The Simulation Study of Gasification System with Various Feedstocks and Products

摘要

Gasification technology is recognized as next generation power plant technology which can replace conventional coal power plant. It produces not only electricity but also chemical energy as a form of syngas. The syngas can be further transformed into valuable chemicals such as H_2, DME and liquid fuel etc. Present investigation focuses on the evaluation of gasification performance based on the 300MW gasification plant with various feedstocks such as Illinois#6 coal, heavy residue oil and oil sand. The simulation model of the gasification plant is composed of sub-process such as fuel pretreatment, gasification, ash removal, AGR and combined cycle based on ASPEN plus. For estimating performance of gasification plant model, simulation results are compared with the actual operation data of demo plant. To do this, evaluating parameters are chosen as cold gas efficiency and carbon conversion of gasifier, power output of combined cycle and production rate of H_2 and DME.