Why is temperature control so important for CO₂ binding in cement?

Cement that absorbs carbon dioxide instead of emitting it - this is no longer a vision of the future, but a viable solution used today in green construction. However, whether this technology actually works largely depends on the temperature being properly set and maintained. Too low a temperature slows down the reaction and reduces the amount of CO₂ bound. Too high, on the other hand, can lead to deterioration of the cement's properties, reducing its service value. Without precise temperature control, the entire process can lose efficiency, and the company will increase emissions instead of reducing them. For companies focused on sustainable development and meeting increasingly demanding environmental standards, precise temperature control is therefore becoming a necessity.

How to monitor the CO₂ dosing temperature in the cement production process? Client Challenge

Our client specializes in construction, civil engineering, recycling and environmental remediation projects. It has been investing in environmentally friendly technologies for many years, looking for practical solutions that will realistically reduce CO₂ emissions in production processes. Recently, the company began working with a supplier of innovative concrete that allows carbon dioxide to bind in cement, significantly reducing the environmental impact.

Precise temperature control during CO₂ batching is essential for the entire process to run properly. The customer therefore needed a solution that would allow precise temperature limits to be set and allow all process data to be recorded. Intuitive operation was also important - operators could not spend a lot of time constantly correcting settings. In addition, the solution had to work smoothly with an existing installation based on a standard 4-20 mA analog signal.

How to effectively control the CO₂ setting process in cement through temperature control? Our solution

In this implementation, we used a modular JUMO meroTRON controller with PLC functionality and a JUMO LOGOSCREEN 601 screen recorder. The meroTRON controller, equipped with analog (4-20 mA) and digital inputs and outputs, is responsible for precise CO₂ temperature control by adjusting an electric ball valve. The operation is based on the current measurement of the temperature of carbon dioxide, comparing it with the setpoint, and then automatically opening or closing the valve through the corresponding analog signal. As a result, the CO₂ flow rate is precisely matched to the process requirements.

All process data - setpoints, actual values, temperature waveforms - are continuously monitored and archived by the JUMO LOGOSCREEN 601 logger. The device has the ability to simultaneously record up to 6 analog channels and present the data on clear, customized process screens. In addition, the logger allows the creation of batch reports, which significantly facilitates process analysis and documentation in accordance with quality and environmental requirements.

How does the automation of CO₂ temperature control facilitate the achievement of environmental goals? Customer Benefits

The biggest benefit for the customer was the user-friendly operation of the entire temperature control process during CO₂ setting in cement. Thanks to a simple and intuitive control system, operators could easily maintain optimal process parameters without the need for constant supervision or specialized training. As a result, the company gained process stability, reducing production errors. Precise temperature control also translated into a marked reduction in carbon dioxide emissions, allowing the client to effectively meet its ambitious environmental goals. With this solution, the client has strengthened its position as a leader in innovative, green construction.

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About the author

My name is Ewelina Szmit and I have been involved in content marketing for several years, combining my professional skills with my passion for writing. I am convinced that even the most technical topics can be presented in an interesting and accessible way for everyone. Outside of work, I express my creativity by creating collages from newspaper clippings. I like to spend my free time actively, walking my dog or running.

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