- Product：Daily production of 100 tons of lime kiln vertical kiln
- Product alias：New vertical environmentally friendly lime kiln
- Calcination technology：countercurrent calcination
- Capacity scale：100T/P
- Control system：PLC control system
- Unit energy consumption：120-130kg standard coal
- Usage：Metallurgy, construction lime calcination
- Price：Cost varies depending on production capacity scale
Lime kilns, as important industrial equipment, play an indispensable role in multiple fields. Among them, the vertical kiln, as one of the mainstream equipment for lime production, is widely used in lime production enterprises of various scales due to its simple structure, convenient operation, and low energy consumption.
The principle of lime kiln
The main principle of a lime kiln is to heat limestone (CaCO3) at high temperature to decompose it into calcium oxide (CaO) and carbon dioxide (CO2). The specific reaction equation is:
CaCO3 → CaO+CO2. In a lime kiln, limestone is loaded into the kiln barrel and heated by fuel such as coal, natural gas, or wood. When the temperature reaches about 900 ℃, limestone begins to decompose, releasing carbon dioxide gas and generating calcium oxide. Calcium oxide is then extracted and used for various purposes, such as manufacturing cement, steelmaking, and treating wastewater.
Lime kilns can also be used to produce lime water (Ca (OH) 2). By adding calcium oxide to water and reacting with it to produce lime water, the reaction equation is:
CaO+H2O → Ca (OH) 2. Lime water has a wide range of applications in treating sewage and wastewater, manufacturing paints, cosmetics, and other products.
Parameter Table for Vertical Lime Kiln with a Daily Output of 100 Tons
The following is a table of the main parameters for a daily production of 100 tons of lime kiln vertical kiln
| Parameter Name | Parameter Value | Parameter Description |
|---|---|---|
| Daily production | 100 tons | The daily production of lime in the lime kiln |
| Kiln body diameter | 4.8 meters | Effective diameter on the inner side of the kiln body |
| Kiln body height | 25.5 meters | The effective height of the kiln body |
| Fuel type | Coke, anthracite, etc | Solid fuel for heating limestone |
| Fuel consumption | 120-130 kg standard coal/ton of lime | The amount of fuel required to produce each ton of lime |
| Temperature range | 800℃-1200℃ | Suitable reaction temperature range in lime kiln |
| Feed rate | Adjust according to production needs |
Control the residence time of limestone in the kiln |
| Air flow rate | Adjust according to temperature distribution | Control the oxygen concentration and temperature distribution inside the kiln |
| Kiln structure | Circular single tube vertical kiln | Simple structure and easy maintenance |
| control system | PLC control operating system | Realize full automation of feeding, mixing, calcination, and ash discharge |
| Correction system | Equipped with auxiliary combustion air ducts | Effectively overcoming the occurrence of biased burning phenomenon |
| Ash discharge system | Zhou Quan Ash Extractor and Secondary Hydraulic Air Lock Device | Ideal wind locking performance |
Advantages of Lime Kiln Vertical Kiln
Simple structure and convenient construction: The daily output of 100 tons of lime kiln vertical kiln adopts a single tube vertical kiln structure. Compared with other kiln types, its structure is simple, construction is convenient, and the masonry process is also relatively simple. This design not only reduces construction costs, but also improves construction efficiency.
Efficient and energy-saving: This type of vertical kiln adopts advanced mixing and distribution systems, which mix stones and fuel evenly, which is conducive to the uniform calcination of lime. At the same time, the air supply system uses centrifugal fans and mechanical vertical kiln air caps to supply air, achieving uniform pressure and volume of air in the furnace, and making the combustion inside the furnace more complete and uniform. These measures effectively solve the problem of lime burning and overburning, improve the quality of lime products, and reduce energy consumption.
High degree of automation: This type of vertical kiln adopts a PLC control operation system, achieving a fully automated production mode from feeding, mixing, calcination, and ash discharge. This not only reduces the labor intensity of workers, but also improves production efficiency. Meanwhile, through real-time monitoring and data acquisition systems, real-time data of key parameters can be obtained, analyzed and processed, thereby optimizing production conditions and improving product quality.
Small footprint and low investment cost: Compared to other kiln types, vertical kilns have a smaller footprint and relatively lower investment cost. This gives this type of vertical kiln unique advantages in areas with limited terrain conditions.
Environmental protection and energy conservation: This type of vertical kiln adopts micro negative pressure operation (kiln top) to evenly distribute the airflow inside the kiln, which is conducive to the calcination of lime. At the same time, a correction system was designed to prevent bias burning, effectively overcoming the occurrence of bias burning phenomenon. These measures not only improve the calcination quality of lime, but also reduce environmental pollution and energy consumption.
High operational flexibility: This type of vertical kiln has high operational flexibility, and can be adjusted from 60% to 100% to achieve stable production. This enables this type of vertical kiln to adapt to different production needs and market changes.
The daily output of 100 tons of lime kiln vertical kiln has the advantages of simple structure, high efficiency and energy conservation, high degree of automation, small footprint, low investment cost, and environmental protection and energy conservation. These advantages make this type of vertical kiln have broad application prospects in the field of lime production.
