An annular tunnel kiln with tail gas treatment system

Abstract

The invention discloses an annular tunnel kiln with a tail gas treatment system. The annular tunnel kiln comprises a tunnel kiln body, a furnace bottom, a rail and a smoke outlet pipeline. The tunnelkiln body is overall annular, a feeding opening is formed in one end of the tunnel kiln body, and a discharging opening is formed in the other end of the tunnel kiln body. A hearth is arranged in thetunnel kiln body, and a drying chamber, a preheating chamber, a roasting chamber, a firing chamber and a cooling chamber are sequentially arranged in the hearth of the tunnel kiln body from the feeding opening to the discharging opening. The annular rail is laid at the bottom of the tunnel kiln body, and the furnace bottom is arranged at the bottom of the tunnel kiln body. According to the annulartunnel kiln, when the smoke outlet pipeline fixedly connected with the tunnel kiln body rotates along the rail, a center pipeline in the circle center of the rail does not move, smoke can only pass through the center pipeline, the smoke is guided into a second transition pipeline located underground and penetrates the rail, the smoke is fed in a desulfuration and dust removal tower through a smoke extracting fan, and the smoke is discharged into a chimney through the desulfuration and dust removal tower to be discharged into air.

Description

technical field [0001] The invention relates to a tunnel kiln, in particular to an annular tunnel kiln with a tail gas treatment system. Background technique [0002] At present, there are mainly two types of kilns for sintered brick products in my country: wheel kiln and tunnel kiln. The loading and discharging of wheel kiln is carried out in the kiln chamber, and the working environment is extremely harsh. The bricks of the tunnel kiln are placed on the kiln car. Moving inside the kiln, bricks can be loaded out of the kiln, and the working conditions of the workers have been greatly improved, but a large number of kiln cars and operating equipment are required. Compared with the wheel kiln with the same section, the investment cost is much higher than that of the wheel kiln. Many; the existing fixed tunnel kiln desulfurization and dust removal devices are mainly designed for tunnel kilns with fixed structures, while the mobile tunnel kiln for sintering bricks is a new type o...

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