Charles E. Baukal - Harleysville PA Augustine I. Dalton - Macungie PA
Assignee:
Gas Research Institute - Chicago IL
International Classification:
F23M 304
US Classification:
431 10
Abstract:
A method for reducing the formation of nitrogen oxides (NO. sub. x) in air-fuel and oxygen-enriched air-fuel burners is disclosed wherein oxygen is introduced directly into the visible flame of the burner, whereby the beneficial effects of oxygen enrichment and the reduced formation of NO. sub. x can be realized simultaneously in the operation of such burners.
Recovery Of Volatile Organic Compounds From Gas Streams
Madhu Anand - Allentown PA Shivaji Sircar - Wescosville PA Augustine Ivanhoe Dalton - Macungie PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
B01D 53047
US Classification:
95 99
Abstract:
A condensable component present at low concentration in a feed gas mixture containing the condensable component and a noncondensable component is recovered by selective adsorption from the feed gas mixture in an adsorption step, the resulting adsorbed condensable component is desorbed by a heated purge gas in a regeneration step to yield a purge gas effluent enriched in desorbed condensable component, and the purge gas effluent is cooled to condense and recover the condensable component as a liquid. An improvement comprises, during a time period of the regeneration step in which the concentration of the condensable component in the purge gas effluent reaches a maximum value, (a) dividing the purge gas effluent into a first and a second portion, (b) cooling the first portion of the purge gas effluent to a temperature sufficient to condense substantially all of the condensable component present therein and recovering the resulting condensate therefrom, and (c) cooling a second portion of the purge gas effluent and combining the resulting cooled gas stream with the feed gas mixture to yield a total feed mixture for the adsorption step.
Method For The Recovery Of Salts Of Group Viii Noble Metals From Solutions
Augustine I. Dalton - Allentown PA Ronald W. Skinner - Allentown PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
C01G 5500
US Classification:
423 22
Abstract:
Salts of Group VIII noble metals are recovered from neutral or acidic solutions by admixing with the solution up to 10% by weight of hydrogen peroxide, adsorbing the salt of the Group VIII noble metal from the peroxide-containing solution on activated carbon and separating activated carbon containing the adsorbed Group VIII noble metal salts from solution diminished in concentration thereof.
Cathodic Protection Of Catalysts In A Corrosive Environment
Augustine I. Dalton - Allentown PA Ronald W. Skinner - Allentown PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
C23F 1300
US Classification:
204147
Abstract:
Dissolution of Group VIII supported metal catalysts from semi-conductive or conductive carriers in liquid media containing a strong inorganic acid is stopped by making the Group VIII noble metal cathodic with respect to an anode placed in the reactor. A representative embodiment is in processes for synthesis of hydrogen peroxide from its elements.
Augustine I. Dalton - Allentown PA Ronald W. Skinner - Allentown PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
C01B 1502
US Classification:
423584
Abstract:
Hydrogen peroxide is synthesized by contacting hydrogen and oxygen with a supported palladium catalyst in the presence of methanol. Preferably, the methanol contains up to 1. 0% by weight of formaldehyde and is at least 0. 0001 N in hydrochloric acid.
Process For Removing Oxygen From Mixed Gas Streams Using A Swing Adiabatic Absorption-Isothermal Desorption Cycle
Augustine I. Dalton - Allentown PA John J. Sheridan - Somerville NJ David A. Zagnoli - Fleetwood PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
B01D 5304
US Classification:
55 26
Abstract:
An adiabatic-isothermal swing absorption process is disclosed for the removal of essentially all oxygen contained in an inert gas stream. The oxygen is absorbed from an inert gas stream adiabatically on to a dioxygen absorbent and then desorbed from the absorbent isothermally by the use of external heat. The process method utilizes at least two switching beds of the dioxygen absorbent in which one bed is in an absorbing mode while the other bed is in a desorbing mode.
Chrysanthemyl alcohol is selectively oxidized to the corresponding aldehyde by contact with oxygen-containing gas in the presence of supported noble metal catalyst composed of platinum on carbon. The obtained aldehyde may be further converted to chrysanthemic acid by oxidation with a solid inorganic oxidizing agent such as silver oxide in excess of stoichiometric quantity, or by reaction with a catalytic amount of oxidation promoting catalyst such as silver oxide in the presence of cupric oxide and molecular oxygen.
Stabilization And Regeneration Of Activated Carbon Supported Palladium Chloride Catalysts In The Oxidation Of Vinyl Halides
Augustine I. Dalton - Allentown PA Shivaji Sircar - Wescosville PA
Assignee:
Air Products and Chemicals, Inc. - Allentown PA
International Classification:
B01J 2732 B01D 5334
US Classification:
252416
Abstract:
PdCl. sub. 2 /C catalyst which has been deactivated in the oxidation of an olefinic halide or olefinic hydrocarbon present as contaminant in air or other inert oxygen-containing gas stream, is regenerated by prolonged exposure to air or other oxygen-containing gas stream at temperatures below 70. degree. C. and preferably below 60. degree. C.