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Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal

A coal-saving additive and additive technology, which is applied in the field of boiler coal combustion support, coal-saving additive, and desulfurization, can solve the problems of low desulfurization, dust removal and coal saving efficiency, high carbon content of slag and soot concentration, and increased boiler coking accidents. , to achieve complete combustion, improve thermal efficiency, and prolong the effect of burning time

Inactive Publication Date: 2008-07-30
周兴泽
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, a lot of coal additives have appeared in the domestic market. Their main functions are desulfurization, dust removal and coal saving, but their effects are not significant enough. Most of them have low desulfurization, dust removal and coal saving efficiency, slag carbon content and soot concentration. larger
In addition, the additives added to the boiler coal contain a large amount of sodium salt, iron oxide or manganese dioxide, which will reduce the melting point of fly ash and increase the coking of the boiler due to the increase in furnace temperature. the occurrence of the accident

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The participating materials selected for the formulation are:

[0055] Methanol 15% Potassium Permanganate 5%

[0056] Diethyl ether 10% Potassium chlorate 15%

[0057] Tween (80) 5% Potassium dichromate 15%

[0058] Quicklime 5% Water 30%

[0059] The production process is as follows: first, add 5 kg of quicklime to 2 kg of water to make 7 kg of lime milk; heat the remaining 30-2 = 28 kg of water to 65°C-70°C for use; add 5 kg of potassium permanganate, Add 15 kg of potassium chlorate and 15 kg of potassium dichromate to the above 28 kg of hot water at 65°C to 70°C, and stir evenly with a mechanical mixer for 15 minutes to make an aqueous solution; then mix the prepared aqueous solution with 15 kg of methanol and 5 kg Mix Tween-80 with a blender for 20 minutes, then mix with 7 kg of lime milk, stir evenly with a blender for 20 minutes to form a mixed solution, finally add 10 kg of ether, stir for 10 minutes with a blender, and place at 30°C 1.5 hours of thermal ins...

Embodiment 2

[0061] The participating materials selected for the formulation are:

[0062] Methanol 20% Potassium Permanganate 4%

[0063] Diethyl ether 5% Potassium chlorate 16%

[0064] Tween (80) 4% Potassium dichromate 16%

[0065] Quicklime 6% Water 29%

[0066] The production process is as follows: first, add 6 kg of quicklime to 2.4 kg of water to make 8.4 kg of lime milk; heat the remaining 29-2.4 = 26.6 kg of water to 65°C-70°C for use; add 4 kg of potassium permanganate, potassium chlorate 16 kg and 16 kg of potassium dichromate were added to the above-mentioned 26.6 kg of hot water at 65°C to 70°C, uniformly stirred by a mechanical mixer to make an aqueous solution, and then the prepared aqueous solution was mixed with 20 kg of methanol and 4 kg of Tween -80 mixed, then stirred with a mixer for 10 minutes, mixed with 8.4 kg of lime milk, stirred evenly with a mixer for 20 minutes, and finally added 5 kg of ether, then stirred evenly with a mixer for 10 minutes, and placed in ...

Embodiment 3

[0068] The participating materials selected for the formulation are:

[0069] Methanol 16% Potassium Permanganate 6%

[0070] Diethyl ether 9% Potassium chlorate 14%

[0071] Tween-80 6% Potassium dichromate 14%

[0072] Quicklime 4% Water 31%

[0073] The production process is as follows: first add 4 kg of quicklime to 1.6 kg of water to make 5.6 kg of lime milk, and heat the remaining 31-1.4 = 29.4 kg of water to 65 ° C ~ 70 ° C for use: 6 kg of potassium permanganate, potassium chlorate Add 14 kg of potassium dichromate and 14 kg of potassium dichromate into the above-mentioned 29.4 kg of hot water at 65°C to 70°C, stir evenly with a mechanical mixer to make an aqueous solution, and then mix the prepared aqueous solution with 16 kg of methanol and 6 kg of Tween Mix at -80, stir evenly with a mixer for 10 minutes, mix with 5.6 kg of lime milk, stir evenly with a mixer for 20 minutes, finally add 9 kg of ether, stir evenly with a mixer for 10 minutes, and place it in a 30°...

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Abstract

The invention provides a combustion-supporting desulfurating coal-saving additive which is used in the burning coal in boiler, the preparation of which is composed of 24-35 percent combustion improvers of methanol, aether, tween-80; 32-38 percent oxidants of potassium permanganate, potassium chlorate and potassium dichromate; 4-28 percent desulfurizer in which quicklime, potassium permanganate, potassium chlorate and potassium dichromate take part in; 18-22 percent anti-coking agent which contains potassium dichromate and quicklime; the rest is water, which complement the total volume of the additive to be 100 percent. The additive is prepared by adding water in the quicklime to produce lime cream; heating the water for acting as solution, after potassium permanganate, potassium chlorate and potassium dichromate are added into the solution and are stirred evenly; adding and mixing the methanol and tween-80 into the solution evenly, and then adding and mixing the lime cream into the solution evenly; finally adding and mixing the aether into the solution evenly; and preserving the heat for 1 hour. The invention can improve the desulfurization rate by 40 percent, improve the coal saving rate by 25 percent, and improve the thermal efficiency of the boiler by up to 5-10 percent; and can prevent the occurrence of boiler coking accident.

Description

technical field [0001] The invention belongs to a substance for improving combustion and treating solid fuel, or a substance added to the fuel, in particular to a combustion-supporting, desulfurization and coal-saving additive for coal-fired boilers. Background technique: [0002] In the current fuel technology, coal is an important energy source, which is widely used in many industrial boilers and power plant boilers. When existing boilers are heated and burned with coal, the coal generally cannot be completely burned, which consumes coal and emits a large amount of harmful gases, which is one of the main hazards causing air pollution. The carbon content of slag and fly ash is average All around 15-30%. Therefore, reducing the emission of harmful gases and improving the combustion efficiency of coal is a major issue facing scientific and technological workers. In order to reduce the emission of harmful gases and improve the efficiency of coal combustion, extensively improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/12C10L10/00
Inventor 周兴泽
Owner 周兴泽
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