摘要
The key technologies for high energy efficiency and low emission of industrial furnaces can effectively improve the energy utilization efficiency and reduce pollutant emissions. In this paper, the research of common key technologies for energy conservation and emission reduction in industrial furnaces were reviewed, such as energy-saving management and waste heat utilization, oxygen-enriched calcination, staged combustion, particle separation and resource utilization, and their integrated applications in 2 500-5 000 t/d cement kilns. Based on the matching relationship between the material and energy flow of industrial furnaces, the design of an energy-saving management platform was carried out. New energy-saving technologies for optimization and reorganization of energy flow in cement kilns were developed to meet the requirements of multiple types process goals. The industrial demonstration of the energy-saving management platform matching the material and energy flow in cement kilns has been implemented. The oxygen-enriched calcination technologies in cement kilns was developed by organically combining low-energy pressure-swing-adsorption and cement clinker calcination, which can meet the wide threshold variation in production of product category and output quality, and their industrial demonstrations was carried out.In view of the problems of high emissions such as NOx and SOx, the stage combustion and SNCR denitration technologies in decomposition furnace were comprehensively optimized. The industrial demonstration of the technologies for the staged combustion and SNCR optimized denitrificationin cement decomposition furnace has been conducted. Aiming at emission reduction and resource utilization, the new technologies for particulate emissions purification, separation and reuse in deep cooling and dust removal of flue gas have been proposed. The industrial demonstration of efficient separation and clean utilization of gas-solid emissions in industrial furnaces has been put into effect. The clean emission and resource utilization of particulate matter have been realized.
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单位中国科学院大学; 高温气体动力学国家重点实验室