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公开(公告)号：US20230416087A1
公开(公告)日：2023-12-28
申请号：US17848340
申请日：2022-06-23
发明人： Thomas K.T. CHOW , Stephen N. FENDERSON , Marcus WEBER , Trang A. NGO , Denny W. LI , Theresa FLOOD
IPC分类号： C01B17/02 , B01J35/04 , B01J21/04 , B01J21/06 , B01J21/12 , B01J21/08 , B01J23/745 , B01J23/04 , B01D19/00
CPC分类号： C01B17/0232 , B01J35/04 , B01J21/04 , B01J21/063 , B01J21/12 , B01J21/08 , B01J23/745 , B01J23/04 , B01D19/0005
摘要： A reactor system can include a reactor, including: a first inlet for a first stream including a liquid sulfur including a dissolved hydrogen sulfide, a polysulfide, or a combination thereof. A second inlet can be for a second stream, wherein the second stream can be an oxygen-containing gas with no more than about 2%, by weight nitrogen. A packing can be in contact with a catalyst.
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公开(公告)号：US20230295755A1
公开(公告)日：2023-09-21
申请号：US17697850
申请日：2022-03-17
CPC分类号： C21B13/04 , C21B13/14 , C21B13/0073 , C21B13/02 , C21B2300/02
摘要： A modular direct reduction system for producing direct reduced iron (DRI) includes a reformer system which receives a flow of feed gas and which discharges a flow of reducing gas, the reformer system including a plurality of separate reformer modules connected together and wherein each reformer module includes a reformer vessel including an internal chamber, a reactor tube extending through the internal chamber of the reformer vessel and containing a catalyst configured to react with the feed gas received by the reactor tube to form the reducing gas, and a burner to burn a fuel gas to heat the reactor tube, and a furnace system connected to the reformer system and including a furnace having a first inlet which receives an iron ore, a second inlet which receives the reducing gas from the reformer system to form the DRI, and an outlet which discharges the DRI.
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公开(公告)号：US11725879B2
公开(公告)日：2023-08-15
申请号：US16325696
申请日：2017-09-08
发明人： John Mak , Sabrina Devone , James Shih , Curt Graham
CPC分类号： F25J3/0238 , C10G5/04 , C10G5/06 , F25J3/0209 , F25J3/0233 , C10G2300/1025 , C10G2300/4056 , F25J2200/02 , F25J2200/30 , F25J2200/76 , F25J2205/04 , F25J2205/60 , F25J2215/62 , F25J2290/80
摘要： A natural gas liquid plant is retrofitted with a bolt-on unit that includes an absorber that is coupled to an existing demethanizer by refrigeration produced at least in part by compression and expansion of the residue gas, wherein ethane recovery can be increased to at least 99% and propane recovery is at least 99%, and where a lower ethane recovery of 96% is required, the bolt-on unit does not require the absorber, which could be optimum solution for revamping an existing facility. Contemplated configurations are especially advantageous to be used as bolt-on upgrades to existing plants.
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公开(公告)号：US20220267147A1
公开(公告)日：2022-08-25
申请号：US17677805
申请日：2022-02-22
发明人： Ravi RAVIKUMAR , Sunil SINGHAL
IPC分类号： C01B3/48 , C01B3/56 , H01M8/0612 , H01M8/04089
摘要： A process for reforming for producing hydrogen and generating electricity, comprises: introducing a feed comprising a hydrocarbon stream to a reformer to produce unshifted synthesis gas (syngas); introducing the unshifted syngas to a water gas shift unit to produce a shifted syngas; removing CO2 from the shifted syngas to produce a CO2 depleted syngas and a CO2 product; introducing the CO2 depleted syngas to a pressure swing adsorption unit to produce a hydrogen product and an off-gas comprising carbon monoxide, carbon dioxide, unreacted methane; splitting a portion of the hydrogen product; and providing the portion of the hydrogen product to an electricity generator for generating electricity for use within the process.
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公开(公告)号：US11420211B2
公开(公告)日：2022-08-23
申请号：US16762882
申请日：2017-12-29
发明人： Mark Sherman
摘要： A method includes separating, in a first stage of separating, crushed ore material by size into a first fines stream and a first coarse stream; grinding the first coarse stream in a second stage of grinding; feeding the product of the second stage of grinding back to the step of separating; feeding the first fines stream from the step of separating to a recovery circuit; producing a rejected stream from the recovery circuit of crushed ore material that does not meet the target mineral size; separating, in a second stage of separating, the rejected stream from the recovery circuit into a second fines stream and a second coarse stream; grinding the second coarse stream in a third stage of grinding; and feeding the product of the third stage of grinding back to the recovery circuit.
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公开(公告)号：US11097952B2
公开(公告)日：2021-08-24
申请号：US16435056
申请日：2019-06-07
发明人： Thomas K. T. Chow , Ryan Y. D. Chow , Ghaith Aljazzar , Denny Li
摘要： Processes and systems for oxygen-enhanced Claus carbon dioxide recovery are disclosed. Oxygen is fed to a sulfur recovery unit instead of air. The tail gas is fed to a tail gas treatment unit which produces a treated tail gas, and the treated tail gas is processed in a carbon dioxide recovery unit to produce a carbon dioxide product. A method for retrofitting an existing sulfur recovery unit and tail gas treatment unit so as to recover the carbon dioxide product is also disclosed.
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公开(公告)号：US20210095921A1
公开(公告)日：2021-04-01
申请号：US17054195
申请日：2018-05-22
发明人： John MAK , James SHIH , Dave SCHULTE
摘要： A natural gas liquids (NGL) plant, the NGL plant comprising an absorber configured to provide an absorber overhead and an absorber bottoms, a stripper configured to produce a stripper overhead and a stripper bottoms, wherein the stripper is positioned downstream from the absorber and fluidly connected therewith such that the absorber bottoms can be introduced into the stripper, and a multi-pass heat exchanger configured to provide at least one reflux stream to the absorber, wherein the absorber and stripper are configured, in an ethane rejection arrangement, to provide the stripper overhead to a top of the absorber, and wherein the absorber and stripper are configured, in an ethane recovery arrangement, to provide the stripper overhead to a bottom of the absorber.
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公开(公告)号：US20200370824A1
公开(公告)日：2020-11-26
申请号：US16421138
申请日：2019-05-23
发明人： John MAK , Jacob THOMAS , Dhirav PATEL , Curt GRAHAM , Irene ZHANG
IPC分类号： F25J3/02
摘要： A method for removing heavy hydrocarbons from a feed gas by: feeding, into an absorber, a top reflux stream and a second reflux stream below the top reflux stream, wherein the absorber produces an absorber bottom product stream and an absorber overhead product stream; depressurizing and feeding the absorber bottom product stream to a stripper to produce a stripper bottom product stream and a stripper overhead product stream; cooling and feeding a portion of the absorber overhead product stream back to the absorber as the top reflux stream; and pressurizing and feeding the stripper overhead product stream back to the absorber as the second reflux stream. Systems for carrying out the method are also provided.
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公开(公告)号：US20200261920A1
公开(公告)日：2020-08-20
申请号：US16762882
申请日：2017-12-29
发明人： Mark SHERMAN
摘要： Embodiments include systems and methods for multiple-stage grinding of crushed ore material. A method may comprise separating, in a first stage of separating, crushed ore material by size into a first fines stream and a first coarse stream; grinding the first coarse stream in a second stage of grinding; feeding the product of the second stage of grinding back to the step of separating; feeding the first fines stream from the step of separating to a recovery circuit; producing a rejected stream from the recovery circuit of crushed ore material that does not meet the target mineral size; separating, in a second stage of separating, the rejected stream from the recovery circuit into a second fines stream and a second coarse stream; grinding the second coarse stream in a third stage of grinding; and feeding the product of the third stage of grinding back to the recovery circuit.
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10.发明授权公开(公告)号：US10569215B2
公开(公告)日：2020-02-25
申请号：US15068148
申请日：2016-03-11
发明人： Satish Reddy , Joe Yonkoski
摘要： Systems and methods for reducing the energy requirements for carbon dioxide capture are described. Heat from system processes, such as steam condensation and hot flue gas, is utilized to heat reflux liquid utilized in release of carbon dioxide from absorbent solvent.
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