Michael S Mcelroy

US Patent:

20090199507, Aug 13, 2009

Filed:

Sep 23, 2008

Appl. No.:

12/284689

Inventors:

Dave Winter - Mountain View CA, US
Michael McElroy - Los Altos CA, US

International Classification:

E06B 1/52

US Classification:

5274515

Abstract:

Methods and apparatus for replacing components, including doors, may include measuring devices, measurement processing steps, component cutting steps, painting and installation steps. Components to be replaced, such as doors, may be measured while still installed and the measurements directed to dimensions and components of the door frame rather than the dimensions of the door.

US Patent:

50842560, Jan 28, 1992

Filed:

Aug 9, 1990

Appl. No.:

7/565869

Inventors:

Michael W. McElroy - Los Altos CA
Roderick Beittel - Birmingham AL
Steven J. Bortz - Laguna Niguel CA
George R. Offen - Woodside CA

Assignee:

Electric Power Research Institute, Inc. - Palo Alto CA

International Classification:

B01J 800
C01B 1700

US Classification:

423244

Abstract:

A method is provided for reducing the sulfur content of exhaust (flue) gas from a combustion installation manufacturing process, or chemical process comprising the step of injecting dry powder alkali hydrate sorbent directly into intermediate temperature (800. degree. -1200. degree. F. ) combustion/process gases. The alkali hydrate sorbent reacts rapidly with the sulfur-containing gases in this temperature regime to produce primarily alkali sulfites. The unreacted portion of the sorbent largely remains in the form of an alkali hydrate and may react further with residual sulfur, especially in the presence of water, at lower temperatures. A novel combustion chamber is also provided having an injection means for injecting alkali hydrate sorbent into a combustion volume where the temperature is in the range of 800. degree. -1200. degree. F. , to cause a predetermined reaction of the alkali hydrate sorbent with SO. sub. 2 and the combustion gases to produce primarily alkali sulfites with the unreacted sorbent remaining substantially as alkali hydroxide.