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News NOx

Displaying items by tag: NOx

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New EPA nitrous oxide limits to cost US industry US$1.1bn by 2026

21 March 2022

US: New industrial nitrous oxide (NOx) emissions limits under the Environmental Protection Agency (EPA)’s proposed Good Neighbour Plan will cost US$1.1bn by 2026, according to the National Association of Manufacturers. US Political and Economic Organizations News has reported that the association claims that the cost of implementing the regulations may harm US manufacturing and the country’s economy.

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Cementos Molins targets 20% CO2 emissions reduction by 2030

16 February 2022

Spain: Cementos Molins has committed to a 20% reduction in its CO2 emissions between 2020 and 2030. The company has set out its strategy in its 2030 Sustainability Roadmap. The roadmap covers five areas: health and safety, energy and climate change, the circular economy, nature and the environment, and corporate social responsibility. Thus, Cementos Molins aims to achieve an accident-free workplace, to source 55% of its electricity consumption renewably, to increase its alternative fuel (AF) substitution rate to 40% and reduce its cement’s clinker factor to 68%, to halve particulate matter emissions and cut nitrous oxides (NOx) and sulphur oxides (SOx) emissions by 40% and 10% respectively and to have signed official agreements with all host communities and employ women in over 23% of management positions.

Chief executive officer Julio Rodríguez said “Sustainability is the cornerstone of our strategy here at Cementos Molins, and today we are delighted to announce the specific targets that we have set out in our 2030 Sustainability Roadmap. The targets and their corresponding action plans - the result of the hard work and dedication of the Cementos Molins team, together with our stakeholders – will help drive our company forward in actively tackling climate change.” He added “We are deeply committed to achieving zero emissions and building a better world for everyone.”

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FLSmidth to supply 11,500t/day kiln line for Shree Cement’s upcoming Nawalgarh cement plant

12 October 2021

India: Shree Cement has hired FLSmidth to supply a 11,5000t/day kiln line for its planned Nawalgarh, Rajasthan, cement plant. The line will consist of a six-stage preheater and a three-support kiln. The supplier will also deliver an OK vertical roller mill, which it says has a 5 – 10% lower energy consumption than a standard vertical roller mill. The project focuses on sustainable productivity and emissions control. Shree Cement has opted for JetFlex burners to give the lowest possible nitrous oxide emissions for various fuel types.

Shree Cement managing director Prashant Bangur said “Based on the experience of working with FLSmidth on the installation of a 9,000t/day pyro system at the Raipur, Chhattisgarh, cement plant earlier this year, we felt confident about approaching Carsten Riisberg Lund and his team regarding the Rajasthan project.” He added “Being recognised as a Sustainability Champion by the World Economic Forum is a testament of our emphasis on sustainability at every stage of our operations. The new line will push that agenda even further in terms of lowering the benchmarks on energy consumption and emissions, and thereby reducing our environmental footprint.”

FLSmidth also supplied a second OK mill for Shree Cement’s operations in Kolkata, West Bengal.

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China Tianrui Group publishes sustainability report for 2019

03 August 2020

China: China Tianrui Group has reported gross CO2 emissions per tonne of cement of 910kg/t in 2019 in its latest sustainability report. Nitrogen oxide and particulate matter emissions were 7862t and 1380t, year-on-year decreases of 13% and 4% respectively. Its water consumption intensity decreased by 42% year-on-year to 1.12Mm3.

The group operates 20 clinker production lines and 59 cement grinding production lines. Its production capacity of clinker and cement was 28.4Mt tonnes and 56.7Mt respectively in 2019. Its plants are based in Henan, Liaoning, Anhui and Tianjin, with Henan and Liaoning accounting for the largest proportion.

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Henan Province to raise utility costs for polluting cement producers

09 July 2020

China: Henan Province has announced a planned rise in water and energy tariffs for cement producers that fail to meet current emissions standards and clean transportation requirements. Reuters News has reported that companies subject to the measures will pay US$0.07 – US$0.14/m3 more for water and up to US$0.01/kWh more for electricity. Henan enacted ‘ultra-low’ emissions limits of 10Mg/Nm3 of dust, 50Mg/Nm3 of NOx and 100Mg/Nm3 of SO2 in 2018. Cement plants in the province produce 105Mt/yr of cement.

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Cement producers agree on NOx emissions reduction in South Korea

11 June 2020

South Korea: All nine domestic cement producers and the Ministry of Environment have agreed on measures to reduce NOx emissions. Asia Cement, Halla Cement, Hanil Cement Manufacturing, Hyundai Cement, Korea Cement, Sampyo Cement, Ssangyong Cement Industrial, SungShin Cement and Union Corporation have agreed to invest in upgrades to filters or new high-efficiency filters and process improvements, according to the Korea Times newspaper. There was also an agreement to set NOx emissions reduction targets for the allocation of funding. The Korea Environmental Industry Technology Institute is investing US$2.93m in research towards developing methods of selective catalytic NOx emissions reduction and selective non-catalytic NOx emissions reduction.

The government aims to reduce national NOx emissions by 20% to 155,000t/yr from 195,000t/yr through subsidies to emissions reduction technologies development and uptake. The cement sector presently emits 62,500t, 32% of the domestic total.

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Asia Cement orders kiln upgrade from KHD

14 February 2020

South Korea: Asia Cement has awarded a contract to Germany’s Humboldt Wedag, a subsidiary of KHD Humboldt Wedag International, to supply and provide engineering for the modernisation of its third clinker production line at its Jecheon plant. The target of the upgrade project is to increase the alternative fuel substitution rate to above 85% of calciner fuel, as well as the reduction of NOx to satisfy local emission limits.

KHD’s scope includes the engineering and supply of mechanical equipment for the clinker production as well as electrical equipment for the overall modernisation of the production process. During the project, the existing preheater will be modernised with the installation of a new Pyroclon R calciner, as well as a Pyrorotor rotary combustion reactor for low-processed alternative fuel.

The overall project scope consists of: a Pyroclon R calciner with Pyrotop mixing chamber; a Pyrorotor alternative fuel combustion reactor; a Pyrobox coal firing system for process start-up and operation balancing; replacement of stage five cyclones with new high-efficiency cyclones for calciner connection and an overall pressure drop reduction; bypass mixing chamber installation; and a new kiln inlet chamber with orifice.

The commissioning of the modernised production line is planned for the first quarter of 2021.

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Lehigh Cement and Lehigh White Cement to invest US$12m in pollution control technology

04 December 2019

US: Lehigh Cement and Lehigh White Cement have agreed to an investment of US$12m for the installation of pollution control technology across their 11 active cement plants. US Fed News has reported that the upgrades can be expected to reduce net emissions of nitrous oxised (NOx) by 4550t/yr and sulphur dioxide (SO2) by 989t/yr. Lehigh Cement will additionally pay a US$1.3m civil penalty for past Clean Air Act violations.

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HeidelbergCement’s specific CO2 emissions continue to fall in 2018

24 July 2019

Germany: HeidelbergCement’s specific CO2 net emissions per tonne of cementitious material fell by 1.4% year-on-year to 599kg CO2/t in 2018 from 608kg CO2/t in 2017. Despite this its absolute gross CO2 emissions increased by 3% to 76.7Mt from 74.2Mt as clinker, cement, aggregate and concrete sales volumes all grew in 2018. The group has published the data in its Sustainability Report for the 2018 financial year.

“Cutting our CO2 emissions and handling natural resources considerately are priorities for all our business lines,” says Bernd Scheifele, chairman of the managing board of HeidelbergCement. "We focus primarily on the development of sustainable products and the implementation of concrete measures at plant level in order to achieve our sustainability goals.” The company has set itself the target of a 30% reduction in its specific net CO2 emissions per tonne of cement by 2030, compared with 1990. HeidelbergCement says it intends to realise its vision of CO2-neutral concrete by 2050 at the latest.

Other figures of note in the report include an alternative fuels substitution rate of 21.7% in 2018 compared in 20.8% in 2017. NOx, SOx and particulate matter emissions all fell. However, total water withdrawal rose by 8% to 65.4Mm3 from 60.4Mm3 although water consumption fell.

Published in Global Cement News
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Irish Cement plant in Limerick granted local exception to European NOx emissions

15 July 2019

Ireland: Local environmental activists have accused the Irish Environmental Protection Agency (EPA) of ignoring European Union (EU) NOx emission limits by granting an exemption to Irish Cement’s Limerick integrated plant. Limerick Against Pollution group alleges that the plant has been allowed a limit of 800mg/m3 despite a EU directive reducing the limit to 500mg/m3, according to the Limerick Post newspaper.

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