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Title: Separation of particulate from flue gas of fossil fuel combustion and gasification

Abstract

The gas from combustion or gasification of fossil fuel contains fly ash and other particulates. The fly ash is separated from the gas in a plurality of standleg moving granular-bed filter modules. Each module includes a dipleg through which the bed media flows into the standleg. The bed media forms a first filter bed having an upper mass having a first frusto-conical surface in a frusto-conical member at the entrance to the standleg and a lower mass having a second frusto-conical surface of substantially greater area than the first surface after it passes through the standleg. A second filter media bed may be formed above the first filter media bed. The gas is fed tangentially into the module above the first surface. The fly ash is captured on the first frusto-conical surface and within the bed mass. The processed gas flows out through the second frusto-conical surface and then through the second filter bed, if present. The bed media is cleaned of the captured fly ash and recirculated to the moving granular bed filter. Alternatively, the bed media may be composed of the ash from the combustion which is pelletized to form agglomerates. The ash flows through the bed onlymore » once; it is not recycled. 11 figs.« less

Inventors:
; ;
Issue Date:
Research Org.:
Westinghouse Electric Corporation
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
516916
Patent Number(s):
5,653,181
Application Number:
PAN: 8-356,982
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA (United States) PTO; SCA: 540120; 010800; 010402; PA: EDB-97:120543; SN: 97001831590
DOE Contract Number:  
AC21-91MC27259
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 5 Aug 1997
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 01 COAL, LIGNITE, AND PEAT; GRANULAR BED FILTERS; FLY ASH; DESIGN; DEGASSING; FLUE GAS; FUEL GAS; OPERATION; COMBUSTORS; GAS GENERATORS; HOT GAS CLEANUP

Citation Formats

Yang, W.C., Newby, R.A., and Lippert, T.E. Separation of particulate from flue gas of fossil fuel combustion and gasification. United States: N. p., 1997. Web.
Yang, W.C., Newby, R.A., & Lippert, T.E. Separation of particulate from flue gas of fossil fuel combustion and gasification. United States.
Yang, W.C., Newby, R.A., and Lippert, T.E. Tue . "Separation of particulate from flue gas of fossil fuel combustion and gasification". United States.
@article{osti_516916,
title = {Separation of particulate from flue gas of fossil fuel combustion and gasification},
author = {Yang, W.C. and Newby, R.A. and Lippert, T.E.},
abstractNote = {The gas from combustion or gasification of fossil fuel contains fly ash and other particulates. The fly ash is separated from the gas in a plurality of standleg moving granular-bed filter modules. Each module includes a dipleg through which the bed media flows into the standleg. The bed media forms a first filter bed having an upper mass having a first frusto-conical surface in a frusto-conical member at the entrance to the standleg and a lower mass having a second frusto-conical surface of substantially greater area than the first surface after it passes through the standleg. A second filter media bed may be formed above the first filter media bed. The gas is fed tangentially into the module above the first surface. The fly ash is captured on the first frusto-conical surface and within the bed mass. The processed gas flows out through the second frusto-conical surface and then through the second filter bed, if present. The bed media is cleaned of the captured fly ash and recirculated to the moving granular bed filter. Alternatively, the bed media may be composed of the ash from the combustion which is pelletized to form agglomerates. The ash flows through the bed only once; it is not recycled. 11 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {8}
}