Method and device for preparing high isotactic polybutylene-1 by batch method

The invention relates to a batch method high isotactic polybutylene-1 preparation method and a batch method high isotactic polybutylene-1 preparation device, the preparation method comprises the following steps: S1, propylene, a cocatalyst, an external electron donor, hydrogen and a main catalyst are sent into a pre-polymerization reaction kettle for polymerization to obtain polypropylene; s2, feeding butene-1, a cocatalyst, an external electron donor, hydrogen and a main catalyst into a polymerization reaction kettle, and feeding the polypropylene generated in the step S1 into the polymerization reaction kettle for polymerization to generate polybutene-1; and S3, feeding the polybutylene-1 obtained in the step S2 into a devolatilization unit for devolatilization to obtain the high isotactic polybutylene-1. The industrial preparation method of the high isotactic polybutylene-1 is simple in technological process, convenient to operate and free of organic solvents, and a polymer product is not stuck to a kettle