Coal grinding head and tail pulverized coal bin dedusting system

Abstract

A dust removal system for the coal mill head and the tail coal powder bin includes a coal mill tail coal powder bin device and a coal mill tail coal powder bin device: the coal mill head coal powder bin device includes the head coal bin, and the first coal bin located at the lower end of the first coal bin The first rotor is called, the lower end of the first rotor is connected with the head coal transfer bin, the head coal bin straight pipe and the head coal bin fan are respectively connected with the head coal transfer bin, the head coal bin straight pipe is connected with the dust bag; The bunker device includes the tailing coal bunker and the second rotor scale located at the lower end of the tailing coal bunker. The lower end of the second rotor scale is connected with the tailing coal transfer bunker. The pipeline of the tailing coal bunker is connected with the dust collection bag; the straight pipe of the head coal bunker is not connected with the pipeline of the outlet tailing coal bunker. The invention has the advantages of not only fundamentally solving the problem of cross-winding in the coal pipeline at the head and tail, but also greatly reducing the coal consumption of clinker, stabilizing the kiln condition, and greatly improving the calcining quality of the clinker.

Description

technical field [0001] The invention belongs to a transformation measure designed to improve the problem of coal breakage caused by air flow from the tail coal bunker pipeline to the head coal bunker pipeline in the cement rotary kiln system, and specifically relates to a rotor scale at the bottom of the head and tail coal bunker. The first coal bunker pipeline and the tail coal bunker pipeline on the top are no longer connected, and the two are separated to lead to the pipeline for bag dust collection. Background technique [0002] In the traditional cement process, the vertical coal pulverized coal is discharged from the head and tail coal bunker, and then measured by the rotor scale at the bottom of the bin, and then blown by the Roots blower to blow the coal powder to the burner at the kiln head and the calciner at the kiln tail respectively. On the rotor scale at the bottom of the head and tail coal bunkers, there are pipes connecting the head coal bunker and the tail c...

AI Technical Summary

Problems solved by technology

Since the power of the tail coal bunker fan is greater than that of the head coal bunker, if the tail coal bunker pipe passes air to the head coal bunker pipe, a positive pressure will be generated in the head coal bunker pipe, thereby holding the pulverized coal coming down from the head coal bunker so that it cannot Entering the rotor scale will lead to coal breakage, which is not conducive to calcination in the kiln, not only greatly increases coal consumption, but also has a great negative impact on the quality of clinker

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