Evaporation is used in order to increase the concentration of a solution.The purpose can be to remove as much water as possible before transportation or storage,or as a preliminary stage in a liquid to powder drying process.
Next to distilling, evaporation is the most energy-demanding process in the food,beverage pharmaceutical ,chemical and organic natural products industries. This means the performance optimisation is critical in minimizing process costs.
Zonghong offer a complete rang of energy-efficient, high-performance evaporation solutions for the dairy,food,pharmaceutical and chemical industries. Our engineers will be pleased to assist you in determining the optimum solution for your specific needs, depending on your product ,energy source and energy price.
Multiple-effects evaporation
If it is a single-effect evaporator , in the common case of evaporation, about 1Kg/hr of vapour will be produced by 1kg/hr of live steam.
If the amount of vapour produced by primary energy is used as heating steam in a
second effect,the energy of the overall system is reduced by about 50%, This principle can be continued over further effects to save even more energy.
| |
Live steam |
Vapour |
Steam consumption |
| 1-effect-plant |
1kg/h |
1kg/h |
100% |
| 2-effect plant |
1kg/h |
2kg/h |
50% |
| 3-effect plant |
1kg/h |
3kg/h |
33% |
| 4-effect plant |
1kg/h |
4kg/h |
25% |
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