Production method for reproducing colloidal particles of cellulose diacetate by using cellulose diacetate waste shred

A technology of cellulose diacetate and production method, applied in the field of chemical fiber waste silk recycling, can solve problems such as no relevant reports

Active Publication Date: 2009-10-28
HENAN ZHENGTONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the treatment and reuse techn

Method used

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Examples

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Embodiment Construction

[0012] For a better description of the present invention, examples are as follows:

[0013] Add 700Kg of acetone to a 1500L dissolving kettle, and slowly add 300Kg of cigarette waste cellulose diacetate (containing 5%-6% water) under stirring, heat to 50°C for dissolution, and add 200g of lipase after confirming complete dissolution (Novozym435 lipase), or immobilize the lipase, add 20Kg of deionized water, keep at 50°C and carry out hydrolysis under stirring for about 15-18 hours, determine the end point of the reaction by measuring the acid value, and then filter with a filter to remove the paper Crumbs and impurities are then granulated by a screw extruder, and the acetone is blown away by hot air at the exit of the extruder for recycling. The granules are dropped into 50°C water for washing to remove glycerin, acetic acid and other substances, and then dried The machine removes water and excess acetone at 110°C, and finally produces cellulose diacetate (Cellulose Diacetate...

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PUM

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Abstract

The invention discloses a production method for reproducing the colloidal particles of cellulose diacetate by using cellulose diacetate shred for tobacco, pertaining to the field of waste shred chemical fiber reutilization technology. The method includes the following steps: the waste shred of the cellulose diacetate for tobacco is dissolved in an acetone solvent and then an enzyme preparation and deionized water are added; additives adhered on the waste shred are hydrolyzed by means of biocatalysis at temperature of 30-55 DEG C to generate glycerin and an acetic acid; and after steps including filtration, granulation, water rinse, drying and the like, the granular cellulose diacetate is prepared. The colloidal particles of the processed cellulose diacetate can be reutilized by acetate fiber enterprises to change waste into valuable, thereby improving economic benefit, saving cost and having relatively good application prospect.

Description

technical field [0001] The invention relates to a method for regenerating waste cellulose diacetate (Cellulose Diacetate), in particular to a production method for regenerating waste cellulose diacetate (Cellulose Diacetate) for cigarettes into cellulose diacetate (Cellulose Diacetate) colloids. The invention belongs to the technical field of recycling waste silk of chemical fibers. Background technique [0002] The annual consumption of cellulose diacetate for cigarettes in my country is more than 220,000 tons, and nearly 4,000-6,000 tons of waste silk is produced in the process of manufacturing filter rods. Due to the addition of some additives during the rod making process, the waste silk contains triacetin, mineral oil, oil agent and other components, and it is also mixed with rod paper, which is not easy to return to the acetate fiber enterprise for reuse. In order to prevent its monopoly products from flowing into black smoke factories, the State Tobacco Administratio...

Claims

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Application Information

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IPC IPC(8): C08B3/06C08J3/12
Inventor 楚军政王青
Owner HENAN ZHENGTONG CHEM
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