Category: Products

Pyrite roasting as a source of sulphuric acid continues to be a significant, albeit minor sector of the overall acid market.

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.

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.

New regulatory developments in Europe are focusing attention on eliminating microplastic residues in soils by adopting biodegradable fertilizer coatings. Major technology licensors and engineering companies are also developing new coating technologies for controlled-release fertilizers (CRFs).

A proper fertilization programme is necessary to sustain both citrus productivity and soil fertility over the longer term. ICL agronomists Fabio Vale, William Wang, Patricia Imas and Francisco Morell outline the nutrient needs of citrus fruit – a regionally important crop in the Americas, Europe and China.

Citrus fruit growers are an attractive end-market for fertilizer suppliers due to the high K and N requirement of this widely-cultivated cash crop and the efficacy of fertigation and foliar spraying. We examine the nutrient needs of citrus trees and how balanced application of fertilizers helps maximise citrus fruit quality and yield.

TOYO has a long history in urea granulation technologies and has recently added two new technologies to its product line-up.

Honeywell UOP’s nViro Hydro process provides an alternative solution to conventional hydroprocessing waste treatment utilising a sulphur recovery unit and tail gas treating unit. Janet Ruettiger of Honeywell UOP discusses the benefits of nViro Hydro which include improved operational efficiency, 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.

As plants move towards full unit control, Jochen Geiger of Ametek Process Instruments provides an overview of how the latest sulphur plant analysers are providing greater insight into sulphur plant operations.