One Question per Day on Refining Knowledge (Technology) 110106

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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refinery processing technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this activity is 5 Wealth points, and rating charm is prohibited. Friendship requests and duplicate ratings are also declined. Be careful when posting; editing is ineffective! Those who have different opinions on the provided answer keys can post discussions the next day; those who provide solutions or their own opinions regarding the daily question’s answer key will receive appropriate rewards! The focus is on participation, and there are prizes for participating! ) 1. During the heating process of the furnace tubes in a heating furnace, the main reason for the destruction of these tubes is (　　). A. The heating furnace is overheating. B. The flow rate of the medium inside the furnace tubes is high. C. The furnace tubes are not installed properly. D. The pressure inside the furnace tubes is too high. 2. To ensure proper prevention of freezing and condensation, the amount of oil used for preheating the standby pump should be increased when the temperature is low. A. Reduce B. Increase C. No adjustment D. Uncertain 3. The cause of water hammer in equipment and pipelines is (　　). A. The pipeline installation is not secure. B. Steam contains water. C. Steam pressure is high. D. Steam temperature is high. 4. An excessively high oil-water interface level in the electrodialysis tank can lead to (　　). A. Water in the feed to the vacuum distillation tower; B. Water in the feed to the initial distillation tower; C. Oil in the wastewater from electrodialysis; D. Reduction in the salt content of crude oil. 5. Among the following options, (　　) will cause smoke to emanate from the chimney and an excessively high furnace temperature. A. Drop in fuel gas pressure B. Gas containing oil C. Steam containing water D. Fuel oil containing water The correct answers are A, B, B, B, B