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Upgrading process for coal briquette comprising biomass and low-grade coal

A low-rank coal and biomass technology, which is applied in the fields of biofuel, petroleum industry, and the manufacture of combustible gas, can solve the problems of large-scale development and utilization of biomass resources, overcapacity, and low utilization of tamping coke ovens. Achieve the effect of not easy to pulverize, easy to push coke, and improve quality

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 Upgrading process of stamping furnace using briquettes including biomass and low-rank coal as raw materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Pulverize the dried sludge and mix it with sub-bituminous coal to form a low-rank coal raw material for future use, wherein the mass ratio of lignite to straw is 9:1;

[0030] (2) Use tamping equipment to tamp the mixture of pulverized coking coal and 1 / 3 coking coal to form a non-low-rank coal-type coal seam; and continue to add the low-rank coal raw material on the non-low-rank coal-type coal seam to continue using The tamping equipment tamps the low-rank coal raw material to form a low-rank coal-shaped coal seam above the non-low-rank coal-shaped coal seam, thereby forming the final coal-shaped raw material; wherein, in terms of mass, the present embodiment The mass ratio of the low-rank coal raw material used in the method to the mixed coal formed by the coking coal and 1 / 3 coking coal is 10:1;

[0031] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 950°C, and upgrade the time for 24 hours, collect the ...

Embodiment 2

[0034] (1) mixing stalks and lignite to form low-rank coal raw materials for subsequent use, wherein the mass ratio of lignite, stalks and garbage is 85:15;

[0035] (2) Use tamping equipment to tamp the mixed coal formed by crushed coking coal and 1 / 3 coking coal to form a non-low-rank coal-type coal seam; and continue to add the low-rank coal raw material on the non-low-rank coal-type coal seam Continue to use tamping equipment to tamp and shape the low-rank coal raw material to form a low-rank coal-shaped coal seam above the non-low-rank coal-shaped coal seam, thereby forming the final coal-shaped raw material; wherein, in terms of mass, this The mass ratio of the low-rank coal raw material used in the embodiment to the mixed coal formed by the coking coal and 1 / 3 coking coal is 7:3;

[0036] (3) Push the briquette raw material into the coke oven for upgrading, control the upgrading temperature to 1100°C, and the upgrading time is 20 hours, collect the overflowing mixture of ...

Embodiment 3

[0039] (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;

[0040] (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;

[0041] (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;

[0042] (4) Push the briquette raw materials into the coke oven for upgrading, control the upgrading temperature at 1300°C, and upgrade...

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Abstract

The invention discloses an upgrading process for a coal briquette comprising biomass and low-grade coal. The upgrading process includes the steps of: moulding a low-grade coal briquette raw material containing biomass; and upgrading 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 from 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 40-90% by mass of the low-grade coal briquette layer. The upgrading 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 quality upgrading process, in particular to a quality upgrading process using 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 t...

Claims

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Application Information

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IPC IPC(8): C10B53/08C10B57/04C10B53/02C10B57/00C10J3/60
CPCY02E50/10
Inventor 林科杜明来
Owner BEIJING SJ ENVIRONMENTAL PROTECTION & NEW MATERIAL CO LTD
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