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Semicoke combustion desulfurization and denitrification additive as well as preparation method and application thereof

A desulfurization, denitration and additive technology, which is applied to fuel additives, fuels, solid fuels, etc., can solve the problems that the combustion efficiency of semi-coke needs to be improved, and does not have the effect of optimizing combustion to remove coal slag, so as to achieve good sulfur fixation effect and reduce reaction activation. energy, the effect of improving the combustion characteristics

Inactive Publication Date: 2020-10-02
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can reduce the amount of flue gas produced during the combustion of bituminous coal, treat the sulfur oxides and nitrogen oxides produced by bituminous coal combustion, and reduce the environmental pollution caused by bituminous coal combustion; however, this patented technology does not have the ability to optimize combustion and effectively inhibit , The effect of removing coal slag, the combustion efficiency of semi-coke needs to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A semi-coke combustion desulfurization and denitrification additive comprises the following components in parts by weight: 30 parts of ammonium chloride, 15 parts of magnesium hydroxide and 3 parts of sodium tetraborate. The medicines used in this example have a purity of 99.9%, all purchased from Aladdin Company.

[0031] The preparation method of the semi-coke combustion desulfurization and denitration additive in this implementation is: mixing ammonium chloride, magnesium hydroxide and sodium tetraborate with a weight ratio of 30:15:3 to make a semi-coke combustion additive composition; The prepared semi-coke combustion desulfurization and denitrification additive is used to promote the combustion reaction of semi-coke powder; the semi-coke combustion additive is mixed with the prepared semi-coke sample according to the ratio of 1:24, put into a coal mill to fully pulverize and mix .

[0032] Add the coke powder containing semi-coke combustion desulfurization and de...

Embodiment 2

[0038] This example shows the semi-coke combustion ignition temperature, embers temperature, and reaction activation energy of different additive contents. The thermogravimetric analysis results at different addition ratios are shown in Table 2, which can effectively illustrate its promotion effect on the combustion process. The present invention is mostly common chemical raw materials, easy to obtain, and low in preparation cost. In addition, since the additive of the present invention is solid, it has the characteristics of convenient and simple storage and transportation.

[0039] Table 2 Ignition temperature, burnout temperature, and activation energy of semi-coke combustion with different additive contents

[0040] sample name T i (℃)

[0041] It can be seen from Table 2 that after adding a certain amount of additives, the ignition temperature, embers temperature and reaction activation energy of semi-coke combustion are significantly reduced, which is beneficial...

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PUM

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Abstract

The invention relates to a semicoke combustion desulfurization and denitrification additive. The additive comprises the following components in parts by weight: 10-50 parts of ammonium chloride; 10-30parts of magnesium hydroxide; and 1-10 parts of sodium tetraborate. Compared with the prior art, the semi-coke combustion efficiency can be improved, sulfur oxides and nitrogen oxides in combustion products are reduced, the pollution of semi-coke combustion to the environment is reduced, and the semi-coke combustion device has the advantages of fuel saving, emission reduction, low production cost, good economic benefits, convenience in storage and transportation and the like.

Description

technical field [0001] The invention relates to the field of coal energy, in particular to a semi-coke combustion desulfurization and denitrification additive. Background technique [0002] my country's energy structure is dominated by coal. Although coal resources are abundant, the proportion of low-rank coal is relatively high. Low-rank coal graded utilization technology can efficiently and cleanly utilize low-rank coal. The main solid product, semi-coke, has a low water content and is a good smokeless fuel with high calorific value, which can be used for combustion power generation and heat supply. Like coal combustion, semi-coke combustion also produces SO 2 and NO x . SO in combustion flue gas 2 and NO x Emissions will not only corrode the equipment, but also cause serious air pollution when discharged into the atmosphere. SO 2 and NO x The existence of exhaust gas will also increase the required exhaust gas temperature, waste heat energy and increase equipment ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10C10L10/00
CPCC10L9/10C10L10/00
Inventor 郭瑞堂施旭潘卫国官贞珍秦浩王忠一柳星宇
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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