Activated coke for absorbing dioxin in flue gas and preparation method thereof

Abstract

The present invention relates to an activated coke for absorbing persistent organic pollutant like dioxin in flue gas and a preparation method thereof by using coal quality semi coke as a raw material. The preparation method is as follows: crushing the coal quality semi coke; impregnating the coal quality semi coke with an impregnating solution containing metal hydroxide or alkali metal carbonate activator and compound surfactant, and naturally drying; and finally activating the impregnated and dried semi coke at 800-950 DEG C to prepare the activated coke for absorbing dioxin in flue gas. The activated coke has characteristics of developed porous structure, low manufacturing cost and good adsorption effect, etc.

Description

technical field

[0001] The invention relates to an activated coke prepared from blue carbon and a preparation method thereof, in particular to an active coke for the adsorption of flue gas dioxins prepared from low-rank coal semicoke and a preparation method thereof, belonging to metallurgical waste gas treatment and related The field of waste gas treatment. Background technique

[0002] Dioxins, as persistent organic pollutants, are not only highly toxic, but also carcinogenic and mutagenic, and have genetic effects. As the "Stockholm Convention on Persistent Organic Pollutants (POPs)" (Stockholm Convention for short) came into force in my country on November 11, 2004, the flue gas produced by industrial processes such as waste incineration and metallurgy is persistent organic pollutants such as dioxins. Major source of organic pollutants (POPs). Although the removal of dioxins includes many methods such as physical adsorption and chemical decomposition, activated carbon a...

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