公开(公告)号：US5778700A

公开(公告)日：1998-07-14

申请号：US846748

申请日：1997-04-30

申请人： Rong-Jwyn Lee ,  Joseph P. Naumovitz ,  Craig Steven LaForce

发明人： Rong-Jwyn Lee ,  Joseph P. Naumovitz ,  Craig Steven LaForce

IPC分类号： F25J3/04 ,  F25J3/00

CPC分类号： F25J3/04515 ,  F25J3/0429 ,  F25J3/04303 ,  F25J3/04466 ,  F25J2200/06 ,  F25J2235/50 ,  F25J2240/42 ,  F25J2245/40

摘要： A method of producing gaseous oxygen in accordance with a variable demand cycle in which pumped liquid oxygen from a double column air separation unit is vaporized within a mixing column. During low demand phases, excess liquid oxygen is stored within a storage tank and used to augment the liquid oxygen to vaporized during the high demand phase. Reflux to the lower pressure column of the air separation unit is kept constant by storing liquid with column bottoms produced within the mixing column during the high demand phase for use in the low demand phase when less liquid oxygen is vaporized and therefore less column bottoms is produced in the mixing column.

摘要翻译： 根据可变需求循环来生产气态氧的方法，其中来自双塔空气分离单元的泵送液氧在混合塔内蒸发。 在低需求阶段期间，过量的液氧储存在储罐中，并用于在高需求阶段期间增加液氧的蒸发。 通过在较低需求阶段期间在低需求阶段中储存液体与塔底产生的混合塔中的塔底液的回流，使得空气分离单元的低压塔的回流保持恒定，当较少的液氧气被蒸发并因此产生较少的柱底时 在混合塔中。