Bayer Aktiengesellschaft

Wolff Walsrode Ag

Basf Agricultural Solutions Seed US LLC

Lanxess Deutschland Gmbh

Currenta Gmbh & Co. Ohg

Benno Franz Ulfik

Bernd Klinksiek

Gunter Weber

Detmar Redeker

Sebastian Ulrich Schmidt

Tonya Crossland

Mathias Benz

Heiko Herold

Peter-Roger Nyssen

André Lehmann

Jeff Ratliff

Hartmut Huebner

Fatma Alexia Van Winssen

Rainer Elbert

Joachim Beyer

Jürgen Hinderer

J&uuml;rgen Hinderer

Jorg Rainer Schmitz

Uwe Nussbaum

Stefanie Nickel

Egbert John

Methods and devices for sorting cottonseeds. Methods include the use of an optical sorter to sort cottonseed by color. Additionally, methods include sorting cottonseed using a gravity table to collect high-density seed ('accepts') and mid-density seed (“middlings”), followed by sorting the mid-density, and optionally, the high-density seed using an optical sorter to collect dark cottonseed, thereby providing high-quality cottonseed for packaging. Devices and systems comprising one or more gravity tables and one or more optical sorters are provided.

Methods and systems for sorting cottonseed

Methods and devices for sorting cottonseeds. Methods include the use of an optical sorter to sort cottonseed by color. Additionally, methods include sorting cottonseed using a gravity table to collect high-density seed ('accepts') and mid-density seed ('middlings'), followed by sorting the mid-density, and optionally, the high-density seed using an optical sorter to collect dark cottonseed, thereby providing high-quality cottonseed for packaging. Devices and systems comprising one or more gravity tables and one or more optical sorters are provided.

The invention relates to an improved process for the production of finely divided blowing agent powders.

Process for the production of finely divided milled material

Finely divided polysacharide derivatives are described. The finely divided polysacharide derivatives are prepared by a process comprising: a) forming an aqueous composition comprising a polysaccharide derivative and water, in which the polysaccharide derivative is soaked or dissolved; b) converting the polysaccharide derivative of the aqueous composition into finely divided solid particles by, (i) contacting the aqueous composition with superheated water vapor in a dryer-pulverizer; or (ii) causing the polysaccharide derivative of the aqueous composition to flocculate; and c) optionally drying the finely divided solid particles of step b). The primary structures of the polysaccharide starting material are largely removed, and the product has a shape factor of less than 5 and greater than or equal to 1.

Finely divided polysaccharide derivatives

The invention relates to a new, particularly economic process for preparing pulverulent polysaccharide derivatives, in particular cellulose derivatives, having a thermal flocculation point; the process comprises soaking or dissolving the polysaccharide derivative in a solvent or mixed solvent, dividing/comminuting the soaked or dissolved polysaccharide derivative by thermal and/or mechanical liquid separation and an optional drying step.

Process for preparing fine-particle polysaccharide derivatives

For the metered feed of coarse granular material into an air jet mill an injector 3 operated by propellent air is used, the coarse material being fed continuously to a closed injector hopper 6 provided on the injector 3. In the injector hopper 6, the pressure is measured at a product-free point and, by resetting the propellent air mass flow at the injector 3 is held constant at a preselected setpoint partial vacuum value. Said setpoint value is preferably set so low that at said pressure there is only just no return flow from the injector 3 into the injector hopper 6. The apparatus for effecting said method comprises a control loop having a pressure sensor 16 for measuring the flow in the closed injector hopper 6, a motor-adjustable valve 4, 5 as an actuator for varying the supplied propellent air mass flow and a loop controller, which compares the actual pressure value with a preselected setpoint value and supplies a control signal for operating the actuator 4, 5.

Method and apparatus for the metered feed of coarse granular material

In the process for the continuous collection of pulverulent or dusty samples from a particle-laden stream, a sample stream is drawn off from a particle-laden main stream in a pneumatic conveying line 17 and passed via a collection line 9 to a particle size measurement device 10. In order to reduce spin, the main stream in the conveying line 17 is passed through a venturi-like cross-sectional constriction 3, 4, 5, the cross-sectional area of which is 10 to 60% of the free cross-sectional area of the conveying line 17. Samples are then collected downstream from the cross-sectional constriction through one or more probe tubes 7, wherein a partial stream is collected from the main stream parallel to the direction of flow thereof. In conjunction with a jet mill 14, into which the product to be ground and the propellant air are continuously introduced, the particle size distribution measured in the continuously collected sample stream may be used as a control parameter in order to adjust a parameter which determines particle size distribution of the jet mill 14 in such a manner that the particle size distribution in the product stream remains constant.

Process for sampling in particle-laden gas streams

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Leverkusen, Germany

Benno Franz Ulfik