Container vessel for storage and transportation of liquefied natural gases
专利汇可以提供Container vessel for storage and transportation of liquefied natural gases专利检索，专利查询，专利分析的服务。并且914,195. Storing liquefied gases. SOHDA, Y., and SOHDA, Y. Nov. 4, 1960 [Nov. 4, 1959; Dec. 3, 1959], No. 38076/60. Class 8(2). In a container vessel assembly for the storage and transportation of liquefied gases the vessel is provided with injection means for injecting into the interior thereof both gaseous nitrogen pre-cooled to a temperature between.-17.0 ‹0. and-180‹C. and liquefied nitrogen, in the form of finely dispersed bubbles and liquid particles, whereby both the gaseous and liquefied nitrogen are brought into intimate heat exchange with a body of liquefied gas contained in the vessel for effective cooling thereof. As described with reference to Fig. 1 a container vessel 1 is substantially filled with liquefied natural gas a, the vessel having a pipe 2 for inlet and outlet of the gas. Liquefied nitrogen and gaseous nitrogen from reservoirs 9 and 7, respectively, are injected into the vessel through pipes 8 and 6 and parallel spiral coils 5 and 4, the latter having orifices therein arranged so as to inject the nitrogen gas and liquid towards each other, and towards the wall of the vessel. A fractionating chamber 13 is provided at the top of the vessel to which is connected the suction pipe 14 of a multistage refrigerant compressor 15 having a delivery pipe 18 connected to the liquefied nitrogen reservoir 9 and a delivery pipe 19 through which gaseous nitrogen is tapped from an intermediate stage of the compressor and led to the reservoir 7. The pipe 19 may be provided with a cooler and an expansion valve. Liquefied nitrogen may be supplied from the reservoir 9 through a pipe 21 to the reservoir 7 and through a pipe 23 to the fractionating chamber 13. Any natural gas reliquefied in the compressor 15 is returned to the vessel 1 through a pipe 24. The fractionating chamber 13 may be dispensed with. The spiral coils 5 and 4 may have a diminishing diameter or a course pitch as they approach the centre of the vessel; they may be replaced by a plurality of concentric coil elements or the coil for the liquefied nitrogen may be disposed within the coil for the gaseous nitrogen, the coils having concentric injecting nozzles, Figs 4 to 8 (not shown). A plurality of coil assemblies may be spaced one above the other in the vessel, Figs. 9 and 12 (not shown). The return pipe 24 may be connected to a separate vessel instead of to the vessel 1. Nets may be provided above the orifices or nozzles on the coils so as to finely disperse the nitrogen and a further net may be disposed just below the surface of the liquefied natural gas a to collect any solidified flakes of the latter so as to bring them into heat exchange contact with the rest of the natural gas. The container vessel may have a double bottom, gaseous nitrogen being supplied to the space between the bottoms for heat insulation; the inner bottom may have a plurality of fine openings preferably along its periphery so that the gaseous nitrogen can pass into the interior of the vessel.，下面是Container vessel for storage and transportation of liquefied natural gases专利的具体信息内容。
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