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    • 2. 发明授权
    • Process and apparatus for the polymerisation of olefins
    • 用于烯烃聚合的方法和设备
    • US09394382B2
    • 2016-07-19
    • US13988794
    • 2011-12-14
    • Andrew David BellJean-Louis ChamayouKevin Peter Ramsay
    • Andrew David BellJean-Louis ChamayouKevin Peter Ramsay
    • C08F2/34B01J8/24B01J8/44C08F10/00C08F110/02
    • C08F10/00C08F2/34C08F110/02C08F2/007
    • Process for gas phase polymerization of olefins in a fluidized bed reactor by (a) passing a fluidizing gas containing at least one olefin monomer through a fluidized bed of polymer particles in the presence of a polymerization catalyst to produce polymer at a polymer production rate of C Tonnes/hour, (b) withdrawing a first gaseous stream containing solid particles from the top of the reactor, (c) passing the first gaseous stream to a gas/solids separator, separating solid particles therefrom, and forming a second gaseous stream containing residual solid particles, (d) passing a portion of the second gaseous stream to at least one heat exchanger to remove heat of reaction whereby residual solid particles contact the heat exchanger, and (e) recycling a portion of the cooled stream from step (d) as the fluidizing gas in step (a). The heat exchangers have a heat exchange surface area which totals less than 120×C m2.
    • 在流化床反应器中通过(a)在聚合催化剂存在下使包含至少一种烯烃单体的流化气体通过聚合物颗粒的流化床将烯烃气相聚合的方法以聚合物生产速率C 吨/小时,(b)从反应器顶部排出含有固体颗粒的第一气态流,(c)将第一气流送至气体/固体分离器,从其中分离固体颗粒,并形成含有残留物的第二气流 固体颗粒,(d)将第二气流的一部分通入至少一个热交换器以除去反应热,由此残留的固体颗粒接触热交换器,和(e)将来自步骤(d)的冷却流的一部分再循环, 作为步骤(a)中的流化气体。 热交换器的热交换面积总计小于120×Cm2。
    • 4. 发明申请
    • PROCESS AND APPARATUS FOR THE POLYMERISATION OF OLEFINS
    • 烯烃聚合的方法和装置
    • US20130253148A1
    • 2013-09-26
    • US13988794
    • 2011-12-14
    • Andrew David BellJean-Louis ChamayouKevin Peter Ramsay
    • Andrew David BellJean-Louis ChamayouKevin Peter Ramsay
    • C08F2/34
    • C08F10/00C08F2/34C08F110/02C08F2/007
    • The present invention relates to a process for the gas-phase polymerisation of olefins in a fluidised bed reactor, which process comprises: a) passing a fluidising gas comprising one or more olefin monomers through a fluidised bed of polymer particles in the presence of a polymerisation catalyst, b) withdrawing a first gaseous stream comprising solid particles from the top of the reactor, c) passing the first gaseous stream to a gas/solids separator, separating solid particles therefrom, and forming a second gaseous stream comprising residual solid particles, d) passing at least a portion of the second gaseous stream to one or more heat exchangers to remove the heat of reaction, and e) recycling at least a portion of the cooled stream from step (d) as the fluidising gas in step (a), characterised in that the rate of fouling of the one or more heat exchangers is such that i) the increase in pressure drop across the heat exchangers is equivalent to less than 5% per year, and/or ii) the decrease in heat transfer of the heat exchangers is equivalent to less than 5% per year.
    • 本发明涉及在流化床反应器中烯烃气相聚合的方法,该方法包括:a)在聚合反应存在下使包含一种或多种烯烃单体的流化气体通过聚合物颗粒的流化床 催化剂,b)从反应器顶部排出包含固体颗粒的第一气流,c)将第一气流送至气/固分离器,从其中分离固体颗粒,形成包含残留固体颗粒的第二气流 )将至少一部分第二气流引导至一个或多个热交换器以除去反应热,以及e)将步骤(d)中的冷却流的至少一部分循环为步骤(a)中的流化气体, 其特征在于,所述一个或多个热交换器的结垢速率使得i)所述热交换器上的压降的增加等于每年小于5%,和/或ii)所述d 热交换器的热传递相当于每年少于5%。
    • 7. 发明授权
    • Method for the production of polymers
    • 生产聚合物的方法
    • US08349975B2
    • 2013-01-08
    • US12737862
    • 2009-09-21
    • Jean-Louis Chamayou
    • Jean-Louis Chamayou
    • C08F2/00C08F210/00C08F10/14C08F10/04C08F110/06C08F110/02
    • B01J8/1809B01J2219/00191C08F6/005C08F210/16C08L23/10C08F2/00C08F210/14C08F210/08
    • Method for transitioning from a first process for producing a first polymer to a second process for producing a second polymer. The first and second processes each include contacting a principal olefin and a comonomer with a catalyst under gas phase polymerization conditions to form the first or second polymer. The first and second processes utilize the same olefin but differ in at least one of the comonomer used and the reaction temperature at which the polymer is produced. The respective first or second polymer is then contacted with a purge gas to remove unreacted monomers. The method includes changing the flow rate of purge gas from a first rate to a second rate defined relative to a flow rate and temperature used for an earlier polymer produced using the same comonomer as the second process.
    • 从用于制备第一聚合物的第一工艺转变为用于制备第二聚合物的第二工艺的方法。 第一和第二方法各自包括在气相聚合条件下使主要烯烃和共聚单体与催化剂接触以形成第一或第二聚合物。 第一和第二方法使用相同的烯烃,但是所用共聚单体和生产聚合物的反应温度中的至少一种不同。 然后将相应的第一或第二聚合物与吹扫气体接触以除去未反应的单体。 该方法包括将吹扫气体的流速从第一速率改变为相对于使用与第二过程相同的共聚单体产生的较早聚合物所使用的流速和温度所限定的第二速率。
    • 8. 发明授权
    • Process for the degassing of polymer power
    • 聚合物动力脱气的方法
    • US08314197B2
    • 2012-11-20
    • US12737910
    • 2009-09-21
    • Jean-Louis ChamayouDaniel Marissal
    • Jean-Louis ChamayouDaniel Marissal
    • C08F210/00C08F10/14C08F110/14C08F10/04
    • C08F6/001
    • Process for producing a degassed polymer powder, by a) feeding i) a principal monomer, and ii) one or more comonomers in an amount of at least 5000 ppmw relative to the principal monomer feed rate, and iii) optionally an added alkane having 2 to 10 carbon atoms, fed in an amount of at least 1000 ppmw relative to the principal monomer feed rate; into a polymerization reactor. The monomer and comonomers react to form a polymer including residual hydrocarbons having one or more hydrocarbons with 3 to 10 carbon atoms, and b) passing the polymer to a degassing step where it is contacted with a purge gas to remove some of the residual hydrocarbons.
    • 通过以下方法制备脱气的聚合物粉末的方法:a)相对于主要单体进料速率喂入i)主要单体和ii)一种或多种相对于主要单体进料速率至少5000ppmw的共聚单体,和iii)任选加入的具有2 至10个碳原子,相对于主要单体进料速率进料至少1000ppmw; 进入聚合反应器。 单体和共聚单体反应形成聚合物,包括具有一个或多个具有3-10个碳原子的烃的残余烃,和b)将聚合物通入脱气步骤,在该步骤中,其与吹扫气体接触以除去一些残留的烃。