Tag: RATE

The US is experiencing a new boom in nitrogen projects, with a number of carbon capture ammonia plants under development.

Catalyst development for nitric acid plants is strongly dependent on operating pressures and nitrogen loading levels. Dr Hadi Nozari of Johnson Matthey provides a review of some key catalyst design principles, emphasising the critical role of operating pressure in catalyst selection and highlighting the innovative contributions of Johnson Matthey in advancing catalyst technology for ultra-high-pressure ammonia oxidation in nitric acid plants.

Low carbon intensity hydrogen and ammonia production schemes from KBR, Air Liquide, Mitsubishi Heavy Industries, Casale and Johnson Matthey.

Cobalt-molybdenum (CoMo) catalysts are integral components of tail gas units (TGUs), playing a vital role in reducing harmful sulphur dioxide (SO2 ) emissions arising from Claus sulphur recovery units. Effective activation of these catalysts is essential for their optimal performance. The consequence of sulphiding at low temperatures and atmospheric pressure in low temperature TGUs is to compromise effectiveness of catalyst activation. In the first part of this two-part article, Michael Huffmaster , Consultant, explores CoMo catalyst activation at low pressure, focusing on sulphiding reaction pathways and the impact of temperature and the composition of the sulphiding media on reaction kinetics, specifically the concentration of H2 , H2 S, and H2 O.

The nickel market has been through a period of unprecedented change over the past few years due to demand for batteries for electric vehicles, with Indonesia becoming a centre for production via high pressure acid leaching.

MECS, Inc. (MECS) has developed a new impaction-based mist eliminator called Brink® Prime Impact™ , which offers equivalent or improved efficiency at higher throughput and the same pressure drop as traditional impaction beds, resulting in the ability to debottleneck existing inter-pass absorption towers and final absorption towers in sulphuric acid plants or design new or replacement towers with smaller diameters, thus reducing investment cost.

Toyo Engineering Corporation (TOYO), a global leading engineering contractor, has developed g-Methanol® technology. Methanol, traditionally produced from fossil resources, is now gaining attention for synthesis using carbon dioxide and hydrogen from renewable sources. This article explores methanol synthesis technology and the challenges in utilising renewable energy sources.

As the production of renewable methanol continues to scale up, it will provide a long term, carbon-neutral energy solution to different transport sectors. However, the optimum design parameters for green methanol plants are substantially different to natural gas-based methanol plants and pose new challenges to the methanol loop designer. Connor Longland of Johnson Matthey (JM) discusses the challenges and presents the benefits of the tube cooled converter for e-methanol production.

Lisa Krumpholz, Managing Director of Navigance, delves into the world of artificial intelligence (AI) and discusses its potential to enhance process optimisation in syngas plants.

KBR offers an end-to-end digitalisation solution specifically designed for green ammonia plants to balance the available renewable resources and consistently deliver the lowest levelised cost of green ammonia (LCOA). This article outlines some of the key modules of the KBR end-toend digitalisation solution developed to overcome the challenges in green ammonia operation and achieve best in class, safe and reliable plant operation.