Continuous online emission monitoring system

Abstract

The invention discloses a continuous online emission monitoring system which comprises the components of a solid particle continuous monitoring subsystem, a gaseous pollutant continuous monitoring subsystem and an emission parameter continuous monitoring subsystem, wherein the solid particle continuous monitoring subsystem, the gaseous pollutant continuous monitoring subsystem and the emission parameter continuous monitoring subsystem are mounted in a chimney or a flue channel. The solid particle continuous monitoring subsystem, the gaseous pollutant continuous monitoring subsystem and the emission parameter continuous monitoring subsystem are connected with a data processing and remote communication system. The gaseous pollutant continuous monitoring subsystem comprises a sampling probe with a backflow function and a heating function, a trace heating tape, an emission preprocessing system and an infrared gas analyzer, wherein the sampling probe, the trace heating tape, the emission preprocessing system and the infrared gas analyzer are successively connected. Functions such as gas sampling, backflowing, dust filtering and water filtering in the gaseous pollutant continuous monitoring subsystem are controlled through a PLC control system. According to the continuous online emission monitoring system, through monitoring the solid particle, the gaseous pollutant and the emission parameter, by means of remote communication and a data acquisition unit, the continuous online emission monitoring system realizes advantages of remote fault diagnosis, strong software function, high flexibility in use, etc.

Description

technical field [0001] The invention relates to the field, and mainly relates to a continuous online monitoring system for flue gas. Background technique [0002] A device that continuously monitors the concentration and total emission of particulate matter (also called soot) and gaseous pollutants (including sulfur dioxide, nitrogen oxides, etc.) On-line monitoring system", the international general name CEMS (Continuous Emission Monitoring System). The flue gas emission continuous monitoring system can not only be used for emission compliance monitoring and sewage metering, but also can be used for equipment (dust removal, desulfurization, boiler combustion conditions) operating status inspection, fault diagnosis, etc.; thus it is more and more widely used . [0003] With the enhancement of people's awareness of environmental protection, countries have higher and higher requirements for the limit value of flue gas emission, especially for the pollutant emission of waste ...

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Problems solved by technology

[0003] With the enhancement of people's awareness of environmental protection, countries have higher and higher requirements for the limit value of flue gas emission, especially for the pollutant emission of waste incineration plants and power plants. The previous flue gas emission monitoring system can no longer meet the requirements need

For example, the existing flue gas monitoring system has a complex structure, single monitoring data, and cannot conduct comprehensive monitoring of the flue gas; after the gas is sampled from the flue, it is easy to have a temperature difference with the outside air, and moisture will be precipitated, affecting SO 2 and other soluble gases to monitor the concentration, it will also cause serious corrosion to the equipment; in the monitoring process, the filtration is not fine enough, often leaving a lot of dust and water to affect the monitoring effect

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