Automatic purging system for carbon black flue gas desulfurization oxidation air pipeline

Abstract

The invention discloses a carbon black flue gas desulfurization oxidation air pipeline automatic purging system, which comprises a desulfurization tower, an oxidation fan and a PLC controller, the air outlet end of the oxidation fan is connected with an oxidation air main pipe, the desulfurization tower is provided with an oxidation air branch pipe entering the desulfurization tower from top to bottom, the inner end of the oxidation air branch pipe is provided with an air outlet pipe, and the air outlet pipe is connected with the PLC controller. A plurality of downward air outlet nozzles are arranged in the air outlet pipe, a water inlet pipe communicated with each oxidation air branch pipe is arranged at the front end of each oxidation air branch pipe, an electromagnetic control valve is arranged on each water inlet pipe, and a flow meter corresponding to the interior of each oxidation air branch pipe is further arranged at the front end of each oxidation air branch pipe; and an electric cleaning mechanism for cleaning the air outlet nozzles on each air outlet pipe is arranged on the desulfurizing tower. The air outlet nozzle can be cleaned without shutdown, smoothness of an oxidation air pipeline of a desulfurization system is guaranteed, and efficient and stable operation of the desulfurization system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to an automatic purging system for carbon black flue gas desulfurization oxidation air pipeline. Background technique [0002] In the limestone-gypsum wet desulfurization system for carbon black flue gas, after the limestone slurry reacts with sulfur dioxide, the calcium sulfite generated needs to be oxidized into calcium sulfate by oxidizing wind, and then removed by a vacuum dehydrator. The existing oxidation air pipelines enter the desulfurization tower through a main pipe and then distribute them evenly. During the operation, the outlet nozzle of the oxidation air pipe is often blocked by the slurry, which affects the oxidation effect of the slurry in the desulfurization tower, causing The desulfurization efficiency drops, the gypsum released from the vacuum dehydrator has a large water content, and other problems can only be repaired after the desulfurization system is ...

AI Technical Summary

Problems solved by technology

The existing oxidation air pipelines enter the desulfurization tower through a main pipe and then distribute them evenly. During operation, the outlet nozzle of the oxidation air pipe is often blocked by slurry, which affects the oxidation effect of the slurry in the desulfurization tower, resulting in Decreased desulfurization efficiency, high water content in gypsum from the vacuum dehydrator, etc., can only be repaired after the desulfurization system is shut down

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