Displaying items by tag: Waste Heat Recovery

India: The total new waste heat recovery (WHR) unit capacity of cement producers is expected to reach 175MW in the two years ending on 31 March 2022. Rating agency ICRA has valued the total investment in new WHR units over the period as up to US$230m, according to the Press Trust of India. A market report by ICRA reports that power generation using WHR costs around US$0.02/kWh compared to US$0.7/kWh from a captive coal power plant. Cement companies that replace 25% of total power capacity with WHR can potentially save around 15% from existing power costs.

India: Holcim subsidiary Ambuja Cements has launched trial production at its new 3.0Mt/yr Marwar integrated cement plant in Rajasthan’s Nagaur district. The launch follows a total investment of US$316m in the plant’s construction. The plant is equipped with an additional 2.0Mt/yr of grinding of grinding capacity and a waste heat recovery (WHR) plant.

Managing director and chief executive officer Neeraj Akhoury said “It’s a proud moment for us at Ambuja Cements. Our endeavour shall always be to become a strong partner and a builder of progress for India."

There has been a significant investment in the South Korean cement industry this week with the news that Hanil Hyundai Cement has ordered a steam-based waste heat recovery (WHR) system from Japan-based Kawasaki Heavy Industries. The 22.6MW system will be used on two of the production lines at the Yeongwol plant in Gangwon Province. The supplier says that installation is expected to generate about 30% of the energy the plant needs and save around 10,000t/yr of CO₂ in the process. Delivery is scheduled for late 2022.

This order may be the first investment following the announcement in late June 2021 that the state-owned Korea Development Bank had pledged around US$870m towards supporting the cement sector in making carbon reduction upgrades by 2025. These are intended to include moving away from burning fossil fuels in cement production and increasing the use of recycling materials. At the time of the agreement between the bank and the Korea Cement Association (KCA), Hanil Hyundai Cement noted that the local alternative fuels substitution rate was 24% compared to 46% in the European Union and 68% in Germany.

Graph 1: Cement production in South Korea, 2010 – 2020. Source: Korea Cement Association

By European or American standards South Korea kept its coronavirus cases under control in 2020. A robust testing and contract tracing regime (K-Quarantine) managed to prevent the country enforcing stricter measures until late in 2020. A fourth wave of infections, currently underway in July 2021, due to the more contagious Delta variant, has started to change this. Despite being able to keep its economy open though, the construction sector still took a hit although not as bad as initially feared.

Cement production fell by 6% year-on-year to 47.5Mt in 2020 from 50.6Mt in 2019 following a downward trend since 2017. The KCA expected worse after a poor third quarter in 2020 when it was preparing for shipments to fall below the level last seen in the midst of the International Monetary Fund (IMF) crisis in the late 1990s. On top of this the industry was also potentially facing a new tax on production towards the end of 2020. One large local producer, Ssangyong C&E, reported a 5% year-on-year drop in sales to US$864m in 2020 from US$910m in 2019. However, it managed to increase its operating profit over the same period. So far in 2021 the sector faced supply shortages in the spring. The KSA blamed the winter plant maintenance schedule and a lack of railway wagons and trucks.

The timing of the Korea Development Bank investment in the cement sector is interesting given the movement on the European Union carbon border adjustment mechanism. Cement exports seem unlikely to be affected but business lobbyists like the Federation of Korean Industries are well aware of the effects schemes like this might have upon commodities like steel and aluminium in the first phase and then the implications for car production later on. Target markets for cement exports such as the US, Peru, Chile and the Philippines might all become vulnerable should carbon-based trade restrictions become more prevalent. Of course export markets remain vulnerable to more usual hindrances. For example, in March 2021 the Philippines extended its safeguard measures on cement imports to various countries including South Korea.

Following a round of market consolidation in the late 2010s, the South Korean cement sector now appears to be entering a phase of sustainable realignment. In late May 2021 Prime Minister Moon Jae-in announced plans to hasten the country’s carbon reduction targets ahead of the United Nations Climate Change Conference scheduled for November 2021, including a carbon tax. With cement production on a downward trend since 2017 and the coronavirus crisis far from gone it will be instructive to see how far the intervention of the Korea Development Bank will go.

South Korea: Hanil Hyundai Cement has placed an order with Japan-based Kawasaki Heavy Industries for the design and installation of a 22.6MW waste heat recovery (WHR) unit at its Yeongwol cement plant in Gangwon. The WHR plant will generate power from heat from two of the plant’s production lines when commissioned in December 2022. The supplier says that it will serve 30% of the plant’s energy needs. Kawasaki Heavy Industries says it has previously supplied WHR units to Japan, Germany, South Korea, Turkey, China, Vietnam, India, Pakistan and elsewhere.

Portugal: Semapa subsidiary Secil is spending Euro86m on modernising its Outão cement plant in Setúbal. The Dinheiro Vivo has reported that the work will turn the facility into ‘the most sustainable cement plant in Europe,’ according to the company. It will reduce CO₂ emissions by 20%, end fossil fuel use and establish waste heat recovery to supply 30% of the plant’s electrical power needs. The government has granted the ‘Project of National Interest’ Euro14.5m in funding. The project will also expand the cement plant’s capacity by 30% to 1.3Mt from 1.0Mt.

Chief executive officer Carlos Abreu said "We have the ambition of reaching carbon neutrality in 2050 and this project is a step in that direction. Others will follow." He added "The Asian and American blocs are not always facing that direction, but the path is made by walking... and we will get there." Regarding the timing of the project, Abreu said "Secil was a very brave company here. The project was decided in 2019 before the pandemic broke out... We kept it, despite the fact that knowing that the pandemic was going to be, and is being, very difficult, but we believe that we had no other alternative."

Czech Republic: Mexico-based Cemex plans to install a 2MW waste heat recovery (WHR) plant using supercritical CO₂ (sCO₂) at its Prachovice cement plant. The unit is intended to provide up to 8% of the plant’s electricity requirements.

The producer is part of a consortium studying new sCO₂ WHR systems. The EU Horizon 2020 Industrial Heat to Power fund awarded Euro14m in financial backing to the consortium. The project is intended to demonstrate a cheaper and more flexible method of waste heat valorisation compared to the steam or organic rankine cycle approaches conventionally used in WHR.

Plant director Karol Czubara said, “The new sCO₂ technology has a smaller footprint and higher operational flexibility than conventional power plant cycles, which produce power from turbines using water or steam.”

Pakistan: Bestway Cement has provided details of its upcoming 7200t/day-capacity Paikhel cement plant in Mianwali district, Punjab province. China-based Sinoma International Engineering Company will supply engineering, procurement and construction for the plant. The plant will have a 9MW waste heat recovery (WHR) plant.

India: Penna Cement has filed for an initial public offering (IPO) worth US$212m. It plans to offer US$34m-worth of shares for sale and to issue equity shares worth US$177m. United News of India has reported that part of the money raised will fund capital expenditure (capex) investments worth US$58m. The company’s plans consist of a second line at its Krishnapatnam grinding plant in Andhra Pradesh, an upgrade of raw materials and clinker grinding at its integrated Talaricheruvu plant in Andhra Pradesh, and new waste heat recovery (WHR) units at its Talaricherevu plant and its integrated Tandur plant in Telangana. It additionally plans to repay previous loans.

Switzerland: LafargeHolcim subsidiary Holcim Schweiz’s Eclépens cement plant generated 443,000kWh of energy via its waste heat recovery (WHR) plant in April 2021. The company said that the energy was enough to power 1000 households for the month. The figure brings the plant’s four-month 2021 total energy generation to over 1,000,000kWh. The producer said that the positive trend puts it on course to achieve its annual target of 4,000,000kWh in 2021.

Pakistan: Lucky Cement and China-based China Sinoma Energy Conservation have signed a deal to upgrade the waste heat recovery (WHR) units on both production lines at the integrated Pezu cement plant. When the project is completed it will increase the output to 14MW from 10MW at present. No value for the order has been disclosed. Sinoma supplied the plant’s original WHR units in 2017.