Site items in: Content by Author Kevin Rouwenhorst

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Ammonigy & Juwö Poroton: cracked ammonia fuel for brick manufacturing

Kevin Rouwenhorst November 27, 2025

In our November episode of Project Features, Juwö Poroton and Ammonigy joined us to explore their “CO₂-free brick production” project, demonstrating the use of cracked ammonia fuel to fire bricks in Wöllstein, Germany. Though hurdles remain for the deployment of the solution at the necessary scale, promising operational results and quality-checked final products were achieved, and progress is being made towards emissions mitigation.

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Status of renewable ammonia projects and technology licensors

Kevin Rouwenhorst November 18, 2025

One of the key steps in project development remains the selection of the licensor for the renewable ammonia synthesis loop. We explore different technology offerings from leading licensors – including KBR, Topsoe, Thyssenkrupp Uhde, Casale, Stamicarbon, and GoodChina – as well as the growing list of projects where they are being deployed.

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Complete supply chains: renewable ammonia production, transport, and export infrastructure in northern China

Kevin Rouwenhorst November 11, 2025

State-owned conglomerate Energy China and logistics and terminal specialist ADF are establishing a renewable ammonia supply chain in northeast China. In our recent episode of Project Features, we explored the Songyuan production project, and ADF’s planned scale-up of ammonia storage and transport facilities across China’s coast.

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LSB and Lapis: retrofitting CCS to existing ammonia production in the USA

Kevin Rouwenhorst October 13, 2025

In our September Episode of Project Features, project partner Lapis Carbon Solutions and LSB Industries walk us through their CCS ammonia project in El Dorado, Arkansas. Permitting is expected to be finalized next year, followed by commencement of CCS operations in late 2026.

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Renewable ammonia price discoveries: a closer look at the H2Global and SECI auctions

Kevin Rouwenhorst August 06, 2025

Various elements – different definitions for “green” hydrogen, subsidy structures, and transportation & logistics costs – all contribute to the gap between discovered prices for the H2Global and SECI renewable ammonia auctions. More SECI auction results are expected in the coming days and weeks.

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Gas-based reforming for low-emission ammonia production: ATR, POX, and two-step reforming

Kevin Rouwenhorst August 06, 2025

Current global ammonia production is mostly based on gas-fed, two-stage reforming processs. Decarbonization of this existing production capacity – as well as new newbuild low-emission capacity also based on gas – can utilize an industrially-proven suite of alternative technologies and processes, including autothermal reforming, and partial oxidation combined with CCS. This article discusses some of the technologies available from various tech providers, and reference projects in operation.

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Ammonia bunkering: moving from demonstrations to operations

Kevin Rouwenhorst July 28, 2025

In our recent episode of Project Features, we explored the outcomes from a recent ammonia bunkering demonstration at the Port of Rotterdam. With twelve ammonia transfer and bunkering demonstrations occurring in nine global locations since 2024, where does the Port Readiness Level for ammonia bunkering stand in Rotterdam and elsewhere, what are the key technical learnings, and what gaps remain?

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Energy China: 200,000 tons of renewable ammonia capacity online this September

Kevin Rouwenhorst July 06, 2025

Phase one of China Energy Engineering Group’s Songyuan project will come online this September, producing 200,000 tons per year of RFNBO-compliant ammonia. Ammonia produced in Songyuan (and Energy China’s other major renewable project in Chifeng) will be transported to Panjin Port, where Energy China co-owns a large-scale ammonia storage terminal.

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Ammonia pipelines: existing networks, future deployments, and safety considerations

Kevin Rouwenhorst June 26, 2025

In our June Episode of Project Features, the Institute for Sustainable Process Technology and Sunoco LP joined us to discuss ammonia pipelines. What lessons and best-practices can we draw from existing pipeline networks, and what design & risk mitigation factors are critical to the development of new ammonia pipeline routes?

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Emission performance of ammonia-fueled, four-stroke marine engines

Kevin Rouwenhorst June 03, 2025

We explore recent, full-scale, four-stroke engine testing results from IHI and Wärtsilä. Testing indicates N₂O emissions can be almost fully eliminated with catalytic treatment, and significantly lower NO_X emissions for engines running in ammonia mode, compared to running on diesel. While ammonia slip remains a key consideration due to the design of a four-stroke engine, catalytic treatment of the exhaust can eliminate even high concentrations, and release mitigation systems have already been designed and deployed to ensure safe operations.