Displaying items by tag: Solid Recovered Fuel

France: Germany-based ThyssenKrupp has won a contract for the installation of a new 4000t/day clinker line at Ciments Calcia’s Airvault cement plant in Poitou-Charentes. The supplier expects the new line to double the plant’s clinker capacity while also reducing its CO2 emissions. It is intended to replace the two existing lines at the site.

ThyssenKrupp will supply a 1200t/hr double-shaft hammer crusher, a longitudinal blending bed, a 370t/hr Quadropol QMR² 45/23 type vertical roller mill and a 10,000t tangential blending silo to process raw materials for the line. A single-string, five-stage Dopol type cyclone preheater with integral calciner will be supplied that is suitable to use with alternative fuels, with the possibility of conversion to oxyfuel in future. ThyssenKrupp plans to preassemble the preheater, reducing anticipated construction time ‘by several months.’ The plant also includes a Polytrack clinker cooler, a solid recovered fuel (SRF) preparation line and dedusting systems. Commissioning is scheduled for mid-2024.

No value for the project has been disclosed by Ciments Calcia or ThyssenKrupp. However, Ciments Calcia previously announced a proposed investment of Euro300m in January 2021.

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.

Last week’s Global CemFuels Conference in Barcelona raised a considerable amount of information about the state of the alternative fuels market for the cement industry and recent technical advances. One particular facet that stuck out were reports from cement and waste producers, from their perspective, about Morocco’s decision to ban imports of waste from Italy in mid-2016. The debacle raises prickly questions about how decisive attempts to reduce carbon emissions can be.

Public outcry broke out in Morocco in July 2016 over imports of refuse derived fuel (RDF) imported from Italy for use at a cement plant in the country. At the time a ship carrying 2500t of RDF was stopped at the Jorf Lasfar port. Local media and activists presented the shipment in terms of a dangerous waste, ‘too toxic’ for a European country, which was being dumped on a developing one. Public outcry followed and despite attempts to calm the situation the government soon banned imports of ‘waste’.

What wasn’t much reported at the time was that RDF usage rates in Europe have been rising in recent years and that the product is viewed as a commodity. As Michele Graffigna from HeidelbergCement explained at the conference in his presentation, its subsidiary Italcementi runs seven cement plants in Italy but only two of them have the permits to use alternative fuels like RDF. Italy also has amongst the lowest rates of alternative fuels usage in Europe, in part due to issues with legislation. This is changing slowly but the company has an export strategy for waste fuels from the country at the moment. Italy’s largest cement producer wants to use waste fuels in Italy but it can’t fully, so it is exporting them so it (and others) is exporting them to countries where it can.

In the Waste Hierarchy, using waste as energy fits in the ‘other recovery’ section near the bottom of the inverted pyramid, but it is still preferable to disposal. Waste fuels may be smelly, unsightly and have other concerns but they are a better environmental option than burning fossil fuels. HeidelbergCement engaged locally with media and local authorities to try and convey this. It also arranged visits to RDF production sites in Italy and German cement plant that use RDF to present its message. Looking to the future, HeidelbergCement now plans to focus on local waste production in Morocco with projects for a tyre shredder at a cement plant and an RDF production site at a Marrakesh landfill site in the pipeline. Graffigna didn’t say so directly, but the decision to focus on local waste supplies clearly dispenses with historical and cultural baggage of moving ‘dirty’ products between countries.

In another talk, at the conference Andy Hill of Suez then mentioned the Morocco situation from his company’s angle. His point was that moving waste fuels around can carry risks and that a waste management company, like Suez, knows how to handle them. It is worth pointing out here that Suez UK has supplied solid recovered fuel (SRF) to the country so it has a commercial interest here. He also suggested that despatching a bulk vessel of waste to a sensitive market did not help the situation and that it heightened negative publicity.

Morocco’s decision to ban the import of waste fuels in mid-2016 is an unfortunate speed bump along the highway to a more sustainable cement industry. It raises all sorts of issues about public perceptions of environmental efforts to clean up the cement industry and where they clash with commercially minded attempts to do so by the cement producers. A similar battle is playing out in Ireland between locals in Limerick and Irish Cement, as it tries to start burning tyres and RDF. These are not new issues. Meanwhile in the background the amendment to the European Union Emissions Trading Scheme draws close with a vote set for mid-February 2017. It could have implications for all of this depending on what happens. More on this later in the month.