Powder coal grading clean multigang utilization technology using themal dissociation as the first stage

A technology of pyrolysis and pulverized coal, which is applied in the preparation of liquid hydrocarbon mixtures, special dry distillation, and the petroleum industry. It can solve the problems of difficult control of environmental protection and purification, high operating costs, and complicated combustion processes, and achieve high cleanliness, environmental protection and social benefits. , Low operating costs and high economic benefits

Inactive Publication Date: 2007-10-31
董久明
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Problems solved by technology

[0002] The existing pulverized coal utilization technology has many problems in gasification. When the gasification temperature is high, it is very uneconomical to decompose the high value-added hydrocarbon chemical products in coal into chemical raw material gas at high operating costs. Gasification When the temperature is low, the cracking of these high-value-added hydrocarbon chemical products is incomplete, and it is even more uneconomical to increase the purification cost. In terms of combustion and utilization, burning the high-value-added hydrocarbon products that can be pyrolyzed and extracted from coal is itself a waste of resou

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  • Powder coal grading clean multigang utilization technology using themal dissociation as the first stage

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Embodiment Construction

[0008] The present invention is described in detail below in conjunction with accompanying drawing and embodiment, and it comprises: fluidized bed drying pyrolysis device 1, multi-circulation fluidized bed gasification device 38, circulating fluidized bed boiler 32, combined heat and power system 35, it is made of drying Composed of pyrolysis, gasification, and combustion processes, the drying pyrolysis device 1 is composed of a drying bed 10, a low-temperature pyrolysis bed 7, a medium-temperature pyrolysis bed 6, and a combustion chamber 3. After the raw coal is processed and screened by the raw coal processing The pulverized coal enters the drying bed 10 on the upper part of the fluidized bed drying pyrolysis device 1, and after being heated and dried by the coal gas provided by the pyrolysis bed 7 to remove moisture, it is heated to about 150°C-200°C and enters the low-temperature pyrolysis bed 7 for further processing. Pyrolysis reaction, the pyrolysis temperature is about...

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Abstract

The invention discloses a dust coal grading clean multigang utilizing technique with decomposition as the first grade, which comprises the following steps: processing and sorting raw coal through raw coal processing machine; getting the raw coal with a finite grain size; entering into fluidized-bed drying pyrogenic installation; proceeding dry pyrogenic reaction; getting high carbon half pulverized coke; entering into multiple circulating fluidized bed gasifying installation; proceeding multiple circulating gasifying reaction; getting synthesis gas; leading into chemical industry production; entering solid phase ash coke with low carbon content into circulating fluidized bed boiler; flaming completely. This invention possesses stable craft and low cost, which can utilize all of heat energy in craft course.

Description

Technical field: [0001] The invention relates to a pulverized coal utilization technology, in particular to a pulverized coal graded and clean multiple utilization technology with pyrolysis as the first stage. Background technique: [0002] The existing pulverized coal utilization technology has many problems in gasification. When the gasification temperature is high, it is very uneconomical to decompose the high value-added hydrocarbon chemical products in coal into chemical raw material gas at high operating costs. Gasification When the temperature is low, the cracking of these high-value-added hydrocarbon chemical products is incomplete, and it is even more uneconomical to increase the purification cost. In terms of combustion and utilization, burning the high-value-added hydrocarbon products that can be pyrolyzed and extracted from coal is itself a waste of resources. waste, and in the gasification process, the heat release of oxidative combustion and the heat absorption...

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Application Information

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IPC IPC(8): C10B53/04C10G1/00
Inventor 董久明
Owner 董久明
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