CAJ | 학술논문

针对目前对二甲苯（PX）装置异构化单元普遍采用冷高压分离工艺导致装置用能不合理的现状，分析了采用热高压分离工艺的优势以及采用热高压分离工艺需要注意的问题；建立了能够准确分析异构化反应产物的分析方法，利用 ASPEN PLUS 流程模拟软件对热高压分离工艺过程进行了模拟计算，结果表明，采用热高压分离工艺对循环氢浓度几乎没有影响；通过热高压分离工艺的工业应用证明了该工艺是可行的；提出了采用热高压分离工艺后的对二甲苯装置能量优化匹配方案，并通过流程模拟进行了热负荷核算，结果表明采用新的流程可使370 kt？a 的 PX 装置能耗下降627 MJ？t。
침대목전대이갑분（PX）장치이구화단원보편채용랭고압분리공예도치장치용능불합리적현상，분석료채용열고압분리공예적우세이급채용열고압분리공예수요주의적문제；건립료능구준학분석이구화반응산물적분석방법，이용 ASPEN PLUS 류정모의연건대열고압분리공예과정진행료모의계산，결과표명，채용열고압분리공예대순배경농도궤호몰유영향；통과열고압분리공예적공업응용증명료해공예시가행적；제출료채용열고압분리공예후적대이갑분장치능량우화필배방안，병통과류정모의진행료열부하핵산，결과표명채용신적류정가사370 kt？a 적 PX 장치능모하강627 MJ？t。
Cold high-pressure separation process is now widely used in isomerization unit of PX com-plex,and results in an unreasonable energy consumption of PX complex. The advantages and the prob-lems when using hot high-pressure separation process are analyzed. An accurate method for determina-tion of isomerization product distribution is established. The hot high-pressure separation process is simulated by ASPEN PLUS,and the results indicate that recycle hydrogen concentration is almost not changed,compared with cold high-pressure separation process. Hot high-pressure separation process is proved to be feasible by industrial practice. The energy optimization scheme is proposed,and the simu-lation proves that the energy consumption of 370 kt?a PX complex can be reduced by 627 MJ?t.