Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method

A technology of rotary spray drying and sintering flue gas, applied in waste heat treatment, combined device, lighting and heating equipment, etc., can solve the problems of high operating cost, long process flow, complex system, etc., to improve desulfurization efficiency and easy process operation. , the effect of promoting the application

Inactive Publication Date: 2010-09-15
SHANGHAI LIYI ENVIRONMENTAL PROTECTION ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet limestone method has a long process flow, complex system, large investment, large land occupation, and high operating costs. The semi-dry rotary spray method has many improvements over the wet limestone method, and has become one of the technologies used for sintering flue gas desulfurization.

Method used

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  • Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method
  • Dry ash wetting and recycling technology for desulfurizing sintered fume by rotary spraying and drying method

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Embodiment Construction

[0010] The process of the present invention will be further described according to the above-mentioned accompanying drawings.

[0011] The lime is prepared into a slurry by the lime slurry preparation device 8 and then pumped to the absorption tower top tank 4 for standby. The wetting water dosing device 10 communicates with the dry ash pipeline 9, and the dry ash pipeline 9 connects the dry ash bin 11 with the flue gas pipeline 3, and the dry ash enters the flue gas pipe after being properly humidified by the wetting water dosing device 10 Road 3 enters the absorption tower after being mixed with flue gas.

[0012] After the sintering flue gas is divided and treated, the low-sulfur flue gas is treated by the electrostatic precipitator 1 and then merged with the clean flue gas discharged from the absorption tower and discharged through the chimney. The high-sulfur flue gas is sent to the absorption tower by the spindle fan 2 through the flue gas pipeline 3, and the dry ash is...

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Abstract

The invention discloses dry ash wetting and recycling technology for desulfurizing sintered fume by a rotary spraying and drying method, which relates to the desulfurization technology for the sintered fume and is suitable for treating the sintered (pelletized) fume generated in a steel production process. In the process of the invention, wetted dry ash is directly added into the sintered fume for auxiliary cooling and adsorption for the fume, so the area occupied by technical equipment and construction cost are reduced; the effect is good; and desulfurization efficiency of the sintered fume is improved. The process of the invention is simple and convenient in operation and at least one fourth lower than the present desulfurization process in investment and construction cost and operating cost, and creates good economic benefit and environmental benefit.

Description

technical field [0001] The rotary spray drying sintering flue gas desulfurization dry ash wet recycling technology relates to the desulfurization treatment technology of the sintering flue gas, and is suitable for the purification treatment of the sintering (pellet) flue gas produced in the iron and steel production process. Background technique [0002] Iron and steel enterprises will emit a large amount of sintering flue gas during the production process, and the main pollutants in the sintering flue gas are particulate matter, SO 2 , NO X and dioxins. At present, the control and treatment of particulate matter in sintering flue gas is no longer a problem. At present, the main thing is to further improve the desulfurization effect of sintering flue gas and control and treat NO in flue gas. X and dioxins. [0003] Due to the generation of sintering flue gas and its own characteristics, it is impossible to directly use the desulfurization process and equipment of thermal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/96B01D53/50B01D50/00F27B21/08F27D17/00
CPCY02P10/25
Inventor 何申富凌索菲杨颺
Owner SHANGHAI LIYI ENVIRONMENTAL PROTECTION ENG TECH
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