Combined layout structure of four-outlet dust collector and double-row induced draft fan for rear flue air system in power plant

Abstract

The present invention relates to the joint layout structure of four outlets of dust collectors and double-row induced draft fans for power plants, including four outlets of dust collectors, induced draft fan structure, desulfurization absorption tower, wet electrostatic precipitator and chimney, and the induced draft fan structure consists of two One set of induced draft fans constitutes a double-row induced draft fan structure, and the outlets of every two dust collectors are connected to the air inlet of one induced draft fan; the air outlets of the two induced draft fans are connected to one air inlet of the desulfurization absorption tower, and the air outlet of the desulfurization absorption tower passes through The wet electrostatic precipitator is connected to the air inlet of the chimney; the desulfurization absorption tower is a vertical structure, the air inlet of the desulfurization absorption tower is set at the lower part of the side wall, and the air outlet is set at the top; the induced draft fan structure and the outlets of the four dust collectors are set in the desulfurization absorption tower Between the chimney and the chimney, the structure of the induced draft fan is located below the outlets of the four dust collectors, the wet electrostatic precipitator is located above the outlets of the four dust collectors, the structure of the wet electrostatic precipitator is located directly above the induced draft fan, and the outlets of the dust collectors are arranged horizontally , the air inlet of the induced draft fan structure is arranged vertically, and the air outlet is arranged horizontally. The invention has low cost, less land occupation and good operation effect.

Description

technical field [0001] The invention relates to a joint layout structure of the rear flue air system of four outlets of a dust collector and a double-row induced draft fan for a power plant, and belongs to the technical field of power plant smoke exhaust and ventilation equipment. Background technique [0002] In a coal-fired thermal power plant project, the distance from the first column of the boiler to the center line of the chimney is one of the important land occupation indicators. Most of the equipment in the flue gas system is arranged behind the furnace, while the boiler room frame, front flue and dust collector The layout is relatively fixed, and the optimization of the layout after the furnace is mainly concentrated after the dust collector. Regarding the structural form of the flue air system after the dust collector, the main structural forms at home and abroad basically adopt the arrangement structure of each equipment, that is, the induced draft fan 1-2 is arra...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a power plant with four outlets and a double-row induced draft fan for dust collectors in order to solve the technical problems of the existing coal-fired thermal power plant, such as the layout of the equipment behind the dust collector, which occupies a large area, the flue is long, and the flue resistance is large. The joint layout structure of the rear flue air system

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