Cherry stones were pyrolysed in a nitrogen atmosphere. The compositions and properties of the gases, liquids, and solids generated were determined over a range of temperatures (300–800 °C) and heating rates (5–20 K min −1 ). Char yields fell and gas yields rose with increasing temperature. The oil fraction yield passed through a maximum at 400–500 °C. The decline at higher temperatures was likely due to strong cracking increasing the gas yield. Increasing the heating rate led to a decrease of the char and oil yields and an increase of gas yield. Production varied in the ranges 20–56.8% char, 32–58% oil, and 8.8–47.6% gas, with a mean heating value of 31.8 MJ kg −1 , 11.5 MJ kg −1 and 15.7 MJ N −1 m −3 , respectively. The char had a high fixed carbon content (>76%) as well as the high heating value, and hence could be used as solid fuel, as precursor in activated carbon manufacture, or to manufacture category-A briquettes. Aliphatic and aromatic hydrocarbons and hydroxyl and carbonyl compounds were the major components of the oil, which therefore can be used as liquid fuel or, better, as a source of liquid hydrocarbons. The gas composition was identified as hydrogen, carbon monoxide, methane, carbon dioxide with traces of ethylene and ethane, and can be used to heat the pyrolysis reactor or to generate heat/electricity in a gas-turbine/vapour-turbine combined cycle. The activation energy of the gas formation was determined to be 92.5, 42.8, 58.1, and 21.9 kJ mol −1 for hydrogen, carbon monoxide, methane and carbon dioxide, respectively. We studied the kinetics of the thermal decomposition of the feedstock using isothermal and non-isothermal thermogravimetric methods at different temperatures (300–600 °C) and heating rates (5–25 K min −1 ). The results indicated that the isothermal pyrolysis process consisted of two stages and the non-isothermal three stages.
Journal of Analytical and Applied Pyrolysis – Elsevier
Published: Mar 1, 2003
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera