[Ammonia Synthesis Knowledge] Daily Question (06) 2009.12.26
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The maximum score for this activity is 10 Wealth; please, moderators, do not assign scores above this limit. When replying to a post, hide the answers – scores will not be given if the answers are not hidden. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Posts that have been edited are not rated. (All questions are taken from the \"Question Bank for Vocational Workers’ Training – Fertilizer Production Operators.\" An electronic version of this book is available for download in the soda ash information sharing area at http://bbs.hcbbs.com/thread-13140-1-2.html) 1. In the Brown process, the process condensate is discharged without undergoing stripping treatment. （ ） 2. After replacing the high-pressure steam preheating coil, it must be purged with steam. （ ） 3. In a fire-tube waste heat boiler, the tube sheet on the high-temperature side is more prone to damage than that on the low-temperature side. （ ） 4. Once a leak in the waste heat boiler is detected, the plant must be shut down for maintenance. （ ） 5. In the Brown process, during normal operation, the combustion air in the first furnace is cold air. ( )
In the Brown process, the process condensate is discharged without being stripped. (Yes) 2. After replacing the high-pressure steam preheating coil, it must be purged with steam. (Yes) 3. In a fire-tube waste heat boiler, the tube sheet on the high-temperature side is more prone to damage than that on the low-temperature side. (Yes) 4. Once a leak in the waste heat boiler is detected, the plant must be shut down for maintenance. (Incorrect) 5. In the Brown process, during normal operation, the combustion air in the first furnace is cold air. (True)
1. Wrong 2. Right 3. Right 4. Right 5. Wrong
1. In the Brown process, the process condensate is discharged without being stripped. (Incorrect) 2. After replacing the high-pressure steam preheating coil, it must be purged with steam. (Yes) 3. In a fire-tube waste heat boiler, the tube sheet on the high-temperature side is more prone to damage than that on the low-temperature side. (Yes) 4. Once a leak in the waste heat boiler is detected, the plant must be shut down for maintenance. (Incorrect) 5. In the Brown process, during normal operation, the combustion air in the first furnace is cold air. (Mistake)
1. In the Brown process, the process condensate is discharged without being stripped. (Incorrect) 2. After replacing the high-pressure steam preheating coil, it must be purged with steam. (Yes) 3. In a fire-tube waste heat boiler, the tube sheet on the high-temperature side is more prone to damage than that on the low-temperature side. (Incorrect) 4. Once a leak in the waste heat boiler is detected, the plant must be shut down for maintenance. (Yes) 5. In the Brown process, during normal operation, the combustion air in the first furnace is cold air. (Mistake)