Displaying items by tag: Biomass

Malaysia: Borneo Oil has increased its investment in the upcoming ILPP cement plant in Sabah to US$12m. The oil company has signed a deal to buy a 19.5% stake in the cement company from Makin Teguh. Borneo Oil previously bought shares from Makin Teguh in late 2021. The company said it is making the move to benefit from a positive outlook for the cement sector in the Brunei Darussalam–Indonesia–Malaysia–Philippines East ASEAN Growth Area. It estimates that Sabah has a demand of 1.2 – 1.4Mt/yr of cement.

Borneo Oil says it is the largest private owner of limestone reserves of cement grade quality in Sabah. The ILPP plant is located next to a limestone quarry owned by Borneo Oil and a long-term supply contract for the unit is already in place. The ILPP plant will have a cement production capacity of 0.2Mt/yr when it is completed. Commissioning of the plant is scheduled for the third quarter of 2022. The owners say it will be the first integrated plant in Sabah. It will also be the first micro-cement plant in Malaysia that will use heat recovery and a mixture of fuels, including heavy fuel oil and biomass such as a palm kernel shells.

Canada: St Mary’s Cement plans to apply for a licence to substitute alternative fuel (AF) for a part of its coal, gas and petcoke fuel mix. The plant previously held a two-week AF substitution trial in May 2011. CBC News has reported that the subsidiary of Votorantim Cimentos will present its plan at an evening meeting for the general public on 18 November 2021. The company says that it plans to implement similar AF arrangements to those at its Bowmanville plant, where it uses 90,000t/yr of biomass, wood from construction and demolition and non-recyclable paper and plastics.

Environmental manager Ruben Plaza said "Lower CO₂ emissions is the first consideration and, equally as important, the material has to be approved and available in sufficient quantities with a reliable and sustainable long-term supply."

Kenya: National Cement has awarded a contract to Sinoma International Engineering for the construction of power plants with a total capacity of 35MW. Gelonghui News has reported that the supplier will provide a biomass-fuelled power plant and waste heat recovery (WHR) plant with a combined capacity of 10MW and a further 25MW power station. It previously delivered a WHR system for the producer in 2019.

Spain: Cemex España reopened its Lloseta cement plant in Majorca in mid-April 2021. The unit will start by operating at a low production level until demand levels build, according to the El País newspaper. The plant intends to use alternative fuels such as biomass to reduce its CO₂ emissions. It is also working with the Power to Green Hydrogen Mallorca project to use ‘green’ hydrogen created partly using solar energy. The plant now employs 20 people, compared to 96 before its closure in January 2019.

Japan: Taiheiyo Cement has installed three BWZ bucket elevators and a Louise TKF drag chain conveyor supplied by the Hong Kong-based subsidiary of Aumund at its new power plant at Ofunato. The cement producer uses both biomass and coal at the plant.

Two elevators and the drag chain conveyor are used to transport palm kernel shells (PKS) and palm empty fruit bunches (EFB), which are used as alternative fuels in the power plant. Each has a capacity of up to 150t/hr. The conveying concept is designed so that the different materials are kept apart and enter the silo buffer tanks separately. The third bucket elevator is used for coal handling. It is a gravity discharge type BWZ-S elevator with a capacity of up to 35t/hr.

Hydrogen and its use in cement production has been adding a dash of colour to the industry news in recent weeks. Last week, Lafarge Zementwerke, OMV, Verbund and Borealis signed a memorandum of understanding (MOU) to plan and build a full-scale unit at a cement plant in Austria to capture CO₂ and process it with hydrogen into synthetic fuels, plastics or other chemicals. This week, Air Products and ThyssenKrupp Uhde Chlorine Engineers (TUCE) signed a strategic agreement to work together in ‘key regions’ to develop projects supplying green hydrogen. Both of these developments follow the awarding of UK government funding in February 2020 to support a pilot project into studying a mix of hydrogen and biomass fuels at Hanson Cement’s Ribblesdale integrated plant.

As the title of this column suggests there is an environmental colour code to describe how hydrogen is made for industrial use. This is a bit more codified than when grey cement gets called ‘green’ but it pays to remember what the energy source is. So-called ‘green’ hydrogen is produced by the electrolysis of water using renewable energy sources such as hydroelectric or solar, ‘Grey’ hydrogen is made from steam reforming using fossil fuels and ‘Blue’ hydrogen is similar to grey but has the CO₂ emissions from the fuels captured and stored/utilised. Price is seen as the main obstacle to wider uptake of hydrogen usage as a fuel in industry although this is changing as CO₂ pricing mounts in some jurisdictions and the connected supply chain is developed. A study by BloombergNEF from March 2020 forecasted that green hydrogen prices could become cheaper than natural gas by 2050 in Brazil, China, India, Germany and Scandinavia but it conceded that many barriers would have to be overcome to get there. For example, hydrogen has to be manufactured making it more expensive than fossil fuels without government policy support and its, “lower energy density also makes it more expensive to handle.”

The three recent examples with respect to the cement industry are interesting because they are all exploring different directions. The Lafarge partnership in Austria wants to use hydrogen to aid the utilisation side of its carbon capture at a cement plant. The industrial suppliers, meanwhile, are positioning themselves in the equipment space for the technology required to use hydrogen on industrial plants. Secondly, ThyssenKrupp has alkaline water electrolysis technology that it says it has used at over 600 projects and electrochemical plants worldwide. Air Products works with industrial gas production, storage and handling.

Finally, the Hanson project in the UK will actually look at using hydrogen as a partial replacement for natural gas in the kiln combustion system. A Cembureau position paper in mid-2019 identified that the challenges to explore in using hydrogen in cement production included seeing how its use might affect the physical aspects of the kiln system, the fuel mass flows, temperature profile, heat transfer and the safety considerations for the plant. Later that year a feasibility study by the Mineral Products Association (MPA), Verein Deutscher Zementwerke (VDZ) and Cinar for the UK government department that is funding the Hanson project concluded that a hydrogen flame’s high heat in a burner alone might not make it suitable for clinker formation. However, the study did think that it could be used with biomass to address some of that alternative fuel’s “calorific limitations” at high levels. Hence the demonstration of a mixture of both hydrogen and biomass.

That’s all on hydrogen but, finally, if you didn’t log into yesterday’s Virtual Global CemProducer 2 Conference you missed a treat. One highlight was consultant John Kline’s presentation on using drones to inspect refractory in some hard to reach places. Flying a camera straight into a (cool) pyro-processing line was reminiscent of a science fiction film! Global Cement has encountered the deployment of unmanned aerial vehicles in quarry and stockpile surveys previously but this was a step beyond.

The proceedings pack - including video, presenter slides and delegate list - for the Virtual Global CemProducer 2 Conference 2020 is available to buy now

Japan: Ofunato biomass power plant began generating electricity on 1 January 2020. The 75MW plant is the result of a 65:35 partnership between Taiheiyo Cement and electrical engineering firm Elex formed in July 2016, with a total investment of US$36.5m. It will primarily burn coconut matter to provide electricity for sale and supply to Taiheiyo Cement’s 1.9Mt/yr integrated Ofunato plant. Taiheiyo Cement says that its will generate 520,000MWh/yr, replacing fossil fuels responsible for 0.3Mt/yr of CO2 emissions.

Italy: The Italian cement industry decreased its overall CO2 emissions by 8.9% in 2018 compared to 2017, in part by replacing a higher proportion of fossil fuels with alternative fuels and biomass fuels. The proportion of alternative fuels used increased to 19.7% in 2018 compared to 17.3% in 2019, according to Federbeton. This translates to 387,000t of alternative fuels.

The UK waste fuels industry is facing potential challenge from changing Dutch environmental legislation. As part of its new National Climate Agreement the government in the Netherlands is considering imposing a tariff of Euro32/t on imported refuse-derived fuel (RDF) from the start of January 2020. It also wants to add a CO2 tax of Euro30/t on industrial emitters from the start of 2021.

This is bad news for the UK’s waste export market because 1.28Mt or 44% of exported waste fuels from the UK in 2018 went to the Netherlands. The majority of this was RDF. That was more than the next two biggest destinations, Sweden and Germany, combined. Andy Hill of Cynosure Partners summed up the UK situation in the June 2019 issue of Global Cement Magazine when he said, “The UK generates more far more waste than it has landfill, recycling and alternative fuel capacity combined. Quite simply, that’s why the UK exports and has become a leading force in Europe in terms of RDF and solid recovered fuel (SRF) exports.”

Graph 1: International Waste Shipments exported from England, 2011 – 2018. Source: UK Environment Agency.

Graph 2: Destinations of English waste fuels exports in 2018. Source: UK Environment Agency.

Waste management companies and their representative associations on both sides of the North Sea are not taking this terribly well. Robert Corijn, chair of the RDF Industry Group, a European waste organisation, summed up his members response by pointing out both the environmental cost of the new legislation and the risk to jobs in the UK. “RDF export forms a vital and flexible part of the UK’s waste management system, supporting over 6800 additional jobs in the UK, and saving over 0.7Mt/yr CO₂e emissions.” Robert Loos of the Dutch Waste Management Association made a similar response questioning what exactly the Dutch government was attempting to achieve.

Steve Burton, one of the directors of UK-fuels producer Andusia, went further by saying that the Dutch had proposed the move on environmental grounds because it has an incineration capacity of 8Mt/yr but produces only 6Mt/yr of waste. “So they think that by setting a tax it will significantly curtail how much gets incinerated in the Netherlands and thus produce less CO₂. All very sensible if you consider CO₂ in isolation in your own country. However, the Dutch Government aren’t looking at the bigger picture…” He then went on to point out that the RDF would then either get burnt elsewhere or landfilled resulting in no overall CO₂ emissions reduction. His further assessment, which you can read here, goes on to speculate amongst other things that Dutch Energy for Waste (EFW) plants could end up having to cut their gate fees by more than the import tariff in order to keep running. The state-owned EFW plants would then made a loss for the tax payers until the market stabilised. It should be noted that the data from the Environment Agency indicates that Andusia exported just under 38,000t of RDF to the Netherlands in 2018.

The more prickly issues of using waste fuels may prove tricky for Dutch legislators. Corijn’s distinction above of using CO₂e for the savings from RDF usage is important in this argument since burning RDF and alternative fuels, either for generating energy or making cement, still releases CO₂. In the European Union (EU) it’s the biomass fraction of RDF that’s important for the Emissions Trading Scheme (ETS) and the like because biomass emissions are counted as carbon-neutral. Remove this effect and the benefit of waste fuels are more to do with the waste hierarchy and reusing materials rather than leaving them to rot and release methane, a gas with a more potent global warming effect than CO₂. Despite this, at face value, importing rubbish and then burning it to release yet more unwanted CO₂ may seem nonsensical to the parliamentarians. Perhaps the other thing they should consider is that waste-derived fuels are manufactured products to set specifications. On-going arguments around the world about the developed world ‘exporting its rubbish’ frequently ignore this point.

Since the new Dutch National Climate Agreement is currently at the proposal stage it has a long way to go before it becomes law. First it has to be turned into legislation and then this has to be approved by the Dutch Parliament. As indicated so far the waste management industry will continue to fight its corner with vigour.

Spain: Cemex has signed a Euro117m deal with the local government to convert the land used by the Gádor cement plant in Almeria for use by new projects. These will include projects in solar and wind power generation, waste fuel production from plastics and biomass and a new concrete batching plant, according to Teleprensa. The initiative is intended to create around 400 jobs.

The cement producer has also signed a similar agreement for its Lloseta in Baleares. The company announced in mid-October 2018 that it was planning to close the two plants due to reduced demand for cement and mounting European CO₂ emissions regulations.