Hydrogen-concentrating process and apparatus
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United States of America Patent
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Apr 1, 1986
Grant Date -
N/A
app pub date -
May 8, 1984
filing date -
May 16, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The starting gas is partly condensed in an exchanger 1. The refrigerating power is supplied, on one hand, by the free expansion of the liquid fraction and, on the other hand, by expansion in a gas-bearing turbine of the vapor fraction rich in hydrogen. A small part of this vapor fraction is used to feed auxiliary gases to the turbine, then is cooled in the exchanger 1, expanded and injected into the expanded liquid fraction so as to obtain a sufficiently low bubble point. The invention is useful in recovering hydrogen from purge gases of apparatus for ammonia synthesis, the purge gases being composed of hydrogen and less volatile components.
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