Carbonization process of high-volatilize content coal

A high-volatile, dry distillation technology, used in direct heating dry distillation, petroleum industry, coke ovens, etc., can solve the problems of complicated equipment, and achieve the effect of simplifying equipment structure, high efficiency and saving investment.

Inactive Publication Date: 2008-01-30
万天骥
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] In order to overcome the indirect heating of the traditional dry distillation process which makes the equipment complicated, the present invention adopts a direct heating process with high-temperature circulati

Method used

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  • Carbonization process of high-volatilize content coal

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Embodiment

[0013] Based on 1000kg of lump coal, it is added from the top of the shaft furnace, and the preheated hot gas is introduced into the middle of the shaft furnace for 350m 3 (Temperature 1150°C), penetrate the falling coal seam, heat it and discharge volatiles, thus forming semi-coke, which continues to descend in the furnace, and introduces 550m from the bottom 3 The rising cold gas moves countercurrently, the cold gas takes away the heat in the semi-coke and merges it into the gas, and the semi-coke is cooled and released from the oven, weighing 600kg, and producing raw gas of 1310m at the same time 3 , exported from the top of the furnace, after cleaning and purification, part of it is preheated to 1150°C in the regenerator and used as heat carrier for dry distillation, part of it is introduced from the bottom of the furnace as a cooling medium for hot semi-coke, and the remaining 300m3 is used as commercial gas for external supply. And recover tar 20kg.

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Abstract

The invention relates to a carbonization process of high volatile coal, a direct heating process that heats and distills high volatile coal by using high temperature cycle gas in a shaft furnace as a carrier. Lump coal that moves up and down in the shaft furnace is heated by rising hot gas and the discharged volatiles form char; the char is cooled by cold gas that is introduced by the furnace bottom from the lower part of a furnace and then discharged outside the furnace; the rising gas is introduced outside finally by the furnace top, washed, purified and cooled; one part is taken as a cycle cooling medium, one part is taken as a cycle heat carrier after being per-heated and the rest is taken as a gas external supply and the calorific value is equal to that of a coke oven gas.

Description

Technical field: [0001] The invention belongs to the field of dry distillation production of coal, and belongs to a direct heating process for heating dry distillation of high-volatile coal with high-temperature circulating gas as a carrier. Background technique: [0002] The dry distillation process of coal is a process of converting high-volatile coal, such as lignite and other young coals, into semi-coke, and at the same time can obtain by-products such as tar and gas. The traditional dry distillation process uses indirect heating to ensure that the coal will not be burned. , there is also a direct heating method using a solid heat carrier, but the equipment is more complicated and has low efficiency and high investment. However, a large number of domestic dry distillation uses simple direct heating, which is not only inefficient, but also gas and tar cannot be recovered, especially polluted environment. [0003] The present invention adopts shaft furnace circulating hig...

Claims

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Application Information

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IPC IPC(8): C10B49/02
Inventor 万天骥任大宁孔令坛黄务涤
Owner 万天骥
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