Method for recycling waste cigarette filter sticks

Abstract

The invention discloses a method for recycling waste cigarette filter sticks. The method comprises the following 11 steps of screening and feeding, strip cutting, soaking in hot water, extruding and rubbing for dehydration, centrifugal paper removal, negative pressure paper removal, hot air drying, winnowing for impurity removal, dissolving and filtering for impurity removal, spinning solution preparation and tow preparation. According to the method, foreign matters and bad smell in the waste filter sticks are effectively removed, and meanwhile, 1) foreign matters such as iron filings, stones and the like caused by insufficient attention of production enterprises on the storage environment of the waste filter sticks are effectively removed; 2) material impurities brought by the special filter sticks, such as threads, gel, blasting beads, particles, flavors, fragrances and the like are effectively removed; and 3) raw material impurities brought by filter stick production, such as forming paper, lap adhesive, center line adhesive, plasticizer, oil and the like are effectively removed; the removal rate of inclusions in three kinds of waste filter sticks which influence recycling and respinning application can reach 99.9%, and the industrial technical problems of recycling, impurity removal and respinning application of the waste filter sticks are effectively solved. The material characteristics are effectively combined, process linkage is systematically optimized, stage treatment and precise machining are achieved, and the industrial production process and method which are easy to operate, feasible and applicable are provided.

Description

technical field [0001] The invention belongs to the technical field of novel cigarette preparation, and in particular relates to a method for recovering discarded filter rods of cigarettes. Background technique [0002] Discarded filter rods are mainly produced during the production process of filter rods and their experiments on the machine. There are many types of discarded filter rods, including ordinary rods and various special filter rods. The forms of discarded filter rods are mainly unqualified filter rods and uncut waste strips. The industry consumes about 350,000 tons of cellulose diacetate tow every year, and about 7,000 tons of discarded filter rods are generated based on 2% rod-forming loss. At present, the disposal methods of discarded filter rods are mainly entrusted incineration or landfill, resulting in huge energy consumption and environmental pollution. [0003] The recycling and reuse of discarded filter rods is in line with the national development ori...

AI Technical Summary

Problems solved by technology

The key of this method is to remove the paper by dissolving and filtering, and its efficiency is low due to the high viscosity and many impurities after dissolving

At the same time, due to the lack of systematic consideration of the removal of other impurities, the feasibility and operability of industrial applications are insufficient

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