CN105820026A - Method for synthesizing tail gas pressure by pressurizing three air streams of polyhydric alcohol device to carbonyl - Google Patents
Method for synthesizing tail gas pressure by pressurizing three air streams of polyhydric alcohol device to carbonyl Download PDFInfo
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- CN105820026A CN105820026A CN201610272828.1A CN201610272828A CN105820026A CN 105820026 A CN105820026 A CN 105820026A CN 201610272828 A CN201610272828 A CN 201610272828A CN 105820026 A CN105820026 A CN 105820026A
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- Prior art keywords
- pressure
- tail gas
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- compressor
- strands
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/04—Ethylene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C11/00—Aliphatic unsaturated hydrocarbons
- C07C11/02—Alkenes
- C07C11/06—Propene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for synthesizing tail gas pressure by pressurizing three air streams in a butyl octanol project to carbonyl. According to the method, three low-pressure tail gas streams exhausted by butyl octanol are collected into a main pipe and flow through a low-pressure tail gas condenser and a gas-liquid separator, then liquid in the tail gas streams is condensed and separated, the tail gas streams are pressurized by virtue of a compressor and are collected into a recycling system after the pressure is exhausted to be equal to carbonyl synthesis tail gas pressure, and valuable components such as propylene and propane are recycled. The emission loads of the three air streams of the polyhydric alcohol device are instable, and the pressures are different, so pressure stabilization measures of low pressure nitrogen supplementing and high pressure evacuation are utilized before the air streams enter the compressor, and then the pressure of the low-pressure tail gas entering the compressor is stabilized at 42KPa-60KPa. By implementing the method, the pressure of the low-pressure tail gas is stabilized at 42KPa-60KPa, so that the safety, the stability and the long cycle of the compressor are guaranteed.
Description
Technical field
The present invention relates to chemical production field, it particularly relates to a kind of method that in octyl alconyl project, three strands of tail gas is pressurized to oxo process tail gas pressure.
Background technology
Butanol and capryl alcohol are owing to can produce by the method for hydroxyl synthesis in same set of device, therefore custom is referred to as octyl alconyl.Butanol and capryl alcohol are water white transparency, inflammable oily liquids, have special odor, can form azeotropic mixture with water and multiple compounds, all have moderate toxicity.Octyl alconyl is the important source material of synthesis fine chemical product, mainly for the production of plasticizer, solvent, dehydrant, defoamer, dispersant, flotation agent, petroleum additive and synthetic perfume etc..
Butyl octanol unit production process can produce a number of residual liquid and periodic off-gases.Owing to butyl octanol unit low-pressure tail gas organic concentration is high, flow is big, pressure is low, pressurizes firstly the need of with tail-gas compressor before tail gas recycle, makes up to certain pressure and reclaim again.
Summary of the invention
For above-mentioned deficiency, the method that the present invention provides is as follows:
Three strands of low-pressure tail gas of octyl alconyl discharge converge into a house steward, first pass around low-pressure tail gas condenser and gas-liquid separator, after condensation separation falls liquid therein, tail gas pressurizes through compressor, discharge pressure to oxo process tail gas pressure identical after import recovery system, carry out the recovery of the useful value component such as propylene and propane.Owing to the discharge capacity of three strands of low-pressure tail gas of butyl octanol unit is unstable, pressure is inconsistent, use low pressure to mend nitrogen and high pressure emptying voltage stabilizing measure before entering compressor, make low-pressure tail gas stablize and enter compressor 42～60KPa.
After this method enforcement, low-pressure tail gas pressure stability is 42～60KPa, and safe and stable, the long period of compressor is played guaranteeing role.
Accompanying drawing explanation
Tri-strands of tail gas pressure method general flow charts of Fig. 1
Detailed description of the invention
With embodiment, the technique of the present invention is further elaborated below in conjunction with the accompanying drawings.
Embodiment 1
As shown in Figure 1, three strands of low-pressure tail gas of octyl alconyl discharge converge into a house steward, first pass around low-pressure tail gas condenser and gas-liquid separator, after condensation separation falls liquid therein, tail gas pressurizes through compressor, discharge pressure to oxo process tail gas pressure identical after import recovery system, carry out the recovery of the useful value component such as propylene and propane.Owing to the discharge capacity of three strands of low-pressure tail gas of butyl octanol unit is unstable, pressure is inconsistent, use low pressure to mend nitrogen and high pressure emptying voltage stabilizing measure before entering compressor, make low-pressure tail gas stablize and enter compressor at 42KPa.
Embodiment 2
As shown in Figure 1, three strands of low-pressure tail gas of octyl alconyl discharge converge into a house steward, first pass around low-pressure tail gas condenser and gas-liquid separator, after condensation separation falls liquid therein, tail gas pressurizes through compressor, discharge pressure to oxo process tail gas pressure identical after import recovery system, carry out the recovery of the useful value component such as propylene and propane.Owing to the discharge capacity of three strands of low-pressure tail gas of butyl octanol unit is unstable, pressure is inconsistent, use low pressure to mend nitrogen and high pressure emptying voltage stabilizing measure before entering compressor, make low-pressure tail gas stablize and enter compressor at 50KPa.
Embodiment 3
As shown in Figure 1, three strands of low-pressure tail gas of octyl alconyl discharge converge into a house steward, first pass around low-pressure tail gas condenser and gas-liquid separator, after condensation separation falls liquid therein, tail gas pressurizes through compressor, discharge pressure to oxo process tail gas pressure identical after import recovery system, carry out the recovery of the useful value component such as propylene and propane.Owing to the discharge capacity of three strands of low-pressure tail gas of butyl octanol unit is unstable, pressure is inconsistent, use low pressure to mend nitrogen and high pressure emptying voltage stabilizing measure before entering compressor, make low-pressure tail gas stablize and enter compressor at 60KPa.
Claims (8)
1. the method that three strands of tail gas is pressurized to oxo process tail gas pressure, it is characterised in that the method low-pressure tail gas be applicable to octyl alconyl project.
2. the method for claim 1, is characterized by, it is necessary first to three strands of low-pressure tail gas are converged into a house steward.
3. the method for claim 1, is characterized by, second step needs through low-pressure tail gas condenser and gas-liquid separator, and condensation separation falls liquid therein.
4. the method for claim 1, is characterized by, the 3rd step tail gas pressurizes through compressor.
5. method as claimed in claim 4, is characterized by, tail gas is forced into identical with oxo process tail gas pressure.
6. the method for claim 1, is characterized by, the 4th step imports recovery system, carries out the recovery of the useful value component such as propylene and propane.
7. the method for claim 1, is characterized by, the discharge capacity of three strands of low-pressure tail gas is unstable, pressure is inconsistent, uses low pressure to mend nitrogen and high pressure emptying voltage stabilizing measure before entering compressor.
8. the method for claim 1, is characterized by, low-pressure tail gas is stable enters compressor 42～60KPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272828.1A CN105820026A (en) | 2016-04-28 | 2016-04-28 | Method for synthesizing tail gas pressure by pressurizing three air streams of polyhydric alcohol device to carbonyl |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272828.1A CN105820026A (en) | 2016-04-28 | 2016-04-28 | Method for synthesizing tail gas pressure by pressurizing three air streams of polyhydric alcohol device to carbonyl |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105820026A true CN105820026A (en) | 2016-08-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610272828.1A Pending CN105820026A (en) | 2016-04-28 | 2016-04-28 | Method for synthesizing tail gas pressure by pressurizing three air streams of polyhydric alcohol device to carbonyl |
Country Status (1)
| Country | Link |
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| CN (1) | CN105820026A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973846A (en) * | 2010-11-03 | 2011-02-16 | 淄博诺奥化工有限公司 | Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material |
| CN104610032A (en) * | 2014-12-26 | 2015-05-13 | 浙江大学 | Butyl octyl alcohol tail gas recycling device and method |
-
2016
- 2016-04-28 CN CN201610272828.1A patent/CN105820026A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973846A (en) * | 2010-11-03 | 2011-02-16 | 淄博诺奥化工有限公司 | Method for producing mixed butanol and coarse octanol by using waste liquid discharged from octanol device as raw material |
| CN104610032A (en) * | 2014-12-26 | 2015-05-13 | 浙江大学 | Butyl octyl alcohol tail gas recycling device and method |
Non-Patent Citations (2)
| Title |
|---|
| 张善全: "回收丁辛醇装置驰放气中丙烯和丙烷的工艺设计", 《内蒙古石油化工》 * |
| 赵安仁: "丁辛醇生产残液和弛放气的综合利用", 《化工环保》 * |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |