Ads
related to: controlled water flash evaporation system
Search results
Results From The WOW.Com Content Network
The water is heated and then routed into a reduced-pressure flash evaporation "stage" where some of the water flashes into steam. This steam is subsequently condensed into salt-free water. The residual salty liquid from that first stage is introduced into a second flash evaporation stage at a pressure lower than the first stage pressure.
Evaporation is the elimination of the solvent in form of vapor from a solution. For most evaporation systems, the solvent is water and the heat is provided by steam condensation. [4] In a forced circulation evaporation liquid is constantly circulated through the system.
The total evaporation in all the stages is up to approximately 85% of the water flowing through the system, depending on the range of temperatures used. With increasing temperature there are growing difficulties of scale formation and corrosion. 110-120 °C appears to be a maximum, although scale avoidance may require temperatures below 70 °C.
Condensing vapors from flash tank B1 heat evaporator A2. •1=feed •2=product •3=steam •4=vapors. In chemical engineering, a multiple-effect evaporator is an apparatus for efficiently using the heat from steam to evaporate water. [1] Water is boiled in a sequence of vessels, each held at a lower pressure than the last.
In Japan, a spray flash evaporation system was developed by Saga University. [2] In the U.S. state of Hawai'i, the Natural Energy Laboratory of Hawaii Authority tested an open-cycle OTEC plant with cogeneration of fresh water and electric energy, using a temperature difference of 20 °C (36 °F) between surface water and water at a depth of ...
Flash evaporation and other methods that use crucibles can deposit thick films. In order to deposit a material, the evaporation system must be able to vaporize it. This makes refractory materials such as tungsten hard to deposit by methods that do not use electron-beam heating. Electron-beam evaporation allows tight control of the evaporation rate.