Instillo Gmbh

Synthesechemie Dr. Penth Gmbh

Mybiotech Gmbh

Felix Penth

Bernd Penth

Rudolf Krumbholz

Akif Emre Tuereli

Bernd Baumstuemmler

Max Penth

Bernd BAUMSTÜMMLER

Akif Emre TÜRELI

Daniel MÜLLER

The invention relates to an apparatus and method for the production of dispersions and solids by way of controlled precipitation, co-precipitation and self-organization processes in a microjet reactor, a jet of solvent containing at least one target molecule and a jet of nonsolvent colliding with each other, at specified pressures and flow rates, at a collision point in the reactor chamber of the microjet reactor, and the microjet reactor having a gas inlet for introducing gas into the reactor chamber and an educt outlet for discharging the educts in a stream of gas. This results in very rapid precipitation, co-precipitation or a chemical reaction, during the course of which micro- or nanoparticles form. In order to create an apparatus with which solvent/nonsolvent precipitations may be carried out in such a way as to produce particles that are as small as possible and largely free of Ostwald ripening in the dispersion being formed, it is suggested according to the invention that the educt outlet be followed by a spray-drier unit and that a feedback control system be provided to optimize and maintain the operating parameters for the spray-drier unit.

Apparatus and method for producing dispersions and solids

The invention relates to a method for producing microparticles or nanoparticles of water-soluble and water-insoluble substances by controlled precipitation, co-precipitation and self-organization processes in microjet reactors, a solvent, which contains at least one target molecule, and a nonsolvent being mixed as jets that collide with each other in a microjet reactor at defined pressures and flow rates and thereby effect very rapid precipitation, co-precipitation or a chemical reaction, during the course of which microparticles or nanoparticles are formed. In order to create such a method, with which the particle size of the resulting microparticles or nanoparticles can be specifically controlled, it is proposed within the scope of the invention that particle size be controlled by the temperature at which the solvent and nonsolvent collide, the flow rate of the solvent and the nonsolvent and/or the amount of gas, smaller particle sizes being obtained at lower temperatures, at high solvent and nonsolvent flow rates and/or in the complete absence of gas.

Method and device for producing microparticles or nanoparticles

The invention relates to a measuring instrument and method for detecting the content of oil, hydrocarbons and oxidizable gases in air or compressed air. In order to develop a measuring instrument for detecting the content of oil, hydrocarbons and oxidizable gases in air or compressed air, said instrument being suitable for detecting concentrations in the lower &#x3bc;g/mrange or in the ppb range and allowing measuring accuracy of 10 micrograms oil/mair at a measurement error in the single-digit percentage range, it is proposed according to the invention that the measuring instrument comprises an air or compressed-air connection and, connected thereto, a flow limiter to which a catalyst is connected that is connected in turn with a photoionization detector, switchable means being provided for routing the air or compressed air over the oxidation catalyst or past it directly to the photoionization detector.

Measuring instrument and method for detecting the content of oil, hydrocarbons and oxidizable gases in air or compressed air

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Lebach, Germany

Felix Penth