Although the Covid-19 pandemic has been the big story in every market this year, the disruption and dislocations that this has caused have masked some of the bigger trends in the urea market, such as the revival of Chinese exports and India’s push for self-sufficiency.
“T here are,” Mark Twain once remarked, “three kinds of lies: lies, damned lies, and statistics.” It’s certainly difficult to know what to make of economic statistics and indicators at the moment, in the world turned upside down that the Covid-19 pandemic has delivered. Here in the UK, we are told that April and May saw the national economy contract by 25%, the largest fall in 300 years of the Bank of England’s economic record keeping, and the situation is very similar across much of the developed world. But how real is that figure? After all, we were all sent home in March, to ‘lock down’ and prevent the spread of the virus, and we are only now starting to move back towards some semblance of normality. Some of us, fortunately or not, have still been able to work from home, but for much of the economy, especially for much of the service sector; tourism, travel, restaurants and hotels, theatres and cinemas – there has been zero activity. Remove half of the largest sector of the economy for three months and surely a 25% fall in output is exactly what you’d expect? But is that real, or just a number? Has that activity gone for good, or, now that we are emerging, blinking into the sunlight again, can we switch the economy back on again as easily as we switched it off?
Sulphur ’s annual listing of new or recently completed sulphur forming projects worldwide covers both new sour gas and refinery sulphur forming projects as well as upgrades at existing units.
Although amine solution foaming problems have been studied and reported extensively, direct correlations about the root causes of foaming have not been completely established. This article approaches the problems of foaming from a different perspective, rather than theoretical discussions, the topic is centred exclusively on Amine Experts’ field-related experiences with amine foaming episodes.
Meena Chauhan , Head of Sulphur and Sulphuric Acid Research, Argus Media, assesses price trends and the market outlook for sulphur.
Sulphur demand losses for production of phosphoric acid are forecast at 2.2 million t/a in 2020. Factoring in demand gains in markets such as Morocco, the sector is expected to see a drop of 800,000 t/a in 2020. Recovery is forecast from 2021 with a 2 million t/a increase forecast.
There was a rapid increase in sulphuric acid demand for copper, uranium and nickel leaching from 1995-2015, but over the past few years growth in this sector has slowed dramatically. Now however there are signs that demand is starting to pick up again with several new projects under development.
Sulphur demand in Australia has been boosted by the restart of the nickel leaching plant at Ravensthorpe, and new HPAL projects are under development, but a slew of new phosphate projects are not scheduled to consume more acid domestically.
At the end of last year, in our November/ December 2019 issue, I remarked upon the fresh impetus that the International Maritime Organisation’s (IMO) target of reducing carbon emissions from shipping by 50% in 2050 (compared to a 2008 baseline) had given to the idea of using ammonia as a shipping fuel. This year, in spite of You Know What, things seem to have, if anything, accelerated.
High pressure urea equipment often has lined nozzles. A lined nozzle is a full strength carbon steel nozzle that is protected against carbamate corrosion by a 5 or 6 mm thick stainless steel liner plate, which is welded to the carbon steel nozzle on either end. This design is however very vulnerable to fatigue cracking due to the difference in thermal expansion between the austenite liner and the carbon steel nozzle. History shows that such a design will lead to cracking in the long term. The following case study reports on a serious incident in a urea plant where a leak in a urea reactor nozzle caused a plant shutdown but could have resulted in rupture of the high pressure vessel.