CAJ | 학술논문

肌氨酸作为一种高附加值的精细化工产品具有广泛的应用前景。目前肌氨酸的生产过程中存在肌氨酸产品与无机盐的分离过程。传统的分离方法为分步结晶法，存在能耗高、消耗的化学试剂多、污染大等缺点。为实现肌氨酸的清洁生产，本文采用自制电渗析装置对肌氨酸进行分离纯化，考察了操作电流以及溶液起始 pH 对整个分离效果的影响。结果表明，当操作电流为2 A，起始pH为6.5时，电渗析过程中无机盐的去除率大于99%，其产品得率为71.5%，电渗析工艺生产肌氨酸的能耗为26.4 kW·h·t?1，总成本仅为311元·t?1，大大优于传统的生产工艺。由此可见，电渗析工艺可实现肌氨酸产品的节能、环保生产。
기안산작위일충고부가치적정세화공산품구유엄범적응용전경。목전기안산적생산과정중존재기안산산품여무궤염적분리과정。전통적분리방법위분보결정법，존재능모고、소모적화학시제다、오염대등결점。위실현기안산적청길생산，본문채용자제전삼석장치대기안산진행분리순화，고찰료조작전류이급용액기시 pH 대정개분리효과적영향。결과표명，당조작전류위2 A，기시pH위6.5시，전삼석과정중무궤염적거제솔대우99%，기산품득솔위71.5%，전삼석공예생산기안산적능모위26.4 kW·h·t?1，총성본부위311원·t?1，대대우우전통적생산공예。유차가견，전삼석공예가실현기안산산품적절능、배보생산。
Sarcosine is a high-value fine chemical which has many significant applications. Now there is a separation process to remove the inorganic salts from the target product during the production of sarcosine. Multistage fractional crystallization is the conventional separation technology for sarcosine production which has many drawbacks such as high energy consumption, large consumption of chemicals and environmental pollution. To achieve cleaner production of sarcosine, a self-made electrodialysis stack was used in the separation and purification of the target product. The influences of current density and initial pH value in the feed solution on the production of sarcosine were investigated. Results indicated that salt removal rates higher than 99% and a product recovery ratio of 71.5% can be obtained at a current of 2 A and initial feed solution of pH 6.5. The total energy consumption for sarcosine production was 26.4 kW·h·t?1 and the total process cost was estimated at 311￥·t?1, which is much less than the conventional separation technologies. It can be seen that electrodialysis is not only energy-saving but also environment- friendly for the industrial production of sarcosine.