Tag: Yara

Every urea plant continuously fights again corrosion. The intermediate product ammonium carbamate is extremely corrosive under synthesis conditions. The applied materials of construction require oxygen to form a protective passive layer of chromium oxides. The ammonium carbamate solution will continuously dissolve the passive layer, therefore it is vital to continuously supply oxygen, typically in the form of air, to maintain the passive layer. During blocking-in conditions of the synthesis section it is not possible to add air and the oxygen present will be consumed as a result of the passive corrosion reactions, while at the same time the passive layer dissolves in the ammonium-carbamate solution. At a certain point, the oxygen content in the solution becomes too low to assure a passive layer. At that moment active corrosion will start with much higher corrosion rates than passive corrosion. The picture on the left side shows the passive layer (blue, brown, grey surface) and the picture on the right side shows active corrosion (a shiny silver surface). It is important to realise that once active corrosion starts it cannot be stopped, adding more oxygen at this stage, for example, will not work. Active corrosion will continue, leading to the risk that the protective layer will be severely damaged. The only way to solve this situation is to drain the synthesis section and re-passivate the surfaces.

Sulphur is becoming an increasingly important crop nutrient, due to a combination of lower airborne sulphur emissions, the increasing prevalence of high analysis fertilizers, and higher cropping intensities.

An update on the latest in fertilizer ship loading, handling, bagging and blending, including new contracts, company news and advances in technology.

2021 is turning out to be a very good year for profits and earnings. Take Nutrien and Yara International, for example, the fertilizer sector’s two biggest companies by market capitalisation.

BHP has finally given the go ahead for stage one of its Jansen potash mine project in Saskatchewan, Canada.

OCI subsidiary Fertiglobe says that it has partnered with the Abu Dhabi National Oil Company (ADNOC), to enable the sale by ADNOC of the first cargo of blue ammonia to Itochu in Japan, for use in fertilizer production. Fertiglobe, a 58% − 42% partnership between OCI and ADNOC respectively, will produce the blue ammonia at its Fertil plant at Ruwais in Abu Dhabi for delivery to ADNOC’s customers in Japan. This represent the first production milestone of a planned scale-up of blue ammonia production capabilities in Abu Dhabi, which is expected to include a low-cost debottlenecking program at Fertil. In addition, it was announced in June that Fertiglobe will join ADNOC and sovereign wealth fund ADQ as a partner in a new world-scale 1.0 million t/a blue ammonia project at Ta’Ziz in Ruwais, subject to regulatory approvals. The design contract for this project has been awarded, with a final investment decision expected in 2022 and start-up targeted for 2025. A feasibility study was also agreed in July betweenh the state-owned Japan Oil, Gas and Metals National Corp. (Jogmec), Inpex and JERA as well as ADNOC to explore the possibility of producing 1.0 million t/a of blue ammonia in Abu Dhabi and transporting it to Japan.

Venkat Pattabathula, a member of the AIChE Ammonia Safety Committee, reports on the American Institute of Chemical Engineers’ Safety in Ammonia Plants and Related Facilities Symposium, held virtually on 30 August to 2 September 2021.

The UK has published its Hydrogen Strategy, setting out the government’s ambition to create a low carbon hydrogen sector, with up to one third of the UK’s energy consumption being hydrogen-based by 2050. The commitments set out in the strategy unlocks £4 billion of government investment by 2030. The government plans 5GW of low carbon hydrogen production capacity and the establishment of carbon capture, use and storage (CCUS) in four industrial clusters by 2030, as well as blending of hydrogen into the existing gas network and a ‘twin-track’ approach to hydrogen production, using both electrolytic and CCUS-enabled low carbon hydrogen production in order to scale up production in time to meet the UK’s 2030 and 2050 carbon emissions targets.

Although the stranded gas boom that led to the construction of the region’s nitrogen capacity in the 1980s-2000s may be largely over, the Middle East remains the largest nitrogen exporting region in the world.

INEOS Enterprises has announced the completion of the sale of its Sulphur Chemicals business to International Chemical Investors Group, for an undisclosed sum. INEOS Sulphur Chemicals business is Spain’s largest dedicated manufacturer of sulphuric acid and oleum, serving clients in both agriculture and chemical intermediates via its 400,000 t/a plant in Bilbao. The business will become part of WeylChem’s advanced intermediates and reagents portfolio, which includes an existing sulphuric acid and oleum plant located in Lamotte, northern France. WeylChem is wholly owned by the International Chemical Investors Group (ICIG).