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发明公开
CN104338489A 一种非均相聚烯烃催化剂连续稳定进料的方法 无效 - 驳回

一种非均相聚烯烃催化剂连续稳定进料的方法
摘要：
本发明涉及一种非均相聚烯烃催化剂连续稳定进料的方法；在催化剂配制釜、储罐和缓冲罐底部增设循环泵，将催化剂送入催化剂配制釜，循环泵每小时的流量是配制釜容积的10～30%，温度在40～60℃，搅拌速度在25～50转/分；将催化剂悬浮液输送到催化剂储罐中，循环泵每小时的流量是储罐容积的10～30%，温度在40～60℃，搅拌速度在25～50转/分；将催化剂输送到催化剂缓冲罐中，缓冲罐的液位在40～60%，循环泵每小时的流量是缓冲罐容积的15～45%，温度在40～60℃，搅拌速度在25～50转/分；本方法获得的催化剂在垂直方向上不会形成浓度梯度，稳定均匀，使聚合反应更加稳定，操作过程易于控制。
摘要（英）：

The invention relates to a heterogeneous polyolefin catalyst continuous and stable feeding method. According to the method, circulation pumps are added at the bottoms of a catalyst preparation kettle, storage tanks, and a buffering tank; the catalyst is delivered into the catalyst preparation tank; the flow of the circulation pump per hour equals 10-30% of the volume of the preparation kettle, the temperature is 40-60 DEG C, and a stirring speed is 25-50r/min; a catalyst suspension liquid is delivered to catalyst storage tanks; the flow of the circulation pumps per hour equals 10-30% of the volumes of the storage tanks, the temperature is 40-60 DEG C, and a stirring speed is 25-50r/min; the catalyst is delivered into the catalyst buffering tank, wherein the liquid level of the buffering tank is 40-60%; and the flow of the circulation pump per hour equals 15-45% of the volume of the buffering tank, the temperature is 40-60 DEG C, and a stirring speed is 25-50r/min. With the method, the obtained catalyst does not form a concentration gradient in a vertical direction, and is stable and uniform, such that a polymerization reaction can be more stable, and the operation process can be easy to control.

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