1.采用“吸收-解吸”的方法有效地分離氯化氫和空氣。文獻報道氯化氫與空氣的分離可采用冷凍液化的方法。本工藝以稀鹽酸（質量分數為20）為吸收介質在相對較低的溫度（25C左右）吸收氯化氫氣體，再在相對較高的溫度下解吸出吸收的氯化氫，稀鹽酸循環用于“吸收-解吸”氯化氫，使氯化氫與空氣有效分離。與冷凍液化分離的方法相比，投資少、能耗低。 

    2.采用濃鹽(yan)酸(suan)(suan)(suan)洗(xi)(xi)(xi)滌(di)氯(lv)(lv)(lv)化(hua)(hua)(hua)氫，有(you)(you)效除(chu)去(qu)氯(lv)(lv)(lv)化(hua)(hua)(hua)氫氣體(ti)中(zhong)(zhong)(zhong)氯(lv)(lv)(lv)化(hua)(hua)(hua)鉀(jia)粉塵和(he)(he)硫(liu)酸(suan)(suan)(suan)雜(za)(za)質(zhi)。文獻報道可(ke)(ke)用濃硫(liu)酸(suan)(suan)(suan)洗(xi)(xi)(xi)滌(di)除(chu)去(qu)氯(lv)(lv)(lv)化(hua)(hua)(hua)氫氣體(ti)中(zhong)(zhong)(zhong)的硫(liu)酸(suan)(suan)(suan)和(he)(he)氯(lv)(lv)(lv)化(hua)(hua)(hua)鉀(jia)雜(za)(za)質(zhi)，洗(xi)(xi)(xi)滌(di)后氯(lv)(lv)(lv)化(hua)(hua)(hua)氫氣體(ti)中(zhong)(zhong)(zhong)的硫(liu)酸(suan)(suan)(suan)和(he)(he)氯(lv)(lv)(lv)化(hua)(hua)(hua)鉀(jia)含(han)量(liang)可(ke)(ke)分別達到(dao)0.5~0.1mg/Nm3和(he)(he)0.05~0.02mg/Nm3。為(wei)盡可(ke)(ke)能完全除(chu)去(qu)氯(lv)(lv)(lv)化(hua)(hua)(hua)氫氣體(ti)中(zhong)(zhong)(zhong)的硫(liu)酸(suan)(suan)(suan)和(he)(he)氯(lv)(lv)(lv)化(hua)(hua)(hua)鉀(jia)等(deng)非揮(hui)發(fa)性雜(za)(za)質(zhi),以(yi)避(bi)免其在后面的“吸收-解(jie)吸”循(xun)環過程中(zhong)(zhong)(zhong)累積(ji),本工藝以(yi)鹽(yan)酸(suan)(suan)(suan)作洗(xi)(xi)(xi)滌(di)介質(zhi),用一個(ge)冷(leng)卻(que)洗(xi)(xi)(xi)滌(di)器和(he)(he)3個(ge)填(tian)料塔對氯(lv)(lv)(lv)化(hua)(hua)(hua)氫氣體(ti)進行“三級梯度”洗(xi)(xi)(xi)滌(di)。洗(xi)(xi)(xi)滌(di)后氣體(ti)中(zhong)(zhong)(zhong)氯(lv)(lv)(lv)化(hua)(hua)(hua)鉀(jia)含(han)量(liang)降低到(dao)0.002mg/Nm3以(yi)下(原子(zi)吸收分光(guang)光(guang)度法),有(you)(you)效解(jie)決了非揮(hui)發(fa)性雜(za)(za)質(zhi)在“吸收-解(jie)吸“過程中(zhong)(zhong)(zhong)的積(ji)累。洗(xi)(xi)(xi)滌(di)塔排出(chu)(chu)含(han)硫(liu)酸(suan)(suan)(suan)10%(質(zhi)量(liang)分數(shu))的混(hun)酸(suan)(suan)(suan)作為(wei)商品出(chu)(chu)售(shou)。

    3.采用降(jiang)膜吸(xi)(xi)(xi)(xi)收(shou)及(ji)尾氣(qi)洗滌技術,使尾氣(qi)排(pai)放(fang)(fang)符合國家(jia)標準。氯化氫的吸(xi)(xi)(xi)(xi)收(shou)采用二(er)次降(jiang)膜吸(xi)(xi)(xi)(xi)收(shou),有(you)效地移出氯化氫吸(xi)(xi)(xi)(xi)收(shou)過程中放(fang)(fang)出的反應(ying)熱并使吸(xi)(xi)(xi)(xi)收(shou)完全(quan)。用3個填(tian)料塔,以水為(wei)介質(zhi)對尾氣(qi)進行“三級梯度”回收(shou)洗滌,使排(pai)放(fang)(fang)尾氣(qi)中氯化氫含量(liang)達到20mg/Nm3,排(pai)放(fang)(fang)量(liang)0.0064kg/h遠低于國家(jia)排(pai)放(fang)(fang)標準。 

    4.采用冷(leng)凍和酸霧(wu)捕集(ji)(ji)技術,使精(jing)制后(hou)氯(lv)化氫含水質(zhi)量分數(shu)<0.05%。解(jie)析出的(de)氯(lv)化氫氣體經(jing)循環水冷(leng)卻(que)、-15℃鹽水冷(leng)卻(que),控制溫度<5℃經(jing)酸霧(wu)捕集(ji)(ji)器(qi)過濾除去酸霧(wu),含水<0.05%(質(zhi)量分數(shu))。 

    5.精制后氯化氫產品技術指標為:ω(HCl)>99.9%,ω（O2）<0.001%,ω(CO2<0.001%,ω(N2)<0.001%,ω(H2O)<0.05%,沒有游離氯(lv)和(he)H2。