Dehydration device and dehydration method based on cyclohexane product

The invention provides a dehydration device and a dehydration method based on a cyclohexane product. The dehydration device based on the cyclohexane product comprises a vaporizer, a condenser, a reaction system and a pipeline system, wherein the reaction system comprises a first reactor, a second reactor and a third reactor, and the pipeline system comprises a feeding pipe and a discharging pipe; the feeding pipe, the vaporizer, the first reactor, the second reactor, the third reactor, the condenser and the discharging pipe are sequentially connected in series; the first reactor, the second reactor and the third reactor are respectively connected in series with at least one stop valve and connected in parallel with at least one stop valve; a diluent and a molecular sieve are arranged in each of the first reactor and the second reactor, and a molecular sieve is arranged in the third reactor. According to the embodiment, the product quality is improved; the service life of the molecular sieve is prolonged and t