Solvent separation device and separation method for chemical production

The invention relates to the technical field of solvent separation, and particularly discloses a solvent separation device for chemical production and a separation method.The solvent separation device comprises a shell, a feeding pipe and a drain valve, a connecting cylinder is arranged in the shell in the axial direction, cylinder bodies are fixedly connected to the two ends of the connecting cylinder, and the ends, away from the connecting cylinder, of the cylinder bodies are rotationally connected with the shell; a cavity is formed between the connecting cylinder and the inner side of the cylinder body and communicated with the feeding pipe and the liquid discharging valve, the connecting cylinder and the cylinder body can rotate in the axial direction of the shell and can mix liquid, and the connecting cylinder can move in the axial direction of the shell. Through lifting of the connecting cylinder and the cylinder body, liquid in a layering area is located in the connecting cylinder, the isolation plate