Patent DE-202006002181-U1 (DE)
Title: Device for treatment of process- or industrial wastewater, comprises an evaporator in which a tube bundle-heat exchanger is intended, whose pure distillate-side is connected with a separating apparatus
IPC: C02F1/04
Filed: 2006-02-11
Abstract: The device for treatment of process- or industrial wastewater, comprises an evaporator (4) in which tube bundle-heat exchanger (5) is intended, whose pure distillate-side is connected with a separating apparatus for the separation of the distillate from floating organic phase or suchlike free liquid components. The separating apparatus and tube bundle-heat exchanger are arranged and/or detour-free connected with one another. The liquid level in the separating apparatus and in the evaporator changes into one another in same level. The device for treatment of process- or industrial wastewater, comprises an evaporator (4) in which tube bundle-heat exchanger (5) is intended, whose pure distillate-side is connected with a separating apparatus for the separation of the distillate from floating organic phase or suchlike free liquid components. The separating apparatus and tube bundle-heat exchanger are arranged and/or detour-free connected with one another. The liquid level in the separating apparatus and in the evaporator changes into one another in same level. A compressor condenses the pure steam from the evaporator at atmospheric pressure. The evaporator is intended for the evaporation by means of mechanical vapor compression. A temperature sensor is arranged in a suction line and/or a pressure line of the compressor. A distillate line is arranged in the suction line of the compressor for separating distillates from the apparatus. A control valve is inserted in the distillate line and is arranged for cooling the compressor in control connection with the temperature sensor. The control valve is an openable proportional valve as a function of the temperature seized by the temperature sensor. A level control is arranged in the separating apparatus, which opens a pressure discharge valve when falling below a liquid level and closes the pressure discharge valve when exceeding the liquid level. The pressure discharge valve is inserted into a pressure discharge line, which is coming from the evaporator. A guiding inlet opening is arranged in the evaporator for the pressure discharge valve. The separating apparatus is connected with the evaporator sump via a pipe line and the inlet opening of the pipe line is arranged with an interval underneath the upper maximum liquid level for separating the organic phase or such floating free liquid components. The pressure discharge line connected with the tube bundle-heat exchanger is led via recuperator (3) or suchlike heat exchanger, which is connected with an outlet opening guiding to the evaporator for cooling the inert gases and the non-condensed, volatile steam portions. A coalescence stage and/or an activated charcoal filter are downstream to the recuperator or suchlike heat exchanger. A temperature sensor downstream to the line section is intended in the recuperator or suchlike heat exchanger. During the exceeding of a determined maximal value the distillation releases the delivery of the residues from the evaporator.