Energy recovery system in a gas compression plant
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United States of America Patent
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Oct 29, 2013
Grant Date -
Oct 28, 2010
app pub date -
Apr 22, 2010
filing date -
Apr 28, 2009
priority date (Note) -
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Abstract
A system for recovering energy in a gas compression plant. The system comprises at least one centrifugal compressor configured to suck the gas, at a certain inlet pressure, from a suction conduit and configured to deliver the gas, at a certain outlet pressure that is greater than an inlet pressure, through a delivery conduit The system also includes at least one gas recirculation system configured to redirect the gas from the delivery conduit to the suction conduit when the gas flow rate entering into the compressor is below a certain limit value. In the portion of the plant arranged downstream of the compressor, at least one turbo-expander and at least one valve are installed in parallel so that they cooperate with each other and are controlled by electronic devices so as to protect the compressor and to produce useful energy during recirculation mode.
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