Parallel combined separation process suitable for coal with complex coal quality

The invention discloses a parallel combined separation process suitable for coal with complex coal quality, which can be changed into three production processes according to the selectability of raw coal, namely easy selection, medium selection, relatively difficult selection, difficult selection and extremely difficult selection, and whether the raw coal has a argillization phenomenon, the production process is transformed on the basis of the original production equipment, and the production efficiency is improved. The utilization rate of an old production system is high, and the system transformation cost is low; and the process structure is flexible, the plasticity is high, and different separation processes can be provided according to different raw coal qualities. The problems that a traditional separation process is difficult to face complex fluctuation of coal quality and the utilization rate of an old production system is low are solved, and the system is stable and reliable in operation, high in sepa