Displaying items by tag: Alternative Fuels

Switzerland: Holcim plans to invest around US$278m in its three Swiss cement plants to reduce the use of fossil fuels in cement production and comply with future limits set by the Swiss Air Quality Control Ordinance. The ‘Phoenix’ project alone is expected to cost between US$78 and US$111m, according to Clemens Wögerbauer, chief commercial and sustainability officer at Holcim Central Europe West.

The Phoenix project will reduce the use of lignite for heating cement kilns. A gasifier will be constructed to process waste materials like residual wood, paper sludge and plastics into synthesis gas for heating the kilns. Additionally, a catalyst powered by the kiln's waste heat will be used to reduce nitrogen and ammonia emissions, aligning with future Swiss environmental targets. The Siggenthal plant is expected to reduce its CO₂ emissions by over 30,000t/yr from its current output of 450,000t/yr.

The new facility is scheduled to start operating in 2028 and may be replicated in other Holcim cement plants if successful. The Phoenix initiative will increase the proportion of alternative fuels used from the current 57% to 80%, targeting over 85%.

The National Development and Reform Commission and other government bodies in China released plans this week to cap clinker production capacity at 1.8Bnt/yr by the end of 2025. Energy efficiency of existing capacity will be used as the driver to determine which production lines can remain open. 30% of capacity will be required to be above the benchmark energy efficiency level. Plants below this line will be obliged to upgrade or face elimination.

Points of interest from the longer release include detail on how the authorities intend to promote energy efficiency. Installing improved production line equipment is as might be expected. However, there is also a drive towards low-carbon fuel substitution such as an increased thermal substitution rate (TSR) through the use of alternative fuels (AF), promotion of renewable energy sources and, interestingly, no new cement plants will be able to add captive coal power plants. The government is targeting a TSR of 10% by the end of 2025 with 30% of lines using AF in some form or another. A plan to reduce the clinker factor in cement is also being pushed through for the increased use of blast furnace slag, fly ash, carbide slag, manganese slag and other supplementary cementitious materials. This last point might have big implications for the ferrous slag export market but that’s a story for another day.

Working out how much these new measures will affect the cement sector in China in the short term is not straightforward since it’s unclear what the country’s actual production capacity is and how much of it is actually active. Data from the National Bureau of Statistics of China showed that cement output was 2.02Bnt in 2023. The China Cement Association (CCA) estimated that the capacity utilisation rate was 59% in 2023. So, if the sector were using all of its integrated cement plants flat out, then one might crudely suppose that the national production capacity might be around 3.5Bnt/yr. This guess does not take into account the prevalence of blended cements and a whole host of other factors so should be treated with caution. Given that cement output fell by 5% year-on-year in 2023, output could be just over 1.8Bnt in 2025 if the rate of decline holds. Research by Reuters in April 2024, suggested that the capacity utilisation rate hit 50% in that month, suggesting that the sector could meet the target in 2024 if it’s a particularly bad year. So, provided the production cap is enacted along the same lines of peak-shifting, where plants are temporarily shut for periods, then the target looks well within reach.

As reported in April 2024, the Chinese cement sector has faced rationalisation in recent years as the real estate market collapsed. Output peaked in 2020 and then fell subsequently. Most of the big producers endured falling sales volumes, revenue and profit in 2022, although some managed to resist the continuing decline in 2023. One coping mechanism has been to focus on overseas markets as proposed by the government’s Belt and Road initiative. Huaxin Cement has been a particular proponent of this strategy. The CCA says that China-based companies have invested in and built 43 clinker production lines in 21 countries with a cement production capacity of 81Mt/yr. Another 43Mt/yr of capacity is currently being built outside of China with yet another 25Mt/yr of capacity proposed for construction.

It is interesting, then, to note that the CCA issued an official warning this week to its members to invest ‘cautiously’ in Uzbekistan. The association said in a statement that at the end of April 2024 the country had 46 integrated production lines with a cement production capacity of 38Mt/yr. This is double the country’s demand for cement. Half of this production capacity is managed by China-based companies. It added that the utilisation rate was currently 50%, that the price had dropped by about 40% since 2020 and that competition was ‘fierce.’ Incredibly, another 7Mt/yr of capacity is expected to be added in 2024. The CCA has advised Chinese companies to consider the state of the Uzbek cement market before making any more investments.

The two news stories we have explored this week cover two sides of the same issue: Chinese cement overcapacity. The local market is finally slowing down after a period of phenomenal growth and the big question is what is the actual market demand now that all the big stuff has already been built. The government gives every impression it is using the decline to meet its sustainability goals. Like institutions in many other places it has set itself targets that it seems likely to meet. The flipside of overcapacity at home is investment overseas. China-based plant equipment manufacturers have certainly done well out of this situation. Yet in Uzbekistan, at least, it looks like the cement sector in China has also managed to export its overcapacity. This has created the absurd situation where the CCA has implored its members and others to exercise the same self-discipline abroad that the government extols at home. Another way to put this might be that Chinese cement companies are increasingly unable to make money at home… or in Uzbekistan. This then leaves a query over where else enthusiastic Chinese cement investors may be causing market imbalances. One solution might be for the Chinese government to impose a cap on clinker production by its companies outside the mainland. Whatever happens next though, the introduction of a capacity cap in mainland China marks a decisive change to the local cement sector.

Spain: The Cemex plant in Alcanar has been granted €3m from the PERTE project for industrial decarbonisation, facilitated by the Ministry of Industry. This subsidy is part of a broader initiative involving 19 projects with a total aid of €96m under Line 1 of the programme. Cemex aims to contribute to decarbonisation of the clinker production process at its Alcanar facility by centralising compressed air production to enhance energy efficiency, replacing 14 old compressors with two more powerful and efficient units. The plant also plans to increase the use of alternative fuels in clinker production by integrating waste-derived and biomass fuels.

Spain: The Cemex plant in Morata de Jalón, Zaragoza, has won €2.8m in aid from the Spanish Ministry of Industry's first Perte resolution for industrial decarbonisation. This funding, part of a larger €96m aid package, will support the plant's clinker production process and its transition to using sustainable fuels.

The aid will increase the use of alternative fuels in clinker production by incorporating waste-derived and biomass fuels.

Azerbaijan: Norm Sement Company will utilise sludge from drilling wells for powering its cement plant, following an agreement with the State Oil Company of Azerbaijan (SOCAR), according to Trend. The plant has a capacity exceeding 2.1Mt/yr of cement and 5300t/day of clinker.

A source said "In collaboration with SOCAR, we tried sludge to power Norm Sement last year. Negotiations on a long-term deal are underway. Cooperation to use industrial waste supports the country's green economy strategy.”

Egypt: Cemex has entered an agreement with the authorities in Egypt's Gharbia province to operate the first facility of its circularity solutions business, Regenera. The company will treat over 800t/day of municipal solid waste at the facility to produce alternative fuels and compost, aiming for minimal residual waste to landfill.

"Through Regenera, Cemex seeks to conserve natural resources, reduce greenhouse gas emissions and benefit communities by promoting sustainable development and reducing the environmental impact of industrial activities," the company said.

Australia: Veolia ANZ and ResourceCo have secured a contract to supply over 1Mt of refuse derived fuel (RDF) from their Adelaide facility to Adbri Cement's Birkenhead plant, aiming to replace natural gas and reduce greenhouse gas emissions. According to Veolia, around 1.5Mt of waste will be diverted from landfill during the course of the contract.

Brett Brown, chief operating officer at Adbri, said "Adbri has pioneered the use of RDF in Australia. Cement manufacturing is energy intensive, and the use of alternative fuels is one of the levers we are using to reduce our emissions as part of our goal of net zero by 2050."

Indonesia: The Jakarta administration has commenced the construction of the Rorotan refuse derived fuel (RDF) plant on a 7.8-hectare site in North Jakarta, aiming to process 2,500t/day of waste. The US$75m project is funded from the 2024 regional budget and is expected to be completed by December 2024 and start operations in early 2025. The city of Jakarta produces nearly 8,000t/day of waste, the majority of which goes to the Bantar Gebang landfill in West Java. The facility will convert 35-40% of the waste processed into about 875t/day of alternative fuels.

The Rorotan facility is the second RDF plant initiated by the Jakarta administration, following the Bantar Gebang facility, which began operations in 2023. This new facility marks a shift from the planned waste-to-energy incinerator in Sunter, which was cancelled due to high costs and bureaucratic delays.

Acting Jakarta governor Heru Budi Hartono said "This technology is still a very small part of our larger efforts to address the city's waste problem."

Head of the Jakarta Environment Agency Asep Kuswanto said "The RDF can become another source of revenue for the city, as we can sell the alternative fuel from the facility to industry."

US: Eagle Materials will modernise and expand its Laramie, Wyoming cement plant, increasing its capacity by 50% to approximately 1.2Mt/yr. The expansion includes a new cement distribution facility in northern Colorado. This project aims to cut manufacturing costs by about 25%, generated by the replacement of traditional fuels with lower cost alternative fuels and natural gas, as well as improved operating efficiency. This upgrade will also reduce CO₂ intensity by nearly 20%, according to the company. The US$430m investment also includes upgrading the existing plant, which became operational in 1927 and currently has a capacity of 800,000t/yr. Construction is set to begin immediately, with completion expected in the second half of 2026.

US: Holcim’s Hagerstown plant in Maryland has increased its alternative fuels substitution rate to 45%, equivalent to 58,000t/yr of engineered fuel. This US$11m initiative utilises end-of-life materials like non-recyclable paper, plastics and fibres, sourced from commercial and industrial materials like packaging. Geocycle, a subsidiary of Holcim US, will process these materials at its new Cumberland facility, which has a capacity of up to 75,000t/yr.

Senior vice president of Manufacturing North for Holcim US, Michael Nixon, said "Expanding our alternative thermal energy use to 45% provides multiple environmental and economic benefits, from lowering the net carbon intensity of our cement to reducing our consumption of traditional fuels. Importantly, it enables us to play a role in the circular economy, offering a highly safe and ecological solution for unused materials."