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Sulfur-fixation efficiently combusted clean coal with desulfuration effect and preparation method

An efficient and clean technology, applied in the direction of solid fuel, fuel, petroleum industry, etc., can solve the problems of large investment in equipment and operation, low utilization rate of desulfurization agent, 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: 2016-07-06
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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  • Sulfur-fixation efficiently combusted clean coal with desulfuration effect and preparation method
  • Sulfur-fixation efficiently combusted clean coal with desulfuration effect and preparation method

Examples

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specific Embodiment approach 1

[0048] 1) Add active calcium hydroxide and active magnesium hydroxide fine powders with a particle size of <100 μm into water, the mass ratio of active fine powders to water is 1:1 to 5; stir evenly and let stand for 5 to 10 minutes, then Grind with a high-speed stirring grinder for 20 minutes to obtain nano-active calcium hydroxide and nano-active magnesium hydroxide slurries with a molecular particle size of less than 10 μm;

[0049] 2) According to the sulfur content 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) Sieve the raw coal with a sulfur content of 0.7% and a particle size of <60mm and pass through the calcium and magnesium desulfurization slurry respectively,

[0051] 4) The calcium-magnesium desulfurization slurry is uniformly mixed with raw coal, the ma...

specific Embodiment approach 2

[0053] 1) Add active calcium hydroxide and active magnesium hydroxide fine powders with a particle size of <100 μm into water, the mass ratio of active fine powders to water is 1:1 to 5; stir evenly and let stand for 5 to 10 minutes, then Grind with a high-speed stirring grinder for 20 minutes to obtain nano-active calcium hydroxide and nano-active magnesium hydroxide slurries with a molecular particle size of less than 10 μm;

[0054] 2) According to the sulfur content in the raw coal, under the premise of ensuring that the calcium-sulfur molar ratio is 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) Sieve raw coal with a sulfur content of 0.7% and a particle size of <60 mm and pass through the calcium and magnesium desulfurization slurry;

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

specific Embodiment approach 3

[0058] 1) Add calcium hydroxide and magnesium hydroxide fine powders with a particle size of <100 μm into water, the mass ratio of the fine powders to water is 1:1-5; stir well and let stand for 15-30 minutes, then stir with high speed Grinding with a grinder for 40 minutes, only nano-calcium hydroxide and nano-magnesium hydroxide slurries with a molecular particle size of <30 μm can be obtained;

[0059] 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-calcium hydroxide and nano-magnesium hydroxide slurry to dilute the calcium-magnesium desulfurization slurry;

[0060] 3) Sieve raw coal with a sulfur content of 0.7% and a particle size of <60 mm and pass through the calcium and magnesium desulfurization slurry;

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

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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] Energy saving and environmental protection in the field of technology [0002] The invention relates to a technology for reducing the emission of sulfur oxides in the coal combustion process, which is a clean coal technology capable of high-efficiency combustion; in particular, it relates to a coal mixture with desulfurization effect and a preparation method thereof. Background technique [0003] Pollutants produced by coal combustion have caused damage to the ecological environment, which has become a top priority for national air pollution control. Aiming at the removal of sulfur oxides produced in the coal combustion process, currently the main method of flue gas treatment after coal utilization is carried out, 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 due t...

Claims

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Application Information

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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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