Novel countercurrent stepped solid waste pre-calcining device for dry-process clinker line decomposing furnace

Abstract

The invention discloses a novel countercurrent stepped solid waste pre-calcining device for a dry clinker line decomposing furnace in the field of solid waste pre-calcining devices.The countercurrent stepped solid waste pre-calcining device comprises a countercurrent stepped calcining furnace and an air cannon, and the lower right portion of the countercurrent stepped calcining furnace is in a stepped shape; an air cannon is arranged at each step on the outer side of the countercurrent step type calcining furnace, the air cannon is used for blowing solid waste to turn over and enter the next step from the previous step, a ventilation opening communicated with the decomposing furnace is formed in the left lower part of the countercurrent step type calcining furnace, and a solid waste discharging pipe is arranged at the top of the countercurrent step type calcining furnace; an air outlet pipe communicated with the upper part of the decomposing furnace is arranged at the right upper part of the countercurrent stepped calcining furnace; according to the device, solid waste can be dispersed and fully combusted, and a guarantee is provided for normal operation of a system and a production line.

Description

technical field [0001] The invention relates to the field of solid waste pre-calcination devices, in particular to a countercurrent stepped solid waste pre-calcination device for a novel dry-process clinker line decomposition furnace. Background technique [0002] Cement kiln mainly adopts two calcining methods to dispose of solid waste, one is to send the compatible solid waste into the rotary kiln through pumps, and the other is to send the compatible solid waste directly to the decomposition furnace. Both of the above two methods can Solid waste and hazardous waste are sent to the high temperature zone for calcination, but there are the following problems: [0003] (1) Due to the high content of solid waste; the solid waste directly falls somewhere in the calcination equipment and burns intensively, resulting in local high-temperature skinning of the calcination system, which affects the normal operation of the production line; [0004] (2) The composition of solid waste...

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Problems solved by technology

[0003] (1) Due to the high content of solid waste; the solid waste directly falls somewhere in the calcination equipment and burns intensively, resulting in local high-temperature skinning of the calcination system, which affects the normal operation of the production line;

[0004] (2) The composition of solid waste is not uniform, resulting in insufficient combustion, and post-combustion occurs in the calciner, which leads to CO fluctuations in the system and affects system operation;

[0005] (3) The dispersion of solid waste is not good, which affects the quality of clinker

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