| 发明名称 |
Process and apparatus for the separation of air by cryogenic distillation |
| 摘要 |
An apparatus and process for separating air by cryogenic distillation includes a heat exchanger, a column system having at least one cryogenic distillation column, a conduit for supplying the column system with cooled air from the heat exchanger, a storage tank, a conduit for removing a liquid from the column system and sending it to the storage tank, at least one pump, at least one conduit for sending pumped liquid from the outlet of the or each pump to the heat exchanger, at least one conduit connected to the outlet of the pump or at least one outlet of at least one pump and to a column of the column system, said conduit passing directly to the column without passing via the storage tank. |
| 申请公布号 |
US9400135(B2) |
申请公布日期 |
2016.07.26 |
| 申请号 |
US201013820247 |
申请日期 |
2010.09.09 |
| 申请人 |
L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Claude |
发明人 |
Briglia Alain;Cao Jian Wei;Guyard Frederic;Merino Philippe |
| 分类号 |
F25J3/00;F25J3/04 |
主分类号 |
F25J3/00 |
| 代理机构 |
|
代理人 |
Murray Justin K. |
| 主权项 |
1. A process for separating air by cryogenic distillation, the process comprising the steps of:
a) cooling compressed and purified air in a heat exchanger and then distilling in a column of a column system; b) withdrawing a liquid from a column of the column system and sending to a storage tank; c) removing a stored liquid from the storage tank and pressurizing using at least one pump; d) sending a first stream of pressurized liquid from the at least one pump to the heat exchanger to be vaporized to form a gaseous product; and e) expanding a second stream of pressurized liquid from the at least one pump or a fluid derived from the second stream to form a gaseous fraction and a liquid fraction and sending the gaseous fraction to a column of the column system. |
| 地址 |
Paris FR |
