Sludge dewatering and destruction within a delayed coking process
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United States of America Patent
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-
Nov 6, 1990
Grant Date -
N/A
app pub date -
Apr 25, 1988
filing date -
Apr 25, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Wet refinery sludges are disposed of by feeding them into a delayed coking process. The sludge is fed to the blowdown drum of the delayed coking process and mixed with oil condensed from the coke drum overhead, and the resulting sludge-oil mixture is fed to the coke drum where it is converted into coke. In order to remove the water from the sludge, a portion of the sludge-oil mixture is heated and recirculated to the blowdown drum where it provides the heat for drying and heating the sludge. The recirculating sludge-oil mixture is heated by a low level heat source, such as one of the fluid streams taken off from the fractionator.
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