The term refers to a specialized device designed to remove sulfur compounds from various fluids or gases. It is commonly used in industrial processes where there is a need to reduce the sulfur content in order to meet environmental regulations or to protect equipment from the corrosive effects of sulfur. The primary purpose of this equipment is to promote cleaner emissions and to minimize the impact of industrial activities on the environment.
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The development of such technology began as a response to increasing environmental concerns and regulatory standards regarding air quality. Initially, basic methods were employed to remove sulfur compounds, but as regulations became stricter and technology advanced, more efficient and sophisticated systems were developed. Over time, these systems have evolved to use a variety of physical and chemical processes to effectively remove sulfur from different industrial emissions.
In the industrial sector, the presence of sulfur can lead to several issues, including air pollution, acid rain, and the deterioration of infrastructure through corrosion. The use of these pumps is crucial in industries such as power generation, chemical manufacturing, and metal processing. By reducing sulfur emissions, industries can comply with environmental standards, protect the health of workers and the public, and extend the lifespan of their equipment. This makes the technology an essential component in modern industrial operations.
In a flue gas desulphurisation system (FGD), sulphur compounds are removed from the exhaust emissions of fossil-fuelled power stations. This is done by means of an industrial process through the addition of absorbents. This can remove up to 95 % of the sulphur dioxide from the flue gas, since the current threshold value for SO2 in the EU is 200 mg/Nm3 (Nm3 = normal cubic metre).
The wet process has become the main method of flue gas desulphurisation in large, fossil-fuelled power plants. In this method, the flue gases are steam-saturated with the absorbent in aqueous solution. Substances such as ammonia or sodium sulphite are used as absorbents; however the use of lime or limestone slurry (wet limestone scrubbing) is also widespread. The uncleaned flue gas is sprayed in a scrubber tower (absorber tower) with a mixture of water and limestone (scrubbing slurry), whereby most of the sulphur dioxide is bonded by chemical reaction.
See Fig. 1 Flue gas desulphurisation system
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After a number of chemical reactions, gypsum is finally produced in a suspension. After dewatering, this leaves gypsum with up to 10 % residual moisture, which provides a valuable product for the construction material industry.
The pumps used in the individual process stages are absorber circulating pumps (scrubber pumps, which - because of the high solids content and the aggressiveness of the fluid handled - are designed as non-clogging impeller pumps with special lining) and FGD auxiliary pumps (for lime
and gypsum slurries in duplex materials).
See Fig. 2 Flue gas desulphurisation system
The term refers to a specialized device designed to remove sulfur compounds from various fluids or gases. It is commonly used in industrial processes where there is a need to reduce the sulfur content in order to meet environmental regulations or to protect equipment from the corrosive effects of sulfur. The primary purpose of this equipment is to promote cleaner emissions and to minimize the impact of industrial activities on the environment.
The development of such technology began as a response to increasing environmental concerns and regulatory standards regarding air quality. Initially, basic methods were employed to remove sulfur compounds, but as regulations became stricter and technology advanced, more efficient and sophisticated systems were developed. Over time, these systems have evolved to use a variety of physical and chemical processes to effectively remove sulfur from different industrial emissions.
In the industrial sector, the presence of sulfur can lead to several issues, including air pollution, acid rain, and the deterioration of infrastructure through corrosion. The use of these pumps is crucial in industries such as power generation, chemical manufacturing, and metal processing. By reducing sulfur emissions, industries can comply with environmental standards, protect the health of workers and the public, and extend the lifespan of their equipment. This makes the technology an essential component in modern industrial operations.
In a flue gas desulphurisation system (FGD), sulphur compounds are removed from the exhaust emissions of fossil-fuelled power stations. This is done by means of an industrial process through the addition of absorbents. This can remove up to 95 % of the sulphur dioxide from the flue gas, since the current threshold value for SO2 in the EU is 200 mg/Nm3 (Nm3 = normal cubic metre).
The wet process has become the main method of flue gas desulphurisation in large, fossil-fuelled power plants. In this method, the flue gases are steam-saturated with the absorbent in aqueous solution. Substances such as ammonia or sodium sulphite are used as absorbents; however the use of lime or limestone slurry (wet limestone scrubbing) is also widespread. The uncleaned flue gas is sprayed in a scrubber tower (absorber tower) with a mixture of water and limestone (scrubbing slurry), whereby most of the sulphur dioxide is bonded by chemical reaction.
See Fig. 1 Flue gas desulphurisation system
After a number of chemical reactions, gypsum is finally produced in a suspension. After dewatering, this leaves gypsum with up to 10 % residual moisture, which provides a valuable product for the construction material industry.
The pumps used in the individual process stages are absorber circulating pumps (scrubber pumps, which - because of the high solids content and the aggressiveness of the fluid handled - are designed as non-clogging impeller pumps with special lining) and FGD auxiliary pumps (for lime
and gypsum slurries in duplex materials).
See Fig. 2 Flue gas desulphurisation system