RRT2 Biofuels 2009

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Emerging Issues About Biofuels Under EPA's

Emergency Response Program

Gregory J. Wilson

U.S. EPA - Office of Emergency Management

Washington, DC 20460 wilson.gregory@epa.gov

Regional Response Team 2

West Point, New York

April 7, 2009

Legislative Background

Energy Policy Act of 2005

Biofuel mandates increase from 4 bgy (2006) to 7.5 bgy (2012).

Requires EPA to promulgate regulations implementing a renewable fuel program.

Energy Independence & Security Act (EISA) (2007)

Expand use of renewable fuels to 36 billion gallons per year (bgy) by 2022

Ethanol production from corn starch is capped at 15 bgy

Cellulosic Biofuel (renewable fuel from any cellulose, hemicellulose, lignin)

0.5 billion gallons by 2012

3 billion gallons by 2015

16 billion gallons by 2022

Advanced Biofuels (biomass-based diesel, other biofuels)

2

Biofuels Supply Chain

Feedstock

Production

Feedstock

Logistics

Biofuels

Production

Biofuels

Distribution

Biofuels

End Use

Ag Crops

Ag Residues

Energy

Crops

Forest

Residues

Wastes

Algae

Harvesting &

Collecting

Storage

Pre-

Processing

Transportation

Fuel types

Biochemical

Conversion

Thermochemical

Conversion

Biological

Conversion

Chemical

Conversion

Distribution by barge, truck, rail, pipeline

Storage in tanks

Dispensing

Transportation fuels in light & heavy duty vehicles & trucks, Off -

Road vehicles,

Locomotives, Flight technologies,

Boats/Ships

Power & Generators

Chemical Feedstocks for Manufacturing

3

Ethanol Production (supply) – Coastal Consumers (demand)

Biofuels Integration Roadmap

Oil Field

Production

Pipeline/Vessel

Animal Fat / Vegetable Oil (AFVO) Traditional

Petroleum Refinery

Company

AFVOs

Generator

Terminal

Dealers

Railcar

Biorefinery

Ethanol/biodiesel

Pipelines (under development)

Denatured Fuel Ethanol/Vessels

Denaturant

Railcar

Transloading Truck

Pipeline

Blending

Terminal

Dealer

Biodiesel

Wholesale/Jobber

Consumer

Company

Vessels with Crude

Petroleum Oil as Cargo

Vessels (barges) with

Petroleum Products as Cargo

Dealer

Current Ethanol Plants

http://www.card.iastate.edu/research/bio/tools/ethanol.aspx

as of 01/16/2008

Typical Ethanol Dry Mill Process

Grain (Corn)

Cleaning and

Milling

Mash

Preparation

Enzymes

Denaturant

2-5% Gasoline

Distillation

190 Proof

Dehydration

Molecular

Sieves

200 Proof

Ethanol

Storage

DDGS

Drying

Fermentation

DDGS

Separation

Dried Distillers Grains with Solubles (DDGS)

Gasification

Fuel

Ethanol

DDGS

Storage

7

Livestock

GTL:

Ethanol/Biodiesel

Denaturant – Why & How Much

U.S. Department of the Treasury - Alcohol and

Tobacco Tax and Trade Bureau (TTB)

Render ethanol unfit for human consumption

At least 2 gallons of denaturant to every 100 gallons of fuel ethanol

Natural Gasoline

Conventional Unleaded Gasoline

Straight Run Gasoline

Naphtha

Kerosene

Ethanol producers add ~4.76 % volume

8

Ethanol Plant Process Chemicals

Ethanol production process (pH adjustment, nutrients)

Sulfuric Acid - Corrosive

Sodium Hydroxide (Caustic Soda) – Corrosive

Ammonia Source - Anhydrous, Hydrous - Corrosive

Cleaning chemicals keep fermentation clean

Chlorine-based Solution - Corrosive

Caustic Soda - Corrosive

General water treatment chemicals

Chlorine- or Bromine-based Solution - Corrosive

Ammonia-related Solution - Some Hazards

Surfactants - Some hazards, typically mild

Ethanol and Ethanol Blended Fuels, Emergency Response Training and Safety Issues, National Association of State Fire Marshals, July 1, 2008 www.firemarshals.org/data/File/docs/Emergency-Response-IAFC.pdf

EPA (R5) – Ethanol Manufacturing Facility Response Overview

Potential Risks of Ethanol

• Human Health Effects

 Exposure to fuel ethanol may occur by breathing its vapors

(inhalation), getting it on the skin or in the eyes (skin absorption), or swallowing it (ingestion).

 Exposure to ethanol vapors in high concentrations or for prolonged periods can be harmful to human health.

 Ethanol can cause local dehydration and lesions.

 Absorption, which occurs swiftly from the gastrointestinal tract, causes euphoria, with subsequent dizziness, inebriation, paralysis, diminished reflex, and respiratory paralysis.

• Ecological Effects

 Pure ethanol can be toxic to fish at high enough concentrations

 Lethal concentrations for fish

(rainbow trout): 11,200 to

15,300 milligrams per liter

(mg/L).

 Pure ethanol is completely miscible in water

 Pure ethanol may biodegrade aerobically and anaerobically

 Biodegradation may decrease the dissolved oxygen in surface water, resulting in fish kills and other adverse impacts to oxygen-dependent species (direct or indirect).

Ethanol Spill

Ethanol Spill

Typical Biodiesel (e.g., FAME) Generation

Methanol

Vegetable Oil

NaOH

Acid

Water

Drying

Feedstock

Preparation

Transesterification

Reaction

Catalyst

Preparation

Crude Biodiesel Phase

Separation

Neutralization

Glycerin Phase

Water

Washing

Acid

Acidification &

FFA Separation

Free Fatty Acids

FFA

Finished

Biodiesel

Methanol

Recovery

Crude Glycerin

Glycerin

Refining

Purified

Glycerin

Current Biodiesel Plants

Biodiesel Plant Process Chemicals

Biodiesel production process

Methanol

Volatile; Flammable (Class 3)

Sodium Hydroxide (Caustic Soda)

Corrosive; Catalyst

Potassium Hydroxide

Corrosive; Catalyst

Sodium Methylate

Catalyst

Hexane

Volatile; Flammable (Class 3)

Glycerol (glycerine)

EPA (R5) – Biodiesel Manufacturing Facility Response Overview

Biofuel Spill

Fire and release point

Vegetable Oil (

Biodiesel Feedstock

) Spill

• Properties similar to petroleum.

 Light non-aqueous phase liquid (LNAPL).

• Toxic effects: coating of feathers, fur, and gills is harmful.

 Absence of odor and sheen results in reduced avoidance.

 Reduces thermal insulation and buoyancy.

• May burn if ignited.

• May clog water treatment plants (due to the polymerization property).

17

Effects of Vegetable Oil Spills

• High BOD may cause oxygen depletion.

 Greater effect on DO than petroleum oils.

• Unsaturated oils (liquids at cold temperatures) are subject to chemical (abiotic) oxidation.

 Polymerization due to chemical oxidation and cross-linking.

 Rancid odors may develop rapidly.

 Unsaturated oils form gum balls and varnishes in presence of oxygen, which resist biodegradation.

• Saturated oils turn solid or semi-solid at cool temperatures, highly resistant to biodegradation.

• May be toxic or form toxic products.

 Especially free fatty acids and chemical oxidation products.

18

Biofuels Infrastructure

Transportation and Non-transportation Related

Distribution terminals

Blending facilities

Transfer hubs

Rail lines & railcars

Barges & waterways

Transport trucks

Pipelines

Ethanol and biodiesel currently do not use many of the traditional petroleum products infrastructure

Transloading Biofuels

Typical individual railcar capacity

~30,000 U.S. gallons

Shipped in unit trains

Can be as high as 100 railcars

Transferred from rail cars to tank trucks for delivery to blending terminals

Transfer process equipment not necessary “fixed” in a single location

20

Relevant Emergency Response Issues

Fires and spills involving ethanol and ethanol/gasoline blends pose some complex challenges for emergency responders

Ethanol is a polar/watermiscible flammable liquid

(one that mixes readily with water)

Degrades the effectiveness of fire fighting foams that are not alcohol resistant

DOT PHMSA Guide 127 - Flammable Liquids Polar/Water-miscible, 2004 Emergency Response Guidebook (ERG2004) http://hazmat.dot.gov/pubs/erg/g127.pdf

Ethanol Emergency Response Coalition (EERC), http://www.ethanolresponse.com

21

Relevant Emergency Response Issues

Alcohol-Resistant – Aqueous Film Forming Foam

(AR-AFFF)

Effective with ethanol blends from E10 through E95

E10 can be extinguished with AFFF and AR-AFFF but require higher application rates to prevent burn back

Sprinkler application, which is typical of the fire suppression systems at many storage terminal loading racks

Creates a physical, polymer-membrane barrier between the foam blanket and fuel surface

Alcohol Resistant – Film Forming Fluoroproteins (AR-FFFP)

Ethanol and Ethanol Blended Fuels, Emergency Response Training and Safety Issues, National Association of State Fire Marshals, July 1, 2008 www.firemarshals.org/data/File/docs/Emergency-Response-IAFC.pdf

22

EPA Regulations

Spill Prevention, Control, and Countermeasures

Facility Response Plans

Risk Management Plans

Emergency Planning and

Community Right to

Know

23

Summary

Recent energy legislation mandates biofuel usage.

Requires EPA to develop a new Renewable Fuel Standard.

Expand biofuels to 36 billion gallons by 2022.

New generation, storage, and distribution infrastructure challenges

Integrating biofuels into traditional fuel supply chain

Infrastructure challenges

Fires and spills involving ethanol and ethanol/gasoline blends pose some complex challenges for emergency responders

Biodiesel & other substances in biofuels generation

Additional Resources

DOT PHMSA Guide 127 - Flammable Liquids Polar/Watermiscible.

2004 Emergency Response Guidebook (ERG2004)

 http://hazmat.dot.gov/pubs/erg/g127.pdf

Ethanol Emergency Response Coalition (EERC)

 http://www.ethanolresponse.com

Guidebook for Handling, Storing, & Dispensing Fuel Ethanol

(DOE)

 http://www.nrel.gov/docs/fy02osti/30849.pdf

EPA Region 5 - Ethanol & Biodiesel Response Manuals

EPA Region 7 - Ethanol & Biodiesel Plant Manuals

 http://epa.gov/region07/priorities/agriculture/biodiesel_manual.pdf

http://epa.gov/region07/priorities/agriculture/ethanol_plants_manual.pdf

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