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One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； October 13th

2016-10-13View Original

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Multiple-choice question: In the VCM distillation process using the calcium carbide method, the main reasons for a high content of high-boiling substances in the pure monomer are ( ). A. High temperature at the bottom of the tower B. Low reflux rate C. Unstable liquid level control D. Failure to remove high-boiling substances in a timely manner. Answer: ABCD
Reply #22016-10-13
A. High bottom temperature of the tower B. Low reflux rate C. Unstable liquid level control D. Failure to remove high-boiling substances in a timely manner
Reply #32016-10-13
In the VCM distillation process using the calcium carbide method, the main reasons for a high content of high-boiling substances in the purified monomer are (ABCD): A. High temperature at the bottom of the tower; B. Low reflux rate; C. Unstable liquid level control; D. Failure to remove high-boiling substances in a timely manner

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Translated at 2026-07-20 23:15:23

Original: https://bbs.hcbbs.com/thread-1631834-1-1.html

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