[Knowledge of Ammonia Synthesis] Daily Question (02) 2009.12.22
Thread Content
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 \"Question Bank for Vocational Training of Skilled Workers – Fertilizer Production Operators.\" An electronic version of this book is available for download in the soda ash information sharing area: http://bbs.hcbbs.com/thread-13140-1-2.html) True or False Questions: 1. Excessively high pressure of the fuel gas can lead to backfire. （ ） 2. Once carbon deposition is detected in a section of the furnace catalyst, the operation must be stopped. （ ） 3. Once sulfur poisoning is detected in a furnace catalyst, the operation must be stopped. （） 4. Operating a furnace in combination with a gas turbine can improve thermal efficiency. （ ） 5. The preheating coils in the convection section of a furnace are all finned tubes. ( )
1 x 2 v 3 v 4 v 5 x
This post was last edited by *aoye613 on 2009-12-22 19:01: Wrong, Right, Wrong, Right, Wrong
This post was last edited by *aoye613 on 2009-12-22 19:03: Wrong, Right, Right, Right, Wrong
This post was last edited by *aoye613 on 2009-12-22 19:04: Wrong, wrong, wrong; Right, right
This post was last edited by *aoye613 on 2009-12-22 19:04: 1. Right 2. Wrong 3. Wrong 4. Right 5. Right
This post was last edited by *aoye613 on 2009-12-22 19:10. The fuel gas pressure is too high, leading to easy backfire. (Incorrect) 2. Once carbon deposition is detected in a furnace catalyst, the operation must be stopped. (Incorrect) 3. Once sulfur poisoning is detected in a fixed-bed catalyst, the plant must be shut down. (Yes) 4. Operating a regenerative furnace in conjunction with a gas turbine can improve thermal efficiency. (Yes) 5. The preheating coils in the convection section of a furnace are all finned tubes. (Mistake)