Other

Degussa - Huls Ag

Evonik Carbon Black Gmbh

Orion Engineered Carbons Gmbh

Brandenburgische Technische Universität Cottbus-senftenberg

Riebel, Ulrich

Kma Umwelttechnik Gmbh

Ulrich Riebel

Alfons Karl

Matthias Katzer

Kai Krauss

Juergen Behnisch

Yves G Stommel

Udo Kraeuter

Peter Khatchikian

Volodymyr Lebedynskyy

Jürgen Behnisch

Joachim Schwentner

The invention relates to a method for producing carbon black or other flame aerosols, comprising the following steps: the heat is removed from the flame by dissipation and/or radiation; a thin gas boundary layer is formed; the flow formed by the flame and the gas boundary layer is accelerated or expanded; the obtained aerosol is withdrawn; and the cooling surface is cleaned. The invention further relates to a device for carrying out such a method and a black carbon having a maximum pH value of 6.0, a maximum ignition residue of 0.1 percent, and a maximum 5 &#x3bc;m screening refuse of 200 ppm. The inventive black carbon can be used in rubber, plastic, printing inks, inks, inkjet inks, toners, lacquers, dyes, paper, bitumen, concrete, and other construction materials.

Carbon black, method for the production of carbon black or other flame aerosols, and device for carrying out said method

The invention relates to a device for charging or adjusting the charge of gas-borne particles into a defined charge distribution under utilization of corona discharge in the aerosol space. In addition to an appropriate geometry of the charger and the electrodes, the voltage waveform and the voltage regulation are of great significance for the result. The application further relates to a method for operating the device.

Aerosol charge altering device

The invention relates to a process for measuring particle size by measuring the attenuation of radiation after its passage through a defined measuring section containing a disperse system. According to the invention the temporally fluctuating transmission signal is recorded with variable time or spatial resolution. The transmission signals recorded then undergo a non-linear operation. The result of that non-linear operation is represented and analyzed as a spectral curve, i.e., as a function of the spatial or temporal resolution.

Method of measuring particle sizes

Measurement of density and mass flow of disperse systems with a gas as fluid phase flowing through a pipe is carried out by introducing sound in the frequency range 20-2,000 Hz in the middle of the cross-section of the pipe. The sound has a wavelength which is at least half the pipe diameter. The speed propagation of sound waves in the flowing disperse system is is measured in the axial direction of flow over at least two transit sections of differing length; and the speed propagation of sound waves in the flowing disperse system is also measured in a direction contrary to the axial direction of flow over at least two transit sections of differing length. The fill level of a reception member in communication with a line of the disperse system is calculated from the measured mass flow rate over a period of time.

Process and apparatus for measuring density and mass flow

Method of and an apparatus for ultrasonic measuring of the solids

Growing community of inventors

Briesen, Germany

Ulrich Riebel