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    • 6. 发明公开
    • Downflow reboiler-condenser with vapor lift pumping
    • AbwärtsströmenderWärmetauschermit Lufthebepumpe
    • EP0866293A1
    • 1998-09-23
    • EP98301905.0
    • 1998-03-13
    • The BOC Group plc
    • Rathbone, Thomas
    • F25J5/00F25J3/04F25J3/00F04F1/18
    • F04F1/18F25J3/04412F25J3/04793F25J3/04884F25J2235/06F25J2245/50F25J2250/04F25J2250/50F25J2250/52Y10S62/903
    • A heat exchange apparatus, typically for use in association with a double rectification column 2 for the separation of air, has a downflow reboiler 32 with boiling passages 34. In addition, there is a condenser 20 in a position at a higher elevation than the reboiler 32. The condenser 20 is fed with liquefied gas to be reboiled from the sump 38 of a lower pressure column 6 forming part of the double rectification column 2. A first conduit 44 feeds the liquefied gas under gravity to the reboiler 32. The feeding of the condenser 20 is effected by a vapour lift pump comprising a second conduit 40 and an expansion valve 42 disposed therein. Some of the liquefied gas is vaporised by passage through the expansion valve 42, and this vapour provides the vapour lifting pumping effect. The vapour is recondensed in the condenser 20.
    • 通常用于与用于分离空气的双精馏塔2结合使用的热交换装置具有带沸腾通道34的下流再沸器32.此外,在比再沸器更高的位置处有一个冷凝器20 冷凝器20被供给液化气体,以从形成双精馏塔2的一部分的低压塔6的贮槽38中再沸腾。第一导管44在重力作用下将液化气体送入再沸器32.进料 冷凝器20由包括设置在其中的第二管道40和膨胀阀42的蒸汽提升泵来实现。 一些液化气体通过通过膨胀阀42而蒸发,并且该蒸气提供蒸气提升泵送效应。 蒸汽在冷凝器20中重新凝结。