Application of hot air drying furnace According to the requirements of production process conditions, our factory has designed a hot air drying furnace. As shown, after several years of operation, the effect is good and significant economic benefits have been taken. The main equipment constitutes a hot air drying furnace consisting of a hot air generator (including a burner, a circulating fan, a heat exchanger, etc.), a furnace room structure, an electrical control device, a guide rail, a trolley, and the like.
l Electric heating drying oven shows that the heating speed is slow and the production efficiency is low. Hot air drying oven is indicated. Working principle The working principle of the hot air drying furnace: the air is discharged from the air guiding tubes on the bottom side of the drying furnace, the fresh air is added to and from the furnace door, the air is returned to the top of the oven, and the heat is exchanged with the heat exchanger through the forced circulation of the fan to obtain high temperature. Heat the steel wire to achieve the purpose of drying.
It is placed outside the furnace, and it can be carried out if it is to be repaired without cooling the furnace body. It is convenient to maintain. In addition, even if the furnace needs to be repaired, the fan can be used to send cold air, reduce the furnace temperature, and also can be quickly repaired. Energy saving and consumption reduction, reducing production costs Comparison of two furnace type production results, as shown. The production cost of the two furnace types is higher than that of the electric heating drying oven hot air drying oven drying furnace. The heating parameters are: 150-250 ° C, heating time: 40-90 minutes.
The actual heating effect is fast and the production efficiency is high. Before the electric heating drying oven used by our factory, if it is filled with 10 tons of wire, the drying time is up to 3-4 hours, the heating speed is slow, the production efficiency is low, and the bottom is often In the wet state, the wet air is not easy to discharge, the temperature uniformity is poor, and the drying effect is not ideal. However, the hot air drying oven currently used has a fast heating speed, and can heat up to 150 ° C or more in an hour or so, and the production efficiency is high; Keep dry and have good temperature uniformity. There is no wet upper part in the upper part of the wire, and there is no wet air. The effect of dry bath is ideal.
Daily maintenance is convenient. The far-infrared electric heating drying furnace forms 120 heating points from 120 electric heating plates and is placed in the furnace wall. Once several heating points fail, the heating time will be extended to reach the process temperature. If more electric heating plates fail, it is necessary to stop the furnace and water-cooled screw unit cold furnace in order to carry out maintenance, and the maintenance time is long, which is very inconvenient.
And hot air drying Shanghai, only one heating point - hot air per furnace capacity Shanghai temperature heating time electric oil consumption electric oil unit price fee ton cost 150 ° C 4 hours 480KWh0.85 yuan / KWh408 yuan 40.8 yuan / ton 10t150 ° C 2 hours 70kg3.5 Yuan/kg245 yuan 24.5 yuan / ton can be seen, the heating time and energy consumption of the hot blast stove are low, which is incomparable to the electric heating furnace, fully reflecting the superiority of the hot blast stove. According to the monthly output of 800 tons, the hot air drying furnace saves 13040 yuan per month, and it can be recycled after three months of investment. The economic benefits are remarkable, and the annual efficiency can be increased by nearly 150,000 yuan.
Conclusion (1) In the current situation that the total supply of metal products exceeds demand, the market competition is very fierce, and the quality of products must be improved. To this end, the adoption of new equipment is an effective way. (2) In order to improve the market competitiveness of products, saving energy and reducing production costs, it is a very important task. In addition to strengthening management, low energy consumption and low cost, eliminating outdated equipment and adopting new equipment will achieve twice the result with half the effort.
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