With the development of the country, industrialization is a process that our country must undergo. China has been striving for industrialization for more than half a century. In a series of problems that accompany the development of industrialization, the problem of environmental pollution cannot be ignored. With the increasingly stringent national air pollution prevention and control work, bag filter in dust removal technology has gradually become the key equipment for dust control in various industries, especially for industrial furnaces and kiln.
Based on years of experience in the production and operation of maintenance of pulse bag filter, the company found that due to the obvious North-South differences in the industrial structure and climate in China, bag filter also showed different characteristics in the use of the North and South, in the design Careful consideration must be given to production, operation and maintenance.
In southern China, light industries are mainly used, such as electronics and clothing. Of course, the heavy industry in the Yangtze River Delta is also very developed. In the north, heavy industries are mainly used, such as steel, machinery, and non-ferrous metals. Based on this difference in industrial structure, the bag filter is mostly medium-sized or even large-scale in the north. In the south, besides large-scale electric power and other industries in the iron and steel industry, small and medium-sized bag filters are used.
In terms of climate, the subtropical monsoon climate dominates the South, while the temperate continental climate and temperate monsoon climate dominate the North. In the subtropical monsoon climate, winter temperatures are generally above 0°C, summer maximum temperatures are around 35°C, and annual precipitation is generally above 800-1000mm, which belongs to the humid area. The temperate continental climate zone is cold and hot in summer and has a large temperature difference. The absolute minimum temperature in winter is -70°C. In July, the average temperature in July is 26-27°C in the southern part of the country. The temperature in the north is close to 20°C, and the absolute maximum temperature is up to 50°C. The difference is as low as 62.3°C and the average annual rainfall is less than 500mm. The temperature difference in the temperate monsoon climate zone is smaller than that in the temperate continental climate zone, and the rainfall is also relatively large, but overall there is still a large temperature difference and less precipitation.
The bag filter shall prevent the gas from cooling in the bag room below the dew point during use. When the gas temperature in the bag room is lower than the dew point, the filter bag will be damp, so that the dust will not stick loosely but adhere to the filter bag. Blocked dead, resulting in failure of cleaning, so that the pressure drop of the dust collector is too large, resulting in poor operating efficiency, and some even produce a paste bag can not continue to run. Therefore, it is necessary to do a good job of preserving the heat of the dust collector. This is especially important for the huge temperature difference in the north of the country. If necessary, electric heating may be used. The main feature of the climate in the South is the abundant rainfall. The dust collector must pay more attention to preventing leakage and moisture during production. In the later period, attention should also be paid to maintenance and repair work in these two areas.
In the south with relatively high air humidity, the dust collector body is more likely to rust and corrode than in the dry north, and it is necessary to periodically remove the rust, brush the anti-corrosion paint, and if the insulation layer is damaged, it is also necessary to Repair or replace in time. Due to the dry climate in the north, the probability and severity of rust corrosion due to climatic factors are smaller than in the south.
Due to the differences in the natural environment and production conditions, not only do they need to be adapted to local conditions when designing, but also need specific analysis of specific issues in the use and maintenance of maintenance. The timely adjustment of plans based on the actual environment and conditions should be regularly summed up, summarized and analyzed. Summing up experience in practice can make great progress