Fire coal additive and preparation method thereof

A technology of coal-burning additives and combustion-supporting agents, which is applied in the direction of fuel additives, fuels, and solid fuels. The effect of SO2 emission and the convenience of mixing

Active Publication Date: 2012-12-19
BEIJING EURO & AMERICAN INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although most of the currently used coal-fired additives can play the role of energy-saving and combustion-supporting, there are still problems such as large amount of additives, insoluble in water, easy coking of coal-fired products, and unsatisfactory energy-saving and combustion-supporting effects. application is limited

Method used

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  • Fire coal additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The weight composition of raw material used is as follows:

[0032] 2 parts of magnesium chloride;

[0033] 3 parts sodium sulfate;

[0034] Potassium nitrate 3 parts;

[0035] Potassium permanganate 1 part;

[0036] 8 parts of sodium chlorate;

[0037] 8 parts of ethanolamine;

[0038] 7 parts of isopropanolamine;

[0039] 3 parts calcium hydroxide;

[0040] 4 parts of cerium nitrate;

[0041] Under normal temperature and pressure, the above materials are crushed through a 60-mesh sieve, mixed and dissolved in water of 8 times the weight, and stirred evenly to form a solution to obtain the coal-burning additive product 1 of the present invention.

Embodiment 2

[0043] The weight composition of raw material used is as follows:

[0044] 5 parts of magnesium chloride;

[0045] Sodium sulfate 8 parts;

[0046] Potassium nitrate 6 parts;

[0047] Potassium permanganate 5 parts;

[0048] Sodium chlorate 2 parts;

[0049] 4 parts of ethanolamine;

[0050] 3 parts of isopropanolamine;

[0051] 3 parts calcium hydroxide;

[0052] 4 parts of cerium nitrate;

[0053] Under normal temperature and pressure, the above materials are crushed through a 60-mesh sieve, mixed and dissolved in water 10 times the weight, and stirred evenly to form a solution to obtain the coal-burning additive product 2 of the present invention.

Embodiment 3

[0055] The weight composition of raw material used is as follows:

[0056] 4 parts of magnesium chloride;

[0057] Sodium sulfate 5 parts;

[0058] Potassium nitrate 4 parts;

[0059] Potassium permanganate 3 parts;

[0060] Sodium chlorate 6 parts;

[0061] 5 parts of ethanolamine;

[0062] 4 parts of isopropanolamine;

[0063] 6 parts of calcium hydroxide;

[0064] 6 parts of cerium nitrate;

[0065] Under normal temperature and pressure, the above materials are crushed through a 60-mesh sieve, mixed and dissolved in water of 10 times the weight, and stirred evenly to form a solution to obtain the coal-fired additive product 3 of the present invention.

[0066] The additive products obtained in Examples 1-3 of the present invention (the addition amount is 0.5%) are added to the coal fired boiler and the coal fired without the additive of the present invention is used under the same conditions in the same boiler, and the results of various combustion performance indica...

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PUM

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Abstract

The invention discloses a fire coal additive comprising the following components in parts by weight: 5-13 parts of coal residue modifier, 6-19 parts of oxidizer, 10-25 parts of sulphur fixing agent and 4-10 parts of catalyst, wherein, the coal residue modifier is composed of magnesium chloride and sodium sulfate; the oxidizer comprises potassium nitrate, potassium permanganate and sodium chlorate; the sulphur fixing agent comprises ethanolamine, isopropanolamine and calcium hydroxide; the catalyst is cerous nitrate. The invention also discloses a method for preparing the additive. The additive of the invention has three functions of catalysis combustion, reduction of pollutant discharge and maintaining of clean equipment, has less additive amount, simple preparation process and low cost, can be widely used in various coal-fired boilers, such as pulverized coal furnace, chain furnace and recirculation fluidized bed and the like.

Description

technical field [0001] The invention relates to a coal combustion additive and a preparation method thereof. Background technique [0002] Coal is the main energy source in our country and plays a very important role in our country's economic construction, accounting for more than 75% of the total energy consumption. Due to limited economic conditions, backward coal-fired technology and outdated equipment, the unit energy consumption in our country is several times that of developed countries, seriously affecting the effective utilization of coal in our country. In addition, in the process of development and application, especially when coal is burned to generate heat to convert chemical energy into heat energy, a large amount of pollutants are produced, which leads to the decline of my country's environmental quality, and the area of ​​acid rain in many areas continues to expand. Environmental protection has been included in the sustainable development strategy. For indus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10C10L10/04C10L10/00
Inventor 车春玲
Owner BEIJING EURO & AMERICAN INST OF SCI & TECH
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