CN103740421B - Technology for removing C3 in liquefied gas with ether removed - Google Patents
Technology for removing C3 in liquefied gas with ether removed Download PDFInfo
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- CN103740421B CN103740421B CN201310721123.XA CN201310721123A CN103740421B CN 103740421 B CN103740421 B CN 103740421B CN 201310721123 A CN201310721123 A CN 201310721123A CN 103740421 B CN103740421 B CN 103740421B
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Abstract
The invention discloses a technology for removing C3 in liquefied gas with ether removed. After impurities such as methyl alcohol, metal cations and the like in the liquefied gas with ether removed are removed by a water scrubber, the liquefied gas with ether removed enters a tower for removing C3 to remove C3 fraction. The technology can recycle 126Kg of C3 fraction per hour.
Description
Technical field
The present invention relates to the recovery and utilization technology field of liquefied gas after ether, liquefy after particularly relating to a kind of ether qi exhaustion C3 technique.
Background technology
MTBE is methyl alcohol and the hybrid C 4 containing isobutene is etherification reaction occurs under the effect of catalyst obtain at macroporous strong-acid cation resin, product MTBE is for the production of high-purity isobutylene, or carry high-octane additive in producing as high-grade gasoline, methyl alcohol superfluous in etherification reaction is recovered use.Through etherification reaction, after isolating methyl alcohol and ether, remaining is liquefied gas after ether, and its key component is iso-butane, the normal butane of about 15%, the n-butene of about 45% of about 40%.After ether, liquefied gas can regard civil liquefied gas, but comparatively normal domestic Qi Lai lecture is more expensive for its price, and pure burning result of use is also not as domestic gas.
The material this being rich in n-butene carries out skeletal isomerization and produces isobutene reaching the object that isobutene is increased production.This technique has the advantages such as raw material is cheap and easy to get, source is sufficient, the overstock problem of n-butene can be solved preferably, large content of starting materials can be provided again for ether-based device, and only at existing ether-based device added downstream isomerization unit, need therefore become the method that isobutene is increased production having development potentiality at present most.How the C3 component in liquefied gas after ether to be recycled, to improve follow-up isomerization efficiency, be the problem that the present invention needs to solve.
Summary of the invention
Object of the present invention is exactly defect for above-mentioned existence and the qi exhaustion C3 technique that liquefies after providing a kind of ether.C3 component in liquefied gas after ether can fully remove by this technique, improves follow-up isomerization reaction efficiency.
Methyl alcohol and the hybrid C 4 containing isobutene carry out etherification reaction, and after isolating methyl alcohol and ether, remaining is liquefied gas after ether, and its key component is iso-butane, the normal butane of about 15%, the n-butene of about 45% of about 40%.
The qi exhaustion C3 process technology scheme that liquefies after a kind of ether of the present invention is, removed after the impurity such as methyl alcohol, metal cation through water scrubber by liquefied gas after ether, enter de-C3 tower and slough C3 cut, the tower top temperature of de-C3 tower is 35-42 DEG C, column bottom temperature is 90-95 DEG C, and tower top pressure is 1.3-1.8MPa.
The tower top temperature of de-C3 tower is 39 DEG C, and column bottom temperature is 93 DEG C, and tower top pressure is 1.5MPa.
Containing propane 10-12% by weight percentage, propylene 88-90% in C3 cut.
Containing propane 11% by weight percentage in C3 cut, propylene 89%.
Beneficial effect of the present invention is: technique of the present invention, recyclable C3 cut 126Kg/h per hour.
detailed description of the invention:
In order to understand the present invention better, describe technical scheme of the present invention in detail with instantiation below, but the present invention is not limited thereto.
Embodiment 1
Methyl alcohol and the hybrid C 4 containing isobutene carry out etherification reaction, and after isolating methyl alcohol and ether, remaining is liquefied gas after ether, and its key component is iso-butane, the normal butane of about 15%, the n-butene of about 45% of about 40%.
Liquefy after a kind of ether of the present invention qi exhaustion C3 technique, removed after the impurity such as methyl alcohol, metal cation by liquefied gas after ether through water scrubber, enters de-C3 tower and slough C3 cut.The tower top temperature of de-C3 tower is 39 DEG C, and column bottom temperature is 93 DEG C, and tower top pressure is 1.5MPa.
Containing propane about 11% by weight percentage in C3 cut, propylene about 89%.
Recyclable C3 cut 126Kg/h per hour.
Claims (3)
1. liquefy after ether a qi exhaustion C3 technique, it is characterized in that, removes after the impurity such as methyl alcohol, metal cation by liquefied gas after ether through water scrubber, enter de-C3 tower and slough C3 cut, the tower top temperature of de-C3 tower is 35-42 DEG C, and column bottom temperature is 90-95 DEG C, and tower top pressure is 1.3-1.8MPa; Containing propane 10-12% by weight percentage, propylene 88-90% in C3 cut.
2. liquefy after a kind of ether according to claim 1 qi exhaustion C3 technique, it is characterized in that,
The tower top temperature of de-C3 tower is 39 DEG C, and column bottom temperature is 93 DEG C, and tower top pressure is 1.5MPa.
3. liquefy after a kind of ether according to claim 1 qi exhaustion C3 technique, it is characterized in that, containing propane 11% by weight percentage in C3 cut, and propylene 89%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721123.XA CN103740421B (en) | 2013-12-24 | 2013-12-24 | Technology for removing C3 in liquefied gas with ether removed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310721123.XA CN103740421B (en) | 2013-12-24 | 2013-12-24 | Technology for removing C3 in liquefied gas with ether removed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103740421A CN103740421A (en) | 2014-04-23 |
| CN103740421B true CN103740421B (en) | 2015-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310721123.XA Expired - Fee Related CN103740421B (en) | 2013-12-24 | 2013-12-24 | Technology for removing C3 in liquefied gas with ether removed |
Country Status (1)
| Country | Link |
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| CN (1) | CN103740421B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189529A (en) * | 1998-02-20 | 1998-08-05 | 徐华 | Hydrocarbon gas for welding cut |
| CN102438726A (en) * | 2009-03-25 | 2012-05-02 | 泰克尼普法国公司 | Method for processing a natural load gas for obtaining a natural processed gas and a reduction in c5+ hydrocarbons, and associated installation |
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2013
- 2013-12-24 CN CN201310721123.XA patent/CN103740421B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1189529A (en) * | 1998-02-20 | 1998-08-05 | 徐华 | Hydrocarbon gas for welding cut |
| CN102438726A (en) * | 2009-03-25 | 2012-05-02 | 泰克尼普法国公司 | Method for processing a natural load gas for obtaining a natural processed gas and a reduction in c5+ hydrocarbons, and associated installation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103740421A (en) | 2014-04-23 |
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Granted publication date: 20150429 Termination date: 20191224 |