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Sintering flue gas denitrifying agent and preparation method thereof

A technology for sintering flue gas and denitrification agent, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of easy loss of activity, long running time, low denitration efficiency, etc., and achieve the effect of reducing costs

Inactive Publication Date: 2016-12-07
HEFEI TIANXIANG ENVIROMENT PROJECT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing problems of low flue gas denitrification efficiency and easy loss of activity, the present invention proposes a sintered flue gas denitrification agent, which has high denitrification efficiency and long running time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A sintering flue gas denitration agent, calculated by weight percentage, includes the following raw materials:

[0020] 15% of sludge, 7% of fly ash, 0.8% of ammonium carbonate, 0.8% of lanthanum nitrate, 0.06% of phosphorus oxide, 20% of pyrolusite powder, and the balance is water

[0021] The preparation method comprises the following steps:

[0022] Weigh the sludge, fly ash, ammonium carbonate, lanthanum nitrate, pyrolusite powder and water according to the ratio, and then mix and stir until a viscous material is formed.

Embodiment 2

[0024] A sintering flue gas denitration agent, calculated by weight percentage, includes the following raw materials:

[0025] 10% of sludge, 5% of fly ash, 0.5% of ammonium bicarbonate, 0.5% of lanthanum nitrate, 0.02% of phosphorus oxide, 15% of pyrolusite powder, and the balance is water. .

[0026] The preparation method comprises the following steps:

[0027] Weigh the sludge, fly ash, ammonium bicarbonate, lanthanum nitrate, phosphorus oxide pyrolusite powder and water according to the ratio, and then mix and stir until a viscous material is formed.

Embodiment 3

[0029] A sintering flue gas denitration agent, calculated by weight percentage, includes the following raw materials:

[0030] 12% of sludge, 7% of fly ash, 0.8% of ammonium chloride, 0.6% of lanthanum nitrate, 0.04% of phosphorus oxide, 18% of pyrolusite powder, and the balance is water.

[0031] The preparation method comprises the following steps:

[0032] Weigh the sludge, fly ash, ammonium chloride, lanthanum nitrate, phosphorus oxide pyrolusite powder and water according to the ratio, and then mix and stir until a viscous material is formed.

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Abstract

The invention provides a sintering flue gas denitrifying agent and a preparation method thereof. The sintering flue gas denitrifying agent is prepared from the following raw materials in percentage by weight: 10-20 percent of sludge, 5-10 percent of pulverized fuel ash, 0.5-1 percent of ammonium salt, 0.5-1 percent of lanthanum nitrate, 0.02-0.1 percent of phosphorus oxide, 15-30 percent of pyrolusite powder and the balance of water. The preparation method comprises the following steps: weighing the sludge, pulverized fuel ash, ammonium salt, lanthanum nitrate, phosphorus oxide, pyrolusite powder and water according to proportion; and mixing and stirring to form a pasty material. The denitrifying agent is high in denitrification efficiency and long in operation time.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment, and in particular relates to a sintering flue gas denitration agent and a preparation method thereof. Background technique [0002] Common sinter flue gas desulfurization and denitrification methods are step-by-step methods, that is, denitrification and desulfurization are carried out step by step, such as the method of combining SCR denitrification with limestone / lime / gypsum wet method, the method of combining SCR denitrification with lime circulating fluidized bed, etc. It is well known that the step-by-step method has large investment, high operating costs, large land occupation, and is not suitable for the temperature environment of sintering flue gas. Therefore, some technicians in this field have devoted themselves to researching a method for synchronous desulfurization and denitrification of sintering flue gas, and achieved certain results. , such as activated carbon dry desulfu...

Claims

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Application Information

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IPC IPC(8): B01D53/56B01D53/86
CPCB01D53/56B01D53/8625B01D2251/70B01D2251/80B01D2255/2073B01D2257/404B01D2258/0283
Inventor 周玉祥
Owner HEFEI TIANXIANG ENVIROMENT PROJECT
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