Product Brief
Waste Incineration WHB
Waste incineration WHB is the key piece of equipment for efficient waste heat recovery from the WTE system and the core equipment for operational safety, energy saving and environmental protection during waste incineration.
The waste incineration WHB that was independently developed by ENFI has the advantages of large treatment capacity, high thermal efficiency and improved parameters. At present, the 4.0MPa and 450°C WHB has been under safe operation and the 6.4MPa and 440°C boiler will be brought into operation soon. Boiler capacity is increased by more than 20% and steam power generation efficiency is increased by 2% to 4%.
The waste incineration WHB that was independently developed by ENFI has the advantages of large treatment capacity, high thermal efficiency and improved parameters. At present, the 4.0MPa and 450°C WHB has been under safe operation and the 6.4MPa and 440°C boiler will be brought into operation soon. Boiler capacity is increased by more than 20% and steam power generation efficiency is increased by 2% to 4%.
Specification & Series：Incineration grate furnace type: R-shaped grate, L-shaped grate, , reversing pushing grate, pusher type grate, etc. that are manufactured by various well-known grate manufacturers;
Boiler furnace type: vertical type, horizontal type and Ⅱ type- Processing Capacity：Incinerator scale: 300t/d, 400t/d, 500t/d, 600t/d, 750t/d, 1000t/d;
Steam parameters: steam pressure 4.0~6.5MPa, steam temperature 400~485°C. - Application Fields：Waste incineration WHB can be applied to solid waste treatment facilities with waste incineration as the core in the field of environmental protection, such as domestic waste incineration power plant, waste incineration plant mixed with sludge, venous industrial park, etc., and can also be applied to biomass power plants in the field of new energy.
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Advantages & Features
- High heat efficiency and economic efficiency
Compared with medium temperature and pressure WHB, the WTE system using high-parameter WHB with steam reheat technology can increase plant-wide thermal efficiency from 21% to 30%. By using WHB of medium temperature and pressure, 450kWh/t of power can be generated per ton of waste incinerated, while the WHB of high parameters with reheat system can generate more than 600kWh/t, increasing power sales income. - Flexible with supporting furnace types and wide application.
It can match all kinds of typical grates at home and abroad to form a complete set of WTE system and produces steam at various required parameters according to demand. - Reliable ash removal method for the improvement of power generation parameters.Flexible with supporting furnace types and wide application.
It can match all kinds of typical grates at home and abroad to form a complete set of WTE system and produces steam at various required parameters according to demand. - Patent mechanical rapping ash removal device is provided for the boiler, which protects the boiler from corrosion by high viscosity and highly corrosive metallurgical off-gas, improving stream parameters.
- Highly automated, safe and reliable.
Working Principle
In view of the unstable characteristics of solid waste, the natural recycling waste heat boiler is used for solid waste incineration. The unbalanced force generated by the density difference between the water in the unheated down tube and the water in the heated up tube promotes the upward flow of the water mixture to form a circulation. The unbalanced force generated by the density difference between the water in the unheated downcomer and the steam-water-mixture in the single-sided heated riser is used to push the steam-water-mixture upward to form a circulation. The waste heat boiler has a furnace built with refractory bricks, and a tube bundle is installed in the furnace. High-temperature flue gas passes through the furnace and convection heating surface to heat and vaporize the water flowing in the tube bundle.
Technical Parameters
| Name | Parameter |
|---|---|
| Incinerator waste disposal capacity | 300-1000t/d |
| Boiler rated steam capacity | 35-100t/h |
| Boiler rated steam pressure | 4.0-6.5MPa |
| Boiler rated steam temperature | 400-485°C |
| Boiler feed water temperature | 130°C |
| Boiler exhaust gas temperature | 190-220°C |
| Garbage calorific value | 4000-9000kJ/kg |
| Boiler Design Thermal Efficiency | 81-83% |
| Boiler body weight | 1200-1600t |
The Application Achievements
Ganzhou WTE Plant Jiangxi Province
Project operation life is 30 years (including construction period) and waste treatment capacity reaches 1,200t/d after ramp up. The project was up and run in 2019.
Project operation life is 30 years (including construction period) and waste treatment capacity reaches 1,200t/d after ramp up. The project was up and run in 2019.
Xiangyang Domestic WTE Plant
It is an EPC project undertaken by China ENFI. Technical modification construction will take 18 months (including commissioning) and overall plant capacity will reach 1,600t/d after ramp up. Its Phase I and II have been in operation since March 2012 and its technical modification is in progress.
It is an EPC project undertaken by China ENFI. Technical modification construction will take 18 months (including commissioning) and overall plant capacity will reach 1,600t/d after ramp up. Its Phase I and II have been in operation since March 2012 and its technical modification is in progress.
Gu’an WTE Plant
Project operational life is 30 years (including construction period) and waste treatment capacity will reach 1,800t/d after ramp up. The project is under construction.
Project operational life is 30 years (including construction period) and waste treatment capacity will reach 1,800t/d after ramp up. The project is under construction.
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