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公开(公告)号：US20180087832A1
公开(公告)日：2018-03-29
申请号：US15277539
申请日：2016-09-27
CPC分类号： F25J1/0214 , F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0262 , F25J1/0265 , F25J1/0292 , F25J2205/02 , F25J2205/90 , F25J2210/60 , F25J2230/60 , F25J2240/40 , F25J2245/02 , F25J2270/66
摘要： The present invention relates to methods of increasing the operability, capacity, and efficiency of natural gas liquefaction processes, with a focus on mixed refrigerant cycles. The present invention also relates to natural gas liquefaction systems in which the above-mentioned methods can be carried out. More specifically, a refrigerant used in a pre-cooling heat exchanger of a natural gas liquefaction plant is withdrawn from the pre-cooling heat exchanger, separated into liquid and vapor streams in a liquid-vapor separator after being cooled and compressed. The vapor portion is further compressed, cooled, and fully condensed, then returned to the liquid-vapor separator. Optionally, the fully condensed stream may be circulated through a heat exchanger before being returned to the liquid-vapor separator for the purpose of cooling other streams, including the liquid stream from the liquid-vapor separator.
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公开(公告)号：US09925514B2
公开(公告)日：2018-03-27
申请号：US15049610
申请日：2016-02-22
发明人： Charles Gardner Coe , Christopher Robert Bongo , Geoffrey John Ochs , Marissa Ann Bonanno , Garret Chi-Ho Lau , William Jack Casteel, Jr. , Qiao Zhao , Roger Dean Whitley , Erin Marie Sorensen
CPC分类号： B01J20/18 , B01D53/02 , B01D53/04 , B01D2253/1085 , B01D2256/10 , B01D2256/18 , B01D2257/104 , B01J20/186 , C01B39/46
摘要： An adsorbent having a composition comprising at least 90% chabazite where the chabazite is a single phase chabazite having an Si/Al ratio of 1.2 to 1.8, the chabazite includes a mixture of at least two types of cations, and each of the at least two types of cations are in a molar ratio relative to Al of at least 0.05.
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公开(公告)号：US09915399B1
公开(公告)日：2018-03-13
申请号：US15490344
申请日：2017-04-18
CPC分类号： F17D3/01 , F17D1/04 , F17D5/005 , G05D7/0629
摘要： Controlling flow of gas in a gas pipeline network, wherein flow of gas within each pipeline segment is associated with a direction (positive or negative). Minimum and maximum delivery rates to each gas receipt facility are determined. Lower and upper flow bounds of gas delivery rate are created by bounding minimum and maximum signed flow rates using minimum and maximum delivery rates, respectively, for each pipe segment. A pressure drop relationship for each pipeline segment within the lower and upper flow bounds is linearized to create a linear pressure drop model for each pipeline segment. A network flow solution is calculated, which includes flow rates for each pipeline segment and pressures for each network nodes to satisfy the lower and upper flow bounds on the gas delivery rate. The network flow solution is associated with control element setpoints used by a controller to control one or more control elements.
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公开(公告)号：US20180023889A1
公开(公告)日：2018-01-25
申请号：US15216318
申请日：2016-07-21
CPC分类号： F25J3/0238 , F25J1/0022 , F25J1/0045 , F25J1/0052 , F25J1/0055 , F25J1/0087 , F25J1/0212 , F25J1/0216 , F25J1/0238 , F25J1/0241 , F25J1/0262 , F25J3/0209 , F25J2200/72 , F25J2205/02 , F25J2210/06 , F25J2210/60 , F25J2215/60 , F25J2220/64 , F25J2230/60 , F25J2235/02 , F25J2240/40 , F25J2245/02 , F25J2270/02
摘要： A system and method for integrated heavy hydrocarbon removal in a liquefaction system having a lean natural gas source. An economizer located between a main cryogenic heat exchanger and a reflux drum is provided to cool an overhead vapor stream against a partially condensed stream. In addition, pressure of the natural gas feed stream is maintained into a scrub column. A pressure drop is provided by a valve located between the economizer and the reflux drum on a partially condensed stream withdrawn from the cold end of the warm section of the main cryogenic heat exchanger.
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公开(公告)号：US09873926B2
公开(公告)日：2018-01-23
申请号：US15317684
申请日：2015-10-09
发明人： Shailesh Pradeep Gangoli , Reed Jacob Hendershot , Anup Vasant Sane , Michael J. Gallagher , Aleksandar Georgi Slavejkov
CPC分类号： C22B15/0095 , C22B7/003 , C22B9/16 , C22B15/00 , C22B15/0026 , C22B15/006 , F27D21/0014 , Y02P10/212
摘要： A method and system of controlling a melting process of copper in a copper melting furnace including measuring at least one furnace parameter, wherein the at least one furnace parameter includes one or both of a furnace temperature and a furnace exhaust oxygen concentration, calculating a first rate of change of the furnace parameter over a first time period, calculating a second rate of change of the furnace parameter over a second time period at least a portion of which occurs after the first time period, comparing the first rate of change with the second rate of change, and indicating substantial completion of a process phase in the furnace when the second rate of change deviates by a predetermined threshold percentage from the first rate of change.
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公开(公告)号：US09863583B2
公开(公告)日：2018-01-09
申请号：US14952131
申请日：2015-11-25
CPC分类号： F17C13/04 , F17C5/007 , F17C5/06 , F17C13/025 , F17C2205/0326 , F17C2205/0332 , F17C2205/0388 , F17C2221/012 , F17C2223/0123 , F17C2223/036 , F17C2225/0123 , F17C2225/035 , F17C2225/036 , F17C2227/0337 , F17C2227/0355 , F17C2227/042 , F17C2250/032 , F17C2250/043 , F17C2250/0626 , F17C2250/072 , F17C2260/021 , F17C2265/065 , F17C2270/0139 , F17C2270/0168 , F17C2270/0171 , F17C2270/0173 , F17C2270/0176 , F17C2270/0178 , F17C2270/0189 , Y02E60/321
摘要： Method of operating a hydrogen dispensing where pressure relief is provided through block and bleed valves. After dispensing hydrogen from a dispensing station where the hydrogen is cooled during dispensing, trapped hydrogen remains in the transfer lines. During the idle time between refueling vehicles, the temperature of the trapped hydrogen increases resulting in an increase in the pressure of the trapped hydrogen. Block and bleed valves operate to relieve the pressure in the transfer lines.
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公开(公告)号：US20170336136A1
公开(公告)日：2017-11-23
申请号：US15160209
申请日：2016-05-20
IPC分类号： F25J1/00
CPC分类号： F25J1/0022 , F25J1/0052 , F25J1/0055 , F25J1/0214 , F25J1/0216 , F25J1/0227 , F25J1/0238 , F25J1/0264 , F25J1/0265 , F25J1/0268 , F25J1/0274 , F25J1/0292 , F25J2210/06 , F25J2220/64 , F25J2270/12 , F25J2270/66 , F25J2270/906
摘要： A system and method for liquefaction of a natural gas stream utilizing a plurality of asymmetric parallel pre-cooling circuits. The use of asymmetric parallel cooling circuits allows for greater control over each refrigerant stream during the cooling process and simplifies process control by dedicating heat exchangers to performing similar duties.
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公开(公告)号：US20170320729A1
公开(公告)日：2017-11-09
申请号：US15148207
申请日：2016-05-06
发明人： Simon Craig Saloway
CPC分类号： C01B3/38 , B01J7/00 , B01J8/025 , B01J8/062 , B01J2208/00176 , B01J2208/00274 , B01J2208/00504 , B01J2208/0053 , B01J2219/0004 , C01B2203/0233 , C01B2203/0811 , C01B2203/0883 , C01B2203/1241
摘要： Process and apparatus for producing a hydrogen-containing product by steam-hydrocarbon reforming of multiple hydrocarbon feedstocks in a production facility utilizing a prereformer in addition to the primary reformer. The temperature of the reactant mixture introduced into the prereformer is controlled depending on the composition of the reactant mixture fed to the prereformer.
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公开(公告)号：US20170284874A1
公开(公告)日：2017-10-05
申请号：US15084631
申请日：2016-03-30
CPC分类号： G01K13/02 , B01J15/005 , B01J19/0013 , B01J19/2415 , B01J2219/00051 , C01B3/38 , C01B2203/0233 , C01B2203/0811 , C01B2203/1241 , C01B2203/1619 , G01J5/0044 , G01J2005/0077 , G01K2213/00
摘要： A method for determining temperature information for a plurality of tubes in a furnace where one or more digital images provide temperature information for imaged tubes, and temperature information for non-imaged tubes is determined from the temperature information for the imaged tubes and measured temperatures of combined effluent from the imaged and non-imaged tubes.
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公开(公告)号：US09709269B2
公开(公告)日：2017-07-18
申请号：US14224812
申请日：2014-03-25
CPC分类号： F23L7/007 , F23D1/00 , F23D2201/20 , Y02E20/344
摘要： A solid fuel/oxygen burner including an upstream section, an intermediary section, and a downstream section, a solid fuel conduit extending through the intermediary and downstream sections for transporting a mixture of solid fuel in a transport gas, the solid fuel conduit having a greater cross-sectional area in the downstream section than in the intermediary section, and a tubular fuel separator positioned within the solid fuel conduit in the downstream section, the fuel separator being bounded by an inlet plane and a outlet plane, the fuel separator dividing the fuel conduit into an inner nozzle having a cross-sectional area and an outer annular nozzle having a cross-sectional area, wherein the ratio of the outer nozzle cross-sectional area to the inner nozzle cross-sectional area measured at the outlet plane is greater than 1.
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