CN100496308C - Semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method - Google Patents
Semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method Download PDFInfo
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Abstract
The present invention relates to a paper-making method regenerated tobacco leaf semi-counter-current multi-stage extraction process. It is characterized by that on the basis of traditional multi-stage counter-current process said invention makes the following improvements: using 20-50% of first extract obtained after an extraction process as extraction agent for next extraction process, and using the residual 50-80% as extracted product. Said extraction process can reduce solvent dose and can raise extract concentration.
Description
Technical field
The present invention relates to a kind of semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method, belong to the paper process tobacco and reproduce the field.
Background technology
Papermaking-method reconstituted tobaccos is to be raw material with tobacco waste such as offal, tobacco cut, offal or inferior grade tobacco leaf, adopts extraction principle and paper technology, makes a kind of tobacco material that forms.The extraction of soluble component is one of critical process in the papermaking-method reconstituted tobaccos manufacturing process in the tobacco, and its ideal technology target is to consume less solvent, reaches higher extraction yield, obtains the higher extract of concentration.
The papermaking-method reconstituted tobaccos extraction process flow adopts single jar, jar group or continuous extraction mode once to three times and above following current or adverse current form at present.In the existing disclosed technical literature, mostly be that form with adverse current extracts, as U.S. Pat 4270552, it discloses three grades of extraction process of adverse current of a kind of papermaking-method reconstituted tobaccos, tobacco leaf is successively continuously through first～the 3rd extractor, fresh water is introduced from the 3rd extractor, enters last extractor then continuously, and the one-level extract of gained all enters the water smoking.Document WO 20041005 also discloses the tertiary treatment technology of tobacco leaf, tobacco leaf fully submergence in three extractors successively, and the flow direction of solvent is opposite with tobacco leaf, adds at the 3rd extractor as the fresh water of extractor.More than two kinds of methods all do not carry out shunting process, solvent consumption is very big, the power consumption of follow-up enrichment process is also very big.Therefore the deficiency of technological process at present mainly shows simple following current or the reflux type of adopting, and the consumption solvent is many, and extract concentration is low, brings follow-up enrichment process to consume energy greatly.
Summary of the invention
The object of the present invention is to provide a kind of new extraction process, guarantee under the prerequisite of certain extraction yield, reduce solvent load, improve extract concentration, reduce the water consumption of extraction process, and further reduce the energy consumption of enrichment process.
The present invention mainly is the characteristics according to three aspects: 1) the tobacco water imbibition is very strong, swollen progressively in extraction process, and volume increases; 2) in the multitple extraction process, total material of tobacco and DDGS reduce step by step, and extraction yield reduces step by step; 3) repeatedly behind the counter-current extraction, the solvent extraction ability is unsaturation also.Adverse current, following current extraction dual mode are combined, obtain higher extraction yield and extract concentration, obtain the effect that cuts down the consumption of energy with less solvent.
A kind of semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method, it is characterized in that on the basis of traditional multi-stage countercurrent technology, carrying out following improvement: will be through the extractant of 20～50% in the one-level extract that obtains after the extraction process as the next stage extraction, remaining 50～80% products as extraction.
Further, with three grades of extractions is example, on the basis of traditional three stage countercurrents extraction, in the extract that obtains after the extraction process 20～50% mixed with three grades of extracts that third level extraction obtains, as the solvent of second level extraction, another part enters down the operation that concentrates together as the product of extraction.
With three counter-current extractions is example, concrete extraction process is: when extraction beginning first, fresh solid material A and fresh solvent mix, stir, the dehydration Separation of Solid and Liquid, get extract A1 and solid insoluble A1, extract A1 removes enrichment process, add fresh solvent among the solid insoluble A1, mix, stir, the dehydration Separation of Solid and Liquid, get extract A2 and solid insoluble A2, extract A2 is standby, adds fresh solvent among the solid insoluble A2, mix, stir, the dehydration Separation of Solid and Liquid, get extract A3 and solid insoluble A3, extract A3 is standby, and solid insoluble A3 enters next procedure; Fresh solid material B and extract A2 mixing, stirring, dehydration Separation of Solid and Liquid, get extract B1 and solid insoluble B1, extract B1 removes enrichment process, adds extract A3 among the solid insoluble B1, mixing, stirring, dehydration Separation of Solid and Liquid, get extract B2 and solid insoluble B2, extract B2 is standby, adds fresh water among the solid insoluble B2, mixing, stirring, dehydration Separation of Solid and Liquid, get extract B3 and solid insoluble B3, extract B3 is standby, and solid insoluble B3 enters next procedure; Fresh solid material C adds extract B2 and extracts, and gets extract C1 and solid insoluble C1, and extract C1 goes next procedure, and solid insoluble C1 adds extract B3 and extracts, and the like, production run continuously.In whole extraction process, solid material is successively through first extractor---second extractor---the 3rd extractor, fresh extractant replenishes from the 3rd extractor, enter the 3rd extractor successively---second extractor---first extractor extracts, the one-level extract after the whole circulation process is final extraction product.The present invention improves on the basis of multi-stage counter current extraction.
Adopt above-mentioned extraction mode, can reduce replenishing of the 3rd extractor fresh solvent, and by the reuse of part extract, guarantee the solid material in second, first extractor and the proportioning of solvent, guarantee that whole extraction process reaches certain extraction yield, thereby improved extract concentration, reduced the energy consumption of solvent consumption and road, back enrichment process.
The consumption of the extractant described in the extraction process provided by the invention is 3～6 times of solid material, and extraction temperature is 50～80 ℃, and the extraction time is 30～90min, and every grade dehydration mass dryness fraction is 25～35%.
Above-mentioned technology is applicable to jar group extraction and the extraction of segmentation spiral.
Beneficial effect of the present invention:
Following current and adverse current are combined, reduce under the very little situation, can reduce a large amount of water consumptions and the next procedure evaporation heat consumption when concentrated in extraction yield.As attached example explanation,, consume 5 times of water according to three stage countercurrent modes, can reach extraction yield is 45.18%, and according to three grades of extraction modes of half adverse current, is consuming under 4 times of regimen conditions, save 1 times of water, extraction yield can reach 42.23%, and back road evaporation and concentration also can be saved 1 times of evaporation of water heat.Suppose and produce 10000 tons of paper process thin slices per year, the product yield is calculated by 80%, needs year to feed intake 12500 tons, if save 1 times of water, then can save 12500 tons of water, under normal pressure, evaporate, 1kg normal temperature (25 ℃) water down heats vaporization evaporation fully, needs power consumption 2573kj, and year can save 3.22 * 10 according to this
10The heat of kj can produce 3 * 10 according to 1 ton of high-quality fire coal
7The kj heat, year can be saved 1073 tons of coals, saves more than 50 ten thousand yuan, can save 20% evaporation equipment investment simultaneously, and the labour cost of evaporation and concentration.
Description of drawings
Fig. 1 is the FB(flow block) of three grades of extraction process of half adverse current provided by the invention
The specific embodiment
Embodiment 1
At extraction conditions be: 65 ℃, every grade extraction dehydration mass dryness fraction is 30%, material extracts 40min, 10min, 10min respectively at first, second and third extractor, each the 3rd extractor adds the water of 5 times of quality of solid material, complete three counter-current extractions run to the 3rd extraction cycle (normal stable circulation cycle), extraction yield 86% relatively.
Adopt three grades of extraction procedure of half adverse current, under the similarity condition, the 3rd extractor adds the water of 4 times of quality of solid material, 1 times of first extract of the second extractor reuse, run to the 3rd extraction cycle, extraction yield can reach 83% relatively, can reduce by 1 times of quality water consumption simultaneously, and has also reduced the evaporation power consumption when this 1 times of water concentrates.
Adopt three grades of extraction procedure of half adverse current, under the similarity condition, the 3rd extractor adds the water of 3 times of quality of solid material, 2 times of first extract of the second extractor reuse, run to the 3rd extraction cycle, extraction yield can reach 81% relatively, can reduce by 2 times of quality water consumptions simultaneously, and has also reduced the evaporation power consumption when these 2 times of water concentrate.
Embodiment 2
At extraction conditions be: 50 ℃, every grade extraction dehydration mass dryness fraction is 35%, material extracts 30min, 30min, 30min respectively at first, second and third extractor, each the 3rd extractor adds the water of 6 times of quality of solid material, complete three counter-current extractions run to the 3rd extraction cycle (normal stable circulation cycle), extraction yield 91% relatively.
Adopt three grades of extraction procedure of half adverse current, under the similarity condition, the 3rd extractor adds the water of 5 times of quality of solid material, 1 times of first extract of the second extractor reuse, run to the 3rd extraction cycle, extraction yield can reach 89% relatively, can reduce by 1 times of quality water consumption simultaneously, and has also reduced the evaporation power consumption when this 1 times of water concentrates.
Embodiment 3
At extraction conditions be: 80 ℃, every grade extraction dehydration mass dryness fraction is 25%, material extracts 40min, 10min, 10min respectively at first, second and third extractor, each the 3rd extractor adds the water of 5 times of quality of solid material, complete three counter-current extractions run to the 3rd extraction cycle (normal stable circulation cycle), extraction yield 85% relatively.
Adopt three grades of extraction procedure of half adverse current, under the similarity condition, the 3rd extractor adds the water of 4 times of quality of solid material, 1 times of first extract of the second extractor reuse, run to the 3rd extraction cycle, the materials abstraction rate can reach 83%, can reduce by 1 times of quality water consumption simultaneously, and has also reduced the evaporation power consumption when this 1 times of water concentrates.
Claims (3)
1. semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method, it is characterized in that on the basis of traditional multi-stage countercurrent technology, carrying out following improvement: will be through the extractant of 20～50% in the one-level extract that obtains after the extraction process as the next stage extraction, remaining 50～80% products as extraction.
2. a kind of semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method according to claim 1, the technological parameter that it is characterized in that extraction process is: the consumption of extractant is 3～6 times of solid material, extraction temperature is 50～80 ℃, the extraction time is 30～90min, and every grade dehydration mass dryness fraction is 25～35%.
3. a kind of semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method according to claim 1 is characterized in that described extraction process is applicable to jar group extraction or the extraction of segmentation spiral.
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| CNB2006100272459A CN100496308C (en) | 2006-06-02 | 2006-06-02 | Semi-countercurrent multi-stage extracting process for reproducing tobacco leaves by paper-making method |
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| CN100496308C true CN100496308C (en) | 2009-06-10 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102488319B (en) * | 2011-11-27 | 2014-01-29 | 中国海诚工程科技股份有限公司 | Continuous extraction method and device of papermaking reconstituted tobacco |
| CN102726824A (en) * | 2012-07-17 | 2012-10-17 | 江苏清大国华环保科技有限公司 | Reconstituted tobacco raw material continuous extraction process |
| CN106962972B (en) * | 2017-03-20 | 2018-03-27 | 河南中烟工业有限责任公司 | A kind of counterextraction method for lifting discarded tobacco leaf quality |
| CN107048465B (en) * | 2017-03-30 | 2018-03-20 | 安徽中烟工业有限责任公司 | A kind of dynamic gradient pH three-level counter-current extraction techniques of reconstituted tobacco offal raw material |
| CN110025975B (en) * | 2019-01-07 | 2021-09-10 | 云南农业大学 | Tobacco online countercurrent spiral extraction device |
| CN115606804A (en) * | 2022-11-01 | 2023-01-17 | 陈爱君 | Preparation method of cold-extracted wolfberry fruit primary pulp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5183062A (en) * | 1990-02-27 | 1993-02-02 | R. J. Reynolds Tobacco Company | Cigarette |
| CN1020903C (en) * | 1986-09-15 | 1993-05-26 | 詹森药业有限公司 | (1h-imidazol-1-ylmethyl) substituted benzimidazole derivatives and the preparation therefor |
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- 2006-06-02 CN CNB2006100272459A patent/CN100496308C/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1020903C (en) * | 1986-09-15 | 1993-05-26 | 詹森药业有限公司 | (1h-imidazol-1-ylmethyl) substituted benzimidazole derivatives and the preparation therefor |
| US5183062A (en) * | 1990-02-27 | 1993-02-02 | R. J. Reynolds Tobacco Company | Cigarette |
Non-Patent Citations (2)
| Title |
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| 化学工程. 124－125和148，化学工业出版社. |
| 化学工程. 124－125和148，化学工业出版社. * |
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