Product Display
DTB crystallizer is a high-efficiency crystallization equipment, which has the characteristics of high heat transfer efficiency, simple configuration, convenient operation and control, and good operating environment. This crystallizer can be used for various crystallization operations such as vacuum adiabatic cooling crystallization, evaporation crystallization, direct contact cooling crystallization, and reaction crystallization.
working principle
The DTB crystallizer is equipped with a guide tube and a cylindrical baffle. During operation, the hot saturated liquid is continuously added to the lower part of the circulation tube, mixed with the mother liquor containing small crystals in the circulation tube, and pumped to the heater. The heated solution flows into the crystallizer near the bottom of the guide tube and is transported to the liquid level along the guide tube by a slowly rotating propeller. The solution evaporates and cools at the liquid surface, reaching a supersaturated state, where some solutes deposit on the surface of suspended particles, causing crystal growth. There is also a settling zone around the annular baffle. Large particles settle in the settling zone, while small particles enter the circulation pipe with the mother liquid and dissolve under heat. The bottom of the crystallizer is equipped with washing legs, and the crystals enter the washing column at the bottom of the crystallizer. In order to make the particle size of the crystallized product as uniform as possible, a portion of the mother liquor from the settling zone is added to the bottom of the elution column, and the hydraulic classification is used to allow small particles to return to the crystallizer with the liquid flow, while the crystallized product is discharged from the lower part of the elution column. During the crystallization process, the supersaturation of the solution, the uniformity and consistency of the material temperature, as well as the stirring speed and cooling area, are the decisive factors affecting the grain size and appearance of the product.
Performance characteristics
The DTB crystallizer combines mature process and equipment characteristics, integrating functions such as internal circulation, external circulation, and crystal diversity, and can produce crystals with larger particle sizes, up to 600-1200 μ m. At the same time, the DTB type crystallizer has high production intensity and is not prone to scarring inside the crystallizer.
Adapt to materials
Widely used in chemical, food, pharmaceutical and other fields. The DTB crystallizer produced by our company adopts a dedicated stirring blade, and the temperature and stirring blade speed can be adjusted for easy system self-control to meet the crystallization requirements of various materials.