硫氰酸铵过饱和度的研究

硫氰酸铵过饱和度的研究硫氰酸铵过饱和度的研究姜永波,董永军,庞立营(大连化工研究设计院,辽宁大连116023)摘要:研究了各种因素对25℃下硫氰酸铵水溶液过饱和度的影响。25℃下硫氰酸铵水溶液过饱和度不稳定,加入沸石后稳定在3℃左右,加入晶种后稳定在0.17℃左右,加快降温速度过饱和度增大,加快搅拌速度过饱和度减小。测得25℃下有硫代硫酸铵和硫酸铵存在的混合母液中硫氰酸铵温度过饱和度为1.80℃,浓度过饱和度质量分数为0.34%。过饱和度消失时间30min。上述结果已应用于杭钢煤气脱硫脱氰废液处理装置工程设计。关键词:硫氰酸铵;过饱和度;废液处理中图分类号:TQ546.5文献标识码:B文章编号:036726358(2015)102588203StudyoftheSupersaturationofAmmoniumSulfocyanideJIANGYong2bo,DONGYong2jun,PANGLi2ying(DalianResearchandDesignInstituteofChemicalIndustry,LiaoningDalian116023,China)Abstract:Theeffectsofdifferentfactorsonthesupersaturationtemperatureoftheaqueoussolutionofammoniumsulfocyanideat25℃werestudied.Thesupersaturationtemperatureisunstable.It’sabout3℃inthepresenceofzeoliteor0.17℃whensomeothercrystalseedsareadded.Thesupersaturationisincreasedwiththerateoftemperaturedeclineanddecreasedwiththerateofrotationofthemixer.Thesupersaturationtemperatureofammoniumsulfocyanideinaqueoussolutioncontainingammoniumthiosulfateandammoniumsulfateat25℃is1.80℃.Thesupersaturatedconcentrationis0.34%(m