Susterra 1,3 Propanediol For Brewery Heat Transfer Fluids

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Grant Cummings
6 years ago
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1 Susterra 1,3 Propanediol For Brewery Heat Transfer Fluids Susterra 1,3 Propanediol offers system owners an innovative, bio based glycol alternative for glycol loops

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3 Viscosity, cps 3 Glycol Viscosity Comparison 1600 Glycol Viscosity Comparison Propylene Glycol 1,3 Propanediol Ethylene Glycol Temp, o C Susterra 1,3 Propanediol exhibits lower viscosity in low-temperature conditions like those in brewery heat transfer loops, improving efficiency of the system.

4 4 Comparison of Pumping Pressure: Susterra 1,3 PDO vs PG Properties at -10º C 40.5 wt % PG 40 wt % PDO At -10º C, a 40% PG /60% water solution requires 2.4 times the pumping energy as a 40% Susterra / 60% water solution.

5 Degrees, F 5 Freeze Points of Aqueous Glycol Solutions 60 1,3 Propanediol Vol, % FP o F FP o C EG Vol% PG Vol% PDO Vol% Glycol Volume, % Susterra 1,3 Propanediol lowers freeze points in applications like brewery heat transfer loops.

6 Glycol Cracking Study Results 6 Glycol cracking occurs as heat transfer fluid sees temperature fluctuations, producing corrosive organic compounds and darkened fluid.

6 6 Glycol Cracking Study Results 6 Glycol cracking occurs as heat transfer fluid sees temperature fluctuations, producing corrosive organic compounds and darkened fluid. This often results in premature replacement of the HTX fluid DTL evaluated the relative stability of three glycols, using the same inhibitor package PG PDO EG After testing, the Susterra -based fluid exhibited significantly less darkening than the PG and EG fluids

7 7 Fluid Comparison: Nitrite Levels 7 The sample containing inhibited Susterra retained significantly more nitrites than the inhibited PG and EG samples

8 8 Fluid Comparison: Glycolate Levels 8 The Susterra -based fluid produced fewer glycolates than the inhibited PG and EG fluids

9 Susterra Propanediol Achieves NSF International Nonfood Compounds Registration 9 Ingredient for use in Heat Transfer Fluids with Incidental Food Contact (HTX-1) 2010 Press Release: DuPont Tate & Lyle Bio Products is excited to announce that Susterra propanediol has NSF International Nonfood Compounds Registration. Susterra is now acceptable as an ingredient for use in heat transfer fluids with incidental food contact (HTX-1) for use in and around food processing areas. Susterra propanediol offers formulators and suppliers a renewably sourced glycol base that meets the NSF International Registration Guidelines for Proprietary Substances and Nonfood Compounds. Formulators using NSF Registered Ingredients need only identify the Susterra propanediol name, the NSF Registration No , and concentration of Susterra in the finished product of their respective application form. Susterra is approved as an ingredient for use in HTX with incidental food contact for use in and around food processing areas including breweries. 9

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11 11 Glycol Comparisons Parameters EG PG Susterra Chemical Formula C 2 H 6 O 2 C 3 H 8 O 2 C 3 H 8 O 2 CAS # HMIS Rating: Health Fire Reactivity Molecular Weight Specific Gravity (20/20 o C) Weight/gal (US) lbs/20 o C Refractive Index (20 o C) Viscosity, cp (20 o C) Flash Point, o C( o F) 118(244) 103(217) 129(264) Boiling Point, o C( o F) 198(387) 187(369) 214(417) Freezing Point, o C( o F) -13(8.6) -60(-76) -24(-11.2) Vapor Density (air = 1) Explosive Limits: Lower (%) Upper (%) Autoignition Temp, o C( o F) 399(752) 415(779) 405(761) Vapor Pressure, mmhg (20 o C) 0.06 < Surface Tension, dyne/cm (20 o C) Specific Heat, cal/g/ o C (20 o C) Coeff of Expansion, per o C (10 o - 40 o C) Heat of Formation (kj/mol) Heat of Vaporization (kj/mol) 57.9 Heat of Fusion (kj/mol) 7.1 Critical Temp ( o C) 445 Critical Pressure (mpa) 6.55

12 12 Thermal Stability: Glycol Cracking Simulation 12 Solar thermal HTX often exceed 200 C at elevated pressure during low flow or stagnation events, causing glycol cracking and production of corrosive organic compounds This study was conducted to evaluate relative stability of three glycols, using the same inhibitor package (2.2% of #2792) Concentrated glycols: A: 1,2-Propanediol-based fluid (PG) B: 1,3-Propanediol-based fluid (PDO) C: Ethylene glycol-based fluid (EG) Simulate semi-closed loop solar HTX fluid application; boil samples in a reflux condition for 16 hours and analyze the residual HTX fluid: Reflux temperature: 362 F to 392 F (183.3 C to 200 C) Boiling points at 1 ATM: PG = 371 F (188.3 C) PDO = 417 F (213.9 C) EG = 387 F (197.2 C) When paired, the inhibitors and Susterra exhibited superior thermal stability vs. the PG and EG inhibited glycols

13 Enabling a Renewable Economy From: Molded Parts Oil Refining Chemistry The source is not renewable Resins To: Fibers Crops Biomass Feedstock Metabolic Engineering The source is renewable 13

14 GHG Emissions (kg CO2 equiv / kg) Non Renewable Energy (MJ/kg) Susterra Life Cycle Assessment* Comparison From cradle-to-gate, the production of Susterra consumes 40% less energy and reduces greenhouse gas emissions by more than 40% versus petroleumbased 1,3-propanediol and propylene glycol. GHG Emission Non Renewable Energy Green House Gas Emissions - 56% less than Propanediol, - 42% less than Propylene Glycol 63.9 Non Renewable Energy Use - 42% less than Propanediol, - 38% less than Propylene Glycol Susterra Propanediol (PO route) Propylene Glycol Susterra Propanediol (PO route) Propylene Glycol *Susterra LCA data based on Loudon process design data; peer reviewed by Five Winds International

15 Japan Case Study: HTX for Beverage Processing 15 Susterra -based fluid is being used in Japan as a heat transfer fluid with low viscosity that is safe for use in food & beverage processing plants

Low-Temperature Heat Transfer Fluids Newer Options

Low-Temperature Heat Transfer Fluids Newer Options Introduction Are you looking for the performance of an ethylene glycol-based system with the safety and toxicity performance of a propylene glycol-based