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Desulfurization and denitrification combustion improver and application thereof in fuel coal

A technology of desulfurization, denitrification and combustion-supporting agent, applied in the direction of fuel additives, fuels, solid fuels, etc., can solve the problems of low coal combustion efficiency, pollution, unsatisfactory and other problems, achieve high industrial application value, reduce pollution, and reduce smoke and dust. Effect

Inactive Publication Date: 2016-12-07
郴州回康科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, all kinds of coal-fired additives are not satisfactory at present. A new coal-saving, clean, multi-functional desulfurization and denitrification value-added agent has been developed with comprehensive effects such as coal saving, desulfurization and denitrification, coke cleaning, smoke elimination, and corrosion inhibition. It is of great significance to promote and apply it on a large scale, so as to improve the problems of low coal combustion efficiency and serious pollution in my country

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A desulfurization and denitrification combustion accelerant, consisting of the following components by mass percentage:

[0022] 40% rapeseed cake, 15% ammonium carbon, 6% acidified coal gangue, 1% sodium nitrate, 0.5% potassium permanganate, 6% aluminum sulfate, 8% sodium chloride, 8% potassium chlorate, 0.5% manganese dioxide, Sodium phosphate 5%, soda ash 10%.

[0023] Add the desulfurization and denitrification combustion accelerant described in Example 1 of 1% of the coal mass into the coal, and then burn in the combustion furnace, controlling the combustion temperature to be 900°C.

[0024] Compared with the one without desulfurization and denitrification additives, the SO in the flue gas after combustion 2 The removal rate is 83%, nitrogen oxides (NO x ) removal rate is 85%, the dust is reduced by 72%, there is basically no coking and corrosion, and the coal saving reaches 30%.

Embodiment 2

[0026] A desulfurization and denitrification combustion accelerant, consisting of the following components by mass percentage:

[0027] 50% rapeseed cake, 10% ammonium carbon, 2% acidified coal gangue, 1% sodium nitrate, 0.5% potassium permanganate, 5% aluminum sulfate, 8% sodium chloride, 8% potassium chlorate, 0.5% manganese dioxide, Sodium phosphate 5%, soda ash 10%.

[0028] Add the desulfurization and denitrification combustion accelerant described in Example 2 of 0.8% of the coal mass into the coal, and then burn in the combustion furnace, controlling the combustion temperature to be 1000°C.

[0029] Compared with the one without desulfurization and denitrification additives, the SO in the flue gas after combustion 2 The removal rate is 82%, nitrogen oxides (NO x ), the removal rate is 81%, the dust is reduced by 70%, there is basically no coking and corrosion, and the coal saving reaches 30%.

Embodiment 3

[0031] A desulfurization and denitrification combustion accelerant, consisting of the following components by mass percentage:

[0032] 60% rapeseed cake, 10% ammonium carbon, 3% acidified gangue, 0.3% sodium nitrate, 0.4% potassium permanganate, 3% aluminum sulfate, 1% sodium chloride, 7% potassium chlorate, 0.3% manganese dioxide, Sodium phosphate 5%, soda ash 10%.

[0033] Add the desulfurization and denitrification combustion accelerant described in Example 3 with 1.2% of the coal mass into the coal, and then burn in the combustion furnace, controlling the combustion temperature to be 800°C.

[0034] Compared with the one without desulfurization and denitrification additives, the SO in the flue gas after combustion 2 The removal rate is 88%, nitrogen oxides (NO x ), the removal rate is 87%, the dust is reduced by 76%, there is basically no coking and corrosion, and the coal saving reaches 32%.

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PUM

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Abstract

The invention discloses a desulfurization and denitrification combustion improver and application thereof in fuel coal. The desulfurization and denitrification combustion improver is prepared from, by mass, 40%-70% of rapeseed cakes, 10%-15% of carbon ammonium, 2%-6% of acidized coal gangue, 0.3%-1% of sodium nitrate, 0.1%-0.5% of potassium permanganate, 3%-6% of aluminum sulfate, 1%-10% of sodium chloride, 2%-8% of potassium chlorate, 0.3%-0.7% of manganese dioxide, 3%-5% of sodium phosphate and 5%-10% of soda. Application of the combustion improver is implemented through the steps that the desulfurization and denitrification combustion improver of which the mass accounts for 0.5%-2% of that of the fuel coal is added and then combusted in a combustion furnace, wherein the combustion temperature is controlled at 800 DEG C-1,400 DEG C. According to the desulfurization and denitrification combustion improver, the removal rates of SO2 and nitrogen oxide (NOx) in flue gas obtained after combustion can both reach 80% or above, smoke can be reduced by 70% or above, and the decoking effect and the corrosion inhibition effect can both reach 90% or above.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a desulfurization and denitrification combustion accelerant and its application in coal combustion. Background technique [0002] my country is a major energy producer and energy consumer dominated by coal. Coal accounts for 76% and 69% of the total primary energy production and consumption in the country, respectively, and the output of raw coal has been showing a gradual increase in recent years. This coal-based energy pattern is unlikely to change significantly in the short term. According to the forecasts of the Development Research Center of the State Council and the Energy Research Institute of the Ministry of Development and Reform, the proportion of coal in my country's primary energy consumption will still exceed 60% in 2020. But at the same time, the CO produced by large-scale inefficient coal combustion (mainly thermal power generation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/12C10L10/02C10L10/04
CPCC10L9/12C10L10/02C10L10/04C10L2200/029C10L2200/0461C10L2200/0469C10L2230/22C10L2300/40
Inventor 刘至微李桂安刘孝锋
Owner 郴州回康科技有限责任公司
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