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Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof

A blasting pill and coal-burning technology, which is applied in the field of coal combustion accelerants, achieves the effects of saving coal pollutant emissions, reducing emissions, and reducing pollutant emissions

Inactive Publication Date: 2012-08-22
QINGYUAN WEIERXIN CHEM BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the various combustion accelerants disclosed in the past can play a certain combustion-supporting effect on coal, they can only work on the surface of coal, and cannot promote the incomplete combustion of coal inside to be exposed to the air.

Method used

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  • Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof
  • Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A coal-fired oxygen-increasing combustion-supporting blasting pellet is prepared by the following steps:

[0046] (1) Take 25% calcium nitrate, 10% magnesium nitrate, 5% barium nitrate, 1% lanthanum nitrate, 15% sodium nitrate, 20% potassium chlorate, 10% manganese dioxide, 4% potassium permanganate, 5% montmorillonite Soil and 5% diatomaceous earth are evenly mixed, and are extruded into small particles with a diameter of 2cm by a small-scale pellet machine; the percentage is the percentage of the total mass of the small particle raw materials;

[0047] (2) Mix kaolin and polyacrylamide at a mass ratio of 9:1, add water and mix thoroughly, and use it as the outer coating of small particles; the amount of water used is the sum of the mass of kaolin and polyacrylamide;

[0048] (3) Wrap the small particles with an outer coating, the thickness of the outer coating is about 2 mm, and dry at 80°C to obtain a coal-burning, oxygen-increasing, combustion-supporting blasting pe...

Embodiment 2

[0052] A coal-fired oxygen-increasing combustion-supporting blasting pellet is prepared by the following steps:

[0053] (1) Take 20% calcium nitrate, 10% magnesium nitrate, 5% barium nitrate, 1% lanthanum nitrate, 20% sodium nitrate, 20% potassium chlorate, 10% manganese dioxide, 4% potassium permanganate, 5% montmorillonite Soil and 5% diatomite are mixed evenly, and extruded into small particles with a diameter of 3cm by a small pellet machine; the percentages are the percentages of the total mass of the small particle raw materials;

[0054] (2) Mix kaolin and polyacrylamide at a mass ratio of 8:1, add water and mix thoroughly, and use it as the outer coating of small particles; the amount of water used is the sum of the mass of kaolin and polyacrylamide;

[0055] (3) Wrap the small particles with an outer coating, the thickness of the outer coating is about 2.5 mm, and dry at 80°C to obtain a coal-burning, oxygen-increasing, combustion-supporting blasting pellet.

[0056...

Embodiment 3

[0059] A coal-fired oxygen-increasing combustion-supporting blasting pellet is prepared by the following steps:

[0060] (1) Take 15% calcium nitrate, 10% magnesium nitrate, 10% barium nitrate, 3% cerium nitrate, 20% sodium nitrate, 20% potassium chlorate, 10% manganese dioxide, 4% potassium permanganate, 5% Mongolian The desoiled and 3% diatomaceous earth are mixed evenly, and extruded into small particles with a diameter of 1.5cm by a small pellet machine; the percentages are the percentages of the total mass of the small particle raw materials;

[0061] (2) Mix kaolin and polyacrylamide at a mass ratio of 9:1, add water and mix thoroughly, and use it as the outer coating of small particles; the amount of water used is the sum of the mass of kaolin and polyacrylamide;

[0062] (3) Wrap the small particles with an outer coating, the thickness of the outer coating is about 1 mm, and dry at 70°C to obtain a coal-burning, oxygen-increasing, combustion-supporting blasting pellet....

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Abstract

The invention discloses a fuel coal oxygen-increasing combustion-supporting explosion pill as well as a preparation method and application thereof. The fuel coal oxygen-increasing combustion-supporting explosion pill is composed of an external coating and small combustion-supporting particles, wherein the small combustion-supporting particles are wrapped by the external coating; the external coating consists of kaolin and a high molecular polymer at a mass ratio of (1-50):1; and the small combustion-supporting particles are formed by performing coextrusion on calcium nitrate, magnesium nitrate, barium nitrate, rare-earth elements, sodium nitrate, potassium nitrate, potassium chlorate, manganese peroxide, potassium permanganate, montmorillonite and kieselguhr. The fuel coal oxygen-increasing combustion-supporting explosion pill disclosed by the invention can be directly mixed with coal, is convenient in use, and is suitable for coal combustion in industrial boilers, boilers in power stations, steam boilers, kilns and the like. By utilizing the fuel coal oxygen-increasing combustion-supporting explosion pill disclosed by the invention, the desulfurization percent reaches 88%, the standard coal saving rate is 12.9%, the boiler thermal efficiency is improved by 11.2%, the carbon content of slags is reduced by 11.4%, and decoking, smoke abatement and corrosion inhibition reach more than 90%, so that the fuel coal oxygen-increasing combustion-supporting explosion pill can achieve a combined action of saving coal and reducing the pollutant emission.

Description

technical field [0001] The present invention relates to a coal combustion-supporting agent, in particular to a coal-burning oxygen-increasing combustion-supporting blasting shot and its preparation method and application. Briquette stove. Background technique [0002] my country's annual coal consumption has reached more than 600 million tons, and industrial coal combustion has solved about 70% of my country's energy demand. Among the series of problems in the coal-fired industry at present, the most prominent one is the low calorific value of coal (medium-high sulfur coal and high-sulfur coal with a sulfur content of more than 2% in coal in my country account for about 1 / 3 of the total reserves). During the combustion process of coal, due to its poor quality, the combustion is not sufficient, which makes the temperature of the furnace lower, the ignition point is high, it is not easy to catch fire, the heat capacity is large, and it is not easy to transfer heat. The basic...

Claims

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Application Information

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IPC IPC(8): C10L9/10
Inventor 陈超云潘伟强
Owner QINGYUAN WEIERXIN CHEM BUILDING MATERIALS