System and process for continuously synthesizing 3-(N, N-dimethylamino)-N, N-dimethylpropionamide without catalyst

The invention discloses a system and process for continuously synthesizing 3-(N, N-dimethylamino)-N, N-dimethylpropionamide without a catalyst, and the system sequentially comprises a plate heat exchanger, a buffer storage tank, a material pump and a pipeline reactor according to the material flow direction; a material inlet of the plate heat exchanger is connected with a material main pipeline, and the material main pipeline is used for connecting a methyl acrylate source and a dimethylamine source. The process comprises the steps that methyl acrylate and dimethylamine enter a plate heat exchanger to be heated to 10-50 DEG C for reaction, then enter a buffer storage tank to be buffered and enter a pipeline reactor through a material pump for continuous reaction, and the temperature and the pressure in the pipeline reactor are adjusted to be 180-260 DEG C and 5.5-15 MPa respectively. According to the process, no catalyst is needed, salt solid waste is avoided, continuous production isachieved, and the reactio