One question per day; those who answer correctly receive 6 wealth points, while participants receive 2 wealth points； February 27th
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Multiple-choice question: The ( ) installed on the mixer is there to prevent excessive free chlorine in the HCl gas from leading to the formation of chloroacetylene and the release of large amounts of heat; this would cause the gas to expand rapidly, resulting in excessively high pressure that could damage the weakest components in the system, such as the mixer cooler and the acid drainage pipelines. A. Safety valve B. Explosion-proof membrane C. Vent pipe D. Pressure relief valve Answer: B, Explosion-proof membrane
The (B) installed on the mixer is intended to prevent excessive free chlorine in the HCl gas from leading to the formation of chloroacetylene, which in turn generates a large amount of heat. This causes the gas to expand rapidly, resulting in excessively high pressure that could damage the weakest components in the system, such as the mixer cooler and the acid drainage pipelines. A. Safety valve B. Explosion-proof membrane C. Vent pipe D. Pressure relief valve