A method for removing nitrate from paper-making reconstituted tobacco leaves

Abstract

The present invention disclose a method of refining the tobacco leaf to remove nitrate. It is to use the anion exchange resin to treat tobacco extract and remove the nitrate root ions.The process is: 0.05 ~ 0.20 times the concentration (solid content) of 4%to 10%of the tobacco extract at normal temperature (solid content) of 4%to 10%of the ion exchange resin, stir for 5 ~ 7 minutes, filter with sieves above 100 meters, and then use it with then use it.0.3 ~ 0.5 times the water washing the resin, the liquid part is combined with the degraded tobacco extract, and then the appropriate amount of homemade composite organic acid is added to the pH value of its pH to 4.6 ~ 4.8, and it can be directly transported to the refined concentrated section.The invention effectively reduces the nitrate root ion content in the tobacco extraction solution while ensuring the high rate of high gains of the product. The use of the anion exchanges the resin used in the correct method can be recycled and reused after the activation.The sensory quality of tobacco extract has not changed significantly.

Description

technical field [0001] The present invention relates to a process for removing nitrate ions from tobacco extract by papermaking method, which realizes the adjustable and controllable chemical components of reconstituted tobacco leaves by papermaking method, and specifically uses anion exchange resin to treat tobacco extract to remove nitrate ions. Nitrate ion, the resin can be recycled after recovery, activation and regeneration. The invention belongs to the technical field of reconstituted tobacco leaf production in the tobacco industry. Background technique [0002] Reconstituted tobacco leaf is a homogenized tobacco sheet, which is mainly composed of tobacco raw materials or low-grade tobacco leaves that are not suitable for cigarette processing, adding adhesives and other additives. Reconstituted tobacco has become a very important raw material for cigarettes due to its advantages of low cost, good filling ability and the ability to reduce tar content in smoke, and the ...

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Problems solved by technology

[0004] The Chinese invention patent "A Method for Controlling Chlorine and Nitrate Content in Tobacco Extraction or Extract" (application number: 200810219773.3) discloses the extraction or extraction of tobacco raw materials in the production of reconstituted tobacco leaves by papermaking method, and controls its concentration to reach 1-30%, the solvent is water or an alcohol solution with a concentration lower than 30%, and then put it into a nanofiltration membrane circulation device for circulation filtration to obtain the retained liquid intercepted by the nanofiltration membrane after removing chlorine and nitrate. The liquid is used as the material coated and backfilled on the base sheet in the production of reconstituted tobacco leaves by papermaking method. Its disadvantages are: (1) the original active ingredients of the membrane-filtered tobacco will be lost, which is not conducive to the intrinsic quality of the sheet product; (2) It is easy to form an adhesion layer on the surface, which significantly reduces the flux of the membrane; (3) After the operation, the cleaning of the membrane is difficult and the durability of the membrane is poor

(4) The initial investment is too high, and the later maintenance costs are relatively high, making it impossible to achieve large-scale industrialization

[0005] The Chinese invention patent "A Reconstituted Tobacco Leaf Coating Liquid Component and Component Group Chemical Kitchen Combination, Coupling Preparation and Process" (Application No.: 201210008209.3) discloses the use of low-grade and waste tobacco leaves and stems, after pre-soaking , enzymatic extraction or extraction to obtain tobacco leaves or tobacco stems enzymatic extraction or extraction liquid or tobacco leaves, tobacco stems mixed extraction or extraction liquid, and then undergo enzymatic hydrolysis of chemical components and component groups in the chemical kitchen, Mera De reaction conversion, membrane separation or concentration or column separation, freeze separation, alcohol precipitation and other combined and coupled preparation processes to selectively transform or reduce or remove tobacco leaves, tobacco stem extraction or extraction liquid or tobacco leaves, tobacco stem extraction or The disadvantages of extracting certain components and component groups in the mixed solution are: (1) Adding a large amount of industrial additives to the coating solution is not conducive to the intrinsic quality of the thin film product; (2) The leaching liquid film concentration treatment The amount of water is relatively small, but the water flux of membrane treatment is large, and the membrane treatment needs to be supplemented with concentration treatment, which will cause a lot of waste of water resources. (3) The process is complicated and the cost is high, and large-scale application cannot be realized

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