Structure for blowing adhered air to furnace body in segmented manner

Abstract

The invention discloses a structure for blowing adhered air to a furnace body in a segmented manner. The structure comprises an air flue, a furnace body, and an air inlet. The air flue is arranged outside the furnace body, and the air inlet is arranged on the air flue. The structure further comprises an adhered air flue, a baffle and an inlet hole. The baffle passes through one end of the inlet hole and is fixedly connected with the middle part of the adhered air flue. The other end of the baffle is fixedly connected with the air flue. Adhered air flues are arranged close to the furnace body at an interval of 3m. When the adhered air flue is erupted from a nozzle, the adhered air flows along the adhered air flue and is not easily entrained by main wind, so as to supplement sufficient oxygen to the surface of a water wall. The structure can better prevent and treat high temperature corrosion of the water wall, and meanwhile, further effectively prevents the hearth from scorification.

Description

[0001] technical field [0002] The invention belongs to the technical field of boiler combustion devices, and in particular relates to a structure for sending wall-attached wind into a furnace body in sections. [0003] Background technique [0004] The high-temperature corrosion of boiler water-cooled wall will bring harm to the safe operation of the boiler. The root cause of this high-temperature corrosion is that there is a strong reducing atmosphere on the water-cooled wall. There are many ways to avoid high-temperature corrosion in boiler combustion. At present, the effective method is to add wall-attached air nozzles with dual-scale combustion technology-specific wall-attached jets to the secondary air nozzles of nodes to supplement oxygen to the water-cooled wall surface. It can effectively improve the oxidative atmosphere in the near wall area, thereby preventing the high temperature corrosion of the water wall, increasing the ash melting point, and greatly reducin...

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Problems solved by technology

[0006] In order to overcome the above-mentioned defects existing in the prior art field, the object of the present invention is to provide a wall-adhering wind into the furnace structure in sections, so as to solve the problem of oxygen supplementation caused by the wall-adhering wind being easily sucked by the main wind in the prior art. The amount is not enough, the oxidizing atmosphere in the area near the furnace wall cannot be effectively improved, and the effect of preventing high-temperature corrosion of the water-cooled wall and furnace slagging cannot be achieved.

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