CN1180731C - Method for directionally lowering tobacco tar - Google Patents
Method for directionally lowering tobacco tar Download PDFInfo
- Publication number
- CN1180731C CN1180731C CNB031081444A CN03108144A CN1180731C CN 1180731 C CN1180731 C CN 1180731C CN B031081444 A CNB031081444 A CN B031081444A CN 03108144 A CN03108144 A CN 03108144A CN 1180731 C CN1180731 C CN 1180731C
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- extractor
- tobacco
- carbon dioxide
- supercritical carbon
- housed
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Abstract
The present invention relates to a method for directionally lowering tobacco tar. Tobacco shreds are extracted by supercritical carbon dioxide, precursors of tobacco harmful ingredients and fume harmful constituents are eliminated by the methods of rectification and adsorbing, and remaining beneficial aromatizing ingredients are backfilled into the tobacco shreds with the supercritical carbon dioxide. The present invention has the advantages that the physiological requirements of consumers are satisfied, and damage of the health and environment is avoided simultaneously; besides, the present invention has the advantages of simple technology, low energy consumption and no environmental pollution.
Description
Technical field:
The invention belongs to a kind of method that reduces tobacco tar, relate in particular to a kind of method that reduces the harmful tar of tobacco with supercritical fluid technique.
Background technology:
Smoking is paid close attention to by the whole world with healthy.Tobacco science and technology tentatively discloses, and the oxious component in the tar of cigarette is one of main matter of harm health of smokers, reduces cigarette smoke oxious component burst size, improves the security of sucking of cigarette, is urgent problem in the current cigarette industry development.Harmless according to present achievement in research composition of 99.4% in the cigarette smoke composition of having found, wherein major part is the tobacco flavor matter, have only 0.6% composition harmful, and in this oxious component of 0.6%, only have 0.2% to be carcinogenic and possible carcinogenic composition.Tar content in cigarette is subjected to pipe tobacco component, cigarette to prop up the influence of factors such as comburant quantity, burning condition and filtration, dilution.
Because technology is limit, can't optionally remove these oxious components in the past.So tobacco business is the technology such as filter tip, punching dilution, expanded cut tobacco stem and reconstituted tobacoo by improving air permeance for cigarette paper, different materials structure aspect process technology, reduce tar content in cigarette.So fall tar,, also make to cause fragrant composition and reduce on year-on-year basis, the fragrance of cigarette, jealous and strength are incurred loss though can reduce the part oxious component.Cause that smoke is flat, fragrance is not enough, strength is low excessively, can't satisfy the consumers'physiological requirement.
Summary of the invention:
The purpose of this invention is to provide a kind of the maintenance under original style of cigarette and the jealous prerequisite, orientation reduces the method for tobacco tar
Method of the present invention is exactly with the supercritical carbon dioxide extracting pipe tobacco, the supercritical carbon dioxide that contains the pipe tobacco extract is by step-down, intensification, make the predecessor and the carbon dioxide separation of the harmful component of the tobacco oxious component that contains in the supercritical carbon dioxide and flue gas, and utilize the predecessor absorption of sorbing material with the harmful component of tobacco oxious component and flue gas, all the other are useful to cause fragrant composition and returns with supercritical carbon dioxide and add pipe tobacco.
Method of the present invention comprises the steps:
(1). supercritical carbon dioxide feeds from the extractor bottom that pipe tobacco is housed, flows out from the extractor top, extracting pressure 8～40MPa, temperature is at 30～60 ℃;
(2). flow out from the extractor top, the supercritical carbon dioxide that contains the pipe tobacco extract enters 2～4 grades of rectifying knockout towers that sorbing material is housed, control rectifying knockout tower pressure is 2～28Mpa, and 5～80 ℃ of separation temperatures, the thermograde of rectifying knockout towers at different levels are 5～20 ℃;
(3). carry the useful supercritical carbon dioxide that causes fragrant composition and boost through increasing apparatus and return the extractor that pipe tobacco is housed, circulated 1～5 hour;
(4). reduce extractor temperature, pressure, emptying obtains finished cut tobacco.
Aforesaid sorbing material is active carbon, NACF, stainless steel cloth, diatomite, molecular sieve etc.
The present invention has following advantage:
(1). oxious component or illeffects in the tobacco tar can be reduced, the necessary fragrant composition that causes can be kept in the tobacco tar again.Make cigarette when satisfying the consumers'physiological needs, do not become the enemy of healthy and environment again, achieve many things at one stroke.
(2). extraction, harm reduction, Hui Tian cause fragrant composition and once finish in the charging, and particle consumption is few.
(3). all technology all realizes under the condition of gentleness.Technology is simple, and energy consumption is low, environmental friendliness.
The specific embodiment:
Embodiment 1:
(1). extractor charging feedstock pipe tobacco 2Kg.Supercritical carbon dioxide feeds from its underpart, and flow out at the top.Controlled pressure 28MPa, temperature is at 50 ℃.
(2). flow out from extractor, the supercritical carbon dioxide that contains the pipe tobacco extract enters 4 utmost point rectifying knockout towers that active carbon is housed.Control rectifying knockout tower pressure is 16Mpa, and temperature is respectively 50,60,70,80 ℃.
(3). after boosting to 28MPa, cooling, the supercritical carbon dioxide that is flowed out by the rectifying knockout tower returns extractor, periodic duty 4 hours.
(4). reduce extractor temperature to 20 ℃, step-down, emptying, finished cut tobacco.
Embodiment 2:
(1). extractor charging feedstock pipe tobacco 2Kg.Supercritical carbon dioxide feeds from its underpart, and flow out at the top.Controlled pressure 28MPa, temperature is at 50 ℃.
(2). flow out from extractor, the supercritical carbon dioxide that contains the pipe tobacco extract enters diatomaceous 2 utmost point rectifying knockout towers is housed.Control rectifying knockout tower pressure is 20Mpa, and temperature is respectively 60,80 ℃.
(3). after boosting, lower the temperature, the supercritical carbon dioxide that is flowed out by the rectifying knockout tower returns extractor, periodic duty 3 hours.
(4). reduce extractor temperature to 20 ℃, step-down, emptying, finished cut tobacco.
Embodiment 3:
(1). extractor charging feedstock pipe tobacco 2Kg.Supercritical carbon dioxide feeds from its underpart, and flow out at the top.Controlled pressure 28MPa, temperature is at 50 ℃.
(2). flow out from extractor, the supercritical carbon dioxide that contains the pipe tobacco extract enters 3 utmost point rectifying knockout towers that stainless (steel) wire is housed.Control rectifying knockout tower pressure is 12Mpa, and temperature is respectively 40,60,80 ℃.
(3). after boosting, lower the temperature, the supercritical carbon dioxide that is flowed out by the rectifying knockout tower returns extractor, periodic duty 5 hours.
(4). reduce extractor temperature to 20 ℃, step-down, emptying, finished cut tobacco.
Embodiment 4:
(1). extractor charging feedstock pipe tobacco 2Kg.Supercritical carbon dioxide feeds from its underpart, and flow out at the top.Controlled pressure 32MPa, temperature is at 50 ℃.
(2). flow out from extractor, the supercritical carbon dioxide that contains the pipe tobacco extract enters 4 utmost point rectifying knockout towers that NACF is housed.Control rectifying knockout tower pressure is 20Mpa, and temperature is respectively 55,60,65,70 ℃.
(3). after boosting, lower the temperature, the supercritical carbon dioxide that is flowed out by the rectifying knockout tower returns extractor, periodic duty 4 hours.
(4). reduce extractor temperature to 20 ℃, step-down, emptying, finished cut tobacco.
Claims (2)
1. a directed method that reduces tobacco tar is characterized in that comprising the steps:
(1) supercritical carbon dioxide feeds from the extractor bottom that pipe tobacco is housed, flow out from the extractor top, and extracting pressure 8～40MPa, temperature is at 30～60 ℃;
(2) flow out from the extractor top, the supercritical carbon dioxide that contains the pipe tobacco extract enters 2～4 grades of rectifying knockout towers that sorbing material is housed, control rectifying knockout tower pressure is 2～28Mpa, and 5～80 ℃ of separation temperatures, the thermograde of rectifying knockout towers at different levels are 5～20 ℃;
(3) carry the useful supercritical carbon dioxide that causes fragrant composition and boost through increasing apparatus and return the extractor that pipe tobacco is housed, circulated 1～5 hour;
(4) reduce extractor temperature, pressure, emptying obtains finished cut tobacco.
2. a kind of directed method that reduces tobacco tar as claimed in claim 1 is characterized in that described sorbing material is active carbon, NACF, stainless steel cloth, diatomite, molecular sieve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031081444A CN1180731C (en) | 2003-03-21 | 2003-03-21 | Method for directionally lowering tobacco tar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031081444A CN1180731C (en) | 2003-03-21 | 2003-03-21 | Method for directionally lowering tobacco tar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1459256A CN1459256A (en) | 2003-12-03 |
| CN1180731C true CN1180731C (en) | 2004-12-22 |
Family
ID=29430198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031081444A Expired - Fee Related CN1180731C (en) | 2003-03-21 | 2003-03-21 | Method for directionally lowering tobacco tar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1180731C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420106A (en) * | 2018-03-22 | 2018-08-21 | 宝可科技（上海）有限公司 | A kind of filter tip perfume (or spice) and its preparation method and application |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201003887D0 (en) | 2010-03-09 | 2010-05-12 | British American Tobacco Co | Methods for extracting and isolating constituents of cellulosic material |
| GB201707758D0 (en) | 2017-05-15 | 2017-06-28 | British American Tobacco Investments Ltd | Ground tobacco composition |
-
2003
- 2003-03-21 CN CNB031081444A patent/CN1180731C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108420106A (en) * | 2018-03-22 | 2018-08-21 | 宝可科技（上海）有限公司 | A kind of filter tip perfume (or spice) and its preparation method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1459256A (en) | 2003-12-03 |
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