Section: CRUSU Market & Features

Small quantities of sulphur in a refinery or gas feed can present challenges for conventional large scale sulphur recovery techniques.

With increased demands to reduce SO2 emissions and lower energy consumption, Clark Solutions highlights the advantages of single absorption sulphuric acid plants compared to double absorption plants.

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.

Sulphur prices declined in Q4 following the increases seen during Q3, because of ample availability and limited spot demand. One contributing factor was that phosphate fertilizer producers in China, the largest importer of sulphur, have cut downstream production due to increased export restrictions. In addition, high sulphur stocks at Chinese ports and continuing high domestic sulphur production mean that domestic buyers have other options aside from international purchases.

This case study reports on the successful collaboration of two experienced partner companies to replace the problematic upper part of a co-current flow quench tower in a spent acid plant and shows the benefits of using resistant, pre-lined workshop fabricated equipment.

Sulphur prices are expected to increase during H1 2024, reversing the trend of recent declines, though good availability will limit the upside to price gains in the short term. However, should fertilizer production prove weaker than expected, prices may remain below expected levels.

Axens has developed a new titania-based catalyst named CRS 41, which has a much larger porosity than its renowned predecessor, CRS 31 catalyst. Thanks to an improved catalyst manufacturing process and a new recipe, the porosity of CRS 41 has been increased while preserving the mechanical resistance for loading, allowing customers to optimise their capex by either reducing the Claus reactor size or loading volume of TiO2 catalyst.

Volatility in sulphur prices has been reduced in the past year following the large price spike and subsequent drop in the summer of 2022. This price volatility has been due to various disrupted seasonal trends from the global pandemic, uneven recovery, geopolitical shifts and demand destruction for fertilizers.

Honeywell UOP’s nViro Hydro process provides an alternative solution to conventional hydroprocessing waste treatment. Benefits include creating a new revenue stream and reduced capital outlays, operating expenses and water use.

Gouda Refractories continues to upgrade its refractory solutions for the sulphur recovery industry as well as developing new superior products for installations operating at higher temperatures due to oxygen enrichment.