for synthesizing ammonia by utilizing purge gas of methanol device |
| CN104151138A (en) * | 2014-08-13 | 2014-11-19 | 中国石油大学(华东) | Process for producing alcohol type high-carbon organic solvent by using n-butanol and n-octanol residual liquid |
-
2016
- 2016-04-25 CN CN201610259994.8A patent/CN105947980A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780964A (en) * | 2010-03-09 | 2010-07-21 | 南京聚拓化工科技有限公司 | Process for synthesizing ammonia by utilizing purge gas of methanol device |
| CN104151138A (en) * | 2014-08-13 | 2014-11-19 | 中国石油大学(华东) | Process for producing alcohol type high-carbon organic solvent by using n-butanol and n-octanol residual liquid |
Non-Patent Citations (1)
| Title |
|---|
| 陈五平: "《无机化工工艺学 第三版 上册 合成氨、尿素、硝酸、硝酸铵》", 31 May 2002 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160921 |