Properties of Synthetic Fuels Evaluated for Combustion Turbines

2009 ◽  
pp. 130-130-26
Author(s):  
CW Streed ◽  
PR Mulik ◽  
MJ Ambrose ◽  
A Cohn
Keyword(s):  
Author(s):  
V.A. Munoz ◽  
R.J. Mikula ◽  
C. Payette ◽  
W.W. Lam

The transformation of high molecular weight components present in heavy oils into useable liquid fuels requires their decomposition by means of a variety of processes. The low molecular weight species produced recombine under controlled conditions to generate synthetic fuels. However, an important fraction undergo further recombination into higher molecular weight components, leading to the formation of coke. The optical texture of the coke can be related to its originating components. Those with high sulfur and oxygen content tend to produce cokes with small optical texture or fine mosaic, whereas compounds with relatively high hydrogen content are likely to produce large optical texture or domains. In addition, the structure of the parent chemical components, planar or nonplanar, determines the isotropic or anisotropic character of the coke. Planar molecules have a tendency to align in an approximately parallel arrangement to initiate the formation of the nematic mesophase leading to the formation of anisotropic coke. Nonplanar highly alkylated compounds and/or those rich in polar groups form isotropic coke. The aliphatic branches produce steric hindrance to alignment, whereas the polar groups participate in cross-linking reactions.


1982 ◽  
Vol 32 ◽  
pp. 17-17
Author(s):  
Stephen R. Lefevre

Political scientists are increasingly interested in understanding policymaking in civilian, defense and space technologies. The answer to the question why this is, is found partly in the emergence of the policy field itself, and partly in the enormously expanded role that government stimulus of technological innovation is playing in the public and private sectors. A listing of some recent programs — breeder and fusion reactor R&D, the space shuttle, windmill farm demonstration programs, synthetic fuels programs, and dial-a-ride transportation systems — gives some indication of the scope of federal involvement, and points up some of the implications that this enlarged role has for the student of public policy. Why, for instance, has government elected to stimulate innovations in certain technologies and not others? Who are the key actors shaping the policymaking process in R&D? Are their gaps in federal efforts? Is the policy system responding effectively to needs for renewable energy sources, alternative home building materials, gasoline-efficient automobile engines, etc?


Author(s):  
Sonil Nanda ◽  
Falguni Pattnaik ◽  
Venu Babu Borugadda ◽  
Ajay K. Dalai ◽  
Janusz A. Kozinski ◽  
...  

Author(s):  
K. Сhevchenko ◽  
A. Grigorov ◽  
I. Sinkevich

The article proposes to determine the corrosion effect on fuel metals under dynamic conditions, when washing the prepared copper plate of a certain size, a significant amount of fuel at a certain speed and temperature of the study. This approach will significantly reduce the duration of the study (up to 100 minutes) and is closer to the real conditions of contact of the fuel with a metal surface, in comparison with the standardized method, which is widely used today. Using the proposed laboratory setup, the study was subjected to fuel (200–360 °C), which was obtained by thermal destruction of secondary polymer raw materials, in particular polypropylene. The obtained results showed that the investigated fuel, despite the temperature, the amount of circulating fuel and its water content, does not have a corrosive effect on the copper plate, which can be explained by the absence of corrosive substances in the fuel: water-soluble mineral acids and alkalis, active sulfur compounds and organic acids. However, it should be kept in mind that in polyolefin raw materials, in the form of contamination, there may be products made of other materials, such as rubber and polyvinyl chloride. This can happen when the sorting technology is violated or during the preliminary preparation of raw materials and, in turn, will contribute to the increase in sulfur-containing and chlorine-containing compounds in the fuel, which are characterized by high corrosion activity and should be necessarily removed from the fuel. Note that the fuel obtained from secondary polymer raw materials, in the absence of sulfur-containing and chlorine-containing compounds, is quite promising for the creation on its basis of modern synthetic fuels, analogues of classic petroleum products.


1981 ◽  
Vol 6 (1) ◽  
pp. 233-266 ◽  
Author(s):  
H Perry ◽  
H H Landsberg
Keyword(s):  

Science ◽  
1976 ◽  
Vol 193 (4255) ◽  
pp. 752-752
Author(s):  
ALLRN L. HAMMOND
Keyword(s):  

Membranes ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 101 ◽  
Author(s):  
Emma Palo ◽  
Annarita Salladini ◽  
Barbara Morico ◽  
Vincenzo Palma ◽  
Antonio Ricca ◽  
...  

The development of a chemical industry characterized by resource efficiency, in particular with reference to energy use, is becoming a major issue and driver for the achievement of a sustainable chemical production. From an industrial point of view, several application areas, where energy saving and CO2 emissions still represent a major concern, can take benefit from the application of membrane reactors. On this basis, different markets for membrane reactors are analyzed in this paper, and their technical feasibility is verified by proper experimentation at pilot level relevant to the following processes: (i) pure hydrogen production; (ii) synthetic fuels production; (iii) chemicals production. The main outcomes of operations in the selected research lines are reported and discussed, together with the key obstacles to overcome.


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