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Resource utilization method of biomass waste

A biomass and treatment method technology, applied in the direction of combustion methods, incinerators, combustion types, etc., can solve the problems of lack of treatment methods for waste residue, increase investment, add equipment, etc.

Inactive Publication Date: 2011-05-04
YONGZHOU XIANGJIANG PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using these direct combustion and solidification molding technologies to utilize biomass waste residues in the papermaking process requires additional equipment and increased investment. It is difficult to directly use waste residues with high water content such as sludge, and there is also a lack of waste residues generated in the waste paper pulping process. effective treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: Wooden sawdust produced in the papermaking pulp preparation process, wooden sawdust and raw coal are matched according to the ratio of 30% of dry basis weight, uniformly mixed in the coal shed and enter through raw coal crusher, coal transport belt, coal feeder The boiler burns.

Embodiment 2

[0019] Embodiment 2: Wooden sawdust produced in the papermaking pulp preparation process, wooden sawdust and raw coal are matched according to the ratio of 15% on a dry basis, uniformly mixed in the coal shed, and enter through a raw coal crusher, a coal transport belt, and a coal feeder The boiler burns.

Embodiment 3

[0020] Embodiment 3: After the bark and waste plastics are pulverized by a pulverizer, they are sent to a boiler for combustion through a special belt and a feeder through a separate feeding port. At the same time, raw coal is added to the furnace from the boiler coal feeding system, and the ratio of biomass and raw coal is 25% by dry weight.

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PUM

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Abstract

The invention relates to a resource utilization method of biomass waste residues. The method comprises the following steps: biomass waste residues such as bark, wood sawdust, papermaking sludge and waste plastics are mixed with raw coal, the mixture is sent into a circulation fluidized bed coal firing boiler for burning, wherein the weight content of biomass to raw coal dry basis is no more than 30%; wood sawdust with the particle size which is no more than 15mm is directly mixed with raw coal to be sent into the circulation fluidized bed boiler for burning; bark or waste plastics are grinded to particles or plate-shaped particles, the obtained particles are sent into the circulation fluidized bed boiler through an independent conveyer to be mixed with raw coal; and the dewatered papermaking sludge of which water content is less than 80%, is mixed with raw coal and then the mixture is sent into the circulation fluidized bed boiler for burning.

Description

technical field [0001] The invention relates to a method for utilizing biomass waste residue, in particular to a method for utilizing papermaking biomass waste residue. Background technique [0002] Solid biomass waste residues such as bark and saw dust are produced in the process of pulping and pulping, with a calorific value of 3000-4000kcal / kg and a moisture content of 30-75%. Under the action of lignin, the lignin is precipitated in the form of sludge, which also contains unused short fibers and other impurities. The calorific value is 2000-3000kcal / kg, but after pressing and dehydrating, the moisture content is as high as 70%. It cannot be burned directly. During the pulping process of waste paper, waste plastic waste, fine fibers, deinking sludge and other organic biomass waste residues are produced. Some waste residues have a high moisture content of 65-80%, high bacterial content and harmful substance content, and a large difference in calorific value. big. In the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23G5/30F23G5/033F23G7/12F23G7/00
Inventor 李正国赵凌泉胡先知何文平周军唐晓宏黄伟苏小卫李春保
Owner YONGZHOU XIANGJIANG PAPER CO LTD
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