Treatment method of backflow coating liquid of paper-making-process reconstituted tobacco

Abstract

The invention provides a treatment method of backflow coating liquid of paper-making-process reconstituted tobacco, and belongs to the technical field of paper-making-process reconstituted tobacco. According to the method, chitosan, Arabic gum, sodium alginate, glucolactone and other substances are added into the backflow coating liquid, net-structure macromolecular complexes formed by intermolecular forces among the substances such as the chitosan interact with calcium ion, calcium carbonate and fiber fines in the backflow coating liquid, interactions such as electrostatic interaction and gelation are generated, by the adoption of the generated interactions, the calcium ion, the calcium carbonate, the fiber fines and other substances in the backflow coating liquid can be effectively reduced, the purification treatment effect is significant, the viscosity and solid content of the backflow coating liquid are removed, the treated backflow coating liquid can be directly reused, and the treatment method of the backflow coating liquid has wide market prospects and relatively high application value.

Description

technical field [0001] The invention relates to a method for treating reconstituted tobacco leaves by a papermaking method and belongs to the technical field of reconstituted tobacco leaves by a papermaking method. Background technique [0002] The production of reconstituted tobacco leaves by the papermaking method is to add tobacco raw materials to hot water for a period of time and then separate the solid from the liquid. The tobacco solids are beaten and copied to form a reconstituted tobacco leaf base sheet. The liquid is concentrated and added with flavors and fragrances to prepare a reconstituted tobacco leaf coating solution. Coating the coating solution on the base sheet, drying and slicing to obtain the finished reconstituted tobacco leaf. During the coating process, the reconstituted tobacco leaf substrate is dip-coated from the coating liquid between the coating rollers and then enters the oven for drying. Part of the coating liquid is coated on the film base, an...

AI Technical Summary

Problems solved by technology

During the coating process, the reconstituted tobacco leaf substrate is dip-coated from the coating liquid between the coating rollers and then enters the oven for drying. Part of the coating liquid is coated on the film base, and part of the coating liquid is sprayed from the overflow port of the coating machine and the coating machine. The gap between the cloth rollers flows out, and this part of the liquid is called the backflow coating solution. The backflow coating solution is generally added to the fresh coating solution through pipelines for reuse, but in continuous production, the fine fibers on the reconstituted tobacco leaf substrate , calcium carbonate, and finely ground tobacco substances will be continuously enriched in the reflow coating solution, resulting in a continuous increase in solid content and viscosity, affecting product quality and the stability of the coating rate, and part of the calcium carbonate will react in the acidic coating solution , exists in the coating solution in the form of ions. Currently, the production line is processed through filters or vibrating screens, but simple physical methods can only remove some of the larger solid particles, which cannot achieve good purification treatment. When the reflow coating When the liquid solid content and viscosity of the cloth reach a certain level, when it cannot be coated normally, it can only be treated by discharging, resulting in a waste of resources and an increase in cost, and at the same time brings great pressure on sewage treatment