Multi-purpose fluidized bed type combustion boiler for full-reducing atmosphere and system

Abstract

The invention discloses a multi-purpose fluidized bed type combustion boiler for full-reducing atmosphere and a system. A furnace hearth, an upper heating chamber and a lower heating chamber are sequentially partitioned by a blasting heat-resistant steel bottom plate and heating chamber partitioning boards from top to bottom in an inner chamber of a combustion boiler body; a heat exchange ring pipe is arranged in the lower heating chamber; a plurality of air caps are arranged on the blasting heat-resistant steel bottom plate, and air inlets of the air caps penetrate through the heating chamber partitioning boards through blasting pipes and communicate with the heat exchange ring pipe; a plurality of blanking holes are formed in the blasting heat-resistant steel bottom plate and is connected with blanking reaction pipes in correspondence with the blanking holes; the blanking reaction pipes penetrate through the heating chamber partitioning boards and lead to a collection hopper which is arranged at the bottom of the furnace body; and a plurality of heating chamber burner nozzles are uniformly arranged in the upper and lower heating chambers. The device and the system disclosed by the invention have the characteristics of being continuous in production, high in heat efficiency, stable in furnace temperature, uniform in calcination temperature, easy for control of temperature and balanced in quality; and moreover, the fluidized bed type combustion boiler device system for full-reducing atmosphere is provided.

Description

technical field [0001] The invention belongs to the field of metallurgical equipment, and in particular relates to a multipurpose fluidized bed fluidized bed furnace device and system with fully reducing atmosphere. Background technique [0002] The traditional fluidized bed fluidized bed furnace is a thermal equipment that continuously roasts solid raw material particles under fluidization. Fluidized fluidized furnace is mainly used to process a type of furnace with ore particle size of 0-6mm. Because the solid particles are suspended in the air flow, the contact area between the gas phase and the solid phase is large, so the thermal decomposition speed is fast and the thermal efficiency is high. The roasting temperature is uniform, the furnace temperature is easy to control, the product activity is high, and the quality is balanced. The solid fuel is held up by the upward flow of air in the furnace, rolls up and down within a certain height range, and burns in a fluidize...

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Problems solved by technology

[0006] Fluidized fluidized furnaces are used more and more widely. However, traditional fluidized fluidized bed furnaces are all fluidized furnaces with an oxidizing atmosphere, and it is not yet possible to perform anaerobic reduction roasting on materials. That is to say, there is no deep reduction fluidized bed type fluidized bed furnace yet

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