Effects of a Nickel Reactor Liner and Varying Water to Glycerin Molar Ratio during Supercritical Water Reformation of Glycerin


Biodiesel production and its glycerin byproduct have increased in recent years in response to rising demands for renewable and greener fuel technologies. While glycerin has beneficial properties for a variety of end uses, its over-abundance in the market place has rendered a new challenge of finding other economically viable and sizable uses for this commodity. An experimental feasibility study of the novel conversion of glycerin into hydrogen via non-catalytic reformation using supercritical water was conducted in a 400-mL tubular reactor constructed of Haynes Alloy 230. The evaluated parameters for the novel reaction process included water-to-glycerin molar ratios ranging from 3 to 24 using the Haynes Alloy 230 reactor without a liner and with a Nickel 201 liner. For one study, the reactor temperature was kept at approximately 873 K and 973 K for another. The space time for both studies was maintained at approximately 100 seconds. The effects of varying water-to-glycerin molar ratio and reactor liner materials upon gaseous hydrogen production as well as on the overall process chemistry were evaluated.

Meeting Name

2010 American Institute of Chemical Engineers (AIChE) Annual Meeting (2010: Nov. 7-12, Salt Lake City, UT)


Chemical and Biochemical Engineering

Keywords and Phrases

Biodiesel Production; End-uses; Feasibility Studies; Fuel Technology; Linear Material; Market Place; Molar Ratio; Non-catalytic; Process Chemistry; Reaction Process; Reactor Temperatures; Space Time; Supercritical Water; Tubular Reactors

Document Type

Article - Conference proceedings

Document Version


File Type





© 2010 American Institute of Chemical Engineers (AIChE), All rights reserved.

Publication Date

12 Nov 2010

This document is currently not available here.