Abstract

Coal/CaO powder mixtures were continuously supplied into a reactor to react with steam at high pressure and high temperature. At 923 K and 5.0 MPa, the gas produced from the reaction of Taiheiyo coal/CaO with steam consisted of mainly H 2, with smaller amounts of CH 4, C 2H 4, C 2H 6 and CO 2. Increasing the pressure enhanced H 2 production and CH 4 decomposition. Above 3 MPa, the gas from the reaction contained <3% CO and CO 2. Under high pressure, CaO reacted with steam to form Ca(OH) 2 which absorbed CO 2. The H 2/CH 4 ratio in the product gases from three different rank coals (Datong coal (bituminous), Taiheiyo coal (sub-bituminous), Wyoming coal (lignite) followed the order Datong>Taiheiyo>Wyoming. The Wyoming and Datong coals produced less H 2 than the Taiheiyo coal.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.