How do scrubbers work? To answer this question, we need only look to a critical part of Earth’s natural pollution control system: how rain cleans the lower atmosphere. Obviously, this is most evidenced by the freshness of the air following a rainstorm. The simplicity of spraying water into a gas stream to remove a relatively high percentage of contaminants has contributed to scrubbers’ extensive use within industry since the early 1900s. Heumann and Subramania (1997) point out that “most pollution control problems are solved by the selection of equipment based upon two simple questions … (1) will the equipment meet the pollution control requirements? and (2) which selection will cost the least?”
How are scrubbing systems capabilities evaluated? They are evaluated based on empirical
relationships, theoretical models, and pilot scale test data. Two important parameters in the design and operation of wet scrubbing systems as a function of the process being controlled are dust properties and exhaust gas characteristics. Particle size distribution is the most critical parameter in choosing the most effective scrubber design and determining the overall collection efficiency.
In operation, scrubbers are considered universal control devices because they can control particulate and/or gaseous contaminants. Numerous types of scrubbers are available, including wet scrubbers, wet–dry scrubbers, and dry–dry scrubbers. Scrubbers use chemicals to accomplish contaminant removal, whereby the gaseous contaminants are absorbed or converted to particles, then wasted or removed from the stream.
How do scrubbers work? To answer this question, we need only look to a critical part of Earth’s natural pollution control system: how rain cleans the lower atmosphere. Obviously, this is most evidenced by the freshness of the air following a rainstorm. The simplicity of spraying water into a gas stream to remove a relatively high percentage of contaminants has contributed to scrubbers’ extensive use within industry since the early 1900s. Heumann and Subramania (1997) point out that “most pollution control problems are solved by the selection of equipment based upon two simple questions … (1) will the equipment meet the pollution control requirements? and (2) which selection will cost the least?”
How are scrubbing systems capabilities evaluated? They are evaluated based on empirical
relationships, theoretical models, and pilot scale test data. Two important parameters in the design and operation of wet scrubbing systems as a function of the process being controlled are dust properties and exhaust gas characteristics. Particle size distribution is the most critical parameter in choosing the most effective scrubber design and determining the overall collection efficiency.
In operation, scrubbers are considered universal control devices because they can control particulate and/or gaseous contaminants. Numerous types of scrubbers are available, including wet scrubbers, wet–dry scrubbers, and dry–dry scrubbers. Scrubbers use chemicals to accomplish contaminant removal, whereby the gaseous contaminants are absorbed or converted to particles, then wasted or removed from the stream.
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