CN1025499C - Method of extracting nicotine from waste tobacco powder - Google Patents
Method of extracting nicotine from waste tobacco powder Download PDFInfo
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- CN1025499C CN1025499C CN 88105700 CN88105700A CN1025499C CN 1025499 C CN1025499 C CN 1025499C CN 88105700 CN88105700 CN 88105700 CN 88105700 A CN88105700 A CN 88105700A CN 1025499 C CN1025499 C CN 1025499C
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- liquid
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Abstract
The present invention relates to a method for extracting nicotine from waste tobacco smalls, which comprises the following processes: soaking, filtration, distillation, concentration, alkalization, extraction, recovery and refining. Nicotine solution with over 90% of purity, which is extracted by the present invention, is widely used in industries of agriculture, navigation, medicine, tobacco, etc., can especially be directly used as a cigarette additive and can have good social and economic benefit. The present invention can also be suitable for extracting nicotine from waste and low quality tobacco leaves.
Description
The present invention relates to the technological method of extraction nicotine in a kind of waste tobacco powder of ranks such as agricultural, medicine and tobacco.
At present, a large amount of waste tobacco powders and the inferior tobacco of each cigar mill are all handled as rubbish, and this has not only improved cost but also increased the weight of environmental pollution.Processing method that a kind of employing " alkalizes-extract-boil and heat up in a steamer-reclaim " extraction nicotine and make two nicotine picrates from tobacco leaf has been introduced in experiment 5 in " modern Experiment of Organic Chemistry technology introduction " (Science Press, first version in 1985) book that the little Ke Lizi of U.S. DL Pavia, GM Lan Puman and GS collaborates.This method has following defective: contain a large amount of soluble substances in the tobacco soak solution of (1) alkalization process, and not easily separated, directly have influence on effect of extracting and nicotine purity.(2) extraction process diethyl ether solution agent boiling point is low, and consumption is big, and recovering condition height (needing cold-trap) be difficult to operation, thereby production cost increases.The pure experimental technique of this method is not suitable for producing in batches.(3) two nicotine picrate bitters are insoluble in water and poisonous, can not directly be used as cigaret additive.China's " Science and Technology Daily " reported a kind of method of extracting nicotine sulfate from waste tobacco of Luoyang, Henan Province teacher training school on January 25th, 1988, but nicotine sulfate is a kind of mineral acid salt, also is not suitable for and makes cigaret additive.
The objective of the invention is to overcome the defective or the deficiency of aforesaid method, the technical matters method of the nicotine products that a kind of production cost is lower, the scope of application is wide, purity is higher is provided.
The present invention comprises following eight technological processs altogether:
One, soaks: waste tobacco powder is immersed in the dilute acid soln, obtains soak.The equivalent of diluted acid is 0.04N to 0.4N, and the weight ratio of waste tobacco powder and diluted acid is 1: 5 to 1: 20, and soak time is 12 hours to 72 hours.
Two, filter: normal temperature and pressure filters.
Three, distillation: 1% to 5% the salt that earlier with weight is filtered liquid weight adds filtered liquid, adds highly basic again after fully stirring, and obtains to be the mixed solution of alkalescence, pH 〉=10 of control mixed solution.Boil the distillation mixed solution then under normal temperature and pressure conditions, boiling temperature is about 108 ℃.Be distillate behind 15% to 25% the dilute hydrochloric acid absorption condensation with weight percent concentration at last, obtain distillate.Whole still-process is wanted continuous supplemental acid amount, pH≤3 of control distillate.Also can adopt sulfuric acid, phosphoric acid, oxalic acid to absorb distillate, but its concentration should be adjusted accordingly.
Four, concentrate: the distillate evaporation concentration that will go up the step is to 1/5 to 1/6 of original volume.
Five, alkalization: highly basic is added concentrated solution, stir the cooling back and obtain alkaline solution.The pH value of control alkaline solution is 11 to 13.
Six, extraction: chloroform is added alkaline solution, fully obtain extraction liquid after stirring and the static layering.The volume ratio of alkaline solution and chloroform is 1: 0.5 to 1: 1.
Seven, reclaim: under the condition that keeps the chloroform boiling temperature, water-bath distillation extraction liquid, surplus materials just are nicotinic liquid (free nicotine).
Eight, refining: as, finally to obtain the nicotinic liquid of purity more than 90% with nicotinic liquid water-bath distillation once more.Bath temperature is 90 ℃ to 100 ℃.
The present invention is equally applicable to extraction nicotine in the inferior tobacco, but should earlier inferior tobacco be pulverized.
Characteristics of the present invention are: (1) technological process is simple, especially adopts straight run distillation technology to replace the vapor distillation technology of continuing to use so far both at home and abroad, can save a large amount of energy, reduce production costs, and easy-to-operate, good in economic efficiency.Both be applicable to small serial production, be applicable to suitability for industrialized production again.(2) adopt chloroform as extraction agent.Compare with ether, the boiling point of chloroform is higher, does not need cold-trap during recovery, and power consumption is few, rate of recovery height.Chloroform after the recovery still can reuse.(3) comprehensive utilization waste tobacco powder or inferior tobacco are turned waste into wealth social and economic benefits and good.Utilize the present invention can obtain purity and reach nicotinic liquid more than 90%, for new way has been opened up in the widespread use of foreign exchange earning and agricultural, navigation, medicine and tobacco industry.(4) the oxalic acid nicotine of nicotinic liquid and conversion generation thereof can be directly as cigaret additive, for high-grade safety type or the new cigarette kind of developing low tar, high-nicotine provides new raw material.
Claims (2)
1, a kind of from waste tobacco powder the method for extraction nicotine, it is characterized in that the present invention has comprised following eight technological processs:
(1) soaks: waste tobacco powder is immersed in the dilute acid soln, obtains soak; The equivalent of diluted acid is 0.04N to 0.4N, and the weight ratio of waste tobacco powder and diluted acid is 1: 5 to 1: 20, and soak time is 12 hours to 72 hours;
(2) filter: normal temperature and pressure filters;
(3) distillation: 1% to 5% the salt that earlier with weight is filtered liquid weight adds transition liquid, adds highly basic again after fully stirring, and obtains to be the mixed solution of alkalescence, pH 〉=10 of control mixed solution; Boil the distillation mixed solution then under normal temperature and pressure conditions, boiling temperature is about 108 ℃; Be distillate behind the absorption condensations such as 15% to 25% dilute hydrochloric acid or dilute sulphuric acid, dilute phosphoric acid, oxalic acid solution with weight percent concentration at last, obtain distillate; Whole still-process is wanted continuous supplemental acid amount, pH≤3 of control distillate;
(4) concentrate: the distillate evaporation concentration that will go up the step is to 1/5 to 1/6 of original volume;
(5) alkalization: highly basic is added concentrated solution, stir the cooling back and obtain alkaline solution; The pH value of control alkaline solution is 11 to 13;
(6) extraction: chloroform is added alkaline solution, fully obtain extraction liquid after stirring and the static layering; The volume ratio of alkaline solution and chloroform is 1: 0.5 to 1: 1;
(7) reclaim: under the condition that keeps the chloroform boiling temperature, water-bath distillation extraction liquid, surplus materials just are nicotinic liquid (free nicotine);
(8) refining: as, finally to obtain the nicotinic liquid of purity more than 90% with nicotinic liquid water-bath distillation once more; Bath temperature is 90 ℃ to 100 ℃.
2, according to claim 1 a kind of from waste tobacco powder the method for extraction nicotine, the absorption liquid that it is characterized in that still-process is a dilute hydrochloric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105700 CN1025499C (en) | 1988-04-20 | 1988-04-20 | Method of extracting nicotine from waste tobacco powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105700 CN1025499C (en) | 1988-04-20 | 1988-04-20 | Method of extracting nicotine from waste tobacco powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN88105700A CN88105700A (en) | 1988-12-14 |
| CN1025499C true CN1025499C (en) | 1994-07-20 |
Family
ID=4833849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105700 Expired - Fee Related CN1025499C (en) | 1988-04-20 | 1988-04-20 | Method of extracting nicotine from waste tobacco powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1025499C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245230C (en) * | 2003-01-06 | 2006-03-15 | 姚林林 | Liquid preparation method and equipment |
| CN102659760B (en) * | 2012-04-12 | 2013-12-18 | 湖南省健鑫生物科技有限公司 | Extraction technology of nicotine by acid process |
| CN104026728B (en) * | 2014-06-25 | 2016-02-10 | 湖南中烟工业有限责任公司 | A kind of electronic cigarette liquid with baking fragrance |
| CN104725351B (en) * | 2015-02-15 | 2017-07-28 | 洛阳市甘霖生物技术有限公司 | A kind of method that high-purity nicotine is extracted from waste tobacco |
| CN107376392A (en) * | 2017-08-03 | 2017-11-24 | 湖北和诺生物工程股份有限公司 | A kind of apparatus and method using rectifying column extraction nicotine |
| CN110511210A (en) * | 2019-09-12 | 2019-11-29 | 许达勇 | High purity nicotine production technology |
| CN110786539A (en) * | 2019-10-30 | 2020-02-14 | 上海零诺生物科技有限公司 | Method for removing tobacco absolute nicotine and electronic cigarette liquid |
| CN111848576B (en) * | 2020-06-30 | 2022-07-05 | 湖北和诺生物工程股份有限公司 | Nicotine extraction system and extraction method |
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1988
- 1988-04-20 CN CN 88105700 patent/CN1025499C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN88105700A (en) | 1988-12-14 |
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