How we reduced air consumption at the steel rolling mill
In a time where sustainability and green solutions are more important than ever, it is crucial for companies worldwide to transition from black industry to green industry. The path is long and winding, but step by step, Hans Buch contributes to making the Danish industry green. This is also the case at a Danish steel rolling mill.
The Challenge
The bag filter system in the plant’s process had been costly in recent years. The reason was that the system had long been operating with unstable performance, which increased the use of compressed air to clean the process bag filters that capture various dust and metal particles.
Unstable operation means that the system cannot provide the filters in a cleaned state. One of the reasons for the system’s unstable operation is due to the diaphragm valve, which most companies use to clean their process bag filters.
This increases the system resistance, which affects the flue gas extractor. Additionally, the system’s controller attempts to clean the bags more frequently with bursts of compressed air due to a high differential pressure.
The Solution
After testing our new piston valve from MAC, we can now reduce air consumption by up to 70%. This also means that we reduce the system resistance for the process, which means that the flue gas extractor now uses significantly less energy.
Fewer bursts on the bags mean that we extend the lifespan of the same bags by double. The customer saves both a production stop as well as maintenance and purchase of bags.
