One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； Question 452
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Multiple-choice question: During the polymerization process, violent polymerization in the polymerization reactor occurs because the heat generated during polymerization cannot be removed in time, causing the temperature of the system to rise and thus accelerating the reaction rate. This creates a vicious cycle that leads to a sharp increase in the temperature and pressure inside the reactor. The material inside the reactor sticks together as a result. The possible causes for this are ( ) A. The mixing mechanism was not turned on at the time of adding the polymerizing materials ； B. Dispersant not added or added in small amounts ； C. Excessive initiator, insufficient cooling water volume ； D. Mixing blade detachment or mechanical failure ； Answer: ABCD
During the polymerization process, violent polymerization occurs in the polymerization reactor; as the heat generated during polymerization cannot be removed in time, the temperature of the system rises, which accelerates the reaction rate. This creates a vicious cycle that leads to a sharp increase in the temperature and pressure inside the reactor. The material inside the reactor sticks together as a result of this, and the possible causes for this phenomenon are (A, B, C, D)
A. The mixer was not turned on during polymer feeding ； B. Dispersant not added or added in small amounts ； C. Excessive initiator, insufficient cooling water volume ； D. Mixing blade detachment or mechanical failure ；
During the polymerization process, violent polymerization occurs in the polymerization reactor; as the heat generated during polymerization cannot be removed in time, the temperature of the system rises, which accelerates the reaction rate. This creates a vicious cycle that leads to a sharp increase in the temperature and pressure inside the reactor. The material inside the reactor sticks together as a result of this. The possible causes could be (A, B, C, D): A. The mixing mechanism was not turned on at the time of adding the polymerizing materials ； B. Dispersant not added or added in small amounts ； C. Excessive initiator, insufficient cooling water volume ； D. Mixing blade detachment or mechanical failure ；
During the polymerization process, violent polymerization occurs in the polymerization reactor; as the heat generated during polymerization cannot be removed in time, the temperature of the system rises, which accelerates the reaction rate. This creates a vicious cycle that leads to a sharp increase in the temperature and pressure inside the reactor. The material inside the reactor sticks together as a result of this. The possible causes could be (ABCD): A. The mixing mechanism was not turned on at the time of adding the polymerizing materials ； B. Dispersant not added or added in small amounts ； C. Excessive initiator, insufficient cooling water volume ； D. Mixing blade detachment or mechanical failure ；