摘要:
The present invention provides an improved method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.
摘要:
La présente invention concerne un procédé de destruction des peroxydes d'acétone. Les peroxydes d'acétone sont des produits dangereux, susceptibles de provoquer des explosions, lorsqu'ils sont à l'état solide. Plus précisément l'invention consiste en un procédé de destruction des peroxydes d'acétone présents dans un mélange réactionnel issu, notamment de la synthèse du phénol, de diphénols ou de dérivés du phénol, caractérisé en ce que : - l'on amène le pH dudit mélange réactionnel à une valeur de 4 à 8, - l'on ajoute audit mélange un composé du cuivre - et l'on maintient ledit mélange à une température de 50°C à 150°C.
摘要:
The invention is directed to a process using a composition comprising at least one type of ionic liquid and at least one metal ion in separation processes, in particular separation processes wherein olefins and paraffins are separated.
摘要:
The present invention provides a method and apparatus for the separation of an olefin from a fluid containing one or more olefins. The separation is accomplished by contacting the fluid with an absorbing solution containing specified copper(I) complexes. The present invention also encompasses a method and apparatus for the formation, in situ, of unstable copper(I) complexes from copper(II) analogues and metallic copper.
摘要:
Ethylene and propylene are recovered from a mixture thereof with other hydrocarbons by : (a) feeding the mixture to a separation zone with a top and a bottom; (b) feeding to the top above the mixture an aqueous complexing solution to form Cu(I) complexes of ethylene and propylene; (c) feeding below the mixture ethylene to strip propylene from the propylene complex; (d) removing from the bottom below the stripping gas a first liquid stream containing the Cu (I) ethylene complex; (e) recovering ethylene from the Cu(I) complex using reduced pressure and/or elevated temperature; (f) removing from the separation zone between the gaseous mixture and the complexing solution, a second liquid stream comprising Cu (I) propylene complex; (g) recovering propylene from the Cu(I) complex and producing a liquid recycle stream comprising copper (I) salt; and (h) recycling the liquid recycle stream from step (g) to the separation zone.
摘要:
A process for separating monoolefins from other monoolefins comprising contacting a mixture of different monoolefins with a complexing agent selected from the group consisting of copper (I) salts of sulfonic acids and copper (I) salts of dialkyl phosphates and a suitable hydrocarbon solvent for the complexing agent under such conditions that the monoolefins form different strength complexes with the complexing agent. The different strength of the complexes provides a mechanism by which even closely boiling monoolefin isomers may be separated.