Section: CRUSU Market & Features

With the ongoing changes in gas field and refinery feedstock compositions, many sulphur recovery units around the world are facing turndown scenarios to such an extent that it is difficult to meet stringent environmental regulations. Equipment and instrumentation behave differently under turndown conditions, and not always in ways that are desirable. Start-ups and shutdowns can place demands on the equipment that are more severe than years of normal operation. In this article, Optimized Gas Treating, Sulfur Recovery Engineering and Comprimo share some of their learnings and experiences of these scenarios.

What are the limits for future single stream sulphuric acid plant capacities? H. Storch, C. Bartlett, and S. Mohsler of Outotec discuss design considerations for large capacity sulphuric acid plants with reference to the world’s largest acid plants built to date.

The Sulphur Institute is holding its annual meeting in Chicago, Illinois this year from April 20th-22nd.

Applied Analytics discusses potential improvements made possible with data and analytical measurements fed into improved mathematical models to produce a more proactive approach to control and better performance of sulphur recovery units, AMETEK Process Instruments explains the benefits of feed forward control, SICK reports on reliable continuous emission monitoring systems and WIKA introduces a new purge-free system to measure refractory temperature in the Claus reaction furnace.

Although North America is no longer the world’s largest sulphur exporter, it remains a major producer and consumer, and there are still significant exports and imports of sulphur into and out of the region.

Fluor/GAA continue to strive to improve the performance of the D’GAASS out-of-pit liquid sulphur degassing technology based on commercial operating experience and ever-changing environmental emissions regulations. T. Chow and S. Fenderson of Fluor Energy & Chemicals/ Goar, Allison & Associates discuss operating experience that has led to the improvements of the new patent-pending third generation D’GAASS 3G technology.

Claira Lloyd, Sulphur Editor and Sulphur Fertilizers Team Leader, Argus Media, assesses price trends and the market outlook for sulphur.

Kuwait is in the middle of a major overhaul and expansion of its refining capacity, as well as boosting LPG output and sour gas processing.

J. C. Bourdon, F. H. Brown and P. J. Photos of Streamline Innovations Inc. present the development and commercialisation of the Valkyrie™ process, which employs new chemistries and advanced control systems to remove H2 S from natural gas at size scales ranxging from single wells to entire fields, providing an operationally sustainable and commercially attractive alternative to standard H2 S removal technologies.

Middle East supply will return to normal at the start of the second quarter with bottlenecks in the UAE and maintenance in Saudi Arabia at an end. But this is unlikely to result in lower Middle East f.o.b. prices until the second half of April, if not early May. This is because buyers who found it hard to find March loading cargoes will snap up any April product as soon as it’s made available.