ethanol

Ethanol Video

Narasi SridharNovember 17, 2008

© Det Norske Veritas AS. All rights reserved Slide 210 April 2023

About the Speaker

Materials engineer

Director of the DNV Research & Innovation Materials Program

Over 25 years experience in areas of materials development, corrosion and sensors

Worked with oil and gas, chemical process, and nuclear industries

Involved in the last 4 years on biofuel corrosion and stress corrosion cracking issues


Need for biofuel


Alcohol Based Biofuels

1st Generation 2nd Generation 3rd Generation

FeedstockSugar

Starch

Agriculture/food processing wastes

Grasses

Other cellulocic materials

Transgenic Materials

(low lignin trees)

Process Fermentation and Distillation

Enzyme Treatment, Fermentation,

Distillation

Advanced Enzyme Treatment,

Fermentation, Distillation

ProductEthanol

Other alcohols

Cellulosic Ethanol

Other alcohols

Cellulosic Ethanol

Other alcohols


Diesel Based Biofuels

1st Generation 2nd Generation 3rd Generation

FeedstockOil seeds, food

processing fats and oils

Agricultural/food processing wastes

Algae

Process Trans esterification with methanol

Fischer-Tropsch biomass to liquid

process

Advanced Processing of Algae

ProductBiodiesel (FAME)

Unprocessed vegetable oils

Fischer-Tropsch Diesel

Biodiesel, Algae Oil


U.S. Ethanol Production Locations

Most of the ethanol is produced in the Nation’s heartland, whereas 80 percent of population lives near its coastlines


One 16” pipeline can take continuous flows on a daily

basis equal to 15 barges

Transportation Volumes

From AOPL, 2007


Piping Failures in Terminals

Leak

Oxygen is the most important factor in causing SCC

Chloride and methanol are secondary factors

Water above 6 percent prevents cracking


A Staged Approach to Address Challenges

Industry Guidelines & StandardsFor Safe Transport of Ethanol

Assessment of Pipeline Safety & Reliability (Pre-Commissioning,

Operation, Post-Transport)

Characterization of Drivers(Environmental, Materials,

Loading)Laboratory Research & Testing

Applications & Engineering

Coordination of Industry

& Regulatory Bodies


Key Challenges Facing Ethanol Transportation in Pipelines

Quantifying and managing risk

Making the business case for new construction or dedicated lines

Achieving operating efficiency with new product mixes

Finding new materials solutions

Learning from Brazilian experiences

Investing under Changing regulations

Understanding potential environmental threats

Improving coordination and communication

From, Ethanol Roadmap Workshop, October 25-26, 2007


What is DNV doing

Industry and government program to define safe operating regimes for transporting fuel grade ethanol

- Effect of blending- Effect of batching- Adding inhibitors and oxygen scavengers- Elastomeric materials

Developing monitoring methods to provide advanced warning of conditions leading to SCC

Collaborative research with universities to understand the fundamental mechanisms of cracking


Future

Risk management

Technology qualification

Sustainability assessment


http://www.dnv.com/

ethanol

Business

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