CN101973845B - Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol device - Google Patents
Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol device Download PDFInfo
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- CN101973845B CN101973845B CN 201010530101 CN201010530101A CN101973845B CN 101973845 B CN101973845 B CN 101973845B CN 201010530101 CN201010530101 CN 201010530101 CN 201010530101 A CN201010530101 A CN 201010530101A CN 101973845 B CN101973845 B CN 101973845B
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Abstract
The invention relates to a method for extracting a butyraldehyde and butanol mixture and an octenal and octanol mixture from waste liquid discharged by a butanol-octanol device, belonging to preparation methods of acyclic alcohol and acyclic aldehydes, particularly relating to the resource utilization and the treatment of the waste liquid discharged by the butanol-octanol device. The method is characterized by using a C4 fractionating tower system and a C8 fractionating tower system, wherein the butyraldehyde and butanol mixture is distilled off at the top of the C4 fractionating tower, and the octenal and octanol mixture is distilled off at the top of the C8 fractionating tower. The invention provides the method for extracting the butyraldehyde and butanol mixture and the octenal and octanol mixture from the waste liquid discharged by the butanol-octanol device, and the method lightens the wastewater treatment load of the butanol-octanol device, has the advantages of simple treatment process, equipment investment saving and low operation cost and carries out the resource treatment of the waste liquid discharged by the butanol-octanol device so as to fully and effectively utilize the byproducts, such as butyraldehyde, butanol, octenal and octanol, The invention realizes the resource treatment of the waste liquid discharged by the butanol-octanol device.
Description
Technical field
The present invention is a kind of method of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging.The preparation method who belongs to monohydroxylic acyclic alcohols and acyclic monoaldehyde.The recycling that is particularly related to the waste liquid of butyl octanol unit discharging is handled.
Background technology
Fourth octanol low pressure carbonylic synthesis technology is that propylene is in the presence of rhodium phosphine complex catalyst, with synthetic gas (CO+H
2) reaction generation butyraldehyde-n and isobutyric aldehyde.Condensation reaction takes place and generates octenal through with after isobutyric aldehyde separates in butyraldehyde-n under the catalysis of sodium hydroxide solution, octenal hydrogenation under the effect of copper catalyst generates octanol (being 2-Ethylhexyl Alcohol); Not separated butyraldehyde-n and the direct hydrogenating reduction of mixture of isobutyraldehyde then generate propyl carbinol and isopropylcarbinol.
In a kind of waste liquid of production equipment discharging of fourth octanol, contain positive isobutyric aldehyde 3%-20%, positive isopropylcarbinol 10%-40%, C
5-C
7Contain 1%-5%, C
810%-40%, C
12-C
16Contain 15%-60%, water 0.5%-10% is valuable available stock.But because the component complexity, to its processing, the comprehensive utilization technique difficulty is bigger, and present treatment process mainly is directly discharging or only makes burning disposal, has namely wasted the energy, has polluted environment and water source again.Waste liquid with the butyl octanol unit discharging is raw material, extracts butyraldehyde and butanols mixture and octenal, octanol mixture, and its technology of carrying out the recycling treatment utilization is not also seen as yet.
Summary of the invention
The objective of the invention is to avoid above-mentioned weak point of the prior art, and provide a kind of both save energy to protect the method for from the waste liquid of butyl octanol unit discharging, extracting butyraldehyde and butanols mixture and octenal and octanol mixture of environment.
The present invention also aims to by the recycling to the waste liquid of butyl octanol unit discharging, alleviate the load with the supporting Waste Water Treatment of butyl octanol unit greatly, reduce cost for wastewater treatment, improve the water-quality guideline after handling.
Purpose of the present invention can reach by following measure:
The method of from the waste liquid of butyl octanol unit discharging, extracting butyraldehyde and butanols mixture and octenal and octanol mixture of the present invention, it is characterized in that comprising carbon four fractionating column systems and carbon eight fractionating column systems, wherein, carbon four fractionator overhead distillate butyraldehyde and butanols mixture, and carbon eight fractionator overhead distillate octenal and octanol mixture.
Butyraldehyde and butanols mixture and octenal and octanol mixture in the waste liquid of butyl octanol unit discharging have been extracted by fractionation by distillation, removed in the waste liquid all detrimental impurity in the fourth octanol technological process, the raw material that is used for hydrogenation workshop section that can be whole, safe, simultaneously, alleviated the load of follow-up water treatment greatly.
The method of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging of the present invention is characterized in that comprising following operation steps:
The waste liquid of butyl octanol unit discharging is at first by carbon four fractionating column systems, the butyraldehyde component and the butanols component that wherein contain are come out from carbon four column overhead fractionation, component enters carbon eight separation column devices at the bottom of carbon four Tatas, and carbon eight component octenals and the octanol that wherein contains come out from carbon eight cat head fractionation; The butyraldehyde that fractionation is come out and butanols are stored in butyraldehyde and butanols mixture storage tank, and octenal and octanol are stored in octenal and octanol mixture storage tank.
The method of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging of the present invention is characterized in that the process conditions of described operation steps is as follows:
1.. each constituent mass per-cent of waste liquid of butyl octanol unit discharging: positive isobutyric aldehyde 3%-20%, positive isopropylcarbinol 10%-40%, C
5-C
7Contain 1%-5%, carbon eight component 10%-40%, C
12-C
1615%-60%, water 0.5%-10%;
2.. the operational condition of carbon four towers: 50 ℃-120 ℃ of tower top temperatures, 110 ℃-175 ℃ of column bottom temperatures; Tower top pressure is-0.05Mpa--0.1Mpa.
3.. the operational condition of carbon eight towers: 120 ℃-150 ℃ of tower top temperatures, 175 ℃-195 ℃ of column bottom temperatures, tower top pressure is-0.05Mpa--0.1Mpa.
The purposes of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging of the present invention is characterized in that:
A. butyraldehyde and butanols mixture directly all for the butyraldehyde hydrogenating reduction device of fourth octanol system, change into into propyl carbinol and isopropylcarbinol without separating.
B. octenal and octanol mixture are without separating, and directly all for the octenal hydrogenating reduction device of fourth octanol system, octenal is hydrogenating reduction generation octanol (being 2-Ethylhexyl Alcohol) under the effect of copper catalyst;
C extracts butyraldehyde and butanols mixture and octenal and the octanol mixture that obtains, and all can be used as the by-product sale of butyl octanol unit.
The disclosed technical scheme of method of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging of the present invention has following positively effect compared to existing technology:
1. a kind of butyl octanol unit wastewater treatment load of alleviating is provided, and treatment process is simple, low equipment investment, running cost are low; Waste liquid to butyl octanol unit discharging carries out recycling treatment, the method for extracting butyraldehyde and butanols mixture and octenal, octanol mixture from the waste liquid of butyl octanol unit discharging that makes that butyraldehyde, butanols, octenal and the octanol of by-product be able to fully effectively utilize.
2. butyraldehyde and butanols mixture and octenal and octanol mixture in the waste liquid of butyl octanol unit discharging have been extracted by fractionation by distillation, removed in the waste liquid all detrimental impurity in the fourth octanol technological process, the raw material that is used for hydrogenation workshop section that can be whole, safe, simultaneously, alleviated the load of follow-up water treatment greatly.
3. realized the waste liquid of butyl octanol unit discharging is carried out recycling treatment, made butyraldehyde, butanols, octenal and the octanol of by-product be able to fully effectively obtain utilize.
4. simple, the low equipment investment for the treatment of process, running cost are low.
5. can be used as raw material and be directly used in fourth octanol production equipment, also can be used as byproduct to market sale, use flexibly.
Description of drawings
Fig. 1 utilizes method of the present invention this extraction butyraldehyde and butanols mixture and octenal and octanol mixture process schematic flow sheet from the waste liquid of butyl octanol unit discharging
Embodiment
The present invention will now be further detailed embodiment:
Embodiment 1
The waste liquid of butyl octanol unit discharging is at first by carbon four fractionating column systems, the butyraldehyde component and the butanols component that wherein contain are come out from carbon four column overhead fractionation, component enters carbon eight separation column devices at the bottom of carbon four Tatas, and carbon eight component octenals and the octanol that wherein contains come out from carbon eight cat head fractionation; The butyraldehyde that fractionation is come out and butanols are stored in butyraldehyde and butanols mixture storage tank, and octenal and octanol are stored in octenal and octanol mixture storage tank.
The present invention is described in detail by reference to the accompanying drawings
The butanol and octanol waste liquid raw material is heated to 100 ℃-120 ℃ through feed preheater E-101 and enters carbon four tower C-101, the heat that the material evaporation needs in the tower, E-103 provides by the tower reactor reboiler, tower top temperature control is at 50 ℃-120 ℃, by the control of trim the top of column amount, 110 ℃-175 ℃ of column bottom temperatures are controlled by the heating steam amount, tower top pressure is-0.05Mpa--0.1Mpa that the vacuum of tower is provided by vapor jet pump J-101.Cat head rising steam enters among the return tank V-101 after overhead condenser E-102 condensation cooling, and P-101A/B partly returns stream through backflow extraction pump, and part extraction C-4-fraction enters butyraldehyde and butanols mixture storage tank;
Carbon four tower tower bottomss extraction pump P-102A/B at the bottom of tower sends into carbon eight tower C-102 middle part opening for feed, the heat that the material evaporation needs in the tower, E-105 provides by the tower reactor reboiler, tower top temperature control is at 120 ℃-150 ℃, by the control of trim the top of column amount, 175 ℃-195 ℃ of column bottom temperatures are controlled by the heating steam amount, tower top pressure is-0.05Mpa--0.1Mpa that the vacuum of tower is provided by vapor jet pump J-102.Cat head rising steam enters among the return tank V-102 after overhead condenser E-104 condensation cooling, partly returns stream through backflow extraction pump P-104A/B then, and part extraction octenal cut and octanol cut enter octenal and octanol mixture storage tank.
Claims (1)
1. from the waste liquid of butyl octanol unit discharging, extract the method for butyraldehyde and butanols mixture and octenal and octanol mixture,
It is characterized in that:
In the waste liquid of described butyl octanol unit discharging, each constituent mass per-cent: positive isobutyric aldehyde 3%-20%, positive isopropylcarbinol 10%-40%, C
5-C
7Contain 1%-5%, carbon eight components 10%-40%, C
12-C
1615%-60%, water 0.5%-10%;
The described method of extracting butyraldehyde and butanols mixture and octenal and octanol mixture from the waste liquid of butyl octanol unit discharging comprises carbon four fractionating column systems and carbon eight fractionating column systems; The concrete operations step is as follows:
1.. carbon four fractionating column systems
The waste liquid of described butyl octanol unit discharging is at first by carbon four fractionating column systems, the butyraldehyde component and the butanols component that wherein contain are come out from carbon four column overhead fractionation, be stored in butyraldehyde and butanols mixture storage tank, component enters carbon eight fractionating column systems at the bottom of carbon four Tatas, and processing condition are as follows;
50 ℃-120 ℃ of tower top temperatures
110 ℃-175 ℃ of column bottom temperatures
Tower top pressure is-0.05MPa--0.1MPa
2.. carbon eight fractionating column systems
After butyraldehyde component in the waste liquid that 1. step discharges described butyl octanol unit and butanols component are come out from carbon four column overhead fractionation, component enters carbon eight fractionating column systems at the bottom of carbon four Tatas, in carbon eight fractionating column systems, carbon eight component octenals and the octanol that will wherein contain come out from carbon eight cat head fractionation again, the octenal that fractionation is come out and octanol mixture are stored in octenal and octanol mixture storage tank; Processing condition are as follows;
120 ℃-150 ℃ of tower top temperatures
175 ℃-195 ℃ of column bottom temperatures
Tower top pressure is-0.05MPa--0.1MPa.
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|---|---|---|---|
| CN 201010530101 CN101973845B (en) | 2010-11-03 | 2010-11-03 | Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol device |
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| CN 201010530101 CN101973845B (en) | 2010-11-03 | 2010-11-03 | Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol device |
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| CN101973845A CN101973845A (en) | 2011-02-16 |
| CN101973845B true CN101973845B (en) | 2013-08-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103342625B (en) * | 2013-07-12 | 2015-07-08 | 上海东化环境工程有限公司 | Treatment process of 2-ethyl hexanol liquid waste |
| CN104447194A (en) * | 2014-11-11 | 2015-03-25 | 中国海洋石油总公司 | Method for processing butyl-octyl alcohol residual liquid |
| CN106187694B (en) * | 2015-04-29 | 2019-02-19 | 中国石油化工股份有限公司 | Recycle the refining methd of butanol and octanol from butanol and octanol waste liquid with hydrogenation reaction by cracking |
| CN104961624B (en) * | 2015-06-02 | 2016-08-24 | 天津大学 | Octyl alconyl produces the recoverying and utilizing method of waste liquid |
| CN105237347A (en) * | 2015-09-15 | 2016-01-13 | 南京长江江宇石化有限公司 | Recovery and separation method of light component raffinate in carbonylation production process of butanol-octanol |
| CN105237350B (en) * | 2015-09-21 | 2017-03-22 | 天津渤化永利化工股份有限公司 | Butyl alcohol and 2-ethyl hexanol production equipment industrial waste comprehensive utilization method |
| CN105820037A (en) * | 2016-04-28 | 2016-08-03 | 张家港市华昌新材料科技有限公司 | Method for discharging octanol light components |
| CN105859520A (en) * | 2016-04-28 | 2016-08-17 | 张家港市华昌新材料科技有限公司 | Butanol heavy component discharge method |
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Inventor after: Cui Kexian Inventor after: Jiu Jinshuai Inventor after: Zhou Xiaoqin Inventor after: Wang Anjun Inventor after: Li Rende Inventor after: Zhou Liliang Inventor after: Dong Jingjun Inventor after: Lin Rongheng Inventor after: Sun Guiqi Inventor after: Song Xueyang Inventor after: Yang Zhen Inventor before: Cui Kexian Inventor before: Wang Anjun Inventor before: Li Rende Inventor before: Zhou Liliang Inventor before: Dong Jingjun Inventor before: Lin Rongheng Inventor before: Sun Guiqi Inventor before: Song Xueyang |
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Address after: 255400 Xin Hua Road, Linzi District, Zibo, Shandong Province, No. 2727 Patentee after: Zibo Nuoao chemical Limited by Share Ltd Address before: 255400 Xinhua Road, Linzi District, Zibo, Shandong Province, No. 17 Patentee before: Zibo Ruoao Chemical Co., Ltd. |