Title:
RAINING BED HEAT EXCHANGER AND METHODS OF USE
Document Type and Number:
WIPO Patent Application WO1999031450
Kind Code:
A3
Abstract:
A raining bed heat exchanger includes: a hollow stack; a feed inlet located near the top of the stack for introducing particulate material into the stack so that the material falls through the stack; a gas inlet located near the bottom of the stack for introducing rising gases into the stack so that the gases flow counter to the falling material; a plurality of baffles supported within the stack between the feed and gas inlets for retarding the falling material and prolonging its exposure to the gases; and a disengagement section located near the top of the stack for separating from the gases particulates entrained by the rising gases. The disengagement section includes a screen positioned within the stack and having a plurality of gaps through which the rising gases pass in order to sufficiently separate the entrained particulates. Alternatively, the disengagement section can include a filter media to separate the entrained particulates. Also, at least one of the baffles can include a hollow tube and refractory insulation surrounding the hollow tube. The heat exchanger can be connected to a cyclone to form a heat exchanger system that includes a flow generating mechanism adapted to continuously reintroduce particulates separated by the cyclone back into the heat exchanger.
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Inventors:
MCCLAINE ANDREW W
BREAULT RONALD W
LITKA ANTHONY F
BECKER FRED E
BREAULT RONALD W
LITKA ANTHONY F
BECKER FRED E
Application Number:
PCT/US1998/024878
Publication Date:
August 23, 2001
Filing Date:
November 23, 1998
Export Citation:
Assignee:
THERMO POWER CORP (US)
International Classes:
B01J8/00; B01J8/08; B01J8/12; C04B2/10; F27B15/00; F27D3/00; F27D13/00; F28C3/14
Foreign References:
| US4875919A | 1989-10-24 | |||
| US4289481A | 1981-09-15 | |||
| US5125943A | 1992-06-30 | |||
| US4256451A | 1981-03-17 | |||
| FR1151535A | 1958-01-31 |
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