Displaying items by tag: WHR

India: Mangalam Cement has completed the installation of a 5.15MW WHR plant at its 1.0Mt/yr Morak cement plant in Adityanagar, Rajasthan. Accord Fintech newspaper has reported that a further 5.85MW expansion to the power plant will be commissioned in early 2020.

India: The state government of Maharashtra has granted Aditya Birla Group subsidiary UltraTech Cement environmental clearance for a planned 16MW waste heat recovery (WHR) generator at its 3.6Mt/yr integrated Awarpur plant in Chandrapur district. Projects Today has reported that the state’s Environmental Impact Assessment Authority has also cleared the company’s plan to expand its Korpana coal-fired power plant in Chandrapur to 15MW from 10MW. The producer will place orders for construction contracts in February 2020.

Oman: Alsahawa Cement Company (ACC), the newly-founded Oman Cement Company (OCC) subsidiary, will operate the group’s upcoming Duqm cement plant, for which an engineering, procurement and construction (EPC) contract tender has been issued. Bidding is due to close on 27 February 2020.

The new facility will include a coal-fired power plant and waste heat recovery (WHR) power plant. OCC Chief Executive Officer Salim Abdullah Al Hajiri described the commissioning of the 1.7Mt/yr integrated plant as a ‘reverse integration’ process, whereby the plant will initially grind clinker produced at other OCC cement plants beginning in September 2021 before upgrading to fully integrated cement production in March 2022.

India: Deccan Cements has shared plans to expand its Suryapet waste heat recovery (WHR) power plant in Telangana to 33MW from 18MW. Domex Power Genration Projects has reported that the cost of the development will be US$84.5m and it will take 24 months to complete once statutory clearance is received.

Uzbekistan: Russia’s Eurocement has revealed that construction work underway at its 2.0Mt/yr integrated Akhangarancement cement plant in Tahskent region includes the installation of a second plant on the site, bringing its total capacity to 5.0Mt/yr. Trend News Agency has reported that suppliers have delivered 4500t of machinery to Akhangarancement, including a clinker refrigerator, clinker conveyor and heat exchanger as well as electrical equipment and building materials for a raw materials warehouse. Eurocement’s total investment in the project has amounted to US$200m.

Eurocement Group Holding International president Mikhail Skorohod said, “Taking into account the growing needs of the Uzbek market in building materials, Eurocement is committed to creation of a building materials cluster based around the Akhangarancement plant.” The company said that the upgraded 5.0Mt/yr plant would become operational in 2020.

India: UltraTech Cement has announced a planned expansion of its Bhogasamundram waste heat recovery (WHR) power plant to 36MW from 20MW. The plant serves its 5.6Mt/yr integrated Andhra Pradesh cement plant. The upgrade is part of an investment of US$14.0m which will also serve to expand the area of the cement plant by 326 hectares.

Japan: Taiheyo Cement’s 1.4Mt/yr integrated Saitama cement plant is to receive a 53,000MWh/yr waste heat recovery (WHR) unit. The company says that the installation, which will become operational in September 2022, will reduce carbon dioxide (CO₂) emissions by roughly 27,000t/yr.

The power cuts in northern and eastern India this week will have presented citizens with a situation very familiar to Indian cement producers. With over half the country reported to be without electrical power after three power grids collapsed, industrial users are likely to have been shut down as the authorities try to bring back domestic supplies.

According to figures from the National Council for Cement and Building Materials, Indian cement producers used 79kWh/t of electrical energy in 2009 as production hit 181Mt. The Cement Manufacturers' Association placed these figures at 68-93kWh/t for a modern plant and 100-120kWh/t for older ones. In June 2012 the Central Electrical Authority reported the country's entire installed electrical capacity was 205GW.

It's difficult to estimate how much damage problems in power supply may have caused the Indian cement industry over the last few decades in either reduced volumes or increased running costs. The Cement Sustainability Initiative and European Cement Research Academy broke down the share of electrical power in a dry process plant as follows: 38% for cement grinding, 24% for raw material grinding, 22% for clinker production including grinding of solid fuels, 6% for raw material homogenisation, 5% for raw material extraction and blending and 5% for conveying, packing and loading. Generally speaking, interruption of power causes production losses and low capacity utilisation, idle running of equipment during stops and restarts of the plant, thermal losses during reheating, damage to refractory and other problems such as slowing down the train network.

Subsequently there has been a drive in India towards captive power generation and waste heat recovery (WHR) mechanisms, especially as input energy costs have risen. For example it has been reported that ACC's average cost of electricity per kWh from its captive plants is US$0.067 versus US$0.087 for grid power. Companies like Shree Cement have since gone into the electricity export market with their surpluses and, as shown by SP Ganeshan at the Global CemPower Conference in June 2012, interest in WHR is booming. Currently, the Indian cement industry has about 4000MW of installed captive generation capacity, including coal-based plants, diesel generating sets and wind turbines. Through various greenfield and brownfield expansion projects it is anticipated that another 2000MW of captive capacity will be added by 2016.

One sign of how well the Indian cement industry is coping with its energy requirements is the 74% rise in fourth quarter profit reported by Shree Cement in May 2012, in part due to savings made from captive power generation. Perhaps they could advise the Indian electricity board.

The Global CemPower conference took place last week in London, attracting 103 delegates from 25 countries. The conference looked at waste heat recovery options in the global cement industry. 'Back-of-the-envelope' calculations suggest that the value of the waste heat recovery units that could be installed in the global cement industry in the next ten years might total US$50bn - well worth thinking about.

Robert McCaffrey, the conference convenor, gave a listing at the event of the seven megatrends that will shape the future of the global cement industry, including demographic trends (aging of both developing and developed nations), urbanisation (with 70-75% of humanity due to live in cities by 2050), the growth of new country superpowers, the possibility of further climate change, paradigm shifts in the cement industry business model, ever-increasing energy costs and the influence of Rumsfeldian known-unknowns and unknown-unknowns.

Whatever else happens in the next 50 years, increased energy costs and energy efficiency will be the order of the day. In the global cement industry, waste heat recovery is here to stay.

Presentations, videos and a full review of the Global CemPower conference are available here, www.globalcement.com/conferences/global-cempower/introduction.