Stork Amsterdam B.v.

Other

Goudsche Machinefabriek B.v.

Stork Veco B.v.

Johan Frederik Witte

Willem L Thieme

Jan W Horsmans

Described, is a membrane and its method of manufacturing which membrane is an electroformed metal foil having areas of high perforation density (higher than 150000/cm.sup.2) and unperforated areas and in particular also unperforated areas having greater thickness than the other areas. The membrane is produced in a process comprising a two step photolithographic procedure in which canals formed in the first photolithographic step are used to ensure good vacuum contact during the second photolitographic step in which the high density pattern is formed in the photolacquer used. The invention also relates to a separation device incorporating one or more membranes according to the invention.

Membrane with perforations, method for producing such a membrane and

The invention relates to a continuously working crystallizer in the shape of an oblong vessel with at its one end a supply and at its other end a discharge for the solution, with a rotatable driven horizontal shaft extending in lengthwise direction of the vessel and provided with discs extending in transverse direction, said discs being provided with a passage opening for the solution, said discs dividing the vessel in a number of sections succeeding in lengthwise direction to each other, each section having one or more cooled wall surfaces and conduits being provided for supplying and discharging a cooling fluid which is flowing along these cooled wall surfaces.

Continuously working crystallizer

An installation for treating materials, comprising a tightly closed zone having a gastight inlet- and outlet, a shaking gutter with perforated bottom plate covered by a flexible plate with apertures, the whole being accommodated in the closed zone. The flexible material is able to move from the bottom plate, so that a fluid can pass from below the bottom through the bottom and the flexible plate. A fluid inlet opens below the bottom. The shaking gutter has a frequency of 200 to 400 vibrations/minute and an amplitude from 10 to 40 mm.

Apparatus for continuous treatment of material

An apparatus for pressing liquids from compressible material comprising a feed path leading to a pair of rollers, followed by an expression path bounded by a portion of the periphery of the main roller and a cage spaced from and surrounding said portion, the feed path being constituted by a horizontal shaker gutter with a metering device for controlling the thickness of the layer of material supplied by the gutter, depending upon the power consumption of the rollers.

Apparatus for pressing liquids, such as oil and the like from liquid

Apparatus for extraction of oils or fats from oil containing seeds by initially reducing the material size by means of crushing rollers, thereafter heating the material, pressing same in a rotopress having a pressing chamber with decreasing cross section in the direction of the outlet and by finally subjecting the material to a solvent extraction.

Process for extracting oils from oil containing raw materials

Apparatus for treating oil-containing vegetable raw materials by the influence of moisture and heat, whereby during the exposure of a rather thin layer of the oil-containing raw materials to a moisture and heat transfer fluid, the raw materials are subjected to a loosening movement, preferably by means of a vibration.

Apparatus for treating oil containing vegetable raw materials

Process for treating oil containing vegetable raw material by the influence of moisture and heat, whereby during the exposure of a rather thin layer of the oil containing raw materials to a moisture and heat transfer fluid, the raw materials are subjected to a loosening movement by means of a vibration having a substantial vertical component. The frequency of the vibration is 200 - 400 and the vertical amplitude 10 to 40 mm.

Process for treating oil containing vegetable raw materials

A method for treating finely divided materials with a treatment fluid (steam), particularly for conditioning oil containing vegetable raw materials in which one or more vibratory conveyors with a perforated bottom has treatment fluid introduced through at least one inlet opening under the perforated bottom. The larger particles formed by clotting during the action of the treatment fluid are pulverized by pulverizing members and an additional perforated plate. The conditioned materials are dried in hot air.

Apparatus for treating finely divided materials with gaseous fluid

Device for treating finely divided materials with a treatment fluid, particularly for conditioning oil containing vegetable raw materials, comprising one or more vibratory conveyors with a perforated bottom and at least one inlet opening under a perforated bottom for introducing a treatment fluid. The device is provided with pulverizing members and an additional perforated plate for pulverizing the greater particles formed by clotting during the action of the treatment fluid.

Growing community of inventors

Amsterdam-Nieuwendam, Netherlands

Johan Frederik Witte