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Magazine: Nitrogen+Syngas

Converting clean ammonia back into hydrogen

Advances in clean hydrogen and ammonia production is fuelling worldwide interest in a new market for hydrogen and ammonia to provide a reliable low-carbon energy future. Ammonia cracking, the dissociation of ammonia back into hydrogen, delivers a pathway to large-scale sustainable hydrogen production. In this article KBR, Johnson Matthey, thyssenkrupp Uhde, Duiker, Proton Ventures and Casale report on their technologies and approaches to ammonia cracking in a low carbon economy.

Black Sea deal in danger

Last year, in the wake of Russia’s invasion of Ukraine and the associated disruption to fertilizer and grain exports from both countries, there were dire predictions of the impact upon global food supply. That the worst of these predictions have not so far come to pass is in no small part due to the deal brokered by the United Nations and Turkey in July 2022 to allow exports of grain and fertilizers from Black Sea ports. According to the UN, since last July, some 29.5 million tonnes of grain and foodstuffs have been exported from Ukraine via the Black Sea, including nearly 600,000 tonnes in World Food Programme vessels for aid operations in Afghanistan Ethiopia, Kenya, Somalia and Yemen. Before the war, Ukrainian grain fed the equivalent of up to 400 million people worldwide, and the deal ensured that Ukrainian grain exports ‘only’ fell by 5 million t/a over the past year.

Nitrogen Industry News Roundup

Mining, metals and fertilizer business intelligence company CRU has launched a new low-emissions ammonia (LEA) price assessment in its Fertilizer Week price reporting service. The price takes a value-based approach, whereby a premium on the Northwest European ammonia price is calculated on an emissions-mitigated basis, and leverages CRU’s proprietary nitrogen asset emissions data combined with weekly European carbon prices to calculate the value of emissions mitigated. CRU says that it has leveraged its Emissions Analysis Tool to develop the premiums on an emissions-mitigated basis as opposed to a cost basis, allowing end-users to assess how the switch to LEA can deliver value to their business while contributing to their decarbonisation strategies. The Emissions Analysis Tool is a comprehensive asset-byasset emissions dataset for the nitrogen industry.

Problem No. 66: Urea storage for bagged urea

Storing urea under hot and humid ambient conditions can be a chall enge. Several quality parameters of the urea product itself like moisture, temperature and particle size distribution are critical. Fluctuations of these parameters over time are also important and can lead to caking issues and complaints by clients. Off-spec product means big losses in revenue and results in a troublesome stream that has to be handled separately. Learning from each other’s experiences is vital to minimise and avoid these problems. n