Normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and method

Abstract

The invention discloses a normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and a method, which relate to a method for removing sulfur oxides in flue gas discharged from a burning device and a system. The normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and the method use a circulating fluidized bed as a desulphurization reactor, and are characterized in that slurry with super fine desulfurizer particles is injected into a circulating fluidized bed reactor, circulating material particles are added into the circulating fluidized bed reactor simultaneously, and the circulating material particles in the circulating fluidized bed reactor and desulfurizer slurry are fully collided and contacted, and generate a desulfurization reaction. The normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and the method can achieve the purpose that desulfurizer equipment and desulfurization reaction process are coupled and the use rate of desulfurizer is obviously improved. Compared with existing semi-dry method flue gas desulphurization prior, the normal temperature semi-dry method circulating fluidized bed flue gas desulphurization system and the method have the advantages of high desulphurization efficiency, simple system structure and low investment and maintenance cost of operation, and can be used for flue gas purification process of industrial boilers and station 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...

AI Technical Summary

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

Images