Mvr evaporator design pdf

Principles of function and design features 10 regulating the capacity of mechanical vapour recompression systems 11. Since evaporation involves boiling, the gas sublayer in contact with the liquid phase in the liquidvapor interface will be comprised of generated steam. Operation the liquid to be concentrated is supplied to the top of the heating tubes and distributed in such a way as to flow down the inside of the tube walls as a thin film. Evaporation is an operation used to remove a liquid from a solution, suspension, or emulsion by boiling off some of the liquid. By using this design, the encon mvc evaporator allows for minimal scaling, maximum uptime, and low operating costs. Encon describes the different capacities that they can provide with their mvc waste water evaporators. In conventional evaporators, the energy content of the vapour stream pro. Compared to multipleeffect evaporators, mvr evaporators consume considerably less energy. Evaporator types falling film evaporators design vertical shellandtube heat exchanger, with laterally or concentrically arranged centrifugal separator. Technology and applications gea engineering for a better. Andritz mechanical vapor recompression mvr evaporator. An evaporator for indirect heat transfer is only a modified heat exchanger. Howden understands the unique process, aerodynamic, mechanical, and operations requirements of mvr applications, which differ from most any. Pdf detailed design of a single effect evaporator with.

This selection is done based on the wastewater properties. Low vapor velocities inside the evaporator, low shear rates, and the free flow falling film construction are advantages of the andritz design in minimizing foam creation. This is a reduction of up to 99% compared to a 1 effect steam driven evaporator. The encon mechanical vapor recompression mvr evaporation process involves our forced circulation flash evaporator utilizing mechanical vapor compression.

Evaporators and condensers in a new dimension the complete range. Process wastewater is fed by the feed pump through the feedstock heat. Technology and applications evaporation technology using mechanical vapour recompression. We define the evaporation process as one that starts with a liquid. A mechanical vapor recompression evaporator system is similar to a conventional steam heated, singleeffect evaporator, except that the vapor released from the boiling solution is compressed. Mechanical vapor recompression blower and compressor. The epcon mvr evaporator only uses 840 kwh per ton evaporated water.