Displaying items by tag: hydrogen

Spain: Mexico-based Cemex and its venture capital subsidiary Cemex Ventures have invested in Waste to Energy Advanced Solutions (WtEnergy), an energy startup company that has developed a process to transform solid waste into synthesis gas (Syngas) for industrial purposes.

WtEnergy converts biomass and non-recyclable waste into Syngas, which can be used in the short-term as a fossil fuel alternative or be upgraded in the medium- and long-term to gases such as biomethane or pure hydrogen. Cemex intends to incorporate this energy source into its clinker and cement manufacturing process, looking to further reduce the carbon footprint of its operations. Cemex aims to increase its fossil fuel substitution rate by 20% by 2030.

Gonzalo Galindo, the president of Cemex Ventures, said, “This investment aligns with our strategy to find innovative clean fuel and energy sources for the cement industry.” He added, “We have outlined an ambitious rollout strategy across multiple operations, starting with Spain and other European countries before expanding to other international markets.”

Mexico: Cemex Mexico plans to install hydrogen injection systems at four cement plants across Mexico. The producer will use the technology to increase alternative fuel (AF) substitution at the plants by 8 - 10%. A 40% reduction in Scope 3 purchased fuel emissions forms part of Cemex's 2020 - 2030 CO₂ emissions reduction strategy. Through the decarbonisation and circular economy pillars of its Future in Action plan, the group aims to become carbon neutral by 2050.

Cemex Mexico president Ricardo Naya said "Hydrogen is a key technology to accelerate the implementation of our climate action roadmap."

The El Financiero newspaper has reported that Cemex set a new group record AF substitution rate of 34% in September 2022. It uses hydrogen at all of its European cement plants and at one plant in the Dominican Republic.

In Australia and New Zealand, four producers operate a total of six integrated cement plants, with another 13 grinding plants situated in Australia. This relatively small regional cement industry has been on a decades-long trajectory towards ever-greater sustainability – hastened by some notable developments in recent weeks.

Oceania is among the regions most exposed to the impacts of climate change. In Australia, which ranked 16th on the GermanWatch Global Climate Risk Index 2021, destructive changes are already playing out in diverse ways.¹ Boral reported 'significant disruption' to its operations in New South Wales and southeast Queensland due to wet weather earlier in 2022. This time, the operational impact was US$17.1m; in future, such events are expected to come more often and at a higher cost.

Both the Australian cement industry and the sole New Zealand cement producer, Golden Bay Cement, have strategies aimed at restricting climate change to below the 2° scenario. Golden Bay Cement, which reduced its total CO₂ emissions by 12% over the four-year period between its 2018 and 2022 financial years, aims to achieve a 30% reduction by 2030 from the same baseline. The Australian Cement Industry Federation (CIF)'s 2050 net zero cement and concrete production roadmap consists of the following pathways: alternative cements – 7%; green hydrogen and alternative fuels substitution – 6%; carbon capture – 33%; renewable energy, transport and construction innovations – 35% and alternative concretes – 13%, with the remaining 6% accounted for by the recarbonation of set concrete.

Australia produces 5.2Mt/yr of clinker, with specific CO₂ emissions of 791kg/t of clinker, 4% below the global average of 824kg/t.² Calcination generates 55% of cement’s CO₂ emissions in the country, and fuel combustion 26%. Of the remainder, electricity (comprising 21% renewables) accounted for 12%, and distribution 7%. Australian cement production has a clinker factor of 84%, which the industry aims to reduce to 70% by 2030 and 60% by 2050. In New Zealand, Golden Bay Cement's main cement, EverSure general-purpose cement, generates CO₂ at 732kg/t of product.³ It has a clinker factor of 91%, and also contains 4% gypsum and 5% added limestone.

Alternative raw materials

Currently, Australian cement grinding mills process 3.3Mt/yr of fly ash and ground granulated blast furnace slag (GGBFS). In Southern Australia, Hallett Group plans to commission its upcoming US$13.4m Port Augusta slag cement grinding plant in 2023. The plant will use local GGBFS from refineries in nearby Port Pirie and Whyalla, and fly ash from the site of the former Port Augusta power plant, as well as being 100% renewably powered. Upon commissioning, the facility will eliminate regional CO₂ emissions of 300,000t/yr, subsequently rising to 1Mt/yr following planned expansions. Elsewhere, an Australian importer holds an exclusive licencing agreement for UK-based Innovative Ash Solutions' novel air pollution control residue (APCR)-based supplementary cementitious material, an alternative to pulverised fly ash (PFA), while Australian Graphene producer First Graphene is involved in a UK project to develop reduced-CO₂ graphene-enhanced cement.

Golden Bay Cement is investigating the introduction of New Zealand's abundant volcanic ash in its cement production.

Fuels and more

Alternative fuel (AF) substitution in Australian cement production surpassed 18% in 2020, and is set to rise to 30% by 2030 and 50% by 2050, or 60% including 10% green hydrogen. In its recent report on Australian cement industry decarbonisation, the German Cement Works Association (VDZ) noted the difficulty that Australia's cement plants face in competing against landfill sites for waste streams. It described current policy as inadequate to incentivise AF use.

Cement producer Adbri is among eight members of an all-Australian consortium currently building a green hydrogen plant at AGL Energy’s Torrens Island gas-fired power plant in South Australia.

Across the Tasman Sea, Golden Bay Cement expects to attain a 60% AF substitution rate through on-going developments in its use of waste tyres and construction wood waste at its Portland cement plant in Northland. The producer will launch its new EcoSure reduced-CO₂ (699kg/t) general-purpose cement in November 2022. In developing EcoSure cement, it co-processed 80,000t of waste, including 3m waste tyres. The company says that this has helped in its efforts to manage its costs amid high coal prices.

Carbon capture

As the largest single contributor in Australia's cement decarbonisation pathway, carbon capture is now beginning to realise its potential. Boral and carbon capture specialist Calix are due to complete a feasibility study for a commercial-scale carbon capture pilot at the Berrima, New South Wales, cement plant in June 2023.

At Cement Australia's Gladstone, Queensland, cement plant, carbon capture is set to combine with green hydrocarbon production in a US$150m circular carbon methanol production facility supplied by Mitsubishi Gas Chemical Company. From its commissioning in mid-2028, the installation will use the Gladstone plant's captured CO₂ emissions and locally sourced green hydrogen to produce 100,000t/yr of methanol.

More Australian cement plant carbon capture installations may be in the offing. Heidelberg Materials, joint parent company of Cement Australia, obtained an indefinite global licence to Calix's LEILAC technology on 28 October 2022. The Germany-based group said that the method offers effective capture with minimal operational impact.

Cement Australia said “The Gladstone region is the ideal location for growing a diverse green hydrogen sector, with abundant renewable energy sources, existing infrastructure, including port facilities, and a highly skilled workforce." It added "The green hydrogen economy is a priority for the Queensland government under the Queensland Hydrogen Industry Strategy.”

Logistics

Australian and New Zealand cement facilities' remoteness makes logistics an important area of CO₂ emissions reduction. In Australia, cement production uses a 60:40 mix of Australian and imported clinker, while imported cement accounts for 5 – 10% of local cement sales of 11.7Mt/yr.

Fremantle Ports recently broke ground on construction of its US$35.1m Kwinana, Western Australia, clinker terminal. It will supply clinker to grinding plants in the state from its commissioning in 2024. Besides increasing the speed and safety of cement production, the state government said that the facility presents 'very significant environmental benefits.'

Conclusion

Antipodean cement production is undergoing a sustainability transformation, characterised by international collaboration and alliances across industries. The current structure of industrial and energy policy makes it an uphill journey, but for Australia and New Zealand's innovating cement industries, clear goals are in sight and ever nearer within reach.

References

1. Eckstein, Künzel and Schäfer, 'Global Climate Risk Index 2021,' 25 January 2021, https://www.germanwatch.org/en/19777

2. VDZ, 'Decarbonisation Pathways for the Australian Cement and Concrete Sector,' November 2021, https://cement.org.au/wp-content/uploads/2021/11/Full_Report_Decarbonisation_Pathways_web_single_page.pdf

3. Golden Bay Cement, 'Environmental Product Declaration,' 12 May 2019, https://www.goldenbay.co.nz/assets/Uploads/d310c4f72a/GoldenBayCement_EPD_2019_HighRes.pdf

Europe: Ireland-based Ecocem and seven other European sustainable technology companies have launched the Cleantech Scale-Up Coalition, with the backing of green investment funding network Breakthrough Energy. The coalition will work to contribute to European climate neutrality, energy autonomy and industrially competitiveness. Other participants' fields include carbon capture, green hydrogen technologies, transport electrification, batteries and recycling.

Ecocem's managing director Donal O’Riain said “Scalable, low carbon cements, which can decarbonise the European cement industry by 50% by 2030, are ready to deploy today. To do so, they need to be rapidly industrialised. This coalition, which allows Ecocem to combine forces with other world-class companies, will enable our ambition by working to remove the barriers to an accelerated decarbonisation of European, and global, industry.”

Australia: Cement Australia’s Gladstone cement plant in Queensland will host a study of methanol production from green hydrogen and captured CO₂. Japan-based Mitsubishi Gas Chemical Company will supply its green methanol production technology, while hydrogen and oxygen feedstocks will be sourced locally. Cement Australia and Mitsubishi Gas Chemical Company will collaborate on commercialisation of their green methanol. Cement Australia said that carbon capture and its utilisation in value added products is a strategic pillar of the company’s decarbonisation roadmap.

The cement producer said “The Gladstone region is the ideal location for growing a diverse green hydrogen sector, with abundant renewable energy sources, existing infrastructure, including port facilities, and a highly skilled workforce. The green hydrogen economy is a priority for the Queensland government under the Queensland Hydrogen Industry Strategy.”

South Africa: Saudi Arabia-based ACWA Power and Industrial Development Corporation of South Africa (IDC South Africa) have partnered to explore the development of green hydrogen infrastructure opportunities in South Africa. Together, they will aim to accelerate the country's transition into a green hydrogen economy across industries including cement production. ACWA Power projected the potential value of developments at US$10bn.

South Africa is committed to achieving net zero CO₂ emissions by 2050.

ACWA Power's vice chair and chief executive officer Paddy Padmanathan said "As a company that is driving the energy transition, ACWA Power is proud to work closely with the IDC, with whom we share a robust working history, and today we are delighted to take our collaboration further. I am confident that our expertise in developing mega-scale green hydrogen projects in other geographies will enable us to successfully create a new avenue of sustainable energy generation - one that will pave the path to further progress.”

Spain: Brazil-based Votorantim Cimentos' Córdoba, Niebla and La Araña cement plants in Andalusia are at the centre of a planned Euro1bn decarbonisation project by the company. Votorantim Cimentos will publish details of its plans, which include renewably powered green hydrogen and biofuels production, in early 2023.

Votorantim Cimentos Europe, Asia and Africa CEO Jorge Wagner said "We need agility with the administration, because the investments are stratospheric and long-term. We want to obtain subsidies, taking advantage of European funds." He concluded "We have the opportunity to carry out a very beautiful project in Andalusia and beat the Americans."

Belgium: Holcim and TotalEnergies have signed a memorandum of understanding (MOU) to work towards the full decarbonisation of the Obourg cement plant. Various energies and technologies will be assessed for the capture, utilisation and sequestration (CCUS) of around 1.3Mt/yr of CO₂ emitted by the unit. The project will include working towards building an oxyfuel switchable kiln as part of an upgrade project at the plant and the transportation and use of the captured CO₂ by TotalEnergies for a synthetic fuel producing scheme and/or deposit in geological storage in the North Sea.

TotalEnergies will also assess the development of renewable projects to power a new electrolyser, which would generate the green hydrogen needed to produce synthetic fuels. This new renewable energy production capacity would also power Holcim’s new oxyfuel kiln. Finally, the oxygen emitted by the electrolyser would be used to fuel the new kiln.

Bart Daneels, the chief executive officer of Holcim Belgium said “Cement industry decarbonisation is extremely challenging because of the process's inevitable CO₂ emissions, which put us firmly in the hard-to-abate sector. CCUS is vital for Obourg to become the first net carbon neutral clinker plant in northwest Europe. We are very happy to work with TotalEnergies to accelerate the development of these CCUS solutions for GO4ZERO. By joining the first movers, we want to set the standards for future clinker manufacturing plants.”

India: Adani Group plans to invest US$100bn in capital expenditure across all of its operations between 2022 and 2032. Mint News has reported that the conglomerate will establish 45GW-worth of new hybrid renewable power plants under the plans. It will also build three new green hydrogen plants, with a combined capacity of 3Mt/yr. It plans to support the latter move with an investment of US$70bn in the establishment of an integrated hydrogen-based value chain.

Greece: Titan Cement Group says that its H2CEM green hydrogen projection has received inclusion under the EU Important Project of Common European Interest (IPCEI) Hy2Use. Hy2Use consolidates funding for hydrogen electrolysis, transport and storage development projects across Europe. Titan Cement Group’s H2CEM project consists of Euro60m-worth of new green hydrogen production installations at its Drepano, Efkarpia and Kamari cement plants. The installations will produce hydrogen through electrolysis using renewable energy sources. The producer says that use of the hydrogen as cement fuel will reduce the plants’ CO2 emissions per tonne of cement by 8%, corresponding to 160,000t/yr of emissions. H2CEM is Hy2Use’s only cement plant project.

Titan Cement Group aims to achieve carbon neutrality by 2050.