Displaying items by tag: funding
Solar-powered cement production
20 November 2019Microsoft co-founder Bill Gates entered the world of cement this week with a public relations blitz for Heliogen. He’s one of the backers of a new Californian technology startup looking to use concentrated solar power (CSP) to power heavy industrial processes like clinker or steel production. The company says it has concentrated solar energy commercially to levels above 1000°C.
Its process, called HelioMax, uses a closed-loop control system to improve the accuracy of a heliostat system. It says it achieves this by using computer vision software to better align an array of mirrors to reflect sunlight towards a single target. Temperatures of up to 1500°C is one of its targets so that it can apply itself to a variety of processes in the cement, steel, mining, petrochemical and waste treatment industries. It says it can do this for US$4.5/MCF. Another target once it hits 1500°C is to start manufacturing hydrogen or synthetic gas fuels.
Heliogen’s press release was picked up by the international press, including Global Cement, but it didn’t mention the similar work that SOLPART (Solar-Heated Reactors for Industrials Production of Reactive Particulates) project is doing in France. This project, backed by European Union Horizon 2020 funding, is developing a pilot scale high temperature (950°C) 24hr/day solar process for energy intensive non-metallic minerals’ industries like cement and lime. It’s using a 50kW solar reactor to test a fluidised bed system at the PROMES (PROcédés, Materials and Solar Energy) testing site in Odeillo, France.
Heliogen’s claim that it can beat 1000°C is significant here but it doesn’t go far enough. Clinker production requires temperatures of up to around 1450°C in the sintering phase to form the clumps of clinker. SOLPART has been only testing the calcination stage of clinker production that suits the temperature range it can achieve. Unless Heliogen can use its method to beat 1450°C then it looks likely that it will, similarly, only be able to cut fossil fuel usage in the calcination stage. If either Heliogen or SOLPART manage to do even this at the industrial scale and it is cost effective then the gains would be considerable. As well as cutting CO2 emissions from fossil fuel usage in cement production this would reduce NOx and SOx emissions. It would also cut the fuel bill.
As usual this comes with some caveats. Firstly, it doesn’t touch process emissions from cement production. Decomposing limestone to make calcium oxide releases CO2 all by itself with no fuel. About one third of cement production CO2 emissions arise from fossil fuel usage but the remaining two thirds comes from the process emissions. However, one gain from cutting the amount of fossil fuels used is a more concentrated stream of CO2 in the flue gas. This can potentially reduce the cost of CO2 capture and utilisation. Secondly, concentrated solar power systems are at the mercy of the weather, particularly cloud cover. To cope with this SOLPART has been testing a storage system for hot materials to allow the process to work in a 24-hour industrial production setting.
Looking more broadly, plenty of cement producers have been building and using solar power to supply electricity. Mostly, these are photovoltaic (PV) plants but HeidelbergCement built a CSP plant in Morocco. Notably, PPC Zimbabwe said this week that it was building a solar plant to supply energy to two of its cement plants. It is doing this in order to provide a more reliable source of electricity than the local grid. India’s Birla Corporation has also said that it is buying a solar energy company today. The next step here is to try and run a cement plant kiln using electricity. This is exactly what Cementa, HeidelbergCement’s subsidiary in Sweden, and Vattenfall have been exploring as part of their CemZero project. The pilot study demonstrated that it was technically possible but only competitive compared with ‘other alternatives in order to achieve radical reductions in emissions.’
None of the above presents short or medium-term reasons for the cement industry to switch to solar power in bulk but it clearly deserves more research and, critically, funding. One particular strand to pull out here about using non-fossil fuel powered clinker production systems is that it produces purer process CO2 emissions. Mounting carbon taxes could gradually force cement plants to capture their CO2 but once the various technologies above become sufficiently mature they could bring this about sooner and potentially at a lower cost. In the meantime the more billionaires who take an interest in cement production the better.
Dalmia Cement takes steps towards carbon capture
25 September 2019Dalmia Cement threw down the gauntlet this week with the announcement of a large-scale carbon capture unit (CCU) at one of its plants in Tamil Nadu, India. An agreement has been signed with UK-based Carbon Clean Solutions Limited (CCSL) to use its technology in building a 0.5Mt/yr CCU. The partnership will explore how CO2 from the plant can be used, including direct sales to other industries and using the CO2 as a precursor in manufacturing chemicals. No exact completion date or budget has been disclosed.
The move is a serious declaration of intent from the Indian cement producer towards its aim of becoming carbon neutral by 2040. Dalmia has been pushing its sustainability ‘journey’ for several years now hitting targets such as reaching 6Mt of alternative raw materials usage in its 2018 financial year and reaching a clinker factor of 63% at the same time. In an article in the November 2018 issue of Global Cement Magazine it said it had achieved CO2 emissions of 526kg/t from its cement production compared to 578kg/t from other Indian members of the Cement Sustainability Initiative (CSI). In its eastern operations it had gone further to reach 400kg/t.
Using CCU is the next step to this progression but Dalmia’s approach is not without its caveats. Firstly, despite the size of the proposed project it is still being described as a ‘large-scale demonstration.’ Secondly, the destination of all that captured CO2, as mentioned above, is still being considered. CCSL uses a post-combustion capture method that captures flue gas CO2 and then combines the use of a proprietary solvent with a heat integration step. Where the capture CO2 goes is vital because if it can’t be sold or utilised in some other way then it needs to be stored, putting up the price. Technology provider CCSL reckons that its CDRMax process has a CO2 capture price tag of US$40/t but it is unclear whether this includes utilisation sales of CO2 or not.
The process is along similar lines to the Skyonic SkyMine (see Global Cement Magazine, May 2015) CCU that was completed in 2015 at the Capitol Cement plant in San Antonio, Texas in the US. However, that post-combustion capture project was aiming for 75,000t/yr of CO2. Dalmia and CCSL’s attempt is six times greater.
Meanwhile, Cembureau, the European cement association, joined a group of industrial organisations in lobbying the European Union (EU) on the Horizon Europe programme. It wants the budget to be raised to at least Euro120m with at least 60% to be dedicated to the ‘Global Challenges and European Industrial Competitiveness’ pillar. This is relevant in a discussion on industrial CO2 emissions reduction because the scheme has been supporting various European cement industry projects, including HeidelbergCement’s work with the Low Emissions Intensity Lime And Cement (LEILAC) consortium and Calix at its Lixhe plant in Belgium and its pilots in Norway. As these projects and others reach industrial scale testing they need this money.
These recent developments provide hope for the future of the cement industry. Producers and their associations are engaging with the climate change agenda and taking action. Legislators and governments need to work with the cement sector to speed up this process and ensure that the industry is able to cut its CO2 emissions while continuing to manufacture the materials necessary to build things. Projects like this latest from Dalmia Cement are overdue, but are very encouraging.
Aggregate Industries, Innovatium and the University of Birmingham work on liquid air energy storage system
05 February 2019UK: A consortium comprising Aggregate Industries, Innovatium and the University of Birmingham has gained funding from the Department for Business, Energy and Industrial Strategy (BEIS) to test a liquid air energy storage (LAES) energy efficiency technology under the government’s Industrial Energy Efficiency Accelerator (IEEA) programme. The IEEA programme, administered by the Carbon Trust on behalf of BEIS, will provide nearly Euro0.4m towards delivering a new compressed air system utilising LAES technology from initial laboratory testing to full operation at Aggregate Industries’ Bardon Hill quarry in Leicestershire.
PRISMA (Peak Reduction by Integrated Storage and Management of Air) by Innovatium is a LAES technology that stores energy in liquid air form to provide compressed air, allowing inefficient partially loaded, variable-demand compressors to be turned off, thus improving the total system efficiency by up to 57%. The PRISMA system will bring together a latent energy cold storage tank, filled with a phase change material (PCM) to store thermal energy, and a number of other off-the-shelf components to form a system that will work with Aggregate Industries’ existing compressed air network. The research group says that the integration of the equipment and components in an industrial setting, for the provision of compressed air, has never been attempted before.
“The project will help to address the ‘energy trilemma’ of managing energy efficiency, energy cost and energy security by: significantly improving the energy efficiency of our compressed air system; managing electricity costs by running the compressors out-of-hours, when electricity is cheaper; and helping to smooth and reduce the peak electrical demand on site. We are therefore very excited to be the first industrial partner to install the PRISMA system at our Bardon Hill quarry in Leicestershire,” said Richard Eaton, Energy Manager at Aggregate Industries.
The 24-month project will involve the development of the PCM at the University of Birmingham’s School of Chemical Engineering as well as the design, manufacture and assembly of multiple system components by Innovatium before installation of the system at Bardon Hill. The PRISMA Project has currently only been deployed in a simulated environment. Following successful delivery of the project, this scalable technology has multi-sectoral applications for compressed air systems both in the UK and globally. In the UK, the compressed air market is estimated at 1.3GW of installed electrical capacity across around 4500 sites and over 55,000 individual compressor units.
Largest Nepalese plant secures US$140m commercial loan
05 September 2018Nepal: A consortium of Nepal’s five commercial banks has approved credit worth US$140.5m to Hongshi Shivam Cement Private Limited, a Nepal-China joint venture company, in one of the largest ever finance pledges by Nepali commercial banks to any industry or infrastructure project. Company officials said that they would use the loan pledged by the commercial banks to start commercial production of cement at Hongshi Shivam’s 6000t/day plant.
The consortium led by Nepal’s NMB Bank, co-led by Nepal Investment Bank and participated in by Prabhu Bank, Everest Bank and Nepal SBI Bank, pledged the loan to the cement company, which has been conducting trial production of cement since May 2018.
The joint venture said that the loan was sought from Nepali banks to conclude financial closure of the cement plant. It has already received approval to inject Foreign Direct Investment (FDI) worth US$86m from Investment Board of Nepal and the central bank. The Chinese joint-venture partner has pledged to inject total FDI of US$360m, making it the largest FDI ever in the country’s cement industry.
Germany: SKF has inaugurated its new Sven Wingquist Test Centre in Schweinfurt. The unit had an investment of Euro40m. SKF says that the centre is the first in the world that is able to test large-size bearings under actual operating conditions.
The Sven Wingquist Test Centre has two testing rigs. One rig will be used for testing bearings used in other industrial sectors, including mining, construction, steel manufacturing and marine transport. The other is designed for the testing of wind turbine main shaft arrangements. Combined with SKF’s diagnostics, condition monitoring and simulation methods, these rigs are intended to help reduce testing and product development lead-times and provide more information into bearing performance.
The test centre has received funding from the Bavarian Ministry of Economic Affairs, Media, Energy and Technology and the German Federal Ministry for the Environment, Nature Conservation, Construction and Reactor Safety.
Funding released for PPC to build new line at Slurry plant
19 January 2017South Africa: PPC has completed the components of its 2008 broad-based black economic empowerment (B-BBEE) transaction, releasing US$74m in funding in mid-December 2016. Strategic black partners and community service groups subscribed for 15.6 million shares as part of earlier agreements. The funding will be used to reduce company debts and pay for a new production line at its Slurry cement plant in Lichtenburg.
Sagar Cements to raise funds for upgrades
13 October 2016India: Sagar Cements is planning to raise funds to finance expansion of its cement grinding plant at Vizag in Andhra Pradesh as well as to set up a coal-fired power plant at its plant at Nalgonda in Telangana. A directors board meeting has been scheduled on 19 October 2016 to discuss proposals for the financing.
US: St. Marys Cement’s has received inducement resolution approval from the Michigan Strategic Fund (MSF) for up to US$150m in private activity bonds to expand its Charlevoix plant in Michigan. The cement producer will now submit a more detailed plan to the MSF.
“This is great news for St Marys, its employees and customers,” said Senator Wayne Schmidt. “Not only will this project help the company to grow its Charlevoix plant and expand its capabilities to better serve customers, but it will also create new jobs in the community.”
According to MSF, the plant upgrade will expand the plant’s infrastructure to increase productivity. The project is expected to qualify for bond financing as a solid waste disposal and recycling facility. The company currently employs 232 people, and the expansion project is expected to add up to 200 jobs during construction and up to 10 permanent jobs upon completion.
Private activity bonds are a source of financial assistance to economic development projects in the state. They provide profitable firms with capital cost savings stemming from the difference between taxable and tax-exempt interest rates. A bond inducement is the first step in a bond transaction.
LEILAC secures Euro12m from European Union to demonstrate Calix carbon capture technology
21 April 2016Europe: The Low Emissions Intensity Lime And Cement (LEILAC) consortium has secured Euro12m in funding over five years from the European Commission Horizon 2020 Grant programme to test Calix’s direct separation process to capture CO2 emissions from cement and lime production. The consortium comprises HeidelbergCement, Cemex, Tarmac, Lhoist, Amec Foster Wheeler, ECN, Imperial College, PSE, Quantis and the Carbon Trust. The consortium will also contribute a further Euro9m towards the project.
During the first three years, the project will focus on finalising the design of the demonstration plant, to be constructed at the HeidelbergCement plant in Lixhe, Belgium once the necessary permits have been secured. The high temperature Direct Separation Calciner pilot unit will then undergo two years of testing in a standard operational environment, at a feed rate capacity of 240t/day of cement raw meal and 200t/day ground limestone respectively, on a continuous basis for several weeks.
Fundamental research on the process demands and performance will be carried out to demonstrate that the technology works sufficiently and robustly enough to be scaled up to full operational use. The project results will be shared widely with industry at key intervals during the testing.
Calix’s direct separation technology is achieved by re-engineering the process flows used in the best available technology for lime and cement calcination. Carbonate calcination occurs by indirect counterflow heating, and consequentially the flue gases are not mixed with the CO2 emitted from the carbonate minerals. This technology is already operating at a commercial scale for magnesite calcination. It does not require any separation technologies, new materials or processes. The technology is complementary with other carbon capture methods already developed in the power and cement sector, such as oxyfuel, and can make use of alternative fuels.