Rotary Kiln

High-quality incineration kiln supplier

Tongli incinerator is a rotary device specially used for high-temperature treatment of waste. Compared with rotary kilns, incineration rotary kiln are shorter and have higher temperatures. They are mainly used for metal refining (such as zinc oxide) and medical waste. They can reduce the volume of waste and eliminate pathogens and toxic substances. Waste is decomposed into simpler compounds or basic elements under high-temperature incineration at 800°C to 1200°C, usually producing carbon dioxide, water vapor, and ash. Tongli incinerators are usually equipped with tail gas treatment devices to purify harmful gases and particulate matter produced during the incineration process.

tongli heavy machinery incinerator rotary kiln main picture

TONGLI Incinerator

A MACHINE YOU CAN DEPEND ON!

Tongli uses the well-known brand Riello burner and optimized secondary combustion chamber to ensure incineration efficiency. The Riello burner provides a stable, high-temperature combustion environment, while the secondary combustion chamber design optimizes the airflow and temperature distribution to ensure that the material is fully burned and improve the overall incineration efficiency.

High Temperature Combustion Chamber

The incineration kiln is equipped with a high-temperature combustion chamber that can maintain a high temperature of 800°C to 1200°C to ensure complete combustion and decomposition of waste. Such high temperature conditions result in only 100 to 200 kilograms of ash produced per ton of waste incineration, significantly reducing waste volume and harmful substances.



Exhaust Gas Treatment Device

The incineration kiln is equipped with efficient exhaust gas treatment devices, such as bag dust collectors and desulfurization and denitrification systems, to reduce harmful gas and particulate matter emissions. The bag dust collector has a filtration efficiency of more than 99%, and the desulfurization and denitrification system can reduce SO₂ and NOx emissions by more than 90%, complying with environmental regulations.

Energy Saving Design

The energy-saving design of the incineration kiln significantly reduces energy consumption through a heat recovery system and efficient combustion technology. The heat recovery system can generate 500 to 700 kilowatt hours (kWh) of electricity for every ton of waste processed, and a plant that processes 500,000 tons of waste per year can generate about 300 million to 350 million kWh, saving external

xxxxxxxCapacity (t/h)Motor Model:Gearbox ModelInput Moisture (%)Fuel Coal Calorific Value (kcal)Output Moisture (%)
φ1.2x102.5-3M160M-6 → 7.5ZQ350Ⅱ-2525±5≥5500≤13
φ1.5x147-9Y180L-6 → 15ZQ400Ⅱ-31.525±5≥5500≤13
φ1.5x189.5-12Y180L-6 → 15ZQ400Ⅱ-31.527±5≥5500≤13
φ1.8x1412-15Y200L-6 → 18.5ZQ400Ⅱ-31.525±5≥5500≤13
φ1.8x1814-18Y200L1-6 → 18.5ZQ400Ⅱ-31.527±5≥5500≤13
φ2.0x1818-22Y200L2-6 → 22ZQ50Ⅱ-31.525±5≥5500≤13
φ2.0x2018-23Y200L2-6 → 22ZQ50Ⅱ-31.530±5≥5500≤13
φ2.2x1821-25Y200L2-6 → 22ZQ65Ⅱ-31.527±5≥5500≤13
φ2.2x2022-25Y225M-6 → 30ZQ65Ⅱ-31.530±5≥5500≤13
φ2.4x2025-29Y225M-6 → 30ZQ75Ⅱ-31.527±5≥5500≤13
φ2.4x2226-30Y225M-6 → 30ZQ75Ⅱ-31.530±5≥5500≤13
φ2.6x2028-33Y250M-6 → 37ZQ85Ⅱ-31.525±5≥5500≤13
φ2.6x2429-35Y250M-6 → 37ZQ85Ⅱ-31.530±5≥5500≤13
φ3.0x2045-50Y280S-6 → 45ZQ100Ⅱ-31.525±5≥5500≤13


FAQ

1. What is the difference between the working principle of incineration kiln and rotary kiln?

Incineration kiln is mainly used to treat solid, liquid or gaseous waste, especially hazardous waste. It completely decomposes the waste through high-temperature combustion. The processing capacity can reach hundreds of tons/day. It is often used for medical waste and industrial waste.

In contrast, rotary kiln is used for calcination and production of industrial raw materials such as cement clinker, lime, ore, etc., with a higher processing capacity of up to 10,000 tons/day, and is widely used in cement and metallurgical industries.

The temperature in the incineration kiln is usually maintained at 800°C to 1200°C to ensure complete combustion of waste and decomposition of harmful substances. Especially when used for incineration of hazardous waste, it is required to maintain sufficient residence time in the combustion chamber to achieve the effect of thorough oxidation and decomposition. Incineration kilns also need to accurately control the oxygen supply to ensure combustion efficiency and safety. The temperature control of rotary kilns varies according to the characteristics of the materials. For example, in cement production, the calcination temperature is usually around 1450°C.

The combustion process of the rotary kiln pays more attention to thermal efficiency and output, so its temperature management is relatively more complicated and needs to be adjusted by a precise control system.

2. What are the classifications of incineration kilns?

The rotary kiln incinerator is mainly used to treat hazardous waste and industrial solid waste, and it burns at high temperature and recovers heat energy through rotation. The fluidized bed incinerator is suitable for treating domestic garbage and sludge, with high combustion efficiency, low pollutant emissions, and small footprint.

Fixed bed incinerators treat solid waste such as waste tires and plastics, which is suitable for small-scale treatment, but the combustion efficiency is low. Plasma incinerators are used for high-temperature decomposition of highly toxic wastes, with almost no harmful residues, and are suitable for treating difficult-to-degrade industrial and medical wastes.

3. How to choose a suitable incinerator

When choosing a suitable incinerator, the incineration temperature and treatment process should be determined according to the type of waste to be treated, such as industrial waste, medical waste, etc. Secondly, the size of the treatment volume directly affects the specifications and design of the incinerator. Larger treatment volumes require large or multi-stage equipment.

In addition, the incinerator must comply with local environmental protection standards and be equipped with an efficient tail gas treatment system to reduce pollutant emissions. Finally, energy-saving design and heat recovery systems can improve energy efficiency, reduce operating costs, and maximize energy utilization.

4. How are incinerators better than traditional MSW landfills?

When treating waste, incinerators use high-temperature combustion to quickly decompose organic waste into ash and gas, reducing the volume of waste by more than 90%, and the treatment speed is much faster than traditional landfills, which take decades to degrade naturally. Although incinerators can effectively eliminate pathogens and toxic substances during high-temperature treatment, if the tail gas is not properly treated, harmful gases such as dioxins and acid gases may be produced. Modern incinerators are equipped with advanced tail gas treatment devices to reduce emission hazards. The landfill method may cause leachate to contaminate groundwater and release greenhouse gases such as methane, posing a long-term threat to the environment.

The advantages of incinerators are also reflected in their greatly reduced waste volume. Only 100 to 200 kilograms of ash are produced after each ton of waste is treated, which significantly reduces the demand for land. In contrast, the landfill method requires a large amount of land, especially in densely populated urban areas. In terms of cost, the construction and operation costs of incinerators are high, but recovering some energy through power generation or heating can offset some of the costs in the long run. The landfill method has a low initial construction cost, but the subsequent maintenance and environmental remediation costs are high, especially when dealing with leachate and gas, which requires long-term management.

5. What are the ways to recover the heat energy of the incinerator?

The heat recovery of the incinerator usually adopts a steam generation system. In this system, the hot gases generated by incineration are passed through a heat exchanger (such as a boiler) to heat water or other liquids to generate high-pressure steam. The generated steam can be used to drive a steam turbine to generate electricity or provide heat energy required for industrial production. The heat exchanger is the core equipment for heat recovery. It transfers the heat in the exhaust gas to water or other cooling media through heat conduction to generate steam or hot water. Common types of heat exchangers include shell and tube heat exchangers and plate heat exchangers. Waste heat boilers are used to recover the heat of high-temperature flue gas in the incineration kiln.

The flue gas is preheated before entering the boiler, and the heat of the flue gas is used to heat the water into steam. Waste heat boilers can achieve efficient heat recovery and convert it into usable heat energy or electricity. The recovered heat energy can be used in power generation systems. The heat energy drives a steam turbine or steam turbine generator to convert heat energy into electricity. This not only improves the energy efficiency of the incineration process, but also provides power for industry or cities and reduces energy costs.

In addition to power generation, the heat energy generated by the incineration kiln can also be used to supply hot water for industrial production, heating or other needs. This method is often used to provide hot water and heating, which improves the efficiency of heat energy utilization.

6. Which metals can be extracted by incineration kilns?

Incineration kilns can extract a variety of valuable metals when processing waste. Copper is commonly found in cables and electronic products. Copper can be separated from waste by high-temperature combustion to form copper alloys or copper residues. Aluminum is commonly found in beverage cans, food packaging and industrial waste. The incineration process can effectively extract aluminum to form aluminum alloys or aluminum residues.

Iron is commonly found in old home appliances and steel manufacturing residues. Iron can be separated during incineration to form iron alloys or iron slag. Zinc is found in batteries and coating materials. The incineration process can extract zinc to form zinc residues or zinc alloys. Tin may be found in electronic products and packaging materials. High-temperature incineration can extract tin to form tin alloys or tin residues. Nickel is commonly found in stainless steel and alloy materials. Nickel can be separated by incineration to form nickel alloys or nickel residues. Cobalt is mainly found in batteries and certain alloy materials. Incineration kilns can extract cobalt under high temperature conditions to form cobalt residues or cobalt alloys.

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Hazardous waste, such as chemical byproducts, is safely burned in specialized kilns to neutralize toxins.

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Industrial sludge from manufacturing processes is incinerated to reduce volume and remove contaminants.

MSW

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Municipal Solid Waste MSW includes household trash and non-recyclable materials that are incinerated for energy recovery.

Medical Waste

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Medical waste, including syringes and pharmaceuticals, is safely incinerated to prevent disease transmission.

Biomass

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Biomass, such as wood chips or agricultural residues, can be burned for sustainable energy production in kilns.

Tire Derived Fuel (TDF)

Tire Derived Fuel (TDF)

TDF, made from shredded tires, serves as a high-calorific material in cement kilns, reducing fossil fuel use.

Wood Waste

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Wood waste, like sawdust and scrap timber, is often incinerated for energy recovery in industrial processes.

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Often unrecyclable, can be incinerated in kilns to recover energy and reduce landfill burden.

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