Cement Manufacturers Association (CMA)
47 based technologies. To choose the best suitable technology for a specific cement plant, technical and economic evaluation needs to be performed. Currently in India, there are no demonstration plants specifically for CO 2 capture in the cement industry, but Dalmia Cement (Bharat) in collaboration with Carbon Clean Solutions (CCSL) of the UK is the first to lead such an initiative by completing its feasibility study by Asian Development Bank (ADB). Only one successful installation of CCUS technology by CCSL in Tuticorin for a Chlor Alkali Plant for CO 2 capture and soda ash production. One of the promising CO 2 capture technologies is suitable for the cement industry and accesses the potential of the calcium looping cycle as a new route. It is based on the reversible carbonation. The potential advantage of the system is the very low efficiency retribution expected compared with other capture technology as the heat required for calcination is balanced by heat and release during carbonation how to capture step and can be utilise efficiently at high temperatures in the plant stream cycle. Since limestone is already used for cement manufacture and because it is cheap material with good geographical distribution it allows the use of local limestone resources with minimal investment. Another envisaged benefit of this new technology is that the line purged from the cycle could be used as a raw material to produce cement clinker. Therefore, the calcium looping cycle can potentially have an important impact on reducing CO 2 emissions from the cement industry. Though the conventional options for reducing CO 2 emissions for the cement industry many opportunities exist. Environment and energy are two sides of the same coin, when energy is reduced then the emission too is reduced along with economic benefits. In the cement industry the well-known preferred measures by which CO 2 emissions have been mitigated over the years like Energy efficiency improvement, Fuel switching by use of waste as an alternate fuel, increase of blended cement by reduction of clinker cement ratio using various industrial by-products, Waste heat recovery system, Use of renewable energy like solar & wind energy and other product variation like LC3, Composite cement, Belite cement, etc. All other activities have limitations in reducing CO 2 emissions but there is no market demand for various new products, which have bigger scope for reduction of CO 2 . Creating awareness amongst consumers for the popularisation of two types of cement consumption, Composite cement and LC3 will reduce CO 2 substantially. Even to decarbonise the cement sector CCUS technology is essential to reach net zero. However, the government of India in the last five years has taken proactive steps shown in Fig-7. The study report by NITI Aayog on Carbon Capture, Utilisation, and Storage Policy Framework describes different Deployment Mechanisms in India for major industrial sectors. The report explores the importance of Carbon Capture, Utilisation and Storage as an emission reduction strategy to achieve deep decarbonisation from hard-to-abate sectors including cement. The report also outlines broad-level policy intervention for its application. But CCUS requires additional thermal energy hence the symbiosis between the cement production process and its decarbonisation, is a herculean task. It is one of the challenging periods for the cement industry to decarbonise, by tackling the generation of CO 2 process emissions and the high demand for cement for infrastructural developmental projects in India. Every cement plant needs to study the full Life Cycle Assessment cradle- to-grave to identify hotspots for the whole process for environmental improvement and scope for bringing efficiency. However, on the way to a carbon-neutral future there is no
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