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A kind of clean coal with desulfurization effect, high-efficiency combustion and preparation method

A clean and efficient technology, applied in solid fuels, fuels, petroleum industries, etc., can solve the problems of large equipment and operation investment, low utilization rate of desulfurizers, environmental air pollution, etc., achieve high utilization rate of calcium and magnesium, improve self-desulfurization The effect of high efficiency and desulfurization efficiency

Active Publication Date: 2018-12-11
韩秀峰 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to solve the problems of low desulfurization agent utilization rate and large investment in equipment and operation in the desulfurization process of the existing coal utilization process; the existing small boilers and residential coal have no ability to desulfurize, thereby causing environmental air pollution; develop a Sulfur-fixing, highly efficient combustion clean coal and its preparation method that can be used directly with desulfurization effect, and control part of the air pollution caused by coal burning from the source

Method used

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  • A kind of clean coal with desulfurization effect, high-efficiency combustion and preparation method
  • A kind of clean coal with desulfurization effect, high-efficiency combustion and preparation method

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specific Embodiment approach 1

[0048] 1) Add active calcium hydroxide and active magnesium hydroxide fine powder with particle size <100 μm into water, and the mass ratio of active fine powder to water is 1:1~5; after stirring evenly, let stand for 5~10 minutes, then Grinding with a high-speed stirring mill for 20 minutes can obtain nano-active calcium hydroxide and nano-active magnesium hydroxide slurry with a molecular diameter of less than 10 μm;

[0049] 2) According to the content of sulfur in the raw coal, under the premise that the calcium-sulfur molar ratio is guaranteed to be 1.2, add water to the nano-active calcium hydroxide and nano-active magnesium hydroxide slurry to dilute the active calcium-magnesium desulfurization slurry;

[0050] 3) The raw coal with a sulfur content of 0.7% and a particle size of less than 60 mm is screened and passed through the calcium-magnesium desulfurization slurry, respectively,

[0051] 4) the calcium-magnesium desulfurization slurry is uniformly mixed with raw co...

specific Embodiment approach 2

[0053] 1) Add active calcium hydroxide and active magnesium hydroxide fine powder with particle size <100 μm into water, and the mass ratio of active fine powder to water is 1:1~5; after stirring evenly, let stand for 5~10 minutes, then Grinding with a high-speed stirring mill for 20 minutes can obtain nano-active calcium hydroxide and nano-active magnesium hydroxide slurry with a molecular diameter of less than 10 μm;

[0054] 2) According to the sulfur content in the raw coal, under the premise that the calcium-sulfur molar ratio is guaranteed to be 1.4, add water to the nano-active calcium hydroxide and nano-active magnesium hydroxide slurry to dilute the active calcium-magnesium desulfurization slurry;

[0055] 3) The raw coal with a sulfur content of 0.7% and a particle size of less than 60 mm is screened and passed through the calcium-magnesium desulfurization slurry;

[0056] 4) the calcium-magnesium desulfurization slurry is uniformly mixed with the raw coal, the mass ...

specific Embodiment approach 3

[0058] 1) Add calcium hydroxide and magnesium hydroxide fine powder with particle size <100μm into water, the mass ratio of fine powder to water is 1:1~5; after stirring evenly, let stand for 15~30 minutes, then stir with high speed Grinding machine for 40 minutes can only obtain nano-calcium hydroxide and nano-magnesium hydroxide slurry with molecular diameter <30μm;

[0059] 2) According to the content of sulfur in the raw coal, under the premise that the calcium-sulfur molar ratio is guaranteed to be 1.4, add water to the nano-calcium hydroxide and nano-magnesium hydroxide slurries to dilute the calcium-magnesium desulfurization slurries;

[0060] 3) The raw coal with a sulfur content of 0.7% and a particle size of less than 60 mm is screened and passed through the calcium-magnesium desulfurization slurry;

[0061] 4) the calcium-magnesium desulfurization slurry is uniformly mixed with raw coal, the mass ratio of coal and calcium hydroxide is 55:1, and the mass ratio of coa...

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Abstract

The invention discloses sulfur-fixation efficiently combusted clean coal with a desulfuration effect and a preparation method used in industries and families. Nano active calcium hydroxide and nano active magnesium hydroxide are prepared and added into raw coal, so that on the basis of the prior art, the sulfur removal efficiency of fire coal and the combustion efficiency of coal are further improved, and emission of SO2 in air is reduced. The sulfur-fixation efficiently combusted clean coal has the main application that firstly, emission of SO2 of industrial fire coal into air is reduced; secondly, the operation cost of sulfur removal is lowered; thirdly, due to direct use of the clean coal in arcola and families, the emission amount of SO2 in air can be effectively reduced, air pollution can be alleviated, and the probability of haze can be reduced; fourthly, the use amount of a calcium desulfurizer is reduced, and the utilization efficiency of the calcium desulfurizer is improved; fifthly, the effective utilization rate of raw coal can be increased.

Description

[0001] Technical field Energy saving and environmental protection [0002] The invention relates to a technology for reducing sulfur oxide emission during coal combustion, and is a clean coal technology that can be burned efficiently; in particular, it relates to a coal mixture with desulfurization effect and a preparation method thereof. Background technique [0003] The pollutants produced by coal combustion have caused damage to the ecological environment and have become the top priority of national air pollution control. For the removal of sulfur oxides produced in the coal combustion process, at present, coal is mainly used for flue gas treatment after utilization, such as wet, semi-dry or dry desulfurization technology, which has the advantage of high desulfurization efficiency, However, there are a series of problems such as high investment and operating costs, large floor space, and low efficiency of filter bags caused by solid sulfur products. Generally speaking, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/04C10L9/10
CPCC10L5/04C10L9/10
Inventor 韩天保宋春莲韩秀峰
Owner 韩秀峰
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