CN103923741A - Process and equipment for removing gossypol from cottonseeds by dry method - Google Patents
Process and equipment for removing gossypol from cottonseeds by dry method Download PDFInfo
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- CN103923741A CN103923741A CN201410147201.4A CN201410147201A CN103923741A CN 103923741 A CN103923741 A CN 103923741A CN 201410147201 A CN201410147201 A CN 201410147201A CN 103923741 A CN103923741 A CN 103923741A
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- cottonseed
- dephenolize
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- benevolence
- dephenolizing
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Abstract
The invention discloses a process and equipment for removing gossypol from cottonseeds by a dry method. The process is characterized in that the cottonseeds are subjected to winnowing, husking and kernel-husk separation to obtain cottonseed kernels with husk content below 15%; the cottonseed kernels are rolled into flakes with thickness of 0.3-0.4mm; qualified materials to be pressed are obtained through tempering at 70-80 DEG C; low temperature pressing is adopted, the barrel pressure is controlled, the material temperature is controlled to be below 80 DEG C, and the residual cake oil is controlled below 13-17%; cottonseed oil is leached and extracted from machine pressed cakes by adopting a 6# solvent, solvent-containing wet meal is conveyed to an evapo-separated machine, a dephenolizing liquid inlet is formed in the top of the evapo-separated machine, and the leached meal is desolventized and dephenolized in the evapo-separated machine. The process and the equipment have the beneficial effects that the cottonseeds are treated at low temperature, so that the cottonseed proteins are not denatured, and the original nutrition characteristics are maintained; the soaked materials are well formed and have good permeability when leached; the content of gossypol in the meal after dephenolization is low and is less than 400mg/kg, which is specified in the recommended standard of the World Health Organization.
Description
Technical field
The invention belongs to oil plant comprehensive utilization technique field, relate in particular to the Processes and apparatus that the dephenolization cottonseed dregs of rice are produced in a kind of dry method dephenolize.
Background technology
China Shi Chanmian big country, cottonseed is important oil resource, in cottonseed, protein content is only second to soybean and occupies second in various vegetable oil materials.Cottonseed protein has that amino acid balance is good, protein nutritive value more than grain protein the feature such as high and good palatability, be a kind of high-quality food protein.At present, cottonseed is except for extracting Oleum Gossypii semen, to the exploitation of cottonseed protein seldom.Carrying cotton cake dregs protein content after oil can be up to 60%, but due to the existence of gossypol, and cotton cake dregs for field also, on a small quantity as animal-feed, has been caused the significant wastage of resource by a large number.
Gossypol is a kind of xanthein, concentrates on especially in the look body of gland of cotton benevolence, and in liquefaction process, gossypol is present in crude oil and grouts.The gossypol with activity hydroxy and aldehyde radical is called free gossypol, and free gossypol is poisonous to animal.Free gossypol can oxidized generation sex change gossypol, or same protein, phosphatide, carbohydrate are in conjunction with generating bound gossoypol; Particularly, in heat-treatment process, the carbonyl in gossypol molecule and the amino in protein molecule are combined into as bound gossoypol, protein denaturation under high temperature, and loss of activity is serious, and amino acid is destroyed, causes amino acid whose balance poor, and digestibility is low.
Summary of the invention
The object of this invention is to provide a kind of dry method dephenolize and produce dephenolization cottonseed dregs of rice Processes and apparatus.
For achieving the above object, the technical solution used in the present invention is:
A cottonseed dry method dephenolizing process, comprises pre-treatment, leaching and precipitation dephenolize workshop section, and concrete technology step is:
(1) selection by winnowing, cottonseed water content after selection by winnowing is 7%～16%, and down content is 2%～6%, and impurity content is lower than 0.5%;
(2) peel off, cottonseed, after the separation of hull from kernel of peeling off, contains shell amount lower than 6%～15% in benevolence; Separation of hull from kernel adopts angle sieve, screening trommel and pneumatic jig repeatedly to screen;
(3) roll embryo, Cotton Seed is rolled to embryo, rolling embryo sheet thickness after embryo is 0.3～0.4mm;
(4) modified, embryo sheet is carried out to modified, modified temperature at 60～80 ℃, after modulation, material moisture is lower than 7%;
(5) squeezing, squeezes and obtains cottonseed cake the embryo sheet after modified;
(6) leach, the cottonseed cake after squeezing enters leacher, leaches and adopts 6# extraction grease, and 50～55 ℃ of service temperatures, expect molten ratio 1: 1.1～1.8, and extraction time 100～180 minutes obtains lixiviate crude oil and contains wet cake;
(7) precipitation dephenolize, enters precipitation dephenolize tower containing wet cake, and tower top sprays into dephenolizing solution, and dephenolizing solution addition is 2 ‰, in micro-subnormal ambient, processes 30 minutes for 80 ℃, and after dephenolize, in the dregs of rice, gossypol content is less than 400mg/kg.
In described step (5), squeezing adopts low temperature pressing, and temperature is lower than 80 ℃, and cottonseed cake Residual oil is lower than 13～17%, cotton oil fuel-displaced 18%～19%.
Cottonseed dry method dephenolizing process equipment, comprise drawing-in device, drawing-in device is connected with air float separator, air float separator is connected with the decorticator of its below, the discharge end of decorticator is connected with screening plant, the discharge end of screening plant is connected with flaker feed end, the discharge end of flaker is connected with drying machine, drying machine is connected with the feed end of squeezing machine, the discharge end of squeezing machine is connected with leacher, the wet dregs of rice outlet of leacher is connected with precipitation dephenolize tower, and precipitation dephenolize tower top is provided with the dephenolizing solution being communicated with it and fills with.
Described pneumatic separation device comprises angle sieve, screening trommel and the pneumatic jig connecting successively.
Drawing-in device is connected with air float separator by bucket elevator, and material automatically falls into decorticator after selection by winnowing; Cotton seed hulls, the Cotton Seed compound obtaining of peeling off is delivered to angle sieve through bucket elevator, and the outlet of angle sieve benevolence is connected with benevolence conveying auger, and the outlet of angle sieve shell is connected with screening trommel; The outlet of screening trommel benevolence is connected with benevolence conveying auger, and shell is delivered to shell storehouse, and the outlet of benevolence conveying auger is connected with bucket elevator, and benevolence is delivered to pneumatic jig; The benevolence outlet of pneumatic jig lower end is connected with flaker; Flaker is connected with drying machine by bucket elevator; Drying machine is connected with squeezing machine; Squeeze cake and by bucket elevator, be delivered to leacher through cake conveying auger, squeezing crude oil goes to refining plant; The wet dregs of rice outlet of leacher is connected with precipitation dephenolize tower by scraper conveyor, leaches crude oil devaporation workshop section; The outlet of precipitation dephenolize tower is connected to finished product dregs of rice storehouse by scraper conveyor; Dephenolizing solution pot bottom is connected with precipitation dephenolize top of tower, dephenolizing solution thus mouth enters precipitation dephenolize tower, dephenolize flow container side is connected with precipitation dephenolize top of tower by liquid seal device, and when guaranteeing that dephenolizing solution enters precipitation dephenolize tower smoothly, the resistance to air loss of device is guaranteed.Dephenolizing solution adopts vitriol, and under wet heat condition, gossypol is destroyed or combined, and chelating generates complex compound, thereby makes the activity hydroxy inactivation of gossypol, by animal, is not absorbed, thereby reduces the toxicity of gossypol to animal.
Production technique of the present invention guarantees that cottonseed carries out pre-treatment at low temperatures, cottonseed protein unchangeability, the nutritive value of assurance cottonseed protein; Through low temperature pressing free gossypol, be more present in squeezing crude oil, avoid, under hot conditions, Maillard reaction occurs and form bound gossoypol and be present in cottonseed meal.Leach in the wet dregs of rice and add dephenolizing solution, under wet heat condition, gossypol is destroyed or combined, and chelating generates complex compound, thereby makes the activity hydroxy inactivation of gossypol, by animal, is not absorbed, thereby reduces the toxicity of gossypol to animal.Low temperature pre-treatment-leaching-precipitation dephenolizing process oil yield of the present invention is high, dephenolize thorough, nutrient protein value is high, technique simple, be produced into this locality, versatility is good, also can be used for Soybean production low temperature soy meal; Cottonseed dry method dephenolizing process equipment in the present invention, equipment install to connect compact, simple in structure, cost is low, coordinates dephenolizing process to use, can reach that oil yield is high, dephenolize thoroughly, nutrient protein is worth high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
As shown in Figure 1, a kind of cottonseed dry method dephenolizing process, this technique comprises the following steps: (1), cottonseed enter air float separator 3 through drawing-in device 1 by bucket elevator 2, carry out selection by winnowing, cottonseed water content after selection by winnowing is 6%～12%, and down content is 2%～5%, and impurity content is lower than 0.2%; (2), through the cottonseed of selection by winnowing, from air float separator 3, fall into decorticator 4, after decorticator 4, obtain shell benevolence compound; Shell benevolence compound is delivered to angle sieve 5, screening trommel 6, pneumatic jig 8 through bucket elevator 2 and carries out separation of hull from kernel, shell from angle sieve 5 enters screening trommel 6, benevolence is collected through benevolence conveying auger 7, shell from screening trommel 6 is delivered to shell storehouse, benevolence enters benevolence conveying auger 7 and collects and enter pneumatic jig 8 through bucket elevator 2, contains shell amount lower than 6%～15% after separation in benevolence; (3), from the Cotton Seed of pneumatic jig 8, fall into flaker 9, rolling embryo sheet thickness after embryo is 0.3 ~ 0.4mm; (4), that embryo sheet enters horizontal drier 10 through bucket elevator 2 is modified, modified temperature is 60 ~ 80 ℃, after modulation, material moisture is lower than 7%; (5) the embryo sheet, after modified falls into squeezing machine 11, squeezes and obtains cottonseed cake, and squeezing adopts low temperature pressing, and temperature is lower than 80 ℃, and cottonseed cake Residual oil is lower than 13～17%, cotton oil fuel-displaced 18%～19%; (6), cottonseed cake enters leacher 13 through cake conveying auger 12, bucket elevator 2, leach and adopt 6# extraction grease, 50～55 ℃ of service temperatures, expect molten ratio 1: 1.1～1.8, extraction time 100～180 minutes, obtain leaching crude oil and contain wet cake, leach crude oil devaporation workshop section (7), containing wet cake, through bucket elevator 2, enter precipitation dephenolize tower 12, tower top sprays into dephenolizing solution, dephenolizing solution addition is 2 ‰, in micro-subnormal ambient, process 30 minutes for 80 ℃, after dephenolize, in the dregs of rice, gossypol content is less than 400mg/kg; The precipitation dephenolize dregs of rice are delivered to dregs of rice storehouse by scraper conveyor 15; Dephenolizing solution in dephenolize flow container 16 enters precipitation dephenolize tower 14.
Described above-mentioned cottonseed dry method dephenolizing process equipment, comprise drawing-in device 1, drawing-in device 1 is connected with air float separator 3 by bucket elevator 2, cottonseed enters air float separator 3 and carries out the cottonseed that selection by winnowing obtains meeting the requirements, described bucket elevator 2 is connected with air float separator 3 material inlet 3-1, air float separator 3 material outlet 3-2 are connected with the decorticator 4 of its below, in decorticator 4, carry out separation of hull from kernel, the discharge end of decorticator 4 is connected with screening plant, carry out the screening of Cotton Seed and cotton seed hulls, screening plant comprises the angle sieve 5 connecting successively, screening trommel 6 and pneumatic jig 8, wherein the benevolence of angle sieve 5 outlet 5-2 is connected with benevolence conveying auger import 7-1, the shell outlet 5-3 of angle sieve 5 is connected with screening trommel 6 imports, screening trommel 6 benevolence outlets are connected with benevolence conveying auger 7, shell is delivered to shell storehouse, Cotton Seed is collected through benevolence conveying auger 7, carry, 7 outlets of benevolence conveying auger are connected with bucket elevator 2, bucket elevator 2 connects pneumatic jig 8, thereby benevolence is delivered to pneumatic jig, pneumatic jig 8 lower end benevolence outlets are connected with the feed end of flaker 9, the discharge end of flaker 9 is connected with drying machine 10 by bucket elevator 2, drying machine 10 is connected with the feed end 11-1 of squeezing machine 11, the discharge end of squeezing machine 11 is connected with leacher 13 by cake conveying auger 12 and bucket elevator 2, squeeze cake and by bucket elevator 2, be delivered to leacher 13 through cake conveying auger 12, squeezing crude oil goes to refining plant, the wet dregs of rice outlet 13-1 of leacher 13 is connected with precipitation dephenolize tower 14 by bucket elevator, leach crude oil devaporation workshop section, precipitation dephenolize tower 14 tops are provided with the dephenolize flow container 16 being communicated with it, dephenolize flow container 16 bottoms are connected with precipitation dephenolize tower 14 tops, the precipitation dephenolize dregs of rice outlet 14-3 of precipitation dephenolize tower 14 is connected to finished product dregs of rice storehouse by scraper conveyor 15.
Claims (5)
1. a cottonseed dry method dephenolizing process, comprises pre-treatment, leaching and precipitation dephenolize workshop section, it is characterized in that, concrete technology step is:
(1) selection by winnowing, cottonseed water content after selection by winnowing is 7%～16%, and down content is 2%～6%, and impurity content is lower than 0.5%;
(2) peel off, cottonseed, after the separation of hull from kernel of peeling off, contains shell amount lower than 6%～15% in benevolence; Separation of hull from kernel adopts angle sieve, screening trommel and pneumatic jig repeatedly to screen;
(3) roll embryo, Cotton Seed is rolled to embryo, rolling embryo sheet thickness after embryo is 0.3～0.4mm;
(4) modified, embryo sheet is carried out to modified, modified temperature at 60～80 ℃, after modulation, material moisture is lower than 7%;
(5) squeezing, squeezes and obtains cottonseed cake the embryo sheet after modified;
(6) leach, the cottonseed cake after squeezing enters leacher, leaches and adopts 6# extraction grease, and 50～55 ℃ of service temperatures, expect molten ratio 1: 1.1～1.8, and extraction time 100～180 minutes obtains lixiviate crude oil and contains wet cake;
(7) precipitation dephenolize, enters precipitation dephenolize tower containing wet cake, and tower top sprays into dephenolizing solution, and dephenolizing solution addition is 2 ‰, in micro-subnormal ambient, processes 30 minutes for 80 ℃, and after dephenolize, in the dregs of rice, gossypol content is less than 400mg/kg.
2. cottonseed dry method dephenolizing process as claimed in claim 1, is characterized in that, in described step (5), squeezing adopts low temperature pressing, and temperature is lower than 80 ℃, and cottonseed cake Residual oil is lower than 13～17%, cotton oil fuel-displaced 18%～19%.
3. cottonseed dry method dephenolizing process equipment claimed in claim 1, it is characterized in that, comprise drawing-in device, drawing-in device is connected with air float separator, air float separator is connected with the decorticator of its below, the discharge end of decorticator is connected with screening plant, the discharge end of screening plant is connected with flaker feed end, the discharge end of flaker is connected with drying machine, drying machine is connected with the feed end of squeezing machine, the discharge end of squeezing machine is connected with leacher, and the wet dregs of rice outlet of leacher is connected with precipitation dephenolize tower, and precipitation dephenolize tower top is provided with the dephenolizing solution being communicated with it and fills with.
4. cottonseed dry method dephenolizing process equipment as claimed in claim 3, is characterized in that, described pneumatic separation device comprises angle sieve, screening trommel and the pneumatic jig connecting successively.
5. cottonseed dry method dephenolizing process equipment as claimed in claim 4, is characterized in that, drawing-in device is connected with air float separator by bucket elevator, and material automatically falls into decorticator after selection by winnowing; Cotton seed hulls, the Cotton Seed compound obtaining of peeling off is delivered to angle sieve through bucket elevator, and the outlet of angle sieve benevolence is connected with benevolence conveying auger, and the outlet of angle sieve shell is connected with screening trommel; The outlet of screening trommel benevolence is connected with benevolence conveying auger, and shell is delivered to shell storehouse, and the outlet of benevolence conveying auger is connected with bucket elevator, and benevolence is delivered to pneumatic jig; The benevolence outlet of pneumatic jig lower end is connected with flaker; Flaker is connected with drying machine by bucket elevator; Drying machine is connected with squeezing machine; Squeeze cake and by bucket elevator, be delivered to leacher through cake conveying auger, squeezing crude oil goes to refining plant; The wet dregs of rice outlet of leacher is connected with precipitation dephenolize tower by scraper conveyor, leaches crude oil devaporation workshop section; The outlet of precipitation dephenolize tower is connected to finished product dregs of rice storehouse by scraper conveyor; Dephenolizing solution pot bottom is connected with precipitation dephenolize top of tower, and dephenolize flow container side is connected with precipitation dephenolize top of tower by liquid seal device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410147201.4A CN103923741A (en) | 2014-03-07 | 2014-04-14 | Process and equipment for removing gossypol from cottonseeds by dry method |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410082339.0 | 2014-03-07 | ||
| CN201410082339 | 2014-03-07 | ||
| CN201410147201.4A CN103923741A (en) | 2014-03-07 | 2014-04-14 | Process and equipment for removing gossypol from cottonseeds by dry method |
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| Publication Number | Publication Date |
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| CN103923741A true CN103923741A (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410147201.4A Pending CN103923741A (en) | 2014-03-07 | 2014-04-14 | Process and equipment for removing gossypol from cottonseeds by dry method |
| CN201420178096.6U Expired - Lifetime CN203807427U (en) | 2014-03-07 | 2014-04-14 | Cottonseed dry-method dephenolization equipment |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420178096.6U Expired - Lifetime CN203807427U (en) | 2014-03-07 | 2014-04-14 | Cottonseed dry-method dephenolization equipment |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103923741A (en) * | 2014-03-07 | 2014-07-16 | 郑州远洋油脂工程技术有限公司 | Process and equipment for removing gossypol from cottonseeds by dry method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099066A (en) * | 1994-06-03 | 1995-02-22 | 清华紫光(集团)总公司 | Art for treatment of cotton seed kernel |
| CN1631209A (en) * | 2005-01-19 | 2005-06-29 | 北京华康希望生物科技有限公司 | Cotton seed dephenolizing protein complete equipment |
| CN101664099A (en) * | 2008-09-01 | 2010-03-10 | 北京中棉紫光生物科技有限公司 | Method for producing cottonseed germ materials used in low-temperature pretreatment production of gossypol-removed cottonseed protein |
| CN203807427U (en) * | 2014-03-07 | 2014-09-03 | 郑州远洋油脂工程技术有限公司 | Cottonseed dry-method dephenolization equipment |
-
2014
- 2014-04-14 CN CN201410147201.4A patent/CN103923741A/en active Pending
- 2014-04-14 CN CN201420178096.6U patent/CN203807427U/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1099066A (en) * | 1994-06-03 | 1995-02-22 | 清华紫光(集团)总公司 | Art for treatment of cotton seed kernel |
| CN1631209A (en) * | 2005-01-19 | 2005-06-29 | 北京华康希望生物科技有限公司 | Cotton seed dephenolizing protein complete equipment |
| CN101664099A (en) * | 2008-09-01 | 2010-03-10 | 北京中棉紫光生物科技有限公司 | Method for producing cottonseed germ materials used in low-temperature pretreatment production of gossypol-removed cottonseed protein |
| CN203807427U (en) * | 2014-03-07 | 2014-09-03 | 郑州远洋油脂工程技术有限公司 | Cottonseed dry-method dephenolization equipment |
Non-Patent Citations (4)
| Title |
|---|
| 杨锐: "《棉籽加工预处理新工艺》", 《农村新技术》 * |
| 祝强等: "《一种新的棉籽脱酚生产工艺》", 《中国油脂》 * |
| 肇立春: "《浅谈低变性棉籽粕的制备》", 《中国油脂》 * |
| 闫子鹏等: "《粮油加工产开办指南》", 30 April 2010, 化学工业出版社 * |
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| CN203807427U (en) | 2014-09-03 |
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Application publication date: 20140716 |