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A normal temperature semi-dry circulating fluidized bed flue gas desulfurization system and method

A circulating fluidized bed and semi-dry technology, applied in the field of flue gas purification, can solve the problems of complex system flow and structure, high investment and high operating costs, low removal efficiency, etc., and achieve the problem of reducing flue gas SO2 escape, The effect of prolonging residence time and increasing surface area

Active Publication Date: 2017-06-13
清义(山西)新材料科技有限公司
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Problems solved by technology

[0004] In view of the problems of high investment and high operating costs caused by the complex system flow and structure of the existing room temperature semi-dry circulating fluidized bed flue gas desulfurization technology, as well as the low removal efficiency, the development of high-efficiency, low investment and operation and maintenance Low-cost desulfurization technology is still the direction of efforts of the majority of environmental workers

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  • A normal temperature semi-dry circulating fluidized bed flue gas desulfurization system and method

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Embodiment Construction

[0019] The principle, structure and working process of the present invention will be further described below in conjunction with the accompanying drawings.

[0020] figure 1 It is a structural schematic diagram of an embodiment of a normal-temperature semi-dry circulating fluidized bed flue gas desulfurization system provided by the present invention. The system includes a circulating fluidized bed reactor and a desulfurizing agent slurry preparation and delivery system; the circulating fluidized bed reactor includes a riser 1, a cyclone separator 2, a circulating material adding device 3 and a nozzle 10; the desulfurizing agent The slurry preparation and conveying system includes a quicklime bin 4, a metering control device 5, a slurry tank 6, a water supply pipe 7, a slurry filter 8 and a slurry pump 9; The slurry filter 8, the slurry pump 9 are connected to the nozzle 10, the nozzle 10 is arranged in the dense phase area of ​​the riser 1, and the material outlet of the cir...

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Abstract

A normal temperature semi-dry circulating fluidized bed flue gas desulfurization system and method relate to a method and system for removing sulfur oxides in flue gas discharged from combustion equipment. The present invention uses a circulating fluidized bed as a desulfurization reactor, which is characterized in that the slurry containing ultrafine desulfurizing agent particles is sprayed into the circulating fluidized bed reactor, and at the same time, circulating material particles are added into the circulating fluidized bed reactor to make the circulating fluidized bed reactor The circulating material particles in the fluidized bed reactor fully collide with the desulfurizer slurry, and the desulfurization reaction occurs. The invention can achieve the purpose of coupling the preparation of the desulfurizing agent with the desulfurizing reaction process and significantly improving the utilization rate of the desulfurizing agent. Compared with the existing semi-dry flue gas desulfurization technology, the present invention has the advantages of high desulfurization efficiency, simple system structure, low investment and operation and maintenance costs, and can be used in the flue gas purification process of industrial boilers and power plant boilers.

Description

technical field [0001] The invention relates to a device and method for purifying flue gas of combustion equipment, in particular to a system and method for flue gas desulfurization in a semi-dry circulating fluidized bed at normal temperature, belonging to the technical field of flue gas purification. Background technique [0002] A large number of pollutants (such as sulfur oxides, nitrogen oxides, and dust) produced by combustion equipment have caused great harm to the atmospheric environment and human health. Pollutant removal of coal-fired equipment has been highly valued by the whole society. The trend of global coal consumption increasing year by year is still very obvious, but various countries continue to formulate stricter emission regulations to achieve total emission control. For all coal-fired enterprises, they have or will face more serious investment in pollutant emission reduction. [0003] So far, more than 90% of coal-fired industrial boilers and power pl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50B01D53/96
Inventor 由长福
Owner 清义(山西)新材料科技有限公司
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