One Question per Day on Synthetic Ammonia (Series 32)

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This post was last edited by 654262293 on 2016-3-6 at 10:49. 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 31, 156: The main function of the combustion chamber is to recover the heat of combustion of combustible gases such as ( ) present in the blast air. A、H2 B、N2 C、CO2 D、CO 157、When producing semi-water gas using the batch process, the furnace temperature is determined during the （ ） stage. A. Blowing air B. Downward blowing C. Upward blowing D. Air cleaning 158. When the ADA method is used for desulfurization, （ ） in the desulfurization solution plays a role in absorbing H2S gas. A. NaHCO3 B. Na2CO3 C. NaVO3 D. Na2V4O9 159. When solid fuel is gasified using water vapor as the gasifying agent, the gas produced is called （ ） gas. A. Air B. Water C. Mixed D. Semi-water 160. When producing semi-water gas by the batch method, the way to adjust (H2+CO)/N2 is by changing the amount of air containing N2 or by increasing or decreasing the time of ( ). A. Blowing air B. Cleaning with air C. Single upward blow D. Double upward blow Answer: D A B B B The scoring starts at 3 points, with 1 point added for each correct answer. It should be specifically noted that respondents are required to hide their answers. If the answerer’s score is not hidden, it is halved. For methods to hide posts, see: http://bbs.hcbbs.com/thread-1551107-1-1.html