Overview
Low-temperature denitration additives are catalytic or chemical agents designed to improve nitrogen oxide (NOx) removal efficiency in selective catalytic reduction (SCR) or non-catalytic reduction (SNCR) systems operating at temperatures below 300°C. They address the growing need for cost-effective flue gas treatment in industries facing stricter emissions regulations. These additives typically contain active components like vanadium, tungsten, or urea derivatives, which facilitate NOx reduction reactions at lower energy inputs. Their development stems from the demand to retrofit older plants without high-temperature SCR units, reducing operational costs while meeting environmental standards.
Physical and Chemical Properties
Physical properties vary by formulation but generally include high thermal stability within the 150-300°C range and adjustable solubility for injection systems. Powdered variants dominate the market due to easier storage and handling, though liquid formulations exist for specific applications. Chemically, these additives act as reaction promoters, lowering the activation energy for NOx reduction. They are often alkaline to neutralize acidic byproducts and may include oxidants to convert NO to NO2 for improved reactivity. Compatibility with fly ash and sulfur oxides is a critical performance metric, requiring tailored compositions for different flue gas conditions.
Main Applications
Primary applications include coal-fired power plants retrofitted with low-dust SCR systems, where these additives boost NOx conversion rates by 15-30% compared to standard catalysts. Cement and glass manufacturing industries also utilize them to comply with regional emissions caps without costly furnace modifications. In waste-to-energy plants, the additives help manage fluctuating gas temperatures and compositions. Recent innovations target marine diesel engines and chemical process heaters, expanding their role in decentralized emission control systems. Performance is typically measured by NOx reduction efficiency (targeting 85%+) and ammonia slip prevention.
Safety and Storage
Most commercial additives are classified as non-hazardous under normal handling conditions, though dust masks and gloves are recommended during bulk transfer. Storage requires protection from moisture (for powdered forms) and freezing (for liquid concentrates), with typical shelf lives of 12-24 months in sealed containers. Spill management follows standard industrial chemical protocols—containment with inert absorbents for solids and neutralization for liquids. Disposal should comply with local regulations, as some formulations may contain heavy metal traces. Suppliers provide Material Safety Data Sheets (MSDS) with batch-specific handling guidelines.
B2B Procurement Guide
Procurement should prioritize suppliers with proven track records in your industry segment, as additive performance varies significantly with flue gas composition. Key evaluation criteria include: temperature range validation (request test reports for your operating conditions), compatibility with existing SCR/SNCR equipment, and documented case studies. Bulk purchases (10+ tons) typically offer 8-12% cost savings, but pilot testing with smaller batches (1-2 tons) is advisable for new implementations. Contract terms should address performance guarantees, such as minimum NOx reduction thresholds, and technical support for dosage optimization. Leading manufacturers in China offer customized formulations for high-sulfur or high-ash flue gases.
Related Manufacturers
- 主营：氨基磺酸、亚氯酸钠、速凝剂、脱硝剂、氨水、液碱、乙醇、次氯酸钠、无水乙醇、草酸、漂白粉、漂粉精、碳酸氢铵、亚硫酸氢钠、二甲基亚砜、二甲基甲酰胺、硼酸、大苏打、冰醋酸、柠檬酸
- 主营：缓蚀阻垢剂、杀菌灭藻剂、反渗透阻垢剂、脱硝剂、反渗透杀菌剂、臭味剂、消泡剂、锅炉除垢剂、脱硫增效剂、复合碳源、反渗透清洗剂、反渗透絮凝剂、锅炉除氧剂、锅炉除焦剂、保温装饰一体板
- 主营：异丙醇、冰醋酸、化工原料、脱硫脱硝、正庚烷、甲基环己烷、乙二醇、苯酚、江苏异丙醇、江苏化工原料、工业吡啶、工业苯酚、正丁醇、MIBK、无水乙醇、正己烷
- 主营：保温装饰一体板、缓蚀阻垢剂、杀菌灭藻剂、脱硝剂、锅炉除垢剂、反渗透阻垢剂、反渗透杀菌剂、反渗透还原剂、反渗透清洗剂、脱硫增效剂、抑尘剂、臭味剂、中央空调清洗剂、锅炉除焦剂、锅炉清灰剂、锅炉除氧剂
- 主营：杀菌剂、乳化剂、钝化剂、脱硫脱硝剂、钝化膏、防腐剂、除菌剂、除藻剂、除垢剂、灭藻剂、清洗剂、阻垢剂、抑垢剂、缓蚀剂、粘泥剥离剂、去除剂、消泡剂、抑尘剂、复合碳源、助凝剂、除磷剂、一水柠檬酸、脱销剂、还原剂、絮凝剂
- 主营：阻垢剂、增效剂、缓蚀阻垢剂、添加剂、杀菌灭藻剂、脱硫增效剂、抑尘剂、脱硫消泡剂
- 主营：工业级小苏打、精制工业盐、工业盐、脱硝剂、低温脱硝设备、低温脱硝剂、融雪剂、小白盐
- 主营：脱硝剂、低温脱硝剂、高分子脱硝剂、液体脱硝剂、黄烟去除剂
- 主营：纯碱、精制工业盐、碳酸氢钠 小苏打、添加剂、硫代硫酸钠 大苏打、葡萄糖、乙二醇、丙二醇、复合草酸除垢剂、聚丙烯酰胺 PAN、聚合氯化铝 PAC、草酸、硫酸亚铁、硫酸钠 元明粉、DL-酒石酸、酒石酸钾钠、聚合硫酸铁、苯甲酸、苯甲酸钠、柠檬酸、柠檬酸钠、水玻璃、氯化钙、复合碳源、氯化铵、硼砂
- 主营：杀菌剂、除磷剂、消毒剂、脱硝剂、柠檬酸、絮凝剂、污水处、还原剂、清灰剂、催化剂、复合碳源、除尘剂、消泡剂、助燃剂、抑尘剂、除垢剂、灭藻剂、清洗剂、阻垢剂、降解剂、缓蚀剂、脱硫剂、除焦剂、螯合剂