The development of high efficiency Hurricane and ReCyclone® systems allows their application either for emission control or value-added product recovery. The purpose of this paper is to present not only the performance of these systems, but also a model to predict in a more realistic way the collection efficiency of a gas cyclone with or without partial recirculation. Some experimental results obtained in emission control and value-added product recovery are also presented, together with the corresponding predictions on grade and global collection efficiencies.
- Advanced Cyclone Systems, S. A.
- Hurricane and ReCyclone® systems for emission control and value ...
Case study - Filtration for Alcan (France) swarf recovery at an aluminium billet plant
In 1998 this Glosfume ceramic filter system was originally installed at British Aluminium plant in the UK to filter oily fumes from an induction furnace smelting oily swarf recovered from billet sawing. The filter is injected with 2C talc before being recycled back to the inlet ducting. At a pre-set time, the talc is discharged to a collection drum and the cycle is repeated. During 2006 British Aluminium at Workington closed down and sold out to Alcan with most of the plant transferred to France. This included...
Case study - Product Recovery (France)
Product recovery of cobalt and lithium oxides This installation was designed to enable the customer to quickly change elements between production runs - thereby not only does this save time and money but also maximises operational efficiency during product recovery. To avoid filtrate `hang ups` and potentially costly cross-contamination, all internal surfaces are mirror polished and manufactured to pharmaceutical standards. To make it easier to handle several different process materials, the filter contains...
Comparison of phosphorus recovery from incineration and gasification sewage sludge ash
Incineration of sewage sludge is a common practice in many western countries. Gasification is an attractive option because of its high energy efficiency and flexibility in the usage of the produced gas. However, they both unavoidably produce sewage sludge ashes, a material that is rich in phosphorus, but which is commonly landfilled or used in construction materials. With current uncertainty in phosphate rock supply, phosphorus recovery from sewage sludge ashes has become interesting. In the present work, ashes...
Mosul battle brings environmental damage, with serious impacts on health, prospects of recovery
Civilians in Northern Iraq are falling victim to additional suffering - including near suffocation and respiratory illnesses - due to what appears to be a scorched-earth policy employed by retreating ISIL militants following the launch of a major military offensive to retake the city of Mosul. Nineteen oil wells have been set ablaze by armed groups near Al Qayyarah, located south-east of Mosul, with citizens and armed forces exposed to toxic fumes. The burning crude oil produces a wide range of pollutants,...
Energy recovery from thermal treatment of dewatered sludge in wastewater treatment plants
Sewage sludge is a by-product generated from municipal wastewater treatment (WWT) processes. This study examines the conversion of sludge via energy recovery from gasification/combustion for thermal treatment of dewatered sludge. The present analysis is based on a chemical equilibrium model of thermal conversion of previously dewatered sludge with moisture content of 60–80%. Prior to combustion/gasification, sludge is dried to a moisture content of 25–55% by two processes: (1) heat recovered from syngas/flue gas...