Waste heat boiler for cooling hot syngas
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United States of America Patent
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Aug 20, 2002
Grant Date -
Jun 20, 2002
app pub date -
Nov 16, 2001
filing date -
Dec 14, 2000
priority date (Note) -
Expired
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Abstract
A waste heat boiler for cooling hot syngas in heat exchange with water under boiling pressure, consists of an outer pressure shell (1) having a water space (2) filled with boiling water up to a predetermined fluid level (4) and a steam space (3) above it. In the water space (2), heat exchanger tubes (5) are arranged, through which the syngas to be cooled flows. Downstream from the heat exchanger tubes (5) is a superheater for superheating the saturated steam generated by the boiling water. This superheater is positioned at least partially in the steam space (3) above the fluid level (4) and has straight tubes (7), through which the syngas coming from the heat exchanger tubes (5) flows and around which the steam exiting from the water space (2) circulates.
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