Xuzhou Power Generation Co., Ltd. selects Jiangping bag dust collector to achieve environmentally friendly power generation

The bag dust collector is an important supporting equipment for thermal power plants. It can remove particulate smoke and dust in the flue gas discharged from coal-fired or oil-fired boilers, thereby greatly reducing the amount of smoke and dust discharged into the atmosphere, improving environmental pollution and improving air quality.

Xuzhou Power Generation Co., Ltd. purchased Jiangping Machinery’s rapping flat bag dust collector and pulse dust collector . After the dust collector was put into use, the customer maintained good communication with Jiang Ping and jointly discussed the vibration system of the dust collector.

Whether the rapping system (cycle, time, method) is reasonable has a greater impact on the dust removal efficiency of the dust collector.

The impact of the rapping cycle on the dust removal efficiency lies in whether the fallen dust blocks can be directly dropped into the ash hopper during dust cleaning. If the rapping cycle is too long and the dust is too thick, it will reduce the electrical conductivity of the charged dust on the plate and reduce the dust removal efficiency; if the rapping cycle is too short, the dust will be dispersed into powder and fall, causing larger secondary dust. That is, the dust deposited on the dust collection pole of the electrostatic precipitator will be taken out of the dust collector by the air flow again. Especially the secondary dust in the final electric field will greatly reduce the efficiency of the electrostatic precipitator.

There are many factors that lead to secondary dust, such as the specific resistance of the dust is too high, the flue gas flow velocity that generates the reverse corona dust collection electric field is unevenly distributed, or the turbulence and eddy currents generated by the flow velocity are too high. Therefore, it is required that the flue gas flow rate in the electric field does not exceed 3 m/s. Generally, the flue gas flow rate operating in the electric field is around 1.5 m/s, and the flue gas flow should be distributed as uniformly as possible. Excessive frequency of vibration cleaning is the main factor causing secondary dust emission in the dust collector. Following certain procedures, adopting appropriate test methods, establishing a correct rapping system, and strengthening the maintenance of the ash hopper discharge equipment to prevent the ash hopper outlet from being blocked can prevent the occurrence of secondary dust.