三辛基甲基氯化铵、异戊醇、磷酸三丁酯对含钛原料酸浸液中盐酸的萃取
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摘要
研究了三辛基甲基氯化铵(Aliquat 336)、异戊醇、磷酸三丁酯(TBP)对盐酸的萃取性能。研究结果表明:Aliquat 336、异戊醇对盐酸有较高的萃取率,但Aliquat 336萃取盐酸过程两相分离速度慢,异戊醇与盐酸水溶液有较大的互溶性,均不适用于盐酸的萃取。TBP是盐酸的有效萃取剂,萃取液中盐酸以TBP.HCl的形式存在,萃取速度快。盐酸萃取率随TBP浓度的增加而增加,而对钙、镁、铝无萃取性能,可实现含钛原料酸浸液中盐酸的萃取分离。以水为反萃剂,可有效反萃萃取液中的盐酸。模拟逆流萃取,绘制了以100%TBP为萃取剂,对6 mol·dm-3盐酸进行萃取的萃取-反萃等温线。
The solvent extraction of hydrochloric acid by Aliquat 336,isoamyl alcohol and TBP in kerosene has been investigated.The solvent extraction results demonstrated that Aliquat 336 and isoamyl alcohol were not appropriated to the extraction of hydrochloric acid because the separation rate was slow when using Aliquat 336 as the extractant and there was obvious intersolubility in isoamyl alcohol and hydrochloric acid,although the extraction percentage of hydrochloric acid was high by Aliquat 336 or isoamyl alcohol.TBP was the effective extraction agent of hydrochloric acid.The extracted HCl was present as HCl.TBP.The kinetics of the extraction process was fast.Extraction of hydrochloric acid increased with increased TBP concentration in the organic phase. On the other hand,calcium( Ⅱ),magnesium( Ⅱ) and aluminum( Ⅲ) were not extracted under these experimental conditions.And the separation of hydrochloric acid from acid leaching solution of titanium-bearing ores was realized. Hydrochloric acid can be effectively stripped from the loaded organic phase by H2 O.Extraction and stripping isotherms were obtained using TBP as extractant with 6 mol·dm-3 hydrochloric acid.
The solvent extraction of hydrochloric acid by Aliquat 336,isoamyl alcohol and TBP in kerosene has been investigated.The solvent extraction results demonstrated that Aliquat 336 and isoamyl alcohol were not appropriated to the extraction of hydrochloric acid because the separation rate was slow when using Aliquat 336 as the extractant and there was obvious intersolubility in isoamyl alcohol and hydrochloric acid,although the extraction percentage of hydrochloric acid was high by Aliquat 336 or isoamyl alcohol.TBP was the effective extraction agent of hydrochloric acid.The extracted HCl was present as HCl.TBP.The kinetics of the extraction process was fast.Extraction of hydrochloric acid increased with increased TBP concentration in the organic phase. On the other hand,calcium( Ⅱ),magnesium( Ⅱ) and aluminum( Ⅲ) were not extracted under these experimental conditions.And the separation of hydrochloric acid from acid leaching solution of titanium-bearing ores was realized. Hydrochloric acid can be effectively stripped from the loaded organic phase by H2 O.Extraction and stripping isotherms were obtained using TBP as extractant with 6 mol·dm-3 hydrochloric acid.
引文
[1]Kerney U.Treatment of spent pickling acids from hot dip galvanizing[J]. Resources,Conservation and Recycling,1994,10(1):145-151.
[2]Xu T,Huang C. Electrodialysis‐based separation technologies:A critical review[J]. AICh E Journal,2008,54(12):3147-3159.
[3]Kladnig W F. New development of acid regeneration in steel pickling plants[J].Journal of iron and steel research,international,2008,15(4):1-6.
[4]Demopoulos G P,Li Z,Becze L,et al.New technologies for HCl regeneration in chloride hydrometallurgy[J].World of Metallurgy-ERZMETALL,2008,61(2):89-98.
[5]Agrawal A,Sahu K K.An overview of the recovery of acid from spent acidic solutions from steel and electroplating industries[J]. Journal of hazardous materials,2009,171(1):61-75.
[6]Regel-Rosocka M.A review on methods of regeneration of spent pickling solutions from steel processing[J]. Journal of hazardous materials,2010,177(1):57-69.
[7]孙安妮,孙根行.废盐酸再生利用研究进展[J].当代化工,2011,40(11):1178-1181.
[8]吴莹莹,邬慧雄,屈艳莉.稀盐酸中回收氯化氢的分壁式萃取精馏工艺[J].化学工程,2015,43(10)69-72.
[9]李玉美,白鹏.盐酸体系汽液平衡及稀盐酸处理方法的研究进展[J].化学工程,2016,44(12):31-35+44.
[10]Schunk A,Maurer G.Distribution of hydrochloric,nitric,and sulfuric acids between water and organic solutions of tri-n-octylamine:Part I. Toluene as organic solvent[J].Fluid phase equilibria,2003,207(1):1-21.
[11]Schunk A,Maurer G.Distribution of hydrochloric,nitric,and sulfuric acid between water and organic solutions of tri-n-octylamine:Part II. Methylisobutylketone as organic solvent[J]. Fluid phase equilibria,2003,211(2):189-209.
[12]Eyal A M,Baniel A M. Recovery and concentration of strong mineral acids from dilute solutions through LLX.I:Review of parameters for adjusting extractant propert and anylysis of process options[J].Solvent Extraction and Ion Exchange,1991,9(2):195-210.
[13]Eyal A M,Hazan B,Bloch R.Recovery and concentration of strong mineral acids from dilute solutions through LLX.II:reversible extraction with branched-chain amines[J].Solvent Extraction and Ion Exchange,1991,9(2):211-222.
[14]Eyal A,Hazan B,Bloch R.Recovery and concentration of strong mineral acids from dilute solutions through LLX.III:a“temperature swing”based process[J]. Solvent Extraction and Ion Exchange,1991,9(2):223-236.
[15]Petkovl c'D M,Kope c'ni M M,Mltrovlc'A A.Solvent extraction of nitric,hydrochloric and sulfuric acid and their uranyl salts with tri-n-octylphosphine oxide[J]. Solvent Extraction and Ion Exchange,1992,10(4):685-696.
[16]Alguacil F J,López F A.The extraction of mineral acids by the phosphine oxide Cyanex 923[J]. Hydrometallurgy,1996,42(2):245-255.
[17]欧阳贻德,刘宏,包传平,等.异戊醇从氯化物-磷酸体系中萃取磷酸和盐酸[J].武汉化工学院学报,2000,22(1):4-6.
[18]Duyvesteyn W P C,Sabacky B J,Verhulst D E V,et al.Processing titaniferous ore to titanium dioxide pigment:U S Patent 6,375,923[P].2002-4-23.
[2]Xu T,Huang C. Electrodialysis‐based separation technologies:A critical review[J]. AICh E Journal,2008,54(12):3147-3159.
[3]Kladnig W F. New development of acid regeneration in steel pickling plants[J].Journal of iron and steel research,international,2008,15(4):1-6.
[4]Demopoulos G P,Li Z,Becze L,et al.New technologies for HCl regeneration in chloride hydrometallurgy[J].World of Metallurgy-ERZMETALL,2008,61(2):89-98.
[5]Agrawal A,Sahu K K.An overview of the recovery of acid from spent acidic solutions from steel and electroplating industries[J]. Journal of hazardous materials,2009,171(1):61-75.
[6]Regel-Rosocka M.A review on methods of regeneration of spent pickling solutions from steel processing[J]. Journal of hazardous materials,2010,177(1):57-69.
[7]孙安妮,孙根行.废盐酸再生利用研究进展[J].当代化工,2011,40(11):1178-1181.
[8]吴莹莹,邬慧雄,屈艳莉.稀盐酸中回收氯化氢的分壁式萃取精馏工艺[J].化学工程,2015,43(10)69-72.
[9]李玉美,白鹏.盐酸体系汽液平衡及稀盐酸处理方法的研究进展[J].化学工程,2016,44(12):31-35+44.
[10]Schunk A,Maurer G.Distribution of hydrochloric,nitric,and sulfuric acids between water and organic solutions of tri-n-octylamine:Part I. Toluene as organic solvent[J].Fluid phase equilibria,2003,207(1):1-21.
[11]Schunk A,Maurer G.Distribution of hydrochloric,nitric,and sulfuric acid between water and organic solutions of tri-n-octylamine:Part II. Methylisobutylketone as organic solvent[J]. Fluid phase equilibria,2003,211(2):189-209.
[12]Eyal A M,Baniel A M. Recovery and concentration of strong mineral acids from dilute solutions through LLX.I:Review of parameters for adjusting extractant propert and anylysis of process options[J].Solvent Extraction and Ion Exchange,1991,9(2):195-210.
[13]Eyal A M,Hazan B,Bloch R.Recovery and concentration of strong mineral acids from dilute solutions through LLX.II:reversible extraction with branched-chain amines[J].Solvent Extraction and Ion Exchange,1991,9(2):211-222.
[14]Eyal A,Hazan B,Bloch R.Recovery and concentration of strong mineral acids from dilute solutions through LLX.III:a“temperature swing”based process[J]. Solvent Extraction and Ion Exchange,1991,9(2):223-236.
[15]Petkovl c'D M,Kope c'ni M M,Mltrovlc'A A.Solvent extraction of nitric,hydrochloric and sulfuric acid and their uranyl salts with tri-n-octylphosphine oxide[J]. Solvent Extraction and Ion Exchange,1992,10(4):685-696.
[16]Alguacil F J,López F A.The extraction of mineral acids by the phosphine oxide Cyanex 923[J]. Hydrometallurgy,1996,42(2):245-255.
[17]欧阳贻德,刘宏,包传平,等.异戊醇从氯化物-磷酸体系中萃取磷酸和盐酸[J].武汉化工学院学报,2000,22(1):4-6.
[18]Duyvesteyn W P C,Sabacky B J,Verhulst D E V,et al.Processing titaniferous ore to titanium dioxide pigment:U S Patent 6,375,923[P].2002-4-23.