1. The state of the technology for high-temperature direct-input oxygen and carbon monoxide on-line analyzers, as national emission standards for atmospheric pollutants from boilers improve, the NOx emission requirements are becoming more stringent. In order to further reduce NOx emissions, low-nitrogen burner modifications are common in large boilers. The application of low-nitrogen combustion technology has resulted in the reduction of local areas in the furnaces due to an unreasonable air classification in the furnace, and CO, H2 and H2S concentrations are high and O2 volumes are low. The resulting reaction of a large number of free S atoms with water cold walls produces high temperature corrosion, which leads to a decrease in wall thickness and intensity, leading to problems in the non-stop or large-scale re-barreling of aircraft; (b) A significant increase in the concentration of CO and H2 in boilers, which has an impact on boiler efficiency; Existing detection devices in high-temperature pneumatic areas, especially prone to high temperatures

　　　　There are deficiencies in the current pyrotechnic temperature measurements of boilers, which are mainly based on thermoelectric dolls, smoke-temperature probes and traditional infrared thermometers: The temperature of the pyrotechnics is influenced by the extent and accuracy of the thermoelectric doll measurements, the temperature of the pyrotechnics is generally not fitted with temperature measuring devices prior to the high-temperature reheater, the operators are not intuitively judging and monitoring the combustion and flue flow fields within the furnaces, and, in the absence of temperature measurements, some of the burning optimization systems used in the boilers are not fully functioning, with some effects on the further improvement of the efficiency of the boilers and the reliability of the equipment. The inertity of the thermoelectric doll keeps the indicator values of the instrument behind the measured temperature change, which is less sensitive than the actual flue gas temperature change because of the lag in the temperature fluctuations detected by the thermoelectric dolls, which are less amplified than the smoke temperature fluctuations; As a result of the thermoelectric doll.

CEMS is an important online instrument for the proper operation of power plants and the monitoring of the transmission of environmentally friendly data, which is used primarily in denitrogenization and desulphurization systems. The main equipment of CEMS for desulphurization, denitration systems is a smoke-discharge analyzer, sampling unit, pre-treatment system, dust unit, ammonia escape measurement unit, PLC control system, data collector, communication transmission equipment, etc. The main monitoring parameters are SO2, NOX, O2 smoke flow speed, smoke discharge temperature, smoke discharge pressure, dust concentration, NOX, O2, ammonia escape, etc. 1CEMS status. 1.1 CEMS applications in production control. There are two CEMSs in the devulcanization system, which monitor primary and clean smoke, respectively. The parameters measured by the original smoke CEMS are provided to the automated control system as a front feed signal, and the parameters measured by the clean smoke CEMS are provided to the automated control system as a feedback variable, through the front and back data

　　On-line continuous monitoring of emission concentrations and total emissions from fixed sources of contaminants has been achieved by the continuous on-line monitoring system of flue gas on the use of extraction sampling, backscatter concentration measurements, leather hosting flow measurements and computer network communication techniques. At the same time, technical improvements have been made in response to the country ' s relatively small coal species, high variations in coal, high discharge concentrations of pollutants and high flue gas humidity. It is also designed to conform to national standards and to provide a professional Chinese operating platform and a Chinese reporting function, multi-group simulations and switch input output interface, which will allow for the connectivity of the on-site bus and the choice of a variety of communication methods to make the system operational and flexible. The CEMS currently installed contains various principles and measurements, for example, the gaseous contaminant CEMS sampling method involves a complete extraction system, a thin one.

Summary: Optimization of the original system based on ARM control in response to the low accuracy and real-time data collection problems of the on-line monitoring system for flue gas desulphurization in power plants. Designing an online monitoring system as a whole based on the requirements of the plant's flue gas desulphurization system and based on the programme's presentation of two aspects of hardware, software, key hardware selection, key circuit design, C software design and platform design. Optimized on-line pneumatic desulphurization monitoring systems are applied to a power plant and sensor data, switches are statistically and analytically analysed. The results of the practical application showed that the optimization programme performed well in terms of data accuracy, real-time accuracy and was able to ensure the safe, stable and continuous operation of the FGD online monitoring system. The introduction of smoke from coal-fired installations at power plants has become the main source of atmospheric sulfur dioxide emissions.

The flue gas monitoring system is primarily concerned with monitoring gas emissions in the relevant high-pollution industries. To a large extent, it protects the environment and contributes to the sustainable development of society, especially in the high-pollution public sector, such as fire power.