Desulfurization wastewater drying treatment system and technological process

• Main Authors: WANG YIHAO, WANG HONGLIANG, BU PAN, SUN SONG, LI JIPENG
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2023
• Subjects: BLASTING; CHEMISTRY; COMBUSTION APPARATUS; COMBUSTION PROCESSES; FLUES; HEATING; LIGHTING; MECHANICAL ENGINEERING; METALLURGY; REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTIONRESIDUES; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WEAPONS

According to the desulfurization wastewater drying treatment system and the technological process, high-temperature hot flue gas at an outlet of a boiler induced draft fan is subjected to dust removal and enters an evaporator coil pipe for heat exchange to achieve salt water concentration, temperature rise in an evaporator is achieved in cooperation with an air door, the crystallization temperature requirement is met, and steam-solid separation is conducted through a concentrated solution direct injection high-temperature air flue; and then the gas enters a dryer for gas-solid high-temperature cyclone separation. The system is more reasonable in arrangement, lower in maintenance cost, wider in finished product production applicability and higher in economic benefit, and particularly prevents the chloride crystal salt from polluting the ash, so that the ash and the chloride crystal salt can be respectively collected and utilized. 一种干燥处理脱硫废水系统与工艺流程，采用锅炉引风机出口的高温热烟气，经除尘进入蒸发器盘管换热实现盐水浓缩，并配合风门实现蒸发器内升温并达到结晶温度要求，通过浓缩液