System and adjustment method for flue gas flow balance adjustment of dust collector in thermal power plant

Abstract

The invention discloses a system and a method for adjusting smoke flow balance of a dust collector of a thermal power plant. The system comprises a control system, an air volume detection device and flow adjustment devices, wherein the control system is used for receiving smoke flow information at outlets of all chambers of the dust collector and controlling the flow adjustment devices at inlets of all the chambers of the dust collector respectively; the air volume detection device is used for collecting the smoke flow information at the outlets of all the chambers of the dust collector; the flow adjustment devices are used for adjusting the air feeding amounts at the inlets of all the chambers of the dust collector. According to the system, the smoke flow between different chambers of the dust collector can be automatically balanced, so that the smoke flow flowing through each compartment is basically the same; the defect that the smoke flow distribution between different chambers of the existing dust collector is non-uniform is overcome, so that the smoke of a filtering bag in each chamber is balanced with actual force of each ash bin pump, the integral efficiency of the dust collector can be improved, and the service life of the filtering bag can be prolonged.

Description

technical field [0001] The invention relates to the field of adjusting the amount of flue gas processed in each chamber of a dust collector in a thermal power plant, in particular to a system and method for adjusting the balance of flue gas volume of a dust collector in a thermal power plant. Background technique [0002] The dust collector system of the existing thermal power plant is usually arranged in 4 rooms. In actual operation, the amount of flue gas processed by each room varies greatly, and the measured deviation can reach 50%. The deviation of flue gas volume will lead to high flue gas flow rate in some chambers, lower overall dust removal efficiency, and make the actual output of each ash bin pump in the ash removal system inconsistent with the design, resulting in the problem of poor ash removal. Especially for the bag filter, the deviation of the flue gas volume between different rooms will lead to a low life of the filter bag in the room with a large flue gas v...

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Problems solved by technology

[0003] The object of the present invention is to provide a system and method for adjusting the balance of flue gas volume of dust collectors in thermal power plants, which can automatically balance and adjust the flue gas flow rates between different chambers of dust collectors, so that the flue gas volumes flowing through each compartment are basically the same. Overcome the shortcomings of the uneven distribution of flue gas flow between different chambers of the existing dust collector, and balance the flue gas flow through the filter bags of each chamber with the actual output of each ash bin pump, which can improve the overall efficiency of the dust collector and the service life of the filter bags

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