CAJ | 학술논문

机械蒸汽再压缩（MVR）热泵技术是把低品位的蒸汽通过压缩转变为高品位的蒸汽，循环用于热源的供热以减少能耗。而热集成技术则是合理的匹配冷热物流的换热，以提高物流的有效能利用率。鉴于精馏过程的高能耗和低热力学效率，本文以四元混合醇的分离为研究对象，把基于MVR热泵技术的热集成精馏工艺应用于该体系的分离，提出并研究了该体系带热集成与不带热集成各种MVR精馏工艺；以能耗和年总费用（TAC）为评价指标，采用Aspen Plus软件对各分离工艺进行模拟与优化，确定各分离工艺的操作参数与设备参数。研究结果表明，与常规顺序分离工艺相比，MVR精馏工艺节约能耗50%以上，节约年总费用约61%。带热集成MVR精馏工艺与不带热集成 MVR 精馏工艺相比，在能耗和年总费用方面，优势相当，但前者热力学效率提高了约9.5%。
궤계증기재압축（MVR）열빙기술시파저품위적증기통과압축전변위고품위적증기，순배용우열원적공열이감소능모。이열집성기술칙시합리적필배랭열물류적환열，이제고물류적유효능이용솔。감우정류과정적고능모화저열역학효솔，본문이사원혼합순적분리위연구대상，파기우MVR열빙기술적열집성정류공예응용우해체계적분리，제출병연구료해체계대열집성여불대열집성각충MVR정류공예；이능모화년총비용（TAC）위평개지표，채용Aspen Plus연건대각분리공예진행모의여우화，학정각분리공예적조작삼수여설비삼수。연구결과표명，여상규순서분리공예상비，MVR정류공예절약능모50%이상，절약년총비용약61%。대열집성MVR정류공예여불대열집성 MVR 정류공예상비，재능모화년총비용방면，우세상당，단전자열역학효솔제고료약9.5%。
The low grade steam is transformed into a high grade steam through the compression by mechanical vapor recompression(MVR) heat pump technology,and the high grade steam is cyclic utilized for heat source to reduce energy consumption. The heat integration technology is reasonable to match the heat exchange of cold and hot logistics to improve the effective energy utilization of logistics. In view of the high energy consumption and low mechanical efficiency of the distillation process,heat integrated separation technology based on the MVR heat-pump distillation was applied to separate the four mixed alcohol system in this research,and the MVR heat-pump distillation process with and without heat integration were proposed. Based on the minimum total annual cost(TAC) and energy consumption,simulations for the each kind of distillation process were performed by Aspen Plus software,and the optimal operating parameters and plant parameters were determined. The simulation results showed that the MVR heat-pump distillation can save energy by 50% and total annual cost by 61% respectively compared with the conventional order separation process. Both of the MVR heat-pump distillation with and without heat integration have the same excellent performance in energy saving and annual total cost saving,but the former can improve the thermodynamic efficiency by 9.5%.