CN214032385U - Production equipment for producing fatty acid by taking soapstock as raw material - Google Patents
Production equipment for producing fatty acid by taking soapstock as raw material Download PDFInfo
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- CN214032385U CN214032385U CN202022455906.6U CN202022455906U CN214032385U CN 214032385 U CN214032385 U CN 214032385U CN 202022455906 U CN202022455906 U CN 202022455906U CN 214032385 U CN214032385 U CN 214032385U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/74—Recovery of fats, fatty oils, fatty acids or other fatty substances, e.g. lanolin or waxes
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Abstract
The utility model relates to a production device which has small occupied space, simple installation, inspection and convenient maintenance and can greatly reduce the equipment investment and the maintenance cost and produce fatty acid by taking soapstock as raw material, comprising a heat preservation tank, a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal pressure layering tower and a process water condensation tank; the system comprises a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal-pressure layering tower and a process water storage tank, wherein the filter, the degassing tower, the heat exchangers, the delivery pumps, the oil-water mixer, the hydrolysis kettle, the flash tank, the acidification kettles and the normal-pressure layering tower are connected with the process water storage tank through pipelines. The utility model discloses equipment occupation space is little, the installation is simple, patrol and examine, easy maintenance, and the equipment that alleviates that can be very big drops into and the maintenance cost.
Description
Technical Field
The utility model belongs to the technical field of fatty acid production, concretely relates to equipment occupation space is little, the installation is simple, patrol and examine, easy maintenance, can be very big alleviate equipment input and maintenance cost's the production facility that uses the nigre to produce fatty acid as the raw materials.
Background
The soapstock is formed in the alkali refining deacidification step of the refining process in the oil production process, the Free Fatty Acid (FFA) in the crude oil is neutralized into fatty acid sodium salt by adopting a sodium hydroxide solution, soap colloid is formed, neutral oil, pigment and other impurities are carried in the soap colloid, and the whole soap colloid is called the soapstock.
The soapstock amount generally accounts for 3% -20% of the crude oil amount, and the soapstock amount generated by refining the high-acid-value crude cotton oil and the crude oil is more. The composition of soapstock varies with the process and operation and is roughly: the soap (sodium fatty acid) content is 30-40%, the neutral oil (glyceride) content is 8-27%, and the rest is water, protein, carbohydrate, pigment and other substances, wherein the total fatty acid content is up to 40-60%.
Fatty acid is an important chemical basic raw material, and is widely applied to rubber, plastics, textile, washing, paper making, medicine, food and other industries. The soapstock with a total fatty acid content of 40-60% is an ideal raw material for producing fatty acid. Thus, the separation and extraction of fatty acids from soapstock is becoming a hot spot in the fatty acid production industry.
The prior domestic methods for producing fatty acid by soapstock mainly comprise three methods: hydrolytic acidification, saponification acidification and acidification hydrolysis.
1) A hydrolysis acidification method: the reaction principle is that neutral oil in the soapstock is hydrolyzed into fatty acid and glycerin, and then the fatty acid sodium in the soapstock is converted into fatty acid through acidification. The hydrolysis reaction is the same as the hydrolysis principle of the prior grease.
The hydrolysis acidification method has the advantages of high oil conversion rate, resource saving, three-waste discharge reduction, benefit for glycerol recovery and the like.
The method has the main problems that oil and water are easy to emulsify due to the influence of impurities and sodium fatty acid during hydrolysis, the oil-water separation is influenced, and the normal production is influenced. If the acidic catalyst is adopted, the content of fatty acid can be increased, and the hydrolysis speed and the conversion rate are influenced. So is now substantially unused.
2) A saponification hydrolysis method: the reaction principle is that neutral oil in the soapstock is firstly converted into sodium fatty acid and glycerin through sodium hydroxide reaction, and then is converted into fatty acid through acidification together with the sodium fatty acid in the soapstock.
The method has the main problems that a large amount of acid and alkali are consumed in the production process, the equipment is corroded greatly, a large amount of waste water is generated by colleagues, the environment is polluted, and the production cost is high.
3) And (3) an acidification hydrolysis method: the reaction principle is that firstly, the sodium fatty acid in the soapstock is converted into fatty acid through acidification, so as to obtain a mixture of fatty acid and neutral oil, the mixture is generally called acidified oil, and then the neutral oil in the mixture is hydrolyzed to obtain the fatty acid.
The acidification hydrolysis method has the characteristics of resource saving, three-waste discharge reduction, simple operation, benefit for glycerol recovery and the like, so the acidification hydrolysis method is more commonly applied.
The method has the main problems that during the hydrolysis reaction, the content of fatty acid in the system is high, which is not beneficial to the hydrolysis reaction, and the hydrolysis rate is only 90-92 percent generally.
The existing fatty acid hydrolysis method generally adopts a high-pressure catalyst-free continuous oil hydrolysis method: the main equipment is a grease hydrolysis tower, wherein grease enters from the lower part of the hydrolysis tower, deionized water enters from the upper end of the hydrolysis tower, after hydrolysis, a glycerol aqueous solution is led out from the lower part of the hydrolysis tower, crude fatty acid is led out from the upper part of the hydrolysis tower, high-pressure steam is fed into the middle of the hydrolysis tower at multiple points, bubble caps are respectively arranged at the upper part and the lower part of the hydrolysis tower, and the rest is empty. In the actual operation of the device, in order to improve the hydrolysis rate, the tower body is generally thin and high, the oil-water ratio of the feeding material is 1:0.6 (the feeding amount of water is more than 5 times of that of the water actually participating in the reaction), the reaction temperature is 245-.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the equipment investment of the hydrolysis tower is large in the traditional hydrolysis acidification method, the equipment occupation space is large, the defect of poor safety is small, the installation is simple, the inspection and maintenance are convenient, the equipment for producing fatty acid by taking nigre as raw material can be greatly reduced the equipment investment and maintenance cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a production device for producing fatty acid by taking soapstock as a raw material comprises a heat preservation tank, a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal pressure layering tower and a process water condensation tank; the system comprises a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal-pressure layering tower and a process water storage tank, wherein the filter, the degassing tower, the heat exchangers, the delivery pumps, the oil-water mixer, the hydrolysis kettle, the flash tank, the acidification kettles and the normal-pressure layering tower are connected with the process water storage tank through pipelines.
Preferably, the heat exchanger comprises a process water heat exchanger, a first heat exchanger and a second heat exchanger.
Preferably, the delivery pumps comprise a process water delivery pump and a soapstock delivery pump.
Preferably, the feed inlet of the flash tank is positioned in the middle, the upper end of the flash tank is connected with the first heat exchanger and the process water storage tank, and the lower end of the flash tank is connected with the second heat exchanger and the acidification kettle.
Preferably, the acidification kettles are arranged in parallel.
Preferably, the degassing tower is externally connected with a vacuum device.
Preferably, the filter is connected with the degassing tower and then connected to the oil-water mixer through a soapstock high-pressure delivery pump; the process water delivery pump is connected with the process water heat exchanger and then directly connected to the oil-water mixer; the mixture passes through an oil-water mixer and is directly connected with a feed inlet of a hydrolysis kettle, and a discharge port of the hydrolysis kettle is connected with a feed inlet of a flash tank.
Preferably, the height of the hydrolysis kettle is 3-4m, a plurality of layers of horizontal stirring paddles are arranged in the hydrolysis kettle, and the hydrolysis kettle is externally connected with a nitrogen gas source.
Compared with the prior art, the utility model has the advantages of it is following
The utility model discloses the cauldron of hydrolysising replaces high pressure hydrolysis tower in the past to carry out hydrolysis. Compared with a hydrolysis tower, the hydrolysis kettle has smaller equipment, low investment and higher safety;
the height of the hydrolysis kettle of the utility model is generally 3-4 meters, compared with the height of the hydrolysis tower which is generally 20-30 meters. The equipment occupies small space, is simple to install and convenient to inspect and maintain, and can greatly reduce the equipment investment and maintenance cost;
the utility model discloses hydrolysis kettle adopts disposable watering shaping. Compared with a hydrolysis tower welded by steel plates, the kettle body has no welding point, and is corrosion-resistant and pressure-resistant on the whole. The likelihood of leakage is lower;
the feeding of the hydrolysis kettle adopts the feeding above the reaction liquid level, so that the danger of back flow and injection of the reaction liquid can not occur if equipment failure, power failure and the like occur;
the utility model discloses the cauldron of hydrolysising adopts multilayer horizontal stirring rake, reduces the upper and lower exchange of liquid. Meanwhile, the raw materials are added from the upper liquid level and are extruded from the bottom, so that the whole materials slowly fall along with the feeding and discharging, and the grease can have enough hydrolysis time in the reaction kettle.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1. a process water delivery pump; 2. a process water heat exchanger; 3. a filter; 4. a degassing tower; 5. a soapstock delivery pump; 6. an oil-water mixer; 7. a hydrolysis kettle; 8. a flash tank; 9. a first heat exchanger; 10. a process water condensing tank; 11. a second heat exchanger; 12. acidifying the kettle; 13. a normal pressure layering tower; 14. a heat preservation tank; 15. a vacuum device; 16. a process water storage tank; 17. a source of nitrogen gas.
Detailed Description
The present invention will be further explained with reference to the following embodiments and drawings.
Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. Additionally, the embodiments should be considered illustrative, and not restrictive, of the scope of the invention, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes or modifications to the reaction conditions and separation and extraction conditions of these embodiments can be made without departing from the spirit and scope of the invention.
Referring to fig. 1, the utility model provides an use soapstock as production facility of raw materials production fatty acid, including filter 3, degasification tower 4, process water delivery pump 1, process water heat exchanger 2, soapstock delivery pump 5, oil-water mixer 6, hydrolysis kettle 7, flash tank 8, first heat exchanger 9, process water condensate tank 10, second heat exchanger 11, 2 acidizing cauldron 12 and ordinary pressure layering tower 13, still include holding tank 14, vacuum apparatus 15, process water storage jar 16 and nitrogen gas source 17.
Wherein, the filter 3 is connected with a degassing tower 4 and then connected with an oil-water mixer 6 through a soapstock delivery pump 5; the process water delivery pump 1 is connected with the process water heat exchanger 2 and then directly connected to the oil-water mixer 6; the water passes through an oil-water mixer 6 and is directly connected with a feed inlet of a hydrolysis kettle 7, a discharge port of the hydrolysis kettle 7 is connected with a feed inlet of a flash tank 8, the feed inlet of the flash tank 8 is positioned in the middle, and the upper end of the flash tank 8 is connected with a first heat exchanger 9 and a process water condensing tank 10; after a discharge port at the lower end of the flash tank 8 is connected with a second heat exchanger 11, two acidification kettles 12 which are arranged in parallel are connected, and finally, the acidification kettles are connected with a normal-pressure layering tower 13.
The degassing tower 4 is externally connected with a vacuum device 15; the hydrolysis kettle 7 is externally connected with a nitrogen gas source 17.
The height of the hydrolysis kettle of the utility model is generally 3-4 meters, compared with the height of the hydrolysis tower which is generally 20-30 meters. The equipment occupies small space, is simple to install and convenient to inspect and maintain, and can greatly reduce the equipment investment and maintenance cost;
the utility model discloses hydrolysis kettle adopts disposable watering shaping. Compared with a hydrolysis tower welded by steel plates, the kettle body has no welding point, and is corrosion-resistant and pressure-resistant on the whole. The likelihood of leakage is lower;
the feeding of the hydrolysis kettle adopts the feeding above the reaction liquid level, so that the danger of back flow and injection of the reaction liquid can not occur if equipment failure, power failure and the like occur;
the utility model discloses the cauldron of hydrolysising adopts multilayer horizontal stirring rake, reduces the upper and lower exchange of liquid. Meanwhile, the raw materials are added from the upper liquid level and are extruded from the bottom, so that the whole materials slowly fall along with the feeding and discharging, and the grease can have enough hydrolysis time in the reaction kettle.
When the utility model is used, the waste water is pumped out from the heat preservation tank 14 through the soapstock delivery pump 5 and filtered by the filter 3, the filtrate is subjected to heat exchange by the heat exchanger, the temperature is controlled to be 85-90 ℃, the waste water enters the degassing tower 4 for degassing, and the waste water is pumped out through the soapstock delivery pump 5 for preparing feeding after degassing; the process water is pumped out from the process water storage tank 16 through a high-pressure delivery pump and exchanges heat through the process water heat exchanger 2, and the temperature is controlled to be 85-90 ℃; feeding soapstock and feeding water flow are fed into the oil-water mixer 6 according to the feeding ratio of 1:0.25 and are mixed, and then the mixture enters the hydrolysis kettle 7; continuously discharging at a feeding flow (the flow of the fed grease is added with the flow of the fed water), and pressing the materials into a flash tank 8 through the pressure in the kettle; the material enters a flash tank 8 and is subjected to boiling phenomenon due to overhigh temperature, a large amount of water is vaporized, vaporized steam is collected to a process water condensing tank 10 after being cooled by a first heat exchanger 9, and kettle liquid is pumped into an acidification kettle 12 after being cooled by a second heat exchanger 11 (the temperature is controlled to be 50-60 ℃); pumping the acidified solution into a normal-pressure layering tower 14 through a delivery pump for separation, wherein the upper layer is an oil layer and the lower layer is a water layer, the oil layer is crude fatty acid, and the water layer is sweet water.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. A production device for producing fatty acid by taking soapstock as a raw material comprises a heat preservation tank, and is characterized by further comprising a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal-pressure layering tower and a process water condensing tank; the system comprises a filter, a degassing tower, a plurality of heat exchangers, a plurality of delivery pumps, an oil-water mixer, a hydrolysis kettle, a flash tank, a plurality of acidification kettles, a normal-pressure layering tower and a process water storage tank, wherein the filter, the degassing tower, the heat exchangers, the delivery pumps, the oil-water mixer, the hydrolysis kettle, the flash tank, the acidification kettles and the normal-pressure layering tower are connected with the process water storage tank through pipelines.
2. The apparatus for producing fatty acid from soapstock as claimed in claim 1, wherein said heat exchanger comprises a process water heat exchanger, a first heat exchanger and a second heat exchanger.
3. The apparatus for producing fatty acid from soapstock as claimed in claim 1, wherein said pumps comprise process water pumps and soapstock pumps.
4. The production equipment for producing fatty acid by using soapstock as a raw material according to claim 1, wherein a feed inlet of the flash tank is positioned in the middle, the upper end of the flash tank is connected with the first heat exchanger and the process water storage tank, and the lower end of the flash tank is connected with the second heat exchanger and the acidification kettle.
5. The apparatus for producing fatty acid from soapstock as claimed in claim 1, wherein said acidification kettles are arranged in parallel.
6. The apparatus for producing fatty acid from soapstock as claimed in claim 1, wherein the degassing tower is externally connected to a vacuum apparatus.
7. The production equipment for producing fatty acid by using soapstock as a raw material according to claim 1, wherein the filter is connected with the degassing tower and then connected to the oil-water mixer through a soapstock high-pressure delivery pump; the process water delivery pump is connected with the process water heat exchanger and then directly connected to the oil-water mixer; the mixture passes through an oil-water mixer and is directly connected with a feed inlet of a hydrolysis kettle, and a discharge port of the hydrolysis kettle is connected with a feed inlet of a flash tank.
8. The production equipment for producing fatty acid by using soapstock as a raw material according to claim 1, wherein the height of the hydrolysis kettle is 3-4m, a plurality of layers of horizontal stirring paddles are arranged inside the hydrolysis kettle, and the hydrolysis kettle is externally connected with a nitrogen gas source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455906.6U CN214032385U (en) | 2020-10-29 | 2020-10-29 | Production equipment for producing fatty acid by taking soapstock as raw material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455906.6U CN214032385U (en) | 2020-10-29 | 2020-10-29 | Production equipment for producing fatty acid by taking soapstock as raw material |
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| CN214032385U true CN214032385U (en) | 2021-08-24 |
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| CN202022455906.6U Active CN214032385U (en) | 2020-10-29 | 2020-10-29 | Production equipment for producing fatty acid by taking soapstock as raw material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195068A (en) * | 2020-10-29 | 2021-01-08 | 赞宇科技集团股份有限公司 | Process for producing fatty acid by taking soapstock as raw material and production equipment thereof |
| CN114058445A (en) * | 2021-10-29 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Vegetable insulating oil and purification method thereof |
-
2020
- 2020-10-29 CN CN202022455906.6U patent/CN214032385U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195068A (en) * | 2020-10-29 | 2021-01-08 | 赞宇科技集团股份有限公司 | Process for producing fatty acid by taking soapstock as raw material and production equipment thereof |
| CN114058445A (en) * | 2021-10-29 | 2022-02-18 | 广东电网有限责任公司广州供电局 | Vegetable insulating oil and purification method thereof |
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