Cement kiln flue gas dry desulfurization method based on iron-manganese modified red mud

• Main Authors: LAN MINGZHANG, CUI SUPING, XU HAIYING, HELIAN YIZHE, WANG YALI
• Format: Patent
• Language: Chinese; English
• Published: 31.12.2021
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses a cement kiln flue gas dry desulfurization method based on iron-manganese modified red mud, and belongs to the technical field of industrial flue gas pollutant control. According to the method, on the basis that the alkalinity of the red mud is not changed, sodium and potassium ions which have adverse effects on cement performance in the red mud are replaced through a hydration method, the desulfurization rate of the desulfurizer prepared after iron and manganese hydration modification is improved, and the decomposition rate of desulfurization products is reduced. According to the manganese acetate-red mud modified desulfurizer, the desulfurization rate can reach 93% at the temperature of 600 DEG C and the O2 content of 2%, and the decomposition rate of a desulfurization product is 2.88%. When the modified red mud is applied to cement kiln flue gas desulfurization, the flue gas desulfurization efficiency of the red mud can be further improved, the decomposition of desulfurization produ