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
CN1966612AActive Publication Date: 2007-05-23SHAANXI SHENMU SAN JIANG COAL CHEM
0 Cites 36 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI SHENMU SAN JIANG COAL CHEM
Publication Date
2007-05-23

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More