公开(公告)号：US10655072B2

公开(公告)日：2020-05-19

申请号：US16430130

申请日：2019-06-03

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： David B. Spicer ,  Changmin Chun

IPC: C10G9/20 ,  C10G9/14 ,  C10G9/16 ,  B23K9/04 ,  C21D9/50 ,  C22C30/00 ,  C10G9/36 ,  B23K10/02 ,  C22C38/44 ,  B01J19/24 ,  C22C19/05 ,  C23C28/00 ,  C23C30/00 ,  F16L9/02 ,  F28F1/40 ,  F28F21/08 ,  C22C19/03 ,  C22C38/02 ,  C22C38/04 ,  C22C38/40 ,  C22C38/48 ,  C22C38/50 ,  B01F5/06 ,  B23K101/06 ,  B23K101/20 ,  B23K103/04

Abstract: The invention relates weldments useful as heat transfer tubes in pyrolysis furnaces. The invention relates to tubes that are useful in pyrolysis furnaces. The weldments include a tubular member and at least one mixing element. The tubular member comprises an aluminum-containing alloy. The mixing element comprises an aluminum-containing alloy. The mixing element's aluminum-containing alloy can be the same as or different from the tubular member's aluminum-containing alloy. Other aspects of the invention relate to pyrolysis furnaces which include such weldments, and the use of such pyrolysis furnaces for hydrocarbon conversion processes such as steam cracking.

公开(公告)号：US12000027B2

公开(公告)日：2024-06-04

申请号：US17772077

申请日：2020-10-29

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Changmin Chun ,  Ning Ma ,  Jorge J. Perdomo ,  John S. Coleman ,  Larry L. Iaccino

IPC: C22C29/00 ,  B23K26/34 ,  C22C30/02 ,  B23K101/34 ,  B23K103/16

CPC classification number: C22C29/005 ,  B23K26/34 ,  C22C30/02 ,  B23K2101/35 ,  B23K2103/166 ,  C22C2204/00

Abstract: Methods and compositions are provided for improving metal dusting corrosion, abrasion resistance and/or erosion resistance for various materials, preferably for applications relating to high-temperature reactors, including dense fluidized bed reactor components. In particular, cermets comprising (a) at least one ceramic phase selected from the group consisting of metal carbides, metal nitrides, metal borides, metal oxides, metal carbonitrides, and mixtures of thereof and (b) at least one metal alloy binder phase are provided. Ceramic phase materials include chromium carbide (Cr23C6). Metal alloy binder phase materials include β-NiAl intermetallic alloys and Ni3Sn2 intermetallic alloys, as well as alloys that contain α-Cr and/or γ′-Ni3Al hard phases. Preferably, bimetallic materials are provided when the cermet compositions are applied using a laser, e.g., a laser cladding method such as high power direct diode (HPDD) laser, or by plasma-based methods such as plasma transfer arc (PTA) welding and powder plasma welding (PPW).

公开(公告)号：US11981875B2

公开(公告)日：2024-05-14

申请号：US17311132

申请日：2019-12-13

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Jorge J. Perdomo ,  Ivan A. Morales ,  Changmin Chun

IPC: C22C30/00 ,  C10G9/20

CPC classification number: C10G9/203 ,  C22C30/00

Abstract: Reactor components formed using an erosion resistant alloy having desirable high temperature mechanical strength are provided. The erosion resistant components can include, but are not limited to, tubes, reactors walls, fittings, and/or other components having surfaces that can be exposed to a high temperature reaction environment in the presence of hydrocarbons and/or that can provide pressure containment functionality in processes for upgrading hydrocarbons in a high temperature reaction environment. The erosion resistant alloy used for forming the erosion resistant component can include 42.0 to 46.0 wt. % nickel; 32.1 to 35.2 wt. % chromium; 0.5 to 2.9 wt. % carbon; 0 to 2.0 wt. % titanium; 0 to 4.0 wt. % tungsten, and iron, with at least one of titanium and tungsten is present in an amount of 1.0 wt. % or more. The iron can correspond to the balance of the composition. Optionally, the erosion resistant alloy can provide further improved properties based on the presence of at least one strengthening mechanism within the alloy, such as a carbide strengthening mechanism, a solid solution strengthening mechanism, a gamma prime strengthening mechanism, or a combination thereof.

公开(公告)号：US20220401924A1

公开(公告)日：2022-12-22

申请号：US17627832

申请日：2020-07-30

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Brian M. P. Weiss ,  Changmin Chun ,  Sophie Liu ,  Federico Barrai ,  Paul F. Keusenkothen ,  Zachary D. Young

IPC: B01J23/34 ,  B01J23/00 ,  B01J35/04 ,  B01J23/10 ,  B01J21/02 ,  B01J21/00 ,  B01J37/02 ,  B01J37/08 ,  B01J38/18 ,  B01J38/30

Abstract: An active material useful in an oxidative dehydrogenation reactor system has an active phase, a support phase, and an intermediate composite phase. The active phase includes a transition metal oxide such as manganese oxide, which is reversibly oxidizable and/or reducible between oxidized and reduced states. The support phase includes an oxide of a IUPAC Group 2-14 element. The composite phase is a mixed metal oxide of the transition metal and the Group 2-14 element. The active phase can also include a promoter such as Na-W04 and/or a selectivity modifier such as A1 or ceria. Also, a reactor including the active material in a reactor, a method of making the active material, and a method of using the active material in a regenerative reaction process.

公开(公告)号：US10577292B2

公开(公告)日：2020-03-03

申请号：US16321729

申请日：2017-08-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Changmin Chun ,  Dhaval A. Bhandari ,  Federico Barrai

IPC: C07C4/04 ,  C07C1/24 ,  C07C5/02 ,  C10G9/00 ,  C07C2/76 ,  B01J19/02 ,  B01J19/24 ,  C04B35/56 ,  C04B35/58 ,  B01J6/00 ,  C10G9/26 ,  B01J8/04 ,  B01J8/06 ,  C10G11/00 ,  C10G35/02

Abstract: The invention relates to hydrocarbon conversion, to equipment and materials useful for hydrocarbon conversion, and to processes for carrying out hydrocarbon conversion, e.g., hydrocarbon pyrolysis processes. The hydrocarbon conversion is carried out in a reactor which includes at least one channeled member that comprises refractory and has an open frontal area ≤55%. The refractory can include non-oxide ceramic.

公开(公告)号：US20200024524A1

公开(公告)日：2020-01-23

申请号：US16320136

申请日：2017-08-15

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Federico Barrai ,  Elizabeth G. Mahoney ,  John S. Coleman ,  Dhaval A. Bhandari ,  Brian M. Weiss ,  Changmin Chun ,  Frank Hershkowitz

IPC: C10G9/26 ,  C10G9/20

Abstract: The invention relates to hydrocarbon pyrolysis, to equipment and materials useful for hydrocarbon pyrolysis, to processes for carrying out hydrocarbon pyrolysis, and to the use of hydrocarbon pyrolysis for, e.g., hydrocarbon gas upgrading. The pyrolysis is carried out in a reactor which includes at least one thermal mass having an open frontal area ≤55%.

公开(公告)号：US09809759B2

公开(公告)日：2017-11-07

申请号：US15061560

申请日：2016-03-04

Applicant: ExxonMobil Chemical Patents Inc.

Inventor： Paul F. Keusenkothen ,  Frank Hershkowitz ,  Gary D. Mohr ,  Changmin Chun ,  Jeffrey W. Frederick

IPC: C10G9/18 ,  B01J19/02 ,  C07C4/04 ,  F23L15/02 ,  B01J19/24 ,  B01J4/00 ,  B01J8/04 ,  C10G9/26

CPC classification number: C10G9/18 ,  B01J4/004 ,  B01J8/0423 ,  B01J8/0438 ,  B01J8/0442 ,  B01J8/0453 ,  B01J8/0457 ,  B01J19/02 ,  B01J19/2485 ,  B01J2208/00106 ,  B01J2208/00309 ,  B01J2208/00327 ,  B01J2208/00495 ,  B01J2208/0053 ,  B01J2208/00911 ,  B01J2219/0004 ,  B01J2219/00117 ,  B01J2219/00121 ,  B01J2219/00139 ,  B01J2219/00155 ,  B01J2219/00159 ,  B01J2219/0281 ,  B01J2219/182 ,  B01J2219/185 ,  B01J2219/1923 ,  B01J2219/194 ,  B01J2219/1943 ,  B01J2219/1947 ,  C07C4/04 ,  C10G9/26 ,  F23L15/02 ,  Y02E20/348

Abstract: The present disclosure relates to reactor components and their use, e.g., in regenerative reactors. A process and apparatus for utilizing different wetted areas along the flow path of a fluid in a pyrolysis reactor, e.g., a thermally regenerating reactor, such as a regenerative, reverse-flow reactor, is described.