I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical Engineering MagazineChementator Briefs
Nanofiltration Toray Industries, Inc. (Tokyo, Japan; www.toray.com) has created what…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More SHOW PREVIEWS

Comment Business & Economics

This pyrolysis process coproduces hydrogen and carbon dioxide

By Chemical Engineering |

Hydrogen is produced directly from biomass and other carbonaceous materials, with simultaneous capture of carbon dioxide, in a process being developed by Energy Quest, Inc. (Edmonton, Alta., Canada; edlinks.chemengonline.com/6897-533). In the PyStR (pyrolytic steam reforming) process, crushed or shredded feedstock and steam are fed directly into a circulating bed of calcium oxide. The fuel is pyrolized at about 1,400°F to produce Hâ‚‚, CO and COâ‚‚; and the CO and COâ‚‚ immediately react with the CaO to form calcium carbonate. The CaCO3 (plus ash) is separated from the Hâ‚‚ and calcined at 1,800–1,900°F to produce COâ‚‚ and recover CaO, which is recycled to the first stage. About 20% of the produced Hâ‚‚ is burned with air to fuel the indirect calcination step and to raise steam for pyrolysis. The combustion of Hâ‚‚ with air for calcination also produces water (steam) and nitrogen. So far, Energy Quest has tested the process at the 200–300-lb/h scale, using various biomass fuels, coal, refuse-derived fuel and shredded scrap tires. Wilf Ouellette, the company president, says the process promises to be relatively inexpensive because it uses cheap feedstocks, while the capital cost…
Related Content
Bio-based adipic acid
Adipic acid is a dicarboxylic acid that is widely applied to the production of nylon, polyurethanes, plasticizers and other polymers.…
More than beer is brewing
This year, the recipient of the Othmer Gold Medal is Kiran Mazumdar-Shaw, chairman and managing director of Biocon Ltd. (Bangalore,…
The Biogas Boom
It probably isn’t going to solve all the world’s energy needs, but producing biogas from waste can help slash the…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How separation processes profit from Industrial Internet of Things (IIoT) solutions
Up to 80% increased production rates in plastic recycling
Higher throughput and purity in sodium bicarbonate production with up to 15% less energy consumption
Help feeding nations with chemical filtering technologies
Not at the forefront of Industry 4.0?

View More

Live chat by BoldChat