Electrochemical regeneration method of flue gas demercury adsorbing material

An adsorption material and electrochemical technology, applied in chemical instruments and methods, separation methods, filter regeneration, etc., can solve the problems of difficult regeneration of modified materials, improve adsorption specificity and adsorption capacity, convenient operation, and small damage. Effect
CN1559668AInactive Publication Date: 2005-01-05SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2005-01-05
Estimated Expiration
Not applicable · inactive patent
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Abstract

An electrochemical process for regenerating the used adsorbent generated by demercurating fume includes such steps as treating it by oxidizing-reducing agent and complexing agent to form complexed Hg ions, applying an electric field to reduce the oxidized Hg to Hg, and modifying its surface by penetrating S, P and N.
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Description

technical field

[0001] The invention relates to an electrochemical regeneration method of a flue gas mercury removal adsorption material, which is used for flue gas treatment and resource recovery, and belongs to the technical field of environmental protection and energy saving. Background technique

[0002] Mercury emissions from coal-fired power plants are generally considered to be the largest source of mercury pollution. Research on mercury emission control technology in coal-fired flue gas mainly focuses on two aspects:

[0003] (1) Elemental mercury (Hg 0 ) is oxidized to divalent mercury (Hg 2+ ), combined with existing wet desulfurization and dust removal equipment. SO in flue gas 2 , NOx and other substances such as mercury, arsenic and selenium, Hg 0 oxidized to Hg 2+ The difficulty is great and the cost is high. Therefore, it is more difficult to popularize this technology in our country.

[0004] (2) Adsorption and removal of mercury.

[0005] Commonly u...

Claims

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