Liquid purification or separation – Processes – Treatment by living organism
Patent
1980-01-18
1981-09-15
Wyse, Thomas G.
Liquid purification or separation
Processes
Treatment by living organism
210613, 210770, 210774, C02F 328
Patent
active
042896258
ABSTRACT:
A hybrid bio-thermal gasification process for improved carbonaceous gasification wherein a biological feed is anaerobically digested with product methane and carbon dioxide containing gas withdrawn from the digester and biological residue separately withdrawn from the digester and introduced into a thermal gasifier wherein at least a substantial portion of the biological residue is gasified under elevated temperature conditions producing thermal gasifier products and thermal residue with at least a portion of the thermal gasifier products or their derivatives being returned to the digester. The process provides high conversion of the carbonaceous material and biological feed stocks to gas products and permits gasification of a wider variety of biological feeds by anaerobic digestion processes while requiring less external nutrient feeding to the process. The process of this invention provides a highly efficient process for production of substitute natural gas. Various advantages of interrelation between the anaerobic digester and thermal gasification are taught.
REFERENCES:
patent: 2097454 (1937-11-01), Fischer
patent: 2638444 (1953-05-01), Kappe
patent: 3345288 (1967-10-01), Sontheimer
patent: 3383309 (1968-05-01), Chandler
patent: 3741890 (1973-06-01), Smith et al.
patent: 4076515 (1978-02-01), Richard
patent: 4190528 (1980-02-01), Dassen
patent: 4204842 (1980-05-01), Morel et al.
Chynoweth David P.
Tarman Paul B.
Institute of Gas Technology
Speckman Thomas W.
Wyse Thomas G.
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