Air Products and Chemicals, Inc.

Gas Research Institute

Augustine Ivanhoe Dalton

Shivaji Sircar

Madhu Anand

Charles E Baukal, Jr

Ronald Charles Naddeo

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.

Recovery of volatile organic compounds from gas streams

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.

Growing community of inventors

Macungie, PA, United States of America

Augustine Ivanhoe Dalton