Why Lime Kiln is More and More Important
Lime kilns not only contribute to environmental protection but also produce lime of good quality and low cost. Enterprises that utilize this new technology will see a significant increase in economic benefits. This is the practical significance of promoting the new technology of lime kilns. Nowadays, there are many types of lime kilns on the market, and there are also many manufacturers producing lime kilns. Users can choose a suitable lime kiln according to their needs. Lime kilns still have important significance in social development because industries such as steel, calcium carbide, alumina, and refractory materials consume a lot of lime, and because steel and alumina have developed rapidly in recent years, lime kilns are also essential, as lime is still mainly sourced from lime kilns.
Because the annual production of lime remains stable, but its main raw material – limestone – has not increased accordingly, there is a shortage of lime. This has stimulated the production of many local small lime kilns, causing serious environmental pollution. In this situation, local governments have issued a series of policies and regulations to curb the pollution caused by small lime kilns, but it is difficult to achieve the desired effect. Therefore, promoting modern new technology lime kilns is necessary to solve the problem of demand and completely address the pollution caused by small lime kilns.
Modern new technology lime kilns are lime kilns that have high environmental protection and energy-saving functions, high mechanization and automation. They use modern technology to fully utilize cheap energy and can use gases that were originally harmful to the environment as the main energy source, turning waste into treasure. In the future, lime kilns will continue to strive for progress, constantly absorbing advanced technology, and improving innovation according to market demand. This will not only improve the overall strength of the lime kiln industry, but also meet user needs and further promote the development of the lime kiln industry. The promotion of new technology lime kilns requires solving problems of understanding and perception. It is a requirement of the form, society, and the benefits of enterprises.
Introduction to Exhaust System of Lime Kiln
After calcination and combustion in the kiln, a large amount of waste gas is generated, which must be discharged from the kiln in a timely manner to ensure normal sintering and combustion. Therefore, the vertical kiln must be equipped with an exhaust system. The exhaust system of the vertical kiln mainly includes the kiln hood and chimney. The waste gas from the kiln contains some dust, so a dust collection device should be installed before it is discharged into the atmosphere.
The kiln hood is a cone-shaped cover made of 6-10mm thick steel plate. The bottom diameter is generally about 200mm larger than the outer diameter of the kiln mouth, and there are several observation and operation doors around the hood. With the use of instruments and computers for automation, the kiln door can be closed for a long time, and only opened when necessary, which can reduce the labor intensity of the operators and improve the working environment on the kiln.
The height of the kiln hood should be increased by 0.5m by expanding the diameter of the kiln if conditions permit. The outlet of the kiln hood should also be modified as shown in Figure 2.33 (the left half of Figure 2.33 is before modification, and the right half is after modification, that is, the connection between the bottom of the chimney and the kiln hood is expanded downward to the bottom of the kiln hood), in order to reduce the exhaust resistance. The chimneys of most lime kilns are made of 3-6mm thick steel plate. The form of the chimney includes single chimney (installed on the top or one side of the kiln hood), double chimney, inverted U-shaped chimney, etc. Kilns with smaller diameters generally use a single chimney, while those with a diameter larger than ∮2m generally use double chimneys or inverted U-shaped chimneys.
We hope that this introduction to the exhaust system of the lime kiln can help users understand the product better. If you have any questions, please feel free to contact us. We will be happy to serve you.
