Internal Thermally Coupled Distillation Column(ITCDIC) is the research frontier of distillation energy saving . This paper investigates the principium design of ideal ITCDIC. A novel design model of ideal ITCDIC is de...Internal Thermally Coupled Distillation Column(ITCDIC) is the research frontier of distillation energy saving . This paper investigates the principium design of ideal ITCDIC. A novel design model of ideal ITCDIC is derived, which can not only directly achieve the system characteristics and comparative characteristics with conventional distillation columns, but also be used for further control and design studies. A series of detailed operation analyses are carried out, which pave the way for further research and practice application.展开更多
Based on the previous design model, degrees of freedom analysis and transient analysis are carried out. A PID control model is proposed. The results show that ITCDIC is a self-regulating process, and could be operated...Based on the previous design model, degrees of freedom analysis and transient analysis are carried out. A PID control model is proposed. The results show that ITCDIC is a self-regulating process, and could be operated smoothly with two PID controllers; the steady state design could be disassociate with the dynamic design. An optimization model of ITCDIC design parameters is derived, which can directly achieve the optimal design parameters providing the maximum energy savings and the product quality simultaneously. Benzene-toluene system is studied as an illustrative example.展开更多
文摘Internal Thermally Coupled Distillation Column(ITCDIC) is the research frontier of distillation energy saving . This paper investigates the principium design of ideal ITCDIC. A novel design model of ideal ITCDIC is derived, which can not only directly achieve the system characteristics and comparative characteristics with conventional distillation columns, but also be used for further control and design studies. A series of detailed operation analyses are carried out, which pave the way for further research and practice application.
文摘Based on the previous design model, degrees of freedom analysis and transient analysis are carried out. A PID control model is proposed. The results show that ITCDIC is a self-regulating process, and could be operated smoothly with two PID controllers; the steady state design could be disassociate with the dynamic design. An optimization model of ITCDIC design parameters is derived, which can directly achieve the optimal design parameters providing the maximum energy savings and the product quality simultaneously. Benzene-toluene system is studied as an illustrative example.
