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Singapore;

Performance of CO 2 Dry Cleaning with Cavitation. Dr. -Ing. habil. Victoria Dutschk Dr. ir. M.J.E. van Roosmalen Prof. dr. G.J. Witkamp. Stevia Sutanto. Singapore;. 1. 1. Presentation outline. Introduction conventional process, CO 2 dry cleaning Method

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Singapore;

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  1. Performance of CO2 Dry Cleaning with Cavitation Dr. -Ing. habil. Victoria Dutschk Dr. ir. M.J.E. van Roosmalen Prof. dr. G.J. Witkamp Stevia Sutanto Singapore; 1 1

  2. Presentation outline • Introduction • conventional process, CO2 dry cleaning • Method • material, set-up, process conditions • Results and discussion • washing results • Conclusions 2 2

  3. Conventional process Tetrachloroethylene/perchloroethylene/PERC BANNED in California by 2023! August 29, 2014 August 29, 2014 3 3 3 Results Conclusions Methods Introduction

  4. Main objective Why CO2? • Tunable properties • Recyclable • Safe • Cheap Performance • non-particulate soil: comparable • particulate soil removal: low  less mechanical action • Abundant • No drying required August 29, 2014 4 4 Results Conclusions Methods Introduction

  5. CO2 Phase Diagram Operating condition: 50 bars, 283 K August 29, 2014 5 5 Results Conclusions Methods Introduction

  6. Material & analysis Soil  motor oil/soot and sebum (WFK, Germany) Textile  cotton, polyester, polycotton, wool Cleanability and redeposition level:  Soil Additional Density (SAD)  scanner  Cleanability (Г) and redeposition level (RL) Additives  ClipCOO detergent (Kreussler, Germany) a: monitor before washing b: monitor after washing c: reference before washing d: reference after washing August 29, 2014 6 Results Conclusions Methods Introduction

  7. CO2 dry-cleaning set-up August 29, 2014 7 Results Conclusions Methods Introduction

  8. Process conditions August 29, 2014 8 Results Conclusions Methods Introduction

  9. Observation of bubbling c e a b d f g August 29, 2014 9 Results Conclusions Methods Introduction

  10. Mechanical action on cleanability (motor oil/soot) bubbling August 29, 2014 10 Results Conclusions Methods Introduction

  11. Mechanical action on redeposition level(motor oil/soot) bubbling August 29, 2014 11 Results Conclusions Methods Introduction

  12. Mechanical action on cleanability(sebum) bubbling August 29, 2014 12 Results Conclusions Methods Introduction

  13. Mechanical action on redeposition level(sebum) bubbling August 29, 2014 13 Results Conclusions Methods Introduction

  14. ClipCOO detergent on cleanability(motor oil/soot) bubbling bubbling with ClipCOO August 29, 2014 14 Results Conclusions Methods Introduction

  15. ClipCOO detergent on redeposition level(motor oil/soot) bubbling bubbling with ClipCOO August 29, 2014 15 Results Conclusions Methods Introduction

  16. Conclusions • The best washing results are achieved simply by bubbling without using any additional energy sources. • There is no need to add ClipCOO detergent since it does not improve the washing results. • The washing performance of CO2 is lower (<50%) than that of PER. August 29, 2014 August 29, 2014 16 16 Results Conclusions Methods Introduction

  17. Thank you for your attention! Acknowledgement • EFSM – Twente University • Process Equipment – TU Delft • Feyecon Carbon Dioxide Technologies • Unilever • Kreussler • STW August 29, 2014 17 17

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