固定(ding)床反(fan)(fan)應(ying)(ying)器底部通常(chang)要(yao)(yao)(yao)設(she)置催(cui)(cui)化(hua)(hua)劑(ji)卸(xie)料(liao)(liao)(liao)口(kou)，在催(cui)(cui)化(hua)(hua)劑(ji)老化(hua)(hua)失活(huo)時將其卸(xie)出(chu)。反(fan)(fan)應(ying)(ying)器支撐形(xing)(xing)式(shi)不(bu)同(tong)，催(cui)(cui)化(hua)(hua)劑(ji)卸(xie)料(liao)(liao)(liao)口(kou)設(she)計形(xing)(xing)式(shi)也(ye)不(bu)同(tong)。常(chang)見的(de)設(she)計形(xing)(xing)式(shi)主(zhu)要(yao)(yao)(yao)有三種(zhong)(zhong)，見圖6.9。對于圖6.9（a）所示(shi)(shi)形(xing)(xing)式(shi)卸(xie)料(liao)(liao)(liao)口(kou)，卸(xie)料(liao)(liao)(liao)過(guo)程(cheng)中(zhong)，只需要(yao)(yao)(yao)將法蘭(lan)蓋打開，將塞子拔出(chu)，催(cui)(cui)化(hua)(hua)劑(ji)依靠重力(li)從反(fan)(fan)應(ying)(ying)器中(zhong)自流出(chu)來(lai)，操作(zuo)簡單方便。對于圖6.9（b）所示(shi)(shi)形(xing)(xing)式(shi)卸(xie)料(liao)(liao)(liao)口(kou)，卸(xie)料(liao)(liao)(liao)過(guo)程(cheng)需要(yao)(yao)(yao)人工輔助卸(xie)料(liao)(liao)(liao)。這(zhe)兩種(zhong)(zhong)形(xing)(xing)式(shi)主(zhu)要(yao)(yao)(yao)用(yong)于反(fan)(fan)應(ying)(ying)器采(cai)(cai)用(yong)裙(qun)座作(zuo)為支撐結構。當反(fan)(fan)應(ying)(ying)器采(cai)(cai)用(yong)支耳支撐時，多采(cai)(cai)用(yong)圖6.9（c）所示(shi)(shi)形(xing)(xing)式(shi)設(she)計催(cui)(cui)化(hua)(hua)劑(ji)卸(xie)料(liao)(liao)(liao)口(kou)。

  無(wu)論反應器(qi)催化(hua)劑(ji)卸料(liao)(liao)口采(cai)用何種形式，均(jun)需要(yao)(yao)將卸料(liao)(liao)口布置(zhi)在靠近(jin)催化(hua)劑(ji)裝卸區一側(ce)，卸料(liao)(liao)口高度應滿足規范要(yao)(yao)求(qiu)。