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SNCR (Selective Non-catalytic Reduction) denitration device and denitration method

A denitrification and control device technology, applied in the denitrification device and denitrification field, can solve the problems of difficulty in forming a stable reaction temperature zone, low denitrification efficiency, incomplete reaction, etc., and achieve simple equipment, good heat recovery benefits, and high efficiency Effect

Inactive Publication Date: 2013-10-16
张蕊
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  • Claims
  • Application Information

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Problems solved by technology

That is to say, it is difficult to form a stable reaction temperature zone in the furnace by using the SNCR method, and the incomplete reaction results in low denitrification efficiency.

Method used

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  • SNCR (Selective Non-catalytic Reduction) denitration device and denitration method

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Embodiment

[0037] The SNCR denitration device of the present invention comprises a denitration reactor (1), a fuel injection control device (2), a temperature control device (3), a reducing agent injection device (4), a denitration reactor outlet flue (5), a denitration reactor A reactor inlet flue (6), a fuel system controller (9), the fuel injection control device (2) is connected to the temperature control device (3) through the fuel system controller (9).

[0038] In the denitration method of the present invention, the above-mentioned denitration device is used, and the temperature in the denitration reactor (1) is 800-1100°C, preferably 850-1050°C, more preferably 950-1050°C; the reducing agent injection device ( The reducing agent in 4) is urea; the net flue gas coming out of the outlet flue (5) of the denitrification reactor heats the raw flue gas coming in from the inlet flue (6) of the denitrification reactor; the denitrification reactor The temperature of the net flue gas comin...

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Abstract

The invention relates to an SNCR (Selective Non-catalytic Reduction) denitration device and a denitration method adopting the device. The device includes a denitration reactor (1), a fuel jetting control device (2), a temperature control device (3), a reducing agent jetting device (4), a denitration reactor outlet flue (5), a denitration reactor inlet flue (6) and a fuel system controller (8), wherein the fuel jetting control device (2), the temperature control device (3), the reducing agent jetting device (4), the denitration reactor outlet flue (5) and the denitration reactor inlet flue (6) are all mounted on the denitration reactor (1); the fuel jetting control device (2) is connected with the temperature control device (3) through a fuel system controller (9). The denitration method provided by the invention is realized through adopting the denitration device provided by the invention. The device provided by the invention has the advantages of high efficiency, low investment and excellent heat recovery benefit.

Description

technical field [0001] The invention relates to a denitration device and a denitration method, in particular to an SNCR (selective non-catalytic reduction) denitration device and a denitration method. Background technique [0002] There are two kinds of denitrification technologies that are relatively mature in China: Selective Catalytic Reduction (SCR) and Selective Non-Catalytic Reduction (SNCR). [0003] SCR denitrification technology means that under the action of a catalyst and at a certain temperature (320-420°C), the nitrogen oxides in the flue gas selectively react with the reducing agent to generate nitrogen and water to achieve the purpose of removing nitrogen oxides. In SCR denitrification technology, most of the V 2 o 5 The optimal catalytic temperature of the titanium oxide-based catalyst as a carrier is 302-402°C, and the activity is strongest at about 350°C. The temperature of the flue gas released from the glass kiln is about 450°C, so heat exchange should...

Claims

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Application Information

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IPC IPC(8): B01D53/79B01D53/56
Inventor 张蕊
Owner 张蕊
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