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    • 9. 发明申请
    • A SEMI-CONTINUOUS PROCESS FOR THE SYNTHESIS OF A CATALYST FOR USE IN THE MANUFACTURE OF POLYOLEFINS
    • 用于合成聚烯烃用催化剂的半连续方法
    • WO2011077447A2
    • 2011-06-30
    • PCT/IN2010/000809
    • 2010-12-14
    • RELIANCE INDUSTRIES LIMITEDSINGALA, KamleshSINGH, SaurabhGUPTA, Virendrakumar
    • SINGALA, KamleshSINGH, SaurabhGUPTA, Virendrakumar
    • C08F4/652
    • C08F10/06C01G23/0536C01P2004/51C08F110/06Y10S526/908C08F4/651C08F2/14C08F2/00C08F2500/12
    • This invention provides a semi-continuous process and system thereof, for the synthesis of a narrow particle size distribution Zeigler Natta procatalyst for use in the manufacture of polyolefins comprising of following steps: (a) mixing a reaction mixture essentially consisting of titanium compound having at least one titanium halogen bond and a chlorinated solvent in feed section; (b) charging a first reactor with said reaction mixture; (c) continuously removing excess reactants from said first reactor as a filtrate through a filtrate section placed at the bottom of said first reactor; (d) feeding said filtrate to at least one further reactor connected to said first reactor to retain the carried over fine particles from said first reactor; continuously removing excess reactants from said at least further reactor as a filtrate through a filtrate section placed at the bottom of said at least one further reactor and, if desired, feeding said filtrate to next said at least one further reactor; (e) repeating step (d) for n number of times in series, wherein reactors are arranged in series or parallel; (f) subjecting the said filtrate from the last of said at least one further reactor to a distillation section to remove impurities and recover the distillate; and continuously charging the distillate from the distillation section to the feed section; wherein a desired equilibrium between fresh and recovered distillate and a desired resultant concentration of reactant feed are maintained; and (g) optionally treating the residue from distillation section with an alkali to obtain titanium hydroxide and calcining said titanium hydroxide to obtain titanium oxide as a by product.
    • 本发明提供了用于合成用于制造聚烯烃的窄粒径分布齐格勒纳塔主催化剂的半连续方法及其系统,其包括以下步骤:(a)将反应混合物 在进料段中主要由具有至少一个钛卤素键的钛化合物和氯化溶剂组成的混合物; (b)用所述反应混合物装入第一反应器; (c)通过位于所述第一反应器底部的滤液部分作为滤液连续地从所述第一反应器中除去过量的反应物; (d)将所述滤液加入到与所述第一反应器连接的至少一个另外的反应器中以保留来自所述第一反应器的所述携带的细颗粒; 作为滤液通过放置在所述至少一个其他反应器底部的滤液部分连续地从所述至少另一个反应器中除去过量的反应物,并且如果需要,将所述滤液进料到下一个所述至少一个另外的反应器中; (e)重复步骤(d)n次串联,其中反应器串联或并联排列; (f)将来自所述至少一个另外的反应器的最后一个的所述滤液置于蒸馏段以除去杂质并回收馏出物; 并将来自蒸馏部分的馏出物连续加入进料部分; 其中维持新鲜馏分和回收馏分之间的期望平衡以及期望的反应物进料的所得浓度; 和(g)任选地用碱处理来自蒸馏段的残余物以获得氢氧化钛并煅烧所述氢氧化钛以获得作为副产物的氧化钛。