How Thermal Power Plants Use Guided Wave Radar Level Transmitters To Meet Environmental Challenges

During the power generation process of thermal power plants, the exhaust gas produced by coal combustion is rich in sulfur and nitrogen oxides. If such waste gas is directly discharged into the atmosphere, it will cause air pollution and may even cause acid rain. In the past, the environmental protection tasks of thermal power plants mainly focused on desulfurization. However, with the increasing emphasis on environmental protection in recent years, denitrification (ie, the removal of nitrogen oxides) has become an environmentally friendly task as important as desulfurization.

Due to the advantages of stable chemical properties of urea and convenient transportation and feeding, the urea hydrolysis process has become the mainstream method for denitrification operations in power plants. As the core equipment of this process, the urea hydrolyzer can hydrolyze urea into ammonia at high temperature, and then use the ammonia as a denitrification reducing agent and transport it to the denitrification reactor to participate in the reaction. Therefore, the accuracy of urea hydrolyzer level measurement is crucial to the normal operation of the entire denitrification process.

In this case, FlexScan guided wave radar level transmitters are widely used due to their insensitivity to condensation and adhesion. Even if heavy condensation or even crusting forms on the antenna, it will still operate normally. In addition, the antenna of the SLDL5500 series Hydrolyzer guided wave radar level gauge is made of 316L stainless steel and uses good corrosion-resistant sealing materials. The Guided Wave Radar for Liquids equipment is designed to work well even when exposed to high temperature and high pressure, strong corrosion and strong penetration of urea solution and ammonia.

At present, power plants have increasingly strict environmental protection requirements, and denitrification equipment and generator sets have adopted interlocking control devices. Therefore, whether the guided wave radar level transmitters in the urea hydrolysis reactor, the key equipment of the denitrification process, can operate stably for a long time is crucial to the safe operation of the entire power plant.