Dual-circulation injection reactor

The invention provides a dual-circulation injection reactor. The dual-circulation injection reactor is composed of a primary reaction kettle (4) with an injector, a secondary reaction kettle (3) with an injector, a circulation pump, a connection pipeline, a set of raw material storage tank and a product outlet pipe. The reaction kettle with the injector is structured by installing a jet-type venturi injector on the upper part of the reaction kettle. The injector (1) corresponds to the secondary reaction kettle (3). The injector (2) corresponds to the primary reaction kettle (4). Liquid raw materials enter from the tops of the injectors. Gas raw materials enter from the side surfaces of the injectors. The lower part of the reaction kettle is provided with a product outlet. The product outlet is connected to an inlet pipe of the circulation pump and then connected back to top inlets of the injectors of the reaction kettle. Through a dual-circulation injection type reaction system, gas and liquid react more comp