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Clean green fuel and its prepn process

A clean, environmentally friendly, fuel technology, applied in fuels, solid fuels, liquid carbonaceous fuels, etc., can solve problems such as prospects and limitations of significance, and achieve the effects of low cost, alleviation of environmental problems, and promotion of promotion.

Inactive Publication Date: 2007-11-07
武汉隆兴裕环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this sense, the prospects and significance of traditional coal-water slurry have great limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Take 5 kg of coal and go through the high-pressure roller mill to crush it into a powder of less than 2 mm, then adjust the treated coarse powder with water into a slurry with a solid content of 72%, and then enter the ultra-fine grading mill for ultra-fine treatment to become Particles with an average particle size below 1 micron are then put into storage tanks.

[0058] Take 1 kg of 200-mesh heavy calcium, adjust it into a slurry with a solid content of 65% with water, then enter it into an ultra-fine grading mill for ultra-fine treatment, and then put it into a storage tank.

[0059] Fully mix the coal slurry with the heavy calcium slurry, burn through the combustion nozzle, and measure the SO in the flue gas 2 The content is 52mg.

Embodiment 2

[0061] Take 5 kg of coal and first pass through the high-pressure roller mill to crush it into a powder of less than 2 mm, then add 1 kg of 200 mesh heavy calcium to the processed coarse powder, adjust it to a slurry with a solid content of 68% with water, and then enter the Ultra-fine treatment is carried out in the ultra-fine grading mill to become particles with an average particle size of less than 1 micron, and then put into the storage tank. Combustion through combustion nozzles and measurement of SO in the flue gas 2 The content is 47mg.

Embodiment 3

[0063] Take 5 kg of coal and first pass through high-pressure roller milling to crush it into powder below 2 mm, then adjust the treated coarse powder into a slurry with a solid content of 65% with water, add about 85 grams of chemical desulfurizer NaOH, Then enter the ultrafine grading mill for ultrafine treatment, and then put it into the storage tank.

[0064] The treated coal slurry is separated from solid and liquid by a centrifuge and washed three times with water. The separated and washed coal is then placed in storage tanks.

[0065] Adjust the solid content of the washed coal, burn it through the combustion nozzle, and measure the SO in the flue gas 2 The content is 1.1mg.

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Abstract

The present invention discloses one kind of clean green fuel and its preparation process. The preparation process includes the steps of: crushing coal to average size smaller than 2 mm, adding water to form slurry, superfine treating the slurry and adding desulfurizing agent. The present invention applies superfine treating technology and separating technology in treating coal to increase the specific surface area, raise combustion efficiency and raise desulfurizing rate, so as to realize the clean efficient combustion of coal at low cost.

Description

technical field [0001] The invention relates to a preparation method of fuel and the prepared fuel, in particular to a preparation method of clean and environment-friendly fuel capable of reducing the emission of pollutants such as sulfur dioxide after combustion and the fuel prepared by the method. Background technique [0002] In China's energy resource reserves, coal accounts for more than 84%, and oil resources are seriously insufficient. In 2005, my country produced more than 2 billion tons of raw coal, 175 million tons of crude oil, imported 136.17 million tons, and imported 30 million tons of high-sulfur heavy oil and Ollie oil. From the perspective of resource supply, if the ash and sulfur in coal can be fully removed, a new energy source can be developed and a part of the fuel oil demand can be replaced. [0003] The so-called "clean and environmentally friendly" is essentially to process coal to remove ash and sulfur, so that it meets the standards of clean combus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/32C10L9/10
Inventor 李宇文
Owner 武汉隆兴裕环保设备有限公司
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