Automatic binder extraction principles using the Asphalt Analyzer

Transcription

1 Automatic binder extraction principles using the Asphalt Analyzer 1. What is the asphalt analyzer 2. How to promote safe handling of solvents 3. Installation requirements 4. Test set up sequence 5. Results Aggregates Filler Binder 6. Focus on solvent distillation 7. Rotary evaporator step 8. Vacuum pump option 1

2 InfraTest Asphalt Analyzer aggregates filler washing drum binder Complies with EN 12697/1: Original patented technology for closed solvent system for automatic asphalt extraction 2 Asphalt Analyzer

3 Asphalt Analyzer: Making Solvent Use SAFE Filling Device with foot pedal DOW SAFECHEM our worldwide partners in SAFE worldwide asphalt extraction 3 Asphalt Analyzer

4 1. Electrical connection Unit Installation Requirements 400 V, 60 Hz, 3/N/PE, 7 kw Fuse protection: separate electric circuit 3 x 16 A Compatible with 208 V and 240 V systems - transfomer required 2. Cooling Water Temperature cooling water: Flowmeter C (50-60 F) Volume of cooling water: 5-8 l/min Water pressure range: 3-6 bar pressure (45-87 psi) 3. Exhaust Connetion: Connection to exhaust hood via ventilation exhaust hose 40mm diameter about 1000 mm length 4 Asphalt Analyzer

5 Asphalt Analyzer: Test Set Up Sequence 1. Fill washing drum with sample (max. 7.7 lb/3.5 kg)/ Weigh the sample 2. Close the washing drum. 3. Insert drum into the washing chamber 4. Close the washing chamber door (secured lock that remains closed until extraction complete) Asphalt Analyzer

6 Asphalt Analyzer: Test Set Up Sequence 4. Insert paper liner into the centrifuge filler cup (Max filler capacity: oz/300g) 5. Insert filler cup into centrifuge (Close the centrifuge cover. 6. Choose the program sequence on touchscreen Asphalt Analyzer

7 Asphalt Analyzer: Results Aggregates 7 Asphalt Analyzer

8 Washing drum principle 3 solvent spraying nozzles Max 3.5 kg asphalt mix Revolving washing drum Ultra Sonic System 8 Asphalt Analyzer

9 Washing drum principle Integrated heating system yeilds clean dry results Size of mesh: µm (0.09 in some countries) 9 Asphalt Analyzer

10 Asphalt Analyzer: Results Filler 10 Asphalt Analyzer

11 High speed centrifuge Max cup capacity: 300g Intergrated heating system yeilds dry filler results Solvent binder mix flows through into distillation chamber 7800 rpm Filler particles do not enter into binder mix 11 Asphalt Analyzer

12 Asphalt Analyzer: Results Binder/solvent mixture 12 Asphalt Analyzer

13 Asphalt Analyzer: Results 13 Asphalt Analyzer

14 Distillation Principle Start condition before first extraction Solvent calculation 25 Liters clean solvent 0 Liters Example: 2000 g. of HMA sample with 5 % binder 14 Asphalt Analyzer

15 Distillation Principle After extraction 1: Solvent calculation 23.1 Liters clean solvent 1.9 Liter solvent 100 g. binder Example: 2000 g. of HMA sample with 5 % binder Distillation ON Concentration OFF 15 Asphalt Analyzer

16 Distillation Principle After extraction 2: Solvent calculation Example: 23.2 Liter clean solvent 1.8 Liter solvent 200 g. binder 2000 g. of HMA sample with 5% binder Solvent content gradually decreases with each susequent extration Max. solvent distilation levels will not be reached until the Consentration ON function is activated Distillation ON Concentration OFF 16 Asphalt Analyzer

17 Distillation Principle After extraction 3: 23.3 Liter clean solvent 1.7 Liter solvent 300 g. binder Solvent calculation Example: 2000 g. of HMA sample with 5 % binder Distillation ON Concentration OFF 17 Asphalt Analyzer

18 Distillation Principle After extraction 4: Solvent calculation Example: 24.4 Liter clean solvent 0.6 Liter solvent 400 g. binder 2000 g. of HMA sample with 5 % binder Solvent partially recovered automatically via concentration process. Distillation ON Concentration ON 18 Asphalt Analyzer

19 Asphalt Analyzer: Results Rotary evaporator Note: Solvent recovered in rotary evaporator can be added back to clean TCE side tank after stabilization 19 Asphalt Analyzer

20 Vacuum Pump Option Vacuum Pump Option: If you don t require binder for further testing Empty the dirty side in a waste container The risidual amount of solvent present in this side of the chamber will be lost Allows to safety and quickly drain the used solvent/binder mix from the system 20 Asphalt Analyzer

21 Asphalt Analyzer Timing Sequence Total extraction time for 2 kg of asphalt mix: 1. Sample Preparation: 2. Extraction Asphalt Analyzer: 15 min 45 min Now quantitative analysis of the binder can begin 3. Rotary evaporator: 45 min Now physical properties of binder can be measured 21 Asphalt Analyzer

22 Thank you! Questions? Comments? 22 Asphalt Analyzer