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A coking process for briquettes comprising biomass and low-rank coal

A low-rank coal and biomass technology, applied in the field of coking technology, can solve the problems of low utilization of tamping coke ovens, inability to realize large-scale development and utilization of biomass resources, and overcapacity, so as to achieve easy coke pushing and difficult pulverization , the effect of increasing production

Active Publication Date: 2019-02-15
BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that biomass resources such as low-rank coal and straw cannot be developed and utilized on a large scale in the prior art, and the problems of overcapacity in the existing coking industry and low utilization of tamping coke ovens, it provides a method that utilizes the existing Stamping furnace coking process using briquettes including biomass and low-rank coal as raw material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Straw is pulverized and mixed with lignite to form a low-rank coal raw material for subsequent use, wherein the mass ratio of lignite to stalk is 1:4;

[0030] (2) Use tamping equipment to tamp the pulverized coking coal to form a non-low-rank coal-type coal seam; The rank coal raw material is tamped and formed to form a low rank coal seam above the non-low rank coal seam, thereby forming the final coal shaped raw material; wherein, in terms of mass, the low rank coal used in this embodiment The mass ratio of coal raw material to the coking coal is 10:1;

[0031] (3) Push the briquette raw materials into the coke oven for coking, control the coking temperature to 1200°C, and coking time for 16 hours, collect the overflowing mixture of crude gas, tar and crude benzene, and obtain coke as a by-product;

[0032] Adopt conventional process to separate crude gas and tar, and further separate crude benzene from tar, the amount of said crude gas obtained is 960Nm 3 / t dr...

Embodiment 2

[0034](1) Sorting domestic waste, removing non-combustible components such as glass and metal, and retaining combustible components such as bark, leaves, waste paper, fabrics, etc., for future use;

[0035] (2) pulverize stalks and standby domestic waste and mix them with lignite to form low-rank coal raw materials for subsequent use, wherein the mass ratio of lignite, stalks and garbage is 3:6:1;

[0036] (3) Use tamping equipment to tamp the pulverized coking coal to form a non-low-rank coal-type coal seam; The rank coal raw material is tamped and formed to form a low rank coal seam above the non-low rank coal seam, thereby forming the final coal shaped raw material; wherein, in terms of mass, the low rank coal used in this embodiment The mass ratio of coal raw material to the coking coal is 7:3;

[0037] (4) Push the briquette raw material into the coke oven for coking, control the coking temperature to 1400°C, and coking time for 17 hours, collect the overflowing mixture ...

Embodiment 3

[0040] (1) Sorting domestic waste, removing non-combustible components such as glass and metal, and retaining combustible components such as bark, leaves, waste paper, fabrics, etc., for future use;

[0041] (2) Crush the straw, spare domestic garbage, and dried sludge and mix them with sub-bituminous coal to form low-rank coal raw materials for future use. The mass ratio of sub-bituminous coal, straw, garbage and dried sludge is 4:3 :1:2;

[0042] (3) Use tamping equipment to tamp the pulverized coking coal to form a non-low-rank coal-type coal seam; The rank coal raw material is tamped and formed to form a low rank coal seam above the non-low rank coal seam, thereby forming the final coal shaped raw material; wherein, in terms of mass, the low rank coal used in this embodiment The mass ratio of coal raw material to the coking coal is 8:3;

[0043] (4) Push the briquette raw material into the coke oven for coking, control the coking temperature to 1300°C, and coking time fo...

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Abstract

The invention discloses a coking process for a coal briquette comprising biomass and low-grade coal. The coking process includes the steps of: moulding a low-grade coal briquette raw material containing biomass; and coking the low-grade coal briquette raw material, wherein the coal briquette comprising the biomass and low-grade coal includes a non-low-grade coal briquette layer formed from one or more of medium-grade coal, high-grade coal or mid-high-grade goal, and a low-grade coal briquette layer which is arranged on the non-low-grade coal briquette layer and includes low-grade coal and biomass. The coking process solves the problems of low utilization rate of a tamping coke oven in the prior art and excessive productivity in the coking industry, and solves a problems of limited application of the low-grade coal since no large-scale industrial device is provided. The utilization rate of biomass resources, such as straw and agricultural and forestry wastes, is improved. The invention develops a novel sludge treatment method and solves the influence on surrounding environment due to garbage leachate generated from sludge sanitary landfill.

Description

technical field [0001] The invention relates to a coking process, in particular to a coking process utilizing an existing tamping furnace to use briquettes including biomass and low-rank coal as raw materials, and belongs to the technical field of coal conversion. Background technique [0002] According to different structures and compositions, coal is divided into three categories: lignite, bituminous coal and anthracite. Bituminous coal is further divided into low-metamorphic bituminous coal and medium-metamorphic bituminous coal. Low-metamorphic bituminous coal is also called sub-bituminous coal, which is collectively referred to as "low-rank coal" together with lignite. Low-rank coal is the product of the initial stage of coalification. It has the characteristics of low carbon content, high moisture, easy pulverization, easy spontaneous combustion, high volatile content, poor water immersion strength, and poor drop strength. These characteristics limit the direct use of l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B53/02C10B53/08C10B57/06
CPCY02E50/10
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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