scholarly journals Effect of torrefaction on biomass structure and hydrocarbon production from fast pyrolysis

2015 ◽  
Vol 17 (4) ◽  
pp. 2406-2417 ◽  
Author(s):  
S. Neupane ◽  
S. Adhikari ◽  
Z. Wang ◽  
A. J. Ragauskas ◽  
Y. Pu
Keyword(s):  
Chemical Composition ◽  
Oxygen Content ◽  
Fast Pyrolysis ◽  
Hydrocarbon Production ◽  
Biomass Structure

Torrefaction has been shown to improve the chemical composition of bio-oils produced from fast pyrolysis by lowering its oxygen content and enhancing the aromatic yield.

STUDY ON THE BIODEGRADATION OF OIL SPILLED ON THE SEA

1997 ◽  
Vol 1997 (1) ◽  
pp. 989-990 ◽  
Author(s):  
Zhao Jianqiang ◽  
Zhu Junhuang
Keyword(s):  
Chemical Composition ◽  
Dissolved Oxygen ◽  
Oxygen Content ◽  
Oxygen Demand ◽  
Nutrient Elements ◽  
Factors Affecting ◽  
Major Factors ◽  
Spilled Oil

ABSTRACT Three major factors affecting the biodegradation of spilled oil (chemical composition of spilled oil, dissolved oxygen content in water, and nutrient elements for microorganisms) were analysed. The sequences of biodegradation rates of some hydrocarbon compounds are summarized. The oxygen demand for biodegradation of 1 g of hydrocarbons was derived as 3 to 4 g. The maximum ratio of carbon (C), nitrogen (N), and phosphorus (P) that microorganisms need was suggested as C:N:P = 100:7:0.14.

Effects of Oxygen Content on the Properties of Ultra-High-Temperature Resistant Si-Al-C Fibers

2008 ◽  
Vol 368-372 ◽  
pp. 1774-1777 ◽  
Author(s):  
Da Fang Zhao ◽  
Xiao Dong Li ◽  
Hao Wang ◽  
Chun Man Zheng ◽  
Hai Zhe Wang
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Oxygen Content ◽  
Melt Spinning ◽  
C Fibers ◽  
Co Gas ◽  
Ultra High Temperature

Ultra-high-temperature resistant Si-Al-C fibers derived from polyaluminocarbosilane were prepared by the procedures of melt-spinning, air curing and heated at 1800°C. It was found that oxygen content in the cured fibers has great influences on the chemical composition of the Si-Al-C fibers and its crystalline behavior during sintering. When oxygen content of cured fibers was too high, crystallite grains in the fiber would grow up. Oxygen evolvement in the fiber during the preparation was studied in detail by chemical analysis. It was found that oxygen is liberated mainly as CO gas from 1300°C to1600°C.

scholarly journals Producing Bio-Oil from Coconut Shell by Fast Pyrolysis Processing

2018 ◽  
Vol 237 ◽  
pp. 02001 ◽  
Author(s):  
Dewi Selvia Fardhyanti ◽  
Megawati ◽  
Cepi Kurniawan ◽  
Retno Ambarwati Sigit Lestari ◽  
Bayu Triwibowo
Keyword(s):  
Energy Source ◽  
Renewable Energy ◽  
Chemical Composition ◽  
Pyrolysis Temperature ◽  
Fast Pyrolysis ◽  
Coconut Shell ◽  
Condensation Process ◽  
Steam Condensation ◽  
Bio Oil ◽  
Pyrolysis Reactor

The utilization of biomass as a source of new and renewable energy is being carried out. One of the technologies to convert biomass as an energy source is pyrolysis which is converting biomass into more valuable products, such as bio–oil. Bio–oil is a liquid which produced by steam condensation process from the pyrolysis of coconut shell. The composition of biomass such as hemicellulose, cellulose and lignin will be oxidized to phenol as the main content of the bio–oil. Production of bio–oil from coconut shell was investigated via fast pyrolysis reactor. Fast pyrolysis was carried out at 500 °C with a heating rate of 10 °C and 1 hour holding time at pyrolysis temperature. The Bio-oil chemical composition was investigated using GC–MS. Percentage value of phenol, 2–methoxy phenol, 3–methoxy 1,2–benzenediol, and 2,6–dimethoxy phenol was 45.42%, 13.37%, 10.09%, and 11.72% respectively.

Chemical Composition of Bio-oils Produced by Fast Pyrolysis of Two Energy Crops†

2008 ◽  
Vol 22 (3) ◽  
pp. 2104-2109 ◽  
Author(s):  
Charles A. Mullen ◽  
Akwasi A. Boateng
Keyword(s):  
Chemical Composition ◽  
Fast Pyrolysis ◽  
Energy Crops

scholarly journals In-Situ Catalytic Fast Pyrolysis of Pinecone over HY Catalysts

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1034
Author(s):  
Jaehun Jeong ◽  
Hyung Won Lee ◽  
Seong Ho Jang ◽  
Sumin Ryu ◽  
Young-Min Kim ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Fast Pyrolysis ◽  
Decomposition Temperature ◽  
Hydrocarbon Production ◽  
Catalytic Fast Pyrolysis ◽  
Main Decomposition ◽  
Monoaromatic Hydrocarbons ◽  
Additional Role

The in-situ catalytic fast pyrolysis of pinecone over HY catalysts, HY(30; SiO2/Al2O3), HY(60), and 1% Ni/HY(30), was studied by TGA and Py-GC/MS. Thermal and catalytic TGA indicated that the main decomposition temperature region of pinecone, from 200 to 400 °C, was not changed using HY catalysts. On the other hand, the DTG peak heights were differentiated by the additional use of HY catalysts. Py-GC/MS analysis showed that the efficient conversion of phenols and other oxygenates formed from the pyrolysis of pinecone to aromatic hydrocarbons could be achieved using HY catalysts. Of the HY catalysts assessed, HY(30), showed higher efficiency in the production of aromatic hydrocarbons than HY(60) because of its higher acidity. The aromatic hydrocarbon production was increased further by increasing the pyrolysis temperature from 500 to 600 °C and increasing the amount of catalyst due to the enhanced cracking ability and overall acidity. The use of 1% Ni/HY(30) also increased the amount of monoaromatic hydrocarbons compared to the use of HY(30) due to the additional role of Ni in enhancing the deoxygenation and aromatization of reaction intermediates.

Effect of Oxygen Content in a Tank Gas Space with Sulfurous Oil on the Rate of Pyrophoric Deposit Formation and Chemical Composition

2014 ◽  
Vol 50 (7-8) ◽  
pp. 475-479
Author(s):  
I. I. Reformatskaya ◽  
A. N. Podobaev ◽  
I. I. Ashcheulova ◽  
I. R. Begishev ◽  
N. A. Zasedateleva ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Oxygen Content ◽  
Deposit Formation ◽  
Effect Of Oxygen ◽  
Gas Space

Chemical composition of acid–base fractions separated from biooil derived by fast pyrolysis of chicken manure

2009 ◽  
Vol 100 (24) ◽  
pp. 6524-6532 ◽  
Author(s):  
Dharani D. Das ◽  
Morris I. Schnitzer ◽  
Carlos M. Monreal ◽  
Paul Mayer
Keyword(s):  
Chemical Composition ◽  
Fast Pyrolysis ◽  
Chicken Manure ◽  
Acid Base

Degassing Behavior and Solid State Reaction of Nano-Ti(CN) Base Cermets in Sintering

2008 ◽  
Vol 368-372 ◽  
pp. 1104-1106 ◽  
Author(s):  
Shu Zhu Zhou ◽  
Ye Xia Qin ◽  
Chun Lei Wan ◽  
Kai Qi Liu ◽  
Long Hao Qi ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Solid State ◽  
Liquid Phase ◽  
Nitrogen Content ◽  
Oxygen Content ◽  
Solid State Reaction ◽  
Sintering Temperature ◽  
Total Carbon ◽  
Two Phases

The chemical composition and solid state reaction of the nano-Ti(CN) base cermets in different sintering temperature were studied. The total carbon and oxygen content in compact were declined gradually with the increasing of sintering temperature, the nitrogen content in compact began to decline above 1100°C, the peak of de-gassing of N2 was formed before the emergence of liquid phase, the decomposition of N2 was arisen acutely above 1500°C. Mo2C and TaC diffused and took part in solid state reaction with Ti(CN) above 900°C, the solid state reaction was finished below 1200°C. WC diffused and took part in solid state reaction with Ti(CN) above 1100°C, it was dissolved below 1250°C, there were only two phases, Ti(CN) and Ni(Ni+Co), in the alloy.

Sign in / Sign up

Export Citation Format

Share Document