Vertical kiln

Abstract

The invention discloses a vertical kiln, comprising a fuel supply device, an ignitor, a temperature measuring device, an unloading and discharging device, a kiln chamber, a blower, a pipeline, a valve, refractory materials, refractory fibre materials, heat preserving and reinforcement materials, an iron panel, reinforced concrete materials, brick-concrete materials, a tail gas treating device, a kiln preheating chamber, a heating chamber and a cooling chamber, wherein, a preheating chamber is communicated with the heating chamber; the cooling chamber is communicated with the heating chamber; a feed inlet is arranged at the upper part of the preheating chamber; an air outlet of the preheating chamber is arranged at the upper part of the preheating chamber; a plurality of flame paths are arranged at the side wall of the preheating chamber; a plurality of air inlet channels are arranged at the side wall of the flame paths; the air inlet channel is communicated with the flame paths; a discharge hole is arranged at the lower part of the cooling chamber and is communicated with a discharge chamber which is provided with an unloading device. The vertical kiln utilizes hot convection, and vortex for combustion, saves more energy and protects environment, and can use various fuels, such as coal powder, gas and liquid and the like; the materials are heated evenly by utilizing vortex; the materials can naturally move to a preheating zone, a heating zone and a cooling zone by utilizing natural settlement; the vertical kiln of the invention can be used for firing various lump materials, such as cement, lime, alumina and flint clay and the like.

Description

technical field [0001] The invention relates to the field of kiln equipment, in particular to a shaft kiln. Background technique [0002] Existing shaft kilns are mostly used for producing cement, lime, roasting, and calcining various ores and massive materials, etc., which generally have high energy consumption, insufficient environmental protection emissions, low heat utilization rate, mixed coal combustion in the kiln, and poor fuel combustion. Sufficient, too much dust and harmful gas emissions, uneven temperature in the furnace and other problems. The cement shaft kiln has been ordered to stop using, and the shaft kiln technology has gradually withdrawn from the cement production industry. Contents of the invention [0003] The purpose of the present invention is to provide a shaft kiln with a new structure, which can make the fuel burn more fully, the energy utilization rate is higher, the emission is more environmentally friendly, and the harmful gas emission is gr...

AI Technical Summary

Problems solved by technology

[0002] Existing shaft kilns are mostly used for producing cement, lime, roasting, and calcining various ores and massive materials, etc., which generally have high energy consumption, insufficient environmental protection emissions, low heat utilization rate, mixed coal combustion in the kiln, and poor fuel combustion. Sufficient, too much dust and harmful gas emissions, uneven temperature in the furnace, etc.

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