CN1392231A - Method and equipment for extracting pyrethrin oil from dry pyrethrum flower - Google Patents
Method and equipment for extracting pyrethrin oil from dry pyrethrum flower Download PDFInfo
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- CN1392231A CN1392231A CN 01108545 CN01108545A CN1392231A CN 1392231 A CN1392231 A CN 1392231A CN 01108545 CN01108545 CN 01108545 CN 01108545 A CN01108545 A CN 01108545A CN 1392231 A CN1392231 A CN 1392231A
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Abstract
The process of extracting pyrethrin oil from dry pyrethrum flower includes crushing pyrethrum flower, loading the flower material lattices inside cylinder container, rotating the material lattices, spraying solvent normal hexane, petroleum ether, No.6 solvent oil or kerosene in 2-6 times the material volume of the material, leading out the extracting liquid, heating extracting liquid indirectly with 70-90 deg.c hot water, recovering solvent first at normal pressure and then at negative pressure to obtain pyrethrin oil product, and recovering solvent from the wet residue inside one drying tank and through direct steam heating and condensation. The process has the advantages of great processing amount and low power, water and solvent consumption.
Description
The present invention relates to from dry pyrethrum flower, extract the method and apparatus of pyrethrin oil.
Natural pyrethrin is a kind of high-efficiency broad spectrum, to the outstanding plant insecticide of human body and Mammals totally nontoxic, be from the exsiccant pyrethrum flowers, to obtain with extractions such as normal hexane, sherwood oil, kerosene, industrial napthas.
At present multi-function extractor extracting and supercritical carbon dioxide extraction apparatus of adopting extract more.With the extractive method of multi-function extractor is that dried flower is packed in the extractor, adds refluxing extraction behind the solvent, extracting solution purify concentrate and product.The shortcoming of this method is that the solvent loss amount is huge, and the ordinary wear and tear amount is more than 15%, and working ability is limited, the 4 tons of dried flowers of multipotency processing of 10 cubic metres large-scale extractor 8 hours.This is too high to have caused machined surface like this.Though supercritical carbon dioxide extraction apparatus processing dry pyrethrum flower has plurality of advantages, as efficient height, good product quality, do not produce industrial pollution etc., three big shortcomings are arranged also; The one, disposable input is excessive, as build its comprehensive method of investments of production line of 4000L * 2 will be above 5,000 ten thousand yuans; The 2nd, high energy consumption, high maintenance costs, heavy equipment amortization pressure cause this device working cost high.As the device processing pyrethrum flowers with 4000L * 2 is example, and the processing charges of per kilogram dried flower so forms great cost to product between ten thousand yuan of Renminbi 2-4.The 3rd, limited in one's ability, as calculating through the device of 4000L * 2,8 hours uninterrupted productions, multipotency processing 3-4 ton dried flower.
By above analysis as can be known, the product price that the method that present two kinds of passing through are produced pyrethrum ester oil is produced is all expensive, has seriously limited this outstanding sterilant and has used field, incompatibility China's national situation especially.
It is big to the purpose of this invention is to provide a kind of amount of finish, and the water power solvent-oil ratio is few, and disposable input is little, the method and apparatus that extracts pyrethrin oil from dry pyrethrum flower that production cost is low.
The present invention is achieved in that after the exsiccant pyrethrum flowers is pulverized, after the pulverizing of exsiccant pyrethrum flowers, in the material lattice in its large cylindrical appearance device of packing into, the material lattice are made horizontal circumferential motion under driven by motor, with pump solvent normal hexane or sherwood oil or No. 6 solvent oils or kerosene are sprayed on the material simultaneously, solvent load be material 2-6 doubly.The material bed back of solvent diacolation is oozed out from material lattice spacer screen, the extraction liquid that oozes out is derived, hot water indirect heating with 70-90 ℃, elder generation's normal pressure reclaims solvent, and then negative pressure reclaims solvent, acquisition pyrethrin oil production, the wet slag that contains solvent 45-55% after the extraction is packed in the drying chamber, spray into the water vapor direct heating, solvent enters condenser after being heated volatilization, carries out oily water separation after the condensation and reclaims solvent.
Solvent is circulated sprinkling in container, and its circulated sprinkling number of times is 2-10 time.
Extraction temperature is 10-70 ℃ in the extraction process.
Used extraction plant is a bulge, and the form material container is arranged in the container, and there is the support plate washer of material container spacer screen its lower end, and material container is by the chain rack gear of external container, and the chain tooth bar is by driven by motor.
There are feed(raw material)inlet and colvent inlet in above-described container top, wet slag outlet that container has below and extraction liquid outlet.
Advantages such as it is big that method and apparatus of the present invention has processing dried flower amount, and water power, solvent-oil ratio are few, and disposable input is little.As being example with 30 tons of dried flowers of a working days (8 hours) processing, the comprehensive process cost of per kilogram dried flower only is 0.3 yuan, and the device comprehensive method of investment of this kind working ability is no more than 5,000,000 yuans, shortcomings such as production cost height, working ability deficiency, the one-time investment of prior art be excessive have been overcome, thereby reducing the production cost of pyrethrum ester oil significantly, is the large-scale mode of production of a kind of effective low cost.
Fig. 1 is the structural representation of present device;
Fig. 2 is the schematic top plan view of the material container of present device;
Fig. 3 be the material lattice of present device change 1 week through the synoptic diagram of different price section.
Among the figure, 1-cylindrical tank, 2-feed(raw material)inlet, the 3-colvent inlet, the outlet of 4-wet slag, the outlet of 5-extraction liquid, the 6-material container, 7-supports plate washer, 8-chain, the 9-chain pitch wheel, the 10-motor, 11-material lattice, 13-fresh solvent entrance location, the 14-first spray position, the 15-second spray position, 16-the 3rd spray position, 17-the 4th spray position, 18-the 5th spray position, 19-first solvent cycle is drawn mouth, and the 20-second solvent cycle pump draws mouth, and 21-the 3rd solvent cycle pump draws mouth, 22-the 4th solvent cycle pump draws mouth, 23-the 5th recycle pump draws mouth, the 24-material section of draining, and the blanking section is opened in 25-material lattice bottom, section, 27-extraction liquid drain position are restored in 26-material lattice bottom.
The present invention is described in further detail below in conjunction with drawings and Examples.
Embodiment, the present invention is after the exsiccant pyrethrum flowers is pulverized, after the pulverizing of exsiccant pyrethrum flowers, in the material lattice in its large cylindrical appearance device of packing into, the material lattice are made horizontal circumferential motion under driven by motor, with pump solvent normal hexane or sherwood oil or No. 6 solvent oils or kerosene are sprayed on the material simultaneously, solvent load is 5 times of material.The material bed back of solvent diacolation is oozed out from material lattice spacer screen, the extraction liquid that oozes out is derived, hot water indirect heating with 70-90 ℃, elder generation's normal pressure reclaims solvent, and then negative pressure reclaims solvent, acquisition pyrethrin oil production, the wet slag that contains solvent 45-55% after the extraction is packed in the drying chamber, spray into the water vapor direct heating, solvent enters condenser after being heated volatilization, carries out oily water separation after the condensation and reclaims solvent.Solvent is circulated sprinkling in container, and its circulated sprinkling number of times is 8 times.
Above-mentioned used equipment is a bulge, and the form material container is arranged in the container, and there is the support plate washer of material container spacer screen its lower end, and material container is by the chain rack gear of external container, and the chain tooth bar is by driven by motor.There are feed(raw material)inlet and colvent inlet in the container top, wet slag outlet that container has below and extraction liquid outlet.
During production, with the dried flower cryodrying, drying temperature is 60 ℃, and the dried flower water content is lower than below 5%, pulverize at low temperature dried flower then, and pulverizing temperature is 70 ℃, grinding particle size is 1 millimeter.Start step-down gear 10, driving material container with chain 8 rotates with the speed of 80 minutes/commentaries on classics to clockwise direction, and feed intake to 11 of material lattice with 300 kilograms/hour speed, with fresh solvent pump and other recycle pump counterclockwise order install, with 900 kilograms/hour speed spray material.When preheating is after 60 ℃ fresh solvent spray has rotated the material lattice in a week, solvent streams is crossed and is material bedly oozed out for 12 times to come and compile from spacer screen, squeeze into the first spray position 14 of counterclockwise rotating through the first solvent cycle pump, through 6 circulated sprinklings, the extraction liquid that gets to the end takes out from extraction liquid outlet 5 successively; And material has rotated a circle after spraying through 6 times, no longer spray into solvent in the section of draining 24, contained solvent also slowly drains in the material, and when forwarding material lattice bottom unlatching blanking section 25 to, material lattice bottom can slowly be opened automatically, at the bottom of wet slag is fallen into jar, discharge from wet slag outlet 4, and the bottom closes up gradually at recovery phase 26, recovers former state, incoming stock entrance adds new raw material, enters extraction process.
Wet slag after the extraction contains 50% solvent approximately, will spray into direct heat with water vapor behind its importing drying chamber upper strata, and solvent vaporization back enters condenser condenses with steam, reclaims solvent after the branch water outlet.
Claims (5)
1, a kind of method of from dry pyrethrum flower, extracting pyrethrin oil, it is characterized in that after the pulverizing of exsiccant pyrethrum flowers, in the material lattice in its large cylindrical appearance device of packing into, the material lattice are made horizontal circumferential motion under driven by motor, with pump solvent normal hexane or sherwood oil or No. 6 solvent oils or kerosene are sprayed on the material simultaneously, solvent load be material 2-6 doubly.The material bed back of solvent diacolation is oozed out from material lattice spacer screen, the extraction liquid that oozes out is derived, hot water indirect heating with 70-90 ℃, elder generation's normal pressure reclaims solvent, and then negative pressure reclaims solvent, acquisition pyrethrin oil production, the wet slag that contains solvent 45-55% after the extraction is packed in the drying chamber, spray into the water vapor direct heating, solvent enters condenser after being heated volatilization, carries out oily water separation after the condensation and reclaims solvent.
2, method according to claim 1 is characterized in that solvent circulated sprinkling in container, and its circulated sprinkling number of times is 2-10 time.
3, method according to claim 1 is characterized in that extraction temperature is 10-70 ℃ in the extraction process.
4, the equipment that from dry pyrethrum flower, extracts pyrethrin oil according to claim 1, it is characterized in that used extraction equipment is a cylindrical vessel, the form material container of arranging around axis is arranged in the container, there is the support plate washer of material container spacer screen its lower end, and the form material container is driven by chain by motor and rotates around the axis circumference.
5, the equipment that extracts pyrethrin oil from dry pyrethrum flower according to claim 4 is characterized in that there are feed(raw material)inlet and colvent inlet in described container top, wet slag outlet that container has below and extraction liquid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108545 CN1392231A (en) | 2001-06-15 | 2001-06-15 | Method and equipment for extracting pyrethrin oil from dry pyrethrum flower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108545 CN1392231A (en) | 2001-06-15 | 2001-06-15 | Method and equipment for extracting pyrethrin oil from dry pyrethrum flower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1392231A true CN1392231A (en) | 2003-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01108545 Pending CN1392231A (en) | 2001-06-15 | 2001-06-15 | Method and equipment for extracting pyrethrin oil from dry pyrethrum flower |
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| Country | Link |
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| CN (1) | CN1392231A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315556C (en) * | 2003-12-17 | 2007-05-16 | 杨群力 | Process for extracting liposoluble pigment |
| CN101743808B (en) * | 2009-12-23 | 2012-02-22 | 红河森菊生物有限责任公司 | Method for timely collecting, processing and applying pyrethrum leaves |
| CN102669188A (en) * | 2011-03-10 | 2012-09-19 | 西安天一生物技术有限公司 | Pyrethrin extraction and de-colorization method |
-
2001
- 2001-06-15 CN CN 01108545 patent/CN1392231A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315556C (en) * | 2003-12-17 | 2007-05-16 | 杨群力 | Process for extracting liposoluble pigment |
| CN101743808B (en) * | 2009-12-23 | 2012-02-22 | 红河森菊生物有限责任公司 | Method for timely collecting, processing and applying pyrethrum leaves |
| CN102669188A (en) * | 2011-03-10 | 2012-09-19 | 西安天一生物技术有限公司 | Pyrethrin extraction and de-colorization method |
| CN102669188B (en) * | 2011-03-10 | 2014-01-15 | 西安天一生物技术有限公司 | Pyrethrin extraction and de-colorization method |
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