本文選題：濕法脫硫　切入點(diǎn)：液柱蒸發(fā)　出處：《化工進(jìn)展》2017年07期 　論文類型：期刊論文

【摘要】：提出了一種利用煙氣余熱基于液柱蒸發(fā)濃縮脫硫廢水的新型工藝,旨在降低脫硫廢水零排放的成本。利用液柱蒸發(fā)試驗(yàn)臺(tái),研究了不同工藝參數(shù)下脫硫廢水的液柱蒸發(fā)特性,得到了出口煙氣濕飽和的邊界條件。研究結(jié)果表明:在試驗(yàn)參數(shù)范圍內(nèi),煙氣裹挾速率、蒸發(fā)速率、壓力損失范圍分別為1.5~53.17kg/h、8.85~45.73kg/h、9~160Pa,出口煙氣濕度、出口煙氣溫度、SO2去除率范圍分別為28.6%rh~99.6%rh、42.5~65.7℃、4.1%~61.0%。出口煙氣中鹽離子濃度的增加為煙氣裹挾廢水所致,蒸發(fā)過程中鹽類不會(huì)遷移到煙氣中。噴嘴直徑為2.5mm時(shí),出口煙氣均呈濕飽和態(tài);噴嘴直徑為5mm時(shí),蒸發(fā)塔內(nèi)煙氣流速大于5.0m/s時(shí),出口煙氣呈濕飽和態(tài);噴嘴直徑為10.6mm時(shí),出口煙氣均呈不飽和態(tài)。本實(shí)驗(yàn)的實(shí)施對(duì)于電廠的余熱利用和廢水零排放項(xiàng)目提供了參考和借鑒意義。
[Abstract]:A new technology for concentrating desulfurization wastewater based on liquid column evaporation is proposed in this paper, which aims at reducing the cost of zero discharge of desulphurization wastewater. The characteristics of liquid column evaporation of desulphurization wastewater under different process parameters are studied by using liquid column evaporation test rig. The boundary conditions for wet saturation of outlet flue gas are obtained. The results show that the range of flue gas inclusion rate, evaporation rate and pressure loss are 1.5 ~ 53.17 kg / h 8.85 kg / h ~ 45.73 kg / h ~ 9 ~ 160 Pa in the range of test parameters, respectively. The removal rate of so _ 2 in outlet flue gas is 28.60.99. 6RH ~ 42.5 ~ 65.7 鈩，

本文編號(hào)：1592870