Process and agent method for removing chloride ions in wet desulfurization and denitrification gypsum of thermal power plant

• Main Author: ZHANG YUESHAN
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2021
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A thermal power plant produces a byproduct desulfurized gypsum substance in the process of treating flue gas desulfurization and denitration of a coal-fired boiler, the amount is large, the desulfurized gypsum substance is accumulated and stored in the open air, a large amount of land is occupied, secondary pollution is caused to the environment, and currently, paving and ditch filling are adopted, so that resources are wasted. There is a great difference in utilization compared to western countries and advanced countries such as America, Germany, Japan and Britain. In the western countries, factories are built in producing areas to produce gypsum boards and cutting bricks. However, there is no large-area development in our country so far, and even if a small number of gypsum board manufacturers exist, the manufacturers stop production and are closed due to product quality problems caused by high content of chloride ions in gypsum. The technology in a process and an agent method for removing the chloride ions