zozen boiler
Home Service FAQs Boiler basics What are the reasons for the rising temperature of boiler exhaust gas?

What are the reasons for the rising temperature of boiler exhaust gas?

29 Oct 2021
  1. Coking and dust accumulation on heating surface. Whether it is slagging and ash deposition on the water wall of the furnace or ash deposition on the superheater, convection tube bundle, economizer and preheater, the measured thermal resistance of flue gas will increase, and the deterioration of heat transfer will worsen the cooling effect of flue gas, resulting in an increase in the temperature of boiler waste gas.
  2. The excessive air coefficient. Under normal circumstances, with the increase of excess air coefficient at furnace outlet, the temperature of boiler exhaust gas increases.
  3. Excessive air leakage coefficient. Air leakage refers to furnace air leakage and flue air leakage, which is one of the main reasons for the temperature rise of boiler exhaust gas.
  4. Feed water temperature is too high. The heat transfer temperature difference between flue gas temperature and water temperature is small, which makes the temperature of boiler exhaust gas rise correspondingly.
Related news View More
  • ZOZEN Boiler to Exhibit at PALMEX JAKARTA 2026
    From May 6 to 7, 2026, ZOZEN Boiler will participate in Palmex Indonesia 2026 at Jakarta International Expo (JIEXPO), Indonesia. ZOZEN Boiler will welcome visitors at Booth 190 & 192. As an industry event focused on the palm oil sector in Southeast Asia, the exhibition brings together companies involved in palm oil processing, supporting energy systems, and industrial equipment, offering ZOZEN Boiler a valuable opportunity to meet customers from Indonesia and surrounding markets. ZOZEN Bo...
    28 Apr 2026
  • Bangladesh’s Textile Industry Continues to Grow, with Greater Focus on Fuel Adaptability and Operating Costs in Steam Boiler Configuration
    Bangladesh is one of the world’s major producers and exporters of garments and textiles. With a well-developed industrial chain covering textile, dyeing, printing, and garment manufacturing, long-term demand for industrial steam remains strong. In production processes such as dyeing, washing, drying, and finishing, steam boilers play an important role in ensuring stable heat supply. As local textile enterprises place greater emphasis on energy consumption control, fuel utilization, and ope...
    21 Apr 2026
  • ZOZEN Reciprocating Grate Biomass Steam Boilers Support Textile Projects in Pakistan
    In Pakistan, garment manufacturing and fabric processing remain important parts of industrial production. For these factories, steam is not an auxiliary utility but a core part of the production chain. Processes such as dyeing, drying, heat setting, and finishing all require a stable and continuous steam supply. Any fluctuation in steam output may affect production rhythm. Against this background, more textile companies in Pakistan are paying closer attention to fuel adaptability, operating sta...
    14 Apr 2026

Find the Right Boiler For You

Name *

Email *

WhatsApp/WeChat

Products

Power/Capacity