Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-03-10
1977-08-09
Bascomb, Jr., Wilbur L.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
48197A, 71 10, 195 33, 210 12, 210 16, C02C 114
Patent
active
040409538
ABSTRACT:
The present invention relates to the manufacture of high calorific fuel gas through a process of anaerobic digestion involving retention of a slurry of organic material, maintained at a predetermined volume-to-interface (V/I) ratio and for a desired liquid retention time, pH and temperature to produce substantial amounts of methane gas while minimizing the production of carbon dioxide gas. When operating in the preferred range of volume-to-interface (V/I) relationships, the faster molecular diffusion rate of methane from the slurry as compared with carbon dioxide gas allows virtually all of the methane to be collected from the slurry while a considerably smaller amount of carbon dioxide gas is collected. Instead, the bulk of the carbon dioxide remains in the spent slurry which is transferred as sludge to a loop for carbon dioxide stripping. Liquid retention is controlled by a recirculation-stripping loop. Stripping of the carbon dioxide from the sludge in this loop is greatly improved by adjustment of pH with acid.
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Sen et al., "Anaerobic Digestion of Liquid Molasses Distillery Wastes," WPCFJ, Oct. 1962, pp. 1015-1025.
Bascomb, Jr. Wilbur L.
Hruskoci Peter A.
RecTech, Inc.
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