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Coal briquette comprising biomass and low-grade coal

A low-rank coal and biomass technology, applied in the petroleum industry, coke ovens, etc., can solve the problems of overcapacity, low utilization of stamped coke ovens, and the inability to realize large-scale development and utilization of biomass resources, and achieve easy coke pushing , the effect of increasing production

Active Publication Date: 2016-07-06
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 Coal briquette raw material for the purpose of increasing oil and gas production during coking in tamping furnace

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (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;

[0027] (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;

[0028] (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;

[0029] 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

[0031] (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;

[0032] (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;

[0033] (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;

[0034](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

[0037] (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;

[0038] (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;

[0039] (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;

[0040] (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 coal briquette comprising biomass and low-grade coal, wherein the coal briquette comprises 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 addition amount of the low-grade coal is 20-90% by mass of the low-grade coal briquette layer. The coal briquette is coked or is upgraded through a tamping coke oven in the prior art. The method solves the problems of low utilization rate of the 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 coal raw material suitable for stamping coke ovens, in particular to a molded coal mainly composed of biomass and low-rank coal, 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 low-rank coal. Development and u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B57/06
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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