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OwnerGreg NATERER, Zhaolin WANG +1inventors
InventorsGreg NATERER, Zhaolin WANG, Edward SECNIK
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A process and a device are described for producing high purity and high temperature steam from non-pure water which may be used in a variety of industrial processes that involve high temperature heat applications. The process and device may be used with technologies that generate steam using a variety of heat sources, such as, for example industrial furnaces, petrochemical plants, and emissions from incinerators. Of particular interest is the application in a thermochemical hydrogen production cycle such as the Cu—Cl Cycle. Non-pure water is used as the feed-stock in the thermochemical hydrogen production cycle, with no need to adopt additional and conventional water pre-treatment and purification processes. The non-pure water may be selected from brackish water, saline water, seawater, used water, effluent treated water, tailings water, and other forms of water that is generally believed to be unusable as a direct feed-stock of industrial processes. The direct usage of this water can significantly reduce water supply costs.
A high temperature thermochemical process for hydrogen production, the thermochemical process comprising:
A device for use in a high temperature industrial process where heat recovery is required and high temperature steam is produced which comprises using a tube and shell heat exchanger, the tube is arranged to receive a high temperature molten or gaseous material obtained from the high temperature industrial process and the shell is arranged to receive non-pure water to which heat is transferred from the high temperature molten or gaseous material in the tube, which then generates high temperature steam from the non-pure water, with the impurities in the non-pure water being reduced to a precipitate, a slurry or a concentrated aqueous solution, which can be disposed of, or subjected to further processing.
A device for use in a high temperature industrial process where heat recovery is desired and high temperature steam is produced, comprising a two-stage steam generation loop which comprises two heat exchangers, each having a central tube and surrounding shell, the first-stage heat exchanger arranged for high temperature molten or gaseous material to pass through its central tube and the surrounding shell is arranged to receive a secondary thermal fluid to circulate in the surrounding shell to absorb heat from the high temperature molten or gaseous material, the surrounding shell being in fluid communication with the shell in the second-stage heat exchanger to permit circulation of the heated thermal fluid from one shell to the other and back again to the shell in the first-stage heat exchanger;
Dependencies are inferred from the claim text.