Oxygen-Deficient Thermally Produced Processed Biogas from Beneficiated Organic-Carbon-Containing Feedstock
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United States of America Patent
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Issued Date -
Feb 26, 2015
app pub date -
Jun 16, 2014
filing date -
Aug 20, 2013
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Abstract
A processed biogas composition made with an oxygen-deficient thermal sub-system from a processed organic-carbon-containing feedstock made with a beneficiation sub-system is described. Renewable biomass feedstock passed through a beneficiation sub-system to reduce water content to below at least 20 wt % and water-soluble salt reduction of at least 60% from that of unprocessed organic-carbon-containing feedstock on a dry basis. The processed feedstock is introduced into an oxygen-deficient thermal sub-system to result in processed biogas having an energy density of at least 700 BTU/cubic ft (26 MJ/cubic meter), a carbon monoxide concentration of less than 20 vol %, and a carbon dioxide concentration of less than 15 vol %.
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