Sunday, September 11, 2022
燃料气带油,会导致炉膛温度上升,炉管局部过热,易造成炉管结焦,因...
Friday, September 16, 2022
系统引原料时,要注意化验原料里的()含量,以防催化剂中毒。...
Monday, September 12, 2022
急冷氢控制阀失灵时,床层温控改手动控制,控制阀切换为手动调节,联...
Monday, September 12, 2022
Monday, September 12, 2022
油环自润滑,加油时,应保证油位高度在油标高度的1/3~2/3之间...
Monday, September 12, 2022
Saturday, October 22, 2022
Friday, September 16, 2022
发现高压法兰泄漏,下列操作不正确的是()。A、立即报告内操和班长B、如果泄露量大,立即启动紧急泄压C、提高反应温度D、对泄漏点隔离,并用蒸汽或氮气稀释...
Wednesday, November 8, 2023
Monday, September 12, 2022
Monday, September 12, 2022
管线停工吹扫的标准不包括()。A、吹扫时,工业风和氮气可以互串B、管线有支路时,要求先并联,再分支,后并联,直到吹扫合格C、先副线后正线,最后同时吹扫D、吹扫中不能漏线...
Monday, June 26, 2023
Monday, September 12, 2022
Sunday, September 11, 2022
Monday, September 12, 2022
Monday, September 12, 2022
Monday, September 12, 2022
减压进料加热炉炉膛温度热偶安装位置在()。A、炉膛上部B、炉膛顶部C、炉膛底部D、炉膛侧部...
Saturday, May 20, 2023
Monday, April 10, 2023
Sunday, September 11, 2022