Simple heat exchange type active carbon coke purifying and regenerating process system and active carbon coke purifying and regenerating process method

Abstract

The invention discloses a simple heat exchange type active carbon coke purifying and regenerating process system and an active carbon coke purifying and regenerating process method. The system comprises a regenerating device, a preheating device, a heating device and a cooling device, wherein the regenerating device comprises a regenerating tower; the preheating device comprises a drying tower; the heating device comprises a heater and a first fan, and is used for heating the active coke in a heating section of the regenerating tower; the cooling device comprises a second fan, a normal-temperature air input pipeline and a hot air output pipeline, and the second fan is used for sending the hot air after heat exchange into the drying tower so as to preheat the active coke in the drying tower. The process method comprises the following steps: (a) preheating: preheating the active coke entering the drying tower; (b) heating: heating the active coke at the heating section; (c) regenerating: regenerating the active coke at the regenerating section; and (d) cooling: cooling the regenerated active coke entering the cooling section, and preheating the active coke in the drying tower by the air after heat exchange. The system and method disclosed by the invention are suitable for restoring and regenerating the active carbon.

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 simple heat exchange type active coke purification regeneration treatment system and an economical and safe treatment method. The heating section is an independent heating system, and the energy in the cooling section is introduced into the preheating section for energy recycling, thereby effectively solving the existing The problem of low energy utilization rate in the technology realizes the effective utilization of energy, which not only saves energy but also reduces costs

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