METHOD FOR LIQUEFACTION OF METHANE GAS BY VAPORIZATION OF NITROGEN, INSTALLATION FOR LIQUEFACTION OF METHANE GASEOUS IMPLEMENTING THE PROCESS.

摘要

A process for liquefying methane gas in which:- in a first exchanger, the flow of methane gas is cooled, in counter-current, by heat exchange with a flow of nitrogen gas coming from a phase separator flask,- the methane gas flow is transferred to a second counter-current exchanger,- the flow of liquid nitrogen is transferred from the source of liquid nitrogen to the phase separator flask,a temperature higher than the temperature of the methane triple point and a pressure are applied in the phase separator flask so as to produce a flow of liquid nitrogen and a flow of nitrogen gas,in the second exchanger, the flow of methane gas is liquefied by vaporization of the flow of liquid nitrogen while producing a flow of vaporized nitrogen,- the flow of vaporized nitrogen is transferred to the separator flask.- Transfer and then store the flow of liquid methane in a storage tank.Installation for the implementation of the process