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Selective catalytic reduction denitrification plant for removing visible plume

A selectivity and equipment technology, applied in chemical instruments and methods, gas treatment, membrane technology, etc., can solve problems such as difficult to remove visible emissions

Inactive Publication Date: 2016-11-30
GSCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since it takes 30 minutes to 1 hour to supply the reducing agent to the catalyst layer by using exhaust gas or auxiliary steam after starting the gas turbine, it is difficult to remove the dense Visible emissions generated from the ground

Method used

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  • Selective catalytic reduction denitrification plant for removing visible plume
  • Selective catalytic reduction denitrification plant for removing visible plume
  • Selective catalytic reduction denitrification plant for removing visible plume

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Embodiment Construction

[0049] best practice

[0050] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

[0051] In conventional combined power, such as figure 2 Drive SCR devices shown. Here, the reductant vaporizer heats and vaporizes the reductant using high-temperature exhaust gas or auxiliary steam.

[0052] According to the present invention, the auxiliary heater is installed at the front end of the reductant vaporizer, such as image 3 shown, thus making the reducing agent NH 3 Immediately reaches the denitrification catalyst at the same time as starting the gas turbine, so visible emissions and NO can be effectively removed even at low temperatures when starting the gas turbine x .

[0053] It is desired to make the reductant NH by running the auxiliary heater 3 vaporization followed by injection of denitrification catalyst and NH while starting the gas turbine 3 .

[0054] Meanwhile, the amount of catalyst con...

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Abstract

The present invention relates to a selective catalytic reduction denitrification plant for efficiently removing visible plume (yellow fume) by using selective catalytic reduction in order to remove the visible plume (yellow fume) during gas turbine startup in combined heat power or the like. To this end, the reductant supply condition of the existing nitrogen oxide reduction apparatus through selective catalytic reduction is improved and the ratio of NO2 / NOX is precisely adjusted, thereby creating an excellent effect of removing visible plume from exhaust gas with low temperature of 130 DEG C or lower.

Description

technical field [0001] The present invention relates to a denitrification device for efficiently removing visible emissions (yellow plume or smoke) generated when starting a gas turbine from low-temperature exhaust gas below or equal to 130° C. by selective catalytic reduction (SCR). Background technique [0002] Nitrogen oxides (NOx) emitted from power plant boilers, gas turbines, industrial boilers, incinerators, diesel engines, etc. x ) is the main cause of pollution. low-level NO x Burners, selective non-catalytic reduction or selective catalytic reduction are used as methods for preventing or reducing nitrogen oxides. [0003] Among them, the selective catalytic reduction is to convert the nitrogen oxides contained in the exhaust gas into harmless substances through the following chemical equation by injecting ammonia or urea at the front end of the denitrification catalyst so that the nitrogen oxides and ammonia pass through the catalyst: nitrogen and water Methods....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/54B01D53/90B01D53/32
CPCB01D53/864B01D53/9431B01D53/9477B01D2251/104B01D2251/2062B01D2251/2067B01D2257/404B01D2257/502B01D2257/708B01D2258/012B01D2258/0283B01D2258/0291B01D2259/818B01D53/8631B01D53/944
Inventor 郑承奎金大羽李泰熙
Owner GSCO