CN114381337B - Preparation method for preparing acidified oil from rice bran oil soapstock - Google Patents
Preparation method for preparing acidified oil from rice bran oil soapstock Download PDFInfo
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- CN114381337B CN114381337B CN202210124071.7A CN202210124071A CN114381337B CN 114381337 B CN114381337 B CN 114381337B CN 202210124071 A CN202210124071 A CN 202210124071A CN 114381337 B CN114381337 B CN 114381337B
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- sulfuric acid
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- 239000003921 oil Substances 0.000 title claims abstract description 51
- 235000019198 oils Nutrition 0.000 title claims abstract description 51
- 235000019774 Rice Bran oil Nutrition 0.000 title claims abstract description 25
- 239000008165 rice bran oil Substances 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 145
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- 230000020477 pH reduction Effects 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011259 mixed solution Substances 0.000 claims abstract description 15
- 239000007921 spray Substances 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 71
- 238000002347 injection Methods 0.000 claims description 57
- 239000007924 injection Substances 0.000 claims description 57
- 238000003756 stirring Methods 0.000 claims description 43
- 239000007788 liquid Substances 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 20
- 239000002699 waste material Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 15
- 229910052751 metal Inorganic materials 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 15
- 230000003068 static effect Effects 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 229910001415 sodium ion Inorganic materials 0.000 claims description 7
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 11
- 238000007599 discharging Methods 0.000 description 9
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- 229910052708 sodium Inorganic materials 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000012295 chemical reaction liquid Substances 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 235000021588 free fatty acids Nutrition 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B13/00—Recovery of fats, fatty oils or fatty acids from waste materials
- C11B13/02—Recovery of fats, fatty oils or fatty acids from waste materials from soap stock
-
- 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
Landscapes
- 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)
Abstract
The application discloses a preparation method for preparing acidified oil from rice bran oil soapstock, which comprises the following steps: s1, nigre feeding: introducing soapstock into the homogenizing tank until the soapstock in the homogenizing tank is filled to a preset height; s2, dispersing and recombining: the heater is opened to heat the soapstock, the circulating pump is opened to pump the soapstock in the homogenizing tank into the jet flow diverter, and the soapstock is jetted onto the dispersing turntable through the jet flow diverter to be dispersed and recombined; s3, acidizing reaction: starting a conveying pump to pump soapstock in the homogenizing tank into the feeding tank, and introducing sulfuric acid to perform an acidification reaction to obtain a mixed solution; s4, standing and separating: and (3) introducing the mixed solution into an oil-water separation tank, standing for more than 2 hours, layering the mixed solution up and down to obtain acidified oil, and finally extracting the acidified oil to finish the preparation. The soapstock is sprayed onto the dispersing turntable to be dispersed and recombined by opening the circulating pump and the spray drainage device, so that the soapstock can be effectively homogenized, and the subsequent sulfuric acid and the soapstock can rapidly and thoroughly react.
Description
Technical Field
The application relates to the field of preparation of acidified oil, in particular to a preparation method for preparing acidified oil from rice bran oil soapstock.
Background
The rice bran oil is obtained after squeezing and solvent leaching, and the main components of the rice bran oil are rice bran oil, free fatty acid, oryzanol, bran wax and the like, so that alkali is added into the rice bran oil when oryzanol is produced in a factory, free fatty acid in the rice bran oil is neutralized to generate soapstock, and the soapstock is acidified to obtain an acidified liquid containing fatty acid and waste water containing sodium sulfate, and oryzanol is remained in the fatty acid.
The existing method for preparing the acidified oil from the soapstock of the rice bran oil is generally an intermittent acidification method, the soapstock is introduced into an acidification tank, water vapor is firstly used for returning, dilute sulfuric acid is added for uniform stirring, then standing is carried out for more than 2 hours, so that the liquid is layered, the upper layer is the acidified oil, and the lower layer is the wastewater containing sodium sulfate. However, the whole process of the method for preparing the acidified oil needs 6 hours, and about 10 tons of soapstock can be treated each time, so that the preparation efficiency is relatively low. In addition, since sodium ions in soapstock are not uniformly distributed, a long stirring reaction is often required to ensure that the reaction can be sufficiently performed, so that the time required for the reaction is prolonged, and the preparation efficiency is also severely reduced.
Disclosure of Invention
The application overcomes the defects in the prior art, and provides a preparation method for preparing acidified oil by using rice bran oil soapstock, which breaks up and reorganizes the soapstock in a homogenizing tank through a jet drainage device matched with a circulating pump, so that the soapstock can be effectively homogenized, subsequent sulfuric acid and the soapstock can rapidly and thoroughly react, the reaction time is effectively shortened, the reaction efficiency is improved, and the mixed liquid is kept stand in the oil-water separation tank and the homogenizing movement in the homogenizing tank is not affected by each other. In the process of standing and layering the mixed solution containing the acidified oil in the oil-water separation tank, the mixed solution can be scattered and recombined in the homogenizing tank, so that the production efficiency is greatly improved.
The technical scheme of the application is realized as follows:
a preparation method for preparing acidified oil from rice bran oil soapstock comprises the following steps:
s1, nigre feeding: introducing soapstock into a homogenizing tank provided with the jet drainage device until the soapstock in the homogenizing tank is filled to a preset height;
s2, dispersing and recombining: continuously introducing soapstock into the homogenizing tank, simultaneously opening a heater to heat the soapstock, opening a circulating pump to pump the soapstock in the homogenizing tank into an injection drainage device, injecting the soapstock into a dispersing turntable arranged in the tank body through the injection drainage device, and scattering and re-falling into the homogenizing tank through the rotation of the dispersing turntable; stopping feeding and continuously pumping and heating the soapstock when the soapstock in the homogenizing tank reaches a rated quantity;
s3, acidizing reaction: synchronously turning off the circulating pump and the heater, then starting the conveying pump to pump the soapstock in the homogenizing tank into the feeding tank, and introducing sulfuric acid into a sulfuric acid pipe on the feeding tank to match with the soapstock in the feeding tank for acidification reaction; after fluid after sulfuric acid and soapstock are subjected to acidification reaction flows into the shell of the dynamic-static mixer communicated with the feed tank, stirring the fluid by a stirring impeller arranged in the shell of the dynamic-static mixer to obtain mixed liquid containing acidified oil;
s4, standing and separating: introducing the mixed solution containing the acidified oil into an oil-water separation tank with a metal corrugated filler in advance, standing for more than 2 hours, enabling the mixed solution to be layered up and down to obtain waste liquid below the metal corrugated filler and the acidified oil above the metal corrugated filler, and finally extracting the acidified oil to finish the preparation.
In a further scheme, S3 further comprises the following steps: shutting down the delivery pump and stopping the sulfuric acid feed; and then introducing the waste liquid into the feeding tank to wash the inner wall of the feeding tank, and stirring the fluid obtained by washing the inner wall of the feeding tank by using a stirring impeller in the shell of the dynamic-static mixer to obtain the mixed liquid containing the acidified oil.
The inner wall of the feeding tank is washed, so that materials are prevented from remaining on the inner wall of the feeding tank, and waste of soapstock and sulfuric acid is reduced. And the liquid for flushing the inner wall of the feed tank is waste liquid obtained after standing, so that the waste is utilized, and the cost is saved.
In a further aspect, in S3, before the conveying pump is started to pump the soapstock in the homogenizing tank into the feeding tank, the method further includes the following steps: sampling soapstock in the homogenizing tank, measuring the sodium ion content in the soapstock, and thus truly introducing the consumption of sulfuric acid, wherein the sulfuric acid introduced into the feeding tank is dilute sulfuric acid with the concentration of 5-50%, and the dilute sulfuric acid is formed by mixing concentrated sulfuric acid with the concentration of 98% with the waste liquid.
Because the sodium content in each batch of soapstock is different, the sodium content in the whole batch of soapstock can be obtained by sampling and measuring the sodium content of the soapstock after the soapstock is homogenized in a homogenizing tank. Thus, the amount of sulfuric acid is actually introduced later. The method avoids the condition that too little sulfuric acid cannot react completely and also avoids waste caused by too much sulfuric acid.
In a further scheme, the jet flow diverter comprises a jet pipe and a nozzle for jetting fluid into the jet pipe, wherein the nozzle is arranged in the middle of the middle lower part of the jet pipe, and the top pipe orifice of the jet pipe is opposite to the dispersion turntable; in the step S2, the heater is simultaneously turned on to heat the soapstock, the circulating pump is turned on to pump the soapstock in the homogenizing tank into the jet flow diverter and the soapstock is jetted onto the dispersing turntable arranged in the tank body through the jet flow diverter, and the specific steps are as follows: and simultaneously, the heater is started to heat the soapstock, the circulating pump is started to pump the soapstock in the homogenizing tank into the jet flow diverter and jet the soapstock into the jet pipe through the nozzle in the jet flow diverter, so that a negative pressure area is formed below the outside of the nozzle, and the soapstock in the homogenizing tank is sucked upwards and is jetted onto the dispersing turntable arranged in the tank from the top pipe orifice of the jet pipe together.
Because the nozzle is arranged at the middle position of the middle lower part in the injection pipe, negative pressure is necessarily formed above the spray pipe when the soapstock is sprayed out by the nozzle, and then a high-pressure area is formed relatively below the spray pipe, the soapstock in the homogenizing tank body is sucked upwards and sprayed onto the dispersing turntable arranged in the tank body from the top pipe orifice of the injection pipe together, so that the circulating flow of the soapstock in the homogenizing tank is quickened, and the dispersing and recombining efficiency is improved.
In a further scheme, a plurality of drainage rib plates are arranged on the inner wall of the upper part of the injection pipe, and each drainage rib plate is longitudinally arranged in the injection pipe; the drainage edge plates extend from the inner wall of the injection pipe to a position close to the center of the injection port, and a space is reserved between the drainage edge plates, so that the top pipe orifice of the injection pipe is divided into a first fluid channel formed between every two adjacent drainage edge plates and a second fluid channel positioned at the center of the top pipe orifice by the drainage edge plates; the end of the drainage edge plate, which is positioned at the center of the jet orifice, forms a tip, the tip is a drainage edge line which is arranged from top to bottom, and the drainage edge line gradually approaches the inner wall of the jet pipe from top to bottom and is in arc transition; the specific steps in the step S2 are as follows: and the soapstock is continuously introduced into the homogenizing tank, the heater is opened to heat the soapstock, the circulating pump is opened to pump the soapstock in the homogenizing tank into the jet flow diverter and the soapstock is sprayed into the jet pipe through the nozzle in the jet flow diverter, so that a negative pressure area is formed below the nozzle to suck the soapstock in the homogenizing tank upwards and flow to the top pipe orifice of the jet pipe, and the soapstock is sprayed onto the dispersing turntable arranged in the tank body in a plurality of spraying directions by the first fluid channel formed between every two adjacent drainage rib plates and the second fluid channel positioned at the center of the top pipe orifice.
The top pipe orifices of the spray pipes are divided into the first fluid channels formed between every two adjacent drainage rib plates and the second fluid channels positioned at the center of the top pipe orifices, so that the spray direction of the soapstock is further developed, the spray angle and the spray direction are wider, and the impact and the dispersion of the fluid are further facilitated; still further, the drainage rib plate is located the water conservancy diversion crest line that this end formation of top mouth of pipe central point department, and this water conservancy diversion crest line is close to the injection pipe inner wall gradually from top to bottom and takes the arc transition for the fluid formation is further smooth guide in the drainage rib plate below is favorable to drawing forth the top mouth of pipe.
In a further scheme, the pipe diameter of the injection pipe gradually decreases from bottom to top along the height direction, and the bottom end of the injection pipe is provided with a drainage cover for assisting in guiding soapstock to enter the injection pipe, and the inner diameter of the drainage cover gradually decreases from bottom to top.
The pipe diameter of the injection pipe gradually decreases from bottom to top along the height direction, so that the pressure is gradually increased during fluid injection. And the drainage cover is arranged to collect the fluid and facilitate the fluid to be introduced into the injection pipe.
In a further scheme, a plurality of drainage grooves are formed in the inner side wall of the lower portion of the jet pipe.
In a further scheme, the dispersion carousel includes umbrella form carousel, from last a plurality of annular lug that down equipartition was in umbrella form carousel, and the diameter of a plurality of annular lugs is from top to bottom crescent, and umbrella form carousel rotates under the motor drive of installing at the homogeneity jar top. The contact area between the dispersing rotary table and the soapstock is enlarged, the soapstock dispersed by the dispersing rotary table falls down from the center to the periphery round by round to be mixed with other soapstock, so that the contact area between falling soapstock and other soapstock can be enlarged, and the soapstock homogenizing efficiency is further improved.
In a further scheme, the heater is a tube array heater which is arranged outside the homogenizing tank, a feed inlet of the tube array heater is communicated with the circulating pump through a soapstock feed pipe, and a discharge outlet of the tube array heater is communicated with the jet drainage device; in the step S2, the heater is simultaneously turned on to heat the soapstock, the circulating pump is turned on to pump the soapstock in the homogenizing tank into the jet flow diverter and the soapstock is jetted onto the dispersing turntable arranged in the tank body through the jet flow diverter, and the specific steps are as follows: the tube array heater is opened, steam for heating is introduced through a steam pipe on the tube array heater, the circulating pump is opened to pump soapstock in the homogenizing tank, and the soapstock is conveyed into the jet drainage device after being heated by the steam through the tube array heater and is jetted onto the dispersing turntable arranged in the tank body through the jet drainage device.
In the process of circulating conveying of the soapstock by the conveying pump, the soapstock is heated by the tube array heater, so that the heating time is saved, and the soapstock can be heated uniformly and rapidly.
In a further scheme, a dynamic guide plate is arranged in the shell of the dynamic-static mixer in front of the stirring blade along the flow direction of the fluid, and a guide hole is arranged on the dynamic guide plate and is obliquely arranged relative to the flow direction of the fluid; in the step S3, after the fluid after the sulfuric acid is matched with the nigre to carry out the acidification reaction flows into the shell of the dynamic and static mixer communicated with the feeding tank, the fluid is stirred by the stirring impeller arranged in the shell of the dynamic and static mixer to obtain the mixed liquid containing the acidified oil, and the specific steps are as follows: after the fluid after the sulfuric acid and the soapstock are subjected to the acidification reaction flows into the shell of the dynamic-static mixer communicated with the feed tank, the fluid is forced to impact the stirring impeller through the flow guide holes arranged in the shell of the dynamic-static mixer so as to enable the stirring impeller to rotate, and the stirring impeller stirs the fluid to obtain mixed liquid containing the acidified oil.
Through being provided with the water conservancy diversion hole, fluid impact impeller when coming through the water conservancy diversion hole makes impeller rotate stirring, and impeller does not need other drive assembly to drive. And as long as fluid passes through, the stirring impeller continuously rotates, and no fluid passes through, and the stirring impeller automatically stops rotating.
The design starting point, the idea and the beneficial effects of the application adopting the technical scheme are as follows:
1. the soapstock in the homogenizing tank is pumped into the jet flow diverter through the opening circulating pump and is jetted onto the dispersing turntable arranged in the tank body through the jet flow diverter, and then is scattered and falls back into the homogenizing tank again through the rotation of the dispersing turntable, so that the soapstock can be effectively homogenized, and the soapstock can be sufficiently and uniformly heated by being matched with the heating of the heater, so that preparation is made for the rapid and full reaction of the subsequent sulfuric acid and the soapstock, the rapid and thorough reaction of the subsequent sulfuric acid and the soapstock can be realized, the reaction time is effectively shortened, and the reaction efficiency is improved.
2. As the soapstock is pumped by the delivery pump when entering the feeding tank to react with the sulfuric acid, the soapstock and the sulfuric acid are collided and mixed together at high speed, thereby effectively improving the reaction efficiency. And the fluid after the soapstock and the sulfuric acid are mixed is stirred by the stirring impeller, so that unreacted soapstock and sulfuric acid can fully and thoroughly participate in the reaction, the acidification rate is greatly improved, and the waste of the soapstock and the sulfuric acid is reduced.
3. The metal corrugated filler in the oil-water separation tank can ensure that the acidizing fluid and the wastewater are thoroughly separated, so that the acidizing fluid is prevented from being discharged along with the wastewater, and the production rate of the acidizing fluid is greatly improved.
4. Since the mixed solution flows into the oil-water separation tank for standing, and the movement in the homogenizing tank is not affected. In the process of standing and layering of the mixed solution containing the acidified oil in the oil-water separation tank, the operations of S1 and S2 can be repeated in the homogenizing tank without mutual influence, and the production efficiency is greatly improved.
Drawings
FIG. 1 is a front view of an apparatus for preparing acidified oil from rice bran oil soapstock;
FIG. 2 is a front cross-sectional view of an apparatus for preparing acidified oil from rice bran oil soapstock;
FIG. 3 is a schematic structural view of a dispersing unit;
fig. 4 is a front cross-sectional view of the dispersion unit;
FIG. 5 is a schematic top view of a jet flow diverter;
FIG. 6 is a schematic diagram of the structure of an acidification reaction unit;
FIG. 7 is a front cross-sectional view of an acidification reaction unit;
FIG. 8 is a flow chart of a process for preparing an acidified oil from rice bran oil soapstock.
The reference numerals are as follows: 1-nigre homogenizing unit, 101-homogenizing tank, 102-circulating pump, 103-heating unit, 1031-heater body, 1032-steam pipe, 1033-thermometer, 104-dispersing unit, 1041-jet diverter, 10411-jet pipe, 10412-nozzle, 10413-diverter cap, 1042-dispersing turntable, 10421-umbrella turntable, 10422-annular bump, 105-nigre discharge pipe, 106-horizontal pipe, 107-nigre feed pipe, 108-second nigre feed pipe, 2-acidification reaction unit, 201-acidification reactor, 2011-feed tank, 2012-mixing tank, 2013-sulfuric acid pipe, 202-dynamic mixer, 2021-housing, 2022-dynamic deflector, 2023-stirring impeller, 2024-static mixing chamber, 3-oil-water separator, 301-separator body, 302-metal corrugated filler, 303-wastewater pipe, 4-transfer pump, 5-first nigre, 6-reaction liquid transfer pipe, 7-sulfuric acid tank, 8-diversion ridge 9-second fluid, 10-flow channel, ridge channel, 11-flow chute, 12-flow channel.
Description of the embodiments
In order that the above-recited objects, features and advantages of the present application will be more clearly understood, a more particular description of the application will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited to the specific embodiments disclosed below.
The specific embodiments of the present application are as follows:
examples: as shown in fig. 1 to 7, the application provides a device for preparing acidified oil from rice bran oil soapstock, which comprises a soapstock homogenizing unit 1 for homogenizing soapstock, an acidification reaction unit 2 for mixing sulfuric acid and soapstock, an oil-water separator 3 for separating the acidified oil and wastewater in reaction products, wherein the soapstock homogenizing unit 1 comprises a homogenizing tank 101, a circulating pump 102 for driving the soapstock in the homogenizing tank 101 to circularly flow, a heating unit 103 for heating the soapstock and a dispersing unit 104 for dispersing and recombining the soapstock, and the top of the homogenizing tank 101 is communicated with a feed pipe.
As shown in fig. 1 and 2, the input end of the circulating pump 102 is communicated with the bottom of the homogenizing tank 101 through a soapstock discharging pipe 105 and a transverse pipe 106, the other end of the transverse pipe 106 is communicated with the input end of the conveying pump 4, two electromagnetic valves are symmetrically arranged on the transverse pipe 106 relative to the soapstock discharging pipe 105, one electromagnetic valve is arranged on a pipeline of the transverse pipe 106 between the soapstock discharging pipe 105 and the circulating pump 101 and used for controlling the opening and closing of the pipeline between the transverse pipe 106 and the soapstock discharging pipe 105 and the circulating pump (101), and the other electromagnetic valve is arranged on a pipeline of the transverse pipe 106 between the soapstock discharging pipe 105 and the conveying pump 4 and used for controlling the opening and closing of the pipeline of the transverse pipe 106 between the soapstock discharging pipe 105 and the conveying pump 4. The output end of the circulation pump 102 is communicated with the feeding port of the heating unit 103 through the soapstock feeding pipe 107, and the discharging port of the heating unit 103 is communicated with the side surface of the homogenizing tank 101 through the second soapstock feeding pipe 108, and the circulation pump 102 can enable soapstock in the homogenizing tank 101 to be in a circulating flow state, so that the soapstock can be sufficiently homogenized, and meanwhile, the soapstock can be sufficiently and uniformly heated, so that preparation is made for subsequent reactions.
The heating unit 103 is a tube array heater, and the heating unit 103 comprises a heater body 1031, a steam tube 1032 communicated with the heater body 1301, and a thermometer 1033 arranged on the homogenizing tank 101, wherein a neat valve is arranged on the steam tube 1032, the tube array heater can enable soapstock to be heated uniformly and rapidly, heating time is saved, and the temperature of the soapstock can be reliably controlled to be in a required temperature range through the arranged thermometer 1033. Meanwhile, the feeding port of the heater body 1031 is communicated with the soapstock feeding pipe 107, and the discharging port of the heater body 1031 is communicated with the second soapstock feeding pipe 108.
As shown in fig. 2, the dispersing unit 104 includes a jet flow diverter 1041, a dispersing turntable 1042 located right above the jet flow diverter 1041, and the dispersing turntable 1042 is driven by a motor installed at the top of the homogenizing tank 101, the motor drives the dispersing turntable 1042 to rotate rapidly to fully disperse the soapstock sprayed to the bottom of the dispersing turntable 1042, then the soapstock falls into other soapstocks downwards, so that the soapstock is thoroughly dispersed and recombined, and then dispersed and recombined, and the circulation is continuously performed, thereby greatly improving the effect of homogenizing the soapstock and saving the homogenizing time of the soapstock.
Referring to fig. 3-5, the jet flow diverter 1041 includes a jet pipe 10411 fixedly connected to the homogenizing tank 101, a nozzle 10412 fixedly connected to the jet pipe 10411, the pipe diameter of the jet pipe 10411 gradually decreases from bottom to top, the bottom end of the nozzle 10412 is communicated with the second soapstock feeding pipe 108, a flow diverter cover 10413 for assisting in guiding soapstock into the jet pipe 10411 is fixedly connected to the bottom end of the jet pipe 10411, and the inner diameter of the flow diverter cover 10413 gradually decreases from bottom to top. And the axes of the homogenizing tank 101, the injection tube 10411, and the nozzle 10412 coincide.
Meanwhile, the nozzle 10412 is arranged in the middle of the middle lower part in the injection pipe 10411; the injection pipe 10411 is internally provided with a drainage mechanism for adjusting the pressure of fluid in the injection pipe 10411, the drainage mechanism comprises an injection unit positioned at the pipe orifice at the top of the injection pipe 10411, the injection unit is a plurality of drainage rib plates 8 uniformly connected to the inner wall of the upper part of the injection pipe 10411, and each drainage rib plate 8 is longitudinally arranged in the injection pipe 10411; specifically, the drainage rib plate 8 and the injection pipe 10411 are integrally formed, the cross section of the drainage rib plate 8 is fan-shaped, and the arc surface of the drainage rib plate 8 is located at the inner wall of the injection pipe 10411 and coincides with the inner wall of the injection pipe 10411. In the radial direction, the drainage rib plates 8 extend from the inner wall of the injection pipe 10411 to a position close to the center of the injection port, and a space is reserved between the drainage rib plates 8, so that the injection port is divided into a first fluid channel 9 formed between every two adjacent drainage rib plates 8 and a second fluid channel 10 positioned at the center of the injection port; the end of the drainage rib plate 8, which is positioned at the center of the jet orifice, forms a tip, the tip is a drainage rib line 11 which is arranged from top to bottom, and the drainage rib line 11 gradually approaches the inner wall of the jet tube 10411 from top to bottom and is in arc transition.
As shown in fig. 4, the drainage mechanism 3 further comprises a drainage unit positioned at the bottom of the injection pipe 10411, and the drainage unit is a plurality of drainage grooves 12 uniformly concavely arranged on the inner side wall of the lower part of the injection pipe 10411 along the circumferential direction; as shown in fig. 4, the width and depth of the drainage groove 12 gradually decrease from bottom to top along the length direction of the injection pipe 10411, and a smooth transition is formed between the top of the drainage groove 12 and the inner wall of the injection pipe 10411, and the boundary line between the top of the drainage groove 12 and the inner wall of the injection pipe 10411 is an arc line.
As shown in fig. 3, the dispersing turntable 1042 includes an umbrella turntable 10421, a plurality of annular protruding blocks 10422 uniformly distributed in the umbrella turntable 10421 from top to bottom, and the diameters of the plurality of annular protruding blocks 10422 gradually increase from top to bottom, and the umbrella turntable 10421 rotates under the driving of a motor installed at the top of the homogenizing tank 101, so that the soapstock dispersed by the dispersing turntable 1042 falls down from the center to the periphery round to be mixed with other soapstocks, thereby enlarging the contact area between the falling soapstock and other soapstocks and further improving the homogenizing efficiency of the soapstock.
As shown in fig. 6 and 7, the acidification reaction unit 2 includes an acidification reactor 201 for introducing sulfuric acid to react with soapstock, and a dynamic-static mixer 202 which is communicated with the acidification reactor 201 and is used for receiving fluid obtained by the reaction of the acidification reactor 201, so that materials generated after the reaction in the acidification reactor 201 can enter the dynamic-static mixer 202 to be deeply mixed, thereby ensuring that the reaction can be thoroughly and fully performed, and greatly improving the acidification rate.
Specifically, the acidification reactor 201 includes a feed tank 2011, a mixing tank 2012 communicated with the feed tank 2011, a sulfuric acid pipe 2013 is communicated with the feed tank 2011, a sulfuric acid tank 7 is communicated with the other end of the sulfuric acid pipe 2013, a part of the feed tank 2011, which is close to the injection mixing tank 2012, is cone-shaped with gradually reduced inner diameter, one end of the first soapstock feed pipe 5, which is close to the acidification reactor 201, extends to the inside of the injection mixing tank 2012, and the injection mixing tank 2012 is communicated with the dynamic and static mixer 202, so that soapstock can drive sulfuric acid entering from the sulfuric acid pipe 2013 to be injected into the injection mixing tank 2012 at a high speed when being sprayed out from the first soapstock feed pipe 5, and the soapstock and the sulfuric acid can be collided and mixed together at a high speed, and the efficiency of the mixing reaction can be effectively improved.
The dynamic-static mixer 202 includes a housing 2021, and a dynamic baffle 2022 fixedly connected between inner sidewalls of the housing 2021, wherein a plurality of inclined baffle holes are densely distributed on the dynamic baffle 2022, and two ends of the baffle holes are high at left end and low at right end, and the baffle holes are inclined relative to the fluid flowing direction. Two fixing rods are symmetrically and fixedly connected between the inner walls of the shell 2021, a stirring impeller 2023 is rotationally connected between the two fixing rods, a cavity on the right side of the stirring impeller 2023 is a static mixing cavity 2024, unreacted soapstock and sulfuric acid possibly contained in the materials after reaction continue to carry out mixing reaction when the materials flow through the dynamic guide plate 2022, the stirring impeller 2023 is impacted and the stirring impeller 2023 is driven to rotate after the materials pass through the dynamic guide plate 2022, so that the materials are stirred, the unreacted soapstock and sulfuric acid possibly contained carry out further mixing reaction, then the materials flow into the static mixing cavity 2024 for a certain time, the unreacted soapstock and sulfuric acid possibly contained in the materials can be thoroughly mixed, the acidification rate is greatly improved, and the waste of the soapstock and the sulfuric acid is reduced.
The oil-water separator 3 comprises a separator body 301, a metal corrugated filler 302 arranged in the separator body 301, a waste water pipe 303 communicated with the bottom of the separator body 301 and an acidizing fluid pipe 304 communicated with the separator body 301, wherein the water outlet end of the waste water pipe 303 is three-fourths of the height of the separator body 301, the acidizing fluid and the waste water can be effectively separated through the arranged metal corrugated filler 302, and meanwhile, the waste water in the separator body 301 can be at a stable height due to the fact that the water outlet end of the waste water pipe 303 is higher, so that the acidizing fluid in the material entering subsequently can be separated under the action of the metal corrugated filler 302, and the separation effect is effectively improved.
The soapstock homogenizing unit 1 is communicated with the acidification reaction unit 2 through a conveying pump 4 and a first soapstock feeding pipe 5, and the acidification reaction unit 2 is communicated with the oil-water separator 3 through a reaction liquid conveying pipe 6.
In operation, the soapstock is introduced into the homogenizing tank 101, and then the circulation pump 102 is started to pump the soapstock in the homogenizing tank 101. The soapstock sequentially circulates through the soapstock discharging pipe 105, the transverse pipe 106, the soapstock feeding pipe 107, the heater body 1031, the second soapstock feeding pipe 108 and the dispersing unit 104, and the steam pipe 1032 feeds steam into the heater body 1031, so that the soapstock flowing through the heater body 1031 can be rapidly and uniformly heated, and meanwhile, the temperature of the soapstock is monitored through the thermometer 1033, and the temperature of the soapstock is ensured to be in a proper range.
The soapstock entering the dispersing unit 104 is sprayed into the spraying pipe 10411 at a high speed through the nozzle 10412, and at this time, negative pressure is formed at the top end of the spraying pipe 10411, and a high pressure area is formed at the bottom end of the spraying pipe 10411. Soapstock in and near the drain cover 10413 is sucked into the jet pipe 10411 under the high-low pressure difference of the jet pipe 10411, and then is sprayed toward the bottom of the umbrella-shaped turntable 10421. And because of the drainage groove 12, the liquid inlet area is enlarged, and the soapstock is easier to guide into the spraying pipe 10411. In the same way, the existence of the drainage rib plates 8 reduces the area of the jet orifice, improves the jet pressure, and guides the soapstock in the jet direction at the same time, so that the soapstock forms a central jet column and jet branches which are positioned around the jet column and have more dispersed directions.
At the same time, the umbrella-shaped turntable 10421 rotates at a high speed under the drive of the motor, so that the soapstock sprayed to the umbrella-shaped turntable 10421 is fully dispersed by matching with the annular convex block 10422, and then the dispersed soapstock is re-circulated into the homogenizing tank. The above operations are repeated to continuously break up and reorganize the soapstock, the soapstock is fully homogenized by circulating and reciprocating, sodium ions in the soapstock can be in a uniform distribution state, then the circulating pump 102 is closed and the conveying pump 4 is started, the homogenized soapstock is conveyed into the injection mixing tank 2012 through the conveying pump 4 and the first soapstock feeding pipe 5, meanwhile, sulfuric acid in the sulfuric acid tank 7 is conveyed into the feeding tank 2011 through the sulfuric acid pipe 2013, and the sulfuric acid is collided and mixed with the soapstock at a high speed when being sucked into the injection mixing tank 2012 so as to carry out acidification reaction.
The fluid generated after the acidification reaction flows through the diversion holes on the dynamic diversion plate 2022. Under the guidance of the diversion holes, the fluid impacts the stirring impeller 2023 to enable the stirring impeller 2023 to rotate so as to stir the fluid, so that unreacted soapstock and sulfuric acid possibly contained in the fluid are further reacted, then the fluid flows into the static mixing cavity 2024 to stand for a period of time, complete reaction of the soapstock and the sulfuric acid is guaranteed, then the fluid flows into the separator body 301 through the reaction liquid conveying pipe 6, acidified liquid in materials and waste water are separated under the action of the metal corrugated filler 302, acidified oil is discharged through the acidified liquid pipe 304, waste water is discharged through the waste water pipe 303, and the preparation of the acidified oil is completed.
Based on the above-mentioned apparatus, as shown in fig. 8, the embodiment also provides a method for preparing acidified oil from rice bran oil soapstock, which comprises the following steps:
s1, nigre feeding: introducing soapstock into a homogenizing tank 101 provided with a jet drainage device 1041 until the soapstock in the homogenizing tank 101 is filled to a preset height;
s2, dispersing and recombining: the soapstock is continuously introduced into the homogenizing tank 101, the heater is turned on to heat the soapstock, the circulating pump 102 is turned on to pump the soapstock in the homogenizing tank 101 into the jet flow diverter 1041, the soapstock is jetted onto the dispersing turntable 1042 arranged in the tank body through the jet flow diverter 1041, and the soapstock is scattered and falls back into the homogenizing tank 101 again through the rotation of the dispersing turntable 1042; and stopping feeding and continuously pumping and heating the soapstock when the soapstock in the homogenizing tank 101 reaches a rated quantity;
s3, acidizing reaction: the circulating pump 102 and the heater are synchronously turned off, then the conveying pump 4 is started to pump the soapstock in the homogenizing tank 101 into the feeding tank 2011, and sulfuric acid is introduced into a sulfuric acid pipe 2013 on the feeding tank 2011 to match with the soapstock in the feeding tank 2011 for acidification reaction; after the fluid after the sulfuric acid and soapstock are subjected to acidification reaction flows into the shell 2021 of the dynamic and static mixer 202 communicated with the feed tank 2011, the fluid is stirred by a stirring impeller 2023 arranged in the shell 2021 of the dynamic and static mixer 202 to obtain a mixed solution containing acidified oil;
s4, standing and separating: and (3) introducing the mixed solution containing the acidizing oil into an oil-water separation tank with the metal corrugated filler 302 preset therein, standing for more than 2 hours, enabling the mixed solution to be layered up and down to obtain waste liquid below the metal corrugated filler 302 and the acidizing oil above the metal corrugated filler 302, and finally extracting the acidizing oil to finish the preparation.
The specific steps of S2 are as follows: the soapstock is continuously introduced into the homogenizing tank 101, the tube array heater is opened, steam for heating is introduced through the steam tube 1032 on the tube array heater, the circulating pump 102 is opened to pump the soapstock in the homogenizing tank 101, the soapstock is conveyed into the jet flow diverter 1041 after being heated by the steam through the tube array heater and is sprayed into the jet tube 10411 through the nozzle 10412 in the jet flow diverter 1041, a negative pressure area is formed below the nozzle 10412, so that the soapstock in the homogenizing tank 101 is sucked upwards and is introduced into the top tube orifice of the jet tube 10411, and the soapstock is sprayed onto the dispersing turntable 1042 arranged in the tank body in a plurality of spraying directions by the first fluid channel 9 formed between every two adjacent flow diverter plates and the second fluid channel 10 positioned in the center of the top tube orifice, and is scattered and falls back into the homogenizing tank 101 again through the dispersing turntable 1042 in a rotating way; and stopping feeding when the soapstock in the homogenizing tank 101 reaches a rated amount, and continuously pumping and heating the soapstock.
Since the dynamic flow guide plate 2022 is disposed in front of the stirring blades in the flow direction of the fluid in the housing 2021 of the static-dynamic mixer 202, the dynamic flow guide plate 2022 is provided with flow guide holes, and the flow guide holes are disposed obliquely with respect to the flow direction of the fluid. In S3, after the fluid after the sulfuric acid and the nigre perform the acidification reaction flows into the housing 2021 of the dynamic and static mixer 202 that is communicated with the feed tank 2011, the specific steps of stirring the fluid by the stirring impeller 2023 installed inside the housing 2021 of the dynamic and static mixer 202 to obtain the mixed solution containing the acidified oil are as follows: after the fluid after the sulfuric acid and the soapstock are subjected to the acidification reaction flows into the shell 2021 of the dynamic and static mixer 202 communicated with the feed tank 2011, the fluid is forced to impact the stirring impeller 2023 through the flow guide holes arranged in the shell 2021 of the dynamic and static mixer 202, so that the stirring impeller 2023 rotates, and the stirring impeller 2023 stirs the fluid to obtain the mixed liquid containing the acidified oil.
In order to reduce the waste of soapstock and sulfuric acid, S3 further comprises the following steps: shutting down the transfer pump 4 and stopping the sulfuric acid feed; the waste liquid is then introduced into the feed tank 2011 to flush the inner wall of the feed tank 2011, and the fluid obtained by flushing the inner wall of the feed tank 2011 is stirred by the stirring impeller 2023 inside the housing 2021 of the dynamic-static mixer 202 to obtain a mixed liquid containing the acidified oil. The inner wall of the feed tank 2011 is washed, so that materials are prevented from remaining on the inner wall of the feed tank 2011, and waste of soapstock and sulfuric acid is reduced. And the liquid for flushing the inner wall of the feed tank 2011 is waste liquid obtained after standing, so that the waste is utilized, and the cost is saved.
Meanwhile, in S3, before the transfer pump 4 is started to pump the soapstock in the homogenizing tank 101 into the feed tank 2011, the following steps are further included: the soapstock in the homogenizing tank 101 is sampled and the sodium ion content therein is measured to determine the amount of sulfuric acid subsequently introduced. Because the sodium content of each batch of soapstock varies, the sodium content of the entire batch of soapstock can be obtained by sampling the soapstock after homogenization in the homogenizing tank 101 to measure the sodium content. Thereby determining the amount of sulfuric acid to be subsequently introduced. The method avoids the condition that too little sulfuric acid cannot react completely and also avoids waste caused by too much sulfuric acid.
By way of example, assuming a sodium ion content of 100% in the soapstock, 100 parts by weight of soapstock would require the introduction of 15 parts by weight of 98% strength concentrated sulfuric acid. By measuring the sodium ion content of the soapstock, the amount of concentrated sulfuric acid to be introduced into the soapstock with a concentration of 98% can be correspondingly obtained. In this embodiment, the sulfuric acid introduced into the feed tank 2011 is diluted sulfuric acid with a concentration of 5-50%, and the diluted sulfuric acid is formed by mixing concentrated sulfuric acid with a concentration of 98% with the waste liquid. Specifically, the concentration of the dilute sulfuric acid in this example was 30%.
The application and its embodiments have been described above by way of illustration and not limitation, and the application is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present application.
Claims (8)
1. A preparation method for preparing acidified oil from rice bran oil soapstock is characterized by comprising the following steps: the method comprises the following steps:
s1, nigre feeding: introducing soapstock into a homogenizing tank provided with the jet drainage device until the soapstock in the homogenizing tank is filled to a preset height;
s2, dispersing and recombining: continuously introducing soapstock into the homogenizing tank, simultaneously opening a heater to heat the soapstock, opening a circulating pump to pump the soapstock in the homogenizing tank into an injection drainage device, injecting the soapstock into a dispersing turntable arranged in the tank body through the injection drainage device, and scattering and re-falling into the homogenizing tank through the rotation of the dispersing turntable; stopping feeding and continuously pumping and heating the soapstock when the soapstock in the homogenizing tank reaches a rated quantity; the spray drainage device comprises a spray pipe and a nozzle used for spraying fluid into the spray pipe, wherein the nozzle is arranged at the middle position of the middle lower part in the spray pipe, and the top pipe orifice of the spray pipe is opposite to the dispersion turntable; the specific steps of simultaneously opening the heater to heat the soapstock and opening the circulating pump to pump the soapstock in the homogenizing tank into the jet flow diverter and jetting the soapstock onto the dispersing turntable arranged in the tank body through the jet flow diverter are as follows: simultaneously, a heater is opened to heat soapstock, a circulating pump is opened to pump the soapstock in the homogenizing tank into an injection drainage device and the soapstock is sprayed into an injection pipe through a nozzle in the injection drainage device, so that a negative pressure area is formed below the outside of the nozzle, and the soapstock in the homogenizing tank is sucked upwards and sprayed onto a dispersion turntable arranged in the tank from a top pipe orifice of the injection pipe together; the inner wall of the upper part of the injection pipe is provided with a plurality of drainage rib plates, and each drainage rib plate is longitudinally arranged in the injection pipe; the drainage edge plates extend from the inner wall of the injection pipe to a position close to the center of the injection port, and a space is reserved between the drainage edge plates, so that the top pipe orifice of the injection pipe is divided into a first fluid channel formed between every two adjacent drainage edge plates and a second fluid channel positioned at the center of the top pipe orifice by the drainage edge plates; the end of the drainage edge plate, which is positioned at the center of the jet orifice, forms a tip, the tip is a drainage edge line which is arranged from top to bottom, and the drainage edge line gradually approaches the inner wall of the jet pipe from top to bottom and is in arc transition; the soapstock is continuously introduced into the homogenizing tank, the heater is opened to heat the soapstock, the circulating pump is opened to pump the soapstock in the homogenizing tank into the jet flow diverter and the soapstock is sprayed into the jet pipe through the nozzle in the jet flow diverter, so that a negative pressure area is formed below the nozzle to suck the soapstock in the homogenizing tank upwards and flow the soapstock to the top pipe orifice of the jet pipe, and the soapstock is sprayed onto a dispersion turntable arranged in the tank body in a plurality of spraying directions by a first fluid channel formed between every two adjacent drainage rib plates and a second fluid channel positioned at the center of the top pipe orifice;
s3, acidizing reaction: synchronously turning off the circulating pump and the heater, then starting the conveying pump to pump the soapstock in the homogenizing tank into the feeding tank, and introducing sulfuric acid into a sulfuric acid pipe on the feeding tank to match with the soapstock in the feeding tank for acidification reaction; after fluid after sulfuric acid and soapstock are subjected to acidification reaction flows into the shell of the dynamic-static mixer communicated with the feed tank, stirring the fluid by a stirring impeller arranged in the shell of the dynamic-static mixer to obtain mixed liquid containing acidified oil;
s4, standing and separating: introducing the mixed solution containing the acidified oil into an oil-water separation tank with a metal corrugated filler in advance, standing for more than 2 hours, enabling the mixed solution to be layered up and down to obtain waste liquid below the metal corrugated filler and the acidified oil above the metal corrugated filler, and finally extracting the acidified oil to finish the preparation.
2. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: s3, further comprising the following steps: shutting down the delivery pump and stopping the sulfuric acid feed; and then introducing the waste liquid into the feeding tank to wash the inner wall of the feeding tank, and stirring the fluid obtained by washing the inner wall of the feeding tank by using a stirring impeller in the shell of the dynamic-static mixer to obtain the mixed liquid containing the acidified oil.
3. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: s3, before the conveying pump is started to pump the soapstock in the homogenizing tank into the feeding tank, the method further comprises the following steps of: sampling soapstock in the homogenizing tank, measuring the sodium ion content in the soapstock, and thus truly introducing the consumption of sulfuric acid, wherein the sulfuric acid introduced into the feeding tank is dilute sulfuric acid with the concentration of 5-50%, and the dilute sulfuric acid is formed by mixing concentrated sulfuric acid with the concentration of 98% with the waste liquid.
4. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: the pipe diameter of the injection pipe gradually decreases from bottom to top along the height direction, and the bottom end of the injection pipe is provided with a drainage cover for assisting in guiding soapstock to enter the injection pipe, and the inner diameter of the drainage cover gradually decreases from bottom to top.
5. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: the inner side wall of the lower part of the jet pipe is provided with a plurality of drainage grooves.
6. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: the dispersion carousel includes umbrella form carousel, from a plurality of annular lug down equipartition in umbrella form carousel, and the diameter of a plurality of annular lug from top to bottom increases gradually, and umbrella form carousel rotates under the motor drive of installing at the homogeneity jar top.
7. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: the heater is a tube array heater which is arranged outside the homogenizing tank, a feed inlet of the tube array heater is communicated with the circulating pump through a soapstock feed pipe, and a discharge outlet of the tube array heater is communicated with the jet drainage device; in the step S2, the heater is simultaneously turned on to heat the soapstock, the circulating pump is turned on to pump the soapstock in the homogenizing tank into the jet flow diverter and the soapstock is jetted onto the dispersing turntable arranged in the tank body through the jet flow diverter, and the specific steps are as follows: the tube array heater is opened, steam for heating is introduced through a steam pipe on the tube array heater, the circulating pump is opened to pump soapstock in the homogenizing tank, and the soapstock is conveyed into the jet drainage device after being heated by the steam through the tube array heater and is jetted onto the dispersing turntable arranged in the tank body through the jet drainage device.
8. The process for preparing acidified oil from soapstock of rice bran oil according to claim 1, wherein the process comprises the steps of: a dynamic guide plate is arranged in the shell of the dynamic-static mixer in front of the stirring blades along the flow direction of the fluid, a guide hole is arranged on the dynamic guide plate, and the guide hole is obliquely arranged relative to the flow direction of the fluid; in the step S3, after the fluid after the sulfuric acid is matched with the nigre to carry out the acidification reaction flows into the shell of the dynamic and static mixer communicated with the feeding tank, the fluid is stirred by the stirring impeller arranged in the shell of the dynamic and static mixer to obtain the mixed liquid containing the acidified oil, and the specific steps are as follows: after the fluid after the sulfuric acid and the soapstock are subjected to the acidification reaction flows into the shell of the dynamic-static mixer communicated with the feed tank, the fluid is forced to impact the stirring impeller through the flow guide holes arranged in the shell of the dynamic-static mixer so as to enable the stirring impeller to rotate, and the stirring impeller stirs the fluid to obtain mixed liquid containing the acidified oil.
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