Chlorine Corrosion in Rice Straw Biomass Boilers

Rice straw is an abundant and renewable biomass resource widely used as fuel in biomass boilers for sustainable energy generation. However, its relatively high chlorine content poses significant challenges in boiler operation due to chlorine-induced corrosion. This chapter reviews the mechanisms of chlorine corrosion in rice straw biomass boilers, highlighting how chlorine compounds formed during combustion interact with boiler metal surfaces, accelerating degradation and reducing equipment lifespan. The chemical composition of rice straw, particularly the presence of chlorine and alkali metals, contributes to the formation of corrosive deposits such as metal chlorides and hydrochloric acid. The chapter further discusses the impacts of chlorine corrosion on boiler performance, including increased maintenance costs and reduced efficiency. Methods for detecting and analyzing corrosion damage are examined, alongside strategies to mitigate corrosion through fuel pretreatment, material selection, and operational control. Understanding and addressing chlorine corrosion is critical to enhancing the reliability and sustainability of rice straw biomass boilers in energy production.