A device for dredging the pores of honeycomb regenerated SCR catalyst

Abstract

The invention discloses a device for dredging a honeycomb regenerated SCR catalyst pore. The device comprises a drilling bit, a gas guide channel assembly and a liquid accumulator, wherein the drilling bit is used for loosening dirt blocking the catalyst unit pore; the gas guide channel assembly is provided with a switch assembly; the liquid accumulator is used for storing a cleaning solution; one end of the gas guide channel assembly is connected with the drilling bit through a rotary joint while the other end of the gas guide channel assembly is connected with an air compression device; one end of the liquid accumulator is connected with the air compression device through the gas guide channel assembly while the other end of the liquid accumulator is connected with the drilling bit through the gas guide channel assembly; the drilling bit is of a hollow structure and is communicated with a pipeline assembly; an air outlet is formed in the side wall of the drilling bit. Dirt blocking the catalyst pore is loosened during the rotating process of the drilling bit, the situation that the wall of the catalyst pore is broken caused by direct dredging can be avoided; the drilling bit is of the hollow structure, and is connected with the liquid accumulator and the air compression device through the gas guide channel assembly; the air and the cleaning solution are sprayed through the air outlet in the drilling bit under the control of the switch assembly.

Description

technical field [0001] The invention relates to a device for removing dirt in a honeycomb channel, in particular to a device for dredging the channel of a honeycomb regenerated SCR catalyst. Background technique [0002] At present, my country's thermal power plants generally use honeycomb SCR denitrification catalysts to denitrify boiler flue gas. The SCR denitration system generally adopts a high-dust arrangement. After a long period of use, the catalyst pores are prone to blockage, resulting in an increase in the pressure drop of the denitration system and a decrease in the out-of-stock efficiency. Therefore, in the catalyst regeneration process, it is necessary to completely remove the dirt in the catalyst pores, restore the specific surface area of ​​the catalyst, and provide conditions for the subsequent deep removal of poisoning substances on the catalyst surface. [0003] During the SCR catalyst regeneration process, manufacturers generally use compressed air to blo...

AI Technical Summary

Problems solved by technology

The device has the following problems in the process of module regeneration: 1. The catalyst soaks for a long time, which easily causes the strength of the catalyst unit to decrease, and the catalyst unit is damaged during the rotation process.

2. Prolonged immersion leads to a large water content in the treated catalyst unit, resulting in swelling

During the heat treatment process, the catalyst unit shrinks with the evaporation of water and produces stress, which is prone to cracking of the catalyst unit and reduces the yield of the catalyst module during regeneration.

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