发明名称 |
Method and plant for purifying unsaturated compounds |
摘要 |
Process for purifying unsaturated compounds, and a plant for performing the process. Unsaturated compound obtained by the process. |
申请公布号 |
US9259664(B2) |
申请公布日期 |
2016.02.16 |
申请号 |
US201213669607 |
申请日期 |
2012.11.06 |
申请人 |
EVONIK ROEHM GmbH |
发明人 |
Laux Benedikt;Maul Christian;Schleep Volker;Sander Ingo |
分类号 |
C07C67/54;C07C69/54;B01D1/00;B01D1/22 |
主分类号 |
C07C67/54 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A process for purifying an unsaturated compound, comprising:
feeding a mixture of the unsaturated compound and at least one of a compound of higher volatility than the unsaturated compound, a catlyst and a compound of lower volatility than the unsaturated compound to a first evaporator; vaporizing a portion of the unsaturated compound and any compound of higher volatility at a pressure of from 0.1 mbar to 20 mbar in the first evaporator; removing the vapor phase from the first evaporator and isolating the unsaturated compound from the vapor phase; transferring a portion of the nonvaporized mixture from a bottom of the first evaporator to a second evaporator having a pressure of from 0.1 mbar to 20 mbar; vaporizing a portion of the unsaturated compound in the second evaporator; condensing the unsaturated compound vapor from the second evaporator and returning the condensate to the first evaporator; wherein a mass flow of condensed vapor from the first evaporator is less than the mass flow of condensate from the second evaporator to the first evaporator, and a purity of the isolated unsaturated compound is 99% or more. |
地址 |
Darmstadt DE |