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Method of produing carbonized coal and apparatus

A technology of carbonization and briquette, applied in the field of coal molding products, can solve the problems of easy softening structure of briquette, low strength of briquette, high crushing rate, and achieve the effects of easy transportation and storage, good combustion effect, and improved effective utilization.

Inactive Publication Date: 2004-03-17
徐建生 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor cohesive force and no hydraulicity of this type of binder, the briquettes made with it have low strength and a high breakage rate during transportation and use, especially when wet, the briquettes are easy to soften complete destruction of its structure

Method used

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  • Method of produing carbonized coal and apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 The furnace body 2 of the present invention is 5.4 meters high, the inner diameter of the furnace bottom is 1.68 meters, and the inner diameter of the furnace top is 1.08 meters. The furnace body 2 includes three structural layers, wherein the inner furnace body is made of refractory bricks. The outer furnace body is made of ordinary building bricks. The middle is lined with vermiculite insulation. A cone 8 with a height of 1.5 is built in the lower part of the furnace body, the cone inclination angle is 55°, the cone surface is a concave surface and the lower part shrinks towards the outlet. The outer layer is a smooth surface of refractory cement. There are two discharge ports 9 at the bottom of the cone, and an openable and closable discharge door is installed on the outside of the discharge port. . When the discharge door is opened, the spherical briquette in the furnace automatically rolls down to the finished product box at the bottom. At 3.0 meters...

Embodiment 2

[0022] Example 2 The structure and size of the furnace body in this example are the same as those in Example 1. The support body at the lower part of the furnace body is a concave unilateral inclined surface with an inclination angle of 65°. There is a discharge port at the bottom of the concave surface. The lower part of the concave surface shrinks toward the outlet. The heat recovery device is a spiral tube.

Embodiment 3

[0023]Example 3 (tea furnace briquette): 70 parts of lean coal, particle size less than 3mm, 14% volatile matter and 15% ash content; 24 parts of fat slime, moisture content below 5%, 30% volatile matter and 20% ash content; The binder is 4 parts of bentonite, crushed to a particle size of less than 100 mesh, and 2 parts of quicklime, with a particle size of less than 100 mesh. Mix the above raw materials, add 8-10 parts of water, stir evenly, and shape with a pair of stick forming machine. The above-mentioned briquette is put into the furnace of Example 1, and the circular filler is used as a substitute below the annular tube of the furnace body. Ignite, gradually feed, form a coal-fired layer (ie heating layer) with a height of 1 meter and a temperature of about 600 ° C, open the lower furnace door, the circular packing is gradually released, and the upper briquette slowly descends. When the briquette descends to the annular tube At this time, it will enter the hot stewing ...

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Abstract

The charred briquette contains coal and adhesive component and is a two-layered structure with semi-coke structure outer layer. It is produced through fast charring in charring oven at 375-600 deg.cfor 30-40 min. The charring oven for producing the charred briquette includes vertical oven body with material feeding port and discharge port and support under the oven body. Inside the oven, there are preheating layer, heating layer and calcinations layer. The charred briquette has relatively high hardness and may be burnt completely and cleanly without producing black smoke.

Description

technical field [0001] The present invention relates to a coal shaped product, its production method and special production equipment. Background technique [0002] Coal briquette is a kind of fuel that improves the utilization value of coal by changing its structure and combustion method by using inferior coal such as last coal, medium coal or peat. But the combustion of the existing cold-pressed briquette, like the combustion of other coals, inevitably produces soot of different blackness. Through research, it is found that the black smoke in the process of burning coal is caused by a large amount of volatile matter gushing out when the coal is pyrolyzed, the amount of oxygen in the furnace is insufficient, and the volatile matter cannot be fully mixed with the oxygen in the furnace in a short time. Complete combustion cannot be achieved. The formation of soot-type pollution. [0003] The existing cold-pressed briquette structure is formed by mixing coal and binder unde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/38
Inventor 徐建生徐金翠
Owner 徐建生
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