Displaying items by tag: drones

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

Switzerland: LafargeHolcim has launched a four-year industrial automation plan called ‘Plants of Tomorrow.’ It includes Industry 4.0 concepts such as automation technologies and robotics, artificial intelligence, predictive maintenance and digital twin technologies for its entire production process. The plan is expected to show 15 – 20% operational efficiency gains. It also claims that the initiative is, “one of the largest roll-outs of Industry 4.0 technologies in the building materials industry.”

“Transforming the way we produce cement is one of the focus areas of our digitalisation strategy and the ‘Plants of Tomorrow’ initiative will turn Industry 4.0 into reality at our plants. These innovative solutions make cement production safer, more efficient and environmentally fit,” said Solomon Baumgartner Aviles, Global Head Cement Manufacturing.

The building materials company is presently working on more than 30 pilot projects covering all regions where the company is active. The company’s integrated cement plant at Siggenthal in Switzerland will be a trial site where the integration of all relevant modules will be tested.

One examples of where LafargeHolcim has started the plan include a partnership with Swiss start-up Flyability to use drones to increase the frequency of inspections at plants while simultaneously reducing cost and increasing safety for employees by inspecting confined spaces. The concept is being rolled out to several markets, including Switzerland, France, Germany, the UK, the US, Canada, India and Russia. It is also using a subsidiary, Maqer, to identify technology startups with promising technology. It aims to harness the potential of this through new partnership models with both manufacturing and software companies.

LafargeHolcim has already launched technology to track performance centrally and allocated resources to support the plant network in real time. More than 80% of LafargeHolcim’s cement plants are already connected to its Technical Information System that provides data transparency at plant, country, regional and global level. Some country operations have more than a decade of historic technical data available. Other systems allow the remote control of certain parts of the operations through online condition monitoring systems. Since its implementation in 2006, this system has saved over Euro70m and an additional 3Mt of cement sold through fewer breakdowns.