Our Client: Holcim Lebanon, part of the Holcim Group, is one of the leading cement companies in Lebanon.
Our Bag Filters ensured emissions were lower than 10 mg/Nm3 and have reduced dust levels at stack by 88%. We also enhanced the automation system to optimize response times.
Our Contract: Holcim Lebanon has been an air filtration client for two decades, as it has continuously modernized its cement plant – the largest cement kiln in Lebanon. In 2009, we were hired to upgrade our existing components, as the plant was looking to increase its production flow by 30% to 1.1 million Am3/hr.
Our Challenge: Find innovative, cost-effective ways to maintain emissions at or below target levels, while increasing air filtration capacity to keep up with a higher production flow.
Our Solution: We replaced the main filter at the kiln with a new Bag Filter in 2009. The enhanced features of this new baghouse ensure emissions remain lower than 10 mg/Nm3 – compliant with the internal target of 20 mg/Nm3. Our engineers designed a system with fewer but longer bags than the previous bag filter, increasing the surface area for dust retention. We also improved the bags’ alignment to better retain dust particles, increasing efficiency. Our enhanced automation system has optimized response times. We have also upgraded the Bag Filters on the clinker cooler and mill and separator. The new Bag Filter solutions reduced the levels of dust at stack by 88% between 2009 and 2011 (Holcim Lebanon Sustainable Development report, 2012, p. 14).