公开(公告)号：US20240024836A1

公开(公告)日：2024-01-25

申请号：US18257361

申请日：2021-12-14

Applicant: DOW GLOBAL TECHNOLOGIES LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Fermin Alejandro Sandoval ,  Richard Edwards Walter ,  Albert Meza

IPC: B01J8/18 ,  B01J8/26

CPC classification number: B01J8/1872 ,  B01J8/26 ,  B01J2208/00884

Abstract: A supported riser apparatus may be housed at least partially within a vessel. The supported riser apparatus may include a riser including a non-vertical riser segment, a non-linear riser segment, and a vertical riser segment. The supported riser apparatus may further include a support member comprising a proximal end and a distal end. The proximal end of the support member may be connected to the non-vertical riser segment and the angle between the support member and the non-vertical riser segment may be from 15 to 75. The supported riser apparatus may include a support structure connected to the riser and the support member and an expansion guide connected to an interior surface of the vessel. The expansion guide may be shaped and positioned such that the support member slides across the expansion guide as the support member undergoes thermal expansion or thermal contraction.

公开(公告)号：US20240316522A1

公开(公告)日：2024-09-26

申请号：US18573165

申请日：2022-06-24

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard E. Walter ,  Albert Meza ,  Fermin Sandoval ,  Liwei Li

IPC: B01J8/44

CPC classification number: B01J8/44 ,  B01J2208/00884 ,  B01J2208/0092 ,  B01J2208/00938

Abstract: According to one or more embodiments, a plate grid distributor for distributing a fluid in a vessel may include a plate and an internal support system. The internal support system may include a plurality of pillar supports extending vertically from at or near a bottom surface of the plate towards a floor of the vessel. One or more of the pillar supports may include a flexible upper member connecting a rigid top support bracket to a rigid intermediate beam and a flexible lower member connecting the rigid intermediate beam to the rigid base support. According to one or more other embodiments, a method of distributing a fluid through a plate grid distributor in a vessel may include passing the fluid into the vessel below the plate grid distributor and directing the fluid through the plate gird distributor.

公开(公告)号：US20240100496A1

公开(公告)日：2024-03-28

申请号：US18267534

申请日：2021-12-14

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard Edwards Walter ,  Fermin Alejandro Sandoval ,  Albert Meza

IPC: B01J8/18 ,  B01J8/26

CPC classification number: B01J8/1863 ,  B01J8/26 ,  B01J2208/00017 ,  B01J2208/00991

Abstract: According to one or more embodiments of the present disclosure, a riser may be operated by a method including repeatedly heating and cooling a riser between an operational temperature and a non-operational temperature. When the riser is heated from a non-operational temperature to an operational temperature, the riser undergoes thermal expansion. When the riser is cooled from an operational temperature to a non-operational temperature, the riser undergoes thermal contraction. The riser undergoes irreversible growth over repeated heating and cooling cycles, and the length of a lower section of an upper riser portion is sized to accommodate the irreversible growth from cycled thermal expansion of the riser.

公开(公告)号：US20250128222A1

公开(公告)日：2025-04-24

申请号：US18572568

申请日：2022-06-24

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard E. Walter ,  Albert Meza ,  Fermin Sandoval ,  Liwei Li

IPC: B01J3/02

Abstract: According to one or more embodiments, a plate grid distributor for distributing a fluid in a vessel or a plenum for removing a fluid from a vessel may include a plate and a skirt. The skirt may be in direct contact with the plate and may include a first portion and a second portion. The first portion may be in direct contact with the plate and the second portion may be in direct contact with the first portion. The first portion may have a first allowable stress and the second portion may have a second allowable stress. According to one or more other embodiments, a method of distributing a fluid through a plate grid distributor in a vessel may include passing the fluid into the vessel and directing the fluid through the plate grid distributor.

公开(公告)号：US20240307841A1

公开(公告)日：2024-09-19

申请号：US18573195

申请日：2022-06-24

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard E. Walter ,  Albert Meza ,  Fermin Sandoval ,  Liwei Li

IPC: B01J8/44 ,  B01J8/18

CPC classification number: B01J8/44 ,  B01J8/1881 ,  B01J2208/00884 ,  B01J2208/00902 ,  B01J2208/00938

Abstract: According to one or more embodiments, a chemical processing vessel may include side walls, a floor, a catalyst outlet through the floor, and a plate grid distributor for distributing a fluid. The plate may include a plurality of apertures extending through the thickness of the plate and a central opening. The plate may include a catalyst transport passage extending from the central opening to the catalyst outlet. The catalyst transport passage may have a greater cross section area at the central opening of the plate than at the catalyst outlet. According to one or more embodiments, a method of operating a chemical processing vessel passing a fluid into the chemical processing vessel, directing the fluid through a plate grid distributor, and passing catalyst from above the plate, through the catalyst transport passage, and out of the chemical processing vessel through the catalyst outlet.

公开(公告)号：US20230372889A1

公开(公告)日：2023-11-23

申请号：US18247141

申请日：2021-09-28

Applicant: Dow Global Technologies LLC

Inventor： Matthew T. Pretz ,  Donald F. Shaw ,  Richard Walter ,  Albert Meza ,  Fermin Sandoval ,  Quan Yuan ,  Liwei Li ,  Pritish Kamat

IPC: B01J8/18 ,  B01J4/00 ,  F23C10/22

CPC classification number: B01J8/1818 ,  B01J8/1872 ,  B01J4/004 ,  F23C10/22 ,  B01J2208/00938 ,  B01J2208/00911

Abstract: A fluidized bed processing system include a vessel having a vessel wall and a plurality of chemical feed distributors coupled to the vessel wall and extending into an internal volume of the vessel. Each of the chemical feed distributors includes a distributor body forming a chemical feed flow path and a plurality of chemical feed outlets. The fluidized bed processing system further includes at least one intermediate beam having at plurality of slots spaced apart along a beam length. That intermediate beam is coupled to the vessel wall at both ends, each chemical feed distributor passes through one slot of the intermediate beam, and the intermediate beam provides vertical support for each of the plurality of chemical feed distributors. The fluidized bed processing system can include lateral guides. The intermediate beams and lateral guides support the chemical feed distributors vertically and laterally.