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    • 2. 发明申请
    • METHOD FOR SEED BED TREATMENT BEFORE A POLYMERIZATION REACTION
    • 聚合反应之前的种子处理方法
    • WO2007037839A1
    • 2007-04-05
    • PCT/US2006/032621
    • 2006-08-22
    • UNIVATION TECHNOLOGIES, LLCPANNELL, Richard, B.AGAPIOU, Agapios, K.MARKEL, Eric, J.
    • PANNELL, Richard, B.AGAPIOU, Agapios, K.MARKEL, Eric, J.
    • C08F10/00C08F2/34
    • C08F10/00Y02P20/582C08F2/34C08F2/005
    • In some embodiments, a method in which at least one continuity additive ("CA") and a seed bed are pre-loaded into a reactor, and a polymerization reaction is optionally then performed in the reactor. In other embodiments, at least one flow improver, at least one CA, and a seed bed are pre-loaded into a reactor. Pre¬ loading of a reactor with a CA can significantly improve continuity of a subsequent polymerization reaction in the reactor during its initial stages, including by reducing sheeting and fouling. The CA can be pre-loaded in dry form (e.g., as a powder), or in liquid or slurry form (e.g., as an oil slurry). To aid delivery of a dry CA to the reactor and combination of the dry CA with a seed bed in the reactor, the dry CA can be combined with a flow improver and the combination of CA and flow improver then loaded into the reactor. Alternatively, the CA and flow improver can be sequentially loaded into the reactor, and then mixed together (and mixed with a seed bed) in the reactor after both the CA and flow improver have been separately loaded into the reactor.
    • 在一些实施方案中,其中将至少一种连续性添加剂(“CA”)和种子床预加载到反应器中的方法,然后任选地在反应器中进行聚合反应。 在其它实施方案中,将至少一种流动改进剂,至少一种CA和种子床预加载到反应器中。 具有CA的反应器的预加载可以显着改善反应器在其初始阶段期间的后续聚合反应的连续性,包括通过减少片材和结垢。 CA可以以干燥形式(例如,作为粉末)或以液体或浆料形式(例如作为油浆)预加载。 为了帮助将干燥的CA输送到反应器中并将干燥的CA与反应器中的种子床的组合,干燥的CA可与流动改进剂组合,然后将CA和流动改进剂的组合装入反应器中。 或者,CA和流动改进剂可以顺序加载到反应器中,然后在CA和流动改进剂已经分别装载到反应器中之后混合在一起(并与种子床混合)在反应器中。