公开(公告)号：US20180180357A1

公开(公告)日：2018-06-28

申请号：US15847990

申请日：2017-12-20

Applicant: Dimitri Golubev

Inventor： Dimitri Golubev

IPC: F25J3/04

CPC classification number: F25J3/04084 ,  F17C2223/0161 ,  F17C2223/033 ,  F25J3/04024 ,  F25J3/0409 ,  F25J3/04133 ,  F25J3/04157 ,  F25J3/04181 ,  F25J3/04218 ,  F25J3/04296 ,  F25J3/04303 ,  F25J3/04309 ,  F25J3/04315 ,  F25J3/04387 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04927 ,  F25J2200/94 ,  F25J2205/04 ,  F25J2205/32 ,  F25J2205/34 ,  F25J2215/40 ,  F25J2215/52 ,  F25J2215/54 ,  F25J2240/10 ,  F25J2240/12 ,  F25J2240/42 ,  F25J2240/46 ,  F25J2245/50 ,  F25J2245/58

Abstract: A process and air separation plant for producing one or more air products by cryogenic separation of air in an air separation plant wherein a first fraction and a second fraction of feed air quantity are post-compressed in a post-compressor from a first pressure level to a second pressure level at least 3 bar above the first pressure level, and are extracted from a post-compressor jointly at the second pressure level, impure nitrogen, the nitrogen content of which lies below an overhead product of a high-pressure column, is extracted from the high-pressure column at the first pressure level and is expanded using a second turboexpander which is mechanically coupled to a first booster, and a fluid enriched with argon is extracted from a low-pressure column, is depleted of argon and is recycled into the low-pressure column.

公开(公告)号：US20180017322A1

公开(公告)日：2018-01-18

申请号：US15643509

申请日：2017-07-07

Applicant: Dimitri Golubev

Inventor： Dimitri Golubev

IPC: F25J3/04

CPC classification number: F25J3/0429 ,  F25J3/0403 ,  F25J3/0423 ,  F25J3/04309 ,  F25J3/04321 ,  F25J3/04357 ,  F25J3/04381 ,  F25J3/04393 ,  F25J3/04412 ,  F25J3/04448 ,  F25J3/04745 ,  F25J3/04812 ,  F25J3/04836 ,  F25J3/04854 ,  F25J2200/20 ,  F25J2200/54 ,  F25J2200/94 ,  F25J2210/40 ,  F25J2215/04 ,  F25J2215/42 ,  F25J2215/56 ,  F25J2250/02 ,  F25J2250/20 ,  F25J2250/42 ,  F25J2270/02

Abstract: A method and apparatus for producing compressed nitrogen and liquid nitrogen. A separation system has a high-pressure column, a low-pressure column with a top condenser and a main condenser. Air is compressed in an air compressor, purified, cooled in a heat exchanger and introduced into the high-pressure column. A first part of the gaseous top nitrogen from the low-pressure column becomes compressed nitrogen product. A second part of the gaseous top nitrogen is condensed in the condensing space of the top condenser and vapour is drawn off as a residual gas stream. The vapor is expanded in a first expansion machine. A second compressed nitrogen stream from the top of the high-pressure column is expanded in a second expansion machine and then drawn off as compressed nitrogen product. A part of the nitrogen condensed in the top condenser is drawn off as liquid nitrogen product.

公开(公告)号：US11959701B2

公开(公告)日：2024-04-16

申请号：US17875645

申请日：2022-07-28

Applicant: Neil M. Prosser ,  Dimitri Golubev

Inventor： Neil M. Prosser ,  Dimitri Golubev

IPC: F25J3/02 ,  F25J3/04

CPC classification number: F25J3/04412 ,  F25J3/04648 ,  F25J3/04666 ,  F25J3/04709 ,  F25J3/04715 ,  F25J2245/42 ,  F25J2250/58

Abstract: An air separation unit and associated method for separating air by cryogenic distillation using a distillation column system including a higher pressure column, a lower pressure column, an intermediate pressure kettle column, and an argon column arrangement is provided. The disclosed air separation unit and method is particularly suited for production of high purity nitrogen for electronics applications and includes nitrogen recycle circuit necessary to attain the higher purity nitrogen products. In addition to the intermediate pressure kettle column, the present air separation unit and associated method employs a once-through argon condenser, preferably disposed within the lower pressure column as well as a once-through kettle column reboiler, a once-through kettle column condenser.

公开(公告)号：US20240035742A1

公开(公告)日：2024-02-01

申请号：US17875645

申请日：2022-07-28

Applicant: Neil M. Prosser ,  Dimitri Golubev

Inventor： Neil M. Prosser ,  Dimitri Golubev

IPC: F25J3/04

CPC classification number: F25J3/04412 ,  F25J3/04648

Abstract: An air separation unit and associated method for separating air by cryogenic distillation using a distillation column system including a higher pressure column, a lower pressure column, an intermediate pressure kettle column, and an argon column arrangement is provided. The disclosed air separation unit and method is particularly suited for production of high purity nitrogen for electronics applications and includes nitrogen recycle circuit necessary to attain the higher purity nitrogen products. In addition to the intermediate pressure kettle column, the present air separation unit and associated method employs a once-through argon condenser, preferably disposed within the lower pressure column as well as a once-through kettle column reboiler, a once-through kettle column condenser.