Paper details

Title:

Optimization of Biocrude Production through Co-Processing Torrefied Biomass with Lowgrade Wet-Biomass in Dual Entrained Flow Gasification and Steam Hydrogasification

Author(s):

Kempegowda, R.S., del Alamo, G., Matas Güell, B., Skreiberg, Ø., Tran, K.Q.

Document(s):

Abstract:

This article deals with techno­economics of a novel integrated duel bed gasification system and its integration with FT­synthesis for biocrude, district heat and electricity. The proposed integrated biocrude production process consists of four main steps: (a) oxygen­enriched gasification of torrefied woody biomass in an entrained flow reactor, b) hydrogasification of low­grade wet biomass for production of methane­rich gas product, c) gas conditioning by reforming and low temperature water­gas shifting and CO2­separation, and (d) low temperature FT­synthesis. Heat recovered from cooling of the syngas produced in the entrained flow reactor and from FT synthesis is utilized as input heat for the hydrogasification process, thereby minimizing heat losses and increasing the efficiency of the overall biocrude production. Methane­rich gas produced from hydrogasification is reformed with steam at high­temperature in the entrained flow reactor enhancing hydrogen rich syngas production suitable for FT­synthesis. Techno­economic analysis suggests that 25% mixing of wet feedstocks decreases the cost of biocrude by 17%.

Keywords:

entrained flow gasification, hydrogasification, torrefied biomass, low-grade biomass, FT-synthesis

Topic:

Biomass Conversion Technologies for Heating, Cooling and Electricity

Subtopic:

Gasification for power, CHP and polygeneration

Event:

22nd European Biomass Conference and Exhibition

Session:

2AV.1.21

Pages:

596 - 603

ISBN:

978-88-89407-52-3

Paper DOI:

10.5071/22ndEUBCE2014-2AV.1.21

Price:

FREE