The invention relates to a 
system and a method for recycling refined methyl 
cyclopentane and application of the 
system and the method. The 
system comprises a 
dehydrogenation unit, a purification unit,a 
solvent recycling unit as well as a heat exchange unit, wherein the 
dehydrogenation unit, the purification unit and the 
solvent recycling unit are sequentially connected; the 
dehydrogenation unit is a first extraction 
distillation column; the purification unit is a second extraction rectification unit; the heat exchange unit comprises a first 
heat exchanger, a second 
heat exchanger and a thirdheat exchanger which are independent from one another; a 
raw material input pipeline penetrates through the first 
heat exchanger and then is connected with a 
raw material inlet in the first extractiondistillation column; a first pipeline is arranged at the bottom of the first extraction 
distillation column, and so on in a similar manner. An extraction agent used in the method is a mixed 
solvent which is composed of one or a combination of at least two of 
sulfolane, 
ethylene glycol, glycerin, NMF (N-Formylmorpholine), NMP (N-Methyl Pyrrolidone) and DMF (
Dimethyl Formamide), and a deep-eutecticsolvent in a compounded manner. By adopting the system and the method, a methyl 
cyclopentane product of which the purity is greater than 99.95wt% can be purified at one time, and the recycling rate of methyl 
cyclopentane is greater than 99%.