公开(公告)号：US20240318910A1

公开(公告)日：2024-09-26

申请号：US18124795

申请日：2023-03-22

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

CPC分类号： F25J3/0214 ,  F25J3/0242 ,  F25J2210/06 ,  F25J2210/62 ,  F25J2215/62 ,  F25J2215/64

摘要： A system and method for enhancing propane recovery in a GSP system operated in an ethane rejection mode using an add-on system comprising a heat exchanger and a condenser and optionally a reflux column having 0-5 theoretical stages. An overhead stream from a GSP fractionation column and a subcooled expanded GSP stream are diverted from the typical GSP process for processing in the add-on system to provide an additional reflux stream that increases the amount of ethane and propane that feeds into a top level of the GSP fractionation column. In ethane rejection mode, the add-on system results in an NGL product stream preferably comprising less than 6% of the ethane and at least 97% of the propane from the GSP feed stream.

公开(公告)号：US11561043B2

公开(公告)日：2023-01-24

申请号：US16420547

申请日：2019-05-23

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

摘要： A system and method for producing an LNG product stream to provide fuel to generators, as an alternative to diesel, to power drilling and other equipment. Using sales gas from a natural gas/NGL plant containing less than 95% methane as a feed stream, production of LNG having 95% or more methane in quantities of 100,000 GPD or more LNG product are achievable with the system and method. The system and method preferably combine use of strategic heat exchange between the feed and a nitrogen-methane flash vapor stream and other streams within the LNG processing system without requiring heat exchange with process streams in the natural gas/NGL plant and a rectifier column that uses an internal knockback condenser and does not require a reboiler to remove heavier components from the sales gas feed.

公开(公告)号：US20220111329A1

公开(公告)日：2022-04-14

申请号：US17070674

申请日：2020-10-14

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： B01D53/14 ,  B01D53/00

摘要： A system and method for simultaneously removing water and acid gases from methane in a single process without requiring dehydration prior to acid gas removal. A feed stream comprising these components and little or no hydrocarbons heavier than methane is separated in a series of separators, including an absorber column using methanol as an absorber. A treated methane stream comprising at least 90%, more preferably at least 95%, most preferably at least 99%, of the methane from the feed stream and an acid gas waste stream comprising less than 10%, more preferably less than 5%, most preferably less than 1%, of the methane from the feed stream are produced. Using methanol as a physical solvent allows removal of water and acids gases in a single step using substantially less energy than conventional separation methods. The system and method are particularly useful in treating landfill gas feed streams.

公开(公告)号：US11650009B2

公开(公告)日：2023-05-16

申请号：US16852770

申请日：2020-04-20

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

CPC分类号： F25J3/0257 ,  F25J3/0209 ,  F25J2200/06 ,  F25J2200/40 ,  F25J2200/50 ,  F25J2200/72 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2240/12 ,  F25J2245/00 ,  F25J2270/12

摘要： A system and method for removing nitrogen from natural gas using two fractionating columns, that may be stacked, and a plurality of separators and heat exchangers, with horsepower requirements that are 50-80% of requirements for prior art systems. The fractionating columns operate at different pressures. A feed stream is separated with a vapor portion feeding the first column to produce a first column bottoms stream that is split into multiple portions at different pressures and first column overhead stream that is split or separated into two portions at least one of which is subcooled prior to feeding the top of the second column. Optional heat exchange between first column and second column streams provides first column reflux and reboil heat for a second column ascending vapor stream. Three sales gas streams are produced, each at a different pressure.

公开(公告)号：US20210180864A1

公开(公告)日：2021-06-17

申请号：US16852770

申请日：2020-04-20

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

摘要： A system and method for removing nitrogen from natural gas using two fractionating columns, that may be stacked, and a plurality of separators and heat exchangers, with horsepower requirements that are 50-80% of requirements for prior art systems. The fractionating columns operate at different pressures. A feed stream is separated with a vapor portion feeding the first column to produce a first column bottoms stream that is split into multiple portions at different pressures and first column overhead stream that is split or separated into two portions at least one of which is subcooled prior to feeding the top of the second column. Optional heat exchange between first column and second column streams provides first column reflux and reboil heat for a second column ascending vapor stream. Three sales gas streams are produced, each at a different pressure.

公开(公告)号：US11015865B2

公开(公告)日：2021-05-25

申请号：US16218815

申请日：2018-12-13

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

摘要： A system and method for producing an NGL product stream in either an ethane retention or rejection mode. Rejection modes include (a) two heat exchange stages between a feed stream and first separator bottoms stream and cooling a side stream withdrawn from a fractionation tower through heat exchange with both the fractionation tower and second separator overhead streams; or (b) warming the first separator bottoms stream and fractionation overhead stream through heat exchange with the side stream prior to heat exchange with the feed stream, to achieve 4-15% ethane recovery and 97%+ propane recovery. In ethane retention mode, a portion of the feed stream and portions of a first separator overhead and bottoms streams are separately cooled through heat exchange with other process streams, including the entireties of a recycled residue gas and fractionation column overhead streams, resulting in around 99% ethane and around 100% propane recovery.

公开(公告)号：US11745136B2

公开(公告)日：2023-09-05

申请号：US17070674

申请日：2020-10-14

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： B01D53/14 ,  B01D53/00 ,  F25J3/02

CPC分类号： B01D53/1406 ,  B01D53/002 ,  B01D53/1462 ,  B01D53/1468 ,  B01D53/1475 ,  F25J3/0233

摘要： A system and method for simultaneously removing water and acid gases from methane in a single process without requiring dehydration prior to acid gas removal. A feed stream comprising these components and little or no hydrocarbons heavier than methane is separated in a series of separators, including an absorber column using methanol as an absorber. A treated methane stream comprising at least 90%, more preferably at least 95%, most preferably at least 99%, of the methane from the feed stream and an acid gas waste stream comprising less than 10%, more preferably less than 5%, most preferably less than 1%, of the methane from the feed stream are produced. Using methanol as a physical solvent allows removal of water and acids gases in a single step using substantially less energy than conventional separation methods. The system and method are particularly useful in treating landfill gas feed streams.

公开(公告)号：US20230235955A1

公开(公告)日：2023-07-27

申请号：US18129630

申请日：2023-03-31

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

CPC分类号： F25J3/0257 ,  F25J3/0209 ,  F25J2200/06 ,  F25J2200/40 ,  F25J2200/72 ,  F25J2270/12 ,  F25J2200/50 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2245/00 ,  F25J2240/12

摘要： A system and method for removing nitrogen from natural gas using two fractionating columns, that may be stacked, and a plurality of separators and heat exchangers, with horsepower requirements that are 50-80% of requirements for prior art systems. The fractionating columns operate at different pressures. A feed stream is separated with a vapor portion feeding the first column to produce a first column bottoms stream that is split into multiple portions at different pressures and first column overhead stream that is split or separated into two portions at least one of which is subcooled prior to feeding the top of the second column. Optional heat exchange between first column and second column streams provides first column reflux and reboil heat for a second column ascending vapor stream. Three sales gas streams are produced, each at a different pressure.

公开(公告)号：US11378333B2

公开(公告)日：2022-07-05

申请号：US16714110

申请日：2019-12-13

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J3/02

摘要： A system and method for removing nitrogen from natural gas using two fractionating columns, that may be stacked, and a plurality of separators and heat exchangers, with horsepower requirements that are 50-80% of requirements for prior art systems. The fractionating columns operate at different pressures. A feed stream is separated with a vapor portion feeding the first column to produce a first column bottoms stream that is split into multiple portions at different pressures and first column overhead stream that is cooled and separated into vapor and liquid portions to control subcooling of the vapor portion prior to feeding the second column. Heat exchange between first column and second column streams provides first column reflux and reboil heat for a second column ascending vapor stream. Three sales gas streams are produced, each at a different pressure.

公开(公告)号：US11125497B2

公开(公告)日：2021-09-21

申请号：US16677378

申请日：2019-11-07

申请人： BCCK Holding Company

发明人： Rayburn C. Butts

IPC分类号： F25J5/00 ,  F25J3/02

摘要： A system and method for removing nitrogen and producing a high pressure methane product stream and an NGL product stream from natural gas feed streams where at least 90%, and preferably at least 95%, of the ethane in the feed stream is recovered in the NGL product stream. The system and method of the invention are particularly suitable for use with feed streams in excess of 5 MMSCFD and up to 300 MMSCFD and containing around 5% to 80% nitrogen. The system and method preferably combine use of strategic heat exchange between various process streams with a high pressure rectifier tower and the ability to divert all or a portion of a nitrogen rejection unit feed stream to optionally bypass a nitrogen fractionation column to reduce capital costs and operating expenses.