Equipment descriptions
The single-effect external circulation vacuum concentrator is composed of heater, evaporator, defoamer, condenser, cooler and liquid receiving tank. The parts that contact materials are all made of stainless steel. The equipment is applicable to evaporation and concentration of liquid materials in pharmacy, food, chemical industry and light industry etc. industries. The concentrating time is short and the evaporating s peed is high, which can better protect the heat sensitive materials from being damaged.
The series of single-effect evaporators have three forms
WZ single-effect external circulation vacuum concentrator is the ordinary type, which is used for evaporation of water solution.
WZS single-effect external circulation vacuum ointment collection concentrator is used for single-effect evaporation and thick ointment collection. After the normal single-effect evaporation, the valves connecting the spraying tube and circulating tube in the heating chamber and evaporating chamber will be closed. The liquid materials will fully enter the evaporating chamber and through the jacket heating in the evaporating chamber, normal pressure type or pressure relief type concentration will be carried out. The concentration
specific gravity of materials will be increased to 1 .35-1.45.
Main technical parameter
| Model and specification | WZ-500 | WZ-1000 | WZ-1500 | WZ-2000 |
| Evaporating capacity(kg/h) | 500 | 1000 | 1500 | 2000 |
| Recycled alcohol density(%) | 80-85 | |||
| Steam pressure(MPa) | 0.03-0.09 | |||
| Vacuum degree(MPa) | -0.05~-0.08 | |||
| Evaporating room area(m3) | 1 | 1.5 | 2 | 2.5 |
| Liquid receiving volume(m3) | 0.3 | 0.5 | 0.8 | 1 |
| Steam cost(Kg/h) | 520 | 1050 | 1550 | 2100 |
| RWate cost(T/h) | 7 | 10 | 15 | 20 |
| Heating steam inlet(mm) | 40 | 50 | 80 | 100 |
| Cooling water inlet and outlet(mm) | 40 | 50 | 65 | 80 |
Under the condition of sufficient condensing area, the equipment adopts the combination method of column tube condensation and coil cooling. The equipment is compact and the gas liquid phase is reasonable. The shell side is equipped with multilayer baffles to improve the circulation speed of cooling water. The tube range is designed as a double tube process, which can add a long gas flow channel and a coil cooler with high heat transfer efficiency. It can fully condensate the residual steam and cool the flow through the liquid. This combination has good condensation effect and high recovery rate of alcohol (up to 95%). The heat load of the vacuum pump is reduced and the energy consumption is reduced.
