CN105124741A - Method for selectively reducing content of Ni in paper-making reconstituted tobacco extraction liquid - Google Patents
Method for selectively reducing content of Ni in paper-making reconstituted tobacco extraction liquid Download PDFInfo
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- CN105124741A CN105124741A CN201510547747.3A CN201510547747A CN105124741A CN 105124741 A CN105124741 A CN 105124741A CN 201510547747 A CN201510547747 A CN 201510547747A CN 105124741 A CN105124741 A CN 105124741A
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Abstract
The invention discloses a method for selectively reducing the content of Ni in paper-making reconstituted tobacco extraction liquid. The method is characterized in that the tobacco extraction liquid prepared according to the paper-making reconstituted tobacco production technology is led into a dilution chamber of an electrodialysis device so that the content of Ni can be reduced through electrodialysis processing, and in the Ni content reducing process, the Ni removal degree is controlled through the change of conductivity in the dilution chamber or the actual content of Ni; meanwhile, the content of nicotine and the total amount of organic acid in the dilution chamber are detected to inspect selectivity of Ni removal. The method can effectively reduce the content of Ni in the reconstituted tobacco extraction liquid, meanwhile, lose of main organic acid of nicotine and tobacco can be avoided, and smoking quality of reconstituted tobacco is guaranteed to the largest extent.
Description
Technical field
The present invention relates to a kind of selective reduction method of papermaking-method reconstituted tobaccos Ni content, belong to papermaking-method reconstituted tobaccos production technical field.
Background technology
According to Huffman harmful ingredients in flue gas list, heavy metal belongs to the harmful substance that in cigarette smoke, a class is main, wherein mainly comprises arsenic, Qian, Cadmium, chromium, nickel etc.Cigarette is burning and sucking in process, and heavy metal can enter human body with main flume, and in each organ enrichment of health, and then affect healthy.Therefore nickel (Ni) content reduced in tobacco and flue gas contributes to the security promoting smoking property of cigarette.
Papermaking-method reconstituted tobaccos is a kind of restructuring tobacco, and it has that burn rate is fast, releasing content of coke tar is low, Filling power is high and the feature such as degrading resistance property is good.The important step that extracting tobacco concentrate is produced as papermaking-method reconstituted tobaccos, its quality is the key factor affecting Chip Quality, but the current method still lacking effective heavy metal element reduced in reconstituted tobacco extract.At present, remove nickel ion in water in industry to have been reported.Chinese patent CN104230054A discloses the minimizing technology of nickel ion in waste water, and utilize zeolite molecular sieve heavy metal nickel ion Adsorption, clearance is at 98.5%-99%.Chinese patent CN103011475A discloses a kind of method removing nickel in sewage, by adding aluminium polychloride, ionic dispersants and surfactant in nickeliferous sewage, stir, aeration thus reach and remove the object of nickel, clearance can reach more than 99.9%.But the removal utilizing electrodialytic technique to realize Ni ion in tobacco extraction liquid is not also reported.Electrodialytic technique utilizes amberplex to the selective penetrated property energy of anions and canons, under DC electric field effect, makes anions and canons generation directional migration, thus reach the separation of electrolyte solution, purification and concentrated object.Now the industries such as chemical industry, medicine, papermaking are widely used in.Chinese patent CN103182248A discloses and utilizes electrodialysis methods to remove the heavy metals such as shellfish extract Zhong Cadmium, lead, reduces effect comparatively remarkable.Patent CN103082394A, CN103330277A and US4302308A, US4253929 disclose the chlorion, the nitrate ion that utilize in electrodialysis methods removal tobacco extract or reconstituted tobacco extract, but these patents all do not investigate the removal effect to Ni.Chinese patent CN102406230A discloses and uses the method for electrodialysis coupled ion exchange column chromatography to remove As, Pb and Cd in tobacco extraction liquid, and removal efficiency reaches as high as 90%, but this patent does not investigate the impact processed nicotine and cigarette sensory quality.Common electrodialytic technique is while realizing chlorion, the selective removal of nitrate anion plasma compound relative to nonionic compound (fructose, glucose, pectin etc.), usually also cause a large amount of losses of tobacco ionic active principle (nicotine and organic acid), this will cause smoking property of cigarette quality to decline.Xiang Haiying etc. use IONSEP
tMwhile amberplex removes chlorion, find that nicotine also reduces by more than 50% (in stem extracting solution, the electroosmose process of chlorion removes, tobacco science and technology, 2015,1:72-75).Therefore, while raising reconstituted tobacco extract intermediate ion removal efficiency, the active ingredient (nicotine and organic acid) how effectively retaining tobacco is electrodialysis process tobacco extraction liquid key issue urgently to be resolved hurrily, is also the key problem in technology of electrodialytic technique application in papermaking-method reconstituted tobaccos is produced.
Summary of the invention
The present invention be directed to a large amount of losing issue of nicotine existing for above-mentioned existing electrodialytic technique and a kind of Ni selective regulation method that production technology is simple, controllability is strong developed, can be widely used in papermaking-method reconstituted tobaccos extract, make the selective reduction of Ni content, and effectively avoid nicotine and organic acid to run off, while reduction Ni content, significantly improve papermaking-method reconstituted tobaccos sucking quality.
The present invention efficiently reduces Ni content in tobacco extraction liquid by the selective use through film of univalent anion, and effectively prevent nicotine and organic acid loss, achieves the selective of Ni content reduction.
Technical solution problem of the present invention, adopts following technical scheme:
The selective reduction method of Ni content in papermaking-method reconstituted tobaccos extract of the present invention, is characterized in that:
A, the diluting compartment of electrodialysis plant will be introduced according to the tobacco extraction liquid prepared by papermaking-method reconstituted tobaccos production technology, and in enriched chamber, add water or electrolyte; The solid content of described tobacco extraction liquid is 7-10%.
The anion-exchange membrane of described electrodialysis plant is that univalent anion is selective through film, and cation-exchange membrane is preferably homogeneous phase cation exchange film.
The step preparing tobacco extraction liquid according to papermaking-method reconstituted tobaccos production technology is: add in agitator tank by papermaking-method reconstituted tobaccos raw material (offal, tobacco leaf and/or offal), add the water of 4-10 times of weight, stir extraction 1 hour, Double screw pulp extruder is used to carry out Separation of Solid and Liquid, the tabacco water solution obtained to shake sieve coarse filtration through 80-120 object, centrifugation under 2500-3500rmb speed conditions again, clear liquid is the tobacco extraction liquid needed for electrodialysis process.
B, under constant current conditions electrodialysis process is carried out to tobacco extraction liquid and remove Ni ion, namely carry out nickel removal process; The flow of electrodialysis process is 4-8L/min; Constant current density is 10-15mA/cm
2.
C, in nickel removal processing procedure, carry out control treatment degree by the change of diluting compartment internal conductance rate or the actual content of Ni; To detect in diluting compartment nicotine content and organic acid total amount (comprising citric acid, oxalic acid and malic acid) to investigate the selective of nickel removal process simultaneously;
D, by the tobacco extraction liquid after nickel removal according to papermaking-method reconstituted tobaccos production technology proceed process, for the processing of reconstituted tobacco.
Under usual condition, tobacco extract is in acid, and its pH scope is about 4.5-6.5, and nicotine wherein mainly exists with the form of monovalent salt.In theory, nicotine is by monovalence selective ion exchange membrane, but experiment finds: in electrodialytic process, nicotine is selective through film not by univalent anion, this may be mainly that univalent anion is selective has physical preferences through film to it because the ionic hydration radius of nicotine anion is large.Thus the present invention can pass through the selective use through film of univalent anion, in efficient reduction tobacco extraction liquid while Ni content, effectively prevent nicotine and organic acid loss, achieve the selective reduction of Ni content.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, the present invention can not only effectively reduce Ni content, nicotine and the main organic acid of tobacco can be avoided simultaneously to run off, promote the quality of papermaking-method reconstituted tobaccos extract, farthest ensure that the sucking quality of reconstituted tobacco.
2, production technology of the present invention is simple, controllability strong, steady quality, can be widely used in the selective reduction of Ni content in papermaking-method reconstituted tobaccos extract.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail
Embodiment 1:
Being that tobacco extraction liquid prepared by raw material with tobacco leaf, is that the tobacco extraction liquid of 8% loads and is provided with 10 pairs of amberplexes (wherein cavity block is Selemion by 450mL solid content
tMunivalent anion is selective through film, and anode membrane is Selemion
tMmonovalent cation is selective through film, and effective area is 1 square metre) electrodialysis plant diluting compartment in, and in enriched chamber, add the running water of 500mL; At 10mA/cm
2constant current density condition under, carry out electrodialysis process 40min under the flow of 5L/min.
After tested, after process, in diluting compartment, the electrical conductivity of tobacco extraction is reduced to 7.92mS/cm by initial 14.61mS/cm.
Being provided with 10 pairs of conventional ion exchange membranes, (anion-exchange membrane is homogeneous-phase anion exchange film CJA-2, cation-exchange membrane is homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufactures) electrodialysis plant in carry out the electrodialysis process contrast test of identical tobacco extraction liquid, test parameters is except amberplex difference used, and other parameter is all identical.
After two kinds of membrane stack process, in diluting compartment, the chemical analysis results of tobacco extraction liquid is in table 1, result shows: compared with common homogeneous ion-exchange membrane, monovalent ion is selective to be realized under the diminishbb prerequisite of Ni content through film, significantly can improve selective relative to nicotine of Ni content, avoid a large amount of losses of nicotine, organic acid (mainly comprising citric acid, oxalic acid and malic acid) have also been obtained good reservation simultaneously.
The evaluation result of the papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after the process of use two kinds of electrodialysis membrane stacks shows: compared with using the non-selective removal contrast of common homogeneous ion-exchange membrane, through monovalent ion selective through the papermaking-method reconstituted tobaccos after film selective removal suck strength and burn rate all significantly promotes, and organoleptic quality entirety improves.
Table 1
Embodiment 2:
Being that tobacco extraction liquid prepared by raw material with offal, is that the tobacco extraction liquid of 8% loads and is provided with 10 pairs of amberplexes (wherein cavity block is Selemion by 500mL solid content
tMunivalent anion is selective through film; Cation-exchange membrane is CJC-2 homogeneous phase cation exchange film, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufacture) electric dialyzator diluting compartment in; The sodium sulphate of the 1.0mol/L of 500mL is added as initial electrolyte in enriched chamber; At 13mA/cm
2constant current density condition under carry out electrodialysis process 55min.After tested, after process, in diluting compartment, the electrical conductivity of tobacco extraction liquid is reduced to 6.1mS/cm by initial 16.5mS/cm.
Being provided with 10 pairs of conventional ion exchange membranes, (anion-exchange membrane is homogeneous-phase anion exchange film CJA-2, cation-exchange membrane is homogeneous phase cation exchange film CJC-2, Hefei Ke Jia macromolecular material Science and Technology Ltd. manufactures) electric dialyzator in carry out the electrodialysis process contrast test of identical tobacco extraction liquid, outside test parameters deionization exchange membrane, other parameter is all identical.
After two kinds of membrane stack process, in diluting compartment, the chemical analysis results of tobacco extraction liquid is in table 2, result shows: compared with common homogeneous-phase anion exchange film, univalent anion is selective to be realized under the prerequisite that Ni content significantly reduces through film, significantly can improve selective relative to nicotine of Ni content, avoid a large amount of losses of nicotine, organic acid have also been obtained good reservation simultaneously.
The evaluation result of the papermaking-method reconstituted tobaccos prepared by the tobacco extraction liquid after the process of use two kinds of electrodialysis membrane stacks shows: compared with using the non-selective removal contrast of Ni ion of common homogeneous-phase anion exchange film, significantly promote through the selective strength of sucking through the papermaking-method reconstituted tobaccos after film selective removal of univalent anion, and the organoleptic indicator such as pleasant impression and excitant is improved.
Comparative example 1 and embodiment 2 also known, when the anion-exchange membrane of electrodialysis plant select univalent anion selective through film, cation-exchange membrane selects homogeneous phase cation exchange film, and than selecting monovalent cation, the selective better effects if through film is a little, selective compared with monovalent cation through film, the use of homogeneous phase cation exchange film can improve the removal efficiency of Ni and selective.
Table 2
Claims (4)
1. the selective reduction method of Ni content in papermaking-method reconstituted tobaccos extract, is characterized in that:
A, the diluting compartment of electrodialysis plant will be introduced according to the tobacco extraction liquid prepared by papermaking-method reconstituted tobaccos production technology, and in enriched chamber, add water or electrolyte; The anion-exchange membrane of described electrodialysis plant is that univalent anion is selective through film;
B, under constant current density condition, electrodialysis process is carried out to tobacco extraction liquid and remove Ni ion, namely carry out nickel removal process;
C, in nickel removal processing procedure, control nickel removal degree by the change of diluting compartment internal conductance rate or the actual content of Ni; To detect in diluting compartment nicotine content and organic acid total amount to investigate the selective of nickel removal process simultaneously;
D, by the tobacco extraction liquid after nickel removal according to papermaking-method reconstituted tobaccos production technology proceed process, for the processing of reconstituted tobacco.
2. the selective reduction method of Ni content in papermaking-method reconstituted tobaccos extract according to claim 1, is characterized in that: the solid content of described tobacco extraction liquid is 7-10%.
3. the selective reduction method of Ni content in papermaking-method reconstituted tobaccos extract according to claim 1, is characterized in that: the cation-exchange membrane of described electrodialysis plant is common homogeneous phase cation exchange film.
4. the selective reduction method of Ni content in papermaking-method reconstituted tobaccos extract according to claim 1, is characterized in that: the flow of electrodialysis process described in step b is 4-8L/min; Constant current density is 10-15mA/cm
2.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253929A (en) * | 1980-03-05 | 1981-03-03 | Philip Morris Incorporated | Method for denitration of tobacco employing electrodialysis |
| US4302308A (en) * | 1980-03-05 | 1981-11-24 | Philip Morris, Inc. | Method for electrolytic denitration of tobacco |
| CN101940354A (en) * | 2010-09-21 | 2011-01-12 | 川渝中烟工业公司 | Processing method of cigarette with low heavy metal Ni content |
| CN102406230A (en) * | 2011-07-05 | 2012-04-11 | 中国海诚工程科技股份有限公司 | Method for removing heavy metal ions from tobacco extract |
| CN103082394A (en) * | 2013-01-25 | 2013-05-08 | 安徽中烟工业有限责任公司 | Regulation and control method for paper-making method reproducing tobacco leaf extract liquor negative ion components |
| CN103330277A (en) * | 2013-07-02 | 2013-10-02 | 云南烟草科学研究院 | Method of controlling contents of nitrate and nitrite in tobacco reconstituted in papermaking method |
| CN103874432A (en) * | 2011-05-19 | 2014-06-18 | R·J·雷诺兹烟草公司 | Molecularly imprinted polymers for treating tobacco material and filtering smoke from smoking articles |
-
2015
- 2015-08-28 CN CN201510547747.3A patent/CN105124741B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4253929A (en) * | 1980-03-05 | 1981-03-03 | Philip Morris Incorporated | Method for denitration of tobacco employing electrodialysis |
| US4302308A (en) * | 1980-03-05 | 1981-11-24 | Philip Morris, Inc. | Method for electrolytic denitration of tobacco |
| CN101940354A (en) * | 2010-09-21 | 2011-01-12 | 川渝中烟工业公司 | Processing method of cigarette with low heavy metal Ni content |
| CN103874432A (en) * | 2011-05-19 | 2014-06-18 | R·J·雷诺兹烟草公司 | Molecularly imprinted polymers for treating tobacco material and filtering smoke from smoking articles |
| CN102406230A (en) * | 2011-07-05 | 2012-04-11 | 中国海诚工程科技股份有限公司 | Method for removing heavy metal ions from tobacco extract |
| CN103082394A (en) * | 2013-01-25 | 2013-05-08 | 安徽中烟工业有限责任公司 | Regulation and control method for paper-making method reproducing tobacco leaf extract liquor negative ion components |
| CN103330277A (en) * | 2013-07-02 | 2013-10-02 | 云南烟草科学研究院 | Method of controlling contents of nitrate and nitrite in tobacco reconstituted in papermaking method |
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