Rotary Kiln Incineration Plant

Hazardous waste is a potential danger for our environment and our health if not treated appropriately. Some hazardous waste examples are solvents, aerosols, pesticides, oil sludges, varnishes, or medical waste from hospitals. Their treatment by incineration offers the advantage that organic, toxic substances are decomposed, and waste volume is highly reduced. Furthermore, energy can be recovered and steel recycled.

The rotary kiln has become the most common technology to incinerate hazardous waste, thanks to its high capacity (up to120 000 t/a) and versatility; rotary kilns can treat solid, pasty and liquid wastes all together. Typical dimensions are lengths of 5–15 m and diameters of 3–5 m.

Solid wastes reach the kiln through a feed chute in the stationary front wall. Auxiliary fuels, liquid, and pasty wastes are injected through different nozzles placed next to the chute. The kiln is slightly inclined (~3 %) and rotates with 0,05–0,7 rpm, resulting in a mean residence time of 30–90 min for solid waste. While travelling slowly through the kiln, wastes transform into gases and a solid/liquid inorganic combustion ash, called “bottom ash”. Combustion gases are treated in a secondary combustion chamber and neutralized through different gas cleaning devices.

The mean temperature at the rotary kiln lining’s hot face was measured to be 900–1000 °C in the inlet and outlet zones, and 1000–1200 °C in the combustion zone, However, these temperatures fluctuate due to varying waste inputs, which cause thermal shocks. In addition, the kiln rotation induces a thermal cycling, since the temperatures at the top of the kiln differs from the temperatures at the bottom by approx 300 °C.

Medical Waste Incineration Plant for Hazardous Was...

ROTARY KILN INCINERATORS are typically applied in the following KEY MARKETS:

• Medical and infectious waste incineration,
• Thermal desorption (soil cleaning),
• Hazardous waste incineration, including:
• Solid wastes,
• Sludge, slurries,
• Combustible liquids,
• Waste waters,
• High chlorinated hydrocarbons and PCB’s,
• Petrochemical wastes,
• Refinery wastes,
• Pharmaceutical wastes.

Hengyang Industry is an Chinese Company based in Zhengzhou city that manufactures, on proprietary technology, plants and equipment for waste recycling and recovery with energy production, material recovery or production of finished goods.

Innovation, R&D, passionate and skilled team along with the customer satisfaction have always been the success of Hengyang and they still are the peculiarities of our Company. Besides the historical Hengyang equipment, like single and double shafts shredders, Crushing machine, briquetting machines, separators, squeezers and centrifuges, the Company offers a wide range of turn-key plants, among which:

• briquetting and pelletizing plants
• shredding plants
• Waste Sorting Plants
• Bio-fuel Plants
• Waste to Power Recycling Plants
• Mining Plants
• OEM Equipments
……..
Hengyang is able to develop customized solutions too.
Designed, constructed and assembled by the same Hengyang

The Company policy focuses on product quality: robustness and functionality of the machines that maintain their value over time.
The ability to challenge ideas and concepts and to interact with partners worldwide has allowed and still allows Hengyang to stay highly competitive and to be an ideal partner for the world market.