Chemical waste treatment

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 10/00 (2006.01) B01D 53/40 (2006.01) B01D 53/78 (2006.01) B01J 12/00 (2006.01) B01J 19/26 (2006.01) A62D 3/00 (2006.01)

Patent

CA 2177151

A method for the treatment of chemical wastes, particularly recalcitrant wastes such as spent caustic from the oil, gas chemical and petrochemical industries, in which normally slow physical mass transfer of gases between phases, and other chemical reactions, such as carbonation, stripping and oxidation, are facilitated and speeded up. The result is more environmentally acceptable waste for disposal. It involves the mixing together in a reaction vessel (8) of the first waste fluid with a second fluid by using a mixing device, such as a jet compressor (5), designed to intimely mix the fluids together so as to provide a large surface area of the second fluid relative to the first. The process is applicable to the treatment of chemicals other than waste chemicals.

L'invention se rapporte à un procédé de traitement de déchets chimiques, particulièrement de déchets récalcitrants tels que les substances caustiques épuisées provenant des industries du pétrole, du gaz, chimiques et pétrochimiques, dans lequel on facilite et on accélère le transfert normalement lent de la masse physique des gaz entre les phases et d'autres réactions chimiques, telles que la carbonation, le strippage et l'oxydation. On obtient ainsi des déchets destinés à être jetés qui sont plus acceptables sur le plan de l'environnement. Le procédé consiste à mélanger ensemble dans une cuve de réaction (8) un premier fluide contenant les déchets et un second fluide en utilisant un dispositif mélangeur, tel qu'un compresseur à injection (5) conçu pour mélanger intimement les fluides de manière à procurer une surface efficace du second fluide supérieure à celle du premier. On peut appliquer ce procédé au traitement de produits chimiques autres que les substances chimiques épuisées.

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