公开(公告)号：US12122738B2

公开(公告)日：2024-10-22

申请号：US18219470

申请日：2023-07-07

Applicant: Whitefox Technologies Limited

Inventor： Virginia Andrade ,  Stephan Blum ,  Thiago Righi ,  Jin Ming Zhou

IPC: C12H6/02 ,  B01D3/00 ,  B01D3/14 ,  C07C29/76 ,  C07C29/80 ,  C07C29/84

CPC classification number: C07C29/84 ,  B01D3/002 ,  B01D3/145 ,  B01D3/148 ,  C07C29/76 ,  C07C29/80 ,  C12H6/02

Abstract: The present disclosure provides high-grade ethanol production systems and methods that increase energy efficiency as compared to typical systems and methods by minimizing undesired acetal formation. The provided ethanol production method may include a low boilers removal distillation column and/or a stripper column constructed to simultaneously remove at least a portion of the acetaldehyde and at least a portion of the acetal from a feed stream in the presence of water. In some aspects, a low boilers removal process may be followed by a water removal process, which may be followed by a high boilers removal process. Acidity (e.g., carbon dioxide) may also be removed from a feed stream prior to or during the low boilers removal process. By minimizing acetal production, the provided method minimizes the amount of energy that is required to remove acetal when producing high-grade ethanol.

公开(公告)号：US12005381B2

公开(公告)日：2024-06-11

申请号：US17967144

申请日：2022-10-17

Applicant: WHITEFOX TECHNOLOGIES LIMITED

Inventor： Jin Ming Zhou ,  Thiago Righi ,  Chenxu Shi ,  Stephan Blum ,  Virginia Andrade

IPC: B01D3/00 ,  B01D3/14 ,  C12H6/02

CPC classification number: B01D3/148 ,  B01D3/001 ,  B01D3/007 ,  B01D3/146 ,  C12H6/02 ,  B01D2257/80

Abstract: A distillation and dehydration system is provided that produces an anhydrous organic solvent. The provided system includes vapor recompression (e.g., a mechanical or thermal vapor recompression unit) to recover heat from a rectification-distillation section (e.g., a rectifier/stripper column). The addition of vapor recompression enables further heat recovery within a stream by increasing the condensation temperature and pressure of that stream and later using its latent heat by condensing it.

公开(公告)号：US20240140928A1

公开(公告)日：2024-05-02

申请号：US18547433

申请日：2021-02-22

Applicant: POLYWIN PTE. LTD.

Inventor： Jianjun SUI

IPC: C07D319/12 ,  B01D3/00 ,  B01D3/14 ,  B01D5/00

CPC classification number: C07D319/12 ,  B01D3/009 ,  B01D3/148 ,  B01D5/006

Abstract: This invention relates to a method for the continuous production of optically pure lactide comprising a first reactive distillation system, a second reactive distillation system, a main distillation system and the side-draw refluxer. For each of the four systems a novel horizontally top-mounted condenser is used in order to decrease its total pressure drop and thus reduce side-reactions associated with high bottom temperature. In addition, a wiped film evaporator, a short path evaporator or a combination thereof is utilized for the concentration of the purge stream from the second reactive distillation, in a purpose of removing the metal contaminants contained in the purge stream and depolymerizing the contained unconverted lactic acid oligomers to crude lactide, all of which give additional advantages for the lactide production.

公开(公告)号：US20240009590A1

公开(公告)日：2024-01-11

申请号：US18014381

申请日：2021-08-05

Applicant: Borealis AG

Inventor： Henry Sleijster ,  Mohammad Al-Haj Ali ,  Mubashar Sattar ,  Noureddine Ajellal ,  Charlotta Weber

IPC: B01D3/14 ,  B01D3/06 ,  B01D53/14 ,  B01D53/18 ,  C08F6/12 ,  C08F6/00

CPC classification number: B01D3/148 ,  B01D3/06 ,  B01D53/1418 ,  B01D53/18 ,  C08F6/12 ,  C08F6/001 ,  B01D2256/24 ,  B01D2252/205

Abstract: The present invention is concerned with a screening assembly comprising a separating device connected to a conduit for an effluent stream comprising a polymer and a mixture of hydrocarbons, wherein the separating device is configured to separate the effluent stream into a polymer-rich stream and a polymer-lean vapor stream, wherein the first separation device comprises an inlet, a first outlet for withdrawing a polymer-rich stream, and a second outlet for withdrawing a polymer-lean vapor stream, a screening device connected to the separating device via a conduit for the polymer-lean vapor stream, wherein the screening device comprises a first inlet connected to the conduit for the polymer-lean vapor stream, a first outlet for withdrawing a cleaned vapor stream, a second outlet for withdrawing a polymer-comprising condensed vapor stream, and at least one second inlet for introducing a condensed vapor stream.

公开(公告)号：US11866658B2

公开(公告)日：2024-01-09

申请号：US18084099

申请日：2022-12-19

Applicant: Indian Oil Corporation Limited

Inventor： Vasamsetty Naga Veera Hima Bindu ,  Mainak Sarkar ,  Ganesh Vitthalrao Butley ,  Ramesh Karumanchi ,  Sarvesh Kumar ,  Madhusudan Sau ,  Sankara Sri Venkata Ramakumar

IPC: C10G67/14 ,  B01D3/14

CPC classification number: C10G67/14 ,  B01D3/148 ,  C10G2300/1048 ,  C10G2300/1096 ,  C10G2300/202 ,  C10G2300/301 ,  C10G2300/308 ,  C10G2300/4006 ,  C10G2300/4012 ,  C10G2300/4018

Abstract: A process for the production of ultralow aromatic specialty distillate from different refinery streams particularly high sulfur streams. The process produces de-aromatized distillates with benzene content below 1 ppmw. Hydrocarbon feedstock having boiling temperature in the range of 90 and 350° C., preferably 140 and 320° C. The hydrocarbon feedstocks are obtained from any petroleum-refinery or bio-refinery or any other source producing hydrocarbon streams.

公开(公告)号：US20230332059A1

公开(公告)日：2023-10-19

申请号：US18337280

申请日：2023-06-19

Applicant: Bell Engineering, Inc.

Inventor： Robert Richardson ,  Tyler Briggs ,  Brint Bridegam

IPC: C10G53/02 ,  C10G33/00 ,  B01D3/14 ,  B01D3/00 ,  B01D17/04

CPC classification number: C10G53/02 ,  C10G33/00 ,  B01D3/148 ,  B01D3/007 ,  B01D17/045 ,  C10G2300/1033

Abstract: A method and apparatus for separating production fluids using a system designed to minimize the heating requirements through thermodynamic efficiency and reduce equipment costs.

公开(公告)号：US11643378B2

公开(公告)日：2023-05-09

申请号：US17670243

申请日：2022-02-11

Applicant: UOP LLC

Inventor： Xin X Zhu ,  Stephen T. King ,  Glen John Pomorski ,  Joseph Edward Zimmerman

IPC: C07C7/09 ,  C07C7/04 ,  B01D3/14 ,  B01D1/28 ,  B01D3/32 ,  C07C7/00

CPC classification number: C07C7/09 ,  B01D1/28 ,  B01D3/148 ,  B01D3/322 ,  C07C7/005 ,  C07C7/04

Abstract: A process and apparatus reboil a propylene splitter bottoms by heat exchange and/or a deethanizer bottoms stream with a compressed propylene splitter overhead stream. Use of single splitter compressor and operation of the propane-propylene splitter column at lower pressure are enabled, whereas conventionally two splitter compressors and higher splitter pressure were necessary to provide a propylene product stream and a propane recycle stream of equivalent quality.

公开(公告)号：US20180363979A1

公开(公告)日：2018-12-20

申请号：US16060674

申请日：2016-12-08

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： Ashfaq Shahanawaz SHAIKH ,  Anthony PONDER ,  Ginette TOLLESON

IPC: F25J3/02 ,  B01D53/00 ,  B01D53/24 ,  B01D5/00 ,  B01D3/14

CPC classification number: F25J3/0242 ,  B01D3/06 ,  B01D3/148 ,  B01D5/00 ,  B01D5/006 ,  B01D53/002 ,  B01D53/229 ,  B01D53/24 ,  B01D2256/16 ,  B01D2256/24 ,  B01D2257/7022 ,  B01D2257/7025 ,  C10G5/06 ,  C10G31/06 ,  C10G70/00 ,  C10G2300/1081 ,  C10G2300/1088 ,  C10G2300/1092 ,  C10G2400/20 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2200/02 ,  F25J2240/40 ,  Y02C20/20 ,  Y02P70/34

Abstract: Selective recovery of C2 to C4 hydrocarbons is achieved through the use of a converging-diverging nozzle, or de Laval nozzle. The vapor stream comprising C2 to C4 hydrocarbons is fed into an inlet of a de Laval nozzle having a throat. The vapor stream may have an initial temperature of between 0° C. and 100° C., and an initial pressure of between 200 psig and 500 psig. In the de Laval nozzle, the vapor stream expands after passing through the throat of the de Laval nozzle, producing a vapor stream having reduced temperature and pressure. Then, C2 to C4 hydrocarbons condense from the reduced-temperature vapor stream as liquid droplets, which may be recovered. Fractionation of C2 to C4 hydrocarbons by means of a de Laval nozzle is possible; the technique allows selective recovery of a stream enriched in propene from a mixture of propane and propene.

公开(公告)号：US20180140965A1

公开(公告)日：2018-05-24

申请号：US15359509

申请日：2016-11-22

Applicant: Shale Flora ,  Dan Shelton

Inventor： Shale Flora ,  Dan Shelton

IPC: B01D3/14 ,  B01D1/06 ,  B01D3/30 ,  B01D5/00 ,  B01D3/10 ,  C11B3/12

CPC classification number: B01D3/148 ,  B01D1/06 ,  B01D3/106 ,  B01D3/30 ,  B01D3/40 ,  B01D5/0063 ,  B01D11/00 ,  C11B1/10 ,  C11B3/12

Abstract: Methods and systems are provided for processing cannabinoids and related compounds using a production system comprising an evaporator connected to a distillation unit and condenser column. The product may be collected from the condenser column by a collection system comprising one or more collection tanks. Subsequently, the product may be manually or automatically conveyed from the collection system to storage vessels operating under atmospheric conditions.

公开(公告)号：US09943775B2

公开(公告)日：2018-04-17

申请号：US14547233

申请日：2014-11-19

Applicant: PROSERNAT

Inventor： Jeremie Esquier ,  Bernard Chambon ,  Christian Streicher

IPC: B01D3/06 ,  B01D3/10 ,  B01D3/34 ,  C07C29/80 ,  B01D53/14 ,  B01D3/14

CPC classification number: B01D3/06 ,  B01D3/10 ,  B01D3/148 ,  B01D3/34 ,  B01D53/1425 ,  B01D2252/2023 ,  C07C29/80 ,  C07C31/202

Abstract: The invention concerns a flexible process for purifying a solvent which inhibits the formation of hydrates during gas processing, in particular monoethylene glycol (MEG), said solvent having a boiling point which is higher than that of water and, at least at one point in time, being mixed with water and salts, the process operating in a different manner with the same facility as a function of the quantity of salts in the MEG to be treated.The process operates in accordance with a phase known as reclaiming (separation of salts under vacuum followed by vacuum distillation) when the salts content exceeds the precipitation threshold and if not, the process operates in a regeneration phase (absence of separation of salts and no operation under vacuum).Advantageously, the change is made under the control of means for testing the salts.