1、 Overview of Bag Pulse Dust Collector

The long bag low-pressure pulse dust collector developed by Dongguan Gaoda Environmental Protection Technology Co., Ltd. is a new and efficient pulse bag dust collector developed on the basis of conventional short bag pulse dust collectors. It not only combines the advantages of chamber back blowing and pulse blowing for dust cleaning, but also extends the filter bag, fully utilizing the powerful blowing effect of compressed air for dust cleaning. It is still a large-scale dust removal equipment with high air volume, good dust cleaning effect, high dust removal efficiency, reliable operation, easy maintenance, and small footprint.

The Long Bag Low Voltage Pulse Dust Collector series provides excellent performance services for air purification and material recovery in industries such as metallurgy, power, building materials, minerals, cement, chemical, carbon black, asphalt concrete mixing, boilers, etc.

2、 Working mechanism of bag pulse dust collector

1. Filtering principle; The dusty gas enters through the air inlet, and when passing through the ash hopper, some large particles of dust in the gas are separated by inertial force and directly fall into the ash hopper. The dusty gas enters the filter bag filtration area of the box after passing through the ash hopper, and the gas passes through the filter bag while the dust is trapped on the outer surface of the filter bag. The purified gas enters the upper box through the filter bag and is discharged through the air outlet.

2. Dust cleaning principle: As the filtration time prolongs, the dust layer on the filter bag continues to accumulate, and the resistance of the dust removal equipment continues to rise. When the equipment resistance rises to the set value, the dust cleaning device begins to clean the dust. The electromagnetic pulse valve opens, and the compressed air rapidly expands in the upper box in a very short time, flowing into the filter bag, causing the filter bag to expand and deform, generating vibration. Under the action of reverse airflow flushing, the dust attached to the outer surface of the filter bag is peeled off and falls into the ash hopper. The dust cleaning is completed, the electromagnetic pulse valve is closed, and the chamber returns to normal filtering state. The cleaning process is carried out sequentially in each room, starting from the cleaning of the first room and ending with the next cleaning cycle.?

3. Dust collection: The dust that has been separated through filtration and dust cleaning work falls into the ash hopper, and is discharged from the ash hopper through the plug valve and pneumatic dust discharge valve. Then it will be transported out by the conveyor in a centralized manner.

3、 Performance characteristics of bag pulse bag filter

1. High dust cleaning efficiency and low energy consumption

2. Pulse valves have a long service life and good reliability.

4. The filter bag is easy to assemble and disassemble, and can be securely fixed

5. The air duct adopts a collection pipe layout with a compact structure.

6. Adopt advanced PLC programmable controller for the entire operation process of the dust collector.

7. The box adopts an airtight design with good sealing performance. The inspection door uses excellent sealing materials, and the air leakage rate is very low.

8. The layout of the inlet and outlet channels is compact, with low airflow resistance.

9. Install insulation devices to prevent condensation of smoke at low temperatures.

4、 Design points of bag pulse dust collector

1. Long bag pulse dust collectors are divided into three different series based on the diameter of the filter bags, the arrangement of the filter bags in each chamber, and the filtration area. They are arranged in rows based on the chamber, and are divided into single and double arrangements

a. Divided into single row and double row, the filter bag size is 130X6000. The pulse blowing pressure can be low pressure (0.2-0.3Mpa) or high pressure (0.4-0.5Mpa), which can be selected by the user.

b. Only double row arrangement, with filter bag size of 130X6000. The pulse injection pressure is generally designed to be low pressure (0.2-0.3Mpa). c. Only double row arrangement, with filter bag size of 160X6000. The pulse injection pressure is high pressure (0.4-0.5Mpa). If users have special requirements, special types can also be designed according to their opinions.

2. The inlet dust concentration of the dust collector is generally allowed to be below 50g/Nm3. If there are special requirements, they can be designed according to user requirements.