scholarly journals The Influence of Process Conditions on the Chemical Composition of Pine Wood Catalytic Pyrolysis Oils

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
J. Pereira ◽  
F. A. Agblevor ◽  
S. H. Beis
Keyword(s):  
Sodium Hydroxide ◽  
Catalytic Pyrolysis ◽  
Zeolite Catalysts ◽  
Process Conditions ◽  
Pyrolysis Products ◽  
Pine Wood ◽  
Aldehydes And Ketones ◽  
Pyrolysis Oils ◽  
Long Chain ◽  
Sodium Hydroxide Treatment

Pine wood samples were used as model feedstock to study the properties of catalytic fast pyrolysis oils. The influence of two commercial zeolite catalysts (BASF and SudChem) and pretreatment of the pine wood with sodium hydroxide on pyrolysis products were investigated. The pyrolysis oils were first fractionated using column chromatography and characterized using GC-MS. Long chain aliphatic hydrocarbons, levoglucosan, aldehydes and ketones, guaiacols/syringols, and benzenediols were the major compounds identified in the pyrolysis oils. The catalytic pyrolysis increased the polycyclic hydrocarbons fraction. Significant decreases in phthalate derivatives using SudChem and long chain aliphatics using BASF catalyst were observed. Significant amounts of aromatic heterocyclic hydrocarbons and benzene derivatives were formed, respectively, using BASF and SudChem catalysts. Guaiacyl/syringyl and benzenediols derivatives were partly suppressed by the zeolite catalysts, while the sodium hydroxide treatment enriched phenolic derivatives. Zeolite catalyst and sodium hydroxide were employed together; they showed different results for each catalyst.

scholarly journals Effects of ZnCl2 on the distribution of aldehydes and ketones in bio-oils from catalytic pyrolysis of different biomass

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 5666-5678
Author(s):  
Bo-Zheng Li ◽  
Dong-Mei Bi ◽  
Qing Dong ◽  
Yong-Jun Li ◽  
Ya-Ya Liu ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Value Added ◽  
Walnut Shell ◽  
Corn Straw ◽  
Pine Wood ◽  
Rape Straw ◽  
Bio Oil ◽  
Chestnut Shell ◽  
Aldehydes And Ketones ◽  
Fuel Source

Bio-oil can serve as an alternative fuel source or resource to extract high value-added chemicals. This paper focuses on the effect of six types of biomass (rape straw, corn straw, walnut shell, chestnut shell, camphor wood, and pine wood) and ZnCl2 catalyst on the bio-oil yield and chemicals in the bio-oil, including aldehydes, ketones, and four high-value chemicals (1-hydroxy-2-butanone, propionaldehyde, 5-HMF, 2(5H)-furanon). The results showed that the yields of bio-oil decreased when the ZnCl2 was the catalyst. The ZnCl2 promoted the production of aldehydes and ketones. The higher contents of aldehydes and ketones were obtained from camphor and pine wood, at 58.9 wt% and 42.0 wt%, respectively. The ZnCl2 catalyst exhibited an active influence on the production of 1-hydroxy-2-butanone, propionaldehyde, 5-HMF, and 2(5H)-furanon. Compared with the non-catalytic pyrolysis, the content of 1-hydroxy-2-butanone and 2(5H)-furanone in bio-oil increased by 936% and 612%, respectively. The contents of propionaldehyde and 5-HMF in catalytic bio-oil were the highest from rape straw and increased by 193% and 86%, respectively.

Study on the Chemical Modification Process of Jute Fiber

TAPPI Journal ◽  
2010 ◽  
Vol 9 (2) ◽  
pp. 23-29 ◽  
Author(s):  
Wei-ming Wang ◽  
Zai-sheng Cai ◽  
Jian-yong Yu
Keyword(s):  
Sodium Hydroxide ◽  
Sodium Silicate ◽  
Treatment Time ◽  
Jute Fiber ◽  
Process Conditions ◽  
Silicate Concentration ◽  
Sodium Hydroxide Concentration ◽  
Liquor Ratio ◽  
Degumming Process ◽  
Selection Of

Degumming of pre-chlorite treated jute fiber was studied in this paper. The effects of sodium hydroxide concentration, treatment time, temperature, sodium silicate concentration, fiber-to-liquor ratio, penetrating agent TF-107B concentration, and degumming agent TF-125A concentration were the process conditions examined. With respect to gum decomposition, fineness and mechanical properties, sodium hydroxide concentration, sodium silicate concentration, and treatment time were found to be the most important parameters. An orthogonal L9(34) experiment designed to optimize the conditions for degumming resulted in the selection of the following procedure: sodium hydroxide of 12g/L, sodium silicate of 3g/L, TF-107B of 2g/L, TF-125A of 2g/L, treatment time of 105 min, temperature of 100°C and fiber to liquor ratio of 1:20. The effect of the above degumming process on the removal of impurities was also examined and the results showed that degumming was an effective method for removing impurities, especially hemicellulose.

Effects of mixture of CO2 /CH4 as pyrolysis atmosphere on pine wood pyrolysis products

2020 ◽  
Vol 162 ◽  
pp. 1243-1254
Author(s):  
Bang Xu ◽  
Morris D. Argyle ◽  
Xiufeng Shi ◽  
Alexander K. Goroncy ◽  
Asif Hasan Rony ◽  
...  
Keyword(s):  
Pyrolysis Products ◽  
Pine Wood ◽  
Wood Pyrolysis

scholarly journals Catalytic pyrolysis of pine wood over char-supported Fe: Bio-oil upgrading and catalyst regeneration by CO2/H2O

Fuel ◽  
2022 ◽  
Vol 307 ◽  
pp. 121778
Author(s):  
Shasha Liu ◽  
Gang Wu ◽  
Syed Shatir A. Syed-Hassan ◽  
Bin Li ◽  
Xun Hu ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Catalyst Regeneration ◽  
Pine Wood ◽  
Bio Oil

scholarly journals IMPROVEMENT OF THE TRANSESTERIFICATION PARAMETERS USING BLENDS: OIL CRUDE FISH OIL AND FRYING OIL

2018 ◽  
Vol 15 (30) ◽  
pp. 696-703
Author(s):  
H. D. CHIRINOS ◽  
J. A. BARRA ◽  
D. D. CRUZ ◽  
G. M. HUALLPAMAYTA
Keyword(s):  
Fatty Acids ◽  
Fish Oil ◽  
Kinematic Viscosity ◽  
Methyl Esters ◽  
International Standards ◽  
Process Conditions ◽  
Maximum Value ◽  
Acidity Index ◽  
Conversion Performance ◽  
Long Chain

To improve the parameters of the transesterification process by the basic route for the production of biodiesel, crude fish oil (AP), obtained from the viscera of fish, and residual vegetable oils (AR) blenders were used. Because the AP contains high percentages of long chain polyunsaturated fatty acids that are responsible for its instability is that it was mixed with increasing percentages of AR. This translated into a higher conversion performance to biodiesel by the basic route, also depending on the level of free fatty acids. The index of methyl esters obtained from the blends and the original oils was analyzed. The calculation of the performance of each reaction is made based on the produced esters. The analysis is complemented by measuring the kinematic viscosity of the blends and the pure oils, as well as the biodiesel produced. The results showed yields higher than 90% when using the process of transesterification of the blends by the basic route. The standardization of blends by its acidity index is of great importance reaching a maximum value of 3.5 mg KOH/g. On the other hand, the viscosity of the biodiesel produced, from the blends, is kept within international standards; In addition, the process conditions are improved.

Catalytic Pyrolysis of Seawater Aged Polypropylene Over HZSM-5, HY, and Al-MCM-41

2021 ◽  
Vol 21 (7) ◽  
pp. 3971-3974
Author(s):  
Young-Kwon Park ◽  
Muhammad Zain Siddiqui ◽  
Sangjae Jeong ◽  
Eun-Suk Jang ◽  
Young-Min Kim
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Aromatic Hydrocarbons ◽  
Catalytic Pyrolysis ◽  
Decomposition Temperature ◽  
Gas Chromatography Mass Spectrometry ◽  
Catalyst Poisoning ◽  
Pyrolysis Products ◽  
Thermogravimetric Analyzer ◽  
Mcm 41

The effect of seawater aging on the thermal and catalytic pyrolysis of polypropylene (PP) was investigated using a thermogravimetric analyzer and pyrolyzer-gas chromatography/mass spectrometry. Although the surface properties of PP were of the oxidized form by seawater aging, the decomposition temperature and non-catalytic pyrolysis products of PP were relatively unchanged largely due to seawater aging. The catalytic pyrolysis of seawater-aged PP over all the catalysts produced smaller amounts of aromatic hydrocarbons than that of fresh PP due to catalyst poisoning caused by the residual inorganics. Among the catalysts, microporous HZSM-5 (SiO2/Al2O3:23) produced the largest amount of aromatic hydrocarbons followed in order by microporous HY(30) and nanoporous Al-MCM-41(20) from seawater-aged PP due to the high acidity and appropriate pore size for the generation of aromatic hydrocarbons.

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