scholarly journals Investigation of the role of feedstock properties and process conditions on the slow pyrolysis of biomass in a continuous auger reactor

Author(s):  
Filipe Rego ◽  
Huan Xiang ◽  
Yang Yang ◽  
Jorge López Ordovás ◽  
Katie Chong ◽  
...  
2018 ◽  
Vol 168 ◽  
pp. 08004
Author(s):  
Václav Peer ◽  
Jaroslav Frantík ◽  
Jan Kielar ◽  
Drahomír Mašek

Slow pyrolysis of solid materials can produce new materials usable for energy or chemical industry. The advantage of pyrolysis devices is the simple construction and process control and the ability to utilize materials with different properties (composition, ash content). Produced gaseous, liquid and solid materials could be used as a sources of energy, raw materials in chemical industry or substances for improving of soil properties. At article are described products of slow pyrolysis of biomass (wood chips), agrifuels (hay, wheat straw) and sewage sludge.


2020 ◽  
Vol 4 (12) ◽  
pp. 5987-6003 ◽  
Author(s):  
Tahereh Jalalabadi ◽  
Matthew Drewery ◽  
Priscilla Tremain ◽  
John Wilkinson ◽  
Behdad Moghtaderi ◽  
...  

This study deals with the modification of chars derived from different biomass samples (woody biomass, cellulose and lignin).


2002 ◽  
Vol os-11 (3) ◽  
pp. 1558925002OS-01
Author(s):  
Subhash Chand ◽  
Gajanan S. Bhat ◽  
Joseph E. Spruiell ◽  
Sanjiv Malkan

The role of fiber morphology in a thermal point bonding operation was investigated. Primary objectives were to understand the changes taking place in fiber structure due to applied heat and pressure, and the role of fiber morphology in determining optimum process conditions and properties of the webs. To study fibers with varying morphology, i.e., from partially drawn as in spunbonding to fully drawn as in staple fiber nonwovens, fibers with a wide range of crystallinity and orientation were spun and characterized, from two polypropylene resins. Thermally bonded carded webs were produced, using these fibers, and characterized in order to understand thermal bonding behavior of fibers with different morphology. The fibers with different morphology differed significantly in their bonding behavior. The fibers with higher molecular orientation and crystallinity tended to form a weak and brittle bond due to lack of polymer flow and fibrillation of the fibers in the bonded regions. In general, fibers with lower molecular orientation and lower crystallinity yielded stronger and tougher webs. Fibers with relatively less developed morphology also exhibited lower optimum bonding temperature. Morphological changes in fibers were observed during the thermal bonding process, in bonded as well as unbonded regions of the web. As a final step to see how the observations from staple-fiber study translate to one of the relevant processes during scale-up, spunbond studies were also conducted in a similar way.


1994 ◽  
Vol 4 (1) ◽  
pp. 1-13 ◽  
Author(s):  
Paul T. Williams ◽  
Patrick A. Horne

Author(s):  
Aiduan Li ◽  
Majeda Khraisheh

The emerging biofuel industry demands large amount of biomass feedstock. Although commercial ethanol has been produced from primary biomass sources such as corns, the global food crisis caused by the use of primary biomass has been raised. Thus, lignocellulosic biomass, known as second generation of biomass, has become a promising source for ethanol production. However, the more complex structure requires more advance technology. MSW with more than 60% of biodegradable composition, as one of the promising biomass sources has the potential benefits of replacing primary biomass and preventing environment from MSW pollution.In this paper, three major biodegradable municipal solid waste (BMSW) components: kitchen organic waste (KOW), green organic waste (GOW) and paper and card waste (PCW), are classified and characterised according to substrate composition, cellulose crystallinity, bulk density and particle size. The substrate composition indicates how much cellulose, lignin, hermicellulose each model waste has. The cellulose content shows the potential glucose/ethanol product yield. Other chemical composition such as lignin and hemicellulose indicates how easy of each model waste can be converted. These contents are also important information when selecting pretreatment methods and conversion process conditions in the following steps.Based on the comprehensive understanding of biomass structures and compositions, studies look into the effects of substrate properties (such crystallinity, presence of lignin and cellulose content on process performances during enzymatic hydrolysis adsorption. Results indicated how the adsorption process is affected by the substrate properties. This provides understanding of the role of substrate properties during enzyme-cellulose adsorption.


2021 ◽  
Vol 323 ◽  
pp. 00003
Author(s):  
Artur Bieniek ◽  
Wojciech Jerzak ◽  
Aneta Magdziarz

Biomass pyrolysis is an advanced process which leads to obtaining products as chars, primary tars and gases. Depending on pyrolysis conditions and reactor construction, the pyrolysis could be divided into three categories: slow, intermediate and fast. This work concerns the experimental analysis of an intermediate pyrolysis of biomass residues in a fixed bed reactor. As raw materials, pine bark and wheat straw were selected. Experiments were carried out at three temperatures: 400, 500 and 600 °C under constant volume flow rate of inert gas equal to 100 ml/min. Biomass samples were kept for 150 seconds in the hot zone. The main goal was to compare yields, elemental composition, and calorific values of received products under studied process conditions. The ultimate analysis of chars and organic fractions of oils was performed. Obtained results from ultimate analysis allowed to determine higher heating values by a theoretical correlation. The products of pyrolysis obtained at 600 °C characterized by the most energetic parameters. The higher heating value for organic fraction of tars was 31.62 MJ/kg while for char was 29.47 MJ/kg.


Sign in / Sign up

Export Citation Format

Share Document