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Boiler Bag Dust Collector Structure 1) Inlet/outlet tuyere and box: Including inlet and outlet ducts and intermediate partitions.
2) Pulse cleaning device: including pulse valve, air bag, poppet valve and its solenoid valve.
3) Shell part: including clean room (or gas purifying box, air box), filter box, compartment partitions, access door and shell structure. Clean room with poppet valve and flower plate, short pipe blowing; filter room With filter bag and its skeleton.
4) Dust hopper and unloading mechanism: There are ash bucket and screw conveyor.
5) Compressed air line and its decompression device, oil-water separator, oil mist device and so on.
6) Escalator platforms and railings: to ensure the safety of operations, and fully consider the ease of maintenance.
Boiler bag dust collector uses off-line pulse cleaning. It is a unit type dust collector which has a large air volume, good dedusting effect, high dust removal efficiency, reliable operation, convenient maintenance and small footprint. Boiler bag filter consists of upper box, middle box, ash bucket, draft tube, bracket, filter bag assembly, injection device and ash conveying system. The dust collector is arranged in a single row and one room is a ash bucket. The filter bag specification is φ130×2450mm, and the upper end of the filter bag adopts a spring-rising circle, which has good sealing performance and is convenient and quick to change the bag. Each filter bag is provided with a carbon steel bag cage. Electromagnetic pulse valve, specification 2.5" angle valve, 1 set per chamber. PLC controller is used, 7 off-line valves. Dust-laden gas enters the hoppers of each unit through the diversion pipe. Under the guidance of the system, large particles of dust are separated and directly fall into the ash hopper, and the rest of the dust enters the middle box filter area with the airflow. The filtered clean gas passes through the filter bag and is discharged through the upper box, the off-line valve, and the exhaust pipe. When the filter surface area reaches a certain amount, the off-line valve is closed by the cleaning control device according to the set procedure, the electromagnetic pulse valve is opened, the dust on the filter bag is shaken off, and the dust falling into the ash bucket is discharged. The valve is discharged, and the dust bag is blown and blown in each chamber, and when the off-line valve of the first chamber is closed, cleaning and cleaning are started, while the remaining chambers continue to work, and after the first chamber is cleaned, it is taken off-line. The valve was opened and the work continued.The second chamber began to clear the dust and proceeded in sequence, thus greatly avoiding what we often call "the second flight of dust."
Boiler Bag Dust Collector Design Principles 1. Strictly implement the national regulations on environmental protection to ensure that all indicators meet national and regional standards for pollutant discharge;
2. It adopts mature, reliable and stable processing technology at home and abroad to meet the requirements of governance objectives in a stable and reliable manner, with simple operation and convenient management;
3. The components of the equipment need to be economically reasonable, save investment, occupy less land, and have low operating costs;
4. In the process design, there is greater flexibility, adjustability, to adapt to the periodic changes in the amount of smoke;
5. In order to improve the management level of the processing equipment and realize modern scientific management, the design of the program should fully consider the national conditions of our country and adopt advanced and reliable automatic control technology and instrumentation monitoring systems;
6. Make use of the existing terrain to make the layout of the equipment reasonable and reduce the area.
Boiler bag filter design data and emission standards The design of the flue gas volume is based on the theoretical data of the flue gas generation volume generated by the conventional biomass boiler combustion, and it is determined that the 1T biomass boiler will generate approximately 3,000 m3/h of flue gas during operation.
2. After the treatment of discharge standards, the required indicators meet the second time standard of “Air Pollutant Emission Standard†(GB13223-2003), as detailed in the following table:
Pollutant dust emission concentration mg/m3 SO2 emission concentration mg/m3 NOx emission concentration (mg/m3) Flue gas blackness (Ringermann black level) emission standard ≤ 20
30T35T Fluidized Bed Boiler Bag Dust Collector Design Principle
Boiler bag dust collector has high dust removal efficiency, good dedusting effect, large processing air volume, convenient maintenance, reliable operation and small floor space; it is widely used in various boilers, ferroalloy industries, alumina industry, carbon industry, coking industry, chemical industry Industry, metallurgical industry steelmaking blast furnace, and building materials industry dust and dust control.