Displaying items by tag: Alternative Fuels

Philippines: Republic Cement's resource recovery group, Ecoloop, has diverted 21.4 billion plastic sachets in 2023, equating to 110,000t of discarded materials utilised as alternative fuel in cement co-processing. This marks a 30% reduction in CO₂ emissions per ton of cement, according to The Philippine Star newspaper.

Ecoloop director Angela Edralin-Valencia said "This achievement represents a significant amount of materials diverted from landfills and bodies of water, such as oceans and urban waterways and further underscores Republic Cement’s commitment to environmental stewardship and circular economy principles."

Mexico: A second industrial byproducts processing line has been inaugurated at the Cemento Cruz Azul plant in Tepezalá, Aguascalientes. The new facility, which cost US$8.5m, will create 100 jobs and convert over 66,000t/yr of post-consumer materials into energy for the cement plant's processes.

Víctor Manuel Velázquez Rangel, president of the board of directors of Cooperativa Cruz Azul, said "This is the result of joint work, teamwork and a shared vision with the State Government, which has always been concerned about the carbon footprint, sustainability and the environment. With this project we leave testimony of our great commitment and demonstrate that innovation and technology can go hand in hand with the preservation of the environment."

Philippines: Holcim Philippines will invest US$6.5m to upgrade its La Union plant and increase the use of alternative fuels and raw materials to 40%. The project will be implemented by Sinoma CBMIPH Construction and will be completed by late 2025, reports the Manila Bulletin.

Nicolas George, Holcim Philippines president and CEO, said the investment aims to reduce CO₂ emissions, promote recycling, support local waste management and provide income for northern Luzon farmers, who will supply biomass residues as alternative fuels.

General manager Zeng Youbing of Sinoma CBMIPH Construction said “This marks the third collaboration between Sinoma CBMIPH and Holcim Philippines since 2021. We are honoured to contribute to Holcim Philippines' decarbonisation and sustainability goals.”

Mexico: Regenera, a subsidiary of Cemex, has launched a pilot project at its Broquers Ambiental plant in Querétaro to transform the city’s organic waste into alternative fuel using a drying process known as ‘biosecado’. This initiative makes Querétaro the first zero waste municipality in Mexico, according to the company. The plant now processes almost 90% of the municipality’s waste, transforming over 8000t monthly into biomass to reduce the amount of material sent to landfill.

Vice president of urban solutions at Cemex Mexico, Antonio Balmori, said "This project that we started today at our Broquers Ambiental plant excites me very much because it will take the city of Querétaro to the next level in waste management, where we will seek to take advantage of 100% of the urban solid waste generated in the municipality."

Canada: Minister of Environment and Climate Change, Steven Guilbeault, announced the reinvestment of up to US$1.6m from industrial pollution pricing proceeds into a new emissions reduction project at St Marys Cement in St Marys, Ontario. This initiative will involve the installation of a new kiln utilising low-carbon fuels, including discarded plastics, to reduce the use of carbon-intensive fuels used in the manufacturing process by up to 30%. The project aims for a reduction of over 39,900t of greenhouse gas emissions by 2030, according to Foreign Affairs news.

Oman: Oman's solid waste management entity, Be'ah, has reported progress in its strategy to transition solid waste from landfill disposal to refuse derived fuel (RDF), according to Oman Daily Observer.

In 2023, Be'ah launched initiatives focusing on transforming waste into RDF, electrical and electronic waste and green waste. The company has signed an agreement with Oman Cement Company to provide tyre derived fuel for its energy needs, eventually expanding to include RDF. A memorandum of understanding (MoU) was signed with Oman Cement during Oman Sustainability Week to explore the utilisation of RDF as an additional alternative fuel source, according to the company’s 2023 sustainability report.

Chair of Be’ah, Ahmed al Subhi, said "We take pride in our strategic resource management initiatives, having set ambitious targets for transitioning to a circular economy, including achieving 60% waste utilisation by 2025 and 80% by 2030.”

South Korea: South Korean cement manufacturers recently convened at an event hosted by the Korea Cement Association and the Korea Industry Alliance Forum to discuss how to achieve carbon neutrality. The industry currently faces financial challenges in upgrading equipment due to low cement prices. However, it has achieved a 20% decrease in greenhouse gas emissions per tonne of cement since 2014, aided by the use of alternative fuels and investment in energy efficiency. The Korean government now requires that greenhouse gases be cut by 12% by 2023 from 2018 levels by 53% by 2050.

The industry currently uses post-consumer plastics as fuels instead of fossil fuels and incorporates byproducts from other industries, like sludge. However, some environmental groups have labelled cement made from industrial byproducts as ‘garbage cement’ claiming it contains hexavalent chromium levels more than four times the EU’s allowable limits. The use of plastics as alternative fuel has also sparked complaints from local waste collection and incineration companies, who argue that cement companies are taking away their business.

Professor Kim Jin-man from Kongju National University said "We also need to focus on developing high-performance clinker, advanced chemical admixtures for concrete, and accelerators that shorten concrete curing times."

Mexico: The Secretariat of the Environment (Sedema) has reported that over 5600 tyres collected from illegal dumps in the districts of Xochimilco and Gustavo Madero have been transported to a treatment plant to be used as an alternative fuel for cement production. This initiative is part of a strategy to manage tyre waste, supported by a collaboration with Geocycle Mexico. The effort aims to address public environmental issues caused by tyre disposal in public spaces and environmentally sensitive areas, potentially leading to wildfires. Sedema also plans to expand tyre collection through the Reciclatrón Program to promote comprehensive waste management and reduce the reliance on fossil fuels and mineral extraction.

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.