Mother liquor heater in process of preparing ammonium sulfate from coke oven gas

The utility model discloses a mother liquor heater in the process of preparing ammonium sulfate from coke oven gas, which comprises a cylinder body, an upper end socket is arranged at the upper end of the cylinder body, a lower end socket is arranged at the bottom end of the cylinder body, an air inlet pipe is fixed at the upper end of one side wall of the cylinder body, an impingement plate is arranged at one end of the air inlet pipe, and a lower pipe plate is fixed at the inner bottom end of the cylinder body. An upper tube plate is fixed to the upper end in the barrel, heat exchange tubes are arranged between the upper tube plate and the lower tube plate in a circumferential array mode, and a pull rod is fixed to the inner wall of the barrel. The utility model has the beneficial effects that the mother liquor heater is used, the temperature of the mother liquor is raised through steam heating, on one hand, small-particle crystals in the mother liquor are dissolved, the number of crystal nucleuses is reduc