Industrial large-scale reaction kettle

The invention discloses an industrial large-scale reaction kettle. The reaction kettle comprises at least two secondary stirrers, and each secondary stirrer comprises a first motor fixedly arranged ona support, and a driving gear and a driven gear pivoted at the exterior of a jacket; and the motor shaft of each first motor drives one corresponding driving gear to rotate through a belt, each driving gear engages with one corresponding driven gear, and gear shafts of each driving gear and each driven gear pass through the jacket and the body wall of a kettle body in a seal manner to be respectively and fixedly connected with a driving stirring paddle and a driven stirring paddle, an axial direction of the gear shaft of each driving gear or each driven gear is perpendicular to an axial direction of a stirring shaft, and a controller separately controls rotating time and rotating speeds of a second motor and the first motors. Compared with the prior art, the reaction kettle provided by the invention can realize u