| Patent Number |
Title Of Patent |
Date Issued |
| 6503297 |
Adsorption processes |
January 7, 2003 |
| A process for separating a gas component from a gas mixture is disclosed. A gas mixture is passed through an adsorption zone which contains an adsorbent which will selectively adsorb a gaseous component from the gas mixture. The adsorption zone contains a layer of monolithic adsorbent an |
| 6409801 |
Activation processes for monolith adsorbents |
June 25, 2002 |
| An improved method for preparing and activating monolith adsorbents is disclosed. A regeneration gas is passed through the formed monolith adsorbent at a temperature sufficient to decompose at least part of the binding agents in the adsorbent. The present invention also provides for |
| 6364932 |
Cold gas-dynamic spraying process |
April 2, 2002 |
| The present invention provides an improved cold gas-dynamic spraying process utilizing a carrier gas and small-diameter particulates whereby the particulate-laden carrier gas is directed to a ceramic filter unit where the particulates are separated out and the particulate-free carrier |
| 6200366 |
Separation of alkenes and alkanes |
March 13, 2001 |
| Ethene is separated from a gas mixture containing ethane by a pressure swing adsorption process carried out at a temperature in the range of about 50 to about 200.degree. C., wherein the adsorption step of the process is conducted by passing the gas mixture through an adsorption zone |
| 6190436 |
Ozone purification process |
February 20, 2001 |
| An ozone-oxygen gas stream is introduced into feed side of a membrane separation unit containing an elastomeric polymer membrane. Ozone-enriched gas passes through the membrane to a permeate zone and is contacted with an ozone-reactive substance-containing gas stream in the permeate zone |
| 6125638 |
Optical fiber cooling process |
October 3, 2000 |
| Hot optical fiber being drawn from a preform is cooled in a helium cooled heat exchanger by a two-stage process. In the first stage, in which the rate of draw of fiber through the heat exchanger is increased to the design draw rate, the rate of flow of helium to the heat exchanger is |
| 6065306 |
Method and apparatus for purifying ammonia |
May 23, 2000 |
| Ammonia is purified by a membrane unit to concentrate ammonia and/or ammonia and moisture. Moisture is removed in a temperature-swing adsorption unit. The resultant product of such purification is then partially condensed to remove light components of other impurities and then partia |
| 6024781 |
Separation of carbon dioxide and hydrocarbons |
February 15, 2000 |
| Carbon dioxide is separated from gaseous hydrocarbons by a cyclic adsorption process using at a temperature in the range of about -50 to about 200.degree. C., wherein the adsorption step of the process is conducted by passing the gas mixture through an adsorption zone containing carb |
| 6017382 |
Method of processing semiconductor manufacturing exhaust gases |
January 25, 2000 |
| A method of processing semiconductor manufacturing exhaust gases for recovering at least hexafluoroethane in which a feed stream composed of the exhaust gases is passed through an adsorbent bed selected to adsorb oxygen, and also nitrogen if present, but not to appreciably adsorb the |
| 5344766 |
Process for the production of bioproteins |
September 6, 1994 |
| Proteins are prepared by the reaction of a hydrocarbon utilizing microbe on a low molecular weight hydrocarbon, such as methane, in an aqueous medium in the presence of oxygen and a fixable nitrogen compound in a recycle process in which unreacted hydrocarbon and oxygen are recycled to t |
| 5332036 |
Method of recovery of natural gases from underground coal formations |
July 26, 1994 |
| Methane is produced from a coal seam penetrated by an injection well and a gas production well by first introducing liquefied or gaseous carbon dioxide through the injection well and into the coal seam and subsequently introducing a weakly adsorbable gas through the injection well and in |
| 5262547 |
Process for the production of petrochemicals |
November 16, 1993 |
| Petrochemicals are produced by the vapor phase reaction of a hydrocarbon with substantially pure oxygen in the presence of a suitable catalyst. In the improved process, the principal product is removed, carbon monoxide, present in the reactor effluent as a byproduct, is oxidized to carbo |
| 5258056 |
PSA system with product turndown and purity control |
November 2, 1993 |
| Apparatus and process for the production of a purified product gas at a user specified product gas demand from a feed gas containing impurities which includes at least one treatment zone having an inlet and outlet region, a sensing device for detecting a change in product gas demand, a |
| 5229089 |
Recovery of flammable materials from gas streams |
July 20, 1993 |
| A process for separating methane from an oxygen-containing gas mixture which contains methane at a concentration greater than the upper explosive gas mixture limit by pressure swing adsorption without producing an explosive gas mixture. The process includes the steps of feeding the gas |
