Low-temperature coal carbonization manufacturing technique

A production process, coal dry distillation technology, applied in the field of coal dry distillation process, can solve the problems of low processing capacity, uneven heating and high temperature control of dry distillation furnace, and achieve the effect of increasing furnace volume, uniform heating and low temperature control

Active Publication Date: 2007-05-23
SHAANXI SHENMU SAN JIANG COAL CHEM
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AI Technical Summary

Problems solved by technology

[0002] The existing coal carbonization process adopts the internal combustion and external heating type. The temperature control of this carbonization process is relatively high, the processing capacity of the carbonization furnace is relatively low, and the heating is uneven, so that the tar yield is low

Method used

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  • Low-temperature coal carbonization manufacturing technique

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0021] The overall structural diagram of the low-temperature coal dry distillation square furnace shown in Figure 1, the low-temperature coal dry distillation production process is as follows:

[0022] 1. Low-temperature retort furnaces require the type of coal to be fed into the furnace to be bituminous coal, long-flame coal, non-caking coal or weakly caking coal, with a particle size of 20 to 120 mm;

[0023] 2. The raw coal is fed from the coal hopper 1 on the top of the furnace, enters into 4 auxiliary coal boxes 3 through 2 discharge rollers 2, and enters the top of the furnace through the auxiliary coal boxes 3. The gas collection umbrella 4 is installed on the top of the furnace. The umbrella 4 divides the materials again, and evenly distributes the coal lumps into the furnace o...

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Abstract

The invention disclosed a low temperature coal dry distillating process which includes the following steps: choosing the material coal; the coal goes through coal cup, roller, and assistant coalbox to get into collecting umbrella and being separated; pre-heating the coal in the drying stage; dry-distillating at 100-550DEG C for about 4h, the temperature of heating region is 700-800DEG C to decrease the content of semi-coal to less than 6%; cooling the semi-coal through the water-cooling jacket box. The heat in the stove is all absorbed by the coal in the invention. It needs less time to dry distillate the coal and it's quite direct and simple. The invention adopts big containing space, the heating gas is provided uniformly to the bottom of the stove so the stove throughput is 3 times more than the traditional stove; it can heat the material more uniformly and it need less temperature control; the tar yield has been increased and the recovery rate has been increased from less than 50% to 80% or more.

Description

technical field [0001] The invention relates to a coal dry distillation process, in particular to a low-temperature coal dry distillation production process. Background technique [0002] The existing coal carbonization process adopts the internal combustion and external heating method. The temperature control of such carbonization process is relatively high, the processing capacity of the carbonization furnace is relatively low, and the heating is uneven, so that the tar yield is low. Contents of the invention [0003] In order to solve the above existing problems, the object of the present invention is to provide a low-temperature coal dry distillation process for maximizing the recovery of coal tar during the coal dry distillation process. [0004] The technical solution of the present invention is achieved in that the low-temperature coal dry distillation production process comprises the following steps: [0005] 1. Select raw coal: the coal type is bituminous coal, l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B47/02
Inventor 尚文忠王茂义辛绍兵
Owner SHAANXI SHENMU SAN JIANG COAL CHEM
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