Abstract:
Process and apparatus for enriching liquids with oxygen by means of a catalyst and a liquid which gives off oxygen under the effect of that catalyst. The process involves passing the oxygen-yielding liquid through a porous molding, in the pores of which the catalyst is incorporated in known manner, thereby giving off oxygen, the side of the porous molding which gives off a greater quantity of oxygen being in contact with the liquid to be enriched with oxygen. The oxygen-yielding liquid is passed through the porous molding under its own static pressure, or under the effect of the excess pressure built up in the container through the formation of oxygen. Preferred embodiments include use of a 0.1 to 5% solution of hydrogen peroxide as the oxygen-yielding liquid; using ruthenium oxide or hydroxide as the catalyst. The apparatus for carrying out the process includes a storage vessel containing the liquid which gives off oxygen under the effect of a catalyst, connecting means, and a porous molding connected thereby to the storage vessel and containing the catalyst, the molding being completely immersible in the liquid to be enriched with oxygen. Alternatively, the storage vessel and the porous molding can be dipped into the liquid to be enriched with oxygen, so that at least the entire molding is immersed. Preferred embodiments include the porous molding being a tube having at least one empty space extending over its entire length, one end tightly sealed and the other end tightly connected to the storage vessel; the porous molding being a hollow body having an empty space with an internal diameter of at least 0.5 mm extending over its entire length; the porous molding being of polypropylene, MgO, Al.sub.2 O.sub.3 or clay; use of a metering pump for adjusting the supply of oxygen-yielding liquid; and provision of a vent connected to the porous molding.
Abstract:
The present invention provides a low boiling point medium evaporator which generates low boiling point medium vapor in the mixture of two components with different boiling points by heating at the risers and mixes said heated two component mixture and said low boiling point medium liquid supplied from the outside of the system and has at least one device provided at the outlet portion of said risers and used both as a heat exchanger to generate saturated vapor of said low boiling point medium vapor by mixing said low boiling point medium liquid and the two phase flow comprised said low boiling point medium vapor and said mixture and passing said two phase flow through said low boiling point medium vapor and as a cyclone to separate said saturated vapor and said mixture.
Abstract:
A gas generator which is structurally and functionally integrated with a fluid heat exchanger. A liquid which is to be heated, vaporized, and used as pressurized gas is introduced into the integrated apparatus where the liquid absorbs heat from the adjacent, but separated, hot gas flow from the gas generator. Unlike the prior art, this integrated gas generator/fluid heat exchanger is useable to pressurize an oxidizer tank of a liquid engine missile.
Abstract:
An apparatus and method for generating on demand a gaseous product from a liquid phase reaction of one reactant in the solid phase at ambient room conditions and another reactant in the liquid phase at ambient room conditions. The reactants preferably are iodine crystals, and liquid tetrahydronaphthalene (THN), with the gaseous product being hydrogen iodide. The liquid phase reaction, in the preferred embodiment, is 2I.sub.2 +C.sub.10 H.sub.12 .fwdarw.4HI+C.sub.10 H.sub.8, known per se. Preferably, THN is pumped from a reservoir to be sprinkled over the iodine crystals in another reservoir. Some iodine dissolves into the liquid THN, with the resulting solution then percolating through a reaction zone containing a heated, porous packing material. Heat is transferred to the solution, thereby promoting, i.e., driving the above reaction. The gaseous hydrogen iodide is then removed from the reaction zone; typically for direct use, for example, in a chemical laser. The gaseous HI is generated at sufficiently high flow rates and/or partial pressures to be used in chemical lasers, eg., based on HF, HCl or HBr which operate at about 2700 nm, 3800 nm, and 4100 nm, respectively.
Abstract:
An improved catalytic gas generator, of the type used, for example, in a monopropellant hydrazine rocket engine includes a dynamic catalyst bed retention device. The dynamic retention device comprises a compression band surrounding a generally cylindrical catalyst bed that is axially restrained at both ends. A torsional force is applied to the compression band, which converts the torsional force into a radially inwardly directed compression force. As voids develop in the catalyst bed upon repeated impulsing, the inwardly directed compressive force redistributes the catalyst bed so as to fill the voids. The retention device thus allows the catalyst bed to perform at peak efficiency yielding a gas generator that can be repeatedly pulsed with uniformly reproducible results.
Abstract:
A cartridge for a gas generator of the type in which a liquid such as water is reacted with a solid fuel such as a base metal hydride comprises a canister which contains at least one compressible filler means which cooperates with the canister interior to define a fuel charge compartment. The canister has a plurality of fluid flow passages formed in it to place the fuel charge compartment in fluid flow communication with the exterior of the canister. Preferably, a pair of compressible filler means such as blocks of a synthetic polymeric foamed material are placed within the canister to define the fuel charge compartment between them. The fluid flow passages communicate with the fuel compartment so that upon immersion of the cartridge into a liquid the liquid flows through the passages to contact the fuel and react with it to form a gas. Fuels of this type expand upon such reaction and the compressible filler means are compressed by the expanding fuel to accommodate their increased volume sufficiently to prevent undue compression of the fuel to an extent which would unduly retard the penetration of the liquid into the body of the fuel charge. The canister is preferably lined with a fluid permeable material such as a fibrous paper to promote even distribution of the liquid about the fuel charge.
Abstract:
In a process for making chlorine electrolytically in which a build-up of nitrogen trichloride occurs in the bottoms of cooling apparatus, a method and apparatus is provided wherein the nitrogen trichloride is dissolved in an organic solvent such as carbon tetrachloride, the chlorine removed, and the solution treated to destroy the otherwise hazardous nitrogen trichloride. The solvent is then separated and recycled to avoid environmentally undesirable waste products.
Abstract:
A device for providing a non-toxic atmosphere for use in culturing anaerobic micro-organisms comprising: a closed envelope of inert material having a frangible portion which may be ruptured to allow the ingress of liquid; within the envelope a closed sachet, one part of which is formed of a gas- and liquid-permeable membrane; and material disposed within the sachet adjacent to the membrane for reacting with a liquid to generate the desired gaseous atmosphere.
Abstract:
A carbon dioxide absorbent cannister in underwater breathing apparatus of e forced recirculation type. The cannister includes a plurality of stackable condenser elements that serve to cool exhaled gas of high relative humidity so that water, necessary to the desired carbon dioxide removing reaction, is condensed from the gas. The condenser elements are characterized by a plurality of radial, blade-like legs, the outer ends of which are in heat transfer relation to the cannister wall, and by a conical diffuser disc that serves as a heat sink.
Abstract:
An improved chemical generation apparatus particularly adapted to the generation of chlorine dioxide. This apparatus includes a generation vessel having at least two reducing couplings attached thereto by leak-proof joints thereby forming at least one inlet and at least one outlet to said vessel. The reducing couplings advantageously have surfaces which form an angle of at least 110.degree. with the vessel walls to create a geometry which prevents chemical buildup during operation of the apparatus. The apparatus also has sources of supply for each of the reactive materials connected to said inlet of the vessel though a metering means and an injection check valve.