公开(公告)号：US20190330170A1

公开(公告)日：2019-10-31

申请号：US16399045

申请日：2019-04-30

Applicant: Scientific Design Company, Inc.

Inventor： Chun Chau Chan ,  Eunice Yamada ,  Barry Jay Billig

IPC: C07D301/08 ,  B01D53/14 ,  B01D53/18 ,  B01D3/06 ,  B01D3/34 ,  C07D301/32

Abstract: An improved process for the recovery of ethylene oxide from the aqueous scrubbing solution in which the ethylene oxide is recovered into a vaporous stream highly enriched in ethylene oxide.

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.

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.

公开(公告)号：US20190070588A1

公开(公告)日：2019-03-07

申请号：US16178148

申请日：2018-11-01

Applicant: Scientific Design Company, Inc.

Inventor： Wojciech L. Suchanek ,  Matthew Julian

IPC: B01J21/04 ,  B01J35/10 ,  B01J37/08 ,  C07D301/22 ,  C04B41/45 ,  B01J23/36 ,  B01J19/00 ,  B01J23/04 ,  C04B38/00 ,  B01J23/50 ,  C07D301/10 ,  C04B41/88 ,  C04B38/08 ,  B01J35/04 ,  B01J37/00

Abstract: A precursor mixture for producing a porous body, wherein the precursor mixture comprises: (i) milled alpha alumina powder having a particle size of 0.1 to 6 microns, (ii) boehmite powder that functions as a binder of the alpha alumina powders, and (iii) burnout materials having a particle sizes of 1-10 microns. In some embodiments, an unmilled alpha alumina powder having a particle size of 10 to 100 microns is also included in said precursor mixture. Also described herein is a method for producing a porous body in which the above-described precursor mixture is formed to a given shape, and subjected to a heat treatment step in which the formed shape is sintered to produce the porous body.

公开(公告)号：US10040773B2

公开(公告)日：2018-08-07

申请号：US15054447

申请日：2016-02-26

Applicant: Scientific Design Company, Inc.

Inventor： Wojciech L. Suchanek ,  Nabil Rizkalla ,  Andrzej Rokicki

IPC: B01J23/50 ,  C07D301/10 ,  B01J23/68 ,  B01J35/10 ,  B01J21/04 ,  B01J35/00 ,  B01J35/02

Abstract: A silver-based ethylene epoxidation catalyst is provided that exhibits improved performance, i.e., selectivity and activity decline. The catalyst that exhibits the improved performance includes greater than about 20% by weight of silver disposed on an alpha-alumina carrier, and a promoting amount of one or more promoters disposed on the alpha-alumina carrier. The silver is present on the alpha-alumina carrier as silver particles having a diameter of greater than about 150 nm and a distribution density of about 20 particles per 1 square micron or less.

公开(公告)号：US20180186759A1

公开(公告)日：2018-07-05

申请号：US15689758

申请日：2017-08-29

Applicant: SCIENTIFIC DESIGN COMPANY, INC. ,  Noritake Co., Limited

Inventor： Serguei PAK ,  Yasuyuki KATO

IPC: C07D301/10 ,  B01J23/66 ,  B01J21/12 ,  B01J21/08

CPC classification number: C07D301/10 ,  B01J21/08 ,  B01J21/12 ,  B01J23/50 ,  B01J23/58 ,  B01J23/66 ,  B01J23/688 ,  Y02P20/52

Abstract: A carrier for an ethylene epoxidation catalyst, the carrier comprising a porous alumina body formed of sintered particles of alumina in a substantial absence of inorganic binder species other than alumina, wherein the substantial absence of inorganic binder species corresponds to an amount of less than 0.6 wt % inorganic binder species other than alumina and comprises at least a substantial absence of silicon-containing species.

公开(公告)号：US20180141025A1

公开(公告)日：2018-05-24

申请号：US15579419

申请日：2016-06-02

Applicant: SCIENTIFIC DESIGN COMPANY, INC.

Inventor： Christelle VERRIER ,  Wojciech L. SUCHANEK

IPC: B01J21/04 ,  B01J23/50 ,  B01J23/36 ,  B01J23/04 ,  B01J35/10 ,  B01J37/00 ,  C07D301/10 ,  B01J19/00

CPC classification number: B01J21/04 ,  B01J19/0013 ,  B01J23/04 ,  B01J23/36 ,  B01J23/50 ,  B01J35/04 ,  B01J35/1009 ,  B01J35/1038 ,  B01J35/1042 ,  B01J35/1047 ,  B01J35/108 ,  B01J37/0018 ,  B01J37/086 ,  B01J2219/00051 ,  C04B38/00 ,  C04B38/08 ,  C04B41/009 ,  C04B41/4535 ,  C04B41/5116 ,  C04B41/88 ,  C04B2111/0081 ,  C07D301/10 ,  C07D301/22 ,  C04B35/10 ,  C04B38/0096 ,  C04B41/455

Abstract: A method is provided for improving the performance of a silver-based epoxidation catalyst comprising a carrier. The carrier includes at least 80 percent alpha alumina and has a pore volume from 0.3 mL/g to 1.2 mL/g, a surface area from 0.3 m2/g to 3.0 m2/g, and a pore architecture that provides at least one of a tortuosity of 7 or less, a constriction of 4 or less and a permeability of 30 mdarcys or greater. A catalytic amount of silver and a promoting amount of one or more promoters is disposed on and/or in said carrier. The method further includes the steps of initiating an epoxidation reaction by reacting a feed gas composition containing ethylene and oxygen present in a ratio of from about 3.5:1 to about 12:1, in the presence of the silver-based epoxidation catalyst at a temperature of about 200° C. to about 230° C., and subsequently increasing the temperature either stepwise or continuously.

公开(公告)号：US20180044309A1

公开(公告)日：2018-02-15

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 ,  C07D301/32 ,  B01J8/06 ,  C07C7/12

CPC classification number: C07D301/10 ,  B01D2259/402 ,  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.

公开(公告)号：US20180044272A1

公开(公告)日：2018-02-15

申请号：US15672927

申请日：2017-08-09

Applicant: Scientific Design Company, Inc.

Inventor： Saurabh KATIYAR

IPC: C07C41/42 ,  B01D5/00 ,  C07C43/13

CPC classification number: C07C41/42 ,  B01D3/06 ,  B01D3/148 ,  B01D5/009 ,  B01D19/0015 ,  C07C43/13 ,  C07C43/11

Abstract: A process for the preparation of glycol ethers by providing a diethylene glycol ether column bottoms mixture comprising triethylene glycol ether, tetraethylene glycol ether, and glycol ether catalyst; separating, in a stripping column, the column bottom mixture into a triethylene glycol ether vapor overhead and a liquid bottoms; and separating, in an evaporator, the liquid bottoms into a residue containing about 80% to about 90% tetraethylene glycol ether and an evaporator overhead comprising at least about 60% tetraethylene glycol ether.

公开(公告)号：US09892238B2

公开(公告)日：2018-02-13

申请号：US14296894

申请日：2014-06-05

Applicant: Scientific Design Company, Inc.

Inventor： Sandip K. Lahiri ,  Mansoor Husain

IPC: G06F19/00 ,  G06N3/02 ,  G06N3/08 ,  G05B23/02

CPC classification number: G06F19/707 ,  G05B23/0216 ,  G05B23/024 ,  G05B23/0254 ,  G05B2219/32201 ,  G06F19/702 ,  G06N3/02 ,  G06N3/08 ,  Y02P90/22

Abstract: A system for monitoring a process determined by a set of process data in a multidimensional process data domain pertaining to process input-output data, the system comprising: means for acquiring a plurality of historic process data sets; means for obtaining a transformation from the multidimensional process data domain to a model data domain of lower dimension by performing multivariate data analysis; and means for transforming a current process data set to a model data set to monitor the process.