当转化催化剂发生结碳现象时,下列哪种做法对烧炭不利()A、增大水碳比B、配入一定还原气C、降低负荷D、增加负荷...
Monday, January 8, 2024
Friday, September 16, 2022
加氢催化剂装填时,进入反应器内作业的人员,应带上防爆灯、外供风作...
Saturday, September 10, 2022
Saturday, September 10, 2022
Saturday, September 10, 2022
转化催化剂发生重度结炭,从化学平衡和安全角度考虑可以使用()方法...
Saturday, September 10, 2022
企业依据实际情况,对计量器具(含标准器)划分为()实施管理。...
Saturday, September 10, 2022
Friday, September 16, 2022
Friday, September 16, 2022
PSA系统液压油温度是通过()调节的A、液压系统用油量B、液压系统的压力C、进入油冷却器的油量D、进入油冷却器的冷却水量...
Friday, October 27, 2023
Friday, September 16, 2022
对使用氧化型转化催化剂而言,转化炉配氢配汽可以起到()的作用...
Friday, September 16, 2022
Saturday, September 10, 2022
转化炉在日常生产中,水碳比大幅波动会导致()。A、转化率不稳定B、转化率下降C、炉温上升D、炉温下降...
Tuesday, May 23, 2023
Saturday, September 10, 2022
Friday, September 16, 2022
机泵冷却水不畅通时,应()A、降低冷却水入口压力B、降低机泵负荷C、开大冷却水阀D、降低冷却水的压差...
Thursday, July 6, 2023
Friday, September 16, 2022
Friday, September 16, 2022
Saturday, September 10, 2022