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| Frequently Asked Questions | ||
MVR EVAPORATION SYSTEMS
Yes, there is no high pressure area in the whole system and the evaporator vessel is well designed for vacuum application. 3. What are the basic needs for the MVR Evaporator?
The concentrate is pumped out from the evaporator in a liquid form. There are many options for final treatment. If the concentrate contains a valuable product, it can be reused in the process or sold to somebody else, who can use it. If it cannot be reused and has to be further concentrated, drying in Solar Drying Beds is a good solution, whenever available. Incineration in a solid fuel boiler can sometimes be used. Alternatively, it can be sent to a crystalliser followed by centrifuge for salt recovery. Windsor will be happy to include also a crystalliser in your evaporation system. 5. How reliable are MVR Evaporators? MVR Evaporators have been in operation for more than 50 years in food, paper and chemical industries for concentration applications. In large installations, where you have multiple independent units, this gives additional safety, as only one unit is down at a time. 6. For which kinds of effluents are you recommending your system? It is at its best when the effluent is rather dilute with respect to dissolved matter and the volumes are above 50 cu. m. per day. It can be used for almost any kind of effluent with a feed TDS of less than about 50,000 ppm. Good applications are found in the textile industry, metal industry, pulp and paper industry, chemical industry and many others. As all effluents are different, Windsor will evaluate the suitability of evaporation for the effluent based on a chemical analysis. 7. Do I need a permit to install the MVR Evaporation System? No. 8. What is the strongest point about your system? Zero -discharge, steam and corrosion, It has low scaling, easy pretreatment  , low
maintenance and substantial operating cost reduction. Simplified operation, as no
complex pre-treatment steps are needed. 9. What services are available from Windsor? Design, consultation, expert evaluation of the suitability based on chemical analysis, turnkey execution of the project. After sales services and troubleshooting during the lifetime of the installation. 10. What is the payback period can I expect from your system? The payback time depends on many factors, eg. cost of present or alternative treatment, raw water, power e.t.c. Compared with conventional multi effect evaporation systems the initial investment for a Windsor MVR-system can be more expensive. If corrosion is high, it may be cheaper. The additional cost can in favourable cases be recovered in less than 6 months when considering the operational expenses of both systems. For a capacity 250 cu.m./day, when compared with a multi effect (3 stages) evaporation system the operational savings can be approx. (INR) Rs. 3.25 Crores. (75000 $) per annum (based on an actual case). 11. How high can the clean water recovery be? Typical values are 80% to 99% based on the nature of feed. The diluter the feed is, the higher is normally the recovery. 12. Can you handle the complete system even after successful commissioning? Sure. Will be handled by our After Sales Service or O&M Service Department based on the nature of agreement. 13. How long has your MVR Evaporation System been around? Our type of MVR Evaporation system is relatively new (10 years) because we use the innovative Polymeric Heat Exchangers, which was invented very recently. 14. Are the parts and components of the Evaporation system readily available in the market? Yes. Except the polymeric heat exchangers which is our proprietary technology but is readily available for supply from Windsor. 15. What is the lifetime for the polymeric heat exchanger? We give a guarantee of one year. The expected life time is much longer. Replacement can be done very fast thanks to the modular design, and is not costly. Rigid parts can be reused. It could be compared to replacing a filter cloth in a filter. 16. How long will this MVR Evaporation System last in Service and Operation? We expect a minimum life time period of 20 years and maximum depends on the application, providing our maintenance instructions are followed. 17. How much maintenance is required? Not much, except for the regular checking and lubrication of rotating machinery and calibration of instrument etc. 18. How do I get a quote for Heat Exchangers and other parts and components of the MVR Evaporation System? You can get quote for all components and Heat Exchangers from Windsor. 19. How long will you take to complete and install an MVR Evaporation System? 3 to 6 months. 20. What are the major components of the MVR Evaporation System?  The main components of the MVR system are: vacuum vessel, evaporative heat transfer surface installed inside the vessel, vapour recompression fan and circulation pumps. POLYMERIC HEAT EXCHANGERS 1. Are the Heat Exchangers readily available? Yes. For further details please contact Windsor. 2. What is the maximum pressure range for the Heat Exchangers? The recommended pressure operation range is 40 millibar of differential pressure at 65°C. The replace pressure is much higher. 3. Can Heat Exchangers made out of stainless steel be used to help deter corrosion? Yes. But then our Polymeric Heat Exchangers are much more economical and durable compared with Stainless Steel Heat Exchangers. 4. What is it made of? It is a mix of various poly ethylens (contains only Carbon and Hydrogen) 5. Is this energy efficient? Yes , as large areas can be applied at low cost, leading to low energy consumption. 6. Does it pollute? No. 7. What about Scaling and Corrosion? Zero –Corrosion and Scaling is very minimal. 8. How much maintenance is required? Normally none. But it can be cleaned with pure water plus a suitable detergent or chemical whenever the plant is down for other reasons. The need depends on the nature of the wastewater. 9. What is the warranty on the Heat Exchanger? The Heat Exchangers is warranty for manufacturing defects for 1 year. 10. How important is it to ensure that a PHE is free of cracks or fractures? The Heat Exchangers are factory tested for all cracks and fractures and no test from the consumer side is necessary. 11. How often should I test a PHE? Refer previous question. 12. How does a plate heat exchanger work? Click here ( Link to benefits & features) 13. Are there different types of Polymeric Heat Exchangers? There is only one type of Polymeric Heat Exchangers which is the proprietary design of Windsor. 14. Can you recommend a cleaning method for plate heat exchangers? Will be provided along with the Operation Manual based on the type of Wastewater. 15. Do you offer heat exchangers in materials other than Polymer? Yes. For final Concentration and Crystallizers. Have other questions we haven't answered... Just Ask -Click here to email us your questions |