Friday, September 16, 2022
问题:在加氢装置停工期间,降温速度过快,反应器将发生()损伤。A、回火脆化B、奥氏体不锈钢堆焊层剥落C、连多硫酸腐蚀D、H2S氢导致开裂腐蚀...
Thursday, June 27, 2024
Friday, September 16, 2022
Friday, September 16, 2022
问题:热继电器是利用电流的热效应原理来工作的保护电器,它在电路中主要用...
Friday, September 16, 2022
问题:电动机长动与点动控制区别的关键环节是()触头是否接入。...
Sunday, September 11, 2022
问题:过量的雾沫夹带造成液相在塔板间的返混,塔板效率下降。...
Friday, September 16, 2022
问题:裂解汽油加氢装置循环氢压缩机复位时,必须先使()。...
Sunday, September 11, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
问题:火焰燃烧不完全,火焰发飘、软而无力,火焰根部是深黑色甚至冒黑烟的...
Friday, September 16, 2022
Monday, September 12, 2022
问题:高处作业人员在作业前应充分了解作业内容、地点(位号)、时间、要求...
Monday, September 12, 2022
问题:当油罐由于付油或油温下降,罐内油气压力降低到油罐设计真空度时,(...
Sunday, September 11, 2022
问题:为进一步保证保护接零的安全系数,通常在保护接零的零线上,安装保险...
Friday, September 16, 2022
Friday, September 16, 2022
问题:油品在实验条件下,因为开始出现烃类的微晶粒或冰晶体而使油品呈现混...
Friday, September 16, 2022
问题:对于加氢装置未再生催化剂,下述操作正确的有()。...
Friday, September 16, 2022
Sunday, September 11, 2022
问题:裂解汽油加氢装置脱戊烷塔回流罐液体易挥发不宜装桶。...
Sunday, September 11, 2022