【Test Your Knowledge】Basic Chemical Engineering Knowledge (209) Please hide your replies

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This post was last edited by zhangyong6404 on 2009-10-14 at 23:15. In accordance with the forum’s uniform requirements, the maximum score for this activity is 15 Wealth points; giving scores based on charm is prohibited. At the same time, friendship requests and duplicate ratings are declined. To encourage active participation from members, full marks are given for all correct answers, while 10–12 wealth points are deducted for each incorrect answer. 2 mistakes result in 8–10 wealth points; the rest receive encouragement bonuses of 4–6 wealth points. 1. The liquid density is related to the shaft power N, which is one of the characteristic parameters of centrifugal pumps. 2. An increase in temperature and a decrease in pressure are favorable for desorption. 3. The distillation process can be classified according to the distillation method into simple distillation, equilibrium distillation, rectification, and special rectification. 4. The so-called dew point refers to the temperature at which air with unsaturation, etc., is cooled to a saturated state. 5. When the air temperature is t and the humidity is H, a water content of zero in the dried product represents the limit of drying. 6. There are five possible heat conditions for feed; when q=0, it is bubble-point feeding. 7. It refers to the phenomenon in centrifugal compressors where, when the load is reduced to a certain level, strong oscillations occur in the gas flow, resulting in severe vibrations of the compressor body; this phenomenon is known as throttling. 8. In the packed tower experiment, the carbon dioxide absorption process is controlled by the liquid film mechanism. 9. When the Reynolds number Re is ≥ 4000, the flow is definitely laminar. 10. The rotameter is a flow meter with a constant pressure difference and a variable cross-section. Answer: Right Wrong Right Right Wrong, Wrong Wrong Right Wrong Wrong. No scoring is given if the principles are not followed. Thank you all! To hide the method, click here: Hide method. Answers using the same IP are valid only for the first post. Also, be careful when posting – edits are invalid! To encourage independent thinking, those who answer all questions correctly are invited to go to the dedicated reward post on [Test Your Knowledge] to claim their prizes (click the link)!