Mvr evaporator design pdf

Process wastewater is fed by the feed pump through the feedstock heat. Evaporator types falling film evaporators design vertical shellandtube heat exchanger, with laterally or concentrically arranged centrifugal separator. The epcon mvr evaporator only uses 840 kwh per ton evaporated water. By using this design, the encon mvc evaporator allows for minimal scaling, maximum uptime, and low operating costs. In conventional evaporators, the energy content of the vapour stream pro. 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. We define the evaporation process as one that starts with a liquid. 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. Since evaporation involves boiling, the gas sublayer in contact with the liquid phase in the liquidvapor interface will be comprised of generated steam. This selection is done based on the wastewater properties. Principles of function and design features 10 regulating the capacity of mechanical vapour recompression systems 11. It is thus a thermal separation, or thermal concentration, process. Howden understands the unique process, aerodynamic, mechanical, and operations requirements of mvr applications, which differ from most any.

Mechanical vapor recompression blower and compressor. Evaporation is an operation used to remove a liquid from a solution, suspension, or emulsion by boiling off some of the liquid. Download fulltext pdf detailed design of a single effect evaporator with thermal vapor re compression thesis pdf available march 2016 with 4,990 reads. 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. Technology and applications gea engineering for a better. Compared to multipleeffect evaporators, mvr evaporators consume considerably less energy. 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. An evaporator for indirect heat transfer is only a modified heat exchanger. Andritz mechanical vapor recompression mvr evaporator. The liquid distributor is the most critical component in any fallingfilm evaporator. This is a reduction of up to 99% compared to a 1 effect steam driven evaporator.