Mvr evaporator design pdf

An evaporator for indirect heat transfer is only a modified heat exchanger. Encon describes the different capacities that they can provide with their mvc waste water evaporators. Compared to multipleeffect evaporators, mvr evaporators consume considerably less energy. Andritz mechanical vapor recompression mvr evaporator. Process wastewater is fed by the feed pump through the feedstock heat. 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. Mvr or mechanical vapor recompression also known as mvc is a technology where the vapor is compressed in a fan or a. The epcon mvr evaporator only uses 840 kwh per ton evaporated water. This selection is done based on the wastewater properties. Technology and applications gea engineering for a better. Mechanical vapor recompression blower and compressor. It is thus a thermal separation, or thermal concentration, process. Download fulltext pdf detailed design of a single effect evaporator with thermal vapor re compression thesis pdf available march 2016 with 4,990 reads.

Evaporators and condensers in a new dimension the complete range. The encon mechanical vapor recompression mvr evaporation process involves our forced circulation flash evaporator utilizing mechanical vapor compression. This is a reduction of up to 99% compared to a 1 effect steam driven evaporator. 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. 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. Since evaporation involves boiling, the gas sublayer in contact with the liquid phase in the liquidvapor interface will be comprised of generated steam. Pdf detailed design of a single effect evaporator with. Principles of function and design features 10 regulating the capacity of mechanical vapour recompression systems 11. In conventional evaporators, the energy content of the vapour stream pro. Evaporator types falling film evaporators design vertical shellandtube heat exchanger, with laterally or concentrically arranged centrifugal separator. Howden understands the unique process, aerodynamic, mechanical, and operations requirements of mvr applications, which differ from most any. The liquid distributor is the most critical component in any fallingfilm evaporator. By using this design, the encon mvc evaporator allows for minimal scaling, maximum uptime, and low operating costs.