(10分)利用天然气合成氨的工艺流程示意图如下:依据上述流程,

(10分)利用天然气合成氨的工艺流程示意图如下:

依据上述流程,完成下列填空:

(1)天然气脱硫时的化学方程式是                                         

(2)图中CH4的第一次转化过程中的化学方程式是                           

(3)整个流程有三处循环,一是K2CO3(aq)循环,二是N2和H2循环,三是        (填化学式)循环。

(4)K2CO3(aq)和CO2反应在加压下进行,加压的理论依据是      (多选扣分)。

a.熵增原理           b.勒夏特列原理            c.酸碱中和原理

 

答案

(1)3H2S+2Fe(OH)3=== Fe2S3+6H2O   (3分)

(2)CH4+H2OCO+3H2   (3分)

(3)Fe(OH)3(2分)

(4)b(2分)

解析:略

 

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