Evaporation characteristics of desulfurization wastewater in low-temperature three effect evaporation process

The evaporation characteristic of desulfurization wastewater is an important indicator for determining the process parameters of three effect evaporation. Through evaporation experiments，the relationship between the evaporation rate of desulfurization wastewater and the solid content，salt content and density of wastewater was studied，and the discharge concentration under the optimal operation state of the system was determined. The experimental results showed that low solid content of desulfurization wastewater was conducive to wastewater evaporation，solid particles in the wastewater could provide crystal seeds for salt crystallization，particle scouring reduces the risk of tube scaling，considering evaporation efficiency and reducing the risk of tube scaling，the recommended solid content of influent water was 4%.The evaporation rate of desulfurization wastewater decreases with the increase of salt concentration. Moreover，the higher the salt concentration was，the faster the evaporation rate decreased，which may