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No bookmark name ! No bookmark name ! No bookmark name 輸入方 輸出方煤氣帶入水量 = 360 = kg/h氨汽帶入水量 由N2-N4=(W2+N2- N4)10% 得 kg/h硫酸帶入水 =(198%)= kg/h洗滌硫銨用水量(扣除硫銨產(chǎn)品帶出水量)W4=6%= kg/h沖洗水量 Ws=100 kg/h則帶入飽和器總水量 Wt=W1+W2+W3+W4+WS =2339 kg/h 以上求得帶入飽和器的總水量應(yīng)均由煤氣帶走,則由飽和器出去的1Nm煤氣應(yīng)帶走水量為 kg/ Nm 相應(yīng)1 Nm煤氣中水汽體積為 Nm 故混合氣體中水汽所占體積百分比為 % MPa ,其絕對壓力為 MPa. 則 水蒸汽分壓為 %= 6MPa 飽和器內(nèi)母液適宜溫度可按最低溫度乘以偏離系數(shù)來確定,當(dāng)母液液面上水汽分壓PL與母液液面煤氣中水汽分壓Pg相平衡時, 即 PL=Pg= ㎜H2O 取母液酸度為6%參考《化工工藝學(xué)》(礦大版)查圖可得: 飽和器母液溫度最底41℃,因為母液內(nèi)水的蒸發(fā)還需要推動力(△P=PLPg),還由于煤氣在飽和器中停留時間短,蒸汽兩相水汽分壓不可能得到平衡,所以實際上母液液面上的水蒸氣分壓應(yīng)為: PL=KPg 式中 K——平衡偏離系數(shù)(~)當(dāng)K=,PL== ㎜H2O 由圖93《化工工藝學(xué)》(礦大版) 知: 當(dāng)酸度為8%時,適宜操作溫度52℃,實際生產(chǎn)中母液溫度一般在50~55℃. 本設(shè)計未考慮對吡啶的回收. 為確定是否需要向飽和器補充熱量和煤氣的預(yù)熱溫度須對飽和器進行熱平衡計算. 飽和器熱平衡如下圖輸入方 輸出方Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name 和 器Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! 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