生物质直燃发电是生物质能规模化利用的主要技术之一，生物质锅炉燃烧产生的气相KCl会导致过热器严重积灰腐蚀，另外，随着火电厂大气污染物排放新标准的实施，NOx、SO2等污染物将受到更严格的排放控制。基于解决KCl沉积腐蚀联合控制污染物排放的理念，本项目拟对生物质燃烧产生的气相KCl/HCl/NOx/SO2一体化协同脱除特性与机理进行研究，采用磷酸铵盐将KCl转化为低腐蚀性的磷酸盐和HCl，氨基兼顾还原NOx；探索气相碱金属化合物、铁基添加剂、乙醇等对三聚氰酸在低于850℃的选择性非催化脱硝的影响及特性；探索电石渣等钙基废弃物脱除HCl/SO2特性，揭示脱除反应规律与机理；基于反应温度、反应气氛和反应过程，确立协同脱除条件。本项目的研究可促进燃烧中碱金属氯盐、重金属氯盐以及硫氮污染物控制理论的发展，为生物质、垃圾、污泥等燃烧产生的类似污染物的控制提供理论基础和技术指导。

Biomass direct combustion for power generation is one of the main technologies in large-scale use of biomass energy. However, gaseous potassium chloride can result in serious ash deposition and superheater corrosion in biomass fired boilers. In addition, with the implementation of new Emission Standard of Air Pollutants for Thermal Power Plants, emission of nitrogen oxides, sulfur dioxide and other pollutants will be controlled more strictly. The integrated synergic removal characteristics and mechanism of gaseous potassium chloride, hydrogen chloride, nitrogen oxides and sulfur dioxide from biomass combustion will be studied in the project, with the purpose of solving ash deposition and corrosion problems caused by potassium chloride as well as simultaneous control of pollutants. Ammonium phosphate will be used to convert potassium chloride to low corrosive phosphate and hydrogen chloride. At the same time, amidogen in ammonium phosphate can play a reduction role of nitrogen oxides. Effect and characteristic of gaseous alkali compounds, iron-based additives and ethanol on selective non-catalytic reduction of NOx below 850 ℃ will be explored. Removal characteristics and mechanism of carbide slag as well as other calcium-based waste on hydrogen chloride and sulfur dioxide will also be researched. The appropriate conditions will be determined based on reaction temperature, reaction atmosphere and reaction process. The research can promote the development of control theory of alkali metal chloride, heavy metal chloride, as well as sulfur and nitrogen containing pollutants. It can also provide a theoretical foundation and technical guidance for control of related pollutants in the combustion process of biomass, waste, sludge, etc.