加氢裂化催化剂硫化结束气体露点的疑惑？ water is detrimental to fresh catalyst; if water contacts the catalyst, it will weaken and turn into powder in the reactor. therefore, before the initial catalyst charge is loaded or after the previous load of catalyst has been dumped the reactor walls and internals should be dried. if any moisture is evident on any internal reactor surface it should be dried with towels or with dry air. an air hose connected to dry breathing air should then be lowered in the reactors to displace any moist air and keep moist outside air from entering. for reactor purging “dry” air is defined as either oil-free air having an atmospheric pressure water dew point of -18°c or a relative humidity of 30% at catalyst loading temperature, whichever is the lower. (make sure purge air will not be replaced by nitrogen if purge air is lost.) 水对于新鲜催化剂来说是有害的。如果催化剂接触到水，它的强度就会变弱并在反应器中变成了粉末。因此，在最初装催化剂之前或卸完废剂后再装新剂时，反应器壁和内构件一定要干燥。在任一处催化剂的表面如果有湿气的话，必须用毛巾或干燥空气对其进行干燥处理。用一空气软管连接到干燥风源然后通入反应器中去置换反应器中的潮湿的空气并不允许外部潮湿的空气进入到反应器中。对于反应器吹扫来说，“干燥的”空气是指常压下其露点为-18℃的或在催化剂装填温度下相对湿度为30％的无油空气，哪一个标准都行（如果吹扫空气中断的话确定不要用氮气来替代吹扫空气）。 查看更多
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