PPC type pneumatic pulse bag filter

The PPC type air box pulse bag filter combines the advantages of chamber back blowing and pulse jet cleaning dust collectors, overcomes the disadvantage of poor cleaning effect caused by simultaneous pulse jet cleaning and filtration, and expands the application range of air box pulse bag filters. Due to its improved dust removal efficiency and extended service life of the filter bag, it is a high-performance bag filter.

Structural characteristics of PPC type pneumatic pulse bag filter:

This is a bag filter with a segmented structure assembly, which uses a pulse valve on the top of the chamber to alternately clean the filter bags of each chamber with a segmented air stop box pulse cleaning (also known as offline cleaning). It is different from the cleaning of general jet dust collectors. Pulse jet cleaning only sprays and cleans each row of filter bags one by one in the same filtering chamber (known as online cleaning), while the other rows of filter bags are still filtered. The cleaning and filtering are carried out simultaneously in one room, and the dust under the cleaning is secondary flown, some of which will be collected by adjacent filter bags, which is not conducive to the filtration of gases with high dust concentration.

The PPC type pneumatic pulse bag filter is carried out when the valve is closed in one room to stop filtering. The cleaned dust settles downward in the ash half without secondary flying, which is conducive to filtering gases with high dust concentration. Moreover, the filter bag in another room can be changed without stopping the machine.

PPC type pneumatic pulse bag filter is divided into four series according to different bag numbers: 32 bags/chamber, 64 bags/chamber, 96 bags/chamber, and 128 bags/chamber. Each series is further divided into multiple specifications according to different room numbers, totaling 33 types. Its structure consists of the following parts:

(1) Shell part: including clean room (also known as gas purification box, storage box), filtration room, partition board, maintenance door and shell structure. The cleaning room is equipped with a lift valve and a flower board, and a short spray pipe. The filtering room is equipped with a filter and its framework.

(2) Ash hopper and ash unloading mechanism: There are ash hoppers and screw conveyors, air conveying chutes, and rigid impeller unloaders (ash discharge valves) set up according to different series and dust concentrations.

(3) Inlet and outlet air box body: including inlet and outlet air ducts and middle partition. The single row (or single row) structure is arranged on one side of the shell, and the double row (or double row) structure is arranged in the middle of the shell: the 32 series is smaller without a box, and the inlet and outlet air ducts are respectively connected to the ash hopper and the cleaning room.

(4) Pulse dust cleaning device: including pulse valve, air bag, lifting valve cylinder and its solenoid valve, etc.

(5) Compressed air pipeline and pressure reducing device, oil-water separator, oil mist device, etc.

(6) Pillars, vertical cage ladders, and railings.

The PPC type pneumatic pulse bag filter has four series and 33 specifications, with a filtration area ranging from 93m2-4361m2 and a processing air volume ranging from 69003/h-314000m3/h. It is widely used in the building materials, cement, metallurgy, machinery, chemical and refractory materials industries; Dust collection system (or dust removal system) specially used for crushing, drying, coal grinding, powder selection, packaging, warehouse roof, clinker cooling machine, etc. in cement plants; It is also suitable for coal mill dust collection, but additional measures need to be taken and the structure of the dust collector needs to be changed accordingly. It can also be applied to dust collection of gases with extremely high dust concentration, such as coal mill systems with O-Sepa powder separators, whose gas dust concentration can reach 1000g/m3 (standard) or above, and cyclone dust collectors for pre dust collection can be omitted. For cold regions in northern China, this dust collector can also be applied after adding thermal insulation devices.