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公开(公告)号：US09790290B2
公开(公告)日：2017-10-17
申请号：US15110669
申请日：2015-02-27
申请人： BOREALIS AG
IPC分类号： C08F2/00 , C08F210/00 , C08F2/34 , C08F2/01
CPC分类号： C08F2/34 , C08F2/01 , C08F110/02
摘要： An olefin polymerization process comprising polymerizing olefins in gas phase in a fluidized bed in the presence of an olefin polymerization catalyst in a polymerization reactor having a vertical body; a generally conical downwards tapering bottom zone; a generally cylindrical middle zone having a height to diameter ratio L/D of at least 4, above and connected to said bottom zone; and a generally conical upwards tapering top zone above and connected to said middle zone wherein (i) fluidization gas is introduced to the bottom zone of the reactor from where it passes upwards through the reactor; (ii) the fluidization gas is withdrawn from the top zone of the reactor, filtered, compressed, cooled and returned into the bottom zone of the reactor; (iii) a fluidized bed is formed within the reactor where the growing polymer particles are suspended in the upwards rising gas stream; and (iv) there is no fluidization grid in the reactor; characterized in that the gas velocity is maintained in the reactor such that NBr is within the range of from 2.5 to 7.
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公开(公告)号：US09539556B2
公开(公告)日：2017-01-10
申请号：US15033010
申请日：2015-02-27
申请人： BOREALIS AG
CPC分类号： B01J8/24 , B01J8/0055 , B01J8/388 , B01J2208/00176 , B01J2208/00796 , B01J2219/1946 , C08F10/00 , C08F10/02 , C08F2500/12 , C08F2500/18 , C08F2/01 , C08F2/34
摘要： The present invention is directed to a process for polymerizing olefins in gas phase in a fluidized bed reactor having a vertical body, a generally conical downwards tapering bottom zone, a generally cylindrical middle zone above the bottom zone, and a generally conical upwards tapering top zone above the middle zone. The fluidization gas is withdrawn from the top zone of the reactor, compressed and cooled so that a part of the fluidization gas condenses and then introduced to the bottom zone of the reactor. The bed is thus cooled upon evaporation of the liquid. There is no fluidization grid in the reactor.
摘要翻译： 本发明涉及一种用于在流化床反应器中气相聚合烯烃的方法，该方法具有垂直体，大致圆锥形的向下锥形底部区域，在底部区域上方的大致圆柱形的中间区域，以及大致圆锥形的向上锥形顶部区域 在中区以上。 流化气体从反应器的顶部区域排出，被压缩和冷却，使得一部分流化气体冷凝，然后被引入反应器的底部区域。 因此，床在液体蒸发时被冷却。 反应器中没有流化栅。
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公开(公告)号：US20220234021A1
公开(公告)日：2022-07-28
申请号：US17616433
申请日：2020-04-06
申请人： Borealis AG
摘要： A process for the production of polyolefins comprising: feeding a slurry comprising at least one polymerization catalyst, at least one carrier liquid, first olefin monomer(s) and optionally at least one first comonomer into at least one loop reactor; polymerizing the first olefin monomer(s) and optionally the at least one first comonomer yielding a first polyolefin; withdrawing the first polyolefin from the loop reactor; feeding the first polyolefin to a gas-solids olefin polymerization reactor, wherein the gas-solids olefin polymerization reactor comprises: a top zone; a middle zone, which comprises a top end in direct contact with said top zone and which is located below said top zone, the middle zone having a generally cylindrical shape; and a bottom zone, which is in direct contact with a bottom end of the middle zone and which is located below the middle zone; introducing a fluidization gas stream into the bottom zone of the gas-solids olefin polymerization reactor; polymerizing second olefin monomer(s) and optionally at least one second comonomer in the presence of the polymerization catalyst and the first polyolefin to a second polyolefin in a dense phase formed by particles of said second polyolefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; introducing a jet gas stream through one or more jet gas feeding ports in a jet gas feeding area of the middle zone at the dense phase in the middle zone of the gas-solids olefin polymerization reactor; withdrawing the second polyolefin from the gas-solids olefin polymerization reactor.
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公开(公告)号：US20210130508A1
公开(公告)日：2021-05-06
申请号：US17051204
申请日：2019-05-29
申请人： BOREALIS AG
摘要： The present invention relates to a process for polymerizing at least one olefin in gas phase in a fluidized bed in a polymerization reactor having a top zone of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically decreasing with respect to the flow direction of the fluidization gas, a middle zone in direct contact with and below said top zone of a generally cylindrical shape and a bottom zone in direct contact and below said middle zone and of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically increasing with respect to the flow direction of the fluidization gas, comprising the steps of: a) introducing a first stream of fluidization gas into the bottom zone; b) polymerizing at least one olefin in the presence of a polymerization catalyst in the fluidized bed formed by particles of a polymer of the at least one olefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; c) withdrawing a second stream comprising the fluidization gas and optionally particles of a polymer of the at least one olefin from the top zone; characterized in that the temperature of the particles of the polymer of the at least one olefin in the fluidized bed (TPP) does not exceed 120% of the operating temperature set point (TS) of the polymerization reactor, wherein TPP and TS are both given in ° C., and the use of said process for polymerizing an olefin homo- or copolymer having a narrow particle size distribution.
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公开(公告)号：US10676544B2
公开(公告)日：2020-06-09
申请号：US15773040
申请日：2016-11-22
申请人： Borealis AG
摘要： A process for polymerising alpha-olefin monomers in a loop reactor comprising the steps of introducing a main feed stream (2) comprising at least one alpha-olefin monomer into the loop reactor (1); introducing a polymerisation catalyst into the loop reactor (1); polymerising the at least one alpha-olefin monomer in the presence of the polymerisation catalyst in the loop reactor (1) to produce a slurry comprising polyolefin particles; withdrawing an outlet stream (4) comprising at least a portion of the slurry from the loop reactor (1); adding a first feed stream (9) comprising the at least one alpha-olefin monomer and/or hydrogen to the outlet stream (4) to form a concentrator inlet stream (8); introducing the concentrator inlet stream (8) into a concentrator (5); withdrawing from the concentrator (5) an overflow stream (6) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the overflow stream (6) is smaller than in the concentrator inlet stream (8); withdrawing from the concentrator (5) a bottom outlet stream (12) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the bottom outlet stream (12) is greater than in the concentrator inlet stream (8); returning the overflow stream (6) into the loop reactor (1) in an area different from that from which the outlet stream (4) is withdrawn.
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公开(公告)号：US20190270830A1
公开(公告)日：2019-09-05
申请号：US16319969
申请日：2017-09-18
申请人： Borealis AG
IPC分类号： C08F6/00 , B01D3/06 , C08F210/02 , C08F220/18 , C08F118/08 , C08F30/08
摘要： The present invention is directed to a process for separating an olefm copolymer from volatile gases using a flash separator. The flash separator can be used with a solution or high pressure process. The mass transport of volatile gases from the viscous polymer melt is increased.
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公开(公告)号：US20180327518A1
公开(公告)日：2018-11-15
申请号：US15773040
申请日：2016-11-22
申请人： Borealis AG
摘要： A process for polymerising alpha-olefin monomers in a loop reactor comprising the steps of introducing a main feed stream (2) comprising at least one alpha-olefin monomer into the loop reactor (1); introducing a polymerisation catalyst into the loop reactor (1); polymerising the at least one alpha-olefin monomer in the presence of the polymerisation catalyst in the loop reactor (1) to produce a slurry comprising polyolefin particles; withdrawing an outlet stream (4) comprising at least a portion of the slurry from the loop reactor (1); adding a first feed stream (9) comprising the at least one alpha-olefin monomer and/or hydrogen to the outlet stream (4) to form a concentrator inlet stream (8); introducing the concentrator inlet stream (8) into a concentrator (5); withdrawing from the concentrator (5) an overflow stream (6) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the overflow stream (6) is smaller than in the concentrator inlet stream (8); withdrawing from the concentrator (5) a bottom outlet stream (12) comprising the polyolefin particles, wherein the concentration of the polyolefin particles in the bottom outlet stream (12) is greater than in the concentrator inlet stream (8); returning the overflow stream (6) into the loop reactor (1) in an area different from that from which the outlet stream (4) is withdrawn.
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公开(公告)号：US20160355613A1
公开(公告)日：2016-12-08
申请号：US15110669
申请日：2015-02-27
申请人： BOREALIS AG
CPC分类号： C08F2/34 , C08F2/01 , C08F110/02
摘要： An olefin polymerization process comprising polymerizing olefins in gas phase in a fluidized bed in the presence of an olefin polymerization catalyst in a polymerization reactor having a vertical body; a generally conical downwards tapering bottom zone; a generally cylindrical middle zone having a height to diameter ratio L/D of at least 4, above and connected to said bottom zone; and a generally conical upwards tapering top zone above and connected to said middle zone wherein (i) fluidization gas is introduced to the bottom zone of the reactor from where it passes upwards through the reactor; (ii) the fluidization gas is withdrawn from the top zone of the reactor, filtered, compressed, cooled and returned into the bottom zone of the reactor; (iii) a fluidized bed is formed within the reactor where the growing polymer particles are suspended in the upwards rising gas stream; and (iv) there is no fluidization grid in the reactor; characterized in that the gas velocity is maintained in the reactor such that NBr is within the range of from 2.5 to 7.
摘要翻译： 一种烯烃聚合方法，包括在具有垂直体的聚合反应器中，在烯烃聚合催化剂存在下，在流化床中气相聚合烯烃; 大致圆锥形的向下锥形底部区域; 大致圆柱形的中间区域，其高度与直径之比L / D至少为4，高于并连接到所述底部区域; 以及在所述中间区域上方并连接到所述中间区域的大致锥形的向上锥形顶部区域，其中（i）流化气体被引导到反应器的底部区域，从该区域向上通过反应器; （ii）流化气体从反应器的顶部区域排出，过滤，压缩，冷却并返回到反应器的底部区域; （iii）在反应器内形成流化床，其中生长的聚合物颗粒悬浮在向上升的气流中; 和（iv）反应器中不存在流化栅; 其特征在于，气体速度保持在反应器中，使得NBr在2.5至7的范围内。
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公开(公告)号：US12018102B2
公开(公告)日：2024-06-25
申请号：US17051204
申请日：2019-05-29
申请人： BOREALIS AG
CPC分类号： C08F2/34 , B01J8/0055 , B01J8/08 , B01J8/1827 , B01J8/1872 , B01J8/24 , C08F10/02 , C08F210/16 , C08F210/16 , C08F210/08 , C08F2500/24 , C08F110/02 , C08F2/001 , C08F110/02 , C08F4/6492
摘要： The present invention relates to a process for polymerizing at least one olefin in gas phase in a fluidized bed in a polymerization reactor having a top zone of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically decreasing with respect to the flow direction of the fluidization gas, a middle zone in direct contact with and below said top zone of a generally cylindrical shape and a bottom zone in direct contact and below said middle zone and of a generally conical shape as such that the equivalent cross-sectional diameter is monotonically increasing with respect to the flow direction of the fluidization gas, comprising the steps of: a) introducing a first stream of fluidization gas into the bottom zone; b) polymerizing at least one olefin in the presence of a polymerization catalyst in the fluidized bed formed by particles of a polymer of the at least one olefin suspended in an upwards flowing stream of the fluidization gas in the middle zone; c) withdrawing a second stream comprising the fluidization gas and optionally particles of a polymer of the at least one olefin from the top zone; characterized in that the temperature of the particles of the polymer of the at least one olefin in the fluidized bed (TPP) does not exceed 120% of the operating temperature set point (TS) of the polymerization reactor, wherein TPP and TS are both given in ° C., and the use of said process for polymerizing an olefin homo- or copolymer having a narrow particle size distribution.
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公开(公告)号：US10358507B2
公开(公告)日：2019-07-23
申请号：US15562323
申请日：2016-03-24
申请人： BOREALIS AG
发明人： Mohammad Al-Haj Ali , Vasileios Kanellopoulos , Apostolos Krallis , Henry Sleijster , Samuli Zitting
摘要： The present invention is directed to a process for separating hydrocarbons from a solution comprising a polymer. The process comprises the steps of: (A) withdrawing a solution stream comprising the polymer from a first vessel; (B) passing the solution stream into a flash vessel; (C) spraying the solution stream into droplets in the first flash vessel thereby establishing a stream of droplets within the flash vessel. The solution forms a downwards falling film within the flash vessel.
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