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公开(公告)号:US20130172647A1
公开(公告)日:2013-07-04
申请号:US13774723
申请日:2013-02-22
IPC分类号: C07C6/04
CPC分类号: C07C6/04 , C07C2/36 , C07C5/2512 , C07C11/06 , C07C11/08 , C07C2521/08 , C07C2521/10 , C07C2523/30 , C07C2531/14 , C07C2531/24 , Y02P20/52
摘要: Processes and systems for forming propylene are described herein. The processes generally include reacting a metathesis feed stream including at least 95 wt. % 2-butene with ethylene in the presence of a metathesis catalyst to form a metathesis product stream including propylene, and recovering propylene from the process.
摘要翻译: 本文描述了用于形成丙烯的方法和体系。 该方法通常包括使包含至少95wt。 在复分解催化剂存在下,将乙烯与乙烯进行反应以形成包含丙烯的复分解产物流,并从该方法回收丙烯。
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公开(公告)号:US08273936B2
公开(公告)日:2012-09-25
申请号:US12951106
申请日:2010-11-22
IPC分类号: C10G9/36
CPC分类号: C10G9/36 , C10G9/20 , C10G2300/301 , C10G2300/807 , C10G2400/20
摘要: A process for cracking a heavy hydrocarbon feed is disclosed. The heavy hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid stream. The first liquid stream is passed to a second zone of the vaporization unit and contacted intimately with a countercurrent steam to produce a second vapor stream and a second liquid stream. The second vapor stream is contacted with a wash liquid in a rectification section to form a rectified stream. The first vapor stream and the rectified stream are cracked in the radiant section of the steam cracker to produce a cracked effluent.
摘要翻译: 公开了一种用于裂解重质烃进料的方法。 将重质烃进料通入蒸发单元的第一区域以分离第一蒸气流和第一液体流。 将第一液体流送至蒸发单元的第二区域,并与逆流蒸汽紧密接触以产生第二蒸气流和第二液体流。 第二蒸气流与整流段中的洗涤液体接触以形成整流流。 第一蒸汽流和精馏流在蒸汽裂解器的辐射段中裂解,产生裂化流出物。
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公开(公告)号:US20120168348A1
公开(公告)日:2012-07-05
申请号:US12980514
申请日:2010-12-29
申请人: Steven T. Coleman
发明人: Steven T. Coleman
IPC分类号: C10G11/20
CPC分类号: C10G11/20 , C10G51/06 , C10G69/00 , C10G2300/301 , C10G2300/807 , C10G2400/02 , C10G2400/20
摘要: A process for cracking a heavy hydrocarbon feed comprising a vaporization step, a catalytic cracking step, a hydrotreating step, and a steam cracking step is disclosed. The heavy hydrocarbon feed is passed to a first zone of a vaporization unit to separate a first vapor stream and a first liquid stream. The first liquid stream is passed to a second zone of the vaporization unit and contacted with a counter-current steam to produce a second vapor stream and a second liquid stream. The first vapor stream and the second vapor stream are cracked in the radiant section of the steam cracker to produce a cracked effluent. The second liquid stream is catalytically cracked to produce a cracked product. The cracked product is distilled to produce a overhead stream, a light cycle oil, and a heavy cycle oil. The light cycle oil is reacted with hydrogen in the presence of a catalyst to produce a hydrotreated light cycle oil. The hydrotreated light cycle oil and the overhead stream are fed to the vaporization unit.
摘要翻译: 公开了一种用于裂化重质烃进料的方法,包括蒸发步骤,催化裂化步骤,加氢处理步骤和蒸汽裂解步骤。 将重质烃进料通入蒸发单元的第一区域以分离第一蒸气流和第一液体流。 第一液体流被传送到蒸发单元的第二区域并与逆流蒸汽接触以产生第二蒸气流和第二液体流。 第一蒸汽流和第二蒸汽流在蒸汽裂解器的辐射部分中裂开以产生裂化流出物。 第二液体流被催化裂化以产生裂化产物。 将裂化产物蒸馏以产生塔顶馏出物流,轻循环油和重循环油。 轻链循环油在催化剂存在下与氢气反应以产生加氢处理的轻循环油。 将加氢处理的轻循环油和塔顶馏分油进料至汽化装置。
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公开(公告)号:US07074976B2
公开(公告)日:2006-07-11
申请号:US10643483
申请日:2003-08-19
IPC分类号: C07C6/04
CPC分类号: C07C11/06 , C07C6/04 , C07C2521/10 , C07C2521/12 , C07C2523/30 , C07C2523/42 , C07C2523/44 , C07C2523/46 , C07C2523/755 , C07C2529/06 , C10G2400/20
摘要: A method for making propylene from alpha olefins, internal linear olefins and isoolefins wherein the alpha olefins are subjected to a combination of hydrogenation and double bond isomerization to form additional internal linear olefins, the internal linear olefins are disproportionated with ethylene to form a propylene product, while the isoolefins are subjected to skeletal isomerization to form yet additional internal linear olefins to be converted into yet additional propylene.
摘要翻译: 由α-烯烃,内部线性烯烃和异烯烃制备丙烯的方法,其中α-烯烃经受氢化和双键异构化的组合以形成另外的内部线性烯烃,内部线性烯烃用乙烯歧化以形成丙烯产物, 而异烯烃进行骨架异构化以形成另外的内部直链烯烃,以转化为另外的丙烯。
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公开(公告)号:US07043938B2
公开(公告)日:2006-05-16
申请号:US10235591
申请日:2002-09-05
CPC分类号: F28F17/00
摘要: A method for thawing and removing frozen material from a cryogenic separation unit such as that found in an olefin production plant comprising employing a flushing agent to thaw and remove the frozen material, purging the flushing agent with a gas, and removing residual flushing agent with a solvent that is miscible with the flushing agent and has a freezing temperature substantially lower than the flushing agent.
摘要翻译: 一种用于从低温分离单元中解冻和除去冷冻材料的方法,例如在烯烃生产设备中发现的方法,包括使用冲洗剂来解冻和除去冷冻材料,用气体清洗冲洗剂,并用 溶剂,其与冲洗剂可混溶并且具有基本上低于冲洗剂的冷冻温度。
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