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Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method

A technology for burning flue gas and adsorbent

Inactive Publication Date: 2007-08-29
KOREA ELECTRIC POWER CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0025] However, the above-mentioned adsorbents and mercury removal methods for removing mercury compounds from flue gas disclosed in the above-mentioned U.S. patents have a problem in that they are either not advantageous in terms of cost, or No advantage in mercury removal efficiency
Also, their problem is that the sorbent has to be applied in the form of a powder to the combustion flue gas discharged from a large boiler, or requires additional processes for processing the sorbent

Method used

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  • Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method
  • Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method
  • Absorbent for removing a little amount of harm contaminant from combustion smoke and preparing method

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Embodiment Construction

[0039] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order to allow those skilled in the art to practice the present invention more easily.

[0040] According to an embodiment of the present invention, a process of an adsorbent for removing mercury from combustion flue gas and a preparation method thereof are as follows.

[0041] In the present invention, in order to remove mercury from combustion flue gas discharged from a large boiler, powdered adsorbent is sprayed at the rear of the boiler to adsorb mercury and removed in particulate control equipment such as electrostatic precipitators and fabric filters . For this reason, an inexpensive adsorbent having high adsorption performance for mercury is prepared using heavy oil fly ash treated as waste, and the prepared adsorbent is used to adsorb mercury contained in combustion flue gas.

[0042] That is, in the present invention, the activ...

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Abstract

This invention discloses a combustion flue gas mercury removal sorbent and preparation method. The adsorbent includes weight percentage 1-30% of activity heavy oil fly ash, the chemical substance select one of freedom sulfur, iodine, bromine and chlorine in an arbitrary. Using heavy oil burning boiler heavy oil from industrial waste fly ash to prepare adsorbent in the way of economy, and the adsorbent has excellent performance to mercury, and get a small adsorbent by jet can be removed low concentration mercury of combustion flue gas in the large boiler. Accordingly, the present invention can prevent the repeating utilization factor reduction of fly ash in coal-fired power plant and to achieve the minimum of operating costs.

Description

technical field [0001] The invention relates to the field of adsorbents, and in particular to an adsorbent for removing mercury and a preparation method thereof. Since the adsorbent of the present invention is prepared from heavy oil fly ash, which is an industrial waste produced by boilers burning heavy oil, the cost of the adsorbent of the present invention is relatively low. Also, the adsorbent of the present invention has good adsorption performance for mercury contained in combustion flue gas, so that the adsorbent can remove low-concentration mercury contained in combustion flue gas discharged from a large boiler. Therefore, according to the present invention, heavy oil fly ash, which is generally considered to be an industrial waste requiring high-cost treatment, can be reused and converted into a high value-added adsorbent; according to the present invention, the amount of adsorbent can also be reduced , and can reduce the reduction of coal fly ash reuse rate in coal-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30B01D53/04B01D53/64
Inventor 白点寅严熙文柳青杰张庆龙李时薰
Owner KOREA ELECTRIC POWER CORP
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