Pre-treatment with 6-12% sodium chloride or sodium sulfate! ! ! ! !
Thread Content
There is already 1 MVR with a capacity of 1 T/h. To reduce operating costs, it is intended to increase the concentration of sodium chloride or sodium sulfate to 6–12% before feeding it into the MVR for evaporation and crystallization. Are there any cost-effective devices that can achieve this? For example, 1 ton of material containing 6-12% sodium chloride or sodium sulfate passes through this equipment and becomes 0.5 tons of a solution containing 12-24% sodium chloride or sodium sulfate, which then enters the MVR. The remaining 0.5 tons turns into water that can be discharged directly. Processing capacity is 1 T/h. Thank you
The processing cost of MVR is already quite low! !
During the initial stage of operating the MVR, it’s possible to preheat the material first; once it reaches the boiling point, it can go straight into the evaporator for evaporation. One ton can be processed quite quickly, and by reducing the operation time, operational costs are saved
The salt concentration here is already very high. The existing technologies, including high-pressure membranes and osmotic pressure processes, are only capable of handling levels up to this point; the investment cost for such equipment is high, and there isn’t much room for cost savings. Therefore, it’s not necessary – it’s better to use MVR instead
Can processes such as diaphragm separation, EDI, and electrodialysis achieve a salt concentration of 20%?
Hey rich guy, even for a evaporation rate of 1 ton, you still use MVR evaporation – it’s similar to my prototype; there won’t be any significant savings in operating costs as a result
This is the pilot-scale MVR1T.2000T unit, designed to prepare the way for the 2WT units that will follow! !
It is entirely feasible; I recommend considering ultra-high-pressure reverse osmosis with a pressure of 160 kilograms – we can discuss this in more detail
It is also very difficult for DTRO to achieve such high concentrations; currently, only electrodialysis can reach 15%-20%, and the cost per unit is not low. Those interested can get in touch with me
Isn’t MVR popular in recent years precisely because it offers energy savings compared to traditional multi-effect evaporation? If you’re looking for another process that provides a better cost-performance ratio for concentration enhancement, then why use MVR at all? Isn’t that completely unnecessary?