Dry flue gas desulfurization method of belt conveying horizontal moving bed

A technology of dry flue gas desulfurization and horizontal movement, applied in the field of dry flue gas desulfurization, can solve the problems that it cannot be used around large cities, and the desulfurization efficiency cannot meet environmental protection requirements, and achieves the advantages of improved diffusion, simple operation, and low investment Effect

Pending Publication Date: 2021-11-30
薛援
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  • Abstract
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  • Claims
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Problems solved by technology

Generally speaking, dry desulfurization can achieve the least amount of water vapor emission, and can achieve heat emission at 100-200°C. The exhausted flue gas can diffuse at high altitude and contribute little to the pollutants on the ground, but the desulfurization efficiency cannot meet the environmental protection requirements. , can only be used in a limited way, that is, it can be used in areas far away from cities, and cannot be used around large cities

Method used

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  • Dry flue gas desulfurization method of belt conveying horizontal moving bed

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Embodiment

[0053] Two-stage flue gas vertical flow belt conveying horizontal moving bed desulfurization method

[0054] like figure 1 As shown, 1. Expressed as a bucket elevator 2. Expressed as a distribution bin 3. Expressed as a one-stage feed bin 4. Expressed as a two-stage feed bin 5. Expressed as a reactor 6. Expressed as a one-stage belt horizontal conveyor 7. Represented as two-stage belt horizontal conveyor 8. Represented as one-stage discharge bin 9. Represented as two-stage discharge bin 10. Represented as screening machine 11. Represented as mixer 12. Represented as mixing silo.

[0055] The flue gas flows vertically from top to bottom, and the desulfurization method of the horizontal moving bed is to use the surface of the carrier ball to carry 200 mesh Ca(OH)2 powder, and react with sulfur dioxide in the flue gas at 80-200°C to generate sulfuric acid Calcium, to achieve the purpose of desulfurization, after the flue gas enters the reactor (5), it first enters the first stag...

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Abstract

The invention discloses a process method for removing sulfur dioxide from boiler flue gas, coke oven flue gas, oil refining FCC (fluid catalytic cracking) regeneration flue gas and the like in hydrocarbon oxidative combustion, and a system for implementing the method. Therefore, the desulfurization process method disclosed by the invention has the advantages that the desulfurization efficiency and the emission suspended matter index can reach the special emission limit standard of atmospheric pollution of the Ministry of Environmental Protection, in addition, the method also has the characteristics of low water content of the discharged flue gas and high flue gas emission temperature, and effective support is provided for reducing the generation of atmospheric haze and high-altitude heat emission of the flue gas. The typical implementation scheme is as follows: a carrier ball loaded with calcium hydroxide particles is in full contact with vertically flowing flue gas through a moving bed reactor and desulfurization reaction is conducted. The carrier ball is moved horizontally by a belt conveyor. Concentration difference is formed between the desulfurizer and sulfur dioxide in flue gas, and it is guaranteed that the desulfurization effect meets the environment-friendly emission requirement.

Description

technical field [0001] The invention relates to a dry flue gas desulfurization method, and belongs to the technical field of desulfurization methods and systems for flue gas generated by oxidative combustion of hydrocarbons. Background technique [0002] The sulfides in various hydrocarbons are converted to SO after oxidative combustion reactions 2 form into the atmosphere. SO 2 It is one of the main sources of air pollution. With the continuous improvement of the country's environmental protection requirements, the SO discharged into the atmosphere 2 The content is required to be less than 10ppm. The methods currently used for industrial flue gas desulfurization mainly include dry desulfurization, semi-dry desulfurization and wet desulfurization. Semi-dry desulfurization and wet desulfurization have both achieved desulfurization efficiency to meet environmental protection emission requirements. Dry desulfurization cannot meet strict emission indicators due to desulfuri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/50B01D53/83
CPCB01D53/508B01D53/83B01D2258/0283B01D2251/404B01D2251/604
Inventor 薛援
Owner 薛援
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