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Revolving bed coal catalytic pyrolysis method

A rotating bed, coal catalysis technology, used in indirect heating dry distillation, special form dry distillation, petroleum industry, etc., can solve the problems of low strength and easy pulverization of briquette, and achieve the effect of improving tar quality, improving conversion rate and

Active Publication Date: 2015-09-16
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the deficiencies of the prior art, the present invention proposes a rotary bed coal catalytic pyrolysis method. The method skillfully combines the low strength of the catalyst briquettes with the low requirements of the rotary bed pyrolysis furnace for the strength of the incoming materials. It solves the problem of low coal strength after molding with powdered coal and catalyst, and is easy to pulverize during the pyrolysis process, reduces the dust content in the volatile matter in the coal pyrolysis process, and then reduces the dust content in the tar, and increases the tar yield , to improve tar quality

Method used

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Embodiment 1

[0043] The catalyzer of the present embodiment is vanadium-titanium magnetite, and the percentage by weight of pulverized coal molding is: pulverized coal: catalyst: binding agent=81%: 4%: 15%; Forming pressure is 22MPa / , and drying temperature is 170 ℃ , the pyrolysis temperature of the rotating bed is 500°C, and the processing capacity of the rotating bed is 1 million tons / year. The catalytic pyrolysis results are shown in Table 1.

[0044] Table 1 Catalytic pyrolysis results (dry basis)

[0045]

Embodiment 2

[0047] The catalyzer of the present embodiment is vanadium-titanium magnetite, and the percentage by weight of pulverized coal molding is: pulverized coal: catalyst: binding agent=80%: 6%: 14%; Forming pressure is 21MPa / , and drying temperature is 180 ℃ , the pyrolysis temperature of the rotating bed is 550°C, and the processing capacity of the rotating bed is 1 million tons / year. The catalytic pyrolysis results are shown in Table 2.

[0048] Table 2 catalytic pyrolysis results (dry basis)

[0049]

Embodiment 3

[0051] The catalyst of this embodiment is Fe 3 o 4 , the percent by weight of pulverized coal molding is: pulverized coal: catalyst: binding agent=79%: 3%: 18%; Forming pressure is 19MPa / , and drying temperature is 190 ℃, and rotating bed pyrolysis temperature is 500 ℃, and rotating Bed treatment capacity is 1 million tons / year. The catalytic pyrolysis results are shown in Table 3.

[0052] Table 3 catalytic pyrolysis results (dry basis)

[0053]

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Abstract

The invention provides a revolving bed coal catalytic pyrolysis method. The method comprises steps of raw coal pretreatment, catalyst preparation, powdered coal shaping with addition of the catalyst, catalyst briquette coal drying, and pyrolysis in a revolving bed thermal decomposition furnace, and the catalyst is one or some selected from vanadium titanium magnetite and Fe3O4. The method solves the problems that after powdered coal shaping with addition of the catalyst, the briquette coal is low in intensity, and is easy to pulverize during the pyrolysis process. The dust content in tar can be lowered, the tar yield is raised, and the tar quality is improved.

Description

technical field [0001] The present application relates to a rotary bed coal catalytic pyrolysis method. Background technique [0002] According to the prediction of international geologists, low-rank coal is one of the main energy sources that can be used in the future, accounting for more than half of the world's total coal reserves. In the future, how to scientifically, rationally and fully utilize low-rank coal resources will be of great significance to the sustainable development of the coal industry. [0003] Low-rank coal can be converted into gas, tar, semi-coke and other products through pyrolysis, and then realize the clean and comprehensive utilization of resources, so it has been widely valued by scholars at home and abroad. Pyrolysis technology has a research history of hundreds of years. At present, coal pyrolysis technology has problems such as low yield of reaction oil products and high content of heavy components in oil products. Although scholars have done...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/08C10B57/06C10B57/10C10B47/30
Inventor 赵小楠王其成吴道洪
Owner SHENWU TECH GRP CO LTD
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