Daniel C 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.

US Patent:

51958872, Mar 23, 1993

Filed:

Sep 10, 1991

Appl. No.:

7/756855

Inventors:

Charles R. Peterson - Catheys Valley CA
Gregory M. Peterson - Byron CA
Daniel C. Hopper - Kingman AZ
Trudy J. Weichlein - Cathey's Valley CA

International Classification:

F23G 520

US Classification:

432 14

Abstract:

A high throughput apparatus and process for thermal remediation of soil contaminated with volatile organic compounds has a dryer with a high capacity heat source to volatilize and combust the compounds contained in a first lot of soil. The remediated soil is discharged and cooled. Hot gases and fines formed are drawn into a second dryer with an ignition source where a second lot of soil is used to cool the hot gases/fines mixture. A particulate control chamber is used to remove at least 75% of the fines from the gas/fines mixture. Gases containing uncombusted volatile organic compounds are directed back to the primary dryer for additional exposure to heat in order to complete combustion. Additional separation of the fines from gases is achieved in a baghouse.