A multi-purpose fluidized bed fluidized bed furnace and system with fully reducing atmosphere

Abstract

The present invention provides a multi-purpose fluidized bed fluidized bed furnace device and system with sufficient reducing atmosphere. The inner cavity of the fluidized bed furnace is divided into a furnace and an upper heating chamber from top to bottom by a blast heat-resistant steel bottom plate and a heating chamber partition. and the lower heating chamber; a heat exchange ring pipe is arranged in the lower heating chamber; a plurality of wind caps are arranged on the blast heat-resistant bottom plate, and the air inlet of the wind cap passes through the partition plate of the heating chamber to communicate with the heat exchanger through the blast pipe. Heat ring pipe: multiple blanking holes are provided on the blast heat-resistant bottom plate, and the blanking reaction tubes are connected to the corresponding blanking holes. The blanking reaction tubes pass through the heating chamber partition and lead to the The collecting hopper at the bottom of the body; multiple heating chamber burners are installed in the upper and lower heating chambers. The device and system of the present invention have the characteristics of continuous production, high thermal efficiency, stable furnace temperature, uniform roasting temperature, easy temperature control, and balanced quality, and it is also a fluidized bed fluidized bed furnace device system with a fully reducing atmosphere.

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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