Cad of 440000 air flow bag filter a design chart
The prominent feature of the compartment low pressure pulse dust collector is to make full use of the dust collector space and adopt a number of unique structural designs. It is both a slow air duct and a settling chamber. 2. The boundary and design of the double row ash hopper are on the inlet centerline of the precipitator. After the flue gas enters the dust remover, large particles of dust fall directly into the ash hopper, which will not cause dust accumulation in the pipeline, and the ash hopper has a large volume. 3. No air volume regulating valve is designed for the air inlet of each bin, and reciprocating offline maintenance valve is set to reduce the valve resistance coefficient and failure point. 4. The built-in bypass system of the precipitator body is adopted. The bypass valve is electrically operated and pneumatically operated with automatic temperature control. The valve structure adopts single valve plate reciprocating type, and the smoke and dust leakage rate is zero, which will not lead to excessive emissions due to the leakage of bypass valve. The bypass system can effectively solve the damage of the filter bag caused by the excessive temperature of the tail flue gas due to the change of boiler load, thus protecting the filter bag. 5. Small caliber filter bags are used. The design diameter of the filter bags is φ 130mm. At the same time, every four filter bags are arranged with an area of 190X250mm in the center, which makes the open space outside the filter bags larger. The larger open space reduces the speed of the updraft and the amount of dust carried by the updraft, so that the dust accumulated on the filter bags is less, which reduces the total resistance loss, The lower resistance loss enables the filter bag to handle more dusty gas. Small caliber filter bag can reduce the amount of compressed air required to remove the dust on the filter bag and save a lot of compressed air. 6. Measures to avoid shaking and collision are taken at the bottom of the filter bag. It will not cause mutual friction between filter bags and extend the service life of filter bags. 7. There is no dust accumulation area and dead corner after the flue gas enters the dust remover, which will not cause pipe blockage. 8. The starting resistance of the precipitator is low (about 400Pa), which can extend the ash cleaning cycle, improve the service life of the filter bag, and reduce the operating cost.
