Ultralow emission smoke particulate matter concentration online monitoring device and method

Abstract

The invention belongs to the technical field of environment monitoring and in particular relates to an ultralow emission smoke particulate matter concentration online monitoring device and method. Thedevice mainly comprises a large flow in-situ heating, tracing and sampling system, a heat tracing transmission pipeline, a smoke and dust concentration rapid measuring device, a gravimetric method smoke trapping and weighing device, a condensation system, a smoke effective flow rate measuring system, a drainage and gas supply system, an instrument and control system and a tertiary vibration attenuation device; methods such as large flow in-situ heating isokinetic sampling, high temperature heat tracing transmission, gravimetric method dust weight measuring and a hot air drying filter membraneare adopted, measurement accuracy is high, structure is simple, and particular matter concentration in flue gas can be monitored online and accurately; and the device provided by the invention can effectively eliminate influence of moisture in the flue gas on particular matter concentration detection and can continuously, online and accurately detect the particular matter concentration in the flue gas. Therefore, the device provided by the invention is applicable to occasions with industrial smoke emission, such as a thermal power plant.

Description

technical field [0001] The invention belongs to the technical field of environmental monitoring, and in particular relates to an on-line monitoring device and method for ultra-low emission smoke particle concentration. Background technique [0002] The methods of dust monitoring are generally divided into gravimetric method and non-gravimetric (equivalent) method. Non-gravimetric (equivalent) method. There are many methods such as ray method, optical method and electrostatic method. [0003] Most of the non-gravimetric (equivalent) methods have the characteristics of simple structure and meet the requirements of continuous monitoring, but all non-gravimetric (equivalent) methods have the characteristics of poor traceability, and it is difficult to meet the requirements of supervision / regulatory monitoring. [0004] The filter membrane weighing method is a national standard analysis method, which is suitable for meeting supervision / regulatory monitoring. However, at presen...

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Problems solved by technology

[0021] In order to solve the technical problems of low smoke and dust content, high humidity of flue gas and inaccurate monitoring results of smoke and dust caused by the settlement of smoke particles on the wall of the sampling pipe under the condition of ultra-low emission, the present invention provides an online monitoring system for the concentration of ultra-low emission smoke particles. monitoring device

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