公开(公告)号：WO2012071120A2

公开(公告)日：2012-05-31

申请号：PCT/US2011/057278

申请日：2011-10-21

Applicant: LUMMUS TECHNOLOGY INC. ,  STANLEY, Stephen, J. ,  DE HAAN, Stephen ,  KUZMA, Peter, Daniel, Jr.

Inventor： STANLEY, Stephen, J. ,  DE HAAN, Stephen ,  KUZMA, Peter, Daniel, Jr.

IPC: C07C7/08 ,  C07C11/04 ,  C10G11/18 ,  B01J8/18

CPC classification number: C07C7/08 ,  C07C7/1485 ,  C10G9/00 ,  C10G9/36 ,  C10G11/18 ,  C10G21/06 ,  C10G25/05 ,  C10G53/08 ,  C10G2300/4081 ,  C10G2400/20 ,  Y02P30/40 ,  Y02P30/42 ,  Y02P30/446 ,  Y02P30/462 ,  C07C11/04

Abstract: A process for recovering ethylene is disclosed, the process including: recovering a ethylene-containing stream comprising methane, ethylene, and nitrogen oxides from at least one of an ethylene production process and an ethylene recovery process; separating the ethylene-containing stream via extractive distillation using at least one C 2 + hydrocarbon absorbent to produce an overheads fraction comprising methane and nitrogen oxides and a bottoms fraction comprising the at least one C 2+ hydrocarbon absorbent and ethylene; wherein the separating comprises operating the extractive distillation at temperatures and pressures sufficient to prevent any substantial conversion of nitrogen oxides to N 2 0 3 .

Abstract translation: 公开了回收乙烯的方法，该方法包括：从乙烯生产方法和乙烯回收方法中的至少一种回收包含甲烷，乙烯和氮氧化物的含乙烯料流; 通过萃取蒸馏使用至少一种C2 +烃吸收剂分离含乙烯流，以产生包含甲烷和氮氧化物的塔顶馏分和包含至少一种C 2 +烃吸收剂和乙烯的塔底馏分; 其中所述分离包括在足以防止氮氧化物大量转化为N 2 O 3的温度和压力下进行萃取蒸馏。

公开(公告)号：WO2012071120A3

公开(公告)日：2012-07-19

申请号：PCT/US2011057278

申请日：2011-10-21

Applicant: LUMMUS TECHNOLOGY INC ,  STANLEY STEPHEN J ,  DE HAAN STEPHEN ,  KUZMA PETER DANIEL JR

Inventor： STANLEY STEPHEN J ,  DE HAAN STEPHEN ,  KUZMA PETER DANIEL JR

IPC: C07C7/08 ,  B01J8/18 ,  C07C11/04 ,  C10G11/18

CPC classification number: C07C7/08 ,  C07C7/1485 ,  C10G9/00 ,  C10G9/36 ,  C10G11/18 ,  C10G21/06 ,  C10G25/05 ,  C10G53/08 ,  C10G2300/4081 ,  C10G2400/20 ,  Y02P30/40 ,  Y02P30/42 ,  Y02P30/446 ,  Y02P30/462 ,  C07C11/04

Abstract: A process for recovering ethylene is disclosed, the process including: recovering a ethylene-containing stream comprising methane, ethylene, and nitrogen oxides from at least one of an ethylene production process and an ethylene recovery process; separating the ethylene-containing stream via extractive distillation using at least one C2+ hydrocarbon absorbent to produce an overheads fraction comprising methane and nitrogen oxides and a bottoms fraction comprising the at least one C2+ hydrocarbon absorbent and ethylene; wherein the separating comprises operating the extractive distillation at temperatures and pressures sufficient to prevent any substantial conversion of nitrogen oxides to N203.

Abstract translation: 公开了回收乙烯的方法，该方法包括：从乙烯生产方法和乙烯回收方法中的至少一种回收包含甲烷，乙烯和氮氧化物的含乙烯料流; 通过萃取蒸馏使用至少一种C2 +烃吸收剂分离含乙烯流，以产生包含甲烷和氮氧化物的塔顶馏分和包含至少一种C 2 +烃吸收剂和乙烯的塔底馏分; 其中所述分离包括在足以防止氮氧化物大量转化为N 2 O 3的温度和压力下进行萃取蒸馏。

公开(公告)号：WO1998037169A1

公开(公告)日：1998-08-27

申请号：PCT/US1997001932

申请日：1997-02-19

Applicant: ABB LUMMUS GLOBAL INC. ,  CHEMICAL RESEARCH & LICENSING COMPANY ,  STANLEY, Stephen, J. ,  McCARTHY, Francis, D. ,  SUMNER, Charles ,  GILDERT, Gary, Robert

Inventor： ABB LUMMUS GLOBAL INC. ,  CHEMICAL RESEARCH & LICENSING COMPANY

IPC: C10G70/02

CPC classification number: C10G7/00 ,  C10G45/00 ,  C10G45/32 ,  C10G70/02

Abstract: The C2 to C5 and heavier acetylenes and dienes in a thermally cracked feed stream are hydrogenated without significantly hydrogenating the C2 and C3 olefins. Additionally, the C4 and heavier olefins may be hydrogenated. Specifically, the cracked gas feed in an olefin plant is hydrogenated in a distillation reaction column containing a hydrogenation catalyst without the necessity of separating the hydrogen out of the feed and without any significant hydrogenation of the ethylene and propylene. A combined reaction-fractionation step known as catalytic distillation hydrogenation is used to simultaneously carry out the reactions and separations while maintaining the hydrogenation conditions such that the ethylene and propylene remain substantially unhydrogenated and essentially all of the other C2 and heavier unsaturated hydrocarbons are hydrogenated. Any unreacted hydrogen can be separated by a membrane and then reacted with separated C9 and heavier materials to produce hydrogenated pyrolysis gasoline.

Abstract translation: 在热裂化的进料流中C2至C5和较重的炔和二烯被氢化而不显着氢化C2和C3烯烃。 另外，C4和较重的烯烃可以被氢化。 具体来说，在含有氢化催化剂的蒸馏反应塔中，将烯烃装置中的裂化气体进料氢化，而不需要将氢气从进料中分离出来，而乙烯和丙烯没有明显的氢化。 使用称为催化蒸馏氢化的组合反应分级步骤同时进行反应和分离，同时保持氢化条件，使得乙烯和丙烯保持基本上未氢化，并且基本上所有其它的C2和较重的不饱和烃都被氢化。 任何未反应的氢气可以通过膜分离，然后与分离的C9和较重物质反应，生成氢化裂解汽油。