PROCESS AND SYSTEM FOR DRYING AND HEAT TREATING MATERIALS

• US 20080110043A1
• Filed: 10/30/2007
• Published: 05/15/2008
• Est. Priority Date: 07/19/2004
• Status: Active Grant

• Current Assignee: 2292055 Ontario Inc. (Earthrenew Inc.)
• Original Assignee: Earthrenew Inc.
• Inventors: Fedkenheuer, Alvin W., Carin, Christianne, Gorbell, Brian N., Starosud, Alexander, Jonasson, John S.
• Granted Patent: US 7,975,398 B2
• Time in Patent Office: Days
• US Class Current: 34/487
• CPC Class Codes: F26B 19/005 Self-contained mobile devices, e.g. for agricultural produce movable devices with radiation means F26B3/28; small self-contained devices for drying objects at rest F26B9/003
• CPC Class Codes: F26B 2200/18 Sludges, e.g. sewage, waste, industrial processes, cooling towers
• CPC Class Codes: F26B 23/001 using waste heat
• CPC Class Codes: Y02P 70/10 Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

This invention discloses systems and methods for conversion of high moisture waste materials to dry or low moisture products for recycle or reuse. The equipment systems comprise a gas turbine generator unit (preferred heat source), a dryer vessel and a processing unit, wherein the connection between the gas turbine and the dryer vessel directs substantially all the gas turbine exhaust into the dryer vessel and substantially precludes the introduction of air into the dryer vessel and wherein the processing unit forms the dried material from the dryer vessel into granules, pellets or other desired form for the final product. Optionally, the systems and methods further provide for processing ventilation air from manufacturing facilities to reduce emissions therefrom.

Claims

1-40. -40. (canceled)

41. A method for producing a dried product from an inorganic waste material feedstock comprising:

operating a gas turbine generator to produce electricity and exhaust gases;

contacting the exhaust gases with the waste material feedstock having a moisture content of at least about 30% by weight, in a dryer vessel for a contact time sufficient to produce a dried inorganic material having a moisture content less than about 20% by weight; and

processing and forming the material into a granular, pellet or prill form of product suitable for conventional handling, transport or use.

42. A method according to claim 41 wherein the waste material feedstock comprises a moisture content of at least about 50% by weight.

43. A method according to claim 42 wherein the moisture content is at least about 70% by weight.

44. A method according to claim 41 wherein the dried material comprises a moisture content less than about 15% by weight.

45. A method according to claim 41 wherein the product comprises a moisture content less than about 10% by weight.

46-61. -61. (canceled)