摘要:
The compact oxygen production system of the present invention provides an oxygen concentrator and a cryocooling device for liquefying the concentrated oxygen gas to provide liquid oxygen. The compact size of the system permits the system to be employed in home applications, especially for home oxygen patients.
摘要:
A mixture of noble gases having desirable insulative properties for use as a window fill gas is derived from an air separation process without substantial further separation or concentration of the noble gases in the mixtures. The mixture of noble gases is processed to form the fill gas using relatively economical catalytic oxidation processes and drying techniques to provide a suitable fill gas. The processed noble gas or fill gas may contain from about 89 to 95% krypton, 5 to 8% xenon and 0.5 to 2% contaminants including oxygen, nitrogen, hydrocarbons and other constituents typically found in air separation processing.
摘要:
The present invention relates to novel solid state mixed conductor membranes and their use for separating oxygen from oxygen-containing feeds at elevated temperatures. The membranes comprise a multicomponent metallic oxide of substantially cubic perovskite structure, stable in air over the temperature range of 25.degree.-950.degree. C., having no connected through porosity wherein the membrane is of a composition represented by the formula �A.sub.1-x A'.sub.x !�Co.sub.1-y-z B.sub.y B'.sub.z !O.sub.3-.delta., where A.tbd.Ca, Sr, Ba, and mixtures thereof; A'.tbd.La, Y, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U, and mixtures thereof; B.tbd.Fe, Mn, Cr, V, Ti, and mixtures thereof; B'.tbd.Cu, Ni, and mixtures thereof; .about.0.0001.ltoreq.x.ltoreq..about.0.1; .about.0.002.ltoreq.y
摘要翻译:本发明涉及新型固态混合导体膜及其在高温下从含氧原料中分离氧的用途。 膜包括基本上立方体钙钛矿结构的多组分金属氧化物,在空气中在25-950℃的温度范围内是稳定的,没有通过孔隙相连,其中膜是由式[A1-xA' x] [Co1-y-zByB'z] O3-δ,其中A 3BOND Ca,Sr,Ba及其混合物; A 3Al La,Y,Ce,Pr,Nd,Pm,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Yb,Lu,Th,U及其混合物; B 3 Fe,Mn,Cr,V,Ti及其混合物; B'3BOND Cu,Ni及其混合物; 差值0.0001 = x =差分0.1; 差异0.002 = y <0.05; 差值0.0005 = z =差分0.3; δ由金属的价态决定。
摘要:
The present invention relates to an electrochemical cell comprising a solid electrolyte which conducts O.sup.2- anions in contact with an anode and a cathode of identical or different composition, the solid electrolyte being comprised of a composition derived from Bi.sub.4 V.sub.2 O.sub.11 of which at least one of the constituent cationic elements is substituted by at least one substituting element such that the gamma phase structural type of Bi.sub.4 V.sub.2 O.sub.11 is maintained as well as the equilibrium of charges, at least one of the anode or of the cathode is a material containing at least one element of substitution of said composition derived from Bi.sub.4 V.sub.2 O.sub.11, that element being in a metallic or cationic state. The invention equally relates to the use of the electrochemical cell with a view towards the separation or extraction of oxygen.
摘要:
A portable compact ozone generator for producing a consistent source of ozone portably that eliminates nitrous oxides and nitric acid. The device includes a small air compressor that provides compressed ambient air to a pair of molecular sieves that eliminate humidity and concentrates oxygen to provide a source of dry oxygen to the ozone generator.
摘要:
This invention relates to a method of and apparatus for separating component gases in a gas mixture employing a glassy polymer membrane at temperatures of 5.degree. C. or less so as to achieve superior separation of gas components.
摘要:
The invention is a process for recovering oxygen from an oxygen-containing gaseous mixture containing one or more components selected from water, carbon dioxide or a volatile hydrocarbon which process utilizes ion transport membranes comprising a multicomponent metallic oxide containing barium. The process utilizes a temperature regime which overcomes problems associated with degradation of barium-containing multicomponent oxides caused by carbon dioxide.
摘要:
There are disclosed saltmen-type metallo Schiff base complexes and oxygen-sorbing and -desorbing solutions of the same, pressure- and temperature-swing oxygen separation processes using the complexes and solutions, and methods of regenerating such complexes and solutions.
摘要:
A process for producing a nitrogen-enriched product in improved yield and specific product comprising passing air through a bed of crushed zeolite having a particle size of 10 to 40 mesh, thereby adsorbing oxygen and producing the enriched nitrogen product.
摘要:
An inert gas stream containing parts per million levels of impurities such as O.sub.2, CO, CO.sub.2, H.sub.2, H.sub.2 O, is purified by passing the same sequentially through a first bed and second bed of material. In the first bed, carbon monoxide and hydrogen are both reacted with oxygen to form CO.sub.2 and H.sub.2 O. The latter is retained in this first bed while the reaction products and the inert gas stream are supplied to a second of material which is comprised of a getter. In this bed, oxygen reacts with the getter material and carbon dioxide is adsorbed therein so that the inert gas stream leaving the second bed is substantially free of such impurities. The first and second beds of material operate at temperatures up to about 38.degree. and these materials may be regenerated by heating the same to approximately 200.degree. C. and purging such beds with a purge gas flow.
摘要翻译:含有百万级杂质如二氧化碳,二氧化碳,二氧化碳,二氧化硫,二氧化硫等杂质的惰性气体流通过相同的顺序通过第一床和第二床材料而被净化。 在第一床中,一氧化碳和氢气都与氧反应形成CO 2和H 2 O. 后者保留在该第一床中,同时将反应产物和惰性气体流供应到由吸气剂组成的第二种材料。 在该床中,氧与吸气剂材料反应,并且二氧化碳被吸附在其中,使得离开第二床的惰性气体流基本上不含这些杂质。 第一和第二床材料在高达约38℃的温度下操作,并且这些材料可以通过将其加热至约200℃而再生,并用吹扫气流吹扫这些床。