Waste gas afterheat boiler for ore heat furnace

Abstract

The invention discloses a waste gas afterheat boiler for an ore heat furnace, comprising a furnace barrel, a superheater, a coal economizer, a steel support, a smoke inlet device, a smoke outlet device, a front water-cooling wrapped wall, a middle water-cooling partition wall and a back water-cooling wrapped wall, wherein a cavity front room consists of the front water-cooling wrapped wall and the middle water-cooling wrapped wall, a tube bundle region back room consists of the middle water-cooling wrapped wall and the back water-cooling wrapped wall, and a full water-cooling wrapped dual-room structure consists of the cavity front room and the tube bundle region back room. The waste gas afterheat boiler has the beneficial effects that an ore heat kiln waste gas afterheat boiler adopts a combined type full water-cooling wrapped dual-room structure, is free of a horizontal smoke flue, jointly uses one water-cooling partition wall, is large in space, makes the most of radiant heat, is good for using high-temperature smoke, and is free of an accumulated ash attaching body, so that the difficulties of ash accumulating and coking on a heating surface can be effectively solved, and the afterheat use ratio can be improved.

Description

Technical field: [0001] The invention relates to a waste heat boiler which recovers high-temperature flue gas waste heat produced in the production process of industrial silicon submerged arc furnaces and generates steam through heat exchange for power generation. Background technique: [0002] The existing silicon ore production process uses direct evacuation of the high-temperature flue gas generated during the production process or uses small boilers with low thermal efficiency or a small number of forced circulation waste heat boilers with high operating costs and unstable safety. Evacuation obviously wastes resources, causes thermal pollution of the environment, and cannot meet the requirements of the country for energy conservation and emission reduction. Other measures have relatively low energy utilization rates and high costs, and the economic benefits are not obvious. Invention content: [0003] The object of the present invention is to provide a submerged arc fu...

AI Technical Summary

Problems solved by technology

[0002] The existing silicon ore production process uses direct evacuation of the high-temperature flue gas generated during the production process or uses small boilers with low thermal efficiency or a small number of forced circulation waste heat boilers with high operating costs and unstable safety. Evacuation is obviously a waste of resources, causing thermal pollution of the environment, which cannot meet the national requirements for energy conservation and emission reduction. Other measures have relatively low energy utilization and high cost, and the economic benefits are not obvious.

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