PRMH process for resource utilization of coal-based solid waste

A resourceful, coal-based technology, applied in the field of PRMH technology, to achieve the effect of minimizing energy loss, maximizing material utilization, and simple gas treatment process

Active Publication Date: 2022-03-15
山西智博环化工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the survey results show that the existing technologies are limited to the application or research from raw materials to single products and product performance testing.

Method used

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  • PRMH process for resource utilization of coal-based solid waste
  • PRMH process for resource utilization of coal-based solid waste
  • PRMH process for resource utilization of coal-based solid waste

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A PRMH process for resource utilization of coal-based solid waste according to the present invention, including raw material pretreatment system, hot air system, phase change homogenization system, waste heat recovery hydrogen production system, gas purification system, CO 2 There are seven main systems of conversion utilization system and inorganic product preparation system.

[0031] (1) Raw material pretreatment system

[0032] In this example, the content of coal gangue and fly ash in coal-based solid waste accounts for 60-85%, coal tar waste residue 0-10%, calcium carbonate 0-15%, magnesite 0-15%, titanium dioxide 0-10%. 3%.

[0033] Such as figure 1 As shown, after the coal-based solid waste is crushed and sieved, the undersieve with a particle size of less than 8mm is selected, weighed and measured, and the additives and fly ash after weighing and measured are mixed evenly in a certain proportion through the pneumatic conveying method, and the mixture The mate...

Embodiment 2

[0052] In this example, different from Example 1, coal-based solid waste contains 80-82% coal gangue, 3-5% coal tar residue, 5-8% calcium carbonate, 8-10% magnesite, and 1% titanium dioxide. ~2%. The raw materials are crushed, sieved, weighed and measured, and then pneumatically conveyed into the wide-screened powder phase-change compound furnace. The additives and fly ash are weighed and measured separately, and then enter the wide-screened powder phase-change compound furnace. The air passes through the air compressor, preheater, hot blast stove and burner, and the temperature is raised to 1150~1200°C, and then enters the wide screening powder phase change composite furnace.

[0053] The incoming charge and the raw material gas are in rapid contact and heat transfer in the wide-screened powder phase change composite furnace, and chemical processes such as cracking, phase change, combustion, reduction and physical processes of homogenization and conditioning occur in the redu...

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Abstract

The invention provides a PRMH process for resource utilization of coal-based solid waste. The PRMH process comprises a raw material pretreatment system, a hot air system, a phase change homogenization system, a waste heat recovery hydrogen production system, a gas purification system, a CO2 conversion and utilization system and an inorganic product preparation system. The coal-based solid waste is subjected to raw material compatibility through product design index control, raw material standardization controllability and product performance stabilization are achieved, and a new process route is provided for large-scale, high-valued and green utilization of the coal-based solid waste.

Description

technical field [0001] The invention belongs to the field of resource utilization of solid waste, and in particular relates to a PRMH process for resource utilization of coal-based solid waste. Background technique [0002] Common coal-based solid wastes include coal gangue, fly ash, coal chemical waste slag and other bulk solid wastes generated in the process of coal development and utilization. Among them, coal gangue is a kind of black-gray rock with low carbon content and hard texture that is associated with the coal seam during the coal formation process, and is a solid waste discharged during the coal mining and coal washing process. According to literature research, coal gangue accounts for about a quarter of coal mining output. In 2020, the total coal mining in my country is 3.84 billion tons, and the calculated coal gangue output is about 960 million tons, of which Shanxi coal gangue is about 266 million tons ( Shanxi's coal production in 2020 will be 1.063 billion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C01B32/50C03C1/00C03C6/10C03C3/087
CPCC01B3/02C01B32/50C03C3/087C03C1/002Y02P20/129
Inventor 杨智锋齐庆董子枫其他发明人请求不公开姓名
Owner 山西智博环化工程有限公司
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