Flue gas desulfurization catalyst and application thereof to flue gas desulfurization in decomposition furnace of novel dry-process cement kiln

A desulfurization catalyst and dry-process cement technology, which is applied in the direction of heterogeneous catalyst chemical elements, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of complex preparation methods and high preparation costs , achieve the effect of reducing SO2 concentration, easy operation and reducing SO2 emission

Active Publication Date: 2018-10-30
广东万引科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the defects of complicated preparation method and high preparation cost of the existing flue gas desulfurization catalyst, the primary purpose of the present invention is to provide a flue gas desulfurization catalyst

Method used

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  • Flue gas desulfurization catalyst and application thereof to flue gas desulfurization in decomposition furnace of novel dry-process cement kiln
  • Flue gas desulfurization catalyst and application thereof to flue gas desulfurization in decomposition furnace of novel dry-process cement kiln

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Experimental program
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Effect test

Embodiment 1

[0028] The mass percent of each component in the catalyst of this embodiment is: manganese slag 30% (solid waste slag produced by smelting metal manganese), nickel slag 10% (solid waste slag produced by smelting nickel-iron alloy), copper slag 30% (produced in copper smelting process) solid waste), steel slag 29.9% (solid waste generated in the steelmaking process), and cobalt oxide 0.1%. The mass percentages of the effective components in the catalyst are: 3.4% of manganese dioxide, 5.6% of magnesium oxide, 0.13% of cobalt oxide, 0.15% of copper oxide and 0.06% of nickel oxide. Mix evenly according to the mass percentage, and grind until the specific surface area is 500m 2 / kg to prepare the catalyst.

[0029] The product of this embodiment is used on a 5000t / d new dry process cement production line in Guangdong, SO in the flue gas 2 The actual monitoring concentration is 640mg / Nm 3 , after 10 minutes of adding 0.1 ton / h catalyst (0.03% of the mass of the raw meal) at the ...

Embodiment 2

[0031] The mass percent of each component in the catalyst of this embodiment is: manganese slag 40% (solid waste slag produced by smelting metal manganese), nickel slag 15% (solid waste slag produced by smelting nickel-iron alloy), copper slag 20% ​​(produced in copper smelting process) solid waste), steel slag 24.8% (solid waste generated in the steelmaking process), and cobalt oxide 0.2%. The mass percentages of the effective components in the catalyst are: 5.2% of manganese dioxide, 5.1% of magnesium oxide, 0.24% of cobalt oxide, 0.11% of copper oxide and 0.07% of nickel oxide. Mix evenly according to the mass percentage, and grind until the specific surface area is 500m 2 / kg to prepare the catalyst.

[0032] The product of this embodiment is used on a 5000t / d new dry process cement production line in Guangdong, SO in the flue gas 2 The actual monitoring concentration is 1030mg / Nm 3 , after adding 0.2 tons / h catalyst (0.06% of raw meal mass) for 10 minutes at the place ...

Embodiment 3

[0034] The mass percentages of each component in the catalyst of this embodiment are: manganese slag 50% (solid waste slag produced by smelting metal manganese), nickel slag 15% (solid waste slag produced by smelting nickel-iron alloy), copper slag 25% (produced in copper smelting process) Solid waste slag), steel slag 9.7% (solid waste slag produced in the steelmaking process), cobalt oxide 0.3%. The mass percentages of the active components in the catalyst are: 8.1% of manganese dioxide, 3.9% of magnesium oxide, 0.36% of cobalt oxide, 0.14% of copper oxide and 0.08% of nickel oxide. Mix evenly according to the mass percentage, and grind until the specific surface area is 500m 2 / kg to prepare the catalyst.

[0035] The product of this embodiment is used on a 5000t / d new dry process cement production line in Guangdong, SO in the flue gas 2 The actual monitoring concentration is 1480mg / Nm 3 , after adding 0.3 ton / h catalyst (0.09% of the mass of raw material) at the coal inje...

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Abstract

The invention belongs to the technical field of environmental protection, and discloses a flue gas desulfurization catalyst and the application thereof to flue gas desulfurization in a decomposition furnace of a novel dry-process cement kiln. The flue gas desulfurization catalyst comprises the following components in percent by mass: 30-60% of manganese slag, 10-42% of nickel slag, 20-40% of copper slag, 10-30% of steel slag and 0.1-0.5% of cobalt oxide, altogether 100%. The flue gas desulfurization catalyst is uniformly mixed and ground and is then added at a raw material mill, a kiln hoist or a decomposition furnace coal injection pipe, and the SO2 concentration of flue gas can meet the standard when the addition amount is only 0.01-0.1% of the mass of a cement raw material. CaO desulfurization in the decomposition furnace is fully used for achieving the flue gas desulfurization; the flue gas desulfurization catalyst is easy to produce, easy and convenient to use and low in cost, isespecially suitable for the desulfurization of cement kiln flue gas with medium and low sulfur emission, and has an important practical significance on solving the problems of resource utilization andenvironment pollution of a high-sulfur raw material in the cement industry.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a flue gas desulfurization catalyst and its application in flue gas desulfurization of a novel dry-process cement kiln decomposition furnace. Background technique [0002] SO 2 After entering the atmosphere, it is catalyzed and oxidized to form acid rain and falls to the ground, which in turn leads to soil acidification, impoverishment, building corrosion, and damage to the ecological balance of lake waters, etc., which has great destructive power to the environment. In addition, SO 2 It can aggravate diseases of the respiratory organs and have a serious impact on human health. Due to resource reduction and geographical restrictions, some cement plants have to use high-sulfur limestone and other raw materials, most of the cement plant flue gas SO 2 The concentration is seriously exceeded. It is urgent to reduce the emission of cement kiln flue gas....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01D53/90B01D53/50
CPCB01D53/8609B01D53/90B01D2258/0233B01J23/002B01J23/8892B01J2523/00B01J2523/17B01J2523/22B01J2523/72B01J2523/845B01J2523/847
Inventor 张同生吴畅陈新智韦江雄余其俊
Owner 广东万引科技股份有限公司
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