1-2-2 アルカリ金属のチャー粒子間移動を利用したin-situ加触媒担持による低温接触ガス化(1-2 ガス化,Session 1 石炭・重質油等)

概要

論文の詳細を見る
In this study, we have investigated the gasification behavior in catalytic low temperature steam gasification of coal char samples through in-situ loading of alkaline catalyst. Either KOH or NaOH loaded Loy-Yang (LY) brown coal char prepared at 650 ℃ was used as catalyst donor. Acceptor char samples were prepared from Hinoki, brown coal (LY), bituminous coal (Daido), anthracite (Hongai) and Graphite. The acceptor and donor particles were mixed with the fixed carbon ratio of 1:1. The steam gasification was performed at 700 ℃ for 2 h under the steam partial pressure of 0.5 MPa (Ar balanced) in a thermogravimetry equipment. The catalysts successfully transferred between donor and acceptor char particles and promoted the gasification of the later. The promotion effect is significant for the acceptor char samples with higher specific surface area and those from lower carbon content raw material. The fact indicates that proposed process is preferable especially for lower grade coal expected to be used for the future power source.
2012-07-30