Title:
TEMPERATURE-CONTROLLED INCINERATOR DRYER GRATES
Document Type and Number:
WIPO Patent Application WO2004001289
Kind Code:
A3
Abstract:
Incinerator dryer grates with temperature control provided by two-phase steam. Very wet bulk refuse entering an incinerator sits on a grate before falling onto a hearth floor below. This drives off volatile hydrocarbons and allows drying. The grate may also provide combustion air. The drying process causes the moisture content of the refuse to fall below 50 percent where combustion may occur. Two-phase steam passes through separate channels in the grate to control its temperature. The oxygen-containing gas emanating from the grate into the combustion chamber may contain gaseous products of combustion, or flue gas, with or without air to make use of the former's heat and moisture content. When the flue gas contains chlorine, its temperature should, through the addition of cool air, fall within the range of 400° to 750° F. To avoid chlorine corrosion, blowers propelling the flue gas must either remain out of the gas stream entirely or should only contact the flue gas after cooled to this temperature range. For particulate or shredded refuse, a second grate staggered below the first achieves sufficient dwell time for the material to dry and lose its volatile hydrocarbons. A loader enters the incinerator to push the refuse onto the grate and limit the refuse' thickness so that the grate's gas can penetrate it.
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Inventors:
BASIC JOHN N SR (US)
Application Number:
PCT/US2003/018701
Publication Date:
February 17, 2005
Filing Date:
June 12, 2003
Export Citation:
Assignee:
BASIC J N SEN (US)
International Classes:
F23G5/00; F23G5/04; F23G5/44; F23G5/46; F23G5/50; F23H1/02; F23H3/02; F23H3/04; F23L5/02; (IPC1-7): F23G5/00; F23G5/44; F23G7/00; F23N5/00; F23B7/00; F26B3/00; F26B21/06; F26B17/00
Domestic Patent References:
| WO1996029544A1 | 1996-09-26 |
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