E.i. Dupont De Nemours and Company

Other

Engelhard-clal

Peter Gideon Gelblum

Charles Joseph Noelke

Norman Herron

John James Barnes

Velliyur Nott Mallikarjuna Rao

Richard D Lanam

David Archer Wells

Joseph Gerard Biondo

William H Manogue

Ioannis V Bletsos

Robert E Trotter

Tiberiu M Leib

Tae Hoon Kim

Jitendra P Agrawal

Hashim M Badat

Thomas R Keane

Velliyur Nott Mall Rao

A gold-lined pyrolysis reactor is used to pyrolyze compounds to form fluoroolefins like tetrafluoroethylene and hexafluoropropylene in high yield, with minimum to no formation of perfluoroisobutylene, chlorotrifluoroethylene, coke, salts, or polymer.

Synthesis of perfluoroolefins

A layered article having a curved surface made of a supporting metal metallurgically bonded to a supported metal.

Metallurgically bonded layered article having a curved surface

The present invention relates to the co-pyrolysis of fluoroform and chlorodifluoromethane to form a mixture of useful fluoroolefin and saturated HFCs, notably, tetrafluoroethylene and hexafluoropropylene and CF CHF and CF CHFCF , respectively.

Disposal of fluoroform (HFC-23)

A process for nondestructive heating and supplying of ammonia feed gas wherein high quality ammonia (typically greater than 90% and as high as 99%) is preserved at temperatures well in excess of the conventional limit of 230&deg; C. (typically from 400 to 700&deg; C.) by controlling the selection of metal surfaces in contact with the hot gas, the bulk temperature of the gas, the wall temperature, the pressure, the contact time, and the spatial surface density. Such hot gases are particularly useful for the manufacture of hydrogen cyanide.

Process for the nondestructive heating and supply of hot ammonia or hot ammonia containing feed gas

Hydrofluorocarbon production using heat carriers in high temperature

The manufacture of hydrogen cyanide by the catalytic reaction of air/oxygen, ammonia and a hydrocarbon gas employing an improved catalytic reaction zone comprising a sequential array of layers/piles in which the surface density of the catalyst in layers/piles decreases from the entrance to the exit of the catalytic reaction zone.

Catalyst for ammonia conversion to HCN

A distillation process for the preparation of purified concentrated BDO. High boiling impurities, including color formers, precursors of color formers and tar formers are removed from the BDO early in the process and under mild conditions.

Preparation of purified concentrated BDO

Process for regenerating spent acid is improved by using oxygen-enriched air for combustion, recycling stack gases, and preheating spent acid and air fed to the furnace.

Process for sulfuric acid regeneration

Growing community of inventors

Philadelphia, PA, United States of America

Peter Gideon Gelblum