Method and apparatus for reducing evaporation of storage tanks

Refrigeration – Storage of solidified or liquified gas – Storing solidified gas

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F17C 1300

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active

048215244

ABSTRACT:
In the equipment for reducing evaporation losses of storage tanks containing volatile materials, the storage tanks are provided with holes for the inlet resp. outlet of the material to be stored, furtheron with breathing valves and the gas-spaces of the storage tanks (40) are joined to communicate with each other and have a common discharging means (45). In course of a process for the recovery of condensable vapors from a gas-vapors mixture and for the separation thereof the gas-vapors mixture is led from the communicating gas spaces of the storage tanks containing volatile materials into the condenser, in which condensing is performed discontinuously, if a gaugepressure prevails in the common gas spaces, and so that the gas-vapor mixture is condensed with its own condensate streaming in a counterstream, as well as by means of the heat-transferring elements with internal cooling arranged in the flow of the gas-vapor mixture, so e.g. with heat pipes, absorbing the heat of condensation continuously from the height level of gas-vapor mixture, following one another. The Condenser for the performance of the process has a lower space (7a) and an upper space (7b resp. 7c) which are separated by a wall composed of bundles of tubes (7e) and heat pipes (7d) having been provided with an inner filling are extending through the wall of the bundles of tubes (7e) in a sealed manner, and in the upper tract of the lower space (7a) a further communication hole is formed.

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