The invention belongs to the field of chloropropene production equipment and relates to a novel anti-clogging heat exchanger. The novel anti-clogging heat exchanger comprises a cylindrical shell; a shell pass inlet mechanism is arranged on the upper portion of the cylindrical shell; a shell pass outlet mechanism is arranged on the lower portion of the cylindrical shell; a shell pass inlet tube is arranged on the upper portion of the side face of the cylindrical shell; a shell pass outlet tube is arranged on the lower portion of the side face of the cylindrical shell; and a heat exchange tube mechanism is arranged inside the cylindrical shell. Compared with a U-shaped tube, products flow through a tube pass and preheated propylene flow through a shell pass in process, an original heat exchange area is maintained, carbon deposition of reactants on a system is prevented, the heat exchanger is not clogged, and the reaction operational cycle is prolonged; and meanwhile, device cleaning is also facilitated. The heat exchanger is further provided with a second tube plate. A carbon storage container is defined by the second tube plate and the cylindrical shell, namely, carbon in the reaction process of the chloropropene can deposit in the carbon storage container.