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Coal sulfur-fixing flame accelerator and preparation method thereof

A technology of a combustion accelerator and a combination of combustion accelerators is applied in the field of coal sulfur fixation combustion accelerator and its preparation, which can solve the problems of poor sulfur fixation effect and high cost, and achieves alleviating environmental protection pressure, high use efficiency, and reduction of flue gas emissions. Effect

Active Publication Date: 2014-07-02
SHIJIAZHUANG XINBANGER ENERGY SAVING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a coal sulfur-fixing and combustion-accelerating agent to solve the problems of poor sulfur-fixing effect and high cost in the application of desulfurization technology in coal combustion furnaces, and to improve the combustion-promoting effect at the same time

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  • Coal sulfur-fixing flame accelerator and preparation method thereof
  • Coal sulfur-fixing flame accelerator and preparation method thereof
  • Coal sulfur-fixing flame accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1 Preparation example of coal sulfur fixation combustion accelerator

[0042] 1. Prepare materials according to the following components and mass ratio: 20 parts of alumina, 15 parts of iron oxide, 10 parts of magnesium oxide, 5 parts of silicon oxide, 8 parts of aluminum humate, 8 parts of magnesium humate, coal powder 20 parts, 3 parts of sodium hydroxide, 1 part of potassium oxide, and 1 part of calcium hydroxide.

[0043] 2. Preparation method:

[0044] (1) Mix the above components and stir evenly;

[0045] (2) Grinding the mixture obtained in step (1) into a fine powder of 160 mesh;

[0046] (3) Divide the fine powder obtained in step (2) into separate packages.

Embodiment 2~4

[0047] Embodiment 2~4 preparation example of coal sulfur fixation combustion accelerator

[0048] 1. Prepare materials according to the composition and mass parts proportioning in Table 1:

[0049] Table 1 Embodiment 2~4 components and proportioning

[0050]

[0051] 2. Preparation method: except that the number of meshes is different and shown in Table 2, the others are the same as in Example 1.

[0052] Table 2 Example 2~4 fine powder mesh number

[0053]

[0054] Embodiment 5~7 and comparative example 1~5

[0055] Sulfur-fixing treatment: adopt the coal-sulphur-fixing combustion accelerator prepared in Example 1, Example 2, listed product 1 or listed product 2 to carry out sulfur-fixed treatment on coal, the method is as follows:

[0056] Mix the above-mentioned coal sulfur-fixing combustion accelerator evenly into the coal before burning coal into the furnace, then add a mixture of calcium acetate and calcium hydroxide, and burn it. The mixed solution concentrati...

Embodiment 8

[0060]Example 8 Combustion promotion and sulfur fixation effect test

[0061] Taking the listed product 1 and the listed product 2 circulating in the market as a comparison, the percentage content of the coal slag after coal combustion in Examples 5 to 7 in the coal before combustion and the total sulfur content in the coal slag were measured.

[0062] The determination method is as follows:

[0063] 1. Collect the coal slag after combustion of Examples 5-7, Comparative Example 1, Comparative Example 2 and Comparative Example 4, and calculate the weight percentage of coal slag in the coal before combustion.

[0064] 2. Take the above-mentioned ash samples, and measure the total sulfur content in them according to the method stipulated in the national standard GB / T214 (the weight percentage of all forms of sulfur in the cinder).

[0065] The measurement results are shown in Table 4.

[0066] Table 4 Determination results of percentage content of cinder and total sulfur conten...

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Abstract

The invention relates to a coal sulfur-fixing flame accelerator. The coal sulfur-fixing flame accelerator is composed of a first flame acceleration composite agent, a second flame acceleration composite agent and a sulfur-fixing composite agent, wherein the first flame acceleration composite agent is composed of 18-20 parts of alumium oxide, 12-15 parts of ferric oxide, 8-10 parts of magnesium oxide and 4-5 parts of silicon oxide; the second flame acceleration composite agent is composed of 18-20 parts of pulverized coal, 3 parts of sodium hydroxide, 1 part of potassium oxide and 1 part of calcium hydroxide; the sulfur-fixing composite agent is composed of 6-8 parts of alumium humate and 6-8 parts of magnesium humate. The coal sulfur-fixing flame accelerator has the characteristic of realizing sulfur fixation, smoke reduction, flame acceleration, and coke and scale removal of high-sulfur coal in a coal-fired furnace, and thus can be widely applied to a pulverized coal furnace, a boiling furnace, coal throwing furnace, a chain furnace and a rotary kiln, and further is capable of realizing sulfur removal and sulfur fixation of the high-sulfur coal in the furnace and reaching the purposes of clean combustion and smoke emission reduction.

Description

technical field [0001] The invention relates to the field of coal application, in particular to a coal sulfur-fixing combustion accelerator and a preparation method thereof. Background technique [0002] my country is a developing country that uses coal as its main energy source. Industrial production and residents' lives depend on coal consumption. However, coal combustion produces a large amount of sulfur dioxide, which causes serious pollution to the environment. In order to solve this problem, a variety of desulfurization technologies have emerged in the industry, including desulfurization before combustion, desulfurization in the furnace, and flue gas desulfurization after combustion. [0003] In-furnace desulfurization technology is to add a sulfur-fixing agent in the furnace to make the sulfur dioxide produced in the coal combustion process directly react with the sulfur-fixing agent and be solidified, so as to reduce the release of sulfur dioxide. However, for a lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 董建敏韩锦德范志斌冯红霞
Owner SHIJIAZHUANG XINBANGER ENERGY SAVING TECH CO LTD
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