基于污泥干化-预处理一体化的水泥窑协同处置工艺提升方法

打开文本图片集

引用格式：. 基于污泥干化-预处理一体化的水泥窑协同处置工艺提升方法[J]. 当代化工，2026, 55（4）：789-794.

ZHANG Shuo. An Improvement Method for Cement Kiln Co-processing Technology Based on the Integration of Sludge Drying and Pretreatment[J]. Contemporary Chemical Industry, 2026, 55(4): 789-794.

中图分类号：TQ016

文献标志码：A

文章编号：1671-0460（2026）04-0789-06

An Improvement Method for Cement Kiln Co-processing Technology Based on the Integration of Sludge Drying and Pretreatment

ZHANG Shuo

(Beijing Jinyu Mangrove Environmental Technology Co., Ltd., Beijing , China)

Abstract: A systematic study of an integrated sludge drying and pretreatment process was conducted in the context of cement kiln co-processing. By setting different temperature and time conditions, the sludge moisture content variation and drying kinetics were characterized; a thermogravimetric-differential scanning calorimeter was used to investigate the significant degradation behavior of organic matter at 150 – 520 °C; co-sintering experiments were carried out in an experimental rotary kiln, and an environmental benefit analysis was conducted. The results showed that 120 °C was the optimal temperature for both energy efficiency and efficiency. The occurrence states of heavy metals gradually transformed from active forms to residual forms, which significantly improved combustion adaptability and environmental safety. When the addition ratio (mass fraction, the same below) did not exceed 15%, the heat consumption for clinker sintering decreased by approximately 10%, the heat utilization rate increased to more than 57%, the 28-day compressive strength of cement remained above 50 MPa, and both the heat balance of the kiln system and the product quality were guaranteed. This process reduced CO₂ emissions by approximately 9%, NOₓ emissions by approximately 8%, and lead leaching mass concentration by nearly 30%, achieving synergistic effects of carbon reduction, pollutant control, and heavy metal fixation.

Keywords: Sludge; Pretreatment; Measurement; Cement kiln co-processing; Optimization; Energy efficiency; Environmental benefits

污泥资源化与减量化处置已成为全球环境工程领域的重要课题[1-3]。（剩余15416字）