One Question per Day on Synthetic Ammonia (Series 37)

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This post was last edited by penghh1985 on 2016-3-12 09:00. I. Multiple-choice questions (each question has 4 options, of which only 1 is correct; fill in the correct option in the brackets). Continuing from Series 36: 181. After a catalyst ages, it will cause ( ). A. Activity gradually increases, and production capacity gradually increases as well. B. Activity gradually increases, but production capacity gradually decreases. C. Activity gradually decreases, and production capacity also gradually decreases. D. Activity gradually decreases, but production capacity gradually increases. 182. Industrially, ( ) is commonly used to bring the temperature of the conversion reaction close to its optimal value. A. Continuous heat release B. Continuous heat absorption C. Heat release between sections D. Heat absorption between sections 183. During decarburization using the NHD method, what is the main component of the high-flash gas? A. H2S and H2 B. H2O(g) and N2 C. CO and H2 D. H2 and N2 184. The volume ratio of (H2+CO) to N2 in semi-water gas is ( ). A. 1 B. 2 C. 3.1~3.2 D. 4 185. In the NHD method for carbon removal, what is the method used for regenerating the decarburization liquid? A. Pressure reduction and stripping B. Pressure reduction and heating C. Stripping and heating D. None of the above Answer: C C D C A. The scoring starts at 3 points, with 1 point added for each correct answer.