Comprehensive heat energy utilizing type active coke purifying and regenerating process system and active coke purifying and regenerating process method

Abstract

The invention discloses a comprehensive heat energy utilizing type active coke purifying and regenerating process system and an active coke purifying and generating process method. The process system comprises a regenerating device, a preheating device, a heating device and a heat exchanging device, wherein the regenerating device comprises a regenerating tower; the preheating device comprises a drying tower; the heating device comprises a hot-blast stove and a first fan; and the heat exchanging device comprises a second fan, a normal-temperature air input pipeline and a hot air output pipeline, wherein the second fan is used for sending the hot air after heat exchange to the drying tower so as to preheat the active coke. The method comprises the following steps: (1) preheating: preheating the active coke in the drying tower; (b) heating: heating the active coke due to the action of a high-temperature heat-conducting medium; (c) regenerating; and (d) cooling: cooling the regenerated active coke entering a cooling section. The system and method disclosed by the invention are suitable for restoring and regenerating the active coke.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment system and a treatment method for purifying and regenerating activated coke (activated carbon) used for desulfurization and denitrification. Background technique [0002] Activated coke (or activated carbon) flue gas desulfurization and denitrification technology belongs to the dry recovery process, which uses activated coke made of coal as a removal agent. Under the catalytic action of activated coke, SO 2 and O 2 and H 2 O reacts with H 2 SO 4 The form is attached to the active coke pores, occupying the active center, resulting in the active coke’s reaction to SO 2 The adsorption capacity gradually weakens; at the same time, NO and O 2 and NH 3 N 2 , NO 2 with NH 3 N 2 , so as to achieve the removal of SO in the flue gas 2 and NOx purposes. Activated coke is a key material that affects the performance and efficiency of desulfurization an...

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Problems solved by technology

[0006] Aiming at the problem that the heating section of the existing active coke regeneration device requires more energy from the outside and the energy utilization rate is low, the purpose of the present invention is to provide a device that can preheat the active coke and then reheat it, and at the same time make full use of the heat in the cooling section. A heat-exchanging active coke purification and regeneration treatment system and an economical and safe treatment method. The heating section is an independent heating system. At the same time, part of the energy of the heating section and the energy of the cooling section are introduced into the preheating section for reuse. Thereby effectively solving the problem of low energy utilization rate in the prior art, realizing the effective utilization of energy, not only saving energy but also reducing costs

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