-
1.发明公开公开(公告)号：US20240210106A1
公开(公告)日：2024-06-27
申请号：US18288745
申请日：2022-03-10
发明人： Michael TRAN , Mathieu LECLERC
CPC分类号： F25J3/08 , F25J3/0266 , F25J2210/06 , F25J2210/80 , F25J2215/80 , F25J2220/82 , F25J2235/80 , F25J2245/02 , F25J2280/02
摘要： In a method for separating a flow containing at least 95 mol % of carbon dioxide and at least one impurity lighter than carbon dioxide by distillation, the flow is cooled to a first intermediate temperature between those of the cold end and the hot end of a heat exchange means in order to form a liquid flow at a first temperature and a first pressure and it is split into at least two to form a first fraction and a second fraction, the first fraction is expanded to the pressure of a distillation column, referred to as second pressure, which is lower than the first pressure, and it is sent to an intermediate level of the distillation column, the second fraction is cooled in the heat exchange means to the cold end thereof, it is expanded to the pressure of the distillation column and is sent to a level of the distillation column above the point of arrival of the first fraction, a liquid flow containing at least 99 mol % of carbon dioxide is withdrawn from the bottom of the column, and a fraction of the liquid flow is pressurized in a pump and sent to the top of the column.
-
公开(公告)号：US20240255218A1
公开(公告)日：2024-08-01
申请号：US18290045
申请日：2022-05-04
CPC分类号： F25J1/0027 , F25J1/0045 , F25J1/0202 , F25J1/0274 , F25J2220/82 , F25J2290/34
摘要： A method for liquefying a CO2-rich gas flow containing at least 90 mol % of CO2 involves the following steps: compressing the CO2-rich gas flow, liquefying and separating in order to produce a first liquid flow at a first pressure MP and a first temperature T1. Extracting part of the first liquid flow at the first pressure and the first temperature by way of first product, supercooling part of the first liquid flow down to a temperature below the first temperature by indirect exchange of heat in a heat exchanger, expanding the liquid supercooled down to the second temperature T2 until it reaches a second pressure lower than the first pressure, the second pressure being equal to or greater than the equilibrium pressure of the expanded liquid, and extracting part of the expanded liquid by way of second product and evaporating another part of the liquid in the heat exchanger by exchange of heat with the part of the first flow in order to produce a vaporized liquid.
-
公开(公告)号：US20240310117A1
公开(公告)日：2024-09-19
申请号：US18280052
申请日：2022-02-28
IPC分类号： F25J3/02
CPC分类号： F25J3/0266 , F25J2235/80 , F25J2290/34
摘要： An apparatus for separation of a flow containing at least 95 mol % of carbon dioxide and also at least one impurity lighter than carbon dioxide by distillation comprises a heat exchanger (20), a distillation column (30), expansion means (V3), means for sending the flow to be cooled in the heat exchanger, means for sending the cooled flow to be separated in the distillation column, means for withdrawing at the bottom of the column a liquid flow containing at least 99 mol % of carbon dioxide, means for sending at least a portion (12) of the liquid flow to be cooled in the heat exchanger to form a subcooled liquid (3), means for sending at least a portion of the subcooled liquid to the expansion means to produce a two-phase flow, a phase separator (40) for separating the two-phase flow to form a gas and a liquid, means for sending at least a portion (14) of the liquid from the phase separator to be vaporized in the heat exchanger and means for taking a portion (4) of the liquid from the phase separator.
-
4.发明公开公开(公告)号：US20240101430A1
公开(公告)日：2024-03-28
申请号：US18274578
申请日：2022-01-27
发明人： Michael TRAN , Mathieu LECLERC
摘要： An apparatus for the separation of a flow containing carbon dioxide by distillation comprising a heat exchange means, a distillation column, means for sending the flow to be cooled in the heat exchange means down to a first intermediate temperature in order to form a liquid flow at a first temperature and at a first pressure, means for dividing the liquid flow in order to form a first fraction and a second fraction, means for expanding the first fraction to the pressure of a distillation column, means for sending the expanded first fraction to an intermediate level of the distillation column, means for exiting the second fraction from the cold end of the heat exchange means after cooling, means for expanding the cooled second fraction to the pressure of the distillation column, means for sending the second fraction to the distillation column and means for the withdrawal, from the bottom of the column, of a liquid flow.
-
公开(公告)号：US20240068744A1
公开(公告)日：2024-02-29
申请号：US18280060
申请日：2022-03-02
发明人： Michael TRAN , Mathieu LECLERC
CPC分类号： F25J1/0027 , F25J1/0045 , F25J1/0095 , F25J1/0202 , F25J2205/04 , F25J2210/80 , F25J2230/80 , F25J2240/40 , F25J2270/80
摘要： In a method for liquefying a gas rich in carbon dioxide, the gas is compressed to a first pressure greater than its critical pressure in a compressor to form a compressed gas, the compressed gas is cooled through heat exchange with a refrigerant to a variable temperature to form a cooled compressed gas with a density between 370 and 900 kg/m3, the cooled compressed gas is cooled at supercritical pressure in a first heat exchanger to a temperature below the critical temperature, the gas cooled below the critical temperature is expanded to a second pressure between 45 and 60 bara to form a diphasic fluid which is separated in a phase separator to form a liquid and a gas, and a liquid portion originating from the phase separator provides cold to the first heat exchanger.
-
-
-
-
搜索结果
5 条记录 (耗时 0.018 秒)
