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Belt furnace pyrolysis apparatus and belt furnace pyrolysis process

A belt furnace and pyrolysis technology, used in coke ovens, chemical industry, petroleum industry, etc., can solve problems such as unfavorable processing and utilization, low tar recovery rate, environmental pollution, etc., and achieve considerable economic and environmental benefits.

Active Publication Date: 2015-11-11
北京柯林斯达科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional pyrolysis method has a low yield of tar and a high content of heavy components, which is not conducive to processing and utilization
At the same time, there are generally problems such as low dust removal efficiency, low tar recovery rate, large amount of wastewater treatment, and serious environmental pollution in the prior art.

Method used

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  • Belt furnace pyrolysis apparatus and belt furnace pyrolysis process

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] combine figure 1 , the belt furnace pyrolysis device includes a graded distribution system I, a belt furnace system II, a tar recovery system III, and a hot stove system IV;

[0037] Described graded distribution system 1 prepares pyrolysis raw materials for the described belt furnace pyrolysis device, including: swing type distribution belt 1, vibrating grading screen 2, graded buffer bin 3, material bed height adjustment gate 4;

[0038] The belt furnace system II pyrolyzes pyrolysis raw materials to produce raw coal gas and cools the semi-coke out of the furnace, including: drying section 5, pyrolysis sections 6, 7, waste heat recovery section 8, final cooling section 9, heat ring Fan 12, product discharger 10, diverting roller 23, power roller 25, air distribution chamber 26;

[0039] The tar recovery system III purifies raw coal gas and obtains tar products, including: high temperature dust collector 16, oil cooling tower 17, intercooling tower 18, electric coke c...

Embodiment 2

[0043] The pyrolysis raw material selected in this embodiment is coal, and a kind of belt furnace pyrolysis process comprises the following steps:

[0044] In step (1), the coal is crushed to less than 30mm, and the pyrolysis raw material passes through the swing type distribution belt 1, the vibrating grading screen 2, and enters the grading buffer bin 3 in front of the furnace, and the coal material is evenly layered through the material layer height adjustment gate 4 The cloth is distributed on the flexible conveyor belt of the belt furnace system;

[0045] Step (2), the pyrolysis raw material enters the drying section 5 with the conveyor belt, and the gas heat carrier in the drying section passes through the layer to heat the raw material; the gas heat carrier in the drying section is the high-temperature flue gas produced by the drying hot blast stove 13 and extracted The low-temperature flue gas is mixed with the temperature-adjusted gas; in the drying section 5, the pyr...

Embodiment 3

[0057] The pyrolysis raw material selected in this embodiment is still coal, and a kind of belt furnace pyrolysis process comprises the following steps:

[0058] In step (1), the coal is crushed to less than 30mm, and the pyrolysis raw material passes through the swing type distribution belt 1, the vibrating grading screen 2, and enters the grading buffer bin 3 in front of the furnace, and the coal material is evenly layered through the material layer height adjustment gate 4 The cloth is distributed on the flexible conveyor belt of the belt furnace system;

[0059] Step (2), the pyrolysis raw material enters the drying section 5 with the conveyor belt, and the gas heat carrier in the drying section passes through the layer to heat the raw material; the gas heat carrier in the drying section is the high-temperature flue gas produced by the drying hot blast stove 13 and extracted The low-temperature flue gas is mixed with the temperature-adjusted gas; in the drying section 5, t...

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Abstract

The invention discloses a belt furnace pyrolysis apparatus and a belt furnace pyrolysis process.The belt furnace pyrolysis apparatus comprises a hierarchical material distribution system (I), a belt furnace system (II), a tar recovery system (III) and a hot blast stove system (IV). The belt furnace pyrolysis process is a low-temperature pyrolysis peocess that a horizontal moving bed gas heat carrier directly heats the belt furnace; pyrolysis feedstocks subsequently undergoes drying, pyrolysis; waste-heat recovery and final cooling with a horizontally moving conveyor belt, and semicoke is obtained; the heat carrier is hot flue gas generated by combustion in a drying-section hot blast stove and a pyrolysis-section hot blast stove; the hot carrier inside the belt furnace performs layer-penetrating heating on coal materials from bottom to top; and coarse coal gas generated by pyrolysis passes a tar system to have tar recovered; the purified coal gas returns to the belt furnace to perform the waste-heat recovery on the hot semicoke, so as to fully take advantage of waste heat of the semicoke. The coal gas after the waste-heat recovery serves as a fuel of the drying hot blast stove and the pyrolysis hot blast stove and is used for temperature regulating. According to the scheme provided by the invention, the belt furnace pyrolysis apparatus is energy-saving, water-saving and environmentally friendly, and has good economic and social benefits.

Description

technical field [0001] The invention belongs to the field of coal pyrolysis and coal chemical industry, and specifically relates to a belt furnace pyrolysis device and a belt furnace pyrolysis process. Background technique [0002] In my country's energy composition structure, coal occupies the main position. However, the large-scale coal fields discovered in my country in recent years are mainly bituminous coal and lignite. At present, more than 90% of bituminous coal and lignite are mainly used for direct combustion of power generation, industrial boilers and civil fuels, which has caused a series of serious ecological and environmental pollution problems. At the same time, the oil, gas and Chemical resources. [0003] How to efficiently utilize bituminous coal and lignite while minimizing environmental pollution is an urgent technical problem in the field of coal chemical industry under the condition of social development where energy resources are continuously depleted...

Claims

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Application Information

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IPC IPC(8): C10B53/04C10B57/10C10B53/02C10B53/06C10B39/02C10B49/02C10K1/00C10K1/02C10K1/04
CPCY02E50/10Y02P20/10Y02P20/129
Inventor 不公告发明人
Owner 北京柯林斯达科技发展有限公司