One Question per Day on Synthetic Ammonia (Series 42)
Thread Content
This post was last edited by 654262293 on 2016-3-15 11:06. 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 41, 206: The separation of ammonia using the condensation method relies on the principle that ammonia gas easily liquefies under ( ). A. High temperature and high pressure B. Low temperature and high pressure C. Low temperature and low pressure D. High temperature and low pressure 207. Using pressurized conversion can increase ( ), thereby enhancing the production capacity of catalysts. A. Temperature B. Conversion rate C. Reaction speed D. Water vapor content 208. In the CO pressure conversion process, the purpose of adding condensed water between the conversion furnace sections is to obtain some steam and ( ). A. Raise the temperature B. Lower the temperature C. Increase pressure D. Decrease pressure 209. When using solid catalysts, it is essential to prevent poisoning; the type of poisoning for which the catalyst’s activity cannot be restored is ( ). A. Permanent poisoning B. Temporary poisoning C. Carbon deposition D. Passivation 201. For medium-temperature CO conversion catalysts that become poisoned by H2S, which of the following methods can be used for regeneration? A. Air treatment B. Treatment with acid or alkali solutions C. Steam treatment D. Introduction of reducing gases Answer: BCBAC. The scoring scale starts at 3 points; 1 point is added for each correct answer, and an additional 1 point is given for a completely correct response.
206. The separation of ammonia by condensation method utilizes the principle that ammonia gas easily liquefies under (B) conditions. A. High temperature and high pressure B. Low temperature and high pressure C. Low temperature and low pressure D. High temperature and low pressure 207. Using pressurized conversion can increase (C), thereby enhancing the catalyst’s production capacity. A. Temperature B. Conversion rate C. Reaction speed D. Water vapor content. 208. In the CO pressure conversion process, the purpose of adding condensed water between the conversion furnace sections is to obtain some steam and (B). A. Raise the temperature B. Lower the temperature C. Increase pressure D. Decrease pressure. 209. When using solid catalysts, it is essential to prevent poisoning; the type of poisoning for which the catalyst’s activity cannot be restored is (A). A. Permanent poisoning B. Temporary poisoning C. Carbon deposition D. Passivation 201. For medium-temperature CO conversion catalysts that become poisoned by H2S, which of the following methods can be used for regeneration? (C) A. Air treatment B. Treatment with acid or alkali solutions C. Steam treatment D. Introduction of reducing gases
206. The separation of ammonia by condensation method relies on the principle that ammonia gas easily liquefies under (B) conditions. A. High temperature and high pressure B. Low temperature and high pressure C. Low temperature and low pressure D. High temperature and low pressure 207. Using pressurized conversion can increase (C), thereby enhancing the catalyst’s production capacity. A. Temperature B. Conversion rate C. Reaction speed D. Water vapor content. 208. In the CO pressure conversion process, the purpose of adding condensed water between the conversion furnace sections is to obtain some steam and (B). A. Raise the temperature B. Lower the temperature C. Increase pressure D. Decrease pressure. 209. When using solid catalysts, it is essential to prevent poisoning; the type of poisoning for which the catalyst’s activity cannot be restored is (A). A. Permanent poisoning B. Temporary poisoning C. Carbon deposition D. Passivation 201. For medium-temperature CO conversion catalysts that become poisoned by H2S, which of the following methods can be used for regeneration? (C) A. Air treatment B. Treatment with acid or alkali solutions C. Steam treatment D. Introduction of reducing gases
206. The separation of ammonia by condensation relies on the principle that ammonia gas easily liquefies under (B, low temperature and high pressure). A. High temperature and high pressure B. Low temperature and high pressure C. Low temperature and low pressure D. High temperature and low pressure 207. Using pressurized conversion can increase (C. the reaction rate), thereby enhancing the productivity of catalysts. A. Temperature B. Conversion rate C. Reaction speed D. Water vapor content 208. In the CO pressure conversion process, the purpose of adding condensed water between the conversion furnace sections is to obtain some steam and (B. Cool down). A. Heat up B. Cool down C. Increase pressure D. Decrease pressure 209. When using solid catalysts, it is essential to prevent poisoning; the type of poisoning for which the catalyst’s activity cannot be restored is (A. Permanent poisoning). A. Permanent poisoning B. Temporary poisoning C. Carbon deposition D. Passivation 201. For medium-temperature CO conversion catalysts that become poisoned by H2S, which of the following methods can be used for regeneration? (C. Steam treatment) A. Air treatment B. Treatment with acid or alkali solutions C. Steam treatment D. Introduction of reducing gases