The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2011
Filed:
Dec. 24, 2008
James J. Schwab, Napa, CA (US);
James J. Schwab, Napa, CA (US);
Envirocare International Inc., American Canyon, CA (US);
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.