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Flue gas automatic monitoring system and method

An automatic monitoring system and flue gas technology, applied in electrical program control, program control in sequence/logic controllers, etc., can solve problems such as measurement errors of flue gas components, and achieve the effects of low cost, simple structure and convenient installation.

Pending Publication Date: 2018-01-19
ANHUI BISHUI ELECTRONICS TECH
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Problems solved by technology

In this patent, when the back-purging system of the flue gas sampler is back-purged, only the cut-off solenoid valve connected to the rear end of the flue gas sampler is closed to prevent compressed air from blowing into the sampling pipeline, but the compressed air in the flue gas sampler Without any treatment, when the backflush is over, the cut-off solenoid valve is opened, and the mixture of flue gas and compressed air in the flue gas sampler enters the sampling pipeline for analysis and detection, which will cause large errors in the measurement of flue gas components

Method used

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  • Flue gas automatic monitoring system and method
  • Flue gas automatic monitoring system and method

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Embodiment Construction

[0037] Preferred embodiments of the present invention are described below with reference to the accompanying drawings.

[0038] Such as figure 1 As shown, the present invention provides an automatic flue gas monitoring system for monitoring and analyzing the composition of flue gas, including a flue gas inlet pipe 1, a filter 2, a blowback device 3 and a controller 4; the flue gas inlet pipe 1 and the filter The input end of the device 2 is connected; the blowback device 3 is connected to the output end of the filter 2; the controller 4 controls the blowback device 3 to blow the compressed air back to the filter 2. The controller 4 is a PLC controller.

[0039] Specifically, the automatic flue gas monitoring system also includes a pressure sensor 5 , which is arranged in the filter 2 , and the pressure sensor 5 monitors the air pressure information in the filter 2 ; the pressure sensor 5 sends the air pressure information to the controller 4 .

[0040] Specifically, the auto...

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Abstract

The invention provides a flue gas automatic monitoring system and method, which are used for monitoring and analyzing components of flue gas. The system comprises a flue gas inlet pipeline, a filter,a back blowing device and a controller. The flue gas inlet pipeline is connected with the input end of the filter. The back blowing device is connected with the output end of the filter. The controller controls the back blowing device to conduct back blowing of compressed air on the filter. An analysis process for components of various kinds of gas can be started on the basis of an analysis resultof the content of oxygen in a flue, thereby preventing compressed air mixing in flue gas from interfering with an analysis result of the components of various kinds of gas during back flowing.

Description

technical field [0001] The invention belongs to the technical field of flue gas detection, and in particular relates to an automatic flue gas monitoring system and a method thereof. Background technique [0002] Smoke automatic monitoring system (CEMS) is a device that continuously monitors the concentration and total emission of gaseous pollutants and particulate matter emitted by air pollution sources and transmits the information to the competent department in real time. It is also called "continuous smoke emission monitoring system" or "Smoke Gas Online Monitoring System". The exhaust gas pollution monitored by the flue gas automatic monitoring system includes SO 2 , NQx, HCL, CO, CO 2 , and particulate matter. [0003] One of the most important components in the flue gas automatic monitoring system is the analytical instrument for flue gas composition measurement. Since the analytical instruments for flue gas composition measurement have certain requirements on the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05
Inventor 秦汉林翟湘毅吴为江徐猛
Owner ANHUI BISHUI ELECTRONICS TECH
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