Tag: Sulphuric Acid

In this case study, CS Combustion Solutions presents a comprehensive strategy for the capacity enhancement and optimisation of a sulphuric acid plant that was facing several operational challenges.

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.

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.

Sulphur prices in China are expected to recover with downstream demand anticipated to surge in the second half of the year and good affordability to support raw materials purchasing. Chinese nitrogen, phosphate, and potash prices have surged, driven by heightened demand for the summer corn application season. In particular, average 11-44 MAP prices jumped 16% from $390/t ex-works to $463/t in Hubei province. However, sulphur prices have taken a while to follow the trend on phosphate prices. Port prices have fluctuated in the range of $126-130/t c.fr since late March, and import prices fell from a high of $112/t c.fr to $100/t c.fr, capped by high port inventory and sufficient supply. Port inventories in China remain around 2.8 million tonnes, well above the 2022 average of 1.4 million tonnes and the 2023 average of 2.07 million tonnes. These elevated stock levels limited the upside for prices in China and provided buyers with options. At the start of July, Sinopec’s Puguang, the largest sulphur producer in China, increased its sulphur sales prices at Wanzhou port up $4/t RMB980/t, while its factory price at Dazhou was up RMB20/t at RMB950/t ex-works. These prices are considerably down from RMB1,600/t in December 2022 and RMB 2,945/t from mid-June 2022 and are the lowest since July 2023, but are still up from a low of RMB605-655/t at the end of August 2020.

A plant operating a spent acid decomposition furnace as part of its sulphuric acid production facility desired to increase acid production primarily by processing additional spent acid while making minimal modifications to the plant equipment and operations. The Messer solution entailed introducing oxygen in two steps, both as an enrichment to the combustion air and by direct injection into the furnace. The resulting performance improvements exceeded the project objectives for acid production and spent acid decomposition, without increasing NOx emissions. This paper provides a summary of the system start-up and tuning and presents the resulting improvements and lessons learned.

We profile leading suppliers of tailor-made pumps to the phosphate, potash and sulphur industries.

How does an engineering company complete the basic and detailed engineering for a phosphoric acid plant – and provide the full design for the off-site sections and utilities? Jan Tytgat, De Smet Agro’s Process Engineering Manager, explains an approach based on partnership with the technology licensor and client that combines engineering expertise with experience.

Sulphur benchmarks firmed around the globe in April. Although availability remains ample, downstream production is expected to rise in the weeks ahead and further upside for prices is expected, at least in the short term. Prices increased the Middle East, Indonesia, India, Brazil, and the Mediterranean. The Middle East spot price was assessed up an average $3/t at $83-88/t f.o.b. The previous low end of the range was no longer considered achievable. The price has climbed 27% since mid-February this year. The benchmark is down 53% from early December 2022, but had climbed 47% from the end of July 2023 to its mid-October average of $110/t f.o.b. before declines set in once again. Chinese buyers returned to the international spot market in late April following weeks of inactivity, lifting c.fr prices.