Daniel B Hopper

US Patent:

7458325, Dec 2, 2008

Filed:

Nov 15, 2005

Appl. No.:

11/272803

Inventors:

Daniel C. Hopper - California City CA, US
Trudy J. Hopper - California City CA, US

Assignee:

Bio-Solids Remediation Corp. - Tehachapi CA

International Classification:

F23B 7/00

US Classification:

110341, 110226, 34128, 34129, 34180, 34169, 34132

Abstract:

A high throughput process and apparatus for thermal remediation of bio-solids, e. g. , bio-sludge from wastewater treatment plants, has a dryer with a high capacity heat source to volatilize and combust the compounds contained in a first lot of bio-solids. The thermally treated bio-solids are discharged and cooled. Hot gases and fines formed are drawn into a second dryer where a second lot of bio-solids are used to cool the hot gases/fines mixture. An exhaust cooling recirculating unit is used to further cool the gas/fines mixture and separate courser fines before entering the bag house. Additional separation of the fines from gases is achieved in a baghouse or other suitable device for separating fine particles from gas.