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SCR catalyst ash deposition condition detection device and ash deposition detection method

A technology of SCR catalyst and catalyst module, which is applied in chemical instruments and methods, cleaning methods and utensils, cleaning hollow objects, etc., and can solve the problems of easy fouling and blockage of catalysts

Active Publication Date: 2015-11-11
NANTONG YATAI ENG TECH
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  • Abstract
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Problems solved by technology

[0005] The catalyst surface of the existing denitration device is prone to ash accumulation and clogging

Method used

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  • SCR catalyst ash deposition condition detection device and ash deposition detection method
  • SCR catalyst ash deposition condition detection device and ash deposition detection method

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, a device for detecting the dust deposition condition of the SCR catalyst includes a main pipeline 4 and multiple detection pipelines 6, the main pipeline 4 is connected to the bottom of the SCR catalyst, and multiple detection pipelines 6 are arranged above the catalyst module of the SCR reactor Each detection pipeline 6 is installed with a solenoid valve 5 and a differential pressure transmitter 7 before entering the SCR reactor, and the main pipeline 4 and each detection pipeline 6 are connected to a controller.

[0020] When the main pipeline 4 is close to the SCR reactor, it is divided into n detection pipelines 6 according to specific needs. Install a solenoid valve 5, a differential pressure transmitter 7, and a detection pipeline ball valve 8 before each detection pipeline enters the reactor. After the detection pipeline 6 e...

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Abstract

The invention relates to detection of ash deposition condition in front of a catalyst in an SCR reactor and an ash deposition detection method. The invention provides an SCR catalyst ash deposition condition detection device, which consists of a main pipeline (4) and a plurality of detection pipelines (6), the main pipeline (4) is connected to a place below the SCR catalyst, the plurality of detection pipelines (6) are arranged over an SCR reactor catalyst module, each of the detection pipelines (6) is equipped with an electromagnetic valve (5) and differential pressure transmitter (7) before entering the SCR reactor, and the main pipeline (4) and each of the detection pipelines (6) are connected to a controller. The invention also provides an ash detection method. The device and the method provided by the invention avoid mass deposition of large particle ash, detect the deposition condition of large particle ash in time, and determine a specific position according to the change of pressure in the air pipe, so that an ash blowing system can clear soot timely and accurately.

Description

technical field [0001] The invention is applied to detecting the ash accumulation condition in front of the catalyst in the SCR reactor and a method for detecting the ash accumulation. Background technique [0002] In order to meet the requirements of the newly promulgated "Emission Standards of Air Pollutants for Coal-fired Power Plants" (GB13223-2011), power plant boilers need to be equipped with denitrification devices, and the most stringent NOx emission standards in the world implemented by my country also determine that most coal-fired Power plant boilers need to use SCR denitrification devices. Since the SCR denitration devices of power plant boilers in my country are all arranged with high dust, the blockage of large particles of dust will be an important factor that threatens the safe and stable operation of the unit. [0003] Large particle ash, especially "popcorn ash", is a kind of low-density ash, loose and porous, mostly less than water in density, irregular in...

Claims

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Application Information

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IPC IPC(8): G01N7/00B08B9/032
Inventor 王德荣顾文才郭小炜
Owner NANTONG YATAI ENG TECH
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