Equipment Description
We engaged in the design and installation work of the DMF solvent recovery equipment for many years. “Technology leadership and customer first” are its principle. It has developed single tower -single effect to seven towers – four effect of DMF solvent recovery device. DMF wastewater treatment capacity is from 3 to 50 t/h. Recovery device comprises an evaporating concentration, distillation, deamination, residue processing, tail gas treatment process. Technology has reached the international advanced level.
Technical Data
The quality of the DMF recovery solvent up to the synthetic level
| Item | Technical Data |
| Water | ≤200ppm |
| FA | ≤25ppm |
| DMA | ≤15ppm |
| Electrical conductivity | ≤2.5µs/cm |
| Rate of recovery | ≥99% |
Equipment Character
Rectifying system of DMF solvent
The rectifying system adopt vacuum concentration tower and rectifying tower, the main process is first concentration tower (T101), second concentration tower (T102) and rectifying tower (T103), the systemic energy conservation is obvious. The system is one of the latest process currently. There is filler structure to reduce the pressure drop and operation temperature.
Vaporization system
Vertical evaporator and forced circulation is adopted in the vaporization system, the system have the advantage of easy cleaning, easy operation and long continual running time.
DMF De-acidification System
The DMF deacidification system adopt gaseous phase discharging, which solved the difficulties of long process and high disintegrate of DMF for liquid phase, meanwhile reduce heat consumption of 300,000kcal. it is low energy consumption and high recovery rate.
Residue Vaporization System
The system is specially designed for treat the liquid residue. The liquid residue is directly discharged to the residue dryer from the system, after drying, and then discharge, which can max. recover the DMF in the residue. It improves the DMF recovery rate and meanwhile reduce the pollution.
Site Commissioning
