One Question per Day on Synthetic Ammonia (Series 19)

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This post was last edited by penghh1985 on 2016-2-22 08:16. Multiple-choice question (fill in the correct option in the brackets). Continuing from series 1891: 91. (B-A-008) The initial reduction temperature of the B204 catalyst at an inlet H2 concentration of 1% is ( )°C. (A) 120 (B) 130 (C) 140 (D) 150 92. (B-A-009) The characteristic of the rapid heating and reduction method for ammonia synthesis catalysts is the full utilization of the heat generated by the synthesis reaction to accelerate the reaction ( ). (A) Temperature (B) Velocity (C) Pressure (D) Equilibrium 93. (B-A-009) For synthesis towers with a diameter of φ1,000 or more, synthesis catalysts with a size of ( ) mm are generally used. (A) 1.5～4.7 (B) 4.7～6.3 (C) 9.4～13 (D) 6.3～9.4 94. (B-A-009) The catalyst particle size generally suitable for radial and axial-radial combined reactors is ( ). (A) 1.5～3.0 (B) 3.0～4.5 (C) 4.5～6.0 (D) 6.0～7.5 95. (B-A-010) The reduction of ammonia synthesis catalysts in industry can be divided into ( ) phases. (A) 4 (B) 3 (C) 5 (D) 2 DBCAC Scoring criteria: 3 points for participation, 8 points for a completely correct answer.