Mass flow measurement for exact dosing for flue gas desulphurization

ENVEA develops, manufactures, and delivers innovative solutions for air quality monitoring, emissions monitoring, and industrial processes. For almost 50 years, we have supported industrial companies, public institutions, and research organizations in reliably measuring environmental impacts, meeting regulatory requirements, and sustainably improving their performance. Our goal is to prevent the harmful effects of environmental pollution on people’s living conditions. To achieve this, we combine precise measurement technology with in-depth expertise, consulting, software solutions, and comprehensive services. This transforms raw measurement data into reliable insights that enable informed and verifiable decision-making. Our approach is based on three core principles: Inform – provide reliable data, Minimize – reduce unavoidable emissions, and Prevent – avoid process failures as well as health and safety risks. In this way, we help our customers meet or exceed both self-defined and regulatory standards.

Case Study: Mass flow measurement of Waelz oxide Residual materials containing zinc are processed using the Waelz process method which utilizes a rotary kiln. Waelz oxide is the main recovered product from this process. Up to now, theoretical calculations have determined the quantity of Waelz oxide produced at the plant. In future, the exact quantity produced will be recorded in the process control system. Process data: Customer: Manufacturer of Waelz oxide (Germany) Material: Waelz oxide Quantity: Approx. 5 t/h Installation: In the pipe Function: Precise measurement of the flow rate Evaluation unit: DIN Rail Solution: The SolidFlow 2.0 can be calibrated and transmits the precise data to the control system. It can be installed in free-fall or in pneumatic transport systems. Ease of installation and the simple calibration feature makes the SolidFlow 2.0 an extremely effective flowmeter for bulk solids. Due to the robust, durable design, the measuring system is almost maintenance free. The sensor…

Control of the air volume to a raw mill is monitored for more process reliability and energy savings in a cement plant. In a cement plant, the air flow to a raw mill is monitored. The objective of this monitoring is to achieve the highest possible efficiency of the raw mill. Controlling the supply air to such a vertical mill can also lead to considerable energy savings, as the maximum air volume does not always have to be used, but can be adapted to the process. Up to now, air velocities have mostly been measured using differential pressure measurements. However, these clog very quickly due to the high dust load in the duct. The clogging of the differential pressure measurement results in a permanently high load on the fan, which in turn leads to wasted energy. Process data * Customer: Cement plant (Germany) * Material: Raw meal * Dust load: 20 g/m3 * Installation: In the inlet to the vertical mill * Function: Control of the air volume for more process reliability and energy savings Solution The AirFlow P is a sensor specially developed for measuring air volumes in dusty…