| abstract |
The invention relates to a chlorothalonil crystal lattice transformation device and a preparation method. The transformation device comprises a feeding tank, the feeding tank is connected to a feeding port of a transformation mixer through a screw feeder, and a discharge port and an inlet port are arranged at the bottom end of the transformation mixer. The gas port and the air inlet are connected to the preheater, the flow meter, and the fluidized gas storage tank in turn; the type I lattice chlorothalonil and the type II lattice chlorothalonil are fluidized in the transformation mixer according to a certain mass ratio Mixing, at the same time, the fluidizing gas in the fluidizing gas storage tank is preheated by the preheater and then enters the transformation mixer at a certain flow rate, and the type II lattice chlorothalonil is transformed in the transformation mixer. Adopted and analyzed by X-ray diffraction. The transformation device of the chlorothalonil crystal lattice of the invention does not require mechanical stirring, realizes the continuous and rapid transformation of the chlorothalonil original drug, shortens the time required for transformation, and has high transformation efficiency, and the obtained chlorothalonil original drug has a high crystal form transformation rate. |