Method for charging powdery heat insulator into a thermally insulated, double-shelled tank
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorToshiro Kato
Life of this patent
Estimating the term…
Abstract
Provided is a method for charging a powdery heat insulator into a thermally insulated, double-shelled tank between its inner vessel and outer vessel. The method comprises causing a powdery heat insulator to flow together with water into a space between the inner vessel and outer vessel of a thermally insulated, double-shelled tank, discharging the water in said space, and then drying the powdery heat insulator. The pressure in the space is then also reduced. The drying of the powdery heat insulator can be carried out by heating either the inner vessel or outer vessel, or both of these vessels, or by inert gas flow, such as nitrogen gas.
Claims9
A method for charging a powdery heat insulator into a double-shelled tank having an inner vessel and an outer vessel to obtain a thermally insulated, double-shelled tank, which comprises the steps of:
- introducing a mixture comprised of powdery heat insulator and water into a space between the inner vessel and outer vessel of the double-shelled tank;
- draining the water from said space;
- and
- drying the powdery heat insulator in the space to remove water remaining in the space after the step of draining and thereby forming the thermally insulated, double-shelled tank.
Dependencies are inferred from the claim text.