Refining Knowledge (Technology) Daily Question (88) 12.22

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We welcome everyone to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s unified requirements, the maximum score for this event is 10 Wealth points, and rating charm is prohibited. Friendship requests and duplicate ratings are also declined. Please be cautious when posting; edits will not be effective! Those who have different opinions on the provided answer keys can post discussions the next day, and 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! To prevent some members from copying the answers of other members, please hide your posts when answering questions. For specific hiding methods, see: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 H9 Q8 x: O/ {9 e: F Note: Urgent call for contributors to provide a daily question on refining knowledge (technology). Thread address: http://bbs.hcbbs.com/thread-553526-1-1.html We look forward to active participation from those who are willing to answer the questions! I. Single-choice Questions 1. As the reaction time in catalytic cracking increases, which of the following changes is correct? ____ A. Increase in coke yield B. Decrease in gas yield C. Increase in diesel yield D. Increase in gasoline yield 2. Which of the following changes in the distillation system will not cause an increase in pressure? ______ A. The amount of cold reflux at the top of the tower decreases. B. The liquid level in the reprocessed oil tank is too high. C. The temperature after cooling at the top of the distillation tower increases. D. The liquid level at the bottom of the distillation tower is too high. 3. Which of the following configurations has the highest efficiency? ______: A. Inverted L-shaped B. T-shaped C. Umbrella-shaped D. Rough spiral 4. Which of the following is not an indicator of the main properties of packing? ( ) A. Equivalent theoretical plate height B. Porosity C. Void ratio D. Specific surface area 5. Metal passivators are most likely to be found in which of the following substances? ______: A. Gasoline B. Diesel C. Reprocessed oil D. Oil slurry. II. True or False questions. 6. For hydrocarbon molecules of the same type, the larger their molecular weight, the less likely they are to be adsorbed. （ ） 7. The regulatory effect of pure proportionality cannot eliminate residual errors, and the outcome of its action is necessarily conditional. ( ) 8. A large amount of oil to be absorbed or high temperatures can cause the dry gas in the reabsorption tower to contain oil. ( ) 9. The diameter of the regenerator is calculated based on the scale of the plant and the selected linear velocity of the bed material. ( ) 10. The mechanical strength of catalysts is related to their preparation process; high-alumina catalysts have better wear resistance than low-alumina catalysts, and fully synthetic catalysts possess greater mechanical strength than semi-synthetic catalysts. ( )