Blaze insulating fluidized forge furnace

Abstract

The invention relates to a flame-insulated fluidized calciner, which relates to the technical field of calcining equipment. The present invention indirectly heats the fluidized bed calciner by using the high temperature flame during combustion, avoiding the direct contact between the flame and the material, and effectively overcoming the phenomenon of overburning of the calcined material in the furnace. The channel enters the furnace as a fluidizing gas, which heats the inside and outside of the furnace of the fluidized calcination furnace, and the heating time is doubled. Compared with the direct combustion heating fluidized calcination furnace with a combustion chamber at the bottom, the thermal efficiency is greatly improved. The average residence time of materials in the flame-tight fluidized calciner of the present invention can be adjusted from several seconds to several hours, the furnace temperature can be adjusted from 500°C to 1300°C, and the furnace temperature difference is within ±5°C. The flame-insulated fluidized calciner of the invention has fast heat transfer and mass transfer, uniform temperature in the furnace, and low energy consumption.

Description

technical field [0001] The invention relates to a flame-insulated fluidized calciner and a use method thereof, which relate to the technical field of calcining equipment. Background technique [0002] At present, calcining equipment includes fluidized bed calcining furnace, rotary kiln, multi-layer furnace, tunnel kiln and so on. For the calcination of powder materials, the fluidized bed calciner has fast material heat transfer and mass transfer, low energy consumption, and large production capacity of a single equipment, but the existing fluidized bed calciner heating method is directly heated inside the furnace or a combustion chamber is set outside. , which leads to the following problems: First, the fuel burns in the furnace, the flame is in direct contact with the material, the flame stability is poor in the dense phase, and the local temperature in the furnace is too high, which makes the surrounding material heated to a high temperature, resulting in overburning of th...

AI Technical Summary

Problems solved by technology

For the calcination of powder materials, the fluidized bed calciner has fast heat transfer and mass transfer, low energy consumption, and large production capacity of a single equipment, but the existing fluidized bed calciner heating method is directly heated inside the furnace or a combustion chamber is set outside. , which leads to the following problems: First, the fuel burns in the furnace, the flame is in direct contact with the material, the flame stability is poor in the dense phase, and the local temperature in the furnace is too high, which makes the surrounding material heated to a high temperature, resulting in overburning of the material; in addition, When the fuel is burned in the external combustion chamber, the heat is released to the outside, and the heat dissipation is large, and the effective utilization rate of heat is reduced.

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