What is the effectiveness of using an MVR system for evaporation and crystallization of the concentrated water from coking plants after advanced treatment?
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This post was last edited by dmz329227 on 2018-3-1 09:27. The concentrated wastewater from a coking plant, with a flow rate of 10 t/h, a salt content of around 4-5%, and a TDS level of 66,000, first passes through an MVR evaporation system for concentration; afterward, it is fed into an MVR evaporation-crystallization system for further crystallization. It’s unclear what the results of this approach will be Could friends with similar experience please share their insights? What are the results and the investment required? If this technology is to be used, is there anything essential?
No problem, that’s usually how it’s handled. Equipment investment is very high. Let the manufacturer calculate the specific cost.
This post was last edited by dmz329227 on 2018-3-1 09:27. Operating costs for evaporating each ton of concentrated water: Electricity consumption: 45 kW·h (of which 35 kW·h is used by the compressor)； Steam consumption: <50kg. Based on an evaporation rate of 10,000 kg/h and 8,000 hours of operation per year. (The cost of steam is 150 yuan per ton, electricity costs 0.7 yuan per kilowatt-hour, and cooling water costs 0.2 yuan per ton.) Electricity cost: (450 kW of power consumption per hour) Electricity cost = 450 × 0.7 × 0.8 = 2.52 million yuan per year. Steam cost: (50 kilograms of raw steam are consumed for every ton of water evaporated) Steam cost = 10 × 50 ÷ 1000 × 150 × 0.8 = 600,000 yuan per year. Cooling water cost: (0.2 yuan per ton of cooling water) Cooling water cost = 60 × 0.2 × 0.8 = 96,000 yuan per year. Total MVR cost = 2.52 + 600,000 + 96,000 = 3.216 million yuan per year. Is this calculation accurate?
Are there any successful cases of evaporative crystallization for coking wastewater?
What is the COD of the incoming water? To what extent is it required? Is salt and nitrate separation needed? We have carried out related treatment of coal chemical wastewater at Shenhua Ningmei and Inner Mongolia Yili Resources; let’s see if we can assist you. 15813739005
In the MVR process, pre-concentration followed by FC crystallization is a common approach that helps to minimize the energy consumption and costs associated with evaporation
It is necessary to check the COD content; it is best to conduct a water sample test first
Energy conservation can be calculated by oneself; in addition, heat loss and equipment depreciation also need to be taken into account