Product Overview:

The pulse jet dust collector is an improved version of the baghouse dust collector, combining the advantages of various pulse jet and reverse-air cleaning systems. It overcomes the drawbacks of insufficient cleaning intensity and uneven air distribution in compartmentalized systems, thereby expanding its application range.

When dust-laden gas enters the dust collector through the inlet, it first encounters the inclined plate and baffle between the inlet and outlet, causing the gas flow to turn and enter the hopper. Simultaneously, the gas velocity slows down, and due to inertial force, coarse dust particles in the gas directly fall into the hopper. This serves as a pre-dust collection function. The gas entering the hopper then turns upward through the filter bags equipped with metal frames. Dust is captured on the outer surface of the filter bags, and the purified gas enters the clean chamber at the top of the filter bag chamber, collects at the outlet, and is discharged. During the dust removal process through the filter bags, as time increases, more and more dust accumulates on the filter bags, increasing the resistance of the filter bags and gradually reducing the airflow. To maintain normal operation, the resistance must be controlled within a certain range (140–170 mm water column). Once it exceeds this range, the filter bags must be cleaned. During cleaning, the pulse control instrument sequentially triggers the opening of each control valve to activate the pulse valves. Compressed air from the air tank is sprayed through the nozzles of the blowpipe and into the corresponding filter bags via Venturi tubes. The filter bags suddenly expand, causing the dust accumulated on their surfaces to detach, restoring the bags to their initial state. The dislodged dust falls into the ash hopper and is discharged from the unit via the ash removal system. This enables the dust accumulated on the filter bags to be periodically cleaned by pulse jet blowing, ensuring the normal passage of purified gas and the proper operation of the dust collection system.

Performance Characteristics:

A. The filtration wind speed V and dust concentration depth C [2] selected for the pulse jet baghouse dust collector.

B. This dust collector is not suitable for high-temperature or corrosive gas purification, with a maximum allowable temperature. When using “Industrial 208 polyester velvet fabric filter material,” the industrial temperature must not exceed 120°C. When using felt filter material, the working temperature must not exceed 80°C. At temperatures up to 200°C, the F-01 type needle-punched filter fabric can be used.

C. This dust collector can withstand a pressure of 300 millimeters of water column.

D. Inlet and outlet assembly configurations of this dust collector

(1) E and F types use the MC24, 36-II assembly configuration.

(2) The maintenance platform is shown in the diagram for reference when arranging the dust collector; the dust collector body does not have a maintenance platform.

(3) Marking method for dust collector model specifications and assembly configurations.

Main application:

The pulse dust collector adopts a compartmentalized offline pulse cleaning technology, overcoming the shortcomings of reverse air cleaning and general pulse cleaning. It has strong cleaning capability, high dust removal efficiency, low emission concentration, low air leakage rate, low energy consumption, small footprint, and reliable and stable operation. This series of dust collectors is particularly suitable for the following applications: calcium carbide furnace dust removal, dust removal for various electric furnaces in ferroalloy plants; flue gas purification in steel mills; dust removal for coal-fired boilers and small boilers in power plants; dust removal for waste incineration furnaces; high-temperature flue gas dust removal for smelting plants; flue gas purification for aluminum plants; dust removal for the kiln tail and kiln head of cement plants; exhaust gas dust removal for carbon black plants, etc. Its application areas are characterized by high temperatures and large flue gas volumes.

Working principle:

A pulse dust collector removes dust adhering to the filter medium (filter bags or cartridges) by blowing compressed air. Depending on the size of the dust collector, there may be several sets of pulse valves, controlled by a pulse controller or PLC. Each time, one set of pulse valves is opened to remove dust from the corresponding section of filter bags or cartridges, while the others continue to operate normally. After a certain period of time, the next set of pulse valves opens to clean the next section. The dust collector consists of components such as the hopper, upper housing, middle housing, and lower housing, with the upper, middle, and lower housings designed as separate compartments.

During operation, dust-laden gas enters the hopper through the inlet duct. Coarse dust particles directly fall to the bottom of the hopper, while fine dust particles follow the airflow and turn upward into the middle and lower housings. Dust accumulates on the outer surface of the filter bags, and the filtered gas enters the upper housing, then the clean air collection duct, and finally the exhaust duct, before being discharged into the atmosphere via the exhaust fan. The cleaning process begins by cutting off the clean air outlet duct of the compartment, placing the filter bags in that compartment in a state where no airflow passes through (compartment-stop air cleaning). Then, the pulse valve is opened to use compressed air for pulse jet cleaning. The valve closure time is sufficient to ensure that dust detached from the filter bags during cleaning settles into the ash hopper, preventing dust from reattaching to adjacent filter bags after detachment. This ensures thorough cleaning of the filter bags, with a programmable controller automatically controlling the exhaust valve, pulse valve, and ash discharge valve.

Dusty gas enters through the inlet and, as it passes through the ash hopper, some larger dust particles are separated by inertial and gravitational forces and directly fall to the bottom of the ash hopper. The dusty gas then enters the filter bag filtration zone in the middle chamber, where the gas passes through the filter bags, with dust being retained on the outer surface of the filter bags. The purified gas then enters the upper chamber through the filter bag openings.

Fill your requirements here, and we'll send the custmized solution and quotation to you by the reserved contact information.