Thermal insulation system for gas liquefaction plant - utilises vacuum in plant carrying out liquefaction with use of adsorbers

摘要

The thermal insulation system is used for a liquefaction plant for low boiling point gases. Insulation is provided by evacuation of the plant vacuum vessel (2) holding heat exchanger for cooling gases. The plant alos includes a liquefaction arrangement. A vacuum is generated in a vessel before cooling of the plant by pumping. During the cooling and liquefaction process, absorbers are used so that a high vacuum is generated and maintained. The absorbers are in indirect thermal contact with the cooled or liquefied gas.