A method and system for harmless treatment of waste plate catalysts

Abstract

The invention discloses a harmless treatment method and a treatment system for a waste plate type catalyst. The harmless treatment method comprises the steps of crushing and separating the waste plate type catalyst, and classifying products through a magnetic separator. In the separation step, catalyst metal structures obtained by classification are put into a smelting furnace with the temperature of more than 1,500 DEG C and then can be secondarily recycled; in a separation process, a classified catalyst body is put into am incinerator so as to be incinerated to 1,200-1,300 DEG C; furnace slag is buried; meanwhile, toxic and harmful smoke gas generated by incineration is treated. Due to the harmless treatment method, no new pollutant is generated, and the method is convenient to implement; a special technical requirement on an operator is not needed; the harmless treatment method is suitable for large-scale popularization and application and has an extremely high industrial popularization value; the harmless treatment method and the treatment system have high environmental, economical and social benefits and has a wide development prospect.

Description

technical field [0001] The invention relates to a method for harmless treatment of solid waste, in particular to a method and system for harmless treatment of waste plate catalysts. Background technique [0002] Nitrogen oxides NO emitted from power plant boiler system X It is one of the main air pollutants that promote the formation of acid rain. Selective Catalytic Reduction (SCR) is the NO X It is the most widely used flue gas denitrification technology in control engineering. In the SCR system, the catalyst plays an important role. The mainstream catalysts for flue gas denitrification in power plants are plate and honeycomb catalysts. The plate type denitration catalyst is based on a thin stainless steel screen plate, and the active ingredient is coated on the surface of the stainless steel screen plate under pressure, and the coated catalyst sheet is folded and cut into a single plate as required, and the folds are cut The single plates are assembled into a catalyst ...

AI Technical Summary

Problems solved by technology

[0003] In an ideal state, the denitrification catalyst can be used for a long time, but in the actual operation of the SCR device, various reasons may lead to a decrease in catalyst activity and a shortened life

With the increase of the service time of the catalyst, the catalyst will not only undergo thermal aging, but will also lose some or all of its activity due to the poisoning of certain poisons; it will also be accumulated or blocked by some pollutants such as oil, coke, etc. on the active surface of the catalyst. Catalyst pores reduce activity

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