Refining Knowledge (Technology) Daily Question (142) 2.25

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This post was last edited by Shuichangshou on 2010-2-25 08:33. 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. 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 answers can post discussions the next day, and those who provide solutions or their own views regarding the daily question 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 methods of concealment, see: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8. I. Multiple-choice questions: 1. When the wall temperature of oil refining equipment exceeds ( ) °C, any metal in a sulfur-containing environment will be subject to varying degrees of corrosion by hydrogen sulfide at high temperatures. A、200 B、250 C、300 D、350 2、When starting up a distillation unit, the key step in activating the atmospheric pressure side stream is ( ). A. Heating rate B. Temperature at the furnace outlet C. Stability of reflux D. Control of top temperature 3. An excessively high level of liquid in the drum can cause ( ). A. Air resistance B. Water hammer C. Pressure drop D. Pressure rise 4. When draining oil, controlling ( ) is key to ensuring material balance throughout the tower. A. Top of tower temperature B. Top of tower pressure C. Side stream temperature D. Bottom of tower liquid level 5. What is the function of the electrode plates in the electrodesalination tank? A. Both generate magnetic fields. B. Both generate uniform electric fields. C. Desalination. D. Dehydration. II. True or False: 6. If the water seal in the oil-water separation tank at the top of the distillation vacuum tower is damaged, it will lead to a decrease in the vacuum level at the top of the tower. （ ） 7. Water is carried back to the top of the tower, causing the temperature at the top to drop while the pressure rises. ( ) 8. During the pressure test of the cooler with steam, the water side should be drained. （ ） 9. The greater the mixing intensity of the oil-water mixer in the electrodialysis tank, the better. ( ) 10. The fuel oil control valve for the heating furnace should be a air-actuated shut-off valve. ( ) Answer key: BBBDB √√√××