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    SILVER-BASED ETHYLENE OXIDE CATALYST HAVING REDUCED SODIUM CONTENT
    32.
    发明申请
    SILVER-BASED ETHYLENE OXIDE CATALYST HAVING REDUCED SODIUM CONTENT 有权
    具有降低的钠含量的基于银的乙烯氧化物催化剂

    公开(公告)号：US20140343308A1

    公开(公告)日：2014-11-20

    申请号：US14279826

    申请日：2014-05-16

    Applicant: Scientific Design Company, Inc.

    Inventor： Nabil Rizkalla ,  Andrzej Rokicki

    IPC: B01J23/50 ,  C07D301/10 ,  B01J21/04

    CPC classification number: B01J23/50 ,  C07D301/10 ,  Y02P20/52

    Abstract: A silver-based ethylene oxide catalyst that can be used in the vapor phase conversion of ethylene to ethylene oxide in the presence of oxygen is provided that includes a carrier; a catalytic effective amount of silver; and a promoting amount of at least one promoter, wherein the catalyst has a surface sodium content of 100 ppm or less.

    Abstract translation: 提供了可用于在氧存在下乙烯至环氧乙烷气相转化的银基环氧乙烷催化剂，其包括载体; 催化有效量的银; 和促进量的至少一种促进剂，其中催化剂的表面钠含量为100ppm以下。

    Corrugated grid support for vertical boiling reactor
    34.
    发明授权
    Corrugated grid support for vertical boiling reactor 有权

    公开(公告)号：US12030028B2

    公开(公告)日：2024-07-09

    申请号：US17564658

    申请日：2021-12-29

    Applicant: Scientific Design Company, Inc.

    Inventor： Mohammad Ganjvar ,  Jiacheng Ni

    IPC: B01J19/00 ,  F28D7/10

    CPC classification number: B01J19/0013 ,  B01J19/006 ,  F28D7/10 ,  B01J2219/00081 ,  B01J2219/00763

    Abstract: A baffle (i.e., tube support) for use in a shell-and-tube heat exchange reactor, such as, for example, an ethylene oxide (EO) reactor, is provided that accommodates reduced tube pitch, and thus more catalyst packed tubes can be inside the reactor. The baffle, which can be referred to herein as a corrugated grid support, includes a plurality of corrugated stainless steel strips which sit into each other and form a grid pattern having tube openings. Each tube opening is configured to permit a catalyst packed tube to be inserted therein, while allowing a sufficient open area along the shell side of the tube to permit coolant to flow through the reactor.

    TUBE TO TUBE SHEET WELDING FOR FABRICATION OF VERTICAL BOILING REACTOR WITH REDUCED TUBE PITCH
    35.
    发明公开
    TUBE TO TUBE SHEET WELDING FOR FABRICATION OF VERTICAL BOILING REACTOR WITH REDUCED TUBE PITCH 审中-公开

    公开(公告)号：US20240091886A1

    公开(公告)日：2024-03-21

    申请号：US18524844

    申请日：2023-11-30

    Applicant: Scientific Design Company, Inc.

    Inventor： Mohammad Ganjvar

    IPC: B23K33/00 ,  B01J19/00 ,  B01J19/24

    CPC classification number: B23K33/006 ,  B01J19/0053 ,  B01J19/2415 ,  B01J2219/00081 ,  B23K2101/14

    Abstract: Reduced tube pitch within a shell-and-tube heat exchange reactor such as, for example, an EO reactor, is provided by utilizing a welding material that has a high tensile (i.e., a tensile strength of greater than 600 MPa). Reduced tube pitch allows for more elongated tubes (the tubes are filled with a catalyst) to be present in a reactor, and thus a smaller reactor can be manufactured. Notably, the use of a high tensile strength welding material allows the implementation of a small welding groove located between a beveled sidewall of a beveled upper portion of an opening provided in a tube sheet overlay material (that is located atop a tube sheet) and an outermost sidewall of the elongated tube passing through the opening in the tube sheet overlay material.

    Removable impingement basket for ethylene oxide (EO) reactors
    36.
    发明授权
    Removable impingement basket for ethylene oxide (EO) reactors 有权

    公开(公告)号：US11559799B2

    公开(公告)日：2023-01-24

    申请号：US17130961

    申请日：2020-12-22

    Applicant: Scientific Design Company, Inc.

    Inventor： Mohammad Ganjvar

    IPC: B01J8/06 ,  C07D301/10 ,  B01J37/02 ,  B01J23/50 ,  B01J37/08

    Abstract: An ethylene oxide (EO) reactor is provided in which a removable impingement basket is configured to be inserted into the reactor inlet pipe of the EO reactor. The removable impingement basket provides protection for the silver-based catalyst filled tubes and other components that are present inside the EO reactor as well as providing another access point into the EO reactor. The removable impingement basket also can provide better distribution of the inlet gas as compared to an EO reactor containing a non-removable impingement plate.

    EPOXIDATION PROCESS
    37.
    发明申请
    EPOXIDATION PROCESS 审中-公开

    公开(公告)号：US20190337912A1

    公开(公告)日：2019-11-07

    申请号：US16511542

    申请日：2019-07-15

    Applicant: Scientific Design Company, Inc.

    Inventor： Shaun McGovern ,  Mansoor Husain ,  John Sullivan

    IPC: C07D301/10 ,  C07D301/32 ,  B01J8/06 ,  C07C7/12

    Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.

    Epoxidation process
    39.
    发明授权
    Epoxidation process 有权

    公开(公告)号：US10351542B2

    公开(公告)日：2019-07-16

    申请号：US15672945

    申请日：2017-08-09

    Applicant: Scientific Design Company, Inc.

    Inventor： Shaun McGovern ,  Mansoor Husain ,  John Sullivan

    IPC: C07D301/10 ,  B01J8/06 ,  C07C7/12 ,  C07D301/32

    Abstract: A method for the oxidation of ethylene to form ethylene oxide which comprises: providing an aqueous stream containing ethylene glycol and impurities; introducing the aqueous stream in a first ion exchange treatment bed to reduce the content of these impurities; determining whether an outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm; upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 5 μS/cm, introducing the outlet of the first ion exchange treatment bed into a second ion exchange treatment bed; and upon determining that the outlet of the first ion exchange treatment bed has a conductivity greater than about 60 μS/cm, redirecting the introduction of the aqueous stream to the second ion exchange treatment bed and regenerating the first ion exchange bed.

    SILVER IMPREGNATION SOLUTION CONTAINING HIGH-BOILING OXYGENATED ADDITIVE AND ITS USE IN ETHYLENE OXIDE CATALYST PREPARATION
    40.
    发明申请
    SILVER IMPREGNATION SOLUTION CONTAINING HIGH-BOILING OXYGENATED ADDITIVE AND ITS USE IN ETHYLENE OXIDE CATALYST PREPARATION 审中-公开

    公开(公告)号：US20190176130A1

    公开(公告)日：2019-06-13

    申请号：US15839987

    申请日：2017-12-13

    Applicant: Scientific Design Company, Inc.

    Inventor： Evgeny BELETSKIY

    IPC: B01J23/50 ,  B01J37/02 ,  C07D301/02

    Abstract: A silver impregnation solution containing: (i) silver ions, (ii) a polar organic additive containing two to four carbon atoms and two to four functional groups selected from hydroxy, carboxylic acid, and amine groups, provided that a carboxylic acid group can only be present along with a hydroxy or amine group, and provided that an amine group can only be present along with a hydroxy or carboxylic acid group; and (iii) water; wherein components (i) and (ii) are water soluble and dissolved in the impregnation solution. Also described herein is a method for producing a catalyst effective in the oxidative conversion of ethylene to ethylene oxide, the method comprising subjecting a refractory carrier impregnated with the above-described silver impregnation solution to a calcination process. Also described herein is a method for converting ethylene to ethylene oxide by use of the foregoing silver catalyst, as produced by the above-described silver impregnation solution.

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