Regional control multi-stage turbulent fluidization reaction furnace

Abstract

The invention discloses a regional control multi-stage turbulent fluidization reaction furnace. The reaction furnace comprises a furnace body and a main combustion furnace, the furnace body comprises a reaction zone and at least one preheating zone, the preheating zone is arranged at the upper part of the reaction zone, gas distribution plates are arranged in the reaction zone and the preheating zone, the preheating zone and the reaction zone are separated into independent cavities through a separation plate, the preheating zone and the reaction zone are communicated through a reaction zone sealing valve, the hot flue gas discharged by the main combustion furnace is connected with the bottom cavity of the gas distribution plate of the preheating zone through a first hot smoke pipeline, and the bottom cavity of the gas distribution plate of the reaction zone is connected with a reaction gas inlet pipe. The partition is used for controlling the multistage turbulent fluidization reaction furnace, the material preheating zone and the reaction zone are completed in the same device, the structure is simple, the equipment configuration is compact, the occupied area is small, and the capital construction investment is saved.

Description

technical field [0001] The invention belongs to the field of metallurgy and mineral processing equipment and technology, and in particular relates to a fluidized reaction furnace. Background technique [0002] According to the relative movement of the material and the furnace wall in the reaction furnace, the gas-solid reaction can be divided into two reaction forms: accumulation reaction and fluidization reaction. Compared with the stacked reaction form, the gas-solid heat transfer, mass transfer and chemical reaction speed of the fluidized reaction process are fast, and the heat transfer and mass transfer efficiency is high, so that the time required for the fluidized reaction is shorter than the stacked reaction process. It is greatly shortened, the comprehensive energy consumption of the reaction is greatly reduced, and the quality of the reaction product is greatly improved. [0003] With the gradual increase of the operating gas velocity, the gas-solid fluidization un...

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Problems solved by technology

However, the rapid fluidized reaction furnace has the disadvantages that it cannot quickly separate the completely reacted and unreacted materials, the structure of the circulation equipment is huge, and the residence time of the materials in the roasting furnace is short.

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