Displaying items by tag: Calix

In the two and a half years since Calix brought together cement producers across corporate and national boundaries to form the first Low Emissions Intensity Lime And Cement (LEILAC-1) consortium and commissioned a carbon capture installation at the Lixhe cement plant in Belgium on 10 May 2019, carbon capture and storage (CCS) has passed some major milestones. New installations have made Global Cement headlines from Canada (at Lehigh Cement’s Edmonton plant in November 2019) to China (at a China National Building Material (CNBM) plant in July 2021). Twelve other European cement plants now host current or planned carbon capture trials – including the first full-scale system, at HeidelbergCement’sBrevik plant in Norway. A second Calix-led project in Germany, LEILAC-2, attracted Euro16m-worth of funding from the European Union in April 2020.

The work of LEILAC-1 – backed by HeidelbergCement, Cemex, Lhoist, Tarmac and others, with Euro12m in funding – set the benchmark in innovation. Its pilot plant successfully captured 100% of 'unavoidable' process emissions by indirectly heating raw materials inside a vertical steel tube. Called direct capture, the model removes a CO₂ separation step, as our subsequent price analysis will reflect.

In October 2021, the LEILAC-1 consortium published its report of the concluded Lixhe trial. It described the three-fold key successes of the study:

1) Both limestone and raw meal may be processed;

2) CO₂ is successfully separated;

3) The energy penalty for indirect calcination is not higher than for conventional direct calcination.

Additionally, Calix’s first departure into the cement sector has demonstrated that its model exhibits no operational deterioration, does not suffer from material build-up and has no impact on the host plant when used in cement production. The plant’s clinker capacity remained the same as before the trial. Most importantly of all, the Lixhe cement plant recorded no process safety incidents throughout the duration of the trial.

The study has also put an evidence-based price tag on industrial-scale CCS at a cement plant for the first time: Euro36.84/t. Figure 1 (below) plots the full-cycle costs of three different carbon capture installations at retrofitted 1Mt/yr cement plants using 100% RDF, including projections for transport and storage. Installation 1 is an amine-based carbon capture system of the kind installed in the Brevik cement plant’s exhaust stack; Installation 2 is the Calix direct capture system and Installation 3 consists of both systems in combination. Direct capture’s costs are the lowest, while the amine retrofit and the combination installation are close behind at Euro43.68/t and Euro43.25/t respectively.

Figure 1: Full-cycle costs of three different carbon capture installations at retrofitted 1Mt/yr cement plants using 100% RDF

Installations 1 and 3 both entail additional energy requirements for the separation of CO₂ from flue gases and air. With the inclusion of the CO₂ produced thereby, the cost of Installation 1 rises to Euro94/t of net CO₂ emissions eliminated, more than double that of Installation 2 at Euro38.21/t. The combination of the two in Installation 3 costs Euro67.3/t, 76% more than direct capture alone. Figure 2 (below), breaks down the carbon avoidance costs for each one and compares them.

Figure 2: Carbon avoidance costs of three different carbon capture installations at retrofitted 1Mt/yr cement plants using 100% RDF

The Global Cement and Concrete Association (GCCA)’s seven-point Roadmap to Net Zero strategy puts CCS at the forefront of concrete sector decarbonisation. CCS is expected to eliminate an increasing share of global concrete’s CO₂ emissions, rising to 36% in 2050 – by then 1.37Bnt of a total 3.81Bnt. This will depend on affordability. Calix’s model has reduced the capital expenditure (CAPEX) of a carbon capture retrofit by 72% to Euro34m from Euro98m for the amine-based equivalent. When built as part of a new plant, the CAPEX further lowers to Euro27m. Both models may also be retrofitted together, for Euro99m. In future, Calix expects to install direct capture systems capable ofachieving Euro22/t of captured CO₂. By contrast, the cost of emitting 1t of CO₂ in the EU on 11 October 2021 was Euro59.15.

In what it calls the Decade to Deliver, the GCCA aims to achieve a 25% CO₂ emissions reduction in global concrete production between 2020 and 2030, in which CCS plays only a minor part of less than 5%. LEILAC-1 presents a visionof affordable carbon avoidance which complements cement companies’ 2030 CO₂ reduction aspirations.

Unlike conventional CCS methods, however, direct capture only does two thirds of a job – eliminating the emissions of calcination, but not combustion. This would appear to make it unsuited to cement’s longer-term aim of carbon neutrality by 2050 in line with the Paris Climate Accords’ 2°C warming scenario. On the other hand, direct capture is not designed to work alone. Calix recommends use of the technology in conjunction with a decarbonised fuel stream to eliminate the plant’s remaining direct emissions. This increases the price - by 47% to Euro56.05/t of CO₂ avoided for biomassand by more than double to Euro104.48/t for an E-kiln.

The Lixhe cement plant’s carbon capture story is one of a successful crossover from one industry into another: Calix previously applied the technology in the Australian magnesite sector. Realisation of the Calix carbon capture vision in the global cement industry is a challenge primarily due to the scale of the task. It will require continued collaboration between companies and with partners outside of the industry. Further than this, parliaments must continue to enact legislation to make emission mitigation the economic choice for producers.

Belgium: The low-emissions intensity lime and cement (LEILAC) consortium has published the results of its LEILAC-1 carbon capture and storage (CCS) study at HeidelbergCement’s Lixhe cement plant in Visé. The study found the cost of CCS to be Euro14 – 24/t of CO2 captured. It found that full-chain CO2 mitigation projects incur costs are Euro39 – 80/t, depending on transport and storage selections.

EU Emissions Trading Scheme (ETS) credits currently cost Euro62/t.

It’s been a good week for carbon capture in cement production with new projects announced in France and Poland.

The first one is a carbon capture and utilisation (CCU) collaboration between Vicat and Hynamics, a subsidiary of energy-provider Groupe EDF. The Hynovi project will see an integrated unit for capturing CO₂ and producing methanol installed at Vicat’s Montalieu-Vercieu cement plant in 2025. It aims to capture 40% of the CO₂ from the kiln exhaust stack at the plant by using an oxy-fuel method and installing a 330MW electrolyser to split water into oxygen and hydrogen for different parts of the process. The CO₂ will then be combined with hydrogen to produce methanol with potential markets in transport, chemicals and construction. The setup is planning to manufacture over 0.2Mt/yr of methanol or about a quarter of France’s national requirement. The project was put forward under a call for proposals by the Important Projects of Common European Interest (IPCEI) program. Pre-notification of its participation in the program has been received from the French government and it is currently being evaluated by the European Commission. Vicat’s decision to choose its Montalieu-Vercieu plant for this project is also interesting since it started using a CO₂ntainer system supplied by UK-based Carbon8 Systems there on an industrial scale in November 2020. This system uses captured CO₂ from the plant’s flue gas emissions to carbonate cement-plant dust and produce aggregate.

The second new project is a pilot carbon capture and storage (CCS) pilot by HeidelbergCement at its Górażdże cement plant in Poland. This project is part of the wider Project ACCSESS, a consortium led by Sintef Energi in Norway that aims to cut carbon capture, utilisation and storage (CCUS) costs and to link CO₂-emitters from mainland Europe to storage fields in the North Sea. The cement plant part in Poland will test an enzyme-based capture method using waste heat at the plant. Another part of the project will look at how the captured CO₂ can then be transported to the Northern Lights storage facility in Norway including the regulatory aspects of cross-border CO₂ transport. ACCSESS started in May 2021 and is scheduled to end in April 2025. It has a budget of around Euro18m with Euro15m contributed by the European Union (EU) Horizon 2020 fund.

HeidelbergCement also says that the second stage of its LEILAC (Low Emissions Intensity Lime And Cement) project at the Hannover cement plant is part of ACCSESS, with both testing of the larger-scale Calix technology to capture CO₂ and the connected transport logistics and bureaucracy to actually get it to below the North Sea. That last point about Calix is timely given that US-based Carbon Direct purchased a 7% stake in Calix in mid-September 2021 for around US$18m. Whilst on the topic of carbon capture and HeidelbergCement don’t forget that the group’s first full-scale carbon capture unit at Norcem’s Brevik cement plant, using Aker Solution’s amine solvent capture technology, is scheduled for commissioning in September 2024. Another carbon capture unit is planned for Cementa’s Slite plant in 2030 but the proposed capture method has not been announced.

Other recent developments in carbon capture at cement plants include Aalborg Portland Cement’s plan to capture and store CO₂ as part of the Project Greensand consortium. The overall plan here is to explore the technical and commercial feasibility of sequestering CO₂ in depleted oil and gas reservoirs in the Danish North Sea, starting with the Nini West Field. The project is still securing funding though, with an Energy Technology Development and Demonstration Program application to the Danish government pending. However, the Danish Parliament decided in December 2021 to set aside a special funding pool to support a CO₂ storage pilot project so this initiative seems to be making progress. If the application is successful, the consortium wants to start work by the end 2021 and then proceed with an offshore injection pilot from late 2022. How and when Aalborg Portland Cement fits in is mostly unknown but a 0.45Mt/yr capture unit at its Rørdal cement plant is tentatively planned for 2027. There’s also no information on the capture method although Aker Carbon Capture is also part of the Project Greensand consortium. Finally, also in September 2021, Chart Industries subsidiary Sustainable Energy Solutions announced that it had selected FLSmidth to help adapt and commercialise its Cryogenic Carbon Capture carbon capture and storage (CCS) system for the global cement industry.

All of this tells the cynics in the audience that a large international climate change meeting is coming up very soon. Most cement companies will likely want some good news to show off when the 2021 United Nations Climate Change Conference (COP26) dominates the media agenda in November 2021. Other observations to point out include that none of the projects above are full-scale industrial carbon capture installations, most of them are consortiums of one sort of another and that they are all subsidised or want to be. While hydrogen and CO₂ networks get built this seems inevitable. Yet, we’re not at the stage where cement companies just order carbon capture units from a supplier, like they might a new clinker cooler or silo, without the need for long lists of partners. When this changes then carbon capture looks set to flourish.

On a final note, the UK is currently experiencing a shortage of commercially-used CO₂. The reasons for this have nothing to do with the cement industry. Yet consider the constant doom-and-gloom about record global CO₂ emissions and the sheer amount of effort going into reducing this by the projects mentioned above and others. Life has a sense of humour at times.

For a view on the CO₂ sequestration permitting process in the US look out for the an article by Ralph E Davis Associates, in the forthcoming October 2021 issue of Global Cement Magazine

Australia: US-based Carbon Direct has bought a 7% stake in Calix. Reuters News has reported the value of the stake as US$17.7m. Reuters News has reported that Calix plans to use the proceeds to scale up its carbon capture and storage (CCS) technology, as demonstrated at the LEILAC and LEILAC 2 installations at Lixhe, Belgium, and Hanover, Germany.

Calix chief executive officer Phil Hodgson said "As the world puts emissions trading schemes in place, CCS does start to look like a multibillion dollar addressable market.”

Austria/Australia: Refractory producer RHI Magnesita and Calix say they have started a memorandum of understanding to develop a flash calciner for use in the production of refractory materials, to enable CO₂ separation for either utilisation or storage. The companies have agreed to run studies up to and including basic front-end engineering and design for a commercial-scale demonstration facility at an RHI Magnesita site.

RHI Magnesita and Calix started discussing a collaboration in early 2019. The application of Calix's technology to refractory products has been the subject of pilot scale test work during 2020, with larger scale test work currently underway.

Luis Bittencourt, chief technology officer of RHI Magnesita said, "We are pleased to be working with Calix on this project, which is a key part of the research and development programme on CO₂ emissions reduction that we are carrying out over the next five years. Together with our partners at Calix, we are seeking to develop new technologies for the capture, storage and utilisation of CO₂ that would otherwise be emitted during the refractory production process." Phil Hodgson, the managing director of Calix added that the company was also looking at strategic opportunities in its magnesium oxide businesses.

Australia: Calix has joined as a partner of the Heavy Industry Low-carbon Transition Cooperative Research Centre (HILT CRC). The initiative brings together heavy industry players, government and research and aims to boost the capability of Australian companies to remain globally competitive by capitalising on existing mineral and renewable energy resources to become international producers and exporters of low-carbon products. HILT CRC has secured US$29m from the government. This joins funding of US$158m in direct and in-kind contributions from its partners over the last decade.

“It is a chance for us to demonstrate the technology developed for CO₂ mitigation in the production of cement and lime through our European LEILAC-1 and 2 projects in an Australian setting, as well as explore other more sustainable applications for our technology in heavy industry, backed by this impressive team of researchers and industrial participants," said Calix’s managing director Phil Hodgson.

As part of the HILT CRC, Calix will continue to develop its technology for the reduction of carbon emissions from lime and cement production, and also use its Calix Flash Calciner (CFC) technology to develop other more processing applications such as for bauxite processing for the aluminium industry and production of calcined clay from kaolinite for use in new lower carbon cements.

HILT CRC’s core industrial partners include Adbri, Alcoa, Boral, Fortescue, Grange Resources, Liberty, Roy Hill and South32. The initiative has its headquarters in Adelaide and it plans to establish hubs in heavy industry regions of Gladstone, the Pilbara, Northern Tasmania, South Australia’s Upper Spencer Gulf, Western Australia's Kwinana and South West regions, the Southern Highlands of Nnew South Wales and Portland in Victoria.

Australia: Calix has reported the completion of a pre-front-end engineering and design (FEED) study of its Leilac-2 carbon capture and storage (CCS) study. Germany-based HeidelbergCement, Mexico-based Cemex and Portugal-based Cimpor assessed the study. The milestone clears the technology for industrial scale implementation at HeidelbergCement’s Hannover integrated cement plant in Germany. The installation aims to capture 100,000t/yr of CO₂ at an installation cost of Euro23m (+/-30%). The final investment decision will follow after the completion of FEED in early 2022.

Germany: Mexico-based Cemex has announced its planned participation in Australia-based Calix and others’ LEILAC (Low Emissions Intensity Lime And Cement) 2 carbon capture and storage (CCS) project at HeidelbergCement’s Hanover cement plant in Lower Saxony. Cemex previously assisted the LEILAC partnership at its first installation at HeidelbergCement’s cement plant in Lixhe in Belgium. The company said that it will contribute to the technology's development utilising its gasification process expertise, leveraging its skills in alternative fuel (AF) consumption and computational fluid dynamic simulation design.

Global head of research and development Davide Zampini said, "Our participation in the LEILAC 2 project is another example of our continued efforts to deliver net-zero CO₂ concrete products globally by 2050. We are determined to have a significant direct involvement in research and development efforts pursuing high impact technologies in carbon capture, use, and storage."

Germany: HeidelbergCement, Australia-based Calix and a European consortium have chosen the Hanover cement plant in Lower Saxony for the second phase of the LEILAC (Low Emissions Intensity Lime And Cement) carbon capture and storage (CCS) project. The installation will capture 20% of the plant’s capacity or 100,000t/yr of CO₂. The project will take place in three phases, with design completed by June 2021, a complete demonstration installation before the end of 2023 and project completion in 2025. The group previously installed a 25,000t/yr LEILAC CCS system at its Lixhe plant near Liege in Belgium, which completed its test phase in 2020.

Chair Dominik von Achten said, "The LEILAC technology has the potential to enable the cement and lime industries to efficiently capture their process emissions on an industrial scale. The pilot project in Hanover is one of several promising CO₂ capture technologies that we are currently testing at full speed within the HeidelbergCement Group."

Europe: Australia-based Calix has announced that construction will begin on its second low emissions intensity lime and cement (Leilac) carbon capture and storage (CCS) installation at a ‘European cement plant’ on 7 April 2020. ASX ComNews has reported that collaborators on the project, which has received Euro16m under the EU’s Horizon 2020 grant scheme, are Portugal-based Cimpor, Germany-based HeidelbergCement, Germany and France-based energy companies Ingenieurbüro-Kühlerbau-Neustadt (IKN) and Engie and Belgium-based minerals and lime company Lhoist. Calix has said that the 100,000t/yr process emissions capture facility will be operational in late 2024.
The company has appointed Emma Bowring Leilac-2 project leader.

The first Leilac installation was completed at HeidelbergCement’s 1.5Mt/yr integrated Lixhe plant in Belgium’s Limburg province in mid-2019.