Recycle method of acetate fiber in waste acetate fiber tow filter rod leftovers

A technology of fiber tow and acetate fiber, which is applied in the field of separation of acetate fiber and paper, can solve the problems of environmental pollution and waste of resources, and achieve the effects of wide application, low production cost and short process
CN101717524AInactive Publication Date: 2010-06-02HEFEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI UNIV OF TECH
Publication Date
2010-06-02
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses a recycle method of acetate fiber in waste acetate fiber tow filter rod leftovers. The method is characterized by comprising the following steps: firstly, soaking the waste acetate fiber tow filter rod leftovers in an ester-removing solvent; removing and recycling the ester-removing solvent in a filtration or centrifugalization mode to obtain a material to be processed; then, adding acetone, N, N-dimethylformamide DMF, acetic acid, acetonitrile, or dimethyl sulfoxide DMSO as melting solvents to the material to be processed to obtain an emulsion; removing undissolved paper and rubber impurities in the emulsion in the filtration or centrifugalization mode; and steaming and recycling the solvent at normal pressure or reduced pressure to solid high-purity cellulose diacetate. The invention has simple and practical production process, environmental protection, no emission, short flows, low cost, high yield and good product quality.
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Description

technical field

[0001] The invention relates to a method for separating acetate fiber from paper in the leftovers of waste acetate tow nozzles and sticks Background technique

[0002] In the production process of 1-3 types of cigarettes, there will be a large amount of waste acetate tow leftovers. Some cigarette manufacturers adopt the disposal method of burning and burying, but this method will bring serious environmental pollution.

[0003] The molecular formula of cellulose acetate is [C 6 h 7 o 2 (OCOCH 3 )x(OH) 3-x ] n , n=200~400, when x=2.28~2.49, be diacetate cellulose when being equivalent to acetic acid content 53%~56%, be called for short diacetate sheet, the acetyl group content of diacetate sheet is 38%~40%. Second vinegar sheet has many excellent properties such as weather resistance, impact resistance, oil resistance, no static electricity, and good secondary processability. Diacetate fiber tow is widely used in the tobacco industry because it has the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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