CN104928020A - Subcritical production method for peony seed oil extraction - Google Patents
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Abstract
The invention relates to the technical field of peony seed oil extraction, in particular to a subcritical production method for peony seed oil extraction. The subcritical production method comprising the following steps: (1) peeling peony seeds and crushing; (2) completing primary resolving; (3) completing secondary resolving; (4) preparing peony seeds crude oil; (5) degumming through a hydration method; (6) deacidifying through a high temperature sparse soda method; (7) decolorizing with activated clay; (8) performing steam distillation for deodorization to obtain finished oil. According the subcritical production method, mass production of the peony seeds is realized, and not only are solvent consumption and production cost low, but also the quality of obtained meal is good, so that residues are fully utilized, and resources are saved. The current subcritical extraction technology is an efficient, low-consumption, environment-friendly and safe extraction technology with a wide application prospect, is widely applied to extraction and separation of pharmaceutical intermediates, fat-soluble pigments and volatile flavor and fragrance, is in a leading level in the domestic extraction industry, and represents the latest technological development direction.
Description
Technical field
The present invention relates to peony seed oil extractive technique field, specifically a kind of production method utilizing sub critical extraction peony seed oil.
Background technology
Peony seeds is the elite crystallization of peony plant, except having passed on all characteristics that tree peony itself has, also has medicine and the nutritive value of oneself uniqueness.Show through grease authoritative department Southern Yangtze University and the test of Chinese grain and oil quality Supervision Test Center Deng Duojia professional institution, peony seed oil unsaturated fatty acid content reaches more than 90%, especially estimable is wherein polyunsaturated fatty acid-alpha-linolenic acid content more than 40%, be 140 times of sweet oil, it is " oil best in the world " that assayer exclaims this.And that develop peony seed oil series product at first is " father of peony oil " Mr. Zhao Xiaoqing, he is through the effort of more than ten years and research, take the lead in the world making a breakthrough in " peony oil and serial deep processed product thereof " field, set up Article 1 peony oil production line in the world.Its product obtains health ministry " new resource food " license in March, 2011, and from then on peony oil becomes the another rare food resource of the mankind.
The discovery of peony seed oil and exploitation, can be described as a milestone event in tree peony industrial field.Along with the development prospect of peony seed oil is wide, more people put in the production of peony seed oil, but the production method of peony seed oil mainly uses supercritical CO
2abstraction technique, although supercritical CO
2abstraction technique is ideal method, have the advantages such as extracting power is strong, extraction yield is high, superior product quality, but just can must carry out under the ultra-high voltage state of more than 25Mpa, the amplification of equipment useful volume of high pressure limitation.
Summary of the invention
The present invention in order to solve need badly at present a kind of efficient, low consumption, scale operation peony seed oil abstraction technique to replace mechanical expression method, supercritical CO
2deng abstraction technique, provide a kind of production method of sub critical extraction peony seed oil.
The present invention adopts following technical scheme to realize:
A production method for sub critical extraction peony seed oil, comprises the steps:
(1), peony seeds peeling, load in extractor after pulverizing, start and stir, make material in still be tending towards smooth; Open vacuum tightness in vacuum pump adjustment extractor and, to-0.02 ~-0.08Mpa, inject subcritical fluids R134a(1,1,1,2-Tetrafluoroethane) as solvent, mix with raw material stirring until liquid level exceeds raw material; In control extractor, extraction temperature is at 40 ~ 45 DEG C, and pressure is 0.3 ~ 0.7Mpa, and immersion extraction time is 120 ~ 150min; Carry out supersound process while soaking extraction, process 1 ~ 7min at every turn, interval 2 ~ 10 minutes, after starting ultrasonic device, positive and negative each stirring 1/6 week every 10 minutes, iterative cycles like this; After having extracted, close ultrasonic, be separated solid, liquid phase, liquid-phase mixing liquid is delivered into temporary storage tank; Add solvent in solid phase waste residue and repeat above-mentioned immersion extraction, ultrasonic and separation solid, liquid phase step, re-extract 3 ~ 6 times, each time of soaking extraction is 30 ~ 60min.
(2), rely on pressure and solvent pump, the liquid-phase mixing liquid in temporary storage tank is through being pressed into one-level extraction-container from processing filters; Liquid-phase mixing liquid iterates through tubular heat exchanger, and under the pressure of 40 ~ 60 DEG C and 0.3 ~ 0.7Mpa, the solvent evaporates in liquid-phase mixing liquid enters solvent recovering system, and liquid extracting solution stays in one-level extraction-container; As the Pressure Drop to 0.1 in one-level extraction-container ~ 0.2Mpa, complete one-level and resolve.
(3) secondary extraction-container delivered to by the liquid extracting solution, through one-level parsing initial gross separation, carry out injection at kettle top through injector and diffuse to form tiny liquid pearl, under the pressure of 40 ~ 60 DEG C and 0.3 ~ 0.7Mpa, the solvent residued in tiny liquid pearl is evaporated further in from top to bottom by the process of jacketed heat exchanger; When the Pressure Drop in secondary extraction-container is to 0Mpa, start vacuum pump, when being-0.02 ~-0.08Mpa to vacuum tightness, completing secondary and resolve.
(4), by secondary extraction-container extracting solution be delivered in whizzer and carry out two times centrifugal, centrifugal speed is with 6700r/min, and centrifugation time is 10 ~ 20min, opens vacuum pump after centrifugal, is pressed into by supernatant liquor in hold-up vessel, obtains peony seeds crude oil.
(5), aquation method is come unstuck: start and stir, controlling crude oil temperature in extractor is 45 ~ 50 DEG C, add the sodium-chlor boiling water that oil weighs 4%, concentration is 20%, rapid stirring 15 ~ 20min, oil temperature is risen to 75 ~ 80 DEG C, rapid stirring 30 ~ 35min, insulation leaves standstill 6 ~ 7h, be separated removing lower layer of water and colloid, obtain degummed oil.
(6), the light alkaline process depickling of high temperature: start and stir, controlling degummed oil temperature in extractor is 50 ~ 55 DEG C, by concentration be slowly 8% alkali lye spill in degummed oil, rapid stirring 15 ~ 20min, oil temperature is risen to 70 ~ 75 DEG C, continue to be stirred to soap stock particle not large in change, stop adding alkali lye, stop stirring; Then insulation leaves standstill 10 ~ 12h, treats the whole sedimentation of soap stock, isolates lower floor's soap stock, obtain upper strata oil; Then weigh 40 ~ 50 DEG C of warm water washings twice of 10% with oil, be separated and take out moisture, obtain depickling oil.
(7), activated decoloration: depickling oil is placed in extractor, is under agitation heated to 50 ~ 65 DEG C, add the atlapulgite that oil weighs 1%, continue to be heated to 70 ~ 75 DEG C, then add 3% atlapulgite, stir 30 ~ 40min, insulation leaves standstill 5 ~ 6h, and filtered while hot, obtains bleached oil.
(8) wet distillation deodorization, bleached oil is poured in extractor, heating stirrer, under the vacuum condition of-0.1MPa, bleached oil is heated to 140 ~ 150 DEG C, open the steam valve of pot bottom in tank, adjustment quantity of steam, makes vacuum tightness in tank be not less than-0.06MPa, carry out stripping, continue to be warming up to 240 ~ 250 DEG C, make oil temperature keep, at such a temperature after deodorization 2 ~ 3h, closing open steam, stop heating, cooling, by below oil cooling to 80 DEG C, slowly opens exhaust-valve, until when vacuum tightness is 0, oil is released, filters, obtain processed oil.
The present invention's subcritical abstraction technology used is then under normal temperature and certain pressure (0.3Mpa ~ 0.7Mpa), use subcritical fluids counter-current extraction, then make the solvent under reduced pressure in mixing oil and the dregs of rice gasify, the solvent gas after gasification uses through compressor compresses condensation liquefaction Posterior circle again.Applicant is through experimental study repeatedly, and in determining step (1), injection solvent is R134a; Extraction temperature is at 40 ~ 45 DEG C, and pressure is 0.3 ~ 0.7Mpa, and immersion extraction time is 120 ~ 150min; Supersound process is carried out, process 1 ~ 7min, interval 2 ~ 10min while soaking extraction; In step (2), (3), respectively under the pressure of 40 ~ 60 DEG C and 0.3 ~ 0.7Mpa, carry out solvent recuperation, complete one-level, secondary is resolved; In step (4), extracting solution is separated, and centrifugal speed is 6700r/min, and centrifugation time is 10-20min; Then adopt that aquation method is come unstuck respectively, the light alkaline process depickling of high temperature, activated decoloration, wet distillation deodorization 4 steps to be to complete peony seeds crude oil delicate procedure.Not only molten consumption is low to utilize subcritical production peony seed oil, and production cost is low, and also without " three-waste pollution " in production, belong to environment-friendly engineering, and after extraction, gained dregs of rice quality is good, in the dregs of rice, water-soluble protein unchangeability is greater than 95%, and in the dregs of rice, Residual oil is less than 1%, is residually moltenly less than 50ppm.
The beneficial effect compared with prior art had:
1, the present invention uses subcritical fluid extraction technology to extract peony seed oil first, is at supercritical CO
2another new method after abstraction technique.
2, the extraction yield obtained through subcritical preparation method can reach 33.3 ~ 35.5%, and extraction yield is high compared to supercritical extraction by about 8%, considerably increases the output of peony seed oil.
3, the present invention greatly reduces facility investment compared with supercritical extraction technique, improves security, decreases the damage of High Temperature High Pressure to peony seed oil composition.
4, present invention achieves the large-scale industrial production of peony seed oil, not only molten consumption is low, and production cost is low, and gained dregs of rice quality is good, so takes full advantage of residue, also saves resource, has good application prospect.
The present invention is reasonable in design, subcritical abstraction technology is as a kind of efficient, low consumption, environmental protection, safely, have the extractive technique of broad prospect of application, and be widely used in the Extraction and separation of medicine intermediate, fat-soluble pigment, volatile spice essence, extract industry to be at home in a leading position level, represent the recent development direction of technology.
Embodiment
Below specific embodiments of the invention are described in detail.
embodiment 1
A production method for sub critical extraction peony seed oil, comprises the steps:
(1), peony seeds peeling, being crushed to granularity is 20 orders, loads in extractor, starts and stirs, make material in still be tending towards smooth; Open vacuum tightness in vacuum pump adjustment extractor, to-0.05Mpa, to inject subcritical fluids R134a as solvent, mix with raw material stirring until liquid level exceeds raw material; In control extractor, extraction temperature is at 45 DEG C, and pressure is 0.5Mpa, and immersion extraction time is 120min; Carry out supersound process while soaking extraction, process 4min at every turn, interval 6 minutes, after starting ultrasonic device, positive and negative each stirring 1/6 week every 10 minutes, iterative cycles like this; After having extracted, close ultrasonic, be separated solid, liquid phase, liquid-phase mixing liquid is delivered into temporary storage tank; Add solvent in solid phase waste residue and repeat above-mentioned immersion extraction, ultrasonic and separation solid, liquid phase step, re-extract 5 times, each time of soaking extraction is 30min.
(2), rely on pressure and solvent pump, the liquid-phase mixing liquid in temporary storage tank is through being pressed into one-level extraction-container from processing filters; Liquid-phase mixing liquid iterates through tubular heat exchanger, and under 60 DEG C of pressure with 0.7Mpa, the solvent evaporates in liquid-phase mixing liquid enters solvent recovering system, and liquid extracting solution stays in one-level extraction-container; When the Pressure Drop in one-level extraction-container is to 0.15Mpa, completes one-level and resolve.
(3) secondary extraction-container delivered to by the liquid extracting solution, through one-level parsing initial gross separation, carry out injection at kettle top through injector and diffuse to form tiny liquid pearl, under 40 DEG C of pressure with 0.5Mpa, the solvent residued in tiny liquid pearl is evaporated further in from top to bottom by the process of jacketed heat exchanger; When the Pressure Drop in secondary extraction-container is to 0Mpa, start vacuum pump, when being-0.02Mpa to vacuum tightness, completing secondary and resolve.
(4), by secondary extraction-container extracting solution be delivered in whizzer and carry out two times centrifugal, centrifugal speed is with 6700r/min, and centrifugation time is 15min, opens vacuum pump after centrifugal, is pressed into by supernatant liquor in hold-up vessel, obtains peony seeds crude oil.
(5), aquation method comes unstuck: start and stir, and controlling crude oil temperature in extractor is 45 DEG C, adds the sodium-chlor boiling water that oil weighs 4%, concentration is 20%, rapid stirring 20min, rises to 80 DEG C by oil temperature, rapid stirring 30min, insulation leaves standstill 6h, is separated removing lower layer of water and colloid, obtains degummed oil.
(6), the light alkaline process depickling of high temperature: start and stir, controlling degummed oil temperature in extractor is 50 DEG C, is slowly that the alkali lye of 8% spills in degummed oil by concentration, rapid stirring 15min, rises to 75 DEG C by oil temperature, continue to be stirred to soap stock particle not large in change, stop adding alkali lye, stop stirring; Then insulation leaves standstill 11h, treats the whole sedimentation of soap stock, isolates lower floor's soap stock, obtain upper strata oil; Then weigh 45 DEG C of warm water washings twice of 10% with oil, be separated and take out moisture, obtain depickling oil.
(7), activated decoloration: depickling oil is placed in extractor, is under agitation heated to 50 DEG C, add the atlapulgite that oil weighs 1%, continue to be heated to 75 DEG C, then add 3% atlapulgite, stir 35min, insulation leaves standstill 5h, and filtered while hot, obtains bleached oil.
(8) wet distillation deodorization, bleached oil is poured in extractor, heating stirrer, under the vacuum condition of-0.1MPa, bleached oil is heated to 145 DEG C, open the steam valve of pot bottom in tank, adjustment quantity of steam, makes vacuum tightness in tank be not less than-0.06MPa, carry out stripping, continue to be warming up to 240 DEG C, make oil temperature keep, at such a temperature after deodorization 2h, closing open steam, stop heating, cooling, by below oil cooling to 80 DEG C, slowly opens exhaust-valve, until when vacuum tightness is 0, oil is released, filters, obtain processed oil.
embodiment 2
A production method for sub critical extraction peony seed oil, comprises the steps:
(1), peony seeds peeling, being crushed to granularity is 20 orders, loads in extractor, starts and stirs, make material in still be tending towards smooth; Open vacuum tightness in vacuum pump adjustment extractor, to-0.02Mpa, to inject subcritical fluids R134a as solvent, mix with raw material stirring until liquid level exceeds raw material; In control extractor, extraction temperature is at 40 DEG C, and pressure is 0.7Mpa, and immersion extraction time is 135min; Carry out supersound process while soaking extraction, process 7min at every turn, interval 10 minutes, after starting ultrasonic device, positive and negative each stirring 1/6 week every 10 minutes, iterative cycles like this; After having extracted, close ultrasonic, be separated solid, liquid phase, liquid-phase mixing liquid is delivered into temporary storage tank; Add solvent in solid phase waste residue and repeat above-mentioned immersion extraction, ultrasonic and separation solid, liquid phase step, re-extract 3 times, each time of soaking extraction is 60min.
(2), rely on pressure and solvent pump, the liquid-phase mixing liquid in temporary storage tank is through being pressed into one-level extraction-container from processing filters; Liquid-phase mixing liquid iterates through tubular heat exchanger, and under 50 DEG C of pressure with 0.3Mpa, the solvent evaporates in liquid-phase mixing liquid enters solvent recovering system, and liquid extracting solution stays in one-level extraction-container; When the Pressure Drop in one-level extraction-container is to 0.2Mpa, completes one-level and resolve.
(3) secondary extraction-container delivered to by the liquid extracting solution, through one-level parsing initial gross separation, carry out injection at kettle top through injector and diffuse to form tiny liquid pearl, under 60 DEG C of pressure with 0.7Mpa, the solvent residued in tiny liquid pearl is evaporated further in from top to bottom by the process of jacketed heat exchanger; When the Pressure Drop in secondary extraction-container is to 0Mpa, start vacuum pump, when being-0.08Mpa to vacuum tightness, completing secondary and resolve.
(4), by secondary extraction-container extracting solution be delivered in whizzer and carry out two times centrifugal, centrifugal speed is with 6700r/min, and centrifugation time is 10min, opens vacuum pump after centrifugal, is pressed into by supernatant liquor in hold-up vessel, obtains peony seeds crude oil.
(5), aquation method comes unstuck: start and stir, and controlling crude oil temperature in extractor is 47 DEG C, adds the sodium-chlor boiling water that oil weighs 4%, concentration is 20%, rapid stirring 18min, rises to 75 DEG C by oil temperature, rapid stirring 30min, insulation leaves standstill 6.5h, is separated removing lower layer of water and colloid, obtains degummed oil.
(6), the light alkaline process depickling of high temperature: start and stir, controlling degummed oil temperature in extractor is 50 DEG C, is slowly that the alkali lye of 8% spills in degummed oil by concentration, rapid stirring 18min, rises to 73 DEG C by oil temperature, continue to be stirred to soap stock particle not large in change, stop adding alkali lye, stop stirring; Then insulation leaves standstill 12h, treats the whole sedimentation of soap stock, isolates lower floor's soap stock, obtain upper strata oil; Then weigh 50 DEG C of warm water washings twice of 10% with oil, be separated and take out moisture, obtain depickling oil.
(7), activated decoloration: depickling oil is placed in extractor, is under agitation heated to 60 DEG C, add the atlapulgite that oil weighs 1%, continue to be heated to 70 DEG C, then add 3% atlapulgite, stir 40min, insulation leaves standstill 5h, and filtered while hot, obtains bleached oil.
(8) wet distillation deodorization, bleached oil is poured in extractor, heating stirrer, under the vacuum condition of-0.1MPa, bleached oil is heated to 140 DEG C, open the steam valve of pot bottom in tank, adjustment quantity of steam, makes vacuum tightness in tank be not less than-0.06MPa, carry out stripping, continue to be warming up to 245 DEG C, make oil temperature keep, at such a temperature after deodorization 2.5h, closing open steam, stop heating, cooling, by below oil cooling to 80 DEG C, slowly opens exhaust-valve, until when vacuum tightness is 0, oil is released, filters, obtain processed oil.
embodiment 3
A production method for sub critical extraction peony seed oil, comprises the steps:
(1), peony seeds peeling, being crushed to granularity is 20 orders, loads in extractor, starts and stirs, make material in still be tending towards smooth; Open vacuum tightness in vacuum pump adjustment extractor, to-0.08Mpa, to inject subcritical fluids R134a as solvent, mix with raw material stirring until liquid level exceeds raw material; In control extractor, extraction temperature is at 43 DEG C, and pressure is 0.3Mpa, and immersion extraction time is 150min; Carry out supersound process while soaking extraction, process 1min at every turn, interval 2 minutes, after starting ultrasonic device, positive and negative each stirring 1/6 week every 10 minutes, iterative cycles like this; After having extracted, close ultrasonic, be separated solid, liquid phase, liquid-phase mixing liquid is delivered into temporary storage tank; Add solvent in solid phase waste residue and repeat above-mentioned immersion extraction, ultrasonic and separation solid, liquid phase step, re-extract 6 times, each time of soaking extraction is 45min.
(2), rely on pressure and solvent pump, the liquid-phase mixing liquid in temporary storage tank is through being pressed into one-level extraction-container from processing filters; Liquid-phase mixing liquid iterates through tubular heat exchanger, and under 40 DEG C of pressure with 0.4Mpa, the solvent evaporates in liquid-phase mixing liquid enters solvent recovering system, and liquid extracting solution stays in one-level extraction-container; When the Pressure Drop in one-level extraction-container is to 0.1Mpa, completes one-level and resolve.
(3) secondary extraction-container delivered to by the liquid extracting solution, through one-level parsing initial gross separation, carry out injection at kettle top through injector and diffuse to form tiny liquid pearl, under 50 DEG C of pressure with 0.3Mpa, the solvent residued in tiny liquid pearl is evaporated further in from top to bottom by the process of jacketed heat exchanger; When the Pressure Drop in secondary extraction-container is to 0Mpa, start vacuum pump, when being-0.05Mpa to vacuum tightness, completing secondary and resolve.
(4), by secondary extraction-container extracting solution be delivered in whizzer and carry out two times centrifugal, centrifugal speed is with 6700r/min, and centrifugation time is 20min, opens vacuum pump after centrifugal, is pressed into by supernatant liquor in hold-up vessel, obtains peony seeds crude oil.
(5), aquation method comes unstuck: start and stir, and controlling crude oil temperature in extractor is 50 DEG C, adds the sodium-chlor boiling water that oil weighs 4%, concentration is 20%, rapid stirring 15min, rises to 75 DEG C by oil temperature, rapid stirring 35min, insulation leaves standstill 7h, is separated removing lower layer of water and colloid, obtains degummed oil.
(6), the light alkaline process depickling of high temperature: start and stir, controlling degummed oil temperature in extractor is 55 DEG C, is slowly that the alkali lye of 8% spills in degummed oil by concentration, rapid stirring 20min, rises to 70 DEG C by oil temperature, continue to be stirred to soap stock particle not large in change, stop adding alkali lye, stop stirring; Then insulation leaves standstill 10h, treats the whole sedimentation of soap stock, isolates lower floor's soap stock, obtain upper strata oil; Then weigh 40 DEG C of warm water washings twice of 10% with oil, be separated and take out moisture, obtain depickling oil.
(7), activated decoloration: depickling oil is placed in extractor, is under agitation heated to 65 DEG C, add the atlapulgite that oil weighs 1%, continue to be heated to 70 DEG C, then add 3% atlapulgite, stir 30min, insulation leaves standstill 6h, and filtered while hot, obtains bleached oil.
(8) wet distillation deodorization, bleached oil is poured in extractor, heating stirrer, under the vacuum condition of-0.1MPa, bleached oil is heated to 150 DEG C, open the steam valve of pot bottom in tank, adjustment quantity of steam, makes vacuum tightness in tank be not less than-0.06MPa, carry out stripping, continue to be warming up to 250 DEG C, make oil temperature keep, at such a temperature after deodorization 3h, closing open steam, stop heating, cooling, by below oil cooling to 80 DEG C, slowly opens exhaust-valve, until when vacuum tightness is 0, oil is released, filters, obtain processed oil.
The scope of protection of present invention is not limited to above embodiment; to those skilled in the art; the present invention can have various deformation and change, all in design of the present invention and any amendment, the improvement done within principle be equal to replacement and all should be included within protection scope of the present invention.
Claims (1)
1. a production method for sub critical extraction peony seed oil, is characterized in that: comprise the steps:
(1), peony seeds peeling, load in extractor after pulverizing, start and stir, make material in still be tending towards smooth; Open vacuum tightness in vacuum pump adjustment extractor, to-0.02 ~-0.08Mpa, to inject subcritical fluids R134a as solvent, mix with raw material stirring until liquid level exceeds raw material; In control extractor, extraction temperature is at 40 ~ 45 DEG C, and pressure is 0.3 ~ 0.7Mpa, and immersion extraction time is 120 ~ 150min; Carry out supersound process while soaking extraction, process 1 ~ 7min at every turn, interval 2 ~ 10 minutes, after starting ultrasonic device, positive and negative each stirring 1/6 week every 10 minutes, iterative cycles like this; After having extracted, close ultrasonic, be separated solid, liquid phase, liquid-phase mixing liquid is delivered into temporary storage tank; Add solvent in solid phase waste residue and repeat above-mentioned immersion extraction, ultrasonic and separation solid, liquid phase step, re-extract 3 ~ 6 times, each time of soaking extraction is 30 ~ 60min;
(2), rely on pressure and solvent pump, the liquid-phase mixing liquid in temporary storage tank is through being pressed into one-level extraction-container from processing filters; Liquid-phase mixing liquid iterates through tubular heat exchanger, and under the pressure of 40 ~ 60 DEG C and 0.3 ~ 0.7Mpa, the solvent evaporates in liquid-phase mixing liquid enters solvent recovering system, and liquid extracting solution stays in one-level extraction-container; As the Pressure Drop to 0.1 in one-level extraction-container ~ 0.2Mpa, complete one-level and resolve;
(3) secondary extraction-container delivered to by the liquid extracting solution, through one-level parsing initial gross separation, carry out injection at kettle top through injector and diffuse to form tiny liquid pearl, under the pressure of 40 ~ 60 DEG C and 0.3 ~ 0.7Mpa, the solvent residued in tiny liquid pearl is evaporated further in from top to bottom by the process of jacketed heat exchanger; When the Pressure Drop in secondary extraction-container is to 0Mpa, start vacuum pump, when being-0.02 ~-0.08Mpa to vacuum tightness, completing secondary and resolve;
(4), by secondary extraction-container extracting solution be delivered in whizzer and carry out two times centrifugal, centrifugal speed is with 6700r/min, and centrifugation time is 10 ~ 20min, opens vacuum pump after centrifugal, is pressed into by supernatant liquor in hold-up vessel, obtains peony seeds crude oil;
(5), aquation method is come unstuck: start and stir, controlling crude oil temperature in extractor is 45 ~ 50 DEG C, add the sodium-chlor boiling water that oil weighs 4%, concentration is 20%, rapid stirring 15 ~ 20min, oil temperature is risen to 75 ~ 80 DEG C, rapid stirring 30 ~ 35min, insulation leaves standstill 6 ~ 7h, be separated removing lower layer of water and colloid, obtain degummed oil;
(6), the light alkaline process depickling of high temperature: start and stir, controlling degummed oil temperature in extractor is 50 ~ 55 DEG C, by concentration be slowly 8% alkali lye spill in degummed oil, rapid stirring 15 ~ 20min, oil temperature is risen to 70 ~ 75 DEG C, continue to be stirred to soap stock particle not large in change, stop adding alkali lye, stop stirring; Then insulation leaves standstill 10 ~ 12h, treats the whole sedimentation of soap stock, isolates lower floor's soap stock, obtain upper strata oil; Then weigh 40 ~ 50 DEG C of warm water washings twice of 10% with oil, be separated and take out moisture, obtain depickling oil;
(7), activated decoloration: depickling oil is placed in extractor, is under agitation heated to 50 ~ 65 DEG C, add the atlapulgite that oil weighs 1%, continue to be heated to 70 ~ 75 DEG C, then add 3% atlapulgite, stir 30 ~ 40min, insulation leaves standstill 5 ~ 6h, and filtered while hot, obtains bleached oil;
(8) wet distillation deodorization, bleached oil is poured in extractor, heating stirrer, under the vacuum condition of-0.1MPa, bleached oil is heated to 140 ~ 150 DEG C, open the steam valve of pot bottom in tank, adjustment quantity of steam, makes vacuum tightness in tank be not less than-0.06MPa, carry out stripping, continue to be warming up to 240 ~ 250 DEG C, make oil temperature keep, at such a temperature after deodorization 2 ~ 3h, closing open steam, stop heating, cooling, by below oil cooling to 80 DEG C, slowly opens exhaust-valve, until when vacuum tightness is 0, oil is released, filters, obtain processed oil.
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