Abstract: A method for recovering argon and hydrogen simultaneously from a feed mixture comprising argon, hydrogen, methane, nitrogen, ammonia, and moisture by passing a two stage adsorption separation (PSA). The feed gas including 4-6% hydrogen is sent to the first stage PSA to obtain a product hydrogen during the first period of adsorption step, and to obtain an intermediate product of argon and hydrogen mixture during the next period of adsorption step. The adsorbed gases are evacuated and sent to fuel gas. The intermediate product argon and hydrogen mixture is sent to the second stage adsorption bed. The effluent of adsorption step is recovered as another product hydrogen. After the adsorption step, the second stage adsorber is undergone concurrent blowdown, pressure equalization, argon recovery, argon purge, desorption production of argon, pressure equalization, pressurization with product hydrogen. Through such cyclic operation of two-stage PSA, high purity argon and hydrogen are recovered simultaneously.

Abstract: The present invention is an apparatus and method for preferentially adsorbing carbon monoxide from a gas stream containing carbon monoxide in the presence of water and potentially ammonia while not adsorbing methane, hydrogen or carbon dioxide which may be present in the gas stream using an adsorbent of a supported cuprous compound situated downstream serially from a pretreatment adsorbent of 3A zeolite which protects the cuprous compound from water. An additional pretreatment layer of a basic metal compound to protect the acid-unstable 3A zeolite layer is also contemplated.

Abstract: A combination developer/absorber package for use in a diazo copy machine. The package includes a hollow package body having a vapor permeable top and bottom. A vessel of liquid ammonia is nested inside the interior of the package body and has an opening which is closed by a stopper having two bores formed therethrough. Supply and exhaust tubes extend through the bores and into the vessel for quick connection with the supply and exhaust lines of the diazo copy machine. A quantity of ammonia vapor absorbent material is disposed inside the package body between the vessel of liquid ammonia and the side wall of the container body. The package sits on top of a blower unit operatively associated with the machine so that warmed, ammonia vapor laden air passes through the absorbent material.

Abstract: A gas mixture comprised of nitric oxide and, optionally an inert gas, and containing small amounts of nitrogen dioxide, and perhaps moisture and sulfur dioxide, is purified by passing the gas stream through a bed of metal cation-free alumina-deficient zeolites of types Y or ZSM-5. The concentrations of nitrogen dioxide, sulfur dioxide and moisture in the gas stream are reduced to about 1 ppm or less as the gas mixture passes through the bed of zeolite.

Abstract: Reaction rates in chemisorption reactions involving solid reactants and gaseous ligands are improved by maintaining optimized solid density throughout the reaction. Methods and apparatus which restrict volumetric solid expansion, compression of the solid reactant, and mixture with inert solid porous or particulate materials are disclosed.

Abstract: The invention disclosed herein relates to an apparatus for being detachably connected to a chemical or refrigeration system for selectively receiving and dispensing a gaseous refrigerant or chemical from and to that system, respectively, including a vessel having a chamber capable of maintaining a pressurized gas therein, gas inlet means for directing the gas: to and from the chamber, and connection means for connecting the gas inlet to a refrigeration or chemical system; a plurality of heat exchange conduits exposed in the chamber for directing heat exchange fluid therethrough and fluid inlet and outlet means communicating exteriorly of the vessel for directing the fluid to and from the conduits, respectively; and a solid adsorbent capable of alternately adsorbing and desorbing the gaseous refrigerant or chemical and positioned in thermal communication with each of the heat exchange conduits.

Abstract: In this method and this apparatus exit gases to be purified from kiln installations are first of all dedusted in a first filter stage and then in at least one further filter stage they are purified of the NH.sub.x compounds and/or volatile pollutant elements and compounds with at least partial reduction of NO.sub.x with the aid of a carbonaceous filter medium. In order that the filter dust precipitated in the first filter stage can without problems either be re-used in a suitable manner of deposited in simple refuse dumps, the proportion of low-boiling pollutants and pollutant compounds in this precipitated filter dust is reduced by successive method steps in which the said pollutants are evaporated out of the filter dust, the quantities of dust are precipitated out of these vapors and the dedusted vapours are passed through a filter unit containing a carbonaceous filter medium.

Abstract: The invention relates to a method for producing ceramic composites obtained by oxidation of a parent metal to form a polycrystalline ceramic material by providing a filler having a coating of a silicon source on at least a portion of the filler different in composition from the primary composition of the filler, said silicon source possessing intrinsic doping properties. A body of molten parent metal, adjacent a mass of the filter material, reacts with an oxidant to form an oxidation reaction product which infiltrates the adjacent mass of filler, thereby forming the ceramic composite.