Device for preparing ammonium nitrate solution

The utility model relates to a device for preparing ammonium nitrate solution, which comprises a forcing pipe type reactor, a separator and a secondary process steam processing system, wherein the secondary process steam processing system consists of a venturi reaction saturator and a washing tower, the forcing pipe type reactor is communicated with the separator, the secondary process steam reactant of which is separated by the separator leads into the venturi reaction saturator, the venturi reaction saturator is formed by the means that a mixing section, a venturi reaction section and a connecting pipe are sequentially connected with one another, the washing tower comprises a filler section, a tower plate section and a fiber demister, and a circulating pump is arranged at the bottom of the washing tower. The device is characterized in that reaction is preformed by two steps, wherein 96-98% of main reaction is preformed in the forcing pipe type reactor, and 2-4% of postreaction is preformed in a venturi post