基于温和氧化的城市污泥-煤泥协同脱水及稳定清洁燃烧机理研究

山西省乃至全国大量煤泥和城市污泥处理面临前所未有的挑战，清洁燃烧技术是污泥-煤泥协同处理的优选方法。本项目提出基于温和氧化的增强脱水方法，实现污泥-煤泥协同高效脱水；针对污泥-煤泥耦合燃料的大差异、高水、高灰特性，构建大差异混合燃料DPVM双平行燃烧反应模型，更新高水分影响的着火判定指标（傅氏指数），构建高灰分对燃尽性能影响的灰壳效应耦合模型，建立高灰（矿物质）催化燃烧影响模型，完成污泥-煤泥-低热值煤等多组分耦合燃料化学反应动力学模型，揭示低热值耦合燃料强化燃烧机理与方法；探究污泥-煤泥耦合燃料燃烧过程中N/S等污染物的释放规律，揭示N/S迁移转化机理；研究污泥-煤泥耦合燃料燃烧过程中重金属释放特性，阐明污泥-煤泥中矿物组分对重金属的交互、迁移转化作用机制；采用流化床和煤粉炉两条技术路线，开展污泥-煤泥耦合燃烧全流程技术经济分析，为实现城市污泥-煤泥耦合燃料协同燃烧技术提供理论基础。

The treatment of the large amount of slime and municipal sewage sludge in Shanxi Province and even the country is facing unprecedented challenges. Clean combustion technology is the preferred method for sewage sludge-coal slime co-processing. This project proposes a method of enhanced dehydration based on mild oxidation to achieve synergistic high-efficiency dewatering of sewage sludge-coal slime coupled fuel; for the large difference, high water and high ash characteristics of sewage sludge-coal slime coupled fuel, the DPVM double parallel combustion reaction of large difference mixed fuel is constructed. Model, update the fire determination index (Fu's index) of high moisture impact, construct a gray shell effect coupling model of high ash impact on burnout performance, establish a high ash (mineral) catalytic combustion impact model, and complete the chemical reaction kinetics model of multi-component coupled fuels such as low calorific value coal, revealing the mechanism and method of enhanced combustion of low calorific value coupled fuels; exploring the release law of N/S pollutants during sewage sludge-coal slime coupled fuel combustion process, revealing N/ S migration and transformation mechanism; study the release characteristics of heavy metals in sewage sludge-coal slime coupled fuel combustion process, clarify the interaction mechanism of mineral to the migration and transformation of heavy metals in sewage sludge-coal slime coupled fuel; use fluidized bed and pulverized coal furnace technical route, carry out technical and economic analysis of sewage sludge-coal slime coupled fuel coupled combustion process, providing rationalization for the realization of municipal sewage sludge-coal slime coupled fuel co-combustion technology foundation.