Showing papers on "Gas separation published in 1973"

Process for the removal of hydrogen sulfide and mercaptans from liquid and gaseous streams

Abstract: A contactor defining a substantially cylindrical reaction chamber; a gas feed inlet at the bottom of the reaction chamber; a liquid aqueous catalyst solution inlet at the bottom of the reaction chamber; means for forming an intimate unstable dispersion short of foam formation of gaseous oxygen, hydrogen sulfide, and alkyl mercaptans entering via the gas feed inlet in liquid aqueous catalyst solution and for passing the dispersion in turbulent flow concurrently upwardly through the reaction chamber; and a gas separator for reception of dispersion from the reaction chamber and defining a substantially cylindrical gas separation chamber directly above the reaction chamber, coextensive therewith in a central portion and having a peripheral portion extending circumferentially about and beyond the peripheral portion of the reaction chamber, the gas separation chamber having an overall diameter larger than the diameter of the reaction chamber and exposing a relatively large surface area of dispersion to a gas layer thereabove within the gas separation chamber to facilitate breaking of the dispersion into a lower liquid layer and separation of gas therefrom, the gas separator having in an upper portion a gas outlet for removal of the gas in the gas layer and, at or below the level of the liquid layer, a liquid outlet for liquid aqueous catalyst solution containing sulfur and dialkyl disulfides, and means for maintaining a liquid level within the gas separation chamber and thereby within the reaction chamber by overflow; the ratio of the diameter of the reaction chamber to the diameter of the gas separator chamber being within the range from about 1:1.2 to about 1:20, expressed in metric units, the length of the reaction chamber being within the range from about 2 feet to about 20 feet, and the diameter of the reaction chamber being within the range from about 4 inches to about 40 feet, the ratio of diameter to height of the gas separation chamber being within the range from about 60:1 to about 1:1, the height of the gas separation chamber being within the range from about 2 inches to about 10 feet, and the diameter of the gas separation chamber being within the range from about 5 inches to about 60 feet.

Recirculating gas separation means for submersible oil well pumps

Abstract: This abstract describes an improvement in down hole submersible oil pumps for pumping oil and gas mixtures, which includes a section in which the well fluid is given a helical motion within a first outer annular separation chamber, such that there is a physical separation between liquid on the outside and gas on the inside. The liquid passes onto a succeeding stage of impeller, while the gas and some liquid is returned to the first impeller stage through a second inner annular recycle chamber. The gas is vented from the inner chamber to the outside of the pump housing, while the liquid portion is recirculated through the first impeller.

Process for separating a material from a mixture of mixture which comprises employing a solid water-insoluble, hydrophilic, semi permeable membrane

Abstract: Novel gas separation film membranes are made by grafting alpha-olefinic, polymerizable monomers having hydrophilic functional groups and having, e.g., about from 2 to about 12 carbon atoms, to nylon, and forming a film from the resulting copolymers. A complex-forming metal component which is active in the presence of water is provided in the film. The invention also includes the process of separating components from gaseous mixtures using the membranes. Of particular interest is the separation of aliphatically-unsaturated hydrocarbons from mixtures, for example, the separation of ethylene from one or more of ethane, methane and hydrogen.

Electrolytic process for the production of metals in molten halide systems

Abstract: OF THE DISCLOSURE Metals are produced by electrolysis of their respective metal halides wherein the metals are deposited on one of a pair of spaced substantially parallel electrodes, the opposed surfaces of which are inclined at an angle of between 7° and 15° to the vertical, and wherein gas liberated in the inter-electrode space is discharged upwardly into a gas separation chamber disposed above the inter-electrode space.

Electrochemical gas electrode

Abstract: An improved electrochemical gas electrode and improved electrochemical fuel, gas detection and gas separation cells employing same as an anode therein, said improved electrode comprising a cohesive, gas-permeable conductive mass having a thin, gas-permeable hydrophobic film bonded to its gas-contacting surface, the conductive mass consisting essentially of 8-75 weight % of silicon and 25-92 weight % of one or more metals selected from vanadium, chromium, molybdenum, tungsten, manganese, iron, cobalt and nickel, said conductive mass optionally containing as a non-essential component up to 75 weight % of a conductive additive, based upon the combined weights of additive, silicon and metal, for example, carbon black or graphite.

Effects of steady‐state electrical discharge on the separation of gas constituents in helium‐argon mixture

Abstract: A study of gas separation (cataphoresis) has been made in the positive column of a steady‐state electric discharge, using the binary mixture 2.2% argon‐helium. A glow discharge is initiated in a 0.96‐m‐long tube of 9.5 mm diameter using a high‐voltage stabilized source. The discharge tube employs a brush anode and a brush cathode to obtain uniform discharge and is connected to a bakeable gas handling system. The discharge is scanned spectroscopically from anode to cathode and the emitted spectra of helium (5875) and argon (4152 A) are monitored. The cataphoresis separation of the constituents is studied with variation of both the gas pressure and the current flowing between the electrodes. It has been found that the ratio of Ar/He increases with increasing distance from anode to cathode. Furthermore, the quality of cataphoresis improves with increasing pressure and current in accordance with theoretical predictions. The effect of the temperature of the walls on the quality of cataphoresis is investigated and found to decrease with increasing temperature in agreement with theory and with Schmeltekopf's experimental study in helium‐neon mixtures.

Gas separating apparatus

Abstract: A gas separating apparatus is disclosed which includes a pair of gas separation areas which respectively include membranes having specific gas permeation coefficients. The gas permeation properties of the membranes are opposed to each other with respect to specific gases included in a gas mixture. Mixed gases are introduced into the gas separation areas and penetrate through different membranes resulting in gas separation. The separated gases are then exhausted separately through outlets respectively connected to collecting areas associated with corresponding membranes.