[Knowledge of Ammonia Synthesis] Daily Question (94) 04/06/2010
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When replying to a post, please hide the answers; responses without hiding them will not be graded in principle. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Multiple-choice question: 1. In the Brown process, what is the typical pressure level used for blasting and purging the cold box? A Below 0.1 Mpa B 0.2~0.3 Mpa C 0.4~0.5 Mpa 2. In the Brown process, the temperature of the process gas at the inlet of the molecular sieve dryer should be controlled at （ ） A 3~5℃ B Below 2℃ C 5~7℃ 3. When V2O5 is added to the decarburization system as a corrosion inhibitor, only （ ） can form a passivation film. A V5+ B V4+ C V2+ Reference answers: available after replying: 1、B 2、A 3、A
1.B 2.A 3.A
Answer: 1, B； 2, C3, A. 1# *aoye613
1、B 2、A 3、A 1# *aoye613
BAA 1# *aoye613
BAA 1# *aoye613
1. In the Brown process, the cold box is purged by blasting, with the pressure generally controlled at (B). A Below 0.1 Mpa B 0.2~0.3 Mpa C 0.4~0.5 Mpa 2. In the Brown process, the temperature of the process gas at the inlet of the molecular sieve dryer should be controlled at ( A ) A 3~5℃ B Below 2℃ C 5~7℃ 3. When V2O5 is added to the decarburization system as a corrosion inhibitor, only ( A ) can form a passivation film. A V5+ B V4+ C V2+
The last edit to this post was made by *aoye613 on 2010-4-6 at 08:32. 1. In the Brown process, when blasting and purging the cold box is carried out, the pressure is generally controlled at ( ). Below 0.1 Mpa: 1. In the Brown process, the cold box is purged by blasting, with the pressure generally controlled at (B). A Below 0.1 Mpa B 0.2~0.3 Mpa C 0.4~0.5 Mpa 2. In the Brown process, the temperature of the process gas at the inlet of the molecular sieve dryer should be controlled at (B) A 3~5℃ B Below 2℃ C 5~7℃ 3. When V2O5 is added to the decarburization system as a corrosion inhibitor, only (A) can form a passivation film. A V5+ B V4+ C V2+