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US 2009/0288426 A1Published application
Method and System for Delivering Gas to Consumers, and Use Thereof
OwnerDag Lilletvedt, Tomas Fiksdalinventors
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OwnerDag Lilletvedt, Tomas Fiksdalinventors
Estimating the term…
A method for delivery of cryogenic combustible gases to users is described, where the combustible gas is kept in one or more storage tanks (10, 20) in a liquid state, such as LNG, as said number of tanks are arranged to be filled up after they are emptied at the delivery to the users, and where a conduit (22, 24) leads gas in liquid state by way of an evaporator to said users. The method is characterized by the following steps: that the storage tanks (10, 20) are mobile and movable tanks which, when empty, are disconnected from the conduits (22, 24) and transported away for refilling of liquid gas, and thereafter reinstalled and reconnected to the conduits (22, 24); that a system is used which perform a switching between the tanks (10, 20) by means of adapted valve systems (40, 47, 49, 42, 51, 53) so that two or more mobile tanks may be used simultaneously in the system, and where one of said tanks is emptied of combustible gas before the other is emptied, where said switching is arranged to be carried out automatically; that systems (60, 62, 64, 66) are used to prevent unwanted pressure build-up in the mobile tanks (10, 20); and that systems (21, 23) are used for quick disconnection and connection of the tanks (10, 20). A system is also described, and use of the present invention for storage and transport of liquid gasses such as LNG gas, oxygen, nitrogen or other industrial gasses, for supplying industry and private households.
Method for delivering cryogenic fuel gasses to consumers, where said fuel gas is kept in one or more storage tanks (10, 20) in a liquid state, such as LNG, as said tanks are arranged for refilling after being emptied to the users, and where a conduit (22, 24) leads gas in a liquid state by an evaporator to said user, characterized by the following steps:
Method in accordance with one of the previous claims, characterized by that each of the pressurizes 40, 42 may be adjusted to either a high or low pressure by manual valves arranged upstream from the pressure regulating valves 47, 49, 51, 53.
Method in accordance with one of the previous claims, characterized by that each tank (10, 20) comprise an economizer solution which prevents unwanted pressure build-up, as when the pressure becomes too great in the gas volume (14, 18) gas is lead directly in to the conduit (22, 24) to the evaporator (30) and onward directly for consumption, and the too high pressure is given by a preset set-point.
Method in accordance with one of the previous claims, characterized by that each tank (10, 20) comprise a flexible quick connection (21, 23) by which the tanks (10, 20) may be easily disconnected from their conduits (22, 24) to the evaporator unit (30).
Method in accordance with one of the previous claims, characterized by that the conduits (22, 24) comprise automatic emergency stop valves (26, 28) arranged upstream of said quick connections (21, 23).
Method in accordance with one of the previous claims, characterized by that when it is necessary to fill up a storage tank, the storage tank (10, 20) is disconnected from the flexible conduit (21, 23), and that the system for emergency shut-down (70) is temporarily disconnected, where after the tank (10, 20) is lifted onto a transport means, such as a side loader, for transport to a depot for refilling, and then returned for reconnection to the system.
System for delivery of cryogenic combustible gases to users, comprising a number of storage tanks (10, 20) for LNG in liquid state, which is arranged for refilling after emptying, and a conduit (22, 24) that may lead gas in a liquid state to an evaporator and onwards to said users, characterized by that
Use of a system and method according to the previous claims, for delivery, storage and transport of liquid gasses, such as LNG-gas, oxygen, nitrogen or other industrial gasses, for supplying industry and private households.
Dependencies are inferred from the claim text.