Multilevel drying and cooling integration technics of wet-type ammonia flue gas desulphurization offspring and its system

A cooling process and product technology, which is applied in the field of wet ammonia flue gas desulfurization product treatment, can solve problems such as easy bonding, and achieve the effects of reducing process costs, simplifying heating equipment, and short-term high-efficiency treatment

Inactive Publication Date: 2010-08-11
WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonium sulfate solid with a moisture content of about 10% is easy to stick and cannot directly enter the packaging process

Method used

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  • Multilevel drying and cooling integration technics of wet-type ammonia flue gas desulphurization offspring and its system
  • Multilevel drying and cooling integration technics of wet-type ammonia flue gas desulphurization offspring and its system
  • Multilevel drying and cooling integration technics of wet-type ammonia flue gas desulphurization offspring and its system

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Embodiment Construction

[0026] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0027] The multi-stage drying and cooling system for the wet ammonia flue gas desulfurization products shown in the figure is mainly composed of a multi-stage spiral tube drying device, a gas-solid separation device and an air cooling device.

[0028] The multistage spiral tube drying device includes a feed hopper 5 , a screw feeder 6 , a drying device cavity 10 and a multistage spiral tube 7 . The feed hopper 5 is connected to the inlet of the drying device cavity 10 through the screw feeder 6 arranged at the outlet of the bottom thereof. In this embodiment, three spiral drying pipes 7 are arranged in the drying device cavity 10 in a ladder shape, and each screw is dried. The surface of the pipe 7 is provided with a spiral blade 8, and each spiral drying pipe 7 is rotated by a motor, forming a three-stage spiral conveying structure. The feed h...

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Abstract

The invention relates to a multi-stage drying and cooling integration process of an ammonia flue gas desulfurization product and the system thereof. The process comprises the following steps: firstly, the elementary dehydrated desulfurization product is thrown in a multi-stage spiral tube drying device which is arranged in a ladder shape, a spiral drying tube is utilized to rotationally decentralize the desulfurization product, and thermal current is utilized to lead the desulfurization product to be fully dried to form drying particles; secondly, the drying desulfurization product particlesare separated from the thermal current, and then freezing air is utilized to dry the desulfurization product particles to below 40 DEG C in conformity to the packaging requirement. The system of the invention comprises a feed hopper, a spiral feeder, a drying device cavity, a multi-stage spiral tube drying device consisting of a plurality of spiral drying tubes, a gas-solid separating device consisting of a cyclone dust extractor cavity and a cyclone dust extractor air mechanism, and an air cooling device consisting of a cooler cavity, a cooler blower fan, a cloth bag and an air drying device. The process and the system have the advantages of compact structure, low energy consumption and low operating cost, and the moisture content percentage and the temperature of ammonium sulfate solid are controlled in the permitted range of the packaging process.

Description

technical field [0001] The invention relates to a wet-type ammonia flue gas desulfurization product treatment technology, in particular to a multi-stage drying and cooling process and system for wet ammonia flue gas desulfurization products. Background technique [0002] Flue gas desulfurization in coal-fired power plants is an important measure to control sulfur dioxide emissions and improve the quality of atmospheric environment in my country. The wet ammonia flue gas desulfurization process uses ammonia water as an absorbent to remove sulfur dioxide SO in flue gas. 2 Flue gas purification technology for pollutants such as pollutants. The absorbent of this technology is highly alkaline, and the absorption reaction is a gas-liquid or gas-gas reaction. It has the advantages of fast desulfurization reaction rate, complete reaction, and high utilization rate of the absorbent. For the desulfurization-based process, the wet ammonia desulfurization process has a simple system, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/50B01D53/78
Inventor 韩旭余福胜高翔鹏李雄浩徐尹生徐志安李瑞鑫朱敬
Owner WUHAN KAIDI ELECTRIC POWER ENVIRONMENTAL
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