CN109157859A - A kind of fatty acid vacuum (distilling) column - Google Patents
A kind of fatty acid vacuum (distilling) column Download PDFInfo
- Publication number
- CN109157859A CN109157859A CN201811113593.7A CN201811113593A CN109157859A CN 109157859 A CN109157859 A CN 109157859A CN 201811113593 A CN201811113593 A CN 201811113593A CN 109157859 A CN109157859 A CN 109157859A
- Authority
- CN
- China
- Prior art keywords
- tower body
- packing section
- filler
- fatty acid
- distilling
- 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.)
- Granted
Links
- 235000014113 dietary fatty acids Nutrition 0.000 title claims abstract description 32
- 229930195729 fatty acid Natural products 0.000 title claims abstract description 32
- 239000000194 fatty acid Substances 0.000 title claims abstract description 32
- 150000004665 fatty acids Chemical class 0.000 title claims abstract description 31
- 238000012856 packing Methods 0.000 claims abstract description 50
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000008676 import Effects 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims abstract description 6
- 239000007792 gaseous phase Substances 0.000 claims abstract description 6
- 239000012071 phase Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims description 47
- 239000007788 liquid Substances 0.000 claims description 22
- 238000009826 distribution Methods 0.000 claims description 21
- 238000010992 reflux Methods 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000011344 liquid material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- -1 carbon chain fatty acid Chemical class 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- 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
- C11C1/00—Preparation of fatty acids from fats, fatty oils, or waxes; Refining the fatty acids
- C11C1/08—Refining
- C11C1/10—Refining by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The problem of the present invention provides a kind of fatty acid vacuum (distilling) column, can solve that existing destilling tower is relatively simple for structure, and fatty acid product purity obtained is lower, and the different qualified fatty acid product of grade can not be produced in same destilling tower.It includes tower body, and the bottom of tower body is equipped with material outlet, and the lower inside of tower body installs having heaters, and the inside of tower body is sequentially arranged at intervals with the first packing section, the second packing section, total condenser and third packing section along its short transverse from the bottom to top；Tower body side below the first packing section offers circulation gas phase import, offers gaseous phase outlet at the top of tower body.
Description
Technical field
The present invention relates to destilling tower field, specially a kind of fatty acid vacuum (distilling) column.
Background technique
In oil and fat chemical production process, a large amount of natural croude fatty acids mixtures can be obtained, usually contain smell, pigment
The presence of the impurity such as substance and short carbon chain fatty acid, these impurity will affect the color of fatty acid, smell and purposes.Pass through vacuum
Destilling tower can make croude fatty acids mixture deaerate under condition of high vacuum degree the de- light component of deodorization, obtain pure fatty acid product, pure
Product fatty acid can be widely applied to the fields such as flotation, weaving, medicine, chemical industry, syntholube, emulsifier.Existing destilling tower
Relatively simple for structure, fatty acid product purity obtained is lower, and a destilling tower intelligently produces a kind of fatty acid of grade
Product when producing different grades of fatty acid product, needs continuously to be arranged multiple destilling towers, and equipment investment is high.
Summary of the invention
Relatively simple for structure for existing destilling tower, fatty acid product purity obtained is lower, and can not be in same distillation
The technical issues of different qualified fatty acid product of grade is produced in tower, the present invention provides a kind of vacuum distillations of fatty acid
Tower, can the different qualified fatty acid of two kinds of grades of output, and product purity height simultaneously.
Its technical solution is such that a kind of fatty acid vacuum (distilling) column comprising the bottom of tower body, the tower body is equipped with
The lower inside of material outlet, the tower body installs having heaters, it is characterised in that: the inside of the tower body is along its short transverse
It is sequentially arranged at intervals with the first packing section, the second packing section, total condenser and third packing section from the bottom to top；Positioned at described first
The tower body side below packing section offers circulation gas phase import, offers gaseous phase outlet at the top of the tower body；
First packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler one on the tower body, liquid distribution
The outlet at bottom of device one, feed pipe and catch tray one, the catch tray one is connected to the feed pipe, one end of the feed pipe
Level is pierced by the tower body, discharge port one is equipped with below the tube wall of the feed pipe, the liquid distribution trough one is used for will be by institute
The material that discharge port one comes out is stated to be evenly distributed in the filler one；
Second packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler two on the tower body, liquid distribution
Device two and complete cold product reflux pipe are also pacified in the tower body between cold product reflux pipe and the total condenser entirely
Equipped with catch tray two, the outlet at bottom of the catch tray two is connected to the complete cold products export on the tower body side wall, described complete
One end level of cold product reflux pipe is pierced by the tower body, is equipped with discharge port two below the tube wall of the complete cold product reflux pipe,
The liquid distribution trough two is used to for the material come out by the discharge port two being evenly distributed in the filler two；
The third packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler three on the tower body, liquid distribution
Device three and return pipe are also equipped with catch tray three, institute in the tower body between the filler three and the total condenser
The outlet at bottom for stating catch tray three is connected to products export in the tower on the tower body side wall, and one end level of the return pipe is worn
The tube wall lower section of the tower body out, the return pipe is equipped with discharge port three, and the liquid distribution trough three is used for will be by the discharging
The materials that mouth three comes out are evenly distributed in the filler three.
It is further characterized by:
The total condenser includes the upper perforated plate and lower perforated plate that heat-exchanging tube bundle and fixing sleeve are loaded on the heat-exchanging tube bundle both ends, institute
It states upper perforated plate and the lower perforated plate is respectively and fixedly connected on the inner wall of the tower body, the heat exchanger tube is corresponded on the side wall of the tower body
Water inlet is offered below beam, the top of the corresponding heat-exchanging tube bundle is equipped with water outlet, and the tower body is interior along the heat exchanger tube
The short transverse of beam is also spaced and baffle plate has been installed in a staggered manner.
The tower body includes sequentially connected lower head, lower shell, reducer, upper shell and upper cover from the bottom to top, institute
The bottom for stating tower body is provided with skirt, and first packing section and second packing section are mounted in the lower shell, described
Reducer is the conical shell of upward tapered diameter, and the total condenser and the third packing section are mounted on the upper shell
It is interior.
The side wall of the tower body corresponding with the total condenser is equipped with expansion joint.
Multiple stiffening rings are installed along its short transverse interval on the lateral wall of the tower body.
In the lower sidewalls of the tower body, on the tower body side wall corresponding with first packing section, with described second
It is respectively equipped on the corresponding tower body side wall of packing section, on the tower body side wall of two sides above and below the third packing section
Manhole is equipped with visor on the manhole.
The lower section of the filler one, the filler two and the filler three is by being separately mounted to filling out in the tower body inner wall
Expect bracing ring support, top is compressed by the filler pressing being separately mounted in the tower body inner wall.
The beneficial effects of the present invention are:
Fatty acid distillation tower of the invention can be realized the high-precision of fatty acid product by the way that three sections of fillers are arranged in tower body
Purification, product purity is high, and can get the different fatty acid product of grade at complete cold products export and products export in tower,
Two kinds of different grades of qualified fatty acid products can be obtained, simultaneously i.e. in same destilling tower so as to substantially reduce equipment investment
Cost.
Detailed description of the invention
Fig. 1 is main view of the invention；
Fig. 2 is the enlarged drawing of the first packing section and the second packing section；
Fig. 3 is the enlarged drawing of total condenser and third packing section.
Appended drawing reference: 1- lower head；2- lower shell；3- reducer；4- upper shell；5- upper cover；6- skirt；7- material goes out
Mouthful；8- heater；The first packing section of 9-；10- filler one；11- liquid distribution trough one；12- feed pipe；13- catch tray one；14-
Second packing section；15- filler two；16- liquid distribution trough two；17- cold product reflux pipe entirely；18- catch tray two；19- cold production entirely
Product outlet；20- total condenser；21- third packing section；22- filler three；23- liquid distribution trough three；24- return pipe；25- liquid collecting
Disk three；Products export in 26- tower；27- recycles gas phase import；28- gaseous phase outlet；29- heat-exchanging tube bundle；30- upper perforated plate；Under 31-
Tube sheet；32- water inlet；33- water outlet；34- baffle plate；35- expansion joint；36- stiffening ring；37- manhole；38- packing support circle；
39- filler pressing；121- discharge port one；171- discharge port two；241- discharge port three.
Specific embodiment
See Fig. 1 to Fig. 3, a kind of fatty acid vacuum (distilling) column of the invention comprising tower body, tower body include from the bottom to top according to
Lower head 1, lower shell 2, reducer 3, upper shell 4 and the upper cover 5 of secondary connection, the bottom of tower body is provided with skirt 6, lower head
1 bottom is equipped with material outlet 7, installs having heaters 8 in lower head 1；The inside of tower body along its short transverse from the bottom to top according to
Minor tick is provided with the first packing section 9, the second packing section 14, total condenser 20 and third packing section 21, wherein the first packing section
9 and second packing section 14 be mounted in lower shell 4, total condenser 20 and third packing section 21 are mounted in upper shell 2；Positioned at
The tower body side of one packing section, 9 lower section offers circulation gas phase import 27, offers gaseous phase outlet 28 at the top of tower body；First fills out
Material section 9 includes being adjacently positioned from the bottom to top and being separately mounted to the filler 1 on tower body, liquid distribution trough 1, feed pipe 12
It being connected to the outlet at bottom of catch tray 1, catch tray 1 with feed pipe 12, one end level of feed pipe 12 is pierced by tower body, into
Uniform intervals are equipped with discharge port 1, the upper end import of liquid distribution trough 1 along its length below the tube wall of expects pipe 12
It is connected to discharge port 1, lower end outlet is connected to filler 1, for uniformly dividing the material come out by discharge port 1
In cloth to filler 1；Second packing section 14 include be adjacently positioned and be separately mounted to from the bottom to top the filler 2 15 on tower body,
Liquid distribution trough 2 16 and complete cold product reflux pipe 17, in the tower body entirely between cold product reflux pipe 17 and total condenser 20
It is also equipped with catch tray 2 18, the outlet at bottom of catch tray 2 18 is connected to the complete cold products export 19 on tower body side wall, Quan Leng
One end level of product reflux pipe 17 is pierced by tower body, uniform intervals along its length below the tube wall of complete cold product reflux pipe 17
Equipped with discharge port 2 171, the upper end import of liquid distribution trough 2 16 is connected to discharge port 2 171, lower end outlet and filler 2 15
Connection, for the material come out by discharge port 2 171 to be evenly distributed in filler 2 15；Third packing section 21 include by down toward
On be adjacently positioned and be separately mounted to the filler 3 22 on tower body, liquid distribution trough 3 23 and return pipe 24, be located at filler 3 22
Catch tray 3 25 is also equipped in tower body between total condenser 20, on the outlet at bottom and tower body side wall of catch tray 3 25
Products export 26 is connected in tower, and one end level of return pipe 24 is pierced by tower body, and the tube wall lower section of return pipe 24 is along its length
Uniform intervals are equipped with discharge port 3 241, and the upper end import of liquid distribution trough 3 23 be connected to discharge port 3 241, lower end export and
Filler 3 22 is connected to, for the material come out by discharge port 3 241 to be evenly distributed in filler 3 22；Total condenser 20 includes
Heat-exchanging tube bundle 29 and fixing sleeve are loaded on the upper perforated plate 30 and lower perforated plate 31 at 29 both ends of heat-exchanging tube bundle, upper perforated plate 30 and lower perforated plate 31
It is respectively and fixedly connected on the inner wall of tower body, the lower section that heat-exchanging tube bundle 29 is corresponded on the side wall of tower body offers water inlet 32, and correspondence is changed
The top of heat pipe bundle 29 is equipped with water outlet 33, and the interior short transverse along heat-exchanging tube bundle 29 of tower body is also spaced and baffling has been installed in a staggered manner
The side wall of plate 34, tower body corresponding with total condenser 20 is equipped with expansion joint 35.Wherein, catch tray 1 is for collecting by filler
The liquid material flowed down in 2 15, this partially liq material enter filler 1 together with the liquid material in feed pipe 12, with
Mass transfer is carried out in filler 1 by the gas material of 8 heating evaporation of heater；Catch tray 2 18 is for collecting by total condenser
The complete cold products of 20 condensations, the complete cold product of a part can return in tower body through complete cold product reflux pipe 17, in filler 2 15 into
One step participates in mass transfer, and the natural back flow of product in tower can be achieved in the setting of total condenser 20；Catch tray 3 25 is for collecting by filling out
Expect that product in the tower flowed down in 3 22, a small amount of material that residue is not purified then by 28 discharge of top gaseous phase outlet, carry out subsequent
Processing.
See Fig. 2 and Fig. 3, multiple stiffening rings 36 are installed along its short transverse interval on the lateral wall of tower body.Due to tower height
Tens meters, the overall stability of tower body can be improved in setting stiffening ring.
See Fig. 1 to Fig. 3, in the lower sidewalls of tower body, on tower body side wall corresponding with the first packing section 9, with the second filler
Manhole 37, manhole are respectively equipped on 14 corresponding tower body side walls of section, on the tower body side wall of about 21 two sides of third packing section
Visor is installed on 37.It is designed in this way, convenient for being overhauled to tower body inside.
See Fig. 2 and Fig. 3, the lower section of filler 1, filler 2 15 and filler 3 22 is by being separately mounted in tower body inner wall
Packing support circle 38 supports, and top is compressed by the filler pressing 39 being separately mounted in tower body inner wall.It is designed in this way, is convenient for filler
Installation.
Claims (7)
1. a kind of fatty acid vacuum (distilling) column comprising tower body, the bottom of the tower body are equipped with material outlet, the tower body it is interior
Having heaters is installed, it is characterised in that: the inside of the tower body is along the successively interval setting from the bottom to top of its short transverse below portion
There are the first packing section, the second packing section, total condenser and third packing section；The tower body below first packing section
Side offers circulation gas phase import, offers gaseous phase outlet at the top of the tower body；
First packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler one on the tower body, liquid distribution
The outlet at bottom of device one, feed pipe and catch tray one, the catch tray one is connected to the feed pipe, one end of the feed pipe
Level is pierced by the tower body, discharge port one is equipped with below the tube wall of the feed pipe, the liquid distribution trough one is used for will be by institute
The material that discharge port one comes out is stated to be evenly distributed in the filler one；
Second packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler two on the tower body, liquid distribution
Device two and complete cold product reflux pipe are also pacified in the tower body between cold product reflux pipe and the total condenser entirely
Equipped with catch tray two, the outlet at bottom of the catch tray two is connected to the complete cold products export on the tower body side wall, described complete
One end level of cold product reflux pipe is pierced by the tower body, is equipped with discharge port two below the tube wall of the complete cold product reflux pipe,
The liquid distribution trough two is used to for the material come out by the discharge port two being evenly distributed in the filler two；
The third packing section includes being adjacently positioned and being separately mounted to from the bottom to top filler three on the tower body, liquid distribution
Device three and return pipe are also equipped with catch tray three, institute in the tower body between the filler three and the total condenser
The outlet at bottom for stating catch tray three is connected to products export in the tower on the tower body side wall, and one end level of the return pipe is worn
The tube wall lower section of the tower body out, the return pipe is equipped with discharge port three, and the liquid distribution trough three is used for will be by the discharging
The materials that mouth three comes out are evenly distributed in the filler three.
2. a kind of fatty acid vacuum (distilling) column according to claim 1, it is characterised in that: the total condenser includes heat exchange
Tube bank and fixing sleeve are loaded on the upper perforated plate and lower perforated plate at the heat-exchanging tube bundle both ends, the upper perforated plate and lower perforated plate difference
It is fixed on the inner wall of the tower body, is corresponded on the side wall of the tower body and offer water inlet below the heat-exchanging tube bundle, it is right
The top of the heat-exchanging tube bundle is answered to be equipped with water outlet, the interior short transverse along the heat-exchanging tube bundle of the tower body is also spaced and is staggered
Baffle plate is installed.
3. a kind of fatty acid vacuum (distilling) column according to claim 1, it is characterised in that: the tower body includes from the bottom to top
Sequentially connected lower head, lower shell, reducer, upper shell and upper cover, the bottom of the tower body are provided with skirt, and described
One packing section and second packing section are mounted in the lower shell, and the reducer is the conically shaped of upward tapered diameter
Body, the total condenser and the third packing section are mounted in the upper shell.
4. a kind of fatty acid vacuum (distilling) column according to claim 1,2 or 3, it is characterised in that: with the total condenser
The side wall of the corresponding tower body is equipped with expansion joint.
5. a kind of fatty acid vacuum (distilling) column according to claim 1, it is characterised in that: edge on the lateral wall of the tower body
Its short transverse interval is equipped with multiple stiffening rings.
6. a kind of fatty acid vacuum (distilling) column according to claim 1 or 3, it is characterised in that: the lower side of the tower body
On wall and on the corresponding tower body side wall of first packing section, the tower body side wall corresponding with second packing section
Above, it is respectively equipped with manhole on the tower body side wall of two sides above and below the third packing section, view is installed on the manhole
Mirror.
7. a kind of fatty acid vacuum (distilling) column according to claim 1, it is characterised in that: the filler one, the filler
Two and the lower section of the filler three supported by the packing support circle that is separately mounted in the tower body inner wall, top by installing respectively
Filler pressing in the tower body inner wall compresses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113593.7A CN109157859B (en) | 2018-09-25 | 2018-09-25 | Fatty acid vacuum distillation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113593.7A CN109157859B (en) | 2018-09-25 | 2018-09-25 | Fatty acid vacuum distillation tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109157859A true CN109157859A (en) | 2019-01-08 |
| CN109157859B CN109157859B (en) | 2020-12-22 |
Family
ID=64880144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811113593.7A Active CN109157859B (en) | 2018-09-25 | 2018-09-25 | Fatty acid vacuum distillation tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109157859B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167146A (en) * | 2019-12-26 | 2020-05-19 | 重庆市中润化学有限公司 | A dehydration tower for NMP waste liquid recovery |
| CN112500933A (en) * | 2020-11-20 | 2021-03-16 | 汕头市天汇健生物技术有限公司 | Process for purification of crude fatty acids |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201710985U (en) * | 2010-07-07 | 2011-01-19 | 中国石油化工股份有限公司 | Deep-cut vacuum distillation tower |
| CN203315771U (en) * | 2013-05-26 | 2013-12-04 | 福建省三明鑫利佳机械设备制造有限公司 | Fatty acid fractionating tower |
| CN204097436U (en) * | 2014-07-30 | 2015-01-14 | 九江力山环保科技有限公司 | The production equipment of a kind of croude fatty acids distillation plant and light-colored oleic acid |
| CN207654737U (en) * | 2017-09-25 | 2018-07-27 | 路桂英 | A kind of novel ammonium sulfate decyanation tower |
-
2018
- 2018-09-25 CN CN201811113593.7A patent/CN109157859B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201710985U (en) * | 2010-07-07 | 2011-01-19 | 中国石油化工股份有限公司 | Deep-cut vacuum distillation tower |
| CN203315771U (en) * | 2013-05-26 | 2013-12-04 | 福建省三明鑫利佳机械设备制造有限公司 | Fatty acid fractionating tower |
| CN204097436U (en) * | 2014-07-30 | 2015-01-14 | 九江力山环保科技有限公司 | The production equipment of a kind of croude fatty acids distillation plant and light-colored oleic acid |
| CN207654737U (en) * | 2017-09-25 | 2018-07-27 | 路桂英 | A kind of novel ammonium sulfate decyanation tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111167146A (en) * | 2019-12-26 | 2020-05-19 | 重庆市中润化学有限公司 | A dehydration tower for NMP waste liquid recovery |
| CN112500933A (en) * | 2020-11-20 | 2021-03-16 | 汕头市天汇健生物技术有限公司 | Process for purification of crude fatty acids |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109157859B (en) | 2020-12-22 |
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