Coal deactivation treatment device

Abstract

The purpose of the present invention is to prevent spontaneous combustion of coal and to allow oxygen to be efficiently adsorbed on the surface of coal. The coal deactivation treatment device of the present invention has a rotary kiln main body (103), a feed pipe (142) and a cap (143), the rotary kiln main body (103) is set to be rotatable, and coal and processing gas are supplied to its interior , the feed pipe (142) is set to be able to rotate together with the rotary kiln main body (103), and is extended and set in the length direction of the rotary kiln main body (103), the cooling water circulates inside it, and the cap-shaped part (143) The outer peripheral part of the feed pipe (142) protrudes toward the rotation direction of the feed pipe (142), so that when the rotary kiln main body (103) rotates, it passes through the coal seam formed by coal (2) accumulated in the rotary kiln main body (103) The feeding pipe (142) and the cap (143) are configured in the same way.

Description

technical field [0001] The invention relates to a coal deactivation treatment device, which uses an oxygen-containing treatment gas to perform coal deactivation treatment. Background technique [0002] Lignite, sub-bituminous coal and other low-quality coals (low-rank coals) with high moisture content have a low calorific value per unit weight. By heating them, they can be dried or dry-distilled, and by modifying them, they can be reduced in a low-oxygen environment. The oxidation reaction activity in it becomes upgraded coal, which can prevent spontaneous combustion and increase the calorific value per unit weight. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2007-237011 [0006] Patent Document 2: International Publication No. 95 / 13868 Handbook [0007] Summary of the invention [0008] The problem to be solved by the invention [0009] As a coal deactivation treatment device for deactivating pyroly...

AI Technical Summary

Problems solved by technology

[0011] In the above-mentioned coal deactivation treatment device, if the diameter of the above-mentioned feed pipe is large, the amount of carbonized coal attached to the feed pipe will increase corresponding to the size of the feed pipe, so the above-mentioned dry distillation may occur. Coal is excessively pulverized, and the pulverized carbonized coal will go with the treatment gas supplied to the rotary kiln and be discharged out of the system together with the treatment gas, resulting in a decrease in the yield of deactivated coal

On the other hand, if the diameter of the feed pipe is small, the amount of pyrolysis coal adhering to the feed pipe will decrease corresponding to the size, so the contact efficiency between the pyrolysis coal and the process gas may decrease. , cannot effectively carry out the deactivation treatment of the above carbonized coal

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