A preparation method of activated carbon catalyst for flue gas desulfurization and denitrification

Abstract

The invention discloses a preparation method of an activated carbon catalyst for flue gas desulfurization and denitrification, and belongs to the technical field of flue gas treatment. The activated carbon catalyst preparation method includes the following steps: (1) TiO 2 Doping Cu: Add copper salt to the titanium alkoxide solution, heat it in a water bath to form a gel, dry the gel and then grind and sinter it to obtain Cu-doped TiO 2 Powder; (2) Activated carbon supported Cu doped TiO 2 : Cu doped TiO 2 Add the powder, dispersant and binder to water, immerse activated carbon in it, vibrate with ultrasonic, dry and heat up to 400-450°C at a rate of 3-6°C / min, keep warm, and cool to obtain loaded Cu-doped TiO 2 of activated carbon catalyst. The desulfurization and denitrification rates of the obtained catalyst reached more than 93.2% and 88.7% respectively. After regeneration treatment, the regeneration desulfurization and denitrification rates reached more than 88.4% and 83.8%, and the obtained catalyst did not have any toxicity.

Description

technical field [0001] The invention belongs to the technical field of flue gas treatment, and specifically relates to a catalyst for flue gas desulfurization and denitrification, in particular to a method for preparing an activated carbon catalyst for flue gas desulfurization and denitrification. Background technique [0002] The flue gas emitted by coal boilers and thermal power plants contains various harmful components such as sulfur dioxide, nitrogen oxides, and dust, which pose a serious threat to my country's natural resources, ecosystems, and public health. Therefore, the corresponding environmental protection regulations require their emissions Getting stricter. [0003] Flue gas pollutant emission control technology is mainly to reduce SO in industrial flue gas 2 and NO X In order to reduce the damage to the environment caused by the pollutants emitted by industrial development, in the emission control technology of flue gas pollutants, SO 2 The removal technolog...

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Problems solved by technology

[0007] The preparation method of the above-mentioned carbon-based desulfurizer is relatively complicated, requiring more raw material components, and it does not mention whether the prepared catalyst also has the ability to remove nitrogen oxides

[0008] Patent CN102527369A discloses an activated carbon-supported rare earth metal oxide reduction denitration catalyst. The catalyst uses activated carbon as a denitration catalyst carrier, and uses rare earth metal cerium, or a dual component of lanthanum and cerium as a catalytic active component, to reduce nitrogen oxides. It has high denitrification efficiency, but the catalyst uses rare earth metals with high price as the catalyst active component, and it does not mention whether it also has good desulfurization efficiency

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