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Packed Tower and Absorption

The main concentration gradient is established in the laminar region, so the mechanism of gas absorption by diffusion is a molecular diffusion. [Pg.223]

Control device vendors estimate that removal efficiencies range from 95 to 99%. [Pg.223]

Removal efficiencies for gas absorbers vary for each pollutant-solvent system and with the type of absorber used. Most absorbers have removal efficiencies in excess of 90%, and packed-tower absorbers may achieve efficiencies greater than 99% for some pollutant-solvent systems. The typical collection efficiency range is from 70 to greater than 99%. [Pg.224]

Packed-bed wet scrubbers are limited to applications in which dust loading is low, and collection efficiencies range from 50 to 95%, depending upon the application. Condensation scrubbers potentially offer a means of extending the removal efficiency of PM. [Pg.224]

The suitability of gas absorption as a pollution control method is generally dependent on the following factors (1) availability of suitable solvent (2) required removal efficiency (3) pollutant concentration in the inlet vapor (4) capacity required for handling waste gas and (5) recovery value of the pollutant(s) or the disposal cost of the unrecoverable solvent. Packed-bed scrubbers are typically used in the chemical, aluminum, coke and ferro-alloy, food and agriculture, and chromium electroplating industries. [Pg.224]


See other pages where Packed Tower and Absorption is mentioned: [Pg.446]    [Pg.222]   


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