Tag: Waste

With the sulphur content of crude oil and natural gas on the increase and with the ever-tightening sulphur content in fuels, refiners and gas processors will require additional sulphur recovery capacity. At the same time, environmental regulatory agencies of many countries continue to promulgate more stringent standards for sulphur emissions from oil, gas and chemical processing facilities. Rameshni & Associates Technology and Engineering discusses options for compliance with new regulations on emissions regarding IMO 2020 compliance and report on the results and evaluation of three case studies. Worley Comprimo reports on the revamp of a sulphur complex built in the late 1980s at a refinery in East Asia with the aim to increase the capacity, improve the availability and reliability and make the unit environmental compliant.

Ineos subsidiary Inovyn has announced the permanent closure of its ‘sulphur chemicals’ (mainly sulphuric acid) plant at its Runcorn site, and its withdrawal from the UK sulphur chemicals market. The company said in a statement that the decision follows a management review of the business in the light of recent events. Specifically, in October 2020, an unexpected interruption to the third-party power supply to the Runcorn site resulted in the plant being taken offline, and during restart, it was identified that a number of critical plant components had suffered significant damage. As a result, to ensure the safety and integrity of the plant it was taken back offline. Since then, in spite of significant effort and investment to rectify these issues, Inovyn says that it has become clear that it will not be possible to safely restart the plant for at least a further 18-24 months, and the company has decided to close the plant permanently.

We report on the latest potash mining and processing technology from Andritz, Ebner, Köppern, K+S and Veolia. Recent case studies for potash projects globally are also provided.

Wet sulphuric acid technology when used as tail gas treatment for a Claus unit, or in place of a Claus unit with amine-based tail gas unit, brings many benefits if there is a market for the sulphuric acid and steam. A new alternative is to have a WSA unit in combination with a Claus unit and to recycle the acid to the Claus unit for higher sulphur recovery efficiency.

Prayon’s Hadrien Leruth and Marc Sonveaux highlight the latest phosphate production developments at the company – and share their experience of how innovative ideas are validated, industrialised and turned into commercially-viable technologies.

Fertilizer coatings play an integral role in minimising the degradation of fertilizers during transport, handling and storage. Increasingly, customers also want to know if the coatings they buy are sustainable too. But what exactly is a sustainable fertilizer coating – and how can its sustainability be properly defined and measured? Lucas Moore , director of coatings technology at Arkema-ArrMaz, weighs up these thorny questions and provides some clear-cut answers.

A few years ago DME production from methanol gave a major boost to world methanol demand, with DME being used as a blendstock for LPG. However, demand plateaued and DME has not had the takeoff that its proponents feel it should have. Could new renewable DME processes give it the boost it needs?

ClimeCo says that it has promoted Dr. Scott Subler to Chief Science Officer (CSO). Subler has made an enduring mark on the carbon offset world over the last 15 years. From overseeing the first US offset delivery from a dairy farm methane capture project to chairing the Offsets Committee for the Chicago Climate Exchange, Subler has been a major influence on many carbon offset methodologies that are used today. His work investigating different types of lagoon cover systems for dairy and swine farms in different climates continues to impact new methane capture installations, and his advocacy for organic waste composting projects resulted in the protocol used today at the Climate Action Reserve.

New approaches and novel processing schemes employing oxygen enrichment in sulphur recovery units have been developed and commercialised. In this feature Siirtec Nigi, Linde, Blasch, Fluor and RATE report on their latest developments.

Metal markets are used to ups and downs, and, as we discuss elsewhere in this issue, this year has seen more than most, mainly thanks to the virus that is still keeping us indoors – as I write this, the UK has just moved back into a second national ‘lockdown’. However, this year has seen the fortunes of one metal in particular simply rise and rise – nickel.