Desulfurization wastewater separation and purification system

• Main Authors: WANG HONGJUN, JI HONGWEI, GUO FANGYING, ZHU YUNZHANG, WANG YAN
• Format: Patent
• Language: Chinese; English
• Published: 14.12.2018
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a desulfurization wastewater separation and purification system. The system comprises a preheater, a double-effect evaporator, a double-effect separator, a one-effect evaporator, a one-effect separator, a first solid-liquid separator, a cooling crystallizer and a second solid-liquid separator. According to the desulfurization wastewater separation and purification system, NaBr and Na2SO4 can be obtained by double-effect countercurrent evaporation and purification, and the purity and recovery rate are high. Moreover, according to the system, the desulfurization waste solution serves as the raw material, the raw material cost is avoided, and any other additive or catalyst does not need to be added in the production process. Furthermore, the liquid produced in the extraction process can be recycled in the system, three wastes are not produced, and the environmental pollution is slight. 本发明公开了脱硫废水的分离提纯系统。该系统包括：预热器、二效蒸发器、二效分离器、效蒸发器、效分离器、第固液分离器、冷却结晶罐和第二固液分离器。该脱硫废水的分离提纯系统不仅通过逆流双效蒸发处理提纯得到NaBr和