发明名称 |
MAIN HEAT EXCHANGE SYSTEM AND METHOD FOR REBOILING |
摘要 |
A method and main heat exchange system for use in a cryogenic air separation plant in which down-flow and thermosiphon heat exchangers are employed to partially vaporize an oxygen-rich liquid produced in a lower pressure column and to condense the nitrogen-rich vapor in a higher pressure column. A greater proportion of the oxygen-rich liquid can be partially vaporized in the down-flow heat exchangers than in the thermosiphon heat exchangers and the nitrogen-rich vapor condensed in the thermosiphon heat exchangers can have a higher oxygen content than the nitrogen-rich vapor condensed in the down-flow heat exchangers. This allows the higher pressure column to operate at a lower pressure than would otherwise be possible. A central conduit can extend from the higher pressure column into the lower pressure column to introduce the nitrogen-rich vapor into at least the down-flow heat exchangers for purposes of reducing pressure drop and column height. |
申请公布号 |
US2016356546(A1) |
申请公布日期 |
2016.12.08 |
申请号 |
US201615242961 |
申请日期 |
2016.08.22 |
申请人 |
Chakravarthy Vijayaraghavan S.;Lockett Michael J.;Bonaquist Dante P.;Shelat Maulik R.;Kibler Karl K. |
发明人 |
Chakravarthy Vijayaraghavan S.;Lockett Michael J.;Bonaquist Dante P.;Shelat Maulik R.;Kibler Karl K. |
分类号 |
F25J3/04;F25J5/00 |
主分类号 |
F25J3/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
Williamsville NY US |