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Composite combustion improver capable of removing sulfur and saltpeter

A technology of combustion accelerant and combustion agent, applied in the field of desulfurization and denitrification combustion accelerant, which can solve the problems of simultaneous denitrification, carbon fixation, high industrial salt consumption, low sulfur removal efficiency, etc., achieve good effect, improve the environment, The effect of increasing porosity

Active Publication Date: 2013-07-17
HUNAN MEIRUI SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The desulfurization reaction temperature is 400 degrees higher than that of MgO. It is only suitable for desulfurization when the combustion temperature is high. The adaptability is not wide. The calcium-sulfur ratio and desulfurization efficiency are not high. PCDDs, PCDFs) pollute the environment; and it can only remove sulfur alone, and does not have the effects of simultaneous denitrification and carbon fixation

Method used

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  • Composite combustion improver capable of removing sulfur and saltpeter
  • Composite combustion improver capable of removing sulfur and saltpeter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The composite desulfurization and denitration combustion accelerant of this embodiment is composed of the following components in weight percentage: 75% of dolomite powder, 10% of carbonamide, 3% of oxidant, 3% of metal combustion powder, 4% of pore-forming agent, and 5% of catalyst ;

[0037] In the dolomite powder, the mass content of MgO is 22%; the oxidizing agent is KClO 4 with LiClO 4 mixture of LiClO 4 with KClO 4 The mass ratio of the metal powder is 1:2; the metal powder combustion agent is Al powder; the pore-forming agent is NaHCO 3 with NH 4 HCO 3 A mixture of which NaHCO 3 with NH 4 HCO 3 The weight ratio of FeO and CuO is 2:1; the catalyst is a mixture of FeO and CuO, wherein the weight ratio of FeO and CuO is 1.5:1;

[0038]Add the composite desulfurization and denitration combustion accelerant equivalent to 2% of the weight of coal combustion into the coal block (the sulfur content of the coal block is 2%), crush together, and add 10% dextrin, a...

Embodiment 2

[0040] The composite desulfurization and denitration combustion accelerant of this embodiment is composed of the following components in weight percentage: 70% of dolomite powder, 12% of carbonamide, 4% of oxidant, 4% of metal combustion powder, 6% of pore-forming agent, and 4% of catalyst ;

[0041] In the dolomite powder, the mass content of MgO is 21.5%; the oxidizing agent is KClO 4 ; The metal powder combustion agent is Be powder; The pore-forming agent is NaHCO 3 ; The catalyst is Fe 2 o 3 .

[0042] Add the composite desulfurization and denitration combustion accelerant equivalent to 3% of the weight of coal to the coal block (the sulfur content of the coal block is 4.9%) and crush them together, and then add soft clay (kaolinite) equivalent to 30% of the weight of coal Loess), hand-made honeycomb coal, installed in a tunnel furnace, used for tobacco leaf baking, after testing, the sulfur removal rate is 92%, the denitrification rate is 78.6%, and the combustion eff...

Embodiment 3

[0044] The composite desulfurization and denitration combustion accelerant of this embodiment is composed of the following components in weight percentage: 72% of dolomite powder, 13% of carbonamide, 5% of oxidizing agent, 2% of metal combustion powder, 5% of pore-forming agent, and 3% of catalyst ;

[0045] In the dolomite powder, the mass content of MgO is 21.2%; the oxidant is LiClO 4 ; The metal powder combustion agent is Mg powder; the pore-forming agent is NH 4 HCO 3 ; The catalyst is V 2 o 5 .

[0046] Mix the composite desulfurization and denitration combustion accelerant of this embodiment with water to make a mixed solution with a mass concentration of 20%, spray it on the seam coal fuel with a sulfur content of 5.1%, and burn it in an indoor combustion furnace to remove The sulfur rate is 92.5%, the denitrification rate is 82%, and the combustion efficiency is increased by 22%.

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Abstract

The invention relates to a composite combustion improver capable of removing sulfur and saltpeter; wherein the composite combustion improver capable of removing sulfur and saltpeter is prepared by the following raw materials by weight percentage: 70-75% of dolomite powder, 10-15% of carbon polyamide, 3-5% of oxidant, 2-4% of metal powder incendiary agent, 4-8% of pore-forming agent, and 3-7% of catalyst. The sulfur fixing rate of the composite combustion improver capable of removing sulfur and saltpeter of the invention is more than or equal to 90%, the saltpeter removing rate is more than orequal to 78%, the dust removal and smoke removal effect are good; simultaneously, the urban waste is effectively recovered and used.

Description

technical field [0001] The invention relates to a combustion accelerant for desulfurization and denitrification, in particular to a composite desulfurization and denitrification accelerant. Background technique [0002] Energy conservation and emission reduction are related to the overall sustainable development of human society, as well as to human physical and mental health and quality of life. This work is being vigorously carried out both at home and abroad. China is the largest coal producer and consumer in the world today, and the sulfur dioxide discharged into the atmosphere from coal combustion smoke causes serious environmental pollution and harms humans, animals and plants. The current desulfurization and denitrification technology, according to the different stages of the desulfurization process in the coal combustion process, desulfurization technology can be divided into pre-combustion desulfurization (such as coal washing, etc.), desulfurization during combusti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L9/10
Inventor 肖春生邓学锋汪耀富陆中山肖汉乾曾中邓世雄何阳
Owner HUNAN MEIRUI SCI & TECH
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