04/02266 A light hydrocarbon fuel processor producinghigh-purity hydrogen

<p>Light hydrocarbons are treated as a by-product of the petrochemical industry. They are clean and inexpensive fuels that not only less pollute the environment but also save valuable energy. Through the analysis of light hydrocarbon fuel development status, people now use light hydrocarbon for gasiﬁcation combustion. This usage requires high quality of light hydrocarbon and strict safety. The feasibility of using light hydrocarbon gas as fuel to replace diesel in oil boilers has been proposed for the current industrial boilers in China, and the sources of light hydrocarbon fuels and the safety of such alternative technologies have been speciﬁcally described. We believe such replacement can effectively reduce the dependency of the international oil market. </p>

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Light hydrocarbon fuel and its gasification method and apparatus

Fuel and Energy Abstracts ◽

10.1016/s0140-6701(02)80346-0 ◽

2002 ◽

Vol 43 (1) ◽

pp. 34

Keyword(s):

Hydrocarbon Fuel ◽

Light Hydrocarbon

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Short Stack Performance of Intermediate Temperature - Operating Solid Oxide Fuel Cells with Hydrocarbon Fuel Processor

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.1338 ◽

2007 ◽

Vol 539-543 ◽

pp. 1338-1343 ◽

Cited By ~ 1

Author(s):

J. Bae ◽

H. Jee ◽

J. Kim ◽

Yung Sung Yoo

Keyword(s):

Single Cells ◽

Cost Effective ◽

Space Velocity ◽

Hydrocarbon Fuel ◽

Solid Oxide ◽

Intermediate Temperature ◽

Oxide Fuel ◽

Fuel Processor ◽

Thin Electrolyte Layer ◽

Temperature Operating

For intermediate temperature operation, we chose an anode-supported, planar type SOFC (Solid Oxide Fuel Cell) design considering mass production with use ferritic stainless steels as cost-effective interconnects. Anode-supported single cells with thin electrolyte layer of YSZ(Yttria-Stabilized Zirconia) were fabricated and short stacks were built and evaluated. We also developed diesel and methane autothermal reforming(ATR) reactors in order to provide fuels to SOFC stacks. Influences of the H2O/C(steam to carbon ratio), O2/C(oxygen to carbon ratio) and GHSV(Gas Hourly Space Velocity) on performances of stacks have been investigated. Performance of the stack operated with a diesel reformer was lower than with using hydrogen as a fuel due to lower Nernst voltage and carbon formation at anode side. The stack operated with a natural gas reformer showed similar performances as with using hydrogen. Effects of various reformer parameters such as H2O/C and O2/C were carefully investigated. We found O2/C is a sensitive parameter to control stack performance.

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A study into the feasibility of using the oxygen-hydrocarbon engine 11D58M as a basis for development of a high-performance multifunctional gas-generatorless rocket engine with oxygen cooling

Space engineering and technology ◽

10.33950/spacetech-2308-7625-2019-2-67-80 ◽

2019 ◽

pp. 67-80

Author(s):

Boris A. Sokolov ◽

Nikolay N. Tupitsyn

Keyword(s):

Film Cooling ◽

High Performance ◽

Rocket Engine ◽

Hydrocarbon Fuel ◽

Gas Generator ◽

Automatic Equipment ◽

The Us ◽

Upper Stage ◽

Pump Assembly ◽

Turbo Pump

The paper presents results of engineering studies and research and development efforts at RSC Energia to analyze and prove the feasibility of using the mass-produced oxygen-hydrocarbon engine 11D58M with 8.5 ton-force thrust as a basis for development of a high-performance multifunctional rocket engine with oxygen cooling and 5 ton-force thrust, which is optimal for upper stages (US), embodying a system that does not include a gas generator. The multi-functionality of the engine implies including in it additional units supporting some functions that are important for US, such as feeding propellant from US tanks to the engine after flying in zero gravity, autonomous control of the engine automatic equipment to support its firing, shutdown, adjustments during burn and emergency protection in case of off-nominal operation, as well as generating torques for controlling the US attitude and stabilizing it during coasting, etc. Replacing conventional engine chamber cooling that uses high-boiling hydrocarbon fuel with the innovative oxygen cooling makes it possible to get rid of the internal film cooling circuits and eliminate their attendant losses of fuel, while the use of the oxygen gasified in the cooling circuit of the chamber to drive the turbo pump assembly permits to design an engine that does not have a gas generator. Key words: Multifunctional rocket engine, oxygen cooling, gas-generatorless design, upper stage.

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