采用智能重量吸附仪测量了不同温度、压力下二氯甲烷(CH2Cl2)在离子液体1-丁基-3-甲基咪唑六氟磷酸盐([Bmim][PF6])中的溶解度，用NRTL方程建立了离子液体?二氯甲烷体系的气液平衡模型，拟合得到二元交互作用参数，计算所得的二氯甲烷溶解度与实验数据吻合良好，平均相对误差为3.16%. 构建了离子液体处理含二氯甲烷尾气及资源回收利用的常压吸收?减压闪蒸解吸工艺和模型，模型适用范围为温度278.15~308.15 K，压力0~0.1 MPa. 对吸收塔进行了模拟和灵敏度分析，获得了常温常压吸收条件下的最佳操作工艺参数.
The solubility of dichloromethane (CH2Cl2) in ionic liquid (IL) 1-butyl-3-methylimidazolium hexafluorophosphate ([Bmim][PF6]) at different temperatures and pressures was measured by intelligent gravimetric adsorption instrument. The NRTL equation was applied to describe the vapor?liquid equilibrium of IL?CH2Cl2 system and the thermodynamic interaction parameters were regressed with experimental data. The calculated properties agreed well with experimental data, and the average relative deviation was 3.16%. Based on the results, the absorption and recovery process model of waste gas containing dichloromethane by ionic liquid solvent was established, the applicable range of the model were temperature of 278.15~308.15 K and pressure of 0~0.1 MPa, while the absorption at normal pressure and vacuum flashing for the recovery of CH2Cl2 was proposed. The operating parameters of the absorption tower were analyzed by simulation method, which provided which provided the optimum data at normal temperature and pressure.
[1]温志刚, 张桂华.挥发性有机物治理技术进展[J].煤炭与化工, 2016, 8(8):11-14
[2]肖洁松.医药化工行业溶剂废气治理的研究[J].科技展望, 2016, 26(8):068-068
[3]李香燕, 赵轩, 刘晓光, 等.二次活化活性炭纤维吸附回收二氯甲烷[J].环境工程学报, 2014, 8(5):2035-2039
[4]李莹, 张红星, 闫柯乐, 等.含氯挥发性有机物(Cl-VOCs)废气处理的研究进展[J].现代化工, 2016, 8(8):46-49
[5]周清.离子液体:绿色化工新宠[J].科学世界, 2013, 12(12):50-55
[6]李雪辉, 赵东滨, 费兆福, 等.离子液体的功能化及其应用[J].中国科学: 化学, 2006, 36(3):181-196
[7]王均凤, 张锁江, 陈慧萍, 等.离子液体的性质及其在催化反应中的应用[J].过程工程学报, 2003, 3(2):177-185
[8]张香平, 王健, 白璐, 等.一种含醚基吡啶类离子液体捕集酸性气体的方法:, CN 103752137 A[P]. 2014.
[9]崔国凯, 赵宁, 张峰涛, 等.离子液体捕集二氧化硫气体的研究进展[J].科学通报, 2016, 8(Z2):3115-3126
[10]Shang D W, Zhang X P, Zeng S J, et, al.Protic Ionic Liquid [Bim][NTf2] with Strong Hydrogen Bond Donating Ability for Highly Efficient Ammonia Absorption[J].Green Chemistry, 2017, 8(19):937-945
[11]郭智慧, 祁蕾, 李黎明, 等.离子液体脱氨新工艺探究[J].化工进展, 2011, 8(S1):587-590
[12]曹领帝, 曾少娟, 张香平, 等.离子液体吸收分离硫化氢进展[J].化工学报, 2015, 66(S1):1-9
[13]钟永飞, 郭斌, 任爱玲, 等.己内酰胺四丁基溴化铵离子液体吸收硫化氢的研究[J].煤炭与化工, 2010, 33(11):3-5
[14]王少坤, 王兰云, 徐永亮, 等.阴、阳离子影响离子液体溶解甲烷性能的研究进展[J].环境工程, 2016, 34(2):164-169
[15] Wang J F, Petit C, Zhang X, et al.Simultaneous measurement of CO2, sorption and swelling of phosphate-based ionic liquid[J].Green Energy & Environment, 2016, 1(1):258-265
[16]张锁江, 吕兴梅.离子液体:从基础研究到工业应用[M]. 科学出版社, 2006
[17]赵旭, 邢华斌, 李如龙, 等.离子液体在气体分离中的应用[J].化学进展, 2011, 23(11):2258-2268
[18]Gmehling J, Kolbe B, Kleiber M, et al. Chemical Thermodynamics for Process Simulation[M].Chemical thermodynamics for process simulation. Wiley-VCH, 2012.
[19]Lei Z G, Han J L, Zhang B F, Li Q S, Zhu J Q, Chen B H.Solubility of CO2 in Binary Mixtures of Room-Temperature Ionic Liquids at High Pressures[J].Journal of Chemical & Engineering Data, 2012, 57(8):2153-2159
[20]Renon H, Prausnitz J M.Local Compositions in Thermodynamic Excess Functions for Liquid Mixtures.[J].AIChE J, 1968, 8(14):135-144
