Detailed explanation of the structural characteristics of lime kiln vertical kiln kiln
As an important equipment for lime production, the structural characteristics of lime kiln vertical kiln are directly related to the yield and quality of lime, as well as the energy consumption and environmental pollution control during the production process.
1、 Overview
Lime kiln vertical kiln is a vertical cylindrical intermittent production equipment widely used in the lime industry. It plays a crucial role in lime production with its unique design and working principle. Below, we will provide a detailed introduction to the structural characteristics of the lime kiln vertical kiln from the aspects of kiln structure, combustion system, discharge system, etc.
2、 Kiln structure
Kiln body shape and size
The kiln body of a vertical lime kiln is in an upright cylindrical shape, and the height and diameter are determined based on the production scale and product requirements. Usually, the height of large vertical kilns can reach tens of meters, and the diameter is also several meters or more. This design is conducive to the full combustion and decomposition of materials in the kiln. Refractory lining The inner wall of the kiln is lined with refractory materials to withstand high temperatures and chemical erosion. The selection of refractory materials should take into account factors such as the decomposition temperature of limestone, the atmosphere inside the kiln, and corrosive gases. Commonly used refractory materials include high alumina bricks, silica bricks, etc.
Multi-layer grate
There are multiple layers of grates inside the kiln, which are used to support materials and promote contact between materials and high-temperature flue gas. The design of the grate should take into account the fluidity and breathability of the materials, to ensure that the materials are evenly distributed and fully burned in the kiln.
Sealing performance
The sealing performance of lime kiln vertical kiln is of great significance for maintaining the temperature inside the kiln and reducing heat loss. The kiln body adopts a sealed design, ensuring good sealing performance during operation by laying refractory materials and setting sealing devices.
3、 Combustion system
combustion chamber
The combustion chamber is located at the lower part of the kiln body and is the place where limestone is burned. The combustion chamber is equipped with a fuel supply system and a burner, which are used to mix fuel with air and produce high-temperature flames during combustion. The design of the combustion chamber should consider the distribution of flames and combustion efficiency to ensure sufficient combustion of materials in the kiln.
Fuel supply system
The fuel supply system includes fuel storage, transportation, and metering devices. Choose a suitable supply system based on the type of fuel used (such as natural gas, coal gas, heavy oil, etc.) to ensure stable and reliable supply of fuel to the combustion chamber.
burner
The burner is a key component of the combustion system, and its design should meet the requirements of flame stability, high combustion efficiency, and low smoke emissions. The burner adopts automatic adjustment technology, which can adjust the flame size and combustion speed according to the temperature and material conditions inside the kiln.
4、 Discharge system
Discharge port
The discharge port of the lime kiln vertical kiln is located at the bottom of the kiln body, used to discharge the calcined lime. The design of the discharge port should take into account the fluidity and discharge speed of lime to ensure timely and smooth discharge of lime.
Discharge device
The discharge device includes equipment such as a vibrating feeder and a screw conveyor, which is used to transport lime from the discharge port to subsequent processing equipment. The design of the discharge device should take into account factors such as the particle size, humidity, and conveying distance of lime to ensure stable and reliable transportation of lime.
5、 Environmental protection measures
Waste gas treatment system
During the operation of a lime kiln vertical kiln, waste gas is generated, which contains harmful substances such as sulfur dioxide and nitrogen oxides. In order to reduce environmental pollution, an exhaust gas treatment system should be set up to purify the exhaust gas. The exhaust gas treatment system includes desulfurization, denitrification, dust removal and other devices, and suitable treatment processes can be selected according to the actual situation.
Noise control measures
The lime kiln vertical kiln will produce noise pollution during operation. In order to reduce the impact of noise on the surrounding environment, effective noise control measures should be taken, such as setting up soundproof walls and installing silencers.
Lime kiln vertical kiln, as an efficient, energy-saving, and environmentally friendly lime production equipment, has a wide range of applications in the lime industry. Its structural characteristics are mainly reflected in the shape of the kiln body, refractory material lining, multi-layer grate, combustion system, discharge system, and environmental protection measures. By optimizing the design and application of these structural characteristics, the energy utilization efficiency, product quality, and environmental performance of lime kiln vertical kilns can be improved, contributing to the sustainable development of the lime industry.
