Device for improving quality of coal by pyrolysis

A coal pyrolysis and pyrolyzer technology, which is applied in the direction of direct heating and dry distillation, gas dust removal, petroleum industry, etc., can solve the problems of low tar quality, low heat utilization rate, poor pyrolysis dust removal effect, etc. Simplified operation and solved the effect of tar dust clogging
CN101608126BActive Publication Date: 2013-04-10CHNA ENERGY INVESTMENT CORP LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHNA ENERGY INVESTMENT CORP LTD
Publication Date
2013-04-10

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Abstract

The invention provides a device for improving the quality of the coal by pyrolysis, comprising a rotary drier, a pyrolyzer and a heating rotary kiln. The rotary drier is used for receiving and drying raw coal with granularity being less than and equal to 30mm, and is provided with a sleeve structure to directly change heat between the raw coal and the hot flue gas and indirectly change heat between the raw coal and hot semicoke; the pyrolyzer receives mixture of the dried raw coal and the high-temperature semicoke by a feed line of solid material, directly changes heat between the raw coal and the hot semicoke, pyrolyzes the mixture, and is further provided with a heat clamping sleeve accompanied with high-temperature flue gas; and the heating rotary kiln is used for receiving the hot semicoke from the pyrolyzer and processing the hot semicoke by the means of heating. The device for improving the quality of the coal by pyrolysis has flexible operation, good quality of the generated semicoke and the generated tar, high cascade utilization of energy and high system thermal efficiency, properly solving the technical problems such as dust and tar blocking, high dust content in the tar, etc.
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Description

technical field

[0001] The invention relates to a coal pyrolysis upgrading device, more specifically, a device especially suitable for the low coalification degree coal pyrolysis upgrading process. Background technique

[0002] Coal with low degree of coalification refers to lignite and bituminous coal with a low degree of metamorphism. Among them, low-metamorphic bituminous coal includes long-flame coal, non-caking coal, weakly caking coal, gas coal, etc., and its total amount accounts for more than 50% of my country's coal reserves. The characteristics of coal quality are: high volatile content, low-temperature pyrolysis tar yield High chemical reactivity, high comprehensive development and utilization value. Pyrolysis (or dry distillation) is a commonly used coal processing and utilization technology. Since the 1970s, the development of coal pyrolysis upgrading technology has generally received attention, and researchers have successively developed a variety of processes...

Claims

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