Apparatus and method for improved hydrate formation and...

A - Human Necessities – 24 – B

Patent

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A24B 3/18 (2006.01)

Patent

CA 2352662

An apparatus and a method for recovering additional expansion agent in a process for the expansion of tobacco or another agricultural product are disclosed. One embodiment is a method for recovering additional expansion agent in a process for the expansion of tobacco or another agricultural product, the process having a multi-step depressurization sequence including at least first and second depressurization steps for depressurizing an impregnation vessel, which includes the following steps: withdrawing substantially all of an amount of an expansion agent in the impregnation vessel at about the end of the second depressurization step during the multi- step depressurization sequence; and transmitting at least a portion of said amount of expansion agent to a low-pressure gas tank. In one embodiment, the expansion agent is carbon dioxide.

L'invention concerne un appareil et un procédé permettant de récupérer un excédent d'agent d'expansion dans un procédé d'expansion du tabac ou autre produit agricole. Selon un premier mode de réalisation, l'invention concerne un procédé permettant de récupérer un excédent d'agent d'expansion agent au cours d'un procédé d'expansion du tabac ou autre produit agricole, ledit procédé comprenant une phase de dépressurisation en plusieurs étapes comportant au moins une première et une seconde étapes de dépressurisation permettant de dépressuriser un bac d'imprégnation. Ledit procédé consiste alors à retirer la quasi totalité de l'agent d'expansion du bac d'imprégnation à la fin de la seconde étape de la phase de dépressurisation en plusieurs étapes; et à transférer au moins une partie de cette quantité d'agent d'expansion à un réservoir de gaz basse pression. Selon un mode de réalisation, l'agent d'expansion est du dioxyde de carbone.

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