Negative-pressure air inlet cooling device for suspension cylinders of Maerz kiln

Abstract

The invention discloses a negative-pressure air inlet cooling device for suspension cylinders of a Maerz kiln. The negative-pressure air inlet cooling device comprises two suspension cylinders connected in parallel through suspension cylinder air inlet pipes and a dust remover box body which is connected with air outlet pipes of the two suspension cylinders, the air outlet pipes are combined and then divided into three branches, a branch I is sequentially connected with the dust remover box body and a flue gas dust removal induced draft fan after passing through an electric control valve I, abranch II is sequentially connected with a suspension cylinder induced draft fan and an electric valve through a pneumatic valve I, a sub-branch is arranged between the pneumatic valve I and the suspension cylinder induced draft fan and is connected between the control valve I of the branch I and the dust remover box body, a second pneumatic valve is arranged on the sub-branch, a third branch is sequentially connected with a diesel fan and a second manual valve through a first manual valve, and the cooling process comprises the step that a suspension cylinder induced draft fan start cooling mode and a suspension cylinder induced draft fan stop cooling mode are set in normal operation. According to the negative-pressure air inlet cooling device for the suspension cylinders of the Maerz kiln, the problems that an existing Maerz kiln with the suspension cylinders is high in production and operation risk and low in kiln production stability can be solved.

Description

technical field [0001] The invention relates to the technical field of iron and steel manufacturing equipment, in particular to a negative pressure air inlet cooling device for a hanging cylinder of a Maerz kiln. Background technique [0002] The hanging cylinder system is the key core equipment of Maerz kiln, so its cooling device is very important, such as figure 1 , figure 2 The suspension cylinder fan unit 1 that includes a plurality of fans connected in parallel, two suspension cylinders 3 connected in parallel through the suspension cylinder air inlet pipe 2, and the air outlet pipes 4 of the two suspension cylinders 3 are combined and connected. After being connected, they are divided into two branches, one The branch is connected to the combustion-supporting air pipe 6 through the shut-off valve 1, and then passes through the combustion-supporting air reversing valve 24 of the Maerz kiln, the flue gas extraction pipe of the kiln body, and connects the dust collecto...

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a Maerz kiln hanging cylinder negative pressure air inlet cooling device to solve the problems of high production and operation risk and low kiln production stability of the existing Maerz kiln with hanging cylinder

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