Process for the utilization of sewage sludges
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United States of America Patent
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Jul 8, 1997
Grant Date -
N/A
app pub date -
Sep 8, 1994
filing date -
Sep 13, 1993
priority date (Note) -
Expired
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Abstract
In the process, the wet sewage sludge originating from a preceding mechanical dewatering is mixed with brown coal, brown coal coke or their mixtures in a weight ratio of sewage sludge to brown coal or its mixtures with brown coal coke of 1:3 to 3:1 and subsequently compacted wet at moderate compaction pressures above 50 bar to dimensionally stable mouldings. The briquetted mouldings can then be fed to a power station boiler as an auxiliary fuel to a thermal utilization or utilized chemically in a pyrolysis or gasification process for the production of fuel gas or synthesis gas.
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