Novel papermaking method reconstituted tobacco pulp washing process

Abstract

A novel papermaking method reconstituted tobacco pulp washing process includes the following steps of firstly, extracting raw materials; secondly, conducting squeeze-drying through a squeeze-drying machine, and storing the materials in an extraction liquid tank; thirdly, sending squeeze-dried materials into a before-knocking pool so that concentration can be diluted; fourthly, conducting low-concentration pulping work through a low-concentration pulping machine; fifthly, conducting solid-liquid separating through a horizontal spiral centrifugal machine; sixthly, collecting centrifuged pulp washing liquid in a buffer tank, and collecting centrifuged solid materials in an after-knocking pool. The pulp washing degree is improved, the pulp dryness degree is improved, the content of parenchyma cells, sugar and other substances in pulp is reduced, the pulp quality is good, and a paper machine can be easily accelerated. The water recycling period of a pulping system is prolonged, production water consumption is reduced, and production cost is reduced. Pulp washing liquid is comprehensively used, the raw material soluble matter extraction rate is increased, and product yield is increased. Pulp washing procedures are reasonably set, the horizontal spiral centrifugal machine is large in processing capacity, the pulp washing efficiency can be improved, device running reliability is high, and production running is stable.

Description

technical field [0001] The invention belongs to the technical field of tobacco production, and in particular relates to a pulp washing process of reconstituted tobacco leaves by a novel papermaking method. Background technique [0002] The papermaking method of reconstituted tobacco leaves uses tobacco stems, tobacco powder and chips as the main raw materials. After the tobacco raw materials are leached with water, the materials are separated from solid and liquid, and the leaching liquid is concentrated into extracts. Insolubles such as tobacco fibers are borrowed from papermaking equipment and technology. After beating, it is made into a base sheet by a paper machine, and the extract is prepared and then coated on the base sheet. After drying, it is the reconstituted tobacco leaf by the papermaking method. [0003] The raw materials of reconstituted tobacco leaves by papermaking method are not boiled with alkali, and the pulp is all mechanical pulp. The soluble components...

AI Technical Summary

Problems solved by technology

And in order to ensure the smoking quality of reconstituted tobacco leaves, the scope of use of preservatives is very small, so the pulp after low-consistency pulping must be washed

[0004] Vacuum pulp washer is generally used in the pulp washing process of the papermaking industry, and its main defects in the production of reconstituted tobacco leaves by the papermaking method are: 1. The open design escapes a large amount of steam, and the working environment is high temperature and high humidity; 2. The dryness of the pulp after treatment Low, generally 8-10%; 3. The concentration of fine fibers in the recovered liquid is high, generally 0.2-0.3%; 4. The slurry is easy to stick to the net, reducing work efficiency

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