Abstract:
PROBLEM TO BE SOLVED: To permit concentration measurement of especially those substances of a feed gas mixture for a partial oxidation which are relevant with regard to safety in respect of ignition basically with such a high accuracy that this measurement does not show a limiting element with regard to a safely useable composition range of feed gas, and at the same time to dispense with an expensive method limited with regard to feasibility in terms of safety.SOLUTION: This invention relates to a method for safe operation of a continuously operated heterogeneously catalyzed gas-phase partial oxidation of an organic compound in a reactor, the composition of the feed gas mixture being controlled by pressure-controlled concentration determination of relevant constituents.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for preventing an oxidation reactor from being fed with a feed gas mixture whose composition is an explosive one in a continuously operated heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound in the oxidation reactor whose feed gas mixture comprises, in addition to the at least one organic compound to be partially oxidized and molecular oxygen as an oxidizing agent, at least one diluent gas substantially inert under the conditions of a heterogeneously catalyzed gas-phase partial oxidation. SOLUTION: In a method for safely operating the heterogeneously catalyzed gas-phase partial oxidation of at least one organic compound in the oxidation reactor, an explosion diagram for the feed gas mixture is stored in a computer while serving as the basis of a cut-off mechanism. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
L'invention concerne un procédé de séparation en continu d'un produit X sous la forme d'un cristallisat finement divisé formé d'une phase liquide P contenant le produit cible X et des composants différents du produit cible X par cristallation en suspension de refroidissement dans l'espace secondaire parcouru en continu par la phase liquide P d'un échangeur de chaleur indirect dans le cadre du passage continu simultané à travers l'espace primaire de l'échangeur de chaleur indirect par un agent réfrigérant ainsi que du retrait continu d'une suspension de cristallisat S, présentant un degré de cristallisation Y, de l'espace secondaire, dans lequelle le réglage du degré de cristallation Y se fait sur la base d'un bilan thermique réalisé en continu à l'aide d'un ordinateur.
Abstract:
Target product separation involves utilizing a heat exchanger, which has a space and another space. Heat flow is gathered from the heat exchanger for adjusting desired crystallization degree of suspension, guided outwards from the latter space of the heat exchanger to each operating point. Difference between crystallization heat flow arithmetically developed in the latter space corresponding to the crystallization degree. The difference formed between the heat flow from the latter space of the heat exchanger is determined with the help of a process computer.