Cyclone Preheater
The cyclone preheater uses the suspension preheating method to preheat the limestone using the high-temperature exhaust gas discharged from the kiln tail and the high-temperature flue gas generated by the combustion at the bottom of the decomposition furnace. The production capacity can reach 280~2500 t/d.
Cyclone Preheater for Sale
The cyclone preheater, also known as limestone preheater, is one of the equipment to effectively reduce energy consumption in limestone calcination. The production capacity can be 280~2500 t/d. The cyclone preheater uses suspension preheating to preheat and partially decompose the limestone by utilizing the high-temperature exhaust gases from the kiln tail and the high-temperature flue gases from combustion at the bottom of the disintegrator furnace, which is then fed into the limestone rotary kiln or lime shaft kiln for calcination. Thus, the calcination time in the kiln can be shortened, the length of the limestone rotary kiln can be reduced, energy consumption can be saved, and the heat exchange rate can be improved. The traditional lime production process usually involves preheating, calcining and cooling in a limestone rotary kiln or lime shaft kiln. With technological advances and increased efficiency requirements, the cyclone preheater has become the primary choice in limestone calcination.
Advantages of Cyclone Preheaters
Low Energy Consumption
limestone preheater utilizes the high-temperature exhaust gas discharged from the kiln tail and the high-temperature flue gas generated by combustion at the bottom of the decomposition furnace to preheat the limestone and complete partial decomposition and then sends the limestone to the calcination stage, which reduces the energy consumption by about 20%-30%.
High Efficiency
limestone preheater adopts a multi-stage circulating suspension preheating method, raw materials, and hot gas can be fully mixed. Recycling of high-temperature exhaust gas, the preheating stage can heat the limestone to 700°C-800°C, which improves the efficiency of calcination.
Environmental Protection
Since limestone preheater uses high-temperature exhaust gas to heat limestone, it reduces the use of fuel, which reduces the emission of carbon dioxide and other harmful gases, and reduces the pollution of the environment.
Low Cost
limestone preheater has a low fuel requirement and low energy consumption in the calcination stage. The use of a limestone preheater can reduce the length of the lime rotary kiln. limestone preheater has a simple structure and low maintenance rate. The above features can reduce the overall investment cost of limestone preheater.
Working Principle of Cyclone Preheater
- Composition of Cyclone Preheater
The cyclone preheater mainly consists of an upper feeding system, preheater body, pushing device, hydraulic system, and lower charging chamber. It contains several cascade cyclone preheaters, generally 2-6 levels, the temperature of each level is different, the higher the level, the higher the temperature. 5 levels of cyclone preheater is the most widely used.
- Operation of Cyclone Preheater
Limestone enters the cyclone gradually from top to bottom from the cyclone preheater’s feed system, and high-temperature exhaust gases flow from bottom to top to preheat the limestone. Cyclone through the rotating airflow to separate the material and exhaust gas, the larger particles of limestone fall into the next level of the cyclone, continue to heat exchange with the high-temperature exhaust gas, smaller particles of limestone with the exhaust gas continue to rise, and then from the upper end of the outlet discharged through the cyclone exhaust gas will be further purified through the dust removal system. The higher up the exhaust gases go, the lower the temperature, and the lower down the limestone goes the closer to the calcination temperature. Limestone can reach temperatures of up to 800°C in the cyclone preheater.
Excellent Cyclone Preheater Manufacturer
AGICO can provide the most suitable cyclone preheater solution according to the customer’s production scale, site size, production energy consumption, and other requirements. Meanwhile, AGICO also provides lime production equipment other thana cyclone preheater, including limestone crusher, limestone grinding mill, lime rotary kiln, and lime shaft kiln, providing one-stop service for customers. Get a free quote now!
Cyclone Preheater Applicable Materials
Limestone
Slag
Dolomite
Coal
Kaolin
Technical Parameters of Cyclone Preheater
| Sizes | Clinker productivity (t/d) | Fuel |
|---|---|---|
| RX5/280 | 280 | Pulverized coal, natural gas, heavy oil |
| RX5/300 | 300 | Pulverized coal, natural gas, heavy oil |
| RF5/500（KSV-5） | 500 | Pulverized coal, natural gas, heavy oil |
| RF5/600（KSV-5） | 600 | Pulverized coal, natural gas, heavy oil |
| RF5/800（KSV-5） | 800 | Pulverized coal, natural gas, heavy oil |
| RF5/1000（KSV-5） | 1000 | Pulverized coal, natural gas, heavy oil |
| RF5/1200(N-MFC) | 1200 | Pulverized coal, natural gas, heavy oil |
| RF5/1200（DD furnace） | 1200 | Pulverized coal, natural gas, heavy oil |
| RF5/1800 （RSP） | 1800 | Pulverized coal, natural gas, heavy oil |
| RF5/2000（KSV-5） | 2000 | Pulverized coal, natural gas, heavy oil |
| RF5/2500（KSV-5） | 2500 | Pulverized coal, natural gas, heavy oil |
| RF5/2500（DD furnace） | 2500 | Pulverized coal, natural gas, heavy oil |