CN105820037A - Method for discharging octanol light components - Google Patents
Method for discharging octanol light components Download PDFInfo
- Publication number
- CN105820037A CN105820037A CN201610272124.4A CN201610272124A CN105820037A CN 105820037 A CN105820037 A CN 105820037A CN 201610272124 A CN201610272124 A CN 201610272124A CN 105820037 A CN105820037 A CN 105820037A
- Authority
- CN
- China
- Prior art keywords
- residual liquid
- capryl alcohol
- butyraldehyde
- octyl alconyl
- light component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/14—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
- C07C29/141—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases
-
- 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
- C07C29/17—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds
- C07C29/175—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrogenation of carbon-to-carbon double or triple bonds with simultaneous reduction of an oxo group
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a method for discharging and treating light components in a butyl octanol project. The method is disclosed as Figure 1 in the specification. According to the method, octanol is recovered from the top of a pre-rectification tower and connected to a butyl aldehyde hydrogenation evaporator. The method can recover effective components in the residual liquid, thereby generating great economic benefits.
Description
Technical field
The present invention relates to chemical production field, it particularly relates to a kind of method of light component emission treatment in octyl alconyl project.
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..Along with the development of China's plastics industry, market to the requirement of octyl alconyl in cumulative year after year.
The vaporizer of butyl octanol unit reactor, phase separator, rectifying column and weight-removing column etc. all have a small amount of ejection, the mixed liquor got rid of is referred to as octyl alconyl residual liquid, be equivalent to about the 10% of octyl alconyl product quality, and wherein contain a large amount of valuable composition, but due to composition complexity, the past is many as fuel.
Summary of the invention
At the beginning of butyl octanol unit designs, capryl alcohol pre-rectifying tower overhead extraction, as residual liquid extraction, is sold as side-product mixing octyl alconyl.After device stable operation a period of time, sampled analysis finds that capryl alcohol pre-rectifying tower overhead extraction composition and butyraldehyde hydrogenation evaporation feed liquor composition are basically identical, therefore the adapter of capryl alcohol pre-rectifying tower overhead extraction can be hydrogenated with vaporizer to butyraldehyde, reclaim the active component in residual liquid.
The method of the present invention is as it is shown in figure 1, be hydrogenated with vaporizer by the adapter of capryl alcohol pre-rectifying tower overhead extraction to butyraldehyde.The method can reclaim the effective ingredient in residual liquid, produces the biggest economic benefit.
Accompanying drawing explanation
Fig. 1 capryl alcohol light component emission treatment schematic diagram
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
Residual liquid in certain chemical plant octyl alconyl project domestic, containing C4～16Various alcohol, aldehyde, olefine aldehydr, acetal, acid, the compound such as ester and a small amount of water, up to tens of constituent.The concrete quality group of octyl alconyl residual liquid becomes see table.
| Composition | Content (percetage by weight) |
| Isobutylaldehyde | 0.86% |
| Hutanal | 13.77% |
| Isobutanol | 1.11% |
| N-butyl alcohol | 15.69% |
| C5-7 | 5.34% |
| Capryl alcohol | 19.69% |
| Isooctanol | 0.49% |
| Octenal | 11.51% |
| Capryl alcohol isomer | 1.31% |
| C9-12 | 23.57% |
| C13+ | 4.06% |
| Water | 2.60% |
As can be seen from the above table, can account for more than the 30% of octyl alconyl residual liquid quality directly as the butanol of product, capryl alcohol, butyraldehyde, octenal account for more than 20% (can obtain butanol and capryl alcohol by hydrogenation) of residual liquid quality.Wherein the valuable constituent of direct or indirect flavor product can account for more than 60%, can reclaim by be passed directly into hydrogenation reactor after extraction completely, change into product.
Embodiment 2
The octyl alconyl project in certain chemical plant domestic, have employed the heavy constituent recovery method that the present invention provides, butyraldehyde and butanol overall recovery >=90% in residual liquid, octenal, capryl alcohol and overall recovery >=80% of capryl alcohol isomer, compared with domestic existing technique, there is obvious economic benefit.
Claims (8)
1. the method for a capryl alcohol light component discharge, it is characterised in that the light component of capryl alcohol refers to the residual liquid of extraction in octyl alconyl project.
2. the method for claim 1, is characterized by, described residual liquid comes from the capryl alcohol pre-rectifying tower in octyl alconyl project.
3. the method for claim 1, is characterized by, described residual liquid is equivalent to about the 10% of octyl alconyl product quality.
4. the method for claim 1, is characterized by, containing C in described residual liquid4～16Various alcohol, aldehyde, olefine aldehydr, acetal, acid, the compound such as ester and a small amount of water.
5. the method for claim 1, is characterized by, described residual liquid composition and butyraldehyde hydrogenation evaporation feed liquor composition are basically identical.
6. the method for claim 1, is characterized by, to butyraldehyde, the adapter of capryl alcohol pre-rectifying tower overhead extraction is hydrogenated with vaporizer.
7. the method for claim 1, is characterized by, light component discharge method is as shown in Figure 1.
8. the method for claim 1, is characterized by, butyraldehyde and butanol overall recovery >=90% in residual liquid, and octenal, capryl alcohol and overall recovery >=80% of capryl alcohol isomer, compared with domestic existing technique, have obvious economic benefit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272124.4A CN105820037A (en) | 2016-04-28 | 2016-04-28 | Method for discharging octanol light components |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272124.4A CN105820037A (en) | 2016-04-28 | 2016-04-28 | Method for discharging octanol light components |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105820037A true CN105820037A (en) | 2016-08-03 |
Family
ID=56528810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610272124.4A Pending CN105820037A (en) | 2016-04-28 | 2016-04-28 | Method for discharging octanol light components |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105820037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11312674B2 (en) | 2018-04-13 | 2022-04-26 | Johnson Matthey Davy Technologies Limited | Process for making a feed of normal butanol, iso-butanol and 2-alkyl alkanol |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973845A (en) * | 2010-11-03 | 2011-02-16 | 淄博诺奥化工有限公司 | Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol 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 |
| CN105218307A (en) * | 2015-09-15 | 2016-01-06 | 南京长江江宇石化有限公司 | Octyl alconyl produce in light constituent residual night aldehydes add hydrogen retrieval separation method |
-
2016
- 2016-04-28 CN CN201610272124.4A patent/CN105820037A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101973845A (en) * | 2010-11-03 | 2011-02-16 | 淄博诺奥化工有限公司 | Method for extracting butyraldehyde and butanol mixture and octenal and octanol mixture from waste liquid discharged by butanol-octanol 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 |
| CN105218307A (en) * | 2015-09-15 | 2016-01-06 | 南京长江江宇石化有限公司 | Octyl alconyl produce in light constituent residual night aldehydes add hydrogen retrieval separation method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11312674B2 (en) | 2018-04-13 | 2022-04-26 | Johnson Matthey Davy Technologies Limited | Process for making a feed of normal butanol, iso-butanol and 2-alkyl alkanol |
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| 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 |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |