CN108048224A - Aliphatic acid produces the device and method of aliphatic ester - Google Patents
Aliphatic acid produces the device and method of aliphatic ester Download PDFInfo
- Publication number
- CN108048224A CN108048224A CN201810072707.1A CN201810072707A CN108048224A CN 108048224 A CN108048224 A CN 108048224A CN 201810072707 A CN201810072707 A CN 201810072707A CN 108048224 A CN108048224 A CN 108048224A
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- CN
- China
- Prior art keywords
- type reactor
- coil
- storage tank
- aliphatic
- low
- 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
Links
- 239000002253 acid Substances 0.000 title claims abstract description 31
- 125000001931 aliphatic group Chemical group 0.000 title claims abstract description 23
- -1 aliphatic ester Chemical class 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 claims abstract description 10
- 235000019441 ethanol Nutrition 0.000 claims description 34
- 238000003860 storage Methods 0.000 claims description 23
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 17
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002351 wastewater Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 238000004064 recycling Methods 0.000 abstract 1
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000011973 solid acid Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000007522 mineralic acids Chemical class 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11C—FATTY ACIDS FROM FATS, OILS OR WAXES; CANDLES; FATS, OILS OR FATTY ACIDS BY CHEMICAL MODIFICATION OF FATS, OILS, OR FATTY ACIDS OBTAINED THEREFROM
- C11C3/00—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom
- C11C3/02—Fats, oils, or fatty acids by chemical modification of fats, oils, or fatty acids obtained therefrom by esterification of fatty acids with glycerol
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses the apparatus and method of aliphatic acid production aliphatic ester, the device mainly relies on coil-type reactor, the feed inlet of aliphatic acid, the low-carbon alcohols of recycling and fresh low-carbon alcohols is not set up in coil-type reactor upper, middle and lower three parts, the technique relies on automatic countercurrent reaction, and reaction is promoted constantly to develop to positive reaction direction.The technique can realize that the aliphatic ester purity of reactor bottom is more than 99.8%, and remove deacidification process from.
Description
Technical field
Aliphatic ester is prepared the present invention relates to the Preparation equipment and preparation method of aliphatic ester more particularly to using aliphatic acid
Device and method.
Background technology
Using aliphatic acid as raw material and low-carbon alcohols（Methanol, ethyl alcohol）Reaction can prepare corresponding aliphatic ester, and general technology needs
Catalyst is made with inorganic acid or solid acid, catalyst is made to serious corrosion of equipment with inorganic acid, to the requirement of equipment corrosion resistance
Height, the acid waste water processing cost of generation are high.Catalyst is made with solid acid, solid acid is of high cost, and catalyst is easily poisoned, often again
Activity significantly declines after raw difficult or regeneration, and synthesis is of high cost.And esterification is balanced reaction, generally requires low-carbon alcohols
Need to be significantly excessive, the low carbon alcohol solution of substantial amounts of low concentration can be generated in reaction process, cost recovery is high, and the fat generated
Fat acid esters purity is relatively low（Less than 98%）, containing 2% unreacted aliphatic acid, also need to add deacidification process together.
The content of the invention
It is contemplated that designing a kind of device and technique of the esterification of aliphatic acid continuous high temperature, need not use in the art
Catalyst, not etching apparatus, reacting the water of generation can be removed by rectifying, can be re-used after the purification of excessive low-carbon alcohols.
The device of the aliphatic acid production aliphatic ester of the present invention, including fatty acid storage tank, low-carbon alcohols storage tank, rectifying column and storage
Batch can, it is characterised in that：By the upper end of pipeline terminal pad tube-type reactor, the low-carbon alcohols storage tank leads to the fat acid storage tank
The lower end of piping terminal pad tube-type reactor, the upper end of the rectifying column by the middle part of pipeline terminal pad tube-type reactor,
By the upper end of pipeline terminal pad tube-type reactor, the lower end of the rectifying column is connected by pipeline gives up at the middle part of the rectifying column
Pond, the lower end of the coil-type reactor are connected to storage tank by pipeline, are provided on the outside of the coil-type reactor
Heater.
Said program is further improved scheme, between the fat acid storage tank, low-carbon alcohols storage tank and coil-type reactor
Pipeline on be provided with pump.
Said program is further improved scheme, and the pipeline is stainless steel pipes.
The method of aliphatic acid of the present invention production aliphatic ester, specific method are from the top of coil-type reactor by aliphatic acid
Charging, low-carbon alcohols are fed from the lower part of coil-type reactor, coil-type reactor are heated using heater, it is ensured that temperature exists
150 DEG C or more, the mixed vapour that coil-type reactor head is discharged is introduced in the middle part of rectifying column, and low-carbon alcohols at the top of rectifying column are steamed
The middle part of coil-type reactor is introduced to after vapour condensation, the water at rectifying column bottom is drained into wastewater disposal basin, by coil-type reactor bottom
Aliphatic ester drain into storage tank.
Low-carbon alcohols described in the above method are methanol or ethyl alcohol.
In the above method, coil-type temperature of reactor is controlled at 165 DEG C.
The apparatus and method of aliphatic acid production aliphatic ester of the present invention have the following advantages that：Pyroreaction is without the use of catalysis
Agent, automatic countercurrent reaction promote reaction constantly to develop to positive reaction direction, and low-carbon alcohols one enter the i.e. heated vaporization of reactor, no
Mechanical agitation is needed, the heat that the mixed vapour of reactor head carries separates water, alcohol extracting heating load for rectifying column enough, and single is not
The recyclable reuse of alcohol of reaction, the dosage of alcohol is not required to excess, not only cost-effective, but also reduces waste water COD total amount, saves
Sewage disposal expense.Due to the backwash effect formed in reactor, as aliphatic acid moves down, reaction balance is always towards just
The Direction of Reaction moves, and the alcohol of fresh supplemented（It is not aqueous）It is fed from middle and lower part, ensure that reaction is thorough, reactor bottom
Aliphatic ester purity is high（More than 99.8%）, deacidification process can be removed from.
Description of the drawings
Fig. 1 is preparation facilities overall structure diagram of the present invention.
Specific embodiment
Referring to Fig. 1, a kind of embodiment of the device of aliphatic acid production aliphatic ester of the present invention, fatty acid storage tank 1 passes through
Pump and stainless steel pipes are connected to the top of coil-type reactor 6, and low-carbon alcohols storage tank 2 is connected to disk by pump and stainless steel pipes
The lower part of tube-type reactor 6；The middle part of rectifying column 5 passes through the top of stainless steel pipes terminal pad tube-type reactor 6, rectifying column 5
Top by the middle part of stainless steel pipes terminal pad tube-type reactor 6, the bottom of rectifying column 5 is connected useless by stainless steel pipes
Pond 4；The bottom of coil-type reactor 6 connects storage tank 3 by stainless steel pipes；The outside of coil-type reactor 6 is provided with
Heater 7.
With reference to above-mentioned device, the concrete technology method of aliphatic acid production aliphatic ester of the present invention, equipment body is coil pipe
Type reactor 6 and the heater 7 on the outside of it, coil-type reactor 6 are spiral structure.By the fat in fatty acid storage tank 1
Acid is injected into 6 top of coil-type reactor by pump and feeds；It is specially methanol or second by fresh low-carbon alcohols in low-carbon alcohols storage tank
Alcohol is injected into 6 lower part of coil-type reactor by pump and is used as supplement charging, the mixed vapour at 6 top of coil-type reactor is drawn
Enter 5 middle part of rectifying column, will be fed through the low-carbon alcohols that rectifying column 5 recycles from 6 middle part of coil-type reactor；7 temperature of heater is kept
At 150 DEG C or more, most preferably 165 DEG C or so, it is ensured that 6 temperature of coil-type reactor is maintained at 150 DEG C or more.Keep this temperature
One is high temperature improves esterification speed, you being not required to catalyst has enough reaction speeds；Secondly low-carbon alcohols one enter
Coil-type reactor 6 is vaporized and moved upward, and aliphatic acid keeps liquid then to move downward since boiling point is high, and the two is transported in adverse current
Haptoreaction in dynamic, the water of generation move upwards after also vaporizing.The aliphatic ester that reaction generates then flows downward, from bottom discharge
Mouth discharge.The mixed vapour at 6 top of coil-type reactor is introduced into 5 middle part of rectifying column, 5 bottom of rectifying column discharge reaction product
Water, rectifying column 5 are pushed up to be back to after low carbon alcohol vapor condenses in the middle part of coil-type reactor 6 and are continuing with.
It is not suitable for the boiling point alcohols higher than water in this programme, therefore low-carbon alcohols are preferred using methanol or ethyl alcohol.
Claims (6)
1. aliphatic acid produces the device of aliphatic ester, special including fatty acid storage tank, low-carbon alcohols storage tank, rectifying column and storage tank
Sign is：By the upper end of pipeline terminal pad tube-type reactor, the low-carbon alcohols storage tank is connected the fat acid storage tank by pipeline
The lower end of coil-type reactor is connect, the upper end of the rectifying column passes through the middle part of pipeline terminal pad tube-type reactor, the rectifying
By the upper end of pipeline terminal pad tube-type reactor, the lower end of the rectifying column connects wastewater disposal basin, institute by pipeline at the middle part of tower
The lower end for stating coil-type reactor is connected to storage tank by pipeline, and the outside of the coil-type reactor sets having heaters.
2. the device of aliphatic acid production aliphatic ester as described in claim 1, it is characterised in that：The fat acid storage tank, low
Pump is provided on pipeline between carbon alcohol storage tank and coil-type reactor.
3. the device of aliphatic acid production aliphatic ester as claimed in claim 1 or 2, it is characterised in that：The pipeline is not
Become rusty steel conduit.
4. the method that aliphatic acid produces aliphatic ester, it is characterised in that：Aliphatic acid is fed from the top of coil-type reactor, it will
Low-carbon alcohols from the lower part of coil-type reactor feed, using heater to coil-type reactor heat, it is ensured that temperature 150 DEG C with
On, the mixed vapour that coil-type reactor head is discharged is introduced in the middle part of rectifying column, and low carbon alcohol vapor at the top of rectifying column is condensed
The middle part of coil-type reactor is introduced to afterwards, the water at rectifying column bottom is drained into wastewater disposal basin, by the fat of coil-type reactor bottom
Acid esters drains into storage tank.
5. the method for aliphatic acid production aliphatic ester as claimed in claim 4, it is characterised in that：The low-carbon alcohols for methanol or
Ethyl alcohol.
6. the method for aliphatic acid production aliphatic ester as described in claim 4 or 5, it is characterised in that：Coil-type reactor temperature
Degree control is at 165 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810072707.1A CN108048224A (en) | 2018-01-25 | 2018-01-25 | Aliphatic acid produces the device and method of aliphatic ester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810072707.1A CN108048224A (en) | 2018-01-25 | 2018-01-25 | Aliphatic acid produces the device and method of aliphatic ester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108048224A true CN108048224A (en) | 2018-05-18 |
Family
ID=62124774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810072707.1A Pending CN108048224A (en) | 2018-01-25 | 2018-01-25 | Aliphatic acid produces the device and method of aliphatic ester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108048224A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062894A (en) * | 2006-04-28 | 2007-10-31 | 中国石油化工股份有限公司 | Esterification method of aliphatic acid |
| CN101148600A (en) * | 2007-10-18 | 2008-03-26 | 江苏高科石化股份有限公司 | Method for preparing biological diesel oil from waste animals and plants grease |
| CN103254996A (en) * | 2013-05-29 | 2013-08-21 | 深圳市腾浪再生资源发展有限公司 | Method and esterification tower for manufacturing biodiesel by employing gas phase alcoholysis method by utilizing waste oil |
| CN207904216U (en) * | 2018-01-25 | 2018-09-25 | 南通金利油脂工业有限公司 | Aliphatic acid produces the device of aliphatic ester |
-
2018
- 2018-01-25 CN CN201810072707.1A patent/CN108048224A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062894A (en) * | 2006-04-28 | 2007-10-31 | 中国石油化工股份有限公司 | Esterification method of aliphatic acid |
| CN101148600A (en) * | 2007-10-18 | 2008-03-26 | 江苏高科石化股份有限公司 | Method for preparing biological diesel oil from waste animals and plants grease |
| CN103254996A (en) * | 2013-05-29 | 2013-08-21 | 深圳市腾浪再生资源发展有限公司 | Method and esterification tower for manufacturing biodiesel by employing gas phase alcoholysis method by utilizing waste oil |
| CN207904216U (en) * | 2018-01-25 | 2018-09-25 | 南通金利油脂工业有限公司 | Aliphatic acid produces the device of aliphatic ester |
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