Refining Knowledge (Technology) Daily Question (73) 12.7

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This post was last edited by Shuichangshou on 2009-12-9 at 15:13. Everyone is welcome to actively participate in the learning and discussion of professional basic knowledge in the refining technology exchange area! In accordance with the forum’s uniform requirements, the maximum score for this event is 10 Wealth points, and rating charm is prohibited. Friendships and duplicate ratings are also declined. Please be cautious when posting; edits will not be valid! 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 other members’ answers, 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: Daily questions on refining knowledge (technology) are being urgently sought; question creators can be found at: http://bbs.hcbbs.com/thread-553526-1-1.html We hope participants will take an active role in answering these questions! I. Multiple-choice questions: 1. When the reprocessing ratio increases, which of the following changes is correct? ____ A. Decreased conversion rate B. Increased two-stage reaction C. Decreased diesel cetane number D. Reduced heat required for the reaction 2. For a two-stage regeneration process, the temperature of the first stage of regeneration should be ____ the temperature of the second stage of regeneration. A. Higher than B. Lower than C. Equal to D. It depends 3. 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 reprocessing 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. 4. Under normal conditions, as the degree of reaction increases, the density of the oil slurry sent out for distillation will become ________. A. Large B. Decrease C. Unchanged 5. Changes in the recycle ratio of the reaction system will cause the following changes in the distillation system ______. A. Only affects changes in product distribution. B. Only affects the hydrogen-liquid phase load of the distillation column. C. Only affects the thermal balance of the distillation column. D. All of the above have an impact. II. True or False: 6. Changes in the liquid level in the re-refining tank are influenced only by the degree of reaction. （ ） 7. An increased catalyst reserve can boost coking speed and reduce the carbon content in regenerated catalysts. ( ) 8. The size of the recycle ratio is influenced only by the degree of reaction. ( ) 9. A large amount of oil in the absorbent oil or high temperatures can cause the dry gas in the reabsorption tower to contain oil. ( ) 10. Increasing the reaction pressure will increase the work required by the compressor. ( ) Reference answer: ABAAD ×××√×