Replacing and sampling device for honeycomb-type denitrification catalyst

Abstract

The invention discloses a replacing and sampling device for a honeycomb-type denitrification catalyst. The replacing and sampling device comprises a plurality of unit acting assemblies acting on catalyst modules; the unit acting assemblies act on to-be-ejected units or units at the peripheries of the to-be-ejected units; and each unit acting assembly comprises a driving shaft, a supporting plate and a fastener, the fastener is mounted on an external bracket of each catalyst module, a limiting hole is formed in the fastener, the driving shaft is connected with the fastener by the limiting hole,one end of the driving shaft passes through the limiting hole and acts on the supporting plate, and the other end of the driving shaft is connected with a power unit. The replacing and sampling device disclosed by the invention realizes replacement and sampling of the units of the honeycomb-type denitrification catalyst, also plays a role in fixing the peripheral units and prevents the nearby units from loosening and falling off.

Description

technical field [0001] The invention relates to the technical field of boiler flue gas denitration, in particular to a honeycomb denitration catalyst replacement and sampling device. Background technique [0002] At present, my country's thermal power plants generally use honeycomb SCR denitrification catalysts to denitrify boiler flue gas. The honeycomb denitration catalyst is assembled from several units to form a module for use. In actual use, due to reasons such as uneven flow field and soot wear, a small number of catalysts will be worn and broken. If they are not replaced in time, the broken catalyst will further deteriorate the flow field and seriously affect the efficiency of the denitrification system. Generally, only a small number of catalysts are damaged, and when most of the catalysts are still in their lifetime, the cost of replacing the entire catalyst module will increase significantly. Therefore, the damaged catalyst can be replaced to ensure a better effe...

AI Technical Summary

Problems solved by technology

Due to the tight assembly of each unit in the catalyst module, it cannot be taken out by hand

If the existing mechanical power device is used to forcibly take out the catalyst unit, regardless of whether it is suitable for the sampling of the honeycomb denitration catalyst unit, it will even affect the surrounding catalyst unit, which is prone to loosening and falling

[0004] Chinese patent CN 106198096A discloses a sampling device, but the device can only be used for vertical sampling of the catalyst module; the unit body around the sampling unit is also easy to loosen and fall; and the device has a complicated structure, limited working space, and poor flexibility. Difficult for field replacement of catalyst cells

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