Coal-fired mercury discharge control method based on semi-dry process

An emission control, semi-dry technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of low total mercury removal rate, difficult to popularize and apply, difficult to remove, etc., and achieve easy adsorption. , improve the utilization rate, the effect of large reactivity
CN1488423AInactive Publication Date: 2004-04-14ZHEJIANG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2004-04-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a kind of coal mercury discharging control method which is based on semi-drying method. Sprays additive into the boiler smoke, oxidizes the elemetary mercury into mercuric oxide easy to remove; then sprays liquid including oxidant into smoke and oxidizes the mercury, and the temperature is decreased and forms the low temperature for high efficiency absorption; sprays absorption agent into cooled smoke, eliminates the mercuric oxide and mercury; the solid particle containing mercury is collected through electricity deduster or baggage dedusting device. The invention reduces the cost of operation.
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Description

technical field

[0001] The invention relates to a coal-fired mercury emission control method based on a semi-dry method. Background technique

[0002] Mercury is a familiar environmental pollutant. After entering the atmosphere and water from pollution sources, mercury in various forms can be converted into inorganic divalent mercury, and then converted into methylmercury under biological action. Methylmercury accumulates in aquatic organisms such as algae and fish, and directly endangers human health through the food chain. The intrusion of methylmercury in the environment into various animals and plants increases the chance, scope and way of methylmercury intrusion into the human body, and leads to more lasting harm to the human body. The main source of mercury environmental pollution is man-made mercury pollution. According to statistics, the total annual emissions to the atmosphere around the world is about 5,000 tons, of which 4,000 tons are ...

Claims

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