Gas: heating and illuminating – Processes – Fuel mixtures
Patent
1991-06-28
1993-08-10
Kratz, Peter
Gas: heating and illuminating
Processes
Fuel mixtures
481981, 48DIG7, 48209, 110346, 210758, C10J 346
Patent
active
052344681
ABSTRACT:
A process for disposing of sewage sludge comprising the steps of, (1) dewatering the sewage sludge to produce amorphous sewage sludge having a solids content of about 28 to 50 wt. %; (2) heating said amorphous sewage sludge at about 150.degree. F. to 510.degree. F. in the absence of air for 3 seconds to 60 minutes and mildly shearing the sewage sludge, thereby producing a pumpable feed slurry of sewage sludge having a viscosity in the range of about 400 to 1500 centipoise and a higher heating value in the range of about 5000 to 9500 BTU/LB; and (3) burning said pumpable slurry from (2) in a partial oxidation gasifier, furnace, boiler, or incinerator to produce an effluent gas stream. In one embodiment, the effluent gas stream is cleaned and purified and non-contaminating fly-ash and slag are separated. The fly-ash may be mixed with the sewage sludge in the process to facilitate separation of water during pressing and to encapsulate the non-combustible materials in the sewage sludge. The encapsulated material will flow from the reaction zone as substantially inert molten slag. By this process, noxious sewage sludge may be disposed of without contaminating the environment.
REFERENCES:
patent: 3232728 (1966-02-01), Reynolds
patent: 3507788 (1970-04-01), Cole et al.
patent: 3524630 (1970-08-01), Marion
patent: 3687646 (1972-08-01), Brent et al.
patent: 3847564 (1974-11-01), Marion et al.
patent: 4052176 (1977-10-01), Child et al.
patent: 4443230 (1984-04-01), Stellaccio
patent: 4525175 (1985-06-01), Stellaccio
patent: 4762527 (1988-08-01), Beshore et al.
patent: 4801307 (1989-01-01), Muenger et al.
patent: 4933086 (1990-06-01), McMahon et al.
patent: 4983296 (1991-01-01), McMahon et al.
Perry's Chemical Engineers' Handbook, McGraw-Hill, Fourth Edition, 1963, pp. 19-50.
Brent Albert
Kratz Peter
O'Loughlin James J.
Texaco Inc.
LandOfFree
Process for utilizing a pumpable fuel from highly dewatered sewa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for utilizing a pumpable fuel from highly dewatered sewa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for utilizing a pumpable fuel from highly dewatered sewa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1722234