A common way to renovate chimneys
With the improvement of industrial development and environmental protection awareness, chimney renovation has become a problem that many enterprises and factories must face. Chimney renovation can not only improve emission efficiency and reduce pollution, but also improve the working environment and enhance the corporate image. This article will introduce in detail the common methods of chimney renovation to help readers better understand and apply the relevant knowledge.
First, the necessity of chimney transformation.
The necessity of chimney renovation is mainly reflected in the following aspects: first, to meet the requirements of environmental protection laws and regulations and reduce pollutant emissions; the second is to improve energy efficiency and reduce production costs; the third is to improve the working environment and protect the health of employees; Fourth, enhance the corporate image and enhance the sense of social responsibility. As a result, chimney remodeling has become an indispensable part of modern businesses and factories.
Second, the common way of chimney transformation.
1.The chimney is heightened.
Chimney heightening is a common way to remodel chimneys. By increasing the height of the chimney, the temperature of the flue gas emission can be reduced, thereby increasing the height of the flue gas lift and reducing ground pollution. In addition, the increased height of the chimney can improve the diffusion conditions of the flue gas and reduce the environmental impact. However, it is important to note that the increase in chimney height may increase construction costs and may be subject to planning constraints in some areas.
2.Anti-corrosion treatment of the inner wall of the chimney.
The anti-corrosion treatment of the inner wall of the chimney is an important measure to prevent the corrosion of the chimney and prolong the service life. Common anti-corrosion treatments include spraying anti-corrosion coatings, linings, etc. Anticorrosive coatings have good corrosion resistance, abrasion resistance and high temperature resistance, which can effectively protect the inner wall of the chimney from flue gas erosion. The lining is to improve the corrosion resistance of the chimney by laying a layer of corrosion-resistant materials on the inner wall of the chimney, such as acid-resistant tiles, fiberglass, etc.
3.Flue gas desulfurization and denitrification.
Flue gas desulfurization and denitrification is an effective means to reduce sulfide and nitride emissions in flue gas. Flue gas desulfurization technology mainly includes dry, wet and semi-dry process, among which wet desulfurization technology has been widely used because of its high desulfurization efficiency and low operating cost. Flue gas denitrification technologies mainly include selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR), which can effectively reduce the nitrogen oxide content in flue gas.
4.Flue gas dedusting.
Flue gas dust removal is a key link in reducing particulate matter emissions in flue gas. Common flue gas precipitator technologies include electrostatic precipitator, bag precipitator and wet precipitator. Electrostatic precipitator technology charges particles through a high-voltage electric field and collects them under the action of an electric field, which has the advantages of high dust removal efficiency and low energy consumption. Baghouse technology, on the other hand, uses filter bags to capture particulate matter, which is suitable for treating flue gases with a high content of fine particulate matter. Wet dust removal technology combines particles with water to form slurry and discharge them through water spray or spray, which has the advantages of high dust removal efficiency and can remove harmful gases at the same time.
5.The smoke is reheated.
Flue gas reheat is a technique that increases the discharge temperature of flue gases by heating them. Flue gas reheat can reduce the moisture content in the flue gas and reduce the pollution of flue gas to the environment. At the same time, flue gas reheating can also increase the lifting height of flue gas and further reduce ground pollution. However, it is important to note that flue gas reheating may increase energy consumption and operating costs.
3. Precautions for chimney transformation.
When carrying out chimney transformation, it is necessary to pay attention to the following aspects: first, to ensure that the transformation plan meets the requirements of environmental protection regulations; the second is to choose the appropriate transformation technology and equipment to ensure the transformation effect; the third is to consider the cost and economic benefits of transformation; Fourth, we should pay attention to the safety issues in the transformation process to ensure the safety of personnel and equipment.
IV. Conclusion. Chimney renovation is an important environmental protection project, which is of great significance for improving emission efficiency, reducing pollution, improving the working environment and enhancing corporate image. By understanding the common methods and precautions of chimney transformation, enterprises and factories can better carry out chimney renovation work and contribute to the cause of environmental protection.