Research and development needs in filtration and dewatering
- CSIRO Div. of Coal and Energy Technology, North Ryde, New South Wales (Australia)
- Bokela Ingenieurgesellschaft fuer Mechanische Verfahrenstechnik mbH, Karlsruhe (Germany)
The first part of this paper deals with technology issues. These are categorized as (1) fundamental aspects, specifically suspension characteristics and dewatering mechanisms, along with process modelling and control; (2) pre-treatment procedures, both physical and chemical, that optimize the dewatering characteristics; (3) types of dewatering devices based on centrifuges, vacuum and pressure filters with particular reference to various combined field approaches using two or more complementary driving forces to achieve better performance. The second part of the paper (attributed principally to the first-named author) deals with related R and D issues, namely economic assessments and justification for particular R and D strategies, including benchmarking and operational factors that apply in industrial environments. Dewatering operations and R and D needs are also analyzed from the perspective of matching and integration into overall process flowsheets, and in the context of alternative processing or utilization strategies which avoid the dewatering step. The analysis concludes with a discussion on effective identification and utilization of existing knowledge, and the R and D management process. Although the paper draws heavily on experiences relating to the coal industry, much of the material is relevant to fine suspensions in general.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 378038
- Journal Information:
- Drying Technology, Vol. 14, Issue 6; Other Information: PBD: 1996
- Country of Publication:
- United States
- Language:
- English
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