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公开(公告)号：US08549878B2
公开(公告)日：2013-10-08
申请号：US11993907
申请日：2006-06-16
IPC分类号： F25J3/00
CPC分类号： F25J3/04181 , F25J3/04157 , F25J3/0423 , F25J3/04254 , F25J3/04412 , F25J3/04824 , F25J2200/90 , F25J2205/70 , F25J2210/42 , F25J2210/50 , F25J2215/50 , F25J2290/62
摘要： There is provided a method of generating nitrogen which includes cryogenically separating compressed air introduced into a high-pressure column 11, storing liquid air 13 in a bottom portion of the high-pressure column 11 and taking nitrogen in gaseous form from an upper portion of the high-pressure column 11, introducing the liquid air 13 stored in the bottom portion of the high-pressure column 11 into a low-pressure column 12, cryogenically separating the liquid air 13 introduced into the low-pressure column 12 and storing oxygen-enriched liquid air 22 in a bottom portion of the low-pressure column 12 and taking nitrogen in gaseous form from an upper portion of the low-pressure column 12 as a product gas. Liquid air 13 taken through an extraction pipe 20 is introduced into a portion of a rectification part 12a of the low-pressure column 12 in which the number of theoretical plates from a column bottom side is set within the range of one to ten.
摘要翻译： 提供了一种产生氮气的方法，其包括将引入高压塔11的压缩空气进行低温分离，将液体空气13储存在高压塔11的底部并从气体形式的上部取出氮气 高压塔11将存储在高压塔11的底部的液体空气13引入低压塔12，将引入低压塔12的液体空气13进行低温分离并将富氧 在低压塔12的底部的液体空气22作为产品气体从低压塔12的上部取出气态氮气。 通过抽取管20取出的液体空气13被引入到从塔底侧的理论塔板数设定在1〜10的范围内的低压塔12的整流部12a的一部分。
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公开(公告)号：US20090223247A1
公开(公告)日：2009-09-10
申请号：US11993907
申请日：2006-06-16
IPC分类号： F25J3/02
CPC分类号： F25J3/04181 , F25J3/04157 , F25J3/0423 , F25J3/04254 , F25J3/04412 , F25J3/04824 , F25J2200/90 , F25J2205/70 , F25J2210/42 , F25J2210/50 , F25J2215/50 , F25J2290/62
摘要： There is provided a method of generating nitrogen which includes cryogenically separating compressed air introduced into a high-pressure column 11, storing liquid air 13 in a bottom portion of the high-pressure column 11 and taking nitrogen in gaseous form from an upper portion of the high-pressure column 11, introducing the liquid air 13 stored in the bottom portion of the high-pressure column 11 into a low-pressure column 12, cryogenically separating the liquid air 13 introduced into the low-pressure column 12 and storing oxygen-enriched liquid air 22 in a bottom portion of the low-pressure column 12 and taking nitrogen in gaseous form from an upper portion of the low-pressure column 12 as a product gas. Liquid air 13 taken through an extraction pipe 20 is introduced into a portion of a rectification part 12a of the low-pressure column 12 in which the number of theoretical plates from a column bottom side is set within the range of one to ten.
摘要翻译： 提供了一种产生氮气的方法，其包括将引入高压塔11的压缩空气进行低温分离，将液体空气13储存在高压塔11的底部并从气体形式的上部取出氮气 高压塔11将存储在高压塔11的底部的液体空气13引入低压塔12，将引入低压塔12的液体空气13进行低温分离并将富氧 在低压塔12的底部的液体空气22作为产品气体从低压塔12的上部取出气态氮气。 通过抽取管20取出的液体空气13被引入到从塔底侧的理论塔板数设定在1〜10的范围内的低压塔12的整流部12a的一部分。
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