| 发明名称 | Separation of components from a multi-component hydrocarbon stream which includes ethylene | ||
| 摘要 | A process to separate a multi-component hydrocarbon stream which includes ethylene and other components with at least some of the components being present in a number of phases, is provided. The process includes in a first flash stage, flashing the multi-component hydrocarbon stream, from an elevated pressure and temperature to a pressure in the range of 10-18 bar(a), producing a first ethylene-containing vapor stream at a pressure in the range of 10-18 bar(a) and a multi-phase stream which includes some ethylene. In a second flash stage, the multi-phase stream is flashed to a pressure of less than 6 bar(a), producing a second vapor stream at a pressure of less than 6 bar(a) and a bottoms stream. The first ethylene-containing vapor stream is removed from the first flash stage, the second vapor stream is removed from the second flash stage and the bottoms stream is removed from the second flash stage. | ||
| 申请公布号 | US9017522(B2) | 申请公布日期 | 2015.04.28 |
| 申请号 | US201013501116 | 申请日期 | 2010.10.01 |
| 申请人 | Sasol Technolgy (Proprietary) Limited | 发明人 | Gildenhuys Johannes Jochemus;Stone Andrew Kenneth;Revelt William Francis |
| 分类号 | C07C2/08;C07C7/04;B01D3/06;B01D3/32;C07C11/04 | 主分类号 | C07C2/08 |
| 代理机构 | Sutherland Asbill & Brennan LLP | 代理人 | Sutherland Asbill & Brennan LLP |
| 主权项 | 1. A process to separate a multi-component hydrocarbon stream which includes ethylene and other components with at least some of the components being present in a plurality of phases, the process including in a first flash stage, flashing the multi-component hydrocarbon stream, from an elevated pressure of more than 18 bar(a) and a temperature of more than 180° C. to a pressure in the range of 10-18 bar(a), producing a first ethylene-containing vapour stream at a pressure in the range of 10-18 bar(a) and a multi-phase stream which includes some ethylene; in a second flash stage, flashing the multi-phase stream to a pressure of less than 6 bar(a), producing a second vapour stream at a pressure of less than 6 bar(a) and a bottoms stream; removing the first ethylene-containing vapour stream from the first flash stage and the second vapour stream from the second flash stage; separating at least a portion of the ethylene from the first ethylene-containing vapour stream by subjecting the first ethylene-containing vapour stream to at least one ethylene recovery stage producing an ethylene-rich stream and an ethylene-poor multi-component hydrocarbon stream; and removing the bottoms stream from the second flash stage. | ||
| 地址 | Johannesburg ZA | ||