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Title: Solar-Thermal Fluid-Wall Reaction Processing

Abstract

The present invention provides a method for carrying out high temperature thermal dissociation reactions requiring rapid-heating and short residence times using solar energy. In particular, the present invention provides a method for carrying out high temperature thermal reactions such as dissociation of hydrocarbon containing gases and hydrogen sulfide to produce hydrogen and dry reforming of hydrocarbon containing gases with carbon dioxide. In the methods of the invention where hydrocarbon containing gases are dissociated, fine carbon black particles are also produced. The present invention also provides solar-thermal reactors and solar-thermal reactor systems.

Inventors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
894271
Patent Number(s):
U.S. Patent No. 7,033,570 B2
Application Number:
TRN: US200701%%287
Assignee:
NREL
DOE Contract Number:
AC36-99-GO10337
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
08 HYDROGEN; 14 SOLAR ENERGY; 42 ENGINEERING; CARBON BLACK; CARBON DIOXIDE; DISSOCIATION; GASES; HYDROCARBONS; HYDROGEN; HYDROGEN SULFIDES; INVENTIONS; PROCESSING; SOLAR ENERGY; SOLAR-THERMAL; FLUID-WALL REACTION PROCESSING; THERMAL DISSOCIATION; RAPID-HEATING; Solar Energy - Photovoltaics

Citation Formats

Weimer, A. W., Dahl, J. K., Lewandowski, A. A., Bingham, C., Raska Buechler, K. J., and Grothe, W. Solar-Thermal Fluid-Wall Reaction Processing. United States: N. p., 2006. Web.
Weimer, A. W., Dahl, J. K., Lewandowski, A. A., Bingham, C., Raska Buechler, K. J., & Grothe, W. Solar-Thermal Fluid-Wall Reaction Processing. United States.
Weimer, A. W., Dahl, J. K., Lewandowski, A. A., Bingham, C., Raska Buechler, K. J., and Grothe, W. Tue . "Solar-Thermal Fluid-Wall Reaction Processing". United States. doi:.
@article{osti_894271,
title = {Solar-Thermal Fluid-Wall Reaction Processing},
author = {Weimer, A. W. and Dahl, J. K. and Lewandowski, A. A. and Bingham, C. and Raska Buechler, K. J. and Grothe, W.},
abstractNote = {The present invention provides a method for carrying out high temperature thermal dissociation reactions requiring rapid-heating and short residence times using solar energy. In particular, the present invention provides a method for carrying out high temperature thermal reactions such as dissociation of hydrocarbon containing gases and hydrogen sulfide to produce hydrogen and dry reforming of hydrocarbon containing gases with carbon dioxide. In the methods of the invention where hydrocarbon containing gases are dissociated, fine carbon black particles are also produced. The present invention also provides solar-thermal reactors and solar-thermal reactor systems.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Apr 25 00:00:00 EDT 2006},
month = {Tue Apr 25 00:00:00 EDT 2006}
}
  • The present invention provides a method for carrying out high temperature thermal dissociation reactions requiring rapid-heating and short residence times using solar energy. In particular, the present invention provides a method for carrying out high temperature thermal reactions such as dissociation of hydrocarbon containing gases and hydrogen sulfide to produce hydrogen and dry reforming of hydrocarbon containing gases with carbon dioxide. In the methods of the invention where hydrocarbon containing gases are dissociated, fine carbon black particles are also produced. The present invention also provides solar-thermal reactors and solar-thermal reactor systems.
  • In an embodiment, a method of conducting a high temperature chemical reaction that produces hydrogen or synthesis gas is described. The high temperature chemical reaction is conducted in a reactor having at least two reactor shells, including an inner shell and an outer shell. Heat absorbing particles are included in a gas stream flowing in the inner shell. The reactor is heated at least in part by a source of concentrated sunlight. The inner shell is heated by the concentrated sunlight. The inner shell re-radiates from the inner wall and heats the heat absorbing particles in the gas stream flowingmore » through the inner shell, and heat transfers from the heat absorbing particles to the first gas stream, thereby heating the reactants in the gas stream to a sufficiently high temperature so that the first gas stream undergoes the desired reaction(s), thereby producing hydrogen or synthesis gas in the gas stream.« less
  • The invention provides a system and method for controlling the storing and release of thermal energy from a thermal storage wall wherein said wall is capable of storing thermal energy from insolation of solar radiation. The system and method includes a device such as a plurality of louvers spaced a predetermined distance from the thermal wall for regulating the release of thermal energy from the thermal wall. This regulating device is made from a material which is substantially transparent to the incoming solar radiation so that when it is in any operative position, the thermal storage wall substantially receives allmore » of the impacting solar radiation. The material in the regulating device is further capable of being substantially opaque to thermal energy so that when the device is substantially closed, thermal release of energy from the storage wall is substantially minimized. An adjustment device is interconnected with the regulating mechanism for selectively opening and closing it in order to regulate the release of thermal energy from the wall.« less
  • The invention provides a system and method for controlling the storing and elease of thermal energy from a thermal storage wall wherein said wall is capable of storing thermal energy from insolation of solar radiation. The system and method includes a device such as a plurality of louvers spaced a predetermined distance from the thermal wall for regulating the release of thermal energy from the thermal wall. This regulating device is made from a material which is substantially transparent to the incoming solar radiation so that when it is in any operative position, the thermal storage wall substantially receives allmore » of the impacting solar radiation. The material in the regulating device is further capable of being substantially opaque to thermal energy so that when the device is substantially closed, thermal release of energy from the storage wall is substantially minimized. An adjustment device is interconnected with the regulating mechanism for selectively opening and closing it in order to regulate the release of thermal energy from the wall.« less