SPIN Solids Processing Industrial Network Workgroup Drying Ir. H.J.M. Slangen (DSM) Slangen-SPIN Page 1
Contents What is SPIN Spin workgroup Drying Project Fluid Bed Spray Granulation Project Selection of Dryers Slangen-SPIN Page 2
SPIN (Solids Processing Industrial Network) A consortium of 14 industrial companies. Formed at SUSTECH 7 in October 1996. Received financial and administrative backing from the European Commission in December 1998. Slangen-SPIN Page 3
Partners in SPIN Norsk Hydro Norway Novo Nordisk Denmark Dow Deutschland Germany DuPont UK Syngenta UK ICI UK DSM Research NL BAYER Germany Siemens - AXIVA Germany BASF Germany Roche Switzerland Rhodia France ATOFINA France BP Chemicals France Also Participating : Akzo Nobel (NL), Ajax Slangen-SPIN Equipment (UK), Zeppelin (D) Degussa-Hüls Page 4 (D), Sulzer (CH)
Network Objectives (1) Primary Objectives : Identify the current status of solids processing technology (state of the art). and the needs of the European Chemical Industry in relation to solids processing. Determine the goals of specific projects which will meet the needs of industry where the state of the art is lacking in depth. Identify the most appropriate specific research institutions (Universities or SME s) to collaborate on these specific projects. Facilitate the submission of at least 6 collaborative solids processing R&TD actions within the EU. Slangen-SPIN Page 5
Network Objectives (2) Secondary Objectives : Establish SPIN as the central source of information concerning solids processing technology in Europe. Increase the membership of SPIN so that industrial organisations from at least 10 member states of the European Union are represented. Ensure that the SPIN Network continues to play a role as the lead propagator in the development of solids technology well beyond the four year duration of the Thematic Network implementation phase. Slangen-SPIN Page 6
The Working Groups : 1 1 0 1 01 0 1 0 0 Characterisation of Solids Isolation of Solids Transportation of Solids Generation of Solids Consumer Related Technology Modelling and Simulation Geoff Taylor - Zeneca J. Schelling - Norsk J.Weber - Dow Hub Slangen - DSM H.Feise - BASF G. Esper - BAyer S.Heffels - Aventis D.Graham - ICI P.Bach - Novo Nordisk U.Bröckel - BASF K.Looney - DuPont M. Battrum - BASF Slangen-SPIN Page 7
Working Group Drying Meetings Stade ( 98), Geleen ( 99), Maastricht ( 01) Questionnaire: results published in Drying Technology, 18 (2000), 7, 1601-4 Potential topics: - Spray drying - Contact drying - Selection system - Standard test methods - Math. modelling - Fluid bed spray granulation Slangen-SPIN Page 8
Fluid bed spray granulation (1) Preproposal made by BASF and DSM Participants: Universities: Karlsruhe (D), Magdeburg (D), Toulouse (F) Equipment manufacturers: Glatt (D), Heinen (D), Hosokawa (NL) Chemical industry: BASF (D), DOW (D), DSM (NL) Slangen-SPIN Page 9
Fluid bed spray granulation (2) Meetings: Merseburg ( 02), Stade ( 02) Goal: to make FBSG as simple and cost effective as spray drying Work packages: Process understanding (hydrodynamics, seed formation, spraying system, classification) Modelling (verification, tests for parameters) Product properties / measurement and control Energy savings Reduction of investment and maintenance costs Process safety Slangen-SPIN Page 10
Selection of dryers (1) Objective: to develop a system for the selection of a dryer, consisting of the following parts: 1. A system containing all possible dryer types (> 50), their advantages and disadvantages and rules to make a selection. 2. A program to make the first calculations about dimensions, flows, energy consumption etc. 3. A data base of equipment manufacturers (more than 200) and the type, sizes and prices of their deliveries. 4. A data base of the experience with all kinds of chemical products. Slangen-SPIN Page 11
Selection of dryers (2) Principles: The user must make the choice, not the computer. The computer must provide the necessary information Based on a logical classification of dryer types Based on practical experience Possible participants: Akzo, DOW, DSM, Roche TNO, Hyprotech, Univ. Moscow Slangen-SPIN Page 12
Selection of dryers (3) Way of classification: Level 1:Type of feed and process Liquid (solution or slurry) Wet particles (filter cake, granules etc.) Drying without change in psd Drying combined with milling Drying combined with agglomeration Large parts, sheets etc. Slangen-SPIN Page 13
Selection of dryers (4) Way of classification. Level 2: Mode of operation/ mode of heating batch or continuous convective or conductive or radiation Level 3:Way of mixing: not mixed rotating mechanically - pneumatically Slangen-SPIN Page 14
Selection of dryers (5) Example: continuous/conductive/mechanically mixed Heated wall: Paddle dryer Heated rotor and wall: Steam tube dryer Disc dryer Disc dryer with two shafts Disc dryer with discs parallel to flow Screw dryer (Holoflite) Paddle dryer with one shaft (Porcupine) Paddle dryer with more shafts (Nara) Self cleaning paddle dryer (List) Thin layer, heated wall: Horizontal thin layer dryer (Solidaire) Slangen-SPIN Page 15
Selection of dryers (6) For each dryer type: Short description Products for which it is suited Typical advantages and disadvantages Capacity (U, maximum A, maximum T) Vendors (typical differences, size range etc.) Investment costs Literature Slangen-SPIN Page 16
Selection of dryers (7) Vendors horizontal thin layer dryer The first three are identical. 1. Hosokawa (NL- Doetinchem) Type Solidaire: τ = 2-20 min, tip speed 10-20 m/s, air cocurrent or countercurrent. Largest size A= 107 m 2 (d = 2.3 m, L = 15 m) 2. Barr Rosin (Maidenhead, UK) Type Rosinaire: 3. Babcock BSH (D-47829 Krefeld) Type Solidizer: A up to 67 m 2, d =.25-2.4 m, n up to 1100 rpm for the smallest diameter, 135 rpm for the largest one (4-20 m/s). Up to 540 paddles in 4 or 6 rows. 4. Vomm (I-20089 Rozzano) d = 0.35-1.7 m. Evaporation capacity for the largest one 2.5-4.5 t/h. 5. VRV (I-20060 Ornago) A = 2.5-34.5 m 2, τ = 15 s-4 min, tip speed 15-45 m/s, evaporation cap[acity 150 kg/m 2.h at air temperature 600 o C and wall temperature 400 o C. 6. Buss SMS (D-35501 Butzbach) Slangen-SPIN Page 17