Title:
Experimental Assessment of Pine Woodchips Gasification at Steady and Part Load Performance
Author(s):
Soares, J., Oliveira, A.C.
Document(s):
Paper
Slide presentation
Abstract:
The trend towards decentralised electricity generation and combined heat and power (CHP) is continuously increasing. The transition towards a decentralised power system relies on small-scale and often intermittent generation, bringing new challenges such as matching the demand with supply. A possible solution is the use of renewable energy technologies able to accommodate the demand profile, such as biomass gasification. However, operation at part load is required and thus limiting the gasification performance. In this paper, a novel experimental assessment and performance results of a biomass gasification system are presented, consisting on the evaluation of the system performance for steady-state conditions at different loads. The assessment was carried out through experimental tests using a commercial biomass gasification system. Gasifier performance at steady state conditions showed relatively stable reduction and restriction temperatures, with average values of about 729°C and 915°C, respectively. These high temperatures assure a producer gas LHV of about 5.5 MJ/kg. Decreasing the gas flow rate, resulted in a decrease of both reduction and restriction temperatures. Nonetheless, the gas LHV increased until 62.5% where a maximum of 6 MJ/kg was measured. Concerning the equivalence ratio, it decreased with load, attaining a minimum value at 80%, where the best cold gas efficiency results were found (74%).
Keywords:
gasification, power generation, wood chips, decentralised generation, small scale application
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Gasification for power, CHP and polygeneration
Event:
27th European Biomass Conference and Exhibition
Session:
2BO.2.2
Pages:
513 - 519
ISBN:
978-88-89407-19-6
Paper DOI:
10.5071/27thEUBCE2019-2BO.2.2
Price:
FREE
