project 2: co 2 reinjection for abita brewing company team 6: dan venooker, glenn beatty, marcus...
TRANSCRIPT
Project 2:CO2 Reinjection for
Abita Brewing Company
Team 6: Dan Venooker, Glenn Beatty, Marcus Cole, Chris Descalzi
Overview
• Abita Brewing Company
• Brewing Process Flow Chart
• Carbonation in the brewing process
• Methods of CO2 reinjection
• Objectives of reinjection
• Constraints
• Rough Process Flow Diagram
• Market Competition
• Founded in 1986
• Located just north of New Orleans
• Locally owned and operated
• Brew >151,000 barrels small-batch craft beer and >9,100 barrels root beer annually
Abita Brewing Company
Abita Brewing Company (con’t)
• Beer ingredientso Water- no purification required,
taken directly from the naturally pure abita springs aquifer
o Malted barley- provides a source of food (sugar) for the yeast
o Yeast- digest sugar to form alcohol and CO2 (different types of yeast used for ales vs. lagers)
o Hops- add bitter flavor and aroma to the beer
Carbonation in the Brewing Process
• CO2 is formed through the fermentation process (along with alcohol)
• CO2 dissolved in water is referred to as carbonation
• Excess CO2 is generally produced, and is allowed to escape
• Vented CO2 may contain H2S and DMS (Dimethyl sulfide)
Outlets for CO2 Reinjection
• Bottle-purging: Removes air to prevent oxidation, which affects flavor
• Carbonation of root beer: Most non-alcoholic root beer (like Abita’s) is entirely carbonated via forced carbonation
• Carbonation of beer: Many beers do not contain the desired level of carbonation after fermentation (equilibrium controlled)
Constraints
• Low sulfide content - no regulations by FDA other than labeling for sulfites ( > 10 ppm)o < 0.3 ppm for release into atmosphere (waste)o Ask Jamie Jurado for specifications
• May be different for reinjection/bottle-purging
• High pressure required for forced carbonation and low temperature required to purify CO2
• Sulfides present safety hazard (both in the plant as a breathing hazard, and sulfites in the beer ruin flavor)
Objectives
• Capture gas released during fermentation process
• Scrub CO2 stream to maintain unwanted sulfides below required limits
• Reinject purified CO2 into root beer, or into bottle-purging process
Required Unit Ops
• Abita has recently acquired used equipment from a nearby planto We don’t know exactly what yeto Closed plant operated on larger scale than Abitao May or may not be applicable
• Our preliminary design (all batch operated)o Carbon Capture Hoodo Flame? (Perhaps)o Packed-Bed Absorber (Potassium Permanganate)o Condenserso Compressors
Potential Market
• Abita is the 14th largest craft brewery in America as of 2012o One spot behind local
brewery Dogfish head
• Craft brewing is a growing sectoro Currently 14.2% by
dollarso 20% growth last year
Market Competition
• Some beers are carbonated naturallyo Yeast is re-fed and some
CO2 is released
• Large plants usually collect fermented CO2 and reinject it
• Small plants generally purchase liquefied CO2 and inject it towards the end of the brewing process
• Hand pumped CO2 filters are sometimes used to inject CO2 into kegs
Market Competition
• Companies like GEA Brewery Systems offer turn-key installations for all parts of the brewing process, including CO2 capture
• These systems are typically not used for batch breweries
• The market is pretty wide open, but the path has yet to be blazed
• Excited to work with Jamie Jurado on a solution to Abita’s carbonation needs
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