With the rapid development of industrialization, the problem of waste gas emissions from fixed pollution sources has become increasingly prominent, causing serious impacts on the environment and human health. The emergence and development of waste gas monitoring technology has provided strong support for the effective control and reduction of waste gas emissions. By continuously monitoring harmful substances in waste gas, such as carbon monoxide and hydrogen chloride, the source of pollution can be discovered in time, the degree of pollution can be assessed, and a scientific basis for environmental protection can be provided.
Waste gas monitoring technology not only contributes to environmental protection, but also provides an important reference for industrial production and policy making. Through monitoring data, enterprises can understand their own waste gas emissions, take emission reduction measures in time, and improve production efficiency and product quality. At the same time, government departments can formulate more scientific and reasonable environmental protection policies based on monitoring data to promote green and sustainable development.
Take a chemical plant as an example. The plant generates a large amount of waste gas during the production process, which contains harmful substances such as carbon monoxide and hydrogen chloride. By introducing waste gas monitoring technology, the plant can monitor waste gas emissions in real time and adjust production processes and emission reduction measures according to monitoring data. This not only reduces the concentration of waste gas emissions, but also improves production efficiency and product quality, achieving a win-win situation of economic and environmental benefits. In order to implement the "Environmental Protection Law of the People's Republic of China
" and standardize ecological environmental monitoring work, the Ministry of Ecology and Environment publicly solicited opinions on the "Technical Specifications for Continuous Monitoring of Carbon Monoxide and Hydrogen Chloride in Waste Gas from Stationary Pollution Sources (Draft for Comments)" on March 20, 2024. All agencies, groups, enterprises, institutions and individuals can put forward opinions and suggestions. At present , waste gas monitoring technology has been widely used around the world, but it still faces many challenges. With the rapid development of industrialization, the types and quantities of waste gas emissions have continued to increase, causing serious impacts on the environment and human health. Therefore, the accuracy and real-time requirements of waste gas monitoring technology are getting higher and higher. However, there are still some problems with existing waste gas monitoring technology. First of all, the accuracy and stability of the monitoring equipment still need to be improved. Some traditional monitoring methods are greatly affected by the environment and are easily affected by temperature.
, humidity and other factors, resulting in inaccurate monitoring results. Secondly, the degree of automation of waste gas monitoring technology needs to be improved. At present, many monitoring processes still require manual intervention, which not only increases labor costs, but also may lead to omissions and errors in monitoring data. In addition, the popularization and application of waste gas monitoring technology are also subject to some restrictions, such as the high cost of monitoring equipment and difficult maintenance.
Continuous monitoring technology of carbon monoxide and hydrogen chloride Carbon monoxide (CO) and hydrogen chloride (HCl) are two common waste gas components of fixed pollution sources, and their emission characteristics and hazards cannot be ignored. Carbon monoxide is a colorless, odorless, non-irritating toxic gas that mainly comes from the incomplete combustion process of fossil fuels. Because its binding ability with hemoglobin is stronger than oxygen, once it enters the human body, it will quickly bind to hemoglobin, causing tissue hypoxia, which may be life-threatening in severe cases. According to statistics from the World Health Organization (WHO), the number of deaths caused by carbon monoxide poisoning worldwide is as high as thousands each year.
Hydrogen chloride is a colorless gas with strong irritation and corrosiveness, which mainly comes from the production processes of chemical, metallurgical and other industries. Hydrogen chloride has a strong irritating effect on the eyes, skin and respiratory tract. Long-term exposure may cause health problems such as chronic respiratory diseases and skin inflammation. In addition, hydrogen chloride is also an acidic gas. When combined with water vapor, it forms hydrochloric acid, which corrodes and damages the environment and equipment.
In order to effectively monitor and control the emission of carbon monoxide and hydrogen chloride, advanced continuous monitoring technologies are required. These technologies are usually based on principles such as optical, electrochemical or chemical sensors , which can monitor the concentration of carbon monoxide and hydrogen chloride in the exhaust gas in real time, and issue an alarm or automatically shut down the pollution source, thereby avoiding environmental pollution and harming human health.
For example, in the steel smelting industry, since a large amount of harmful gases such as carbon monoxide and hydrogen chloride are produced during high-temperature smelting, efficient waste gas treatment systems and continuous monitoring technologies must be used to ensure that emissions meet standards. By monitoring the concentration of carbon monoxide and hydrogen chloride in the exhaust gas in real time, enterprises can adjust production processes and waste gas treatment measures in a timely manner to minimize the emission of harmful gases.
As an important means of monitoring exhaust gas from fixed pollution sources, continuous monitoring technology is based on advanced sensors and data processing technology. By collecting carbon monoxide and hydrogen chloride concentration data in exhaust gas in real time, continuous monitoring technology can accurately reflect the emission of pollution sources and provide strong support for environmental protection. Compared with traditional intermittent monitoring methods, continuous monitoring technology has higher timeliness and accuracy. For
continuous monitoring of carbon monoxide and hydrogen chloride in exhaust gas from fixed pollution sources, the technical engineer of Gongcai.com recommends the British alphasense carbon monoxide sensor CO-AF and the British Alphasense hydrogen chloride sensor HCL-A1 / HCL-B1 :
British Alphasense Carbon Monoxide Sensor - CO-AF
Carbon Monoxide Sensor CO-AF is an electrochemical sensor. Electrochemical sensors have the advantages of high sensitivity, good selectivity, filter membrane, smoke resistance, and good low-concentration output linearity. The range is 0~5000ppm, the working environment is -30~50℃, 15~90%RH, and the resolution is 0.5ppm. It is mainly used in petrochemical, environmental protection, coal mines, automobiles and other fields. It is a good choice for detecting carbon monoxide CO leaks.
British Alphasense Hydrogen Chloride Sensor HCL-A1/HCL-B1 , conventional detection of low-concentration hydrogen chloride gas at air quality level, with a detection range of 0~100ppm. British Alphasense Hydrogen Chloride Sensor HCL-A1/HCL-B1 , with PPB-level resolution, can capture PPB-level hydrogen chloride gas leaking in the air and realize the monitoring of hydrogen chloride gas.
HCL-A1 is small in size, high in resolution, good in linearity, and strong in stability, and can be used in handheld or portable alarm equipment; HCL-B1 is large in size, ultra-high in resolution, fast in response, good in linearity, and high in sensitivity, and can be used in fixed alarm equipment; it can be used in gas detection projects in various steel, chemical, petroleum, water plants, etc.