-
公开(公告)号：US11988446B2
公开(公告)日：2024-05-21
申请号：US17469823
申请日：2021-09-08
发明人： Alain Briglia , Huali Xie , Yongshun Zhang
IPC分类号： F25J3/04
CPC分类号： F25J3/04448 , F25J3/04084 , F25J3/0409 , F25J3/0423 , F25J3/04436 , F25J3/04454 , F25J2200/08 , F25J2210/40 , F25J2215/42 , F25J2215/50 , F25J2235/02 , F25J2235/42 , F25J2235/50
摘要： A method and apparatus for producing high-purity nitrogen and low-purity oxygen using three-column rectification are provided, in which: nitrogen and oxygen undergo rectification in different columns, with high-purity nitrogen and low-purity oxygen being separated out of air simultaneously, thereby overcoming the shortcomings of conventional low-purity oxygen production equipment, and also reducing equipment investment, lowering energy consumption, increasing product added value, and realizing a circular economy effect.
-
公开(公告)号：US20240035741A1
公开(公告)日：2024-02-01
申请号：US17875727
申请日：2022-07-28
申请人： Neil M. Prosser
发明人： Neil M. Prosser
IPC分类号： F25J3/04
CPC分类号： F25J3/0409 , F25J3/04412 , F25J3/04672 , F25J3/04212 , F25J3/0423 , F25J3/04727 , F25J3/0486 , F25J2200/20 , F25J2230/40
摘要： An air separation unit and associated method for separating air by cryogenic distillation using a distillation column system including a higher pressure column, a lower pressure column, an intermediate pressure kettle column, and an argon column arrangement is provided. The disclosed air separation unit and method is particularly suited for production of an oxygen product as well as several nitrogen products wherein a portion of the nitrogen overhead intermediate pressure kettle column is taken as an intermediate pressure nitrogen product. The present air separation unit and associated method employs a once-through kettle column reboiler, a once-through kettle column condenser, and a once-through argon condenser. The once through argon condenser is disposed within the lower pressure column where an argon-rich vapor stream is condensed against the descending liquid in the lower pressure column.
-
公开(公告)号：US20190204009A1
公开(公告)日：2019-07-04
申请号：US15859979
申请日：2018-01-02
申请人： Neil M. Prosser , Yang Luo , Richard D. Lenz , Kevin J. Saboda
发明人： Neil M. Prosser , Yang Luo , Richard D. Lenz , Kevin J. Saboda
IPC分类号： F25J3/04
CPC分类号： F25J3/04412 , B01D2256/18 , B01D2257/102 , B01D2257/104 , F25J3/0409 , F25J3/04175 , F25J3/04218 , F25J3/0423 , F25J3/04236 , F25J3/04296 , F25J3/04303 , F25J3/04678 , F25J3/04703 , F25J3/04721 , F25J3/04733 , F25J3/048 , F25J3/04884 , F25J3/04963 , F25J3/04969 , F25J2200/94 , F25J2205/60 , F25J2205/82 , F25J2245/42 , F25J2245/58 , F25J2250/02 , F25J2250/52 , F25J2250/58
摘要： A system and method for flexible production of argon from a cryogenic air separation unit is provided. The cryogenic air separation unit is capable of operating in a ‘no-argon’ or ‘low-argon’ mode when argon demand is low or non-existent and then switching to operating in a ‘high-argon’ mode when argon is needed. The recovery of the argon products from the air separation unit is adjusted by varying the percentages of dirty shelf nitrogen and clean shelf nitrogen in the reflux stream directed to the lower pressure column. The cryogenic air separation unit and associated method also provides an efficient argon production/rejection process that minimizes the power consumption when the cryogenic air separation unit is operating in a ‘no-argon’ or ‘low-argon’ mode yet maintains the capability to produce higher volumes of argon products at full design capacity to meet argon product demands.
-
4.发明申请公开(公告)号：US20180299195A1
公开(公告)日：2018-10-18
申请号：US15485635
申请日：2017-04-12
申请人： Nick J. Degenstein
发明人： Nick J. Degenstein
IPC分类号： F25J3/04
CPC分类号： F25J3/04412 , F25J3/0409 , F25J3/04175 , F25J3/04296 , F25J3/04303 , F25J3/04678 , F25J3/04812 , F25J3/04836 , F25J3/04884 , F25J2200/54 , F25J2215/54 , F25J2245/40 , F25J2250/02
摘要： A method for controlling production of high pressure gaseous oxygen in a cryogenic air separation unit that uses a high pressure gaseous oxygen bypass together with adjustments to the split of the incoming compressed and purified air between the boiler air circuit and the turbine air circuit such that the volumetric ratio of the boiler air stream to the turbine air stream is reduced to between about 0.15:1 and 0.35:1.
-
公开(公告)号：US10060672B2
公开(公告)日：2018-08-28
申请号：US14763708
申请日：2014-01-24
发明人： Haibo Wang
CPC分类号： F25J3/0426 , F25J3/04084 , F25J3/0409 , F25J3/04127 , F25J3/04157 , F25J3/04163 , F25J3/04224 , F25J3/04248 , F25J3/04254 , F25J3/04278 , F25J3/04412 , F25J3/04418 , F25J2200/06 , F25J2200/20 , F25J2205/24 , F25J2210/42 , F25J2235/42 , F25J2240/44 , F25J2270/14
摘要： This invention is about an air separation apparatus to produce oxygen and nitrogen through isobaric separation, which is based on the Rankine cycle system of similar thermal energy power circulation apparatus at cryogenic side, a liquid pump is used to input work and the cold is made up to the air separation apparatus with refrigerating media, so as to realize the isobaric separation of air to produce nitrogen and oxygen. The air separation apparatus of this invention can save energy by over 30% as compared with the traditional advanced apparatus with the identical refrigerating capacity, and it can also realize centralize gas supply via the air separation apparatus, therefore it constitutes a breakthrough to the traditional air separation technology and refrigeration theory, with substantial economic, social and environmental protection benefits.
-
公开(公告)号：US20180142950A1
公开(公告)日：2018-05-24
申请号：US15815154
申请日：2017-11-16
CPC分类号： F25J3/0615 , F25J1/0022 , F25J1/0052 , F25J1/0221 , F25J1/0234 , F25J3/04018 , F25J3/04036 , F25J3/0409 , F25J3/04145 , F25J3/04175 , F25J3/04224 , F25J3/0426 , F25J3/0429 , F25J3/04296 , F25J3/04412 , F25J3/04563 , F25J2210/42 , F25J2210/62 , F25J2215/60 , F25J2230/20 , F25J2230/30 , F25J2270/04 , F25J2270/14
摘要： A method for the production of liquefied natural gas (LNG) using a cold fluid provided from a cryogenic unit, such as an air separation unit or nitrogen liquefier, is provided. The method may include the steps of: withdrawing a nitrogen stream from a cryogenic unit, wherein the nitrogen stream is at a temperature between about −155° C. to about −193° C.; and liquefying a natural gas stream in a natural gas liquefaction unit using the nitrogen stream from the cryogenic unit.
-
7.发明申请公开(公告)号：US20180003432A1
公开(公告)日：2018-01-04
申请号：US15637035
申请日：2017-06-29
发明人： Paul KONG , Minh PHAM-HUY , Wendy YIP
IPC分类号： F25J3/02 , B01D3/14 , F25J3/04 , C01B21/04 , B01D3/32 , F15B11/042 , B01J4/00 , F15C1/00 , F15C3/00 , F28B1/00 , B01D5/00
CPC分类号： F25J3/0257 , B01D3/146 , B01D3/322 , B01D3/42 , B01D5/0051 , B01J4/008 , C01B21/0433 , F15B11/0423 , F15C1/002 , F15C3/00 , F25J3/04084 , F25J3/0409 , F25J3/04296 , F25J3/04412 , F25J3/04527 , F25J3/04836 , F25J2290/60 , F28B1/00
摘要： An apparatus for the production of air gases by the cryogenic separation of air can include a cold box having a heat exchanger, and a system of columns; a pressure monitoring device; and a controller. The cold box can be configured to receive a purified and compressed air stream under conditions effective for cryogenically separating the air stream to form an air gas product. The apparatus may also include means for transferring the air gas product from the cold box to an air gas pipeline. The pressure monitoring device is configured to monitor the pipeline pressure, and the controller is configured to determine whether to operate in a power savings mode or a variable liquid production mode. By operating the apparatus in a dynamic fashion, a power savings and/or additional high value cryogenic liquids can be realized in instances in which the pipeline pressure deviates from its highest value.
-
公开(公告)号：US09797654B2
公开(公告)日：2017-10-24
申请号：US14899031
申请日：2014-07-10
申请人： Lars Kirchner , Dimitri Goloubev
发明人： Lars Kirchner , Dimitri Goloubev
CPC分类号： F25J3/04836 , F25J3/04018 , F25J3/04024 , F25J3/0406 , F25J3/0409 , F25J3/04157 , F25J3/04169 , F25J3/04181 , F25J3/04206 , F25J3/04218 , F25J3/0426 , F25J3/04309 , F25J3/04351 , F25J3/04412 , F25J3/04418 , F25J3/04424 , F25J3/04496 , F25J3/04581 , F25J3/04618 , F25J3/04812 , F25J3/0483 , F25J3/0486 , F25J3/04878 , F25J3/04884 , F25J3/04957 , F25J3/0605 , F25J3/066 , F25J2200/06 , F25J2200/54 , F25J2205/32 , F25J2205/34 , F25J2205/62 , F25J2205/70 , F25J2210/50 , F25J2230/04 , F25J2230/24 , F25J2230/30 , F25J2230/42 , F25J2235/52 , F25J2240/70 , F25J2250/04 , F25J2250/40 , F25J2250/50
摘要： A method and device to produce oxygen by the low-temperature separation of air at variable energy consumption. A distillation column system comprises a high-pressure column, a low-pressure column and a main condenser, a secondary condenser and a supplementary condenser. Gaseous nitrogen from the high-pressure column is liquefied in the main condenser in indirect heat exchange with an intermediate liquid from the low-pressure column. A first liquid oxygen stream from the bottom of the low-pressure column is evaporated in the secondary condenser in indirect heat exchange with feed air to obtain a gaseous oxygen product. The supplementary condenser serves as a bottom heating device for the low-pressure column and is heated by means of a first nitrogen stream from the distillation column system, which nitrogen stream was compressed previously in a cold compressor.
-
公开(公告)号：US20170198968A1
公开(公告)日：2017-07-13
申请号：US15468234
申请日：2017-03-24
CPC分类号： F25J3/04733 , B01D53/04 , B01D2253/108 , B01D2256/18 , B01D2257/104 , C01B23/0052 , C01B23/0057 , C01B2210/0014 , C01B2210/0034 , C01B2210/0045 , F25J3/0409 , F25J3/04303 , F25J3/04412 , F25J3/04678 , F25J2205/02 , F25J2205/60 , F25J2205/66 , F25J2215/58 , F25J2220/04 , F25J2245/42
摘要： A method and apparatus for producing a purified liquid argon product in which liquid argon having oxygen impurities is produced in a cryogenic air separation plant by separating argon from oxygen within an argon column. An impure liquid argon stream, composed of part of the liquid argon, is purified in an adsorbent bed by adsorbing the oxygen impurities in an adsorbent to produce a purified liquid argon stream that constitutes the purified liquid argon product. During adsorption, the adsorbent bed is maintained at a reduced temperature with a coolant to prevent vaporization of the liquid argon. The bed is then regenerated by draining residual liquid argon from the adsorbent bed, introducing the residual liquid argon back into the air separation plant and then desorbing the oxygen impurities with a regeneration gas. After regeneration, the adsorbent bed is refilled with purified liquid argon prior to being brought back on-line.
-
公开(公告)号：US09696087B2
公开(公告)日：2017-07-04
申请号：US14110356
申请日：2012-04-05
IPC分类号： F25J3/04
CPC分类号： F25J3/04 , F25J3/0406 , F25J3/0409 , F25J3/04181 , F25J3/04206 , F25J3/04224 , F25J3/04254 , F25J3/04309 , F25J3/04351 , F25J3/04418 , F25J3/04454 , F25J3/0486 , F25J2200/34 , F25J2200/54 , F25J2210/42 , F25J2215/52 , F25J2250/40 , F25J2250/50
摘要： A method for separating air is provided, in which a flow of oxygen-rich liquid is sent to a top of a pure oxygen column, having a pure oxygen reboiler, in which said flow is purified in order to form a vessel liquid containing at least 98 mol % of oxygen and the vessel liquid is drawn off as a product. A supercharged airflow at a second pressure is sent to the pure oxygen reboiler and to a liquid oxygen vaporizer; a nitrogen-rich gas is drawn from the top of the medium-pressure column and sent to an intermediate reboiler of the low-pressure column and the condensed gas is sent to the top of the medium-pressure column; and a nitrogen-rich gas or air is sent to a vessel reboiler of the low-pressure column and the liquid that condenses therein is sent to the medium-pressure column.
-
-
-
-
-
-
-
-
-
搜索结果
698 条记录 (耗时 0.021 秒)
