PFR Kiln
CAPACITY: 300~600t/d
FEED SIZE: 30~ 80mm
Fuel: pulverized coal, gas, heavy oil, etc.
activity degree of lime: ＞360ml
Pfr kiln(parallel flow regenerative kiln)or pfr lime kiln, is a new type of vertical lime kiln. The pfr kiln designed and constructed by AGICO adopts parallel flow heat storage technology to improve heat utilization and reduce heat loss, thereby achieving a more energy-saving effect. Our PFR Kiln can produce lime with high activity, low raw firing, and wide fuel adaptability. It is suitable for metallurgy, chemical engineering, building materials, and papermaking industries.
Structure of PFR kiln
The pfr lime kiln has two kiln bodies, which are filled with limestone. There is a connecting channel at the bottom of the kiln body to connect the two kiln bodies. During operation, the two kiln bodies alternate. Due to the use of parallel flow calcination, alternating ignition and other methods, the double chamber lime kiln evenly calcines the limestone, has high activity, high output, high heat utilization rate, and has the characteristics of parallel flow and heat storage. It is increasingly being used to replace the original single tube lime kiln and is an ideal kiln type for producing high activity lime.
The pfr lime kiln is a parallel flow thermal storage lime vertical kiln, consisting of two chambers connected by a lower channel of the calcination belt. The functions of calcination and thermal storage in the two chambers alternate and operate alternately. When one kiln chamber is calcined, the other kiln chamber stores heat and exchanges every 12-15 minutes. Due to its reasonable thermal characteristics for calcining lime, the pfr kiln can produce high-quality lime products; Due to the principle of regenerative combustion technology, its energy consumption index is the lowest among all kiln types. The parallel flow thermal storage active pfr kiln has a high level of automation, which can ensure the long-term safe, stable and efficient operation of the lime kiln, and reduce the cost of operating workers.
technical parameters of PFR kiln
| Parameter | Specification |
| Capacity (t/d) | 300~600 |
| Flexibility Range (%) | 70-110 |
| Raw Material Size (mm) | 30~80, size ratio 1:2 |
| Suitable Fuels | Pulverized coal, gas, heavy oil, etc. |
| Heat Consumption | 850kCal/Kg lime |
| Waste Gas Temperature (℃) | about 150 |
| Calcination Method | Parallel Flow Calcination |
| Overburning Rate of Lime (%) | ≤5 |
| Lime Quality (Activity) | Activity > 360ml |
technical advantages of pFR kiln
The main technical advantages of pfr kiln include co-current calcination, high heat utilization rate, uniform heating, good environmental protection effect, convenient quality inspection, reliable equipment, good insulation performance of kiln body, and a high degree of automation.
Strong capacity
The operational flexibility of PFR Kiln can range from 70% to 100%, taking a 300t/d kiln as an example. The production capacity can be adjusted arbitrarily within the range of 210t/d-300t/d, and stable operation can be achieved without affecting quality and consumption indicators.
Save cost
Due to the alternating calcination and heat storage between the two kiln chambers, the kiln can operate continuously without the need for shutdown cooling. Pfr kiln improves work efficiency, reduces energy consumption, and improves heat utilization efficiency.
Eco-friendly
Based on the unique technology in pfr kiln, the thermal energy is fully utilized, and the remaining CO2 after calcination generally does not exceed 2%. The adoption of low nitrogen combustion technology has reduced exhaust emissions, which is beneficial for environmental protection.
Wide application
The pfr kiln is suitable for the calcination and melting processes of various solid raw materials, and it has a wide range of applications, such as the chemicals industry, lime calcination, solid waste treatment industry, building materials, and other industries.
Why choose us?
AGICO Cement is a professional cement equipment manufacturer with more than 20 years of experience. We can customize different scaled cement plants and lime calcination plants, we also supply all types of equipment used in these solutions. Based on our strong production capacity and professional engineering team, we have built 100+ projects around the world, including those in Britain, Singapore, UZ, Canada, Chile, Thailand, India, Morocco, etc.
We provide customized services according to client’s real needs, including pre-sale, after-sale, and other services.
EPC solution for you
1. Raw Material Test
2. Program Design
3. Device Manufacturing
4. installation
5. debugging
6. Technical Training
7. delivery on time
8. after-sales service
Application of PFR kiln
As for the application, pfr kiln is mainly used in industries such as steel, chemical, and building materials. In addition, the pfr kiln can also be used in various fields such as solid waste and hazardous waste treatment
- In the steel industry, it can be used to produce raw materials such as active lime and lightly burned dolomite;
- In the chemical industry, it can be used to produce chemical products such as calcium carbide and soda ash;
- In the building materials industry, it can be used to produce building materials products such as cement clinker and ceramics.
Successful cases of AGICO CEMENT
