摘要:
Alkali metals and sulfur may be recovered from alkali polysulfides in an electrolytic process that utilizes an electrolytic cell having an alkali ion conductive membrane. An anolyte solution includes an alkali polysulfide and a solvent that dissolves elemental sulfur. A catholyte solution includes alkali metal ions and a catholyte solvent. Applying an electric current oxidizes sulfur in the anolyte compartment, causes alkali metal ions to pass through the alkali ion conductive membrane to the catholyte compartment, and reduces the alkali metal ions in the catholyte compartment. Sulfur is recovered by removing and cooling a portion of the anolyte solution to precipitate solid phase sulfur. Operating the cell at low temperature causes elemental alkali metal to plate onto the cathode. The cathode may be removed to recover the alkali metal in batch mode or configured as a flexible band to continuously loop outside the catholyte compartment to remove the alkali metal.
摘要:
An apparatus and method for applying a beneficial agent to the skin is disclosed in one embodiment of the invention as including first and second chemical reactants, each being compatible with the skin. The first and second chemical reactants react with one another to generate a beneficial agent and enhance the permeability of the skin (e.g., by generating heat). The beneficial agent may then be applied to the skin while the permeability of the skin is enhanced. In selected embodiments, the first chemical reactant includes one or more metals, or alloys thereof, that are compatible (i.e., not harmful) with the skin. Similarly, in selected embodiments, the second chemical reactant may include water. In certain embodiments, the beneficial agent generated by the first and second chemical reactants includes an antioxidant such as hydrogen.
摘要:
Disclosed herein is an improved method for regenerating materials from a desulfurization/demetallation reaction. The desulfurization/demetallation reaction preferably has products including one or more of an alkali sulfide, polysulfide or hydrosulfide, or alkali earth sulfide, polysulfide, or hydrosulfide. The method includes the steps of reacting the desulfurization/demetallation products with a halogen, liberating and removing sulfur from the product, and then electrolyzing the halogenated products to separate the halogen from the alkali metal or alkali earth metal.
摘要:
A high-temperature, steam-selective membrane for adding steam to or removing steam from various types of chemical reactions is disclosed herein. In one embodiment, such a membrane includes a polymer layer (a Nafion or sulfonated PEEK polymer layer, for example) exhibiting high selectivity to the transport of steam relative to other gas species. The polymer layer is sandwiched between substantially rigid porous layers that are steam permeable. The rigid porous layers substantially immobilize the polymer layer and reduce the tendency of the polymer layer to shrink and/or expand in response to changes in temperature or humidity. The rigid porous layers may also retain water to keep the polymer layer moist. The physical support and moisture retention provided by the rigid porous layers enable the polymer layer to operate in a temperature range of about 100° C. to 500° C.
摘要:
An apparatus for administering a therapeutic is provided. In various embodiments, the apparatus includes a syringe having a barrel and a plunger and having an ozone generator associated therewith. The generator is initiated and a therapeutic gas is accumulated within the barrel, at which point it can be delivered from the barrel into a target site via a needle, thereby delivering therapeutic effects to that target site.
摘要:
A device and method for atomizing a liquid for delivery to a target zone are presented. The liquid atomization device may include a liquid reservoir to contain a liquid, and a liquid pathway to receive at least a portion of the liquid from the liquid reservoir. The liquid pathway may include one end communicating with the liquid reservoir, and another end communicating with a target zone. Two electrodes may be placed in the liquid pathway to accommodate the liquid therebetween. An AC power source may be connected to each of the electrodes to generate an alternating current through the liquid, thereby atomizing at least a portion of the liquid for delivery to the target zone.
摘要:
A selective catalytic reduction (SCR) system includes an on-board ammonia generation system that produces nitrogen from air and hydrogen from a source of a hydrogen-containing compound, and generates an ammonia product from the nitrogen and hydrogen to provide the ammonia product into an exhaust from a NOx generator to reduce the NOx in the exhaust. Oxygen from one or both of the nitrogen generator and the hydrogen generation cell can be supplied to the NOx generator for cleaner combustion or to a particulate filter for cleaning the filter. H2O from the NOx generator can at least partially provide a water source for the hydrogen generation cell.
摘要:
A process for treating flue gas containing fly ash and carbon dioxide is disclosed. In the process, carbon dioxide and fly ash are contacted with an aqueous metal hydroxide solution to convert carbon dioxide into a metal carbonate, and wherein the metal carbonate and the metal hydroxide cause the fly ash to undergo a geopolymerization reaction and form a geopolymerized fly ash. The geopolymerized fly ash is recovered for disposal or for further use, such as a concrete additive.
摘要:
Methods and apparatus for synthesizing biodiesel using an alkali ion donating material are disclosed. Generally, the methods include placing an alcohol and a triglyceride in a container having the alkali ion donating material. A biodiesel reaction driving force is applied to the contents of the container. This force may cause the ion donating material to release alkali ions that react with the alcohol to form an alkali alcoholate. In turn, the alkali alcoholate reacts with triglycerides to form biodiesel and an alkali salt of glycerine. When the driving force is removed and where the alkali ion donating material comprises a catalyst with a high affinity for alkali ions, the alkali ion in the alkali salt of glycerine returns to the alkali ion donating material. Accordingly, the apparatus and methods may produce substantially pure biodiesel and glycerine.
摘要:
Alkali alcoholates, also called alkali alkoxides, are produced from alkali metal salt solutions and alcohol using a three-compartment electrolytic cell. The electrolytic cell includes an anolyte compartment configured with an anode, a buffer compartment, and a catholyte compartment configured with a cathode. First and second separators are positioned between the anolyte compartment and the catholyte compartment to define a buffer compartment. The first and second separators are permeable to alkali ions. They may be fabricated of the same or different materials including, but not limited to, an alkali ion conducting solid electrolyte configured to selectively transport alkali ions, a porous ceramic, or a porous polymer separator material. The catholyte solution may include an alkali alcoholate and alcohol. The anolyte solution may include at least one alkali salt. The buffer compartment solution may include a soluble alkali salt and an alkali alcoholate in alcohol.