【正文】 = KJ/h式中 ——60℃時水的比熱 KJ/(Kg則煤氣帶入飽和器的總熱量為= ＋ ＋=＋＋ ＋= ＋氨汽帶入的熱量 氨汽帶入的熱量由氨帶入的熱量和水汽帶入的熱量兩部分組成。K)c) 氨帶入的熱量 ===式中 ——氨帶入的熱量 KJ/h 2．11——氨的比熱 KJ/(Kg洗滌硫氨用水占硫氨質(zhì)量總重的6%，沖洗飽和器和除酸器帶入的水量平均取100kg/h，氨分縮器后氨汽濃度為10%. 飽和器水平衡如下：Error! No bookmark name given.Error! No bookmark name ! No bookmark name given.Error! No bookmark name ! No bookmark name ! No bookmark name given.Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name given.Error! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name ! No bookmark name given. 飽 和 器Error! 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 Error! 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 ! 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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均由煤氣帶走,則由飽和器出去的1Nm煤氣應帶走水量為 kg/ Nm 相應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》(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為: PL=KPg 式中 K——平衡偏離系數(shù)(～)當K=,PL== ㎜H2O 由圖93《化工工藝學》(礦大版) 知: 當酸度為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 ! 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