Cement Energy Environment

11 What is missing, however, is the infrastructure required to transport the carbon dioxide and an approval framework covering how it can be reused or stored. In the view of VDMA Construction - Equipment and Plant Engineering, it is conducive to promote the standardization of alternative cements, as well as the Alongside the possibilities for separating and reusing CO 2 , there are also ways to prevent it from being generated in the first place. Various non-fossil fuels are options here, including biomass such as wood chips, rice husks, sewage sludge or refuse-derived fuel (RDF). In order to ensure that the clinker is of a sufficient quality, cement manufacturers must keep the temperature of the kiln at a constant level. They do this by feeding the fuels at an even rate. Although alternatives are cheaper, they are more difficult to dose as they can vary significantly in terms of their composition, shape and size – even when using the same type. Powders, flakes and fibres have a complicated discharge behaviour and a low bulk density, and are difficult to feed into the combustion process evenly. Some of them are unhygienic or explosive, presenting an additional challenge. With its rotor weighfeeders, FLSmidth Pfister in Augsburg offers solutions for plant operators that wish to switch their production to alternative fuels with a minimum of effort and expense. The system is closed from the silo to the kiln and is designed in such a way that it is resistant to pressure surges. The patented rotor weighfeeders utilise the functional principle of horizontally positioned, gravimetric rotary valve feeders (DRW, URW, SRW) for pulverised secondary fuels, A key technology in this scenario is power-to-X, with which both synthetic gas and liquid fuels can be manufactured. Alternative energy sources can be used as seasonal storage in electricity or transport applications, such as in heavy-duty transport or in shipping and aviation. One significant benefit is that the infrastructure which is in place to transport and fill fossil fuels can continue to be used for the synthetic gases and fuels. As research projects have shown, these synthetic fuels can also be admixed to fossil fuels in almost any ratio, thus contributing to the quick reduction of greenhouse gases. Alternative fuels What to do with the CO 2 ? or rotors designed for fibrous, flaky, pelletised and fragmented secondary fuels (TRW). The simple and closed design enables direct silo discharge, weighing, dosing and direct feeding of the bulk material using a single device.³ As a general rule, it is prudent for cement manufacturers to use fuels that are available in their local area. This reduces the CO 2 emissions produced when transporting the material. Cementos Molins is a cement manufacturer in Sant Vicenç dels Horts near Barcelona. The company operates a kiln around the clock, which is fired using a main burner and a precalciner. Both are fed with petroleum coke and around 40 percent alternative fuels. The company uses various FLSmidth Pfister rotor weighfeeders in order to gravimetrically dose solid fuels continuously. Three different dosing stations were installed between 2011 and 2014. The patented predictive dosing control (ProsCon) feeds the fuels precisely and controls the burning process in a stable manner, resulting in lower CO 2 emissions while at the same time saving costs. Another advantage is that a single system can be used for all fuels. The company is planning to use more alternative fuels in the future. VDMA views power-to-X as a guarantor of the energy transition. As CO 2 is required to convert hydrogen into alternative energy sources, cement plants could therefore contribute to the reliable and permanent generation of energy. https://p2x4a.vdma.org/viewer/-/v2article/ render/29977950 approach of the BMU of developing a sales market for cements produced using greenhouse gas-neutral procedures. It is, however, necessary to create an approval framework quickly, and therefore also the requisite infrastructure for transporting and reusing the separated CO 2 .