CN105859520A - Butanol heavy component discharge method - Google Patents
Butanol heavy component discharge method Download PDFInfo
- Publication number
- CN105859520A CN105859520A CN201610272826.2A CN201610272826A CN105859520A CN 105859520 A CN105859520 A CN 105859520A CN 201610272826 A CN201610272826 A CN 201610272826A CN 105859520 A CN105859520 A CN 105859520A
- Authority
- CN
- China
- Prior art keywords
- butanol
- raffinate
- octanol
- octyl alconyl
- heavy constituent
- 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
-
- 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
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
-
- 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
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
- C07C29/80—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment by distillation
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
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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 discharge treatment of heavy components in a butyl-octyl alcohol project. The tower kettle extract of a butanol heavy component removal tower is connected to an octanol gas-phase hydrogenation evaporator so as to recycle active ingredients in raffinate so as to generate obvious economic benefits.
Description
Technical field
The present invention relates to chemical production field, it particularly relates to a kind of method of heavy constituent emission treatment in octyl alconyl project.
Background technology
Butanol and octanol 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
It is water white transparency, inflammable oily liquids with octanol, 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..Along with the development of China's plastics industry, market
To the requirement of octyl alconyl in cumulative year after year.
The evaporimeter of butyl octanol unit reactor, phase-splitter and weight-removing column etc. all have a small amount of effluent, and the mixed liquor of eliminating is referred to as
Octyl alconyl raffinate, is equivalent to about the 10% of octyl alconyl product quality, and wherein contains a large amount of valuable composition, but due to group
Becoming complexity, the past is many as fuel.
Summary of the invention
At the beginning of butyl octanol unit designs, butanol weight-removing column tower reactor extraction, as raffinate extraction, goes out as byproduct mixing octyl alconyl
Sell.After device stable operation a period of time, sampled analysis finds that butanol weight-removing column tower reactor extraction composition and octanol pre-rectifying tower enter
Material composition is basically identical, therefore to butyraldehyde, butanol weight-removing column tower reactor extraction adapter can be hydrogenated with evaporimeter, reclaims effective group in raffinate
Point.
The method of the present invention is as it is shown in figure 1, take over butanol weight-removing column tower reactor extraction to octanol gas phase hydrogenation evaporimeter.The method can
To reclaim the active ingredient in raffinate, produce the biggest economic benefit.
Accompanying drawing explanation
Fig. 1 butanol heavy constituent 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
Raffinate in certain chemical plant octyl alconyl project domestic, containing C4～16Various alcohol, aldehyde, olefine aldehydr, acetal, acid, ester
In compound and a small amount of water, up to tens of constituent.The concrete quality group of octyl alconyl raffinate becomes see table.
| Composition | Content (percetage by weight) |
| Isobutylaldehyde | 0.86% |
| Hutanal | 13.77% |
| Isobutanol | 1.11% |
| N-butanol | 15.69% |
| C5-7 | 5.34% |
| Octanol | 19.69% |
| Isooctanol | 0.49% |
| Octenal | 11.51% |
| Octanol isomers | 1.31% |
| C9-12 | 23.57% |
| C13+ | 4.06% |
| Water | 2.60% |
As can be seen from the above table, more than the 30% of octyl alconyl raffinate quality can be accounted for directly as the butanol of product, octanol, butyraldehyde,
Octenal accounts for more than 20% (can obtain butanol and octanol by hydrogenation) of raffinate quality.Wherein can be direct or indirect
The valuable constituent of flavor product accounts for more than 60%, can reclaim by being 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 fourth in raffinate
Alcohol overall recovery >=90%, octenal, octanol and overall recovery >=80% of octanol isomers, compared with domestic existing technique,
There is obvious economic benefit.
Claims (8)
1. the method for a butanol heavy constituent discharge, it is characterised in that butanol heavy constituent refers to the raffinate of extraction in octyl alconyl project.
2. the method for claim 1, is characterized by, described raffinate comes from the evaporimeter of reactor in octyl alconyl project, divides
Phase device and weight-removing column etc..
3. the method for claim 1, is characterized by, described raffinate is equivalent to about the 10% of octyl alconyl product quality.
4. the method for claim 1, is characterized by, containing C in described raffinate4～16Various alcohol, aldehyde, olefine aldehydr, acetal,
The compounds such as acid, ester and a small amount of water.
5. the method for claim 1, is characterized by, described raffinate composition and octanol pre-rectifying tower feed constituents are basically identical.
6. the method for claim 1, is characterized by, takes over butanol weight-removing column tower reactor extraction to octanol gas phase hydrogenation evaporimeter.
7. the method for claim 1, is characterized by, heavy constituent discharge method is as shown in Figure 1.
8. the method for claim 1, is characterized by, butyraldehyde and butanol overall recovery >=90% in raffinate, octenal, pungent
Alcohol and overall recovery >=80% of octanol isomers, compared with domestic existing technique, have obvious economic benefit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272826.2A CN105859520A (en) | 2016-04-28 | 2016-04-28 | Butanol heavy component discharge method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272826.2A CN105859520A (en) | 2016-04-28 | 2016-04-28 | Butanol heavy component discharge method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105859520A true CN105859520A (en) | 2016-08-17 |
Family
ID=56628557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610272826.2A Pending CN105859520A (en) | 2016-04-28 | 2016-04-28 | Butanol heavy component discharge method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105859520A (en) |
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 CN201610272826.2A patent/CN105859520A/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 |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160817 |