A, LFEF type high temperature glass fiber bag dust collector overview:
LFEF type high temperature fiberglass bag dust collector for new product research and development of high temperature flue gas and dust, the machine adopts PLC microcomputer control, sectional reverse blow, timing, constant resistance cleaning, temperature testing and other measures, so that the glass fiber bag precipitator, efficient and stable operation in high temperature exhaust dust emission concentration, chimney exit less than the national emission standard of 100mg/Nm3 (up to less than 50 mg/Nm3). The equipment is not stopping room change bag, simple operation, safe and reliable operation, low cost, is the effective solution to high temperature flue gas and dust, the dust collector has been large series, suitable for purification of corrosive gas in the furnace, calcium carbide furnace, rotary kiln, high temperature and high humidity.
Two, LFEF type high temperature glass fiber bag filter structure and working principle:
1, structure
The dust removal equipment by the dust gas entrance to the outlet of the purifying flue gas, the body structure is composed of an air inlet pipe and an inlet chamber and a bag chamber, an ash bucket, ash valve, outlet pipe and reverse blowing system and dust control system.
The dust remover body is all steel structure, and design measures by thermal expansion, the shell is made of light wool board surface with double insulation, Delta =0.5 galvanized steel door, and the installation of new technology pulling rivets, cold pressing rolling rolling forming process of plate, not only increasing the strength and ensure the quality of equipment.
Dust collector is used in the special treatment of high temperature resistant glass fiber cloth, the flexural strength and abrasion resistance, and thermal shock performance were good, and according to the different characteristics of flue gas, corresponding treatment of glass fiber, to the use requirements and emission standards.
2, LFEF type high temperature glass fiber bag dust collector working principle:
(1): filter dust through the flue into the intake pipe, the upper part of the coarse grain into the chamber, by inertia into ash hopper, the remaining part of flue gas and dust into the bag, the inner surface of the filter, into the bag room, and then through the ventilation slot, exhaust valve, outlet pipe from the exhaust fan into the atmosphere, the the equipment is the upper intake air, negative pressure operation of internal filter glass fiber bag precipitator.
(2) cleaning and automatic control
Esp after a period of operation, the dust layer thickness of filter bag surface trapping, running resistance of dust rising when increased to a certain value, which requires cleaning of filter bag, namely through the external force to remove dust on the surface of the filter bag attached, make the operation resistance to dust down resistance decreases to a certain value, the chamber bag and put into normal operation.
The cleaning process is mainly run by reverse blowing, when the resistance rise to the need for cleaning, computer instructions close the exhaust valve, open the reverse blow valve, the expansion of the original dust bag in the back blowing under the action of pressure flat deformation, so as to reach the surface of the filter bag dust cleaning attachment in the. The dust falling into the ash bucket, ash valve into the ash discharge mechanism, the cleaning process is room in turn, does not affect the normal work of the dust catcher.
According to time program, each room can be automatically carried out according to the adjustable time parameter, and the dust removal period can be adjusted according to the process requirement.
In addition to the above control method, but also provided with a manual control mechanism, can be manually carried out normal cleaning.
Three, LFEF type high temperature glass bag filter temperature control:
The flue gas temperature is 60 ~ 300 DEG C range, the moisture content of the flue gas in the range of 4 to 12% or so, in order to prevent dust condensation and paste bag and bag etc. due to the high temperature burning accident. Take the following measures:
(a) body and the ash bucket air inlet pipeline, baghouse insulation measures should be taken to prevent dewing, dust remover.
(two) the temperature detection and automatic alarm device is arranged in the dust collector and an air exhaust port, exhaust gas temperature range more than once dust collector, then alarm and automatic temperature control measures, to ensure the safe operation of dust collector