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Fixed-bed reaction device applicable to intermediate-temperature and low-temperature multi-atmosphere oriented coal pyrolysis

A fixed-bed reaction and fixed-bed technology, applied in the direction of direct and indirect heating combined dry distillation, special form of dry distillation, petroleum industry, etc., can solve the problems of being unsuitable for industrial applications, so as to promote a cracking reaction, increase heat transfer and heat transfer Solution efficiency, uniform and controllable airflow

Active Publication Date: 2016-06-29
CHINA UNIV OF MINING & TECH +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a fixed-bed reaction device suitable for the directional pyrolysis of medium-low temperature multi-atmosphere coal, which is used to solve the existing technical limitations in this field and cannot be applied to industrial applications technical issues

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  • Fixed-bed reaction device applicable to intermediate-temperature and low-temperature multi-atmosphere oriented coal pyrolysis
  • Fixed-bed reaction device applicable to intermediate-temperature and low-temperature multi-atmosphere oriented coal pyrolysis
  • Fixed-bed reaction device applicable to intermediate-temperature and low-temperature multi-atmosphere oriented coal pyrolysis

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Embodiment Construction

[0025] Below in conjunction with accompanying drawing, the present invention will be further described.

[0026] by Figure 1-3 The 10 gas injection channels 3 are shown in the explanatory diagram, thereby illustrating the gas injection method. A top cover 13 is arranged above the fixed bed body, and the two are connected through matching upper and lower screw ports 12 , 9 , and sealed by a flange sealing ring 10 at the same time. After the multi-component atmospheric gas enters the annular passage 2 from the air inlet 1, it enters the ten gas injection passages 3 uniformly through the retaining ring 11 respectively. According to engineering experience and device load conditions, unattended control and intelligent operation of distribution valves can be realized by setting corresponding programs. The gas in the gas injection channel 3 passes the heat of the heating wall 8 transferred by the heat conducting clip 15, and enters the pyrolysis material 5 through the gas injectio...

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Abstract

The invention discloses a reaction device applicable to coal pyrolysis under intermediate-temperature and low-temperature multi-atmosphere conditions. The reaction device comprises a fixed-bed body. Heating walls are arranged on the side walls of the fixed-bed body and a base, a gas exhaust chamber, pyrolysis materials and gas injection channels are arranged in an inner cavity of the fixed-bed body, each gas injection channel is a space between an inner ring and an outer ring of an annular ring arranged close to the side walls of the fixed-bed body, the gas exhaust chamber and the pyrolysis materials are positioned in the inner rings of the annular rings, and the pyrolysis materials are positioned between the gas exhaust chamber and the gas injection channels; a gas outlet is formed in the gas exhaust chamber, a pressurization device is arranged on the gas exhaust chamber, gas inlets are formed in the gas injection channels, and gas exhaust devices are arranged on the gas injection channels; the pyrolysis materials are respectively connected with the gas injection channels and the gas exhaust chamber by gas injection nozzles and gas outlet nozzles. The reaction device has the advantages that the retention time of volatile matters such as oil and gas in the pyrolysis materials can be shortened owing to air supply modes by means pressurization gas injection and negative-pressure gas exhaust, secondary reaction in pyrolysis procedures can be inhibited, and the yield of pyrolysis oil and pyrolysis gas can be increased.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to the field of low-temperature pyrolysis in multiple atmospheres in clean coal conversion and utilization technology. Background technique [0002] The medium-low temperature pyrolysis of coal is to extract volatile components such as tar and methane in coal through pyrolysis under mild conditions (medium-low temperature zone) to make chemical raw materials or high-quality liquid fuels, so as to improve coal utilization efficiency and realize coal production. Methods for clean conversion and utilization. However, the amount of tar obtained from traditional coal pyrolysis is small (about 10%), and the content of heavy components in the tar is high, which is not conducive to subsequent processing and utilization. In order to improve the yield and quality of tar, coal pyrolysis under multi-atmosphere conditions has been proposed. The principle of this process is to saturate the free...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/00C10B51/00C10B53/06C10B53/04
CPCC10B51/00C10B53/00C10B53/04C10B53/06
Inventor 康国俊任雪峰杨娟朱庆凯王敬明尹翔王文峰焦永山
Owner CHINA UNIV OF MINING & TECH
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