The technical features of the dust remover of coal fired boiler: 1, segmented assembly has the characteristics of small footprint, convenient transportation and installation. 2, the use of advanced composite materials and high temperature glass fiber reinforced plastics, make it increase the degree of wear and high temperature, and greatly extend the service life.
3. It is an impacting dedusting and desulphurizer, which makes the flue gas directly impact the water surface, saves water and reduces pollution. It is convenient for operation and maintenance, low in operation cost and good in dewatering. It is a kind of economical and practical Boiler Dust Collector.
A summary of dust remover for coal-fired boiler:
The dust collector of coal-fired boiler is specially used for waste gas treatment of all kinds of large and medium sized coal-fired boilers, and has strong handling capacity for sulfur, high temperature and high humidity gas. The dust collector has anticorrosion treatment. The filter bag is resistant to acid and alkali, is resistant to high temperature and waterproof. The skeleton is treated with silicone. The capacity is strong, the area is small, the wind speed is high, the life of filter bag is long, the filtering precision is high, and the discharge concentration under normal condition can reach to less than 30mg/m3. The filter bag can be used for 24 consecutive months, with high automation level, on-line detection and maintenance, and simple operation. It is the choice of exhaust gas treatment for coal-fired boilers in recent years. At present, coal-fired boilers occupy the overwhelming majority in the power and heating industry. The dust remover of coal-fired boiler is basically applied to electrostatic precipitator. But with the increasing demand of national environmental protection and the extensive application of electrostatic precipitator, its weakness is also gradually exposed.
The principle of dust cleaning in the dust remover of coal fired boiler:
The dust gas is entered by the upper inlet of the ash bucket. Under the action of the windshield, the air flow wind plate flows upwards, the flow velocity is reduced, and some large particle dust is separated and fall into the ash bucket because of the action of the inertia force. The dust gas enters the middle box of the box, the filter bag filter, the dust is hinded to the outer surface of the filter bag, the gas after the purification enters the upper box through the filter bag, and is excluded by the outlet. With the increase of dust on the surface of the filter bag, the pressure difference between the inlet and outlet of the dust collector is also increasing. When the resistance of the dust collector reaches the set value, the control system sends out the ash removal instruction, and the ash cleaning system starts to work. First, the solenoid valve is opened immediately after receiving the signal to remove the compressed air in the upper gas chamber of the small diaphragm. Due to the change of the force at both ends of the small diaphragm, the exhaust passage closed by the small diaphragm is opened, the compressed air in the upper gas chamber of the large diaphragm is removed from the passage, and the forces at both ends of the film are changed, so that the action of the large diaphragm is closed and lost. The outlet is opened, the compressed air in the air bag is output into the bag port through the output pipe and the spray pipe, and the ash is cleaned. When the control signal is stopped, the solenoid valve is closed, the small diaphragm and the large diaphragm are reset successively, and the injection is stopped.
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