摘要:
An adsorbent comprising a zeolite having a pore diameter of not less than 4.5 angstroms and not more than 7.3 angstroms as a principal component, which can adsorb xenon under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures. In addition, a xenon adsorbing device comprising an adsorbent, a container of a vapor poorly-permeating material, which houses the adsorbent, and a joint part which joins the container to a xenon enclosure space, in which the adsorbent is communicated with the xenon enclosure space. Thereby, the present invention provides an adsorbent which recovers xenon directly from the used equipment in which xenon is enclosed with efficiency under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures, and a xenon adsorbing device using the adsorbent.
(a) on distille de l'air dans au moins un appareil de distillation d'air (8) de façon à produire un flux d'oxygène liquide contenant l'essentiel du krypton et du xénon de l'air, et l'on vaporise ce flux d'oxygène liquide ; (b) on effectue avec au moins une partie de l'oxygène gazeux obtenu dans l'étape (a) une oxydation partielle d'au moins un hydrocarbure, de façon à produire un gaz de synthèse contenant au plus 0,1 ppm mol. d'oxygène ; et (c) on élimine du gaz de synthèse les constituants autres que le krypton et le xénon.
摘要:
An adsorbent comprising a zeolite having a pore diameter of not less than 4.5 angstroms and not more than 7.3 angstroms as a principal component, which can adsorb xenon under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures. In addition, a xenon adsorbing device comprising an adsorbent, a container of a vapor poorly-permeating material, which houses the adsorbent, and a joint part which joins the container to a xenon enclosure space, in which the adsorbent is communicated with the xenon enclosure space. Thereby, the present invention provides an adsorbent which recovers xenon directly from the used equipment in which xenon is enclosed with efficiency under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures, and a xenon adsorbing device using the adsorbent.
摘要:
A method of supplying both an oxygen steelmaking process and an ironmaking process with oxygen, comprising separating oxygen from air by rectification of the air, supplying a first stream of oxygen from the rectification to the steelmaking process, supplying a second stream of oxygen from the rectification to the ironmaking process, wherein the first and second streams of oxygen are both withdrawn from essentially the same stage of the rectification and both contain from 97 to 98% by volume of oxygen and less than 100 parts per million of nitrogen.
摘要:
An adsorbent comprising a zeolite having a pore diameter of not less than 4.5 angstroms and not more than 7.3 angstroms as a principal component, which can adsorb xenon under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures. In addition, a xenon adsorbing device comprising an adsorbent, a container of a vapor poorly-permeating material, which houses the adsorbent, and a joint part which joins the container to a xenon enclosure space, in which the adsorbent is communicated with the xenon enclosure space. Thereby, the present invention provides an adsorbent which recovers xenon directly from the used equipment in which xenon is enclosed with efficiency under ordinary temperatures and pressures or under ordinary temperatures and low xenon partial pressures, and a xenon adsorbing device using the adsorbent.
摘要:
A method of supplying both an oxygen steelmaking process and an ironmaking process with oxygen, comprising separating oxygen from air by rectification of the air, supplying a first stream of oxygen from the rectification to the steelmaking process, supplying a second stream of oxygen from the rectification to the ironmaking process, wherein the first and second streams of oxygen are both withdrawn from essentially the same stage of the rectification and both contain from 97 to 98% by volume of oxygen and less than 100 parts per million of nitrogen.
摘要:
A method for the separation of at least one constituent gas from a gas mixture containing the at least one constituent gas and at least one other gas species is described, the method comprising the steps of: providing a stream of the gas mixture to a first membrane of a zeolite material under conditions of pressure and temperature such that the required gas is selectively adsorbed onto a first face of the zeolite material membrane and diffusion through the zeolite membrane towards a second face is promoted; retaining and containing the permeate gas emerging from said membrane second face and passing a retentate of said gas stream not passed through said zeolite membrane either back to the first face of the first zeolite membrane or to a first face of a second zeolite membrane; and, repeating said method steps until a content of the required gas in the gas mixture is reduced to a desired level.
摘要:
The invention relates to an equipment and a system for processing a gaseous mixture by permeation. The equipment of the invention includes m*n separation modules Pij, n and n being natural integers higher than or equal to 2, i being a natural integer from 1 to m, and j is a natural interger from 1 to n. Each of the separation modules Pij includes a permeate inlet Epij, the permeate inlet Ep11 of the separation module P11 corresponding to the F inlet for supplying the gaseous mixture into said equipment, a permeate outlet Spij and a retentate outlet Srij. Furthermore, the permeate outlet Spij is connected to the permeate inlet Epi+1j of the separation module Pi+1j, and the retentate outlet Srij is connected to the permeate inlet Epij+1 of the separation module Pij+1. The equipment does not use any intermediate recycling.
摘要:
Suivant ce procédé: (a) on distille de l'air dans au moins un appareil de distillation d'air (8) de façon à produire un flux d'oxygène liquide contenant l'essentiel du krypton et du xénon de l'air, et l'on vaporise ce flux d'oxygène liquide; (b) on effectue avec au moins une partie de l'oxygène gazeux (10) obtenu dans l'étape (a) une oxydation partielle (2) d'au moins un hydrocarbure (11), de façon à produire un gaz de synthèse contenant (12) au plus 0,1 ppm mol. d'oxygène; et (c) on élimine (6,7) du gaz de synthèse (13) les constituants autres que le krypton et le xénon.