Renewable Petrochemicals From Biomass by Catalytic Fast Pyrolysis

Sustainable Engineering Forum
2010 AIChE Annual Meeting
AIChE Annual Meeting
November 9, 2010 - 7:00pm
Lignocellulosic biomass has tremendous potential as a feedstock to make renewable fuels and petrochemicals from biomass. The current impediment to the utilization of our biomass resources is that most processes to convert biomass are not currently economical because of long residence times, the need for expensive enzymes, high pressures and many complicated processing steps. Pyrolysis based approaches are proving to be the cheapest and most efficient method to convert solid biomass into renewable fuels and chemicals due to these processes short residence times, low pressures and simple processing steps. Pyrolysis is the thermal decomposition of biomass, and can be used to produce a mixture of organic molecules that can be condensed into a bio-oil or pyrolysis oil. The bio-oil is the cheapest liquid fuel made from biomass on the market today. However, the bio-oil is a low quality product that is acidic, insoluble with petroleum based fuels, has a high oxygen content and phase separates with time. Furthermore, attempts to upgrades this oil typically require large amounts of expensive hydrogen. Zeolite catalyst can be added directly into the pyrolysis reactor to produce aromatics and olefins directly from solid biomass in a process called catalytic fast pyrolysis. The advantage of this approach is that high value aromatics and olefins can be produced directly from solid biomass in a single catalytic reactor using inexpensive zeolite based catalysts. In a specially designed fluidized bed reactor the pyrolysis vapors enter into the zeolite pores where they undergo a series of dehydration, decarbonylation and oligomerization reactions to produce aromatics and olefins. The shape, pore structure, and active sites of the zeolite catalysts are critical in obtaining high yields of the desired aromatic products. Using the power of catalysis, reaction engineering, conceptual process design combined with fundamental understanding of the catalytic and pyrolytic chemistry we have been able to tune this process to achieve high yields of the desired aromatics and olefins from solid lignocellulosic biomass. Pyrolysis based technologies have tremendous potential for the conversion of lignocellulosic biomass into renewable fuels and chemicals. As will be demonstrated in this presentation chemistry, chemical catalysis and chemical engineering are critical 21st century needs to help make renewable energy and chemicals a practical reality.
Professional Development Hours
0.5 PDHs
You will be able to download and print a certificate for these PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.
Presenter(s): 

Would you like to access this content?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. Purchase Technical Presentation

    You must purchase this technical presentation using one of the options below.
    If you already purchased this content recently, please click here to refresh the system's record of ownerships.

Pricing

Credits 0.5 Use credits
List Price $25.00 Buy now
AIChE Members $15.00 Buy now
AIChE Undergraduate Student Members Free Free access
AIChE Graduate Student Members Free Free access
Related Topics: