The heat generated during the incineration of waste is used for power generation or heating, achieving the resource utilization of solid waste and the cyclic utilization of energy.
Translation: This project is jointly participated by DYDTEC Combustion and a large state-owned enterprise. After being put into operation, it has improved the standardization and safety of local medical waste disposal.
Medical Hazardous Waste Treatment Project
Providing supporting start-up combustion and auxiliary combustion systems, using British Speed Flame high-temperature burners TECFG125, TECFG185, and precise air-fuel ratio adjustment systems to achieve complete combustion.
The project adopts a counterflow rotary kiln. Each incineration line is equipped with 1 split-type burner at the kiln tail of the rotary kiln, and 2 split-type burners are equipped in the secondary combustion chamber, totaling 6 burners for the two incineration lines. The rotary kiln and secondary combustion chamber need to consider configuring corresponding fuel pipeline systems and supporting control systems.
Extremely low CO and NOX emissions. The combustion control strictly follows the international standards EN746-2 and NFPA86 to ensure the safety and stability of combustion.
The burner adopts a combination structure of diesel and waste liquid, with high and low calorific value waste liquids undergoing cracking and supplementary combustion respectively from the kiln head and the secondary combustion chamber.
Hazardous Waste Comprehensive Utilization and Disposal Incineration System Project
The Hazardous Waste Comprehensive Utilization and Disposal Incineration System Project uses a combination of rotary kiln and secondary combustion chamber to incinerate waste liquids, utilizing the high-temperature flue gas generated from combustion to produce superheated steam in waste heat boilers, in order to achieve the purpose of energy recycling.
Project requirements: The burner has a wide applicability and flexibility in handling materials, ensuring a combustion rate of ≥99.9%.
Fuel profile: The auxiliary fuel is light diesel, with a low calorific value of waste liquid of 0~3000kcal/kg, a flow rate of 1000kg/h, and a high calorific value of waste liquid of 3000~8000kcal/kg, with a flow rate of 1000kg/h, and a viscosity not exceeding 60cst.
The project uses the eternal flame to ignite the main gas of the drying furnace. When the temperature of the furnace chamber rises to above 850°C, waste gas and waste liquid are introduced according to the production situation.
Comprehensive Project for Energy Recovery and Utilization of Waste Gas and Waste Liquid
Natural gas + waste gas + waste liquid combined burner, using trace natural gas as an eternal flame, waste gas injection using a circular multi-nozzle structure, waste liquid injection using a dual-fluid medium atomizing nozzle, and the central setting of swirl blades for stable flame in the reflux zone. The burner nozzle is made of heat-resistant steel to extend the life of the burner.
In terms of emissions, FGR + fuel staging technology is used to keep the excess air coefficient away from α=1 while reducing flame local combustion temperature, achieving the suppression of NOx generation and creating a local reducing atmosphere, thereby reducing NOx emissions.
During project operation, the burner ignites successfully on the first attempt, with stable combustion. At rated conditions, the NOx content in the flue gas is 105-115mg/m3, and when combined with NSCR incinerator, it stabilizes below 100mg/m3.
