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Catalyst for improving desulfurization performance of calcium hydroxide

A technology of calcium hydroxide and catalysts, which is applied in the direction of metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., and can solve the problem of limiting the application range of dry desulfurization technology and low desulfurization efficiency , limit calcium hydroxide desulfurization performance and other issues, to achieve the effect of increasing the internal and external area, increasing the adsorption capacity of sulfur, and improving the stability

Pending Publication Date: 2020-07-03
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desulfurization efficiency of industrial calcium hydroxide is between 50-60% in dry desulfurization, and between 60-75% in semi-dry desulfurization. The lower desulfurization efficiency directly limits the desulfurization performance of calcium hydroxide , Limiting the scope of application of dry desulfurization technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The catalyst was prepared according to the following weight percentages: 5 kg of cerium oxide, 5 kg of zirconia, 15 kg of activator, 40 kg of carbide slag, and 35 kg of manganese ore waste slag, wherein the activator was waste slag of molten salt furnace.

[0015] Add the above-mentioned catalyst to industrial grade calcium hydroxide according to the ratio of 1%. Under the condition, by adding the catalyst, the amount of desulfurization agent calcium hydroxide was reduced by 22%, and the catalyst showed good reactivity.

Embodiment 2

[0017] The catalyst was prepared according to the following weight percentages: 10kg of cerium oxide, 10kg of zirconia, 15kg of activator, 30kg of carbide slag, and 35kg of manganese ore waste residue.

[0018] Add the above catalyst to industrial grade calcium hydroxide according to the ratio of 10%. Under the condition, by adding the catalyst, the amount of desulfurization agent calcium hydroxide was reduced by 32%, and the catalyst showed good reactivity.

Embodiment 3

[0020] The catalyst was prepared according to the following weight percentages: 6 kg of cerium oxide, 12 kg of zirconia, 20 kg of activator, 40 kg of carbide slag, and 22 kg of manganese ore waste residue.

[0021] Add the above catalyst to industrial grade calcium hydroxide according to the ratio of 10%. Under the condition, by adding the catalyst, the amount of desulfurization agent calcium hydroxide was reduced by 25%, and the catalyst showed good reactivity.

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PUM

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Abstract

The invention discloses a catalyst for improving the desulfurization performance of calcium hydroxide. The catalyst comprises the following components in percentage by weight: 10-20% of a catalytic component, 15-20% of an excitant, 30-40% of carbide slag and the balance being residues of manganese ores. The catalyst not only can improve the reaction rate of calcium hydroxide with SO2 and SO3, butalso can greatly improve the reaction sulfur capacity of calcium hydroxide and enhance the desulfurization performance of calcium hydroxide.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a catalyst for improving the desulfurization performance of calcium hydroxide. Background technique [0002] With the continuous development of our country's society, the domestic industry has begun to transform and upgrade, and the country's environmental protection requirements for the industrial field have become more stringent. In recent years, my country's environmental protection policies have continued to tighten, especially for SO in industrial exhaust 2 Emission requirements are becoming increasingly stringent. Today, all major industries have basically begun to implement "ultra-low emission" policies and regulations. SO 2 The emission value is basically controlled at 35mg / Nm 3 the following. [0003] There are many types of industries in my country and many types of production enterprises, and various desulfurization technologies are used...

Claims

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Application Information

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IPC IPC(8): B01J23/10B01D53/86B01D53/50
CPCB01J23/10B01J23/002B01D53/8609B01D2251/404B01D2251/604
Inventor 曲晓龙孙彦民苏少龙南军钟读乐李世鹏孟广莹
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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