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    • 44. 发明授权
    • Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons
    • 从C8和C9芳烃的混合物中分离对二甲苯的方法
    • US07838713B2
    • 2010-11-23
    • US12146901
    • 2008-06-26
    • Leonid BreslerStanley J. Frey
    • Leonid BreslerStanley J. Frey
    • C07C7/12
    • C07C7/12C07C15/08
    • The process includes at least two adsorptive separation zones to separate para-xylene from a feed stream comprising C8 aromatic hydrocarbons and at least one C9 aromatic hydrocarbon component. An adsorbent comprising X or Y zeolite and a heavy desorbent are used in the first adsorptive separation zone to produce an extract stream comprising para-xylene and a raffinate stream comprising para-xylene depleted C8 aromatic hydrocarbons, the C9 aromatic hydrocarbon, and the desorbent. The raffinate stream is separated in a raffinate distillation zone to produce a stream comprising the first desorbent component and the C9 aromatic hydrocarbon which stream is further separated in a second adsorptive distillation zone to produce a stream comprising the desorbent and a C9 aromatic hydrocarbon stream.
    • 该方法包括至少两个吸附分离区,以从包含C8芳族烃和至少一种C9芳族烃组分的进料流中分离对二甲苯。 在第一吸附分离区中使用包含X或Y沸石和重质解吸剂的吸附剂,以产生包含对二甲苯的萃取物料流和包含对二甲苯贫化的C 8芳族烃,C 9芳族烃和解吸剂的萃余物料流。 萃余液流在萃余液蒸馏区中分离以产生包含第一解吸附组分和C 9芳族烃的物流,该物流在第二吸附蒸馏区进一步分离以产生包含解吸剂和C 9芳烃流的物流。
    • 45. 发明申请
    • Process for Separating Para-Xylene from a Mixture of C8 and C9 Aromatic Hydrocarbons
    • 从C8和C9芳族烃的混合物中分离对二甲苯的方法
    • US20100249483A1
    • 2010-09-30
    • US12719410
    • 2010-03-08
    • Leonid BreslerStanley J. Frey
    • Leonid BreslerStanley J. Frey
    • C07C7/04
    • C07C7/005C07C7/13C07C15/08
    • The invention is an adsorptive separation process for producing a para-xylene product from a feed stream comprising para-xylene, at least one other C8 aromatic, and a C9 aromatic. An adsorbent comprising X or Y zeolite and a desorbent comprising para-diethylbenzene (p-DEB) are used in an adsorptive separation zone to produce an extract stream comprising para-xylene, p-DEB, and the C9 aromatic and a raffinate stream comprising the at least one other C8 aromatic, the C9 aromatic, and p-DEB. The extract stream is separated in an extract distillation zone to produce a second desorbent stream comprising the C9 aromatic and p-DEB and the raffinate stream is separated in a raffinate distillation zone to produce a third desorbent stream comprising the C9 aromatic and p-DEB. At least a portion of at least one of the second desorbent stream and the third desorbent stream is further separated in a desorbent distillation zone to produce a stream comprising the C9 aromatic.
    • 本发明是用于从包含对二甲苯,至少一种其它C 8芳族和C 9芳族的进料流产生对二甲苯产物的吸附分离方法。 包含X或Y沸石的吸附剂和包含对二乙基苯(p-DEB)的解吸剂用于吸附分离区,以产生包含对二甲苯,p-DEB和C9芳族化合物的萃取物料流和含有 至少一种其它C 8芳族,C 9芳族和p-DEB。 萃取物流在提取蒸馏区中分离以产生包含C 9芳族和p-DEB的第二解吸流,并且萃余物流在萃余液蒸馏区中分离以产生包含C 9芳族和p-DEB的第三解吸流。 第二解吸流和第三解吸流中的至少一个的至少一部分在解吸蒸馏区进一步分离以产生包含C 9芳族的物流。
    • 46. 发明申请
    • Process for separating para-xylene from a mixture of C8 and C9 aromatic hydrocarbons
    • 从C8和C9芳烃的混合物中分离对二甲苯的方法
    • US20090326306A1
    • 2009-12-31
    • US12146901
    • 2008-06-26
    • Leonid BreslerStanley J. Frey
    • Leonid BreslerStanley J. Frey
    • C07C7/11
    • C07C7/12C07C15/08
    • The process includes at least two adsorptive separation zones to separate para-xylene from a feed stream comprising C8 aromatic hydrocarbons and at least one C9 aromatic hydrocarbon component. An adsorbent comprising X or Y zeolite and a heavy desorbent are used in the first adsorptive separation zone to produce an extract stream comprising para-xylene and a raffinate stream comprising para-xylene depleted C8 aromatic hydrocarbons, the C9 aromatic hydrocarbon, and the desorbent. The raffinate stream is separated in a raffinate distillation zone to produce a stream comprising the first desorbent component and the C9 aromatic hydrocarbon which stream is further separated in a second adsorptive distillation zone to produce a stream comprising the desorbent and a C9 aromatic hydrocarbon stream.
    • 该方法包括至少两个吸附分离区,以从包含C8芳族烃和至少一种C9芳族烃组分的进料流中分离对二甲苯。 在第一吸附分离区中使用包含X或Y沸石和重质解吸剂的吸附剂,以产生包含对二甲苯的萃取物料流和包含对二甲苯贫化的C 8芳族烃,C 9芳族烃和解吸剂的萃余物料流。 萃余液流在萃余液蒸馏区中分离以产生包含第一解吸附组分和C 9芳族烃的物流,该物流在第二吸附蒸馏区进一步分离以产生包含解吸剂和C 9芳烃流的物流。
    • 49. 发明授权
    • Process to compensate for a discrete non-separating section in simulated moving bed adsorptive separation processes
    • 在模拟移动床吸附分离过程中补偿离散非分离段的方法
    • US06896812B1
    • 2005-05-24
    • US10621622
    • 2003-07-17
    • Stanley J. Frey
    • Stanley J. Frey
    • B01D15/08B01D15/18
    • B01D15/1828B01D2215/024
    • Fluctuations, such as perturbations in the quality of the extract and/or raffinate streams removed from the circuit in a simulated moving bed (SMB) adsorptive process having at least one discrete non-separating section are eliminated or significantly reduced. This is accomplished by increasing the fluid flow rate in a portion of the circuit in response to the location of a discrete non-separating section and changing the flow rate of at least one stream that is in fluid communication with the circuit consistent with the increased flow rate in the portion of the circuit. Multiple adjustments to the flow rates of the input and/or output streams and multiple increases in the fluid flow rates in portions of the circuit may be used simultaneously when for example there is more than one discrete non-separating section.
    • 在具有至少一个离散非分离部分的模拟移动床(SMB)吸附方法中,从电路中除去的提取物和/或提余液流的质量的波动被消除或显着减少。 这是通过响应于离散的非分离部分的位置增加电路的一部分中的流体流速来实现的,并且改变与电路流体连通的至少一个流的流速,与流动的流量一致 率在电路部分。 当例如存在多于一个离散的非分离部分时,可以同时使用输入和/或输出流的流量的多个调整以及电路部分中的流体流速的多次增加。
    • 50. 发明授权
    • Process for removal of nitriles from etherification feedstocks
    • 从醚化原料中除去腈的方法
    • US5569790A
    • 1996-10-29
    • US237532
    • 1994-05-03
    • Stanley J. FreyPaul R. CottrellDavid A. Hamm
    • Stanley J. FreyPaul R. CottrellDavid A. Hamm
    • C07C41/06C07C41/00
    • C07C41/06C07C41/38
    • A process is disclosed for improving catalyst performance and yields in the manufacture of motor gasoline components. More particularly the process is directed to the removal of trace amounts of acetonitrile or acetone or propionitrile from a hydrocarbon feedstock such as a C.sub.4 -C.sub.6 product fraction from a fluid catalytic cracking unit, which may be used subsequently in an etherification process for the production of ethers such as MTBE and TAME. The hydrocarbon feedstock is passed to a water wash zone for the removal of the trace amounts of acetonitrile or acetone or propionitrile and the spent water comprising the nitriles is contacted with a nitrile-lean stream to regenerate the wash water. A portion of the spent water stream is withdrawn to reduce the nitrile level in the nitrile-lean water stream. The combined water wash, regeneration, and water recycle steps provide protection for the etherification zone catalyst with a significantly reduced requirement for wash water and spent wash water disposal.
    • 公开了一种用于改善汽油汽油组分制造中的催化剂性能和产率的方法。 更具体地,该方法涉及从烃原料例如来自流化催化裂化装置的C4-C6产物级分除去痕量的乙腈或丙酮或丙腈,其可以随后在醚化方法中用于生产 醚类如MTBE和TAME。 将烃原料通入水洗区,以除去痕量的乙腈或丙酮或丙腈,并将包含腈的废水与富含腈的物流接触以再生洗涤水。 一部分废水流被抽出以降低腈水流中的腈水平。 组合的水洗,再生和水循环步骤为醚化区催化剂提供了保护,显着降低了对洗涤水和废洗水处理的需求。