固(gu)定床反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)底部通常(chang)要設(she)置催(cui)(cui)(cui)化(hua)(hua)劑(ji)(ji)卸(xie)料(liao)(liao)口，在(zai)催(cui)(cui)(cui)化(hua)(hua)劑(ji)(ji)老化(hua)(hua)失活時將其(qi)卸(xie)出。反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)支(zhi)撐(cheng)形(xing)式(shi)不同，催(cui)(cui)(cui)化(hua)(hua)劑(ji)(ji)卸(xie)料(liao)(liao)口設(she)計形(xing)式(shi)也不同。常(chang)見的設(she)計形(xing)式(shi)主要有三(san)種，見圖6.9。對于圖6.9（a）所示形(xing)式(shi)卸(xie)料(liao)(liao)口，卸(xie)料(liao)(liao)過程中，只需要將法蘭(lan)蓋打開，將塞子拔出，催(cui)(cui)(cui)化(hua)(hua)劑(ji)(ji)依(yi)靠重力從(cong)反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)中自流出來，操作簡單方便。對于圖6.9（b）所示形(xing)式(shi)卸(xie)料(liao)(liao)口，卸(xie)料(liao)(liao)過程需要人工輔助卸(xie)料(liao)(liao)。這兩種形(xing)式(shi)主要用(yong)于反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)采(cai)用(yong)裙座作為支(zhi)撐(cheng)結構(gou)。當(dang)反(fan)(fan)(fan)應(ying)(ying)(ying)器(qi)采(cai)用(yong)支(zhi)耳(er)支(zhi)撐(cheng)時，多(duo)采(cai)用(yong)圖6.9（c）所示形(xing)式(shi)設(she)計催(cui)(cui)(cui)化(hua)(hua)劑(ji)(ji)卸(xie)料(liao)(liao)口。

  無論反應(ying)器(qi)催化劑(ji)卸料口(kou)采用何種(zhong)形式(shi)，均需(xu)要將(jiang)卸料口(kou)布置在(zai)靠近催化劑(ji)裝(zhuang)卸區(qu)一(yi)側，卸料口(kou)高度應(ying)滿足規(gui)范要求。