Entegris, Inc.

Praxair Technology, Inc.

Advanced Technology Materials, Inc.

Joshua B Sweeney

Edward A Sturm

J Donald Carruthers

Shaun M Wilson

Melissa A Petruska

Thomas H Baum

James V McManus

Richard Fricke

Michael J Wodjenski

Roger W Day

Deepak Lumba

A system and method for recovering high value gas from a process stream, material or environment containing same, e.g., xenon by contacting gas from the process stream, material or environment with a carbon adsorbent effective to sorptively capture same, free of or with reduced concentration of fluid species present with the high value gas in the high value gas-containing gas in the process stream, material or environment. Other aspects of the disclosure include a radon detection method and product.

Recovery of Xe and other high value compounds

A particulate form carbon pyrolyzate adsorbent, having the following characteristics: (a) COcapacity greater than 105 cc/gram at one bar pressure and temperature of 273&#xb0; Kelvin; (b) COWorking Capacity greater than 7.0 weight percent; (c) COheats of adsorption and desorption each of which is in a range of from 10 to 50 kJ/mole; and (d) a CO/NHenry's Law Separation Factor greater than 5. The carbon pyrolyzate material can be formed from a polyvinylidene chloride-based polymer or copolymer, or other suitable resin material, to provide an adsorbent that is useful for carbon dioxide capture applications, e.g., in treatment of flue gases from coal-fired power generation plants.

Carbon pyrolyzate adsorbent having utility for CO2 capture and methods of making and using the same

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A durable carbon pyrolyzate adsorbent having reversible sorptive affinity for hydrogen sulfide, and including the following characteristics: (a) a bulk density as measured by ASTM D2854 in a range of from 0.55 g/cc adsorbent to 1.25 g/cc adsorbent; (b) an HS capacity in a range of from 140 cc HS/g adsorbent to 250 cc HS/g adsorbent, at normal conditions (1 atm, 293.15&#xb0; K); (c) an HS capacity in a range of from 1.0 cc HS/g adsorbent to 15.0 cc HS/g adsorbent, at partial pressure of 0.76 torr (101.3 Pa) (1000 ppm) of HS at 293.15&#xb0; K; and (d) a single pellet radial crush strength in a range of from 7 kilopond (kP) to 40 kilopond (kP) as measured by ASTM D4179. Such adsorbent is usefully employed for capture of hydrogen sulfide from gases containing same, such as HS-containing gas associated with flowable hydrocarbonaceous material in refining operations, biogas produced by biomass digesters, gas mixtures produced by fluid catalytic cracking (FCC) units, and effluents from power plants gasifying sulfur-containing coal in an integrated gasification combined cycle (IGCC) process.

Carbon adsorbent for hydrogen sulfide removal from gases containing same, and regeneration of adsorbent

Heterogeneous vapor phase oxidation and other reactions are carried out at the surface of a solid catalyst, with both gaseous reactants and the solid catalyst being dispersed in a recirculating liquid solvent. Reaction and product absorption are combined into a single processing step, with enhanced catalyst performance, and product selectivity and product yields, enhanced mass and heat transfer characteristics and reduced risk of forming explosive mixtures in the course of a particular reaction.

High efficiency heat and mass transfer for vapor phase heterogeneous

Growing community of inventors

Katonah, NY, United States of America

Joshua B Sweeney