A direct high purification hot air stove uses fuel for direct combustion, undergoes high purification treatment to form hot air, and comes into direct contact with materials for heating, drying, or baking.
The high-temperature combustion gas obtained from the combustion reaction of the fuel further comes into contact with the outside air, mixes to a certain temperature, and directly enters the drying chamber or baking room, where it comes into contact with the dried material, heats and evaporates water, thereby obtaining the dried product. Nowadays, it is widely used in the building materials industry for drying wood, artificial boards, laminated boards, gypsum boards, and fiberglass products.
During the combustion and drying process of a hot blast stove, a large amount of smoke and dust is generated. So, how should we treat the smoke and dust of the hot blast stove? Below isZhengzhou dust collectorZhengzhou Jienengda Environmental Protection Equipment Co., Ltd., a production and sales manufacturer, introduces:

According to the working characteristics of the hot blast stove in the production process,hot blast stovedust collectorAdopting offline dust cleaning technology, the filter bag adopts secondary filter material. This system adopts a large long bag dust collector as the full negative pressure operation mode.
shouldLarge LongBag filter（Hot air stove dust collectorIt is a new and efficient bag filter developed on the basis of conventional short bag pulse dust collectors. It not only combines the characteristics of chamber back blowing and pulse cleaning, but also overcomes the shortcomings of insufficient intensity of ordinary chamber back blowing and general pulse cleaning dust reattachment. In addition, it extends the filter bag and fully utilizes the powerful cleaning effect of compressed air. It is a large-scale dust removal equipment with high dust removal efficiency, small footprint, stable operation, reliable performance, and easy maintenance. It can be widely used in industries such as metallurgy, casting, building materials, mining, and chemical engineering.
　　Large LongBag filter（Hot air stove dust collectorPerformance characteristics:
1. Adopting pulse jet cleaning technology, it has strong cleaning ability, high dust removal efficiency, low emission concentration, low air leakage rate, low energy consumption, low steel consumption, small footprint, stable and reliable operation, and good economic benefits. Suitable for flue gas dust removal in metallurgy, building materials, machinery, chemical, power, and light industry industries.
2. The box adopts an airtight design with good sealing performance. The inspection door uses excellent sealing materials, and during the manufacturing process, kerosene is used for leak detection, resulting in a very low air leakage rate.
3. The layout of the inlet and outlet air ducts is compact, with low airflow resistance.
4. The use of segmented air stop pulse spraying for dust cleaning has a long cleaning cycle and low consumption, which can double the lifespan of filter bags and valve plates.
5. It can achieve non-stop bag replacement and maintenance without affecting the normal operation of the equipment.
6. The use of upper bag extraction method has improved the operation of bag replacement.
　Large LongBag filter（Composition and characteristics of hot blast furnace dust collectorworking principle:
dust collectorComposed of ash hopper, upper box, middle box, lower box and other parts, the upper, middle, and lower boxes are divided into compartments.
During operation, dusty gas enters the ash hopper through the air inlet duct. Coarse dust particles directly fall into the bottom of the ash hopper, while fine dust particles enter the middle and lower boxes upwards with the turning of the airflow. Dust accumulates on the outer surface of the filter bag, and the filtered gas enters the upper box to the clean gas collection pipe exhaust duct, and is discharged to the atmosphere through the exhaust fan. The dust cleaning process involves first cutting off the clean air outlet duct of the room, so that the bag in the room is in a state of no airflow passing through (stopping the air and cleaning the dust in each room). Then, the pulse valve is opened and compressed air is used for pulse blowing to clean the dust. The shut-off valve is closed for a sufficient time to ensure that the dust peeled off from the filter bag settles in the ash hopper after spraying, avoiding the phenomenon of dust adhering to the adjacent filter bag surface with the airflow after leaving the filter bag surface. The filter bag is thoroughly cleaned, and the exhaust valve, pulse valve, and ash discharge valve are fully automatically controlled by a programmable controller.