Abstract: Combined hydroprocessing and solvent deasphalting with sequential addition of a dispersed catalyst to process heavy oil without increasing equipment fouling. An example method includes: hydroprocessing heavy oil containing dispersed catalyst particles to yield upgraded heavy oil; subjecting a resid portion of the upgraded heavy oil to solvent deasphalting to produce DAO and pitch; and hydroprocessing the deasphalted oil containing dispersed catalyst particles to yield upgraded deasphalted oil.
Abstract: An ebullated bed hydroprocessing system is upgraded and operated at modified conditions using a dual catalyst system to produce less fouling sediment. The less fouling sediment produced by the upgraded ebullated bed reactor reduces the rate of equipment fouling at any given sediment production rate and/or concentration compared to the sediment produced by the ebullated bed reactor prior to upgrading. In some cases, sediment production rate and/or concentration are maintained or increased, after upgrading the ebullated bed reactor, while equipment fouling is reduced. In other cases, sediment production rate and/or concentration are increased, after upgrading the ebullated bed reactor, without increasing equipment fouling. In some cases, sediment production rate and/or concentration are decreased by a given percentage, after upgrading the ebullated bed reactor, and the rate of equipment fouling is decreased by a substantially greater percentage.
Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to improve the quality of vacuum residue. The improved quality of vacuum residue can be provided by one or more of reduced viscosity, reduced density (increased API gravity), reduced asphaltene content, reduced carbon residue content, reduced sulfur content, and reduced sediment. Vacuum residue of improved quality can be produced while operating the upgraded ebullated bed reactor at the same or higher severity, temperature, throughput and/or conversion. Similarly, vacuum residue of same or higher quality can be produced while operating the upgraded ebullated bed reactor at higher severity, temperature, throughput and/or conversion.
Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to hydroprocess opportunity feedstocks (i.e., lower quality heavy oils or lower quality feedstock blends) while maintaining or increasing the rate of production of converted products. The dual catalyst system improves the ability of the upgraded ebullated bed hydroprocessing system to accommodate and withstand negative effects of periodic use of opportunity feedstocks (e.g., without significantly increasing equipment fouling and/or sediment production). In some cases, an upgraded ebullated bed reactor using the dual catalyst system can hydroprocess opportunity feedstocks while decreasing equipment fouling and/or sediment production.
Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to increase rate of production of converted products. The rate of production is achieved by increasing reactor severity, including increasing the operating temperature and at least one of throughput or conversion. The dual catalyst system permits increased reactor severity and provides increased production of converted products without a significant increase in equipment fouling and/or sediment production. In some cases, the rate of production of conversion products can be achieved while decreasing equipment fouling and/or sediment production.
Abstract: A system to treat and desalinate wastewater using a low energy ejector desalination system (LEEDS), which employs a static liquid-gas ejector and maximum heat integration in the water treatment system.
Type:
Application
Filed:
August 18, 2021
Publication date:
December 2, 2021
Applicant:
Bechtel Hydrocarbon Technology Solutions, Inc.
Inventors:
Jorge T. Aguinaldo, Joseph P. Kanzleiter, Saurabh Tonapi, Mukesh K. Shah
Abstract: A system to treat and desalinate wastewater using a low energy ejector desalination system (LEEDS), which employs a static liquid-gas ejector and maximum heat integration in the water treatment system.
Type:
Application
Filed:
March 10, 2020
Publication date:
September 16, 2021
Applicant:
Bechtel Hydrocarbon Technology Solutions, Inc.
Inventors:
Jorge T. Aguinaldo, Joseph P. Kanzleiter, Saurabh Tonapi, Mukesh K. Shah
Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to produce less fouling sediment. The dual catalyst system more effectively converts sediment-forming precursors to produce sediment that is less fouling than sediment produced using only the heterogeneous catalyst and not the dispersed metal sulfide particles. The dual catalyst system provides for a lower rate of equipment fouling for a given sediment production rate and/or concentration. In some cases, sediment production rate and/or concentration can be maintained or increased while equipment fouling is reduced. In some cases, sediment production rate and/or concentration can be increased without increasing equipment fouling.
Abstract: A system to treat and desalinate wastewater using a low energy ejector desalination system (LEEDS), which employs a static liquid-gas ejector and maximum heat integration in the water treatment system.
Type:
Grant
Filed:
March 10, 2020
Date of Patent:
August 24, 2021
Assignee:
BECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS, INC.
Inventors:
Jorge T. Aguinaldo, Joseph P. Kanzleiter, Saurabh Tonapi, Mukesh K. Shah
Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles, which permits recycling of vacuum bottoms without recycle buildup of asphaltenes. The dual catalyst system more effectively converts asphaltenes in the ebullated bed reactor and increases asphaltene conversion by an amount that at least offsets higher asphaltene concentration resulting from recycling of vacuum bottoms. In this way, there is no recycle buildup of asphaltenes in upgraded ebullated bed reactor notwithstanding recycling of vacuum bottoms. In addition, residual dispersed metal sulfide catalyst particles in the vacuum bottoms can maintain or increase the concentration of the dispersed metal sulfide catalyst in the ebullated bed reactor.
Abstract: Methods and systems for mixing a catalyst precursor with a heavy oil feedstock preparatory to hydroprocessing the heavy oil feedstock in a reactor to form an upgraded feedstock. Achieving very good dispersion of the catalyst precursor facilitates and maximizes the advantages of the colloidal or molecular hydroprocessing catalyst. A catalyst precursor and a heavy oil feedstock having a viscosity greater than the viscosity of the catalyst precursor are provided. The catalyst precursor is pre-mixed with a hydrocarbon oil diluent, forming a diluted catalyst precursor. The diluted precursor is then mixed with at least a portion of the heavy oil feedstock so as to form a catalyst precursor-heavy oil feedstock mixture. Finally, the catalyst precursor-heavy oil feedstock mixture is mixed with any remainder of the heavy oil feedstock, resulting in the catalyst precursor being homogeneously dispersed on a colloidal and/or molecular level within the heavy oil feedstock.
Abstract: Systems and methods for removing hydrogen sulfide from an ammonia stream in the NH3 purification and liquefaction stage of a conventional two-column sour water stripping system using an adsorbent bed.
Type:
Grant
Filed:
September 27, 2019
Date of Patent:
November 24, 2020
Assignee:
BECHTEL HYDROCARBON TECHNOLOGY SOLUTIONS, INC.
Abstract: Systems for mixing a catalyst precursor with a heavy oil feedstock preparatory to hydroprocessing the heavy oil feedstock in a reactor to form an upgraded feedstock. Achieving very good dispersion of the catalyst precursor facilitates and maximizes the advantages of the colloidal or molecular hydroprocessing catalyst. A catalyst precursor and a heavy oil feedstock having a viscosity greater than the viscosity of the catalyst precursor are provided. The catalyst precursor is pre-mixed with a hydrocarbon oil diluent, forming a diluted catalyst precursor. The diluted precursor is then mixed with at least a portion of the heavy oil feedstock so as to form a catalyst precursor-heavy oil feedstock mixture. Finally, the catalyst precursor-heavy oil feedstock mixture is mixed with any remainder of the heavy oil feedstock, resulting in the catalyst precursor being homogeneously dispersed on a colloidal and/or molecular level within the heavy oil feedstock.
Abstract: Systems and methods for removing hydrogen sulfide from an ammonia stream in the NH3 purification and liquefaction stage of a conventional two-column sour water stripping system using an adsorbent bed.
Type:
Application
Filed:
September 27, 2019
Publication date:
January 23, 2020
Applicant:
Bechtel Hydrocarbon Technology Solutions, Inc.
Abstract: Systems and methods for multi-stage refrigeration in mixed refrigerant and cascade refrigeration cycles using one or more liquid motive eductors.
Type:
Grant
Filed:
November 9, 2016
Date of Patent:
January 14, 2020
Assignee:
Bechtel Hydrocarbon Technology Solutions, Inc.
Abstract: Systems and methods for multi-stage refrigeration in mixed refrigerant and cascade refrigeration cycles using one or more liquid motive eductors.
Type:
Grant
Filed:
February 17, 2017
Date of Patent:
December 24, 2019
Assignee:
Bechtel Hydrocarbon Technology Solutions, Inc.