公开(公告)号：EP2688859A1

公开(公告)日：2014-01-29

申请号：EP12703778.6

申请日：2012-02-07

申请人： Lurgi GmbH

发明人： BIRKE, Gerhard ,  BACH, Hermann

IPC分类号： C07C1/20 ,  C07C4/02

CPC分类号： C07C2/864 ,  C07C1/20 ,  C07C4/06 ,  C07C2529/40 ,  Y02P20/582 ,  Y02P30/42 ,  C07C11/04 ,  C07C11/06

摘要： In the preparation of low molecular weight olefins, especially of ethylene and propylene, a reactant stream (O) comprising at least one oxygenate and a reactant stream (C) comprising at least one C
4+ olefin are converted simultaneously in at least one identical reactor over an identical catalyst to a product mixture (P) comprising low molecular weight olefins and gasoline hydrocarbons. In this case, the ratio (V) of oxygenates in the reactant stream (O) to C
4+ olefins in the reactant stream (C) is 0.05 to 0.5 and is calculated by the following formula: formula (I) where: k
oxygenate-j : carbon number of the oxygenate j n
oxygenate-j : molar flow rate of the oxygenate j k
olefin-i : carbon number of the olefin i n
olefin-i : molar flow rate of the olefin i.

摘要翻译： 在低分子量烯烃（特别是乙烯和丙烯）的生产中，在至少一个相同的反应器中同时转化含有至少一种含氧化合物的流出物流（O）和含有至少一种C 4 +烯烃的流出物流（C） 相同的催化剂以获得包含低分子烯烃和汽油烃的产物混合物（P）。 流出物（C）中的流出物（O）中的含氧化合物与C 4 +烯烃的比例（V）为0.05至0.5，并根据以下公式计算：V =Σj = k含氧化合物 - j * n含氧化合物 含氧化合物j：含氧化合物j：碳氧化合物的碳数j氧化剂-j：含氧化合物的摩尔流量j α-烯烃-i：烯烃的烯烃数量Nolefin-i：烯烃i的摩尔流量

公开(公告)号：EP2367780A1

公开(公告)日：2011-09-28

申请号：EP09775097.0

申请日：2009-11-19

申请人： Lurgi GmbH

发明人： AHLERS, Bernd ,  BIRKE, Gerhard ,  KÖMPEL, Harald ,  BACH, Hermann ,  ROTHÄMEL, Martin ,  LIEBNER, Waldemar ,  BOII, Walter ,  GRONEMANN, Veronika

IPC分类号： C07C41/09 ,  C07C43/04 ,  B01D3/14

CPC分类号： C07C41/09 ,  B01D3/143 ,  C07C43/043

摘要： A process produces dimethyl ether (DME) from methanol (MeOH). The process includes charging a feed mixture consisting of raw MeOH and a process-internally obtained return flow substantially consisting of unconverted MeOH and reaction water to an MeOH column. The feed mixture is evaporated in the MeOH column to form a first distillate substantially consisting of vaporous MeOH. The first distillate is supplied to a reactor and the MeOH is converted to DME by splitting off water in the reactor so as to form a reaction mixture. The reaction mixture is withdrawn from the reactor, charged to a mixture column and separated into a bottom product substantially consisting of water and a second distillate substantially consisting of DME and MeOH. The second distillate is separated in a DME column into a third distillate substantially consisting of DME, a bottom product consisting essentially of water-poor MeOH, and uncondensable gases discharged overhead. The bottom product is either supplied to a top of the MeOH column or mixed with another bottom product withdrawn from a forerun column.