Displaying items by tag: Alternative Fuels
Decarbonising the cement sector in the US, March 2024
27 March 2024The US Department of Energy (DOE) announced a US$1.6bn investment in the cement sector this week. The funding was part of a total of US$6bn for 33 projects in over 20 states to decarbonise energy-intensive industries also including chemicals and refining, iron and steel, aluminium and metals, food and beverages, glass, process heat applications and pulp and paper. The DOE was keen to link the money to “the President’s Bipartisan Infrastructure Law and Inflation Reduction Act.” Politics is never far away it seems! The projects are part of the Industrial Demonstrations Program, managed by DOE’s Office of Clean Energy Demonstrations (OCED).
Company | State | Funding | Scale | Method |
Heidelberg Materials US | Indiana | US$500m | Full | CCS |
National Cement | California | US$500m | Full | Alternative fuels, calcined clay, CCS |
Summit Materials | Georgia, Maryland, Texas | US$216m | Demonstration | Calcined clay |
Brimstone Energy | TBD | US$189m | Commercial | Raw material substitution |
Sublime Systems | Massachusetts | US$87m | Commercial | Raw material substitution |
Roanoke Cement | Virginia | US$62m | Demonstration | Calcined clay |
Table 1: Summary of US Department of Energy funding announced on March 2024 to decarbonise cement and concrete production
Table 1 above shows the main approaches each of the projects aim to use. The two most expensive ones involve carbon capture and sequestration (CCS) at Heidelberg Materials US’ Mitchell cement plant in Indiana and National Cement’s Lebec plant in California respectively. In a complimentary press release Chris Ward, the CEO of Heidelberg Materials North America, said “This substantial federal funding investment will help create the first full-scale deployment of carbon capture and storage on a cement plant in the US.” The proposed CCS unit at the plant will capture around 2Mt/yr of CO2 from 2030. If Ward’s forecast is accurate (and no one beats them to it), then Heidelberg Materials will likely have set up the first full-scale CCS units at cement plants in both North America and Europe. This will be a significant achievement. The National Cement project, by contrast, is a mixed bag of approaches to decarbonising cement production that follows the multi-lever approach advocated for in many of the industry net-zero roadmaps. It intends to use agricultural by-products such as pistachio shells, as alternatives fuels to lower the fuel-based emissions, calcined clay to lower the clinker factor and CCS to capture the remaining 950,000t/yr of CO2 emissions.
The other projects either involve using calcined clay or substituting limestone with calcium silicate. The Summit Materials proposal is noteworthy because it aims to build four clay calcination units in locations in Maryland, Georgia and Texas. None of these appear to be near Summit’s (or Cementos Argos’) cement plants. This suggests that the company may be intending to use calcined clay in ready-mixed concrete production. The Roanoke Cement Company calcined clay project will be baseEuropead at its cement plant in Troutville, Virginia.
The remaining two grant recipients, Brimstone and Sublime Systems, will both test the companies’ different methods of manufacturing cement by using calcium silicate instead of limestone. Brimstone’s method produces ordinary Portland cement (OPC) and supplementary cementitious materials (SCM). The company said in July 2023 that its OPC met the ASTM C150 standards. However, the company has released less information about its actual process. Sublime Systems’ uses an electrolysis approach to create its ASTM C1157-compliant cement. It calls this ‘ambient temperature electrochemical calcination.’
Investment on the same scale of the DOE has also been happening in Europe. In July 2023, for example, the European Commission announced an investment of Euro3.6bn in clean tech projects to be funded from the proceeds of the European Union emissions trading scheme (ETS). This was the third call for large-scale projects following previous announcements of recipients in 2021 and 2022. Euro1.6bn of the third call funding went towards cement and refining projects including five cement and lime projects in Belgium, Croatia, Germany and Greece. The money granted for each of these schemes was in the region of Euro115 - 235m.
Both the US and Europe are throwing serious finance at the cement industry to try and kickstart the various pathways towards net zero. They are also doing it in different ways, with the US aiming to boost its economy by onshoring sustainable industry, and Europe hoping to fund its approach via carbon taxation. Government-driven decarbonisation investment for cement in other large countries and regions around the world appears to be lagging behind the US and Europe but these may spring up as net zero targets are set, roadmaps drawn up and government policy formulated. These places could also benefit from watching what works and does not work elsewhere first. Back in the US and Europe the next tricky part of this process will be bridging the gap between government subsidy and commercial viability.
ACC and Ambuja Cements' Geoclean launch new facilities
20 March 2024India: ACC and Ambuja Cements' Geoclean has launched two new facilities for sustainable waste management. The Ambuja Marwar pre-processing and co-processing facility in Rajasthan can convert 220,000t/yr of refuse into alternative fuel, while the ACC Jamul co-processing facility will process an additional 120,000t/yr.
The Ambuja Marwar facility, in collaboration with the Ambuja Marwar Farmer Producer Organisation, aims to source 50,000t/yr of agricultural waste from local farmers. This initiative will also increase the plant's thermal substitution rate to 15%. Similarly, the ACC Jamul facility will enhance its thermal substitution rate to 10%, reducing CO₂ emissions through the co-processing of waste in the cement kiln.
France: Fives Group has partnered with Holcim to decarbonise its cement production processes. Fives conducted successful hydrogen tests at the La Malle site in France, achieving over 50% hydrogen substitution in cement production. This result also enabled a significant increase in the use of alternative fuels while still maintaining cement quality. The group has also developed a digital model to tailor this process to each cement plant's unique requirements.
Denmark: Norway-based Geminor has appointed Per Mernelius as Country Manager for Geminor Denmark. He succeeds Kasper Thomsen in the position, who was recently appointed as the Operations Director for Geminor Group. Mernelius is currently the Country Manager for Sweden and he will add the new responsibilities to this role. Initially, he will be in charge of the Danish market for 12 months, pending the appointment of a new country manager in Denmark.
Mernelius commented “Denmark and Sweden are our two biggest downstream markets, with nearly 1Mt of imported refuse-derived fuel/solid recovered fuel in 2023. As such, many similarities open up for synergies in the coming year. An important factor is logistics, and how we can coordinate the two markets for more efficient operations. Our ambition is to grow further and to cater for the existing over-capacity within energy recovery in Scandinavia.”
Mernelius has worked for Geminor since 2016. Before this he worked for Sweden-based energy supplier Jönköping Energi. He is a graduate of the Swedish University of Agricultural Sciences.
Spain: Cemex España plans to install a new tertiary mill in its Alicante cement plant’s refuse-derived fuel (RDF) line. The project, called Molentis, is scheduled for completion in early 2025 and will cost €6m. The Molentis upgrade will help the Alicante cement plant to raise its RDF substitution rate by 8%, according to the producer. This in turn will reduce its CO2 emissions by 6700t/yr. The Spanish Ministry of Industry, Energy and Tourism granted €4.4m toward the project to Cemex España under its Innovation and Sustainability Plan.
Cemex España director of operations Benjamín Cabrera said "Molentis will enable us to advance towards climate neutrality and position the Alicante factory at the forefront of new technologies in the decarbonised industry."
Eagle Materials publishes 2023 Sustainability Report
22 February 2024US: Eagle Materials has outlined its climate change mitigation successes in its 2023 Sustainability Report. During 2023, the company increased its production of blended cement products, including Portland Limestone Cement (PLC). It commenced a major CO2 reduction study with the US Department of Energy, and established a Greenhouse Gas Reduction Team to explore new clean technologies. Eagle Materials says that it is currently working to increase the use of alternative fuels at three of its cement plants.
Brazil: Secil subsidiary Supremo Secil Cimentos will invest US$20.3m in an upcoming expansion of its Adrianópolis cement plant. Commencing in July 2024, the expansion will raise the plant’s clinker capacity by 10% and enable it to increase its alternative fuel (AF) substitution rate from 25 – 30% to 40%, and eventually to 50% by 2030. To date, AF use at the plant has reduced its cumulative consumption of petcoke by 100,000t.
CEO Paulo Nascentes highlighted the transformative impact of the Adrianópolis plant on its host community, with its initial investment of US$176m and a subsequent US$41.7m in previous upgrades to date. "One of the reasons why the Paraná government allowed the plant was because Adrianópolis was very neglected. The arrival of Supremo transformed the city," he said.
Cementos Portland Valderrivas' Alcalá de Guadaíra cement plant to raise alternative raw materials and alternative fuels use
30 January 2024Spain: Cementos Portland Valderrivas' Alcalá de Guadaíra plant has secured environmental clearance to use more alternative raw materials and alternative fuels (AF) in its cement production.
The company said "This achievement is a further boost to our sustainable work practices, respecting the environment and contributing to combatting climate change."
UK: Aggregate Industries has successfully removed gas duct sections from the electrostatic precipitation filter at its Cauldon cement plant in Staffordshire. This will make way for the installation of a new CTP Team process kiln bag filter, following an annual shutdown.
Cauldon plant capital expenditure manager Mark Powling said “The new bag filter not only provides the best available technology, but will enable the Cauldon plant to optimise its plant performance, driving its decarbonisation and alternative fuel strategies. Thanks to the project team for their efforts and hard work to date.”
India: Sagar Cements recorded sales of US$80.5m in the third quarter of the 2024 financial year, up by 16% year-on-year from US$69.3m during the corresponding quarter of the previous financial year. Cement sales volumes rose by 14% year-on-year. The Hindu BusinessLine News has reported that the growth allowed Sagar Cements to reduce its net losses by 57%, to US$1.22m.
Managing director Sreekanth Reddy said “Favourable prices prevailed in our key markets. As far as EBITDA and margins are concerned, we observed a significant enhancement on a per-tonne basis, consistent with our earlier projections.” Reddy added “We anticipate this positive trend to persist in the future, supported in part by higher utilisation levels of recently-acquired units and strategic initiatives aimed at promoting the use of green power, alternative fuels and the deployment of electric trucks and wheel loaders.”