Method and apparatus for controlling acid gas emissions from...

Details Method and apparatus for controlling acid gas emissions from... Method and apparatus for controlling acid gas emissions from...

2011-08-23

2011-08-23

Duong, Tom (Department: 1774)

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

Reexamination Certificate

active

08003057

ABSTRACT:
A method and apparatus for controlling emissions of acid forming gases such as sulfur dioxide from cement plants is disclosed. Gaseous effluent from the cement plant pyroprocessing chamber is routed to the plant's raw mill to heat and dry the feed meal used in cement production. When the raw mill is in operation microfine lime particles are sprayed into the raw mill using a nozzle system. The spraying of hydrated lime into the raw mill scrubs acid forming gases in the process gaseous effluent. When the raw mill is not operational, microfine lime is sprayed into a gas conditioning tower that is also used to reduce the temperature of the effluent gases to facilitate efficient collection of dust particles prior to emission of the cleansed effluent flow into the atmosphere.

REFERENCES:
patent: 5814288 (1998-09-01), Madden et al.

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