CAJ | 학술논문

对顺酐加氢产物精制丁二酸的工艺进行了研究。考察了蒸馏压力、蒸馏温度及回流比对减压蒸馏过程的影响；考察了水解时间、水与酸酐物质的量比对水解过程的影响；考察了结晶温度对结晶过程的影响。确定了顺酐加氢产物减压蒸馏后水解结晶精制丁二酸的方法及工艺条件。结果表明，在减压蒸馏温度为75～85℃，蒸馏压力为200～300 Pa ，水解温度为100℃，水与丁二酸酐物质的量比为4～5，水解时间为2 h的条件下，得到的丁二酸产品收率≥70％，纯度≥99．5％。
대순항가경산물정제정이산적공예진행료연구。고찰료증류압력、증류온도급회류비대감압증류과정적영향；고찰료수해시간、수여산항물질적량비대수해과정적영향；고찰료결정온도대결정과정적영향。학정료순항가경산물감압증류후수해결정정제정이산적방법급공예조건。결과표명，재감압증류온도위75～85℃，증류압력위200～300 Pa ，수해온도위100℃，수여정이산항물질적량비위4～5，수해시간위2 h적조건하，득도적정이산산품수솔≥70％，순도≥99．5％。
The process of succinic acid purifying from product of maleic anhydride hydrogenation was studied .The effects of distillation pressure ,temperature and reflux ratio on the process of vacuum distillation were investigated ;it also discussed the effects of reaction time and molar ratio of water to succinic anhydride on hydrolysis ;meanwhile ,the effect of temperature on the crystallization was concerned . The pure succinic acid was acquired through vacuum distillation , hydrolyzation and crystallization .The process conditions of purifying technology of succinic acid were detemined .The results show that the yield of succinic acid is more than 70% and purity of the product can reach 99 .5% even more under the conditions of vaccum distillation temperature 75~85 ℃ ,distillation pressure 200~300 Pa ,hydrolysis temperature 100 ℃ ,molar ratio of water to succinic anhydride 4~5 ,reaction time 2 h .