利用工业生产废酸制间苯二酚  

Preparation of resorcinol using waste sulfuric acid

作　　者：吴晓宇[1] 张未星[1] 吕秀阳[1] 

机构地区：[1]浙江大学化学工程系,浙江杭州310027

出　　处：《化工进展》2009年第2期346-348,353,共4页Chemical Industry and Engineering Progress

摘　　要：钛白粉生产过程所产生的废硫酸经预处理、稀释后,用于间苯二胺酸性水解制备间苯二酚。考察了过渡金属盐催化剂、反应温度、时间等对间苯二酚收率的影响,结果表明在催化剂与硫酸摩尔比0.008∶2、反应温度220℃,反应时间9h条件下,间苯二酚收率达到90.2%。改进后的处理工艺能够提高产率、降低能耗和废弃物排放。该工艺不仅回收利用废硫酸以降低污染,同时具有显著的经济价值。After pretreatment and dilution, waste sulfuric acid from titanium white production was used for preparation of resorcinol by acidic hydrolysis of meta-phenylenediamine. The effects of transition metal salt catalyst, reaction temperature and time on the yield of resorcinol were investigated. A yield of 90.2% was achieved under the conditions of mole ratio of catalyst to sulfuric acid 0.008 ： 2, reaction temperature 220℃ and reaction time 9h. Post treatment process was modified to give a higher yield, lower energy cost and less wastes.The process featuresnot only reduction of waste release by reuse of waste sulfuric acid, but also significant economic benefits.

关 键 词：废硫酸 钛白废酸 间苯二胺 酸性水解 间苯二酚 

分 类 号：TQ031.5[化学工程] TQ243.1