Magazine: Sulphur

This troubleshooting case study describes an incident at one of the sulphur recovery units at BPCL Kochi Refinery, India. Following a maintenance turnaround of the unit in 2022, unusually high H2 S and SO2 were observed at the outlet of the Claus section. This created an additional load on the tail gas reactor, which led to frequent plugging in the quench column and frequent outages in the tail gas unit, creating environmental and reliability issues in the unit. The activities to identify the root cause of the incident are described and the measures to solve the problem are shared.

Veolia says that its subsidiary Veolia North America has signed an agreement for the divestment of Veolia North America Regeneration Services, which includes its sulphuric acid and hydrofluoric acid regeneration activities for refineries, to private equity firm American Industrial Partners for $620 million. These activities represented revenues of around $350 million in 2023. The financial closure of the transaction is expected soon. Veolia’s Sulphuric Acid Regeneration Business includes its sulphuric acid and potassium hydroxide regeneration, as well as sulphur gas recovery, and sulphur-based products production businesses.

China’s acid production continues to grow as new smelters come on-stream. But high domestic demand from phosphate production as export restrictions are lifted and a shortage of copper concentrate may limit the potential for acid exports.

Optical gas imaging technology, enhanced by artificial intelligence, offers a groundbreaking approach to monitoring SO2 emissions in real time. Andrés Russu of SENSIA introduces SENSIA’s RedLook solution which offers fully autonomous, 24/7 continuous monitoring of SO2 leaks, providing industries with the tools they need to maintain environmental integrity and operational safety.

Saudi Aramco has sold another tranche of 1.54 billion shares, amounting to 0.64% of the company’s total ownership. The sale, at 27-29 riyals per share, was oversubscribed by a factor of five, making it more popular than the previous IPO, in 2019, which sold 1.5% of the company’s shares for a total of $29.4 billion. Foreign take up of shares was also higher this time, with more than half of sales to foreign investors, compared to 23% for the 2019 sale. However, it remains relatively small in scale compared to Saudi Arabia’s ambitions as part of its Vision 2030 plan to encourage more foreign direct investment and wean the country off its dependence on oil. Aramco is the world’s largest oil company in terms of both daily crude production and market cap, and remains 82% in the hands of the government and 16% held via the country’s sovereign wealth fund, the Public Investment Fund (PIF).

The pursuit of operational excellence requires continuous process monitoring, together with qualified analysis of the collected data. The Digital Process Monitor (DPM) provides a process digital twin which consists of an accurate process plant model that incorporates the licensor’s knowledge and expertise in sulphur recovery technology, thereby providing continuous insights into plant performance. This article provides an overview of the DPM features focusing on the related benefits in terms of overall operational improvements and plant efficiency for the sulphur recovery unit.

Representatives from across the global sulphur and sour gas community convened in Abu Dhabi from 20 to 23 May to discuss and debate the key strategic themes that are driving the industry. The Middle East Sulphur Conference (MEScon) is a premier event that brings together representatives from the entire sour gas and sulphur value chain to promote technology and innovation, lessons learned, best practices, knowledge transfer and R&D.

Brazilian phosphate producer Galvani says that it has begun work on its major phosphate expansion in Bahia state, including a new production plant at Ceará, in partnership with Indústrias Nucleares do Brasil (INB). The company aims to reduce Brazil’s northern and northeastern regions’ reliance on imported fertilizers. The first phase includes $133 million of investment, including $76 million for new phosphate mining at Irecê, and $38 million for Luís Eduardo Magalhães factory, also in Bahia. This expansion will take capacity from 600,000 t/a to 1.2 million t/a by 2026. The expansion at Luís Eduardo Industrial Complex includes expansion of sulphuric acid capacity from 165,000 t/a to 250,000 t/a.

Sulphur prices are expected to recover from declines in May and June and continue climbing over the coming months, though good availability will limit upside.

The refining industry continues to pivot towards Asia, with knock-on effects for sulphur output.