Lignite molding production method

A production method and technology for lignite, applied in the field of lignite processing and utilization, can solve the problems of high investment and production cost, difficult to popularize and use, weak lignite cohesion, etc. low cost effect

Inactive Publication Date: 2015-03-18
蔡京鹏
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Problems solved by technology

In order to improve the utilization value and scope of lignite, lignite enterprises at home and abroad are keen to develop lignite drying and molding technology, and have also developed various binders, but the effect is not good. After forming, the lignite particles will absorb the moisture in the air and expand, and the briquettes will disperse in a short time without forming and cannot be used.
Some countries have developed thermoforming technology, but the equipment investment and production costs are very high, and the environmental pollution is large, so it is difficult to popularize and apply

Method used

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Embodiment Construction

[0015] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] Such as figure 1 The production method of a kind of lignite molding shown is characterized in that: the concrete implementation of this production method is as follows:

[0017] ① Dry and pyrolyze the lignite raw coal, and the products after pyrolysis include gas, coal tar and lignite semi-coke;

[0018] ② Collect the gas obtained from pyrolysis and reuse it as fuel for raw coal drying and pyrolysis;

[0019] ③Collect the coal tar obtained by pyrolysis, and use part of it as the raw material of the water-blocking adhesive, and the remaining par...

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Abstract

A production method for lignite forming, comprising: drying and pyrolyzing lignite, wherein after the pyrolysis, coal gas is used as a fuel for the drying and pyrolysis of raw coal, and coal tar is collected and partly used as a raw material of a waterproof binder; crushing the lignite semi-coke into semi-coke particles and uniformly mixing with the waterproof binder proportionately, and then subjecting same to mechanical forming. The waterproof binder is formulated following the steps below: a polymer cellulose and water are mixed under stirring until the polymer cellulose is completely dissolved, and then coal tar is added and stirred until uniform. Each product produced by the pyrolysis of lignite has been fully utilized, and is economical. The main raw material of the waterproof binder has extensive sources, low costs, is environmentally friendly, low environmental pollution, and a good waterproof effect. The forming technology using cold pressing has a small equipment investment and low production cost, and can be used in large-scale production. The resulting briquette coal or formed coke has a substantially increased unit calorific value compared to raw coal, and a greatly improved utilization value and space.

Description

technical field [0001] The invention relates to the field of processing and utilization of lignite, in particular to a method for producing molded coal or molded coke from lignite by adopting cold-press molding technology. Background technique [0002] Lignite is a low-metamorphic coal with low calorific value per unit, well-developed pores, high moisture content, high volatile content, and low cold and hot strength. In order to improve the utilization value and scope of lignite, lignite enterprises at home and abroad are keen to develop lignite drying and molding technology, and have also developed various binders, but the effect is not good. After forming, the lignite particles will absorb the moisture in the air and expand, and the briquettes will disperse in a short time without forming and cannot be used. Some countries have developed thermoforming technology, but the equipment investment and production costs are very high, and the environmental pollution is great, so ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/00C10L9/08C10L5/16
CPCC10L9/00C10L9/08C10L5/16C10L5/04C10L5/14C10L5/361C10L2290/02C10L2290/08C10L2290/146C10L2290/28C10L2290/30
Inventor 蔡京鹏
Owner 蔡京鹏
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