Patent
Process for purifying a gas stream containing N2O as an impurity
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TLDR
In this article, Nitrous oxide (N2O) is separated from a gas stream using a faujasite zeolite adsorbent having an Si/Al ratio of 1-1.50 and containing less than 35% K, 1-99% Na and 1- 99% Ca.Abstract:
Nitrous oxide separation from gas comprises use of a faujasite zeolite adsorbent having a specified silicon-aluminum ratio and specified potassium, sodium and calcium cation contents. Nitrous oxide (N2O) is separated from a gas stream using a faujasite zeolite adsorbent having an Si/Al ratio of 1-1.50 and containing less than 35% K , 1-99% Na and 1-99% Ca . Preferred Features: The process also includes removal of one or more impurities selected from H2O, CO2, H2 and hydrocarbons, especially ethylene, propane and/or methane, the H2O and CO2 being removed using an activated alumina particle bed. Separation is carried out by TSA at -40 to +80 degrees C, using an adsorption pressure of 10 -10 Pa and/or a desorption pressure of 5 x 10 -10 Pa, especially atmospheric pressure. The adsorbent is regenerated at 50-250 degrees C.read more
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Method and apparatus for gas purification
TL;DR: In this paper, an adaption process for the removal of at least N2O from a feed gas stream that also contains nitrogen and possibly CO2 and water is described.
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Synthesis of low silicon sodium X zeolite
TL;DR: In this article, the ratio of components in the solutions used to make the hydrogel are such that the silica/alumina molar ratio is in the range of 2.25:1 to about 2.4:1, and the water to sodium oxide ratio is greater than about 60:1.
Patent
Method for removing n 2 o from a gaseous flow
TL;DR: In this article, a method for purifying a supply gaseous flow containing at least 5 vol. % of N2O and oxygen was proposed, in which a main adsorbent including at least one zeolite exchanged at more than 50% by one or more metal cations and having an N 2O adsorption capacity, as measured under 1 bar and at 200°C, was used.
Patent
Procede pour eliminer le n2o d'un flux gazeux
TL;DR: Procede de purification d'un flux gazeux d'alimentation contenant au moins 5 % en volume de N2O and de loxygene, dans lequel :(a) on met en contact le flux lookux avec un adsorbant principal, comprenant au mins une zeolite echangee a plus de 50% par un ou des cations metalliques and ayant une capacite d'adsorption du N 2O, mesuree a 1 bar and a 20 degres C
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Removal of carbon dioxide from gas streams
TL;DR: In this paper, carbon dioxide is removed from a gas stream by passing the gas stream through a bed of natural or synthetic clinoptilolite or their chemically modified derivatives, which is particularly advantageous when applied to the removal of ppm levels of carbon dioxide from gas streams at temperatures above 20° C.
Patent
PSA process for removal of nitrogen oxides, carbon dioxide and water from gas
TL;DR: In this article, Nitrogen oxides, as well as water and carbon dioxide, are removed from gas streams containing at least 0.2 ppm by volume of nitrogen oxides by passing the gas steam through an alumina adsorbent and a zeolite adaption, preferably 13X-zeolite.
Patent
Method and device for avoiding enrichment of undesired components in a liquid medium
TL;DR: In this article, a method for avoiding enrichment of undesired components in a liquid medium is described, where the components are separated off adsorptively, and the adsorbent is loaded with undesirable components up to equilibrium.
Patent
Verfahren zur Entfernung von Distickstoffoxid aus Wasserstoff, Stickstoffmonoxid und Distickstoffoxid enthaltenden Gasen
Frans van Deyck,Franz-Josef Dr Weiss,Roger Verberckt,Erwin Thomas,Benedikt Mangelschots,Paul Pijl +5 more
TL;DR: Verfahren zur Entfernung von Distickstoffoxid aus Wasserstoff, Stickstoffmonoxid und Dioxid enthaltenden Gasen, wobei man die zu behandelnden Gase mit Molekularsieben behandelt as mentioned in this paper.