4 years ago

Improving the production of hydrogen from the gasification of carbonaceous solids using supercritical water until 1000bar

Improving the production of hydrogen from the gasification of carbonaceous solids using supercritical water until 1000bar
In this work, the advantages provided by supercritical water (SCW) to one of the most extended methods to produce H2, the gasification of carbonaceous materials, are investigated. The broad range of experimental conditions assayed (1–1000bar) allows not only the comparison of the use of steam and SCW but also the investigation of how H2 production varies within the supercritical region. The results obtained reveal important advantages when the supercritical fluid is used. In the gasification with SCW, H2 production is greater, and in general, the consumption of the raw material is optimized since more H2 is obtained when the same amount of solid is consumed. Furthermore, the gaseous streams are very rich in H2 and CO2 and poor in CO and CH4. On the other hand, the use of two carbonized materials of different natures (a phenolic textile fiber and holm oak wood) allows us to highlight that H2 production depends strongly on the surface irregularities and surface chemistry of the solid. The material of vegetal origin is more suitable because more H2 is produced and mixtures of gases that are more easily purified are obtained from it. However, higher amounts of CO2 than those registered for the solid of synthetic origin are released during its gasification.

Publisher URL: www.sciencedirect.com/science

DOI: S0016236117309341

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.