High-efficiency environment-friendly coal synergistic agent

A synergist and environmental protection technology, applied in the field of coal synergist, high-efficiency and environmentally friendly coal synergist, can solve the problem of unusable catalyst products, improve safety and stability, add less amount, and reduce activation energy Effect

Inactive Publication Date: 2012-07-18
BEIJING HUAYE ZHONGKE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in order to ensure the combustion-supporting effect of the product on coal, this kind of catalyst product with a strong oxidant as the main body is only suitable for small industrial kilns and chain furnaces that do not have a high-temperature coal grinding stage before entering the furnace for combustion.
However, for large-scale combustion furnaces such as pulverized coal furnaces in thermal power plants, circulating fluidized bed furnaces, and rotary kiln furnaces in cement plants, which have a high-temperature coal grinding stage before entering the coal bunker, this catalyst product cannot be used.

Method used

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  • High-efficiency environment-friendly coal synergistic agent
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  • High-efficiency environment-friendly coal synergistic agent

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Experimental program
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Effect test

Embodiment 1～ Embodiment 12

[0019] Embodiment 1 to Embodiment 12: The following embodiments disclose a high-efficiency and environment-friendly coal synergist, which is prepared from raw materials in different parts by mass. The solutes are sequentially added into the deionized water according to the dose, and the mixture is uniformly stirred to obtain a high-efficiency and environment-friendly coal synergist.

[0020] See Table 1 and Table 2 for specific raw material preparation weight percentages.

[0021]

[0022] Table 1 Raw material preparation weight percentage of embodiment 1~embodiment 6

[0023]

[0024]

[0025] Table 2 Raw material preparation weight percentage of embodiment 7~embodiment 12

Embodiment 13

[0026] Example 13: This example discloses a high-efficiency and environmentally friendly coal synergist, which is prepared from the following raw materials in parts by mass: EDTA disodium salt 2-4%, EDTA tetrasodium salt 2 ~4%, sodium iron EDTA 3~6%, sodium copper EDTA 5~15%, sodium zinc EDTA 5~15%, sodium magnesium EDTA 1~6 %, sodium manganese edetate 1-6%, calcium sodium edetate 2-5%, hexamethylenetetramine 3-6%, nickel chloride 2-4%, the balance is deionized mixed with water. Add each solute into deionized water according to the dosage, stir and mix evenly, and then the high-efficiency and environment-friendly coal synergist can be prepared.

[0027] Use NETZSCH STA 409PC comprehensive thermal analyzer C20 to conduct comparative tests on raw coal and raw coal after adding this high-efficiency and environmentally friendly coal synergist. The test results are: after adding this high-efficiency and environment-friendly coal synergist, the coal combustion intensity is reduced...

Embodiment 14

[0028] Embodiment 14: Trial burning is carried out on a 20T (ton, the same below) steam furnace of a certain power plant. Calculate the steam production per ton of coal by using the coal consumption and the corresponding steam production, and calculate the coal saving rate of the high-efficiency and environmental protection coal synergist according to the steam production per ton of coal before and after adding the high-efficiency and environmental protection coal synergist.

[0029] Wherein, the high-efficiency and environment-friendly coal synergist is prepared by dissolving various solutes in deionized water according to the following mass percentages, and stirring evenly. The specific proportions are as follows: EDTA disodium salt 4%, EDTA tetrasodium salt 4%, EDTA iron sodium 3%, EDTA copper sodium 10%, EDTA Zinc Sodium EDTA 13%, Magnesium Sodium EDTA 2%, Manganese Sodium EDTA 5%, Calcium Sodium EDTA 2%, Hexamethylenetetramine 4%, Nickel Chloride 3%, 50% deionized water ...

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Abstract

The invention discloses a high-efficiency environment-friendly coal synergistic agent. The synergistic agent comprises one or more metal ion chelates. Furthermore, each metal ion chelate is edentate. The edentate is any one of EDTA (ethylene diamine tetraacetic acid) disodium salt, EDTA tetrasodium salt, EDTA ferrisodium, EDTA copper sodium, EDTA zinc sodium, EDTA magnesium sodium, EDTA manganese sodium and EDTA calcium sodium. The solutes dissolve in deionized water and are mixed uniformly, so that the high-efficiency environment-friendly coal synergistic agent is prepared. The high-efficiency environment-friendly coal synergistic agent takes the metal ion chelates as a catalyst main body, so as to greatly improve the safety and the stability in use, and ensure that the high-efficiency environment-friendly coal synergistic agent doesn't sublimate in a high-temperature coal milling stage and can be widely used in powder coal furnaces and circulating fluidized bed furnaces in large-scale fuel electric plants as well as rotary kilns in cement plants.

Description

technical field [0001] The invention relates to a coal synergist, in particular to a high-efficiency and environment-friendly coal synergist which uses a metal ion chelate as a catalyst body and will not fail after a high-temperature coal grinding stage, and belongs to the technical field of coal combustion. Background technique [0002] At present, there are mainly two theories on the mechanism of coal catalytic combustion, namely the oxygen transfer theory and the electron transfer theory. And no matter which theory involves the reaction active center formed by the catalyst or their decomposition products, the increase of the reaction active center will inevitably speed up and complete the combustion. In order to increase the number of reactive centers, it is necessary to increase the amount of catalyst used and to increase the surface area of ​​the catalyst. When the amount of catalyst is increased in a large amount, on the one hand, the use cost of the catalyst will be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 杨伟华
Owner BEIJING HUAYE ZHONGKE TECH DEV
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