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公开(公告)号：US11999692B2
公开(公告)日：2024-06-04
申请号：US18363360
申请日：2023-08-01
Inventor： Bhupender S. Minhas , Jeevan S. Abichandani , Marcus L. H. Van Nuland , Wai Kit Cheng , Chong-Jhoo Wang , Robert G. Tinger
CPC classification number: C07C7/144 , B01D61/007 , C07C7/005 , B01D2317/025
Abstract: Selective removal of non-aromatic hydrocarbons from a xylene isomerization process for para-xylene production is accomplished using a membrane unit positioned within a xylene recovery loop. The membrane unit may include a one-stage or multi-stage (e.g., two-stage) membrane system and may be configured to separate a membrane unit product stream from a non-aromatics rich stream, which can be removed from the xylene recovery loop. The membrane unit may have a xylene permeance of about 60 gm/m2/hr/psi and a xylene to non-aromatic permeance ratio of about 15.
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公开(公告)号：US20240166960A1
公开(公告)日：2024-05-23
申请号：US18264740
申请日：2021-02-09
Inventor： Samuel J. CADY , Xiaochun XU , Shifang LUO , Michael H. RING , Joseph E. GATT
IPC: C10G65/02
CPC classification number: C10G65/02 , C10G2300/1011 , C10G2300/304 , C10G2300/307 , C10G2400/04
Abstract: A method for producing renewable arctic diesel is provided herein. The method includes contacting a bio-derived feedstock with a hydrotreatment catalyst under effective hydrotreatment conditions to produce a hydrotreated feedstock and separating the hydrotreated feedstock into gas phase products and liquid phase products. The liquid phase products include an oxygen content of less than 0.4 wt % but greater than 10 ppm. The method also includes contacting the liquid phase products with a ZSM-48-based isomerization/dewaxing catalyst under effective isomerization/dewaxing conditions to produce an isomerized product stream including a change in cloud point (ΔCP) of 50 degrees ° C. or more. The method further includes separating the isomerized product stream into gas phase products and liquid phase products, as well as fractionating the liquid phase products to produce renewable naphtha and renewable arctic diesel with a cloud point of −20° C. or less and a yield of 80 wt % or more.
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543.发明授权公开(公告)号：US11988789B2
公开(公告)日：2024-05-21
申请号：US17247503
申请日：2020-12-14
Inventor： Junzhe Sun , Valeriy V. Brytik , Lingxiao Zhang , Erik R. Neumann
Abstract: A method for approximating an inverse Hessian is provided. One methodology to generate the inverse Hessian is to precondition the gradient, such as by using point-spread function deconvolution, T-power, or source-illumination compensation, prior to using non-stationary matching filters (NMF) to generate the inverse Hessian. Various types of NMF are contemplated, including using filters for different windows in the subsurface or using filters assigned to specific locations in the subsurface. Further, the number of filters for NMF may vary from iteration to iteration. For example, the filters assigned to the specific locations in the subsurface may be generated in a multi-scale manner, in which an initial iteration uses longer scale/longer wavelength features for inversion and subsequent iterations use finer scale/smaller wavelength features for inversion.
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公开(公告)号：US11986807B2
公开(公告)日：2024-05-21
申请号：US18299212
申请日：2023-04-12
Inventor： Matthew S. Ide , Doron Levin , Wenyih F. Lai , Ivy D. Johnson , Scott J. Weigel , Brett T. Loveless
IPC: B01J29/18 , B01J29/70 , B01J29/80 , B01J35/61 , B01J35/64 , B01J37/00 , C07C2/66 , C07C6/12 , C07C7/13 , B01J29/06
CPC classification number: B01J29/80 , B01J29/18 , B01J29/70 , B01J29/7007 , B01J35/61 , B01J35/647 , B01J37/0009 , C07C2/66 , C07C6/126 , C07C7/13 , B01J2029/062 , C07C2529/18 , C07C2529/70 , C07C2529/80
Abstract: Catalyst composition which comprises a first zeolite having a BEA* framework type and a second zeolite having a MOR framework type and a mesopore surface area of greater than 30 m2/g is disclosed. These catalyst compositions are used to remove catalyst poisons from untreated feed streams having one or more impurities which cause deactivation of the downstream catalysts employed in hydrocarbon conversion processes, such as those that produce mono-alkylated aromatic compounds.
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公开(公告)号：US20240140792A1
公开(公告)日：2024-05-02
申请号：US18499472
申请日：2023-11-01
Inventor： Everett J. O'NEAL , David C. Dankworth , Lu Han , Sarah E. Feicht , Anastasios I. Skoulidas
CPC classification number: C01B3/26 , B01J19/0066 , B01J19/2485 , C01B2203/0238 , C01B2203/06 , C01B2203/1235
Abstract: Systems and methods are provided for performing both reforming and partial oxidation as part of the reaction step of a reaction cycle in a cyclic reaction environment such as a reverse flow reaction environment, where heat is provided by direct heating during a regeneration step. In some aspects, performing a combination of reforming and partial oxidation can allow for higher conversion of hydrocarbons than reforming alone while reducing or minimizing the peak temperatures within the cyclic reaction environment. In some aspects, performing both reforming and partial oxidation can also allow for an improved molar ratio of H2 to CO in the resulting effluent from the conversion reaction (relative to partial oxidation) while still maintaining high total conversion.
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Patent Agency Ranking
公开(公告)号：US20240139702A1
公开(公告)日：2024-05-02
申请号：US18499500
申请日：2023-11-01
Inventor： Anastasios I. SKOULIDAS , Anjaneya S. Kovvali , Brian M. Moreno , Ashish B. Mhadeshwar , Everett J. O'Neal
CPC classification number: B01J19/2485 , B01J19/0013 , B01J19/0066 , C01B3/26 , C01B2203/0227 , C01B2203/1235
Abstract: Systems and methods are provided for improving control of the temperature profile in a cyclic flow reactor, such as a reverse flow reactor, during operation. The improved temperature control is achieved in part based on inclusion of regions having reduced or minimized catalyst density with increased volumetric heat capacity within the reaction zone of the reactor. This improved control over the temperature profile is achieved while reducing or minimizing any loss of reaction capacity due to lowering the amount of catalyst in the reaction zone.
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公开(公告)号：US20240123395A1
公开(公告)日：2024-04-18
申请号：US18523318
申请日：2023-11-29
Inventor： Ananda Krishna NAGAVARAPU , Stephen WRIGHT , Bennett D. MARSHALL , Brett L. RYBERG
IPC: B01D53/047 , B01D53/02 , B01D53/04 , C10L3/10
CPC classification number: B01D53/0473 , B01D53/02 , B01D53/0438 , B01D53/0446 , B01D53/0462 , C10L3/104 , B01D2253/108 , B01D2253/204 , B01D2256/24 , B01D2256/245 , B01D2257/304 , B01D2257/504 , B01D2257/80 , B01D2259/40079 , B01D2259/40081 , B01D2259/4062 , C10L2200/0286 , C10L2290/542
Abstract: Provided are apparatus and systems for performing a swing adsorption process. This swing adsorption process may involve performing dampening for fluctuations in the streams conducted away from the adsorbent bed unit. The process may be utilized for swing adsorption processes, such as rapid cycle TSA and/or rapid cycle PSA, which are utilized to remove one or more contaminants from a gaseous feed stream.
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公开(公告)号：US20240116020A1
公开(公告)日：2024-04-11
申请号：US18481411
申请日：2023-10-05
Inventor： Zhiyan WANG , William R. GUNTHER , Changmin CHUN
IPC: B01J19/24 , B01F23/10 , B01F25/421 , B01F25/422 , B01J19/00 , C01B3/38
CPC classification number: B01J19/2485 , B01F23/10 , B01F25/422 , B01F25/4233 , B01J19/0053 , C01B3/38 , B01F2101/501
Abstract: Systems and methods are provided for improving the flow distribution in the high temperature zone of a cyclic flow reactor, such as a reverse flow reactor. The systems can include a plurality of mixing plates that can facilitate mixing of flows that have been maintained separately until a mixing location. Based in part on the use of a plurality of mixing plates, methods are provided for operating a reverse flow reactor with a temperature profile that has improved uniformity across the cross-section of the reactor. In some aspects, a flame diffuser can be included downstream from the plurality of mixing plates to further improve the uniformity of the temperature distribution.
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公开(公告)号：US20240109775A1
公开(公告)日：2024-04-04
申请号：US18477591
申请日：2023-09-29
Inventor： Everett J. O'Neal , David C. Dankworth , Keith R. Hajkowski
CPC classification number: C01B3/386 , B01J19/0013 , B01J19/2485 , C01B3/384 , B01J2219/2413 , C01B2203/0233 , C01B2203/0811 , C01B2203/1241
Abstract: Systems and methods are provided for performing reforming in a manner where the flows for providing heat for the endothermic reforming reaction are counter-current to the flows for the reforming reaction. Although the flows are counter-current, the systems and methods also allow the heating profile of the reactor to have a temperature peak toward the middle of the reactor, as opposed to at the end of the reactor. This shift of the temperature peak toward the middle allows for improved heat utilization and recovery during operation of the reactor.
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550.发明授权公开(公告)号：US11914101B2
公开(公告)日：2024-02-27
申请号：US17247528
申请日：2020-12-15
Inventor： Valeriy V. Brytik , Junzhe Sun , Carey M. Marcinkovich , Hong Zhao , Erik R. Neumann
IPC: G06F17/18 , G06F30/20 , G06F30/27 , G06F111/10 , G01V99/00
CPC classification number: G01V99/005 , G06F17/18 , G06F30/20 , G06F30/27 , G06F2111/10
Abstract: A method for partitioning a search direction when using least squares reverse time migration (LSRTM) is provided. LSRTM may be used iteratively in order to improve imaging accuracy. As part of LSRTM, multiple local line searches may be performed. In particular, image space may be partitioned, such as by using a set of masks. The search direction, such as the gradient, may be partitioned using the set of masks. Local line searches may be performed for each partition of the search direction, resulting in finding respective line search constants. The respective line search constants may then be used for iterating the model in order to improve imaging accuracy.
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