Power plants – Combustion products used as motive fluid
Patent
1976-02-20
1976-11-16
Bashore, S. Leon
Power plants
Combustion products used as motive fluid
60 3918B, 60 3912, 44 1R, 48203, 201 17, F02G 300, C10J 346
Patent
active
039915573
ABSTRACT:
Pulverized coal having a sulfur content of up to 2.5% is introduced into a gasification vessel together with air preheated to a temperature above 900.degree. F. The pulverized coal and preheated air react in the gasification vessel which is operated at temperatures in excess of 1800.degree. F. with a residence time of less than three seconds therein. The reaction between the concurrent downwardly flowing coal and air produces a product comprising partially gasified char entrained in a product gas comprising methane, hydrogen, hydrogen sulfide and oxides of carbon. The partially gasified low sulfur char entrained in the product gas is withdrawn from the gasifier and conducted to a waste heat boiler to provide steam as a source of energy for power generation. Thereafter, the low sulfur char is separated from the product gas and fed to a char storage hopper which maintains the char at a temperature above 900.degree. F. and preferably above 1100.degree. F. The product gas after being cooled to a temperature of 200.degree. F. in a heat exchanger enters a scrub tower where small amounts of char and hydrogen sulfide are removed from the product gas. The purified product gas is then fed to a gas or steam turbine of a power plant and together with the steam serves to provide energy for power generation during offpeak periods of power demand. During peak power demand periods, the low sulfur char is withdrawn from the storage hopper and burned as foiler fuel to satisfy the increased power needs. Thus, by partially gasifying high sulfur coal, a power plant fuel is produced consisting of char and fuel gas that on a heating value basis of coal has a sulfur content of less than 0.7%.
REFERENCES:
patent: 1781614 (1930-11-01), Trent
patent: 2654664 (1953-10-01), Reichl et al.
patent: 3446014 (1969-05-01), Foster-Pegy
patent: 3715195 (1973-02-01), Tassoney et al.
patent: 3746522 (1973-07-01), Donath
patent: 3852048 (1974-12-01), Pyle
patent: 3866411 (1975-02-01), Marion et al.
patent: 3873845 (1975-03-01), Osthous
patent: 3882671 (1975-05-01), Nebgen
patent: 3904386 (1975-09-01), Grabowski et al.
Bashore S. Leon
Kratz Peter F.
Price, Jr,. Stanley J.
LandOfFree
Process for converting high sulfur coal to low sulfur power plan 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 converting high sulfur coal to low sulfur power plan, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for converting high sulfur coal to low sulfur power plan will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-664242