问题 问答题 简答题

稳定塔顶不凝气增加,原因有哪些?(KHD:安全与环保知识)

答案

参考答案:

(1)重整反应苛刻度提高,如提高温度,降低压力、降低空速等。;

(2)重整催化剂中毒;

(3)反应系统氯含量增加;

(4)反应条件不变时,原料芳潜变低了;

(5)塔顶冷却器冷却效果变差。

材料题

阅读下 * * 幅图,回答有问题:

(注图三:2001提7月在德国波恩大会新闻中心附近摆放了一个3.5吨的地球冰雕。这个冰雕将逐渐融化,它像征着正在变暧的全球气候。) 

(1)图一和图二分别是哪两种交通工具?这两种交通工具的发明者是谁?

                                                                                                                                                              

(2)这两种交通工具分别以什么为动力?它们的发明有什么重要意义?

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                             

(3)图一、图二与图三反映的现象有什么联系?为此,我们生活中应养成什么良好的习惯?

                                                                                                                                                             

                                                                                                                                                             

单项选择题