Working principle (1) pre separation: the dust gas discharged by the shaft kiln enters the inlet pipe of the dust collector center through the flue. Under the negative pressure of the dust removal system, the dust gas enters the bag chamber of the dust collector evenly over the center of the ash bucket. The coarse particle dust in the dust smoke is directly falling into the ash due to the blocking of the diversion plate and the effect of its own gravity. Fight to complete the pre separation of dust.
(2) filter: the dust gas enters the filter bag through the flower plate hole, the dust is intercepted on the inner surface of the filter bag, the dust gas is purify through filter bag filtration, the gas after the purification enters the bag chamber, and then through the lifting switch valve exhaust channel and the outgassing pipe, the air exhausting machine is discharged into the atmosphere. The dust collector is provided with a top air outlet and a negative pressure operated internal filter dust remover. The cleaning methods can be divided into two ways: setting time and setting resistance. Timing cleaning is according to the time program, each room according to the adjustable time parameters automatic rotation cleaning, dust collector period of 0 to 2.5 hours in six gear can be adjusted, each room ash cleaning time is 10 seconds to 3 seconds six minutes. The timing cleaning control is the inlet and outlet pressure difference sampling of the dust collector and the conversion of the differential pressure transmitter into the telecommunication number. The working process is as follows: the inlet, the outlet, the air inlet and pressure device, the differential pressure transmitter, the solenoid valve cylinder lifting switch valve, and the manual control relay, besides the above two control methods, the manual is also set to be manual. The control mechanism can carry out normal ash removal control manually. For operation and management convenience, timing cleaning method is recommended. Four. The temperature controlled furnace flue gas temperature fluctuates in the range of 60-300 degrees, and the moisture content of the flue gas fluctuates within the range of 4-12%, in order to prevent the dedusting bag from the deduster and the malignant accident such as burning bag because of the high temperature.
The following measures are taken in the dust collector system: (1) insulation measures must be taken in the intake pipe, body and ash hopper of the dust collector to prevent condensation of the dust collector. (two) there is a temperature detection and automatic alarm device installed in the intake port and exhaust port of the dust collector, and a cold air inlet device is installed at the intake port. Once the flue gas exceeds the temperature range of bag dust removal, an alarm is generated and automatic temperature control measures are taken to ensure the safe operation of the dust collector. (three) an electric heating and rapping device is installed on the ash hopper to avoid the problem of dust accumulation due to low temperature.
The Boiler Dust Collector is suitable for dust removal, smoke elimination and desulphurization. It has the characteristics of low resistance, flexible installation and layout, high desulfurization efficiency and long service life.
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