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    Air separation method and apparatus
    2.
    发明申请
    Air separation method and apparatus 有权
    空气分离方法和装置

    公开(公告)号：US20080307828A1

    公开(公告)日：2008-12-18

    申请号：US11818636

    申请日：2007-06-15

    申请人： Neil Mark Prosser ,  Richard John Jibb

    发明人： Neil Mark Prosser ,  Richard John Jibb

    IPC分类号： F25J3/04 ,  F25J3/00

    CPC分类号： F25J3/04187 ,  F25J3/04084 ,  F25J3/0409 ,  F25J3/04218 ,  F25J3/0423 ,  F25J3/04236 ,  F25J3/04303 ,  F25J3/04387 ,  F25J3/04412 ,  F25J3/04678 ,  F25J5/00 ,  F25J2240/10 ,  F25J2290/12 ,  F25J2290/32 ,  F25J2290/44

    摘要： A compressed air stream is cooled to a temperature suitable for its rectification within a lower pressure heat exchanger and a boosted pressure air stream is liquefied or converted to a dense phase fluid within a higher pressure heat exchanger in order to vaporize pumped liquid products. Thermal balancing within the plant is effectuated with the use of waste nitrogen streams that are introduced into the higher and lower pressure heat exchangers. The heat exchangers are configured such that the flow area for the subsidiary waste nitrogen stream within the higher pressure heat exchanger is less than that would otherwise be required so that the subsidiary waste nitrogen streams were subjected to equal pressure drops in the higher and lower pressure heat exchangers. This allows the higher pressure heat exchanger be fabricated with a reduced height and therefore a decrease in fabrication costs.

    摘要翻译： 将压缩空气流冷却到适合于在低压热交换器内进行精馏的温度，并且在高压热交换器中将增压空气流液化或转化成致密相流体，以便蒸发泵送的液体产物。 使用引入高压和低压热交换器的废氮气流来实现设备内的热平衡。 热交换器被构造成使得在高压热交换器内的辅助废氮流的流动面积小于另外需要的流动面积，使得辅助废氮气流在较高和较低的压力热中受到相等的压降 交换器。 这允许以较低的高度制造高压热交换器，因此制造成本降低。