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公开(公告)号：US10899974B2
公开(公告)日：2021-01-26
申请号：US15926099
申请日：2018-03-20
发明人： Paul R. Davies , Michael J. Calderon , Dale L. Embry , David W. Larkin , Qi Ma
摘要： The invention relates to various nonlimiting embodiments that include methods, apparatuses or systems for processing natural gas comprising a heavies removal column processing natural gas and light oil reflux. The overhead stream goes to heavies treated natural gas storage. The heavies removal column reboiler bottoms stream product is input to a debutanizer column. The debutanizer column overhead lights are input to a flash drum where the bottoms is pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the debutanizer reboiler bottoms product is stored as stabilized condensate. Alternatively, debutanizer column overhead lights are sent to heavies treated gas storage and the bottoms stream product goes to a depentanizer column, the overhead lights are pumped through a heat exchanger as a light oil reflux input to the heavies removal column, while the depentanizer reboiler bottoms product is stabilized condensate.
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公开(公告)号：US09335091B2
公开(公告)日：2016-05-10
申请号：US13951021
申请日：2013-07-25
发明人： Wesley Roy Qualls , Qi Ma , Megan Victoria Evans , Karl Lee Herzog , Jame Yao , Mohan Chahal , Matt Calvin Gentry , Attilio Jose Praderio , Marc Thomas Bellomy , Satish Gandhi , Mike Wilkes , Will James
CPC分类号： F25J1/0022 , F25J1/004 , F25J1/0045 , F25J1/0052 , F25J1/0082 , F25J1/0085 , F25J1/0087 , F25J1/0209 , F25J1/021 , F25J1/0217 , F25J1/0238 , F25J1/0245 , F25J3/0209 , F25J3/0233 , F25J3/0257 , F25J2200/08 , F25J2200/40 , F25J2200/70 , F25J2200/76 , F25J2215/60 , F25J2220/64 , F25J2245/42 , F25J2270/02 , F25J2270/42
摘要： Methods and systems for removing nitrogen during liquefaction of natural are provided. Methods of removing nitrogen include warming a predominantly methane stream in a methane cold box to provide a warmed predominantly methane stream; conducting at least a portion of the warmed predominantly methane stream from the methane cold box to a nitrogen removal unit comprising at least a first nitrogen removal column and a last nitrogen removal column, wherein the first nitrogen removal column is located upstream of the last nitrogen removal column; passing the warmed predominantly methane stream through the last nitrogen removal column to provide a refluxed warmed predominantly methane stream; and routing at least a portion of the refluxed warmed predominantly methane stream to the last nitrogen removal column.
摘要翻译： 提供了在天然液化过程中除氮的方法和系统。 去除氮的方法包括在甲烷冷箱中主要加热甲烷流，以提供主要为暖气的甲烷流; 将来自甲烷冷箱的至少一部分加热的主要甲烷物流引导至至少包括第一除氮塔和最后一个除氮塔的除氮单元，其中第一除氮塔位于最后一个氮气去除的上游 柱; 将主要温热的甲烷流通过最后一个除氮塔，以提供回流温热的主要甲烷物流; 并将至少一部分回流加热的主要甲烷物流路由至最后一个除氮塔。
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公开(公告)号：US11604025B2
公开(公告)日：2023-03-14
申请号：US17072565
申请日：2020-10-16
发明人： Jinghua Chan , Qi Ma , Dale L. Embry , Attilio J. Praderio
摘要： Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a dry feed gas is received. The dry feed gas is chilled with clean vapor from a heavies removal column to form a chilled feed gas. The chilled feed gas is partially condensed into a vapor phase and a liquid phase. The liquid phase retains freezing components. The freezing components are extracted using a reflux stream in the heavies removal column. The freezing components are removed as a condensate. The vapor phase is compressed into a clean feed gas. The clean feed gas is free of the freezing components for downstream liquefaction.
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公开(公告)号：US20210116173A1
公开(公告)日：2021-04-22
申请号：US17072565
申请日：2020-10-16
发明人： Jinghua Chan , Qi Ma , Dale L. Embry , Attilio J. Praderio
摘要： Implementations described and claimed herein provide systems and methods for processing liquefied natural gas (LNG). In one implementation, a dry feed gas is received. The dry feed gas is chilled with clean vapor from a heavies removal column to form a chilled feed gas. The chilled feed gas is partially condensed into a vapor phase and a liquid phase. The liquid phase retains freezing components. The freezing components are extracted using a reflux stream in the heavies removal column. The freezing components are removed as a condensate. The vapor phase is compressed into a clean feed gas. The clean feed gas is free of the freezing components for downstream liquefaction.
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公开(公告)号：US11320197B2
公开(公告)日：2022-05-03
申请号：US15925873
申请日：2018-03-20
发明人： Dale L. Embry , Paul R. Davies , Qi Ma , David W. Larkin , Michael J. Calderon
摘要： The invention relates to a system, method and apparatus for removing heavies from natural gas. Natural gas and an external rich reflux gas feed are processed in a single column refluxed absorber. A bottoms stream is routed to a first heat exchanger and then to a stabilizer column where an overhead stream from the stabilizer column is routed through a condenser for partial separation into an overhead stream. A rich solvent may be introduced to the stabilizer column. The overhead stream is routed through a condenser for partial separation into a stabilizer reflux and a second overhead stream lights. The second overhead stream lights is routed to a heat exchanger and then routed to a partial condenser where the stream is separated into a heavies rich reflux stream, a distillate stream and heavies treated natural gas stream. The rich reflux is routed through a heat exchanger and the rich reflux is pumped to the single column refluxed absorber to be introduced into the single column refluxed absorber as the external rich reflux gas feed.
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公开(公告)号：US20210095918A1
公开(公告)日：2021-04-01
申请号：US17060586
申请日：2020-10-01
发明人： Michael J. Calderon , Will T. James , Dale L. Embry , Jinghua Chan , Qi Ma
摘要： Disclosed herein are systems and processes for removing heavies during the liquefaction of a natural gas. The processes include dissolving the heavies in the natural gas by adding external natural gas liquid (NGL), followed by a staged removal of the natural gas liquid (NGL) and dissolved heavies.
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