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Efficient resource utilization method for fallen leaves

A technology of recycling and defoliation, applied in the field of coking, can solve the problems of wasting resources, long time, polluting the environment, etc., and achieve the effects of high recovery efficiency and conversion rate, reducing coking costs, and reducing the amount of coking coal.

Pending Publication Date: 2022-03-22
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct burning of fallen leaves not only wastes resources, but also pollutes the environment
The incineration of fallen leaves for power generation cannot recover the organic matter in the leaves
The process of making fertilizer from fallen leaves is complicated, takes a long time, occupies a large area, and the heat of fallen leaves cannot be effectively used

Method used

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  • Efficient resource utilization method for fallen leaves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The collected fallen leaves are screened by a vibrating sieve, and the aperture of the vibrating screen is 20 mm; the screened fallen leaves are crushed by a jaw crusher, and the size is less than 20 mm; the crushed fallen leaves are mixed with other coking coal, and the fallen leaves are The proportion is 1% of the total weight; the mixture of fallen leaves and coking coal is pulverized by the original pulverizer in a coking plant; the pulverized mixture of fallen leaves and coking coal is put into a coke oven for coking.

[0023] During the coking process, the fallen leaves are transformed into coke that meets the needs of blast furnace production along with the coking coal, and coke oven gas with high calorific value and by-products such as tar and crude oil that can be used as chemical raw materials are produced, so that the organic matter and heat of fallen leaves can be fully recycled. A ton of coke can reduce the amount of coking coal by 1kg to 2kg. The calorific...

Embodiment 2

[0025] The collected fallen leaves are screened by a vibrating sieve, and the aperture of the vibrating screen is 40mm; the screened fallen leaves are crushed by a jaw crusher, and the size is less than 20mm; the crushed fallen leaves are mixed with other coking coal, and the fallen leaves are The proportion is 0.5% of the total weight; the mixture of fallen leaves and coking coal is pulverized by the original pulverizer in a coking plant; the pulverized mixture of fallen leaves and coking coal is put into a coke oven for coking.

[0026] During the coking process, the fallen leaves are transformed into coke that meets the needs of blast furnace production along with the coking coal, and coke oven gas with high calorific value and by-products such as tar and crude oil that can be used as chemical raw materials are produced, so that the organic matter and heat of fallen leaves can be fully recycled. A ton of coke can reduce the amount of coking coal by 0.5kg to 1kg.

Embodiment 3

[0028] The collected fallen leaves are screened by vibrating sieve, and the aperture of the vibrating screen is 50 mm; the screened fallen leaves are crushed by jaw crusher, and the size is less than 20 mm; the crushed fallen leaves are mixed with other coking coal, and the fallen leaves are The proportioning ratio is 0.2% of the total weight; the mixture of fallen leaves and coking coal is pulverized by an original pulverizer in a coking plant; the pulverized mixture of fallen leaves and coking coal is put into a coke oven for coking.

[0029] During the coking process, the fallen leaves are converted together with the coking coal into coke that meets the needs of blast furnace production, and coke oven gas with high calorific value and by-products such as tar and crude oil that can be used as chemical raw materials are produced, so that the organic matter and heat of fallen leaves can be fully recycled. A ton of coke can reduce the amount of coking coal by 0.2kg to 0.5kg.

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Abstract

The invention belongs to the technical field of coking, and particularly relates to a method for efficient resource utilization of fallen leaves, fallen leaves are screened and crushed and then enter a coking process with a coking raw material, existing coking technical equipment is utilized, fallen leaf heat and organic matter recovery can be achieved at the same time, and compared with the prior art, the method is high in recovery efficiency and conversion rate and low in cost. The resource utilization maximization is realized, and the method is more environment-friendly. Meanwhile, the fallen leaves can replace part of coking coal after being coked, the effect of reducing the consumption of the coking coal is achieved, and the coking cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of coking, and in particular relates to a method for efficient resource utilization of fallen leaves. Background technique [0002] Fallen leaves are a kind of biomass material, which is rich in organic components and inorganic mineral components. After collection, the treatment methods include direct incineration, incineration for power generation, and decay as fertilizer. Direct burning of fallen leaves not only wastes resources, but also pollutes the environment. The incineration of fallen leaves for power generation cannot recover the organic matter in the leaves. The process of making fertilizer from decomposed fallen leaves is complicated, takes a long time, occupies a large area, and the heat of fallen leaves cannot be effectively used. [0003] Therefore, it is necessary to develop a high-efficiency resource utilization method of fallen leaves, which can realize heat utilization and organic matter ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C10B57/04C10B57/00
CPCC10B53/02C10B57/04C10B57/00Y02E50/10
Inventor 李建云刘智伟耿斐董晓春江丹
Owner SHANDONG IRON & STEEL CO LTD
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