Emissions are monitored in power plants, waste incinerators and motor testing facilities, on offshore ships and, of course, in industrial production plants, as well as in gas analysis in chemistry. In addition to the goal of protecting the environment and ensuring safety, there is also a focus on optimizing combustion processes. This means greater efficiency and lower energy consumption, as well as protecting the components used in production and giving them a longer service life. In short, it is a win-win situation in which the environment benefits just as much as the companies that save money through sophisticated flue gas monitoring with continuous emission measurement.
Volatile organic compounds (VOCs) are key factors in the formation of the photochemical smog which leads to the Chinese pollution phenomenon “haze”
The phenomenon of smog has existed for quite some time in China’s major cities and the government has been fighting it with numerous plans of action. In the last two years, factories have been closed and driving bans imposed; in 2017, a transition from coal-fired heating to gas and electricity was ordered. There are further government regulations regarding VOCs in China.
VOCs are key factors in the formation of photochemical smog, which is responsible for the infamous “haze” – known in China as “wu mai.” This is a serious pollution phenomenon. Public policy is now trying to improve the environment by controlling VOC emissions, and the first step is to monitor these emissions.
VOC emission monitoring devices can use one of several different methods. In this blog post we focus on online high–temperature VOC monitoring, where the flue gas is not cooled down but is fed to the analyzer while still hot. This prevents the condensation of individual components within the flue gas.
Fortunately, there has been a worldwide rethink of these processes, and the resulting measures are helping to reduce emissions without sacrificing production efficiency. KNF is pleased that our pumps are helping to achieve the goal of a sustainable improvement in air quality. For example, they are used in various systems in conjunction with sensors and analyzers that measure industrial gas emissions.
The Chinese manufacturer Focused Photonics Inc. (FPI) in Hangzhou has built a nonmethane hydrocarbon (NMHC) analyzer, which uses our pumps to transfer flue gas from a chimney to the analyzer. The company offers two product lines, suitable for temperatures up to 60°C and up to 240°C respectively.
To prevent the gas from cooling, the pump head is placed in a box which is heated up to 140–180°C. The company uses our heat–resistant pumps for this purpose. Depending on the customer’s needs, we can deliver various project options with different mechanical designs, such as an elevated head which can also be rotated by 180° and, insulating material to reduce heat loss, holes in the pump head for heaters and sensors, rubber feet to reduce vibration, or special mounting plates.