固定床(chuang)反(fan)(fan)應器底部(bu)通(tong)常(chang)要(yao)設(she)置催(cui)化(hua)劑(ji)卸料(liao)口(kou)，在催(cui)化(hua)劑(ji)老化(hua)失活時將其(qi)卸出。反(fan)(fan)應器支(zhi)撐(cheng)(cheng)形(xing)式(shi)(shi)不同(tong)，催(cui)化(hua)劑(ji)卸料(liao)口(kou)設(she)計形(xing)式(shi)(shi)也不同(tong)。常(chang)見(jian)的(de)設(she)計形(xing)式(shi)(shi)主要(yao)有(you)三種(zhong)(zhong)，見(jian)圖6.9。對(dui)于(yu)圖6.9（a）所示(shi)形(xing)式(shi)(shi)卸料(liao)口(kou)，卸料(liao)過(guo)程(cheng)中(zhong)(zhong)，只需要(yao)將法蘭蓋打開(kai)，將塞子拔(ba)出，催(cui)化(hua)劑(ji)依靠重力從反(fan)(fan)應器中(zhong)(zhong)自(zi)流出來，操(cao)作簡單(dan)方便。對(dui)于(yu)圖6.9（b）所示(shi)形(xing)式(shi)(shi)卸料(liao)口(kou)，卸料(liao)過(guo)程(cheng)需要(yao)人(ren)工(gong)輔助(zhu)卸料(liao)。這兩種(zhong)(zhong)形(xing)式(shi)(shi)主要(yao)用(yong)(yong)于(yu)反(fan)(fan)應器采(cai)用(yong)(yong)裙座(zuo)作為支(zhi)撐(cheng)(cheng)結構(gou)。當反(fan)(fan)應器采(cai)用(yong)(yong)支(zhi)耳支(zhi)撐(cheng)(cheng)時，多采(cai)用(yong)(yong)圖6.9（c）所示(shi)形(xing)式(shi)(shi)設(she)計催(cui)化(hua)劑(ji)卸料(liao)口(kou)。

  無(wu)論反應器催化(hua)劑(ji)卸料口(kou)采用何種形式，均需要將卸料口(kou)布(bu)置在靠近催化(hua)劑(ji)裝卸區一(yi)側，卸料口(kou)高度應滿足規范要求(qiu)。