A double chamber kiln with low power consumption

Abstract

The invention relates to a double-chamber kiln with low power consumption, which is composed of an inner cylinder and an outer cylinder, the inner cylinder and the outer cylinder form an annular kiln chamber, and the annular kiln chamber includes a feeding device, a distributor, a combustion-supporting air / flue gas port, and a preheating zone. , Calcination belt, fuel injection inlet, inner tube flue gas port, inner tube partition, inner tube flue gas chamber, inner tube flue gas connection channel and discharge device. The feeding device is at the uppermost end of the annular kiln chamber, and the distributor is at the lower part of the feeding device, which is connected by the kiln mouth sealing device. In the kiln chamber, the fuel injection pipe is arranged at the middle and upper part of the outer cylinder of the annular kiln chamber, the flue gas chamber of the inner tube is arranged at the lower part of the annular kiln chamber, and the discharge device is arranged at the bottom of the annular kiln chamber. The invention divides the inner cylinder flue gas chamber through the inner cylinder partition, and the two inner cylinder flue gas chambers are connected through the flue.

Description

technical field [0001] The invention belongs to the technical field of industrial lime kilns, and in particular relates to a double-chamber kiln with low power consumption. Background technique [0002] Maerz lime kiln, also known as parallel flow regenerative lime kiln, is a vertical kiln composed of two kiln barrels connected by passages. Maerz parallel flow regenerative double-chamber lime kiln has two kiln chambers, two kiln chambers Alternately calcining and preheating the ore, there is a connecting channel between the bottom of the calcining zone of the two kilns to communicate with each other, and the direction is changed every 15 minutes to change the working state of the kiln. During operation, the two kiln chambers are alternately loaded with ore, and the fuel is fed from the upper part of the two kiln chambers respectively, and the fuel is evenly distributed on the entire section of the kiln chamber through multiple spray guns installed at the bottom of the prehea...

AI Technical Summary

Problems solved by technology

However, in the traditional Maerz kiln, because the annular flue gas passage is located around the kiln body, the flue is small in size, complex in structure, easy to block, and easy to damage refractory materials during cleaning.

At the same time, the material flow resistance in the traditional Maerz kiln is high, so the pressure of the fan is high, the power consumption of the product is high, and the fuel with a lower calorific value cannot be used.

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