Covestro Deutschland Ag

Covestro Intellectual Property Gmbh & Co. Kg

Chemetics Inc.

Thomas Runowski

Jörg Hofmann

Friedhelm Steffens

Alfred Soppe

Thorsten Leidig

Knud Werner

Wolfgang Lorenz

Berthold Keggenhoff

Matthias Wohak

Stefanie Braun

Jeffrey Bolton

Werner Bäcker

Gerhard Ruffert

Martin Kürten

Dieter Heitkamp

Dieter Förtsch

Juergen Bittner

Marc Seekamp

Jiyuan Sun

Ulrich Hollmann

Jürgen Kern

Maria Francisco Casal

Jürgen Bittner

Frank Risse

Arnold Newrzella

Tim Predel

The present invention relates to an apparatus and a method for evaporating liquids containing potentially explosive impurities of lower volatility than the actual liquid compound. The set-up of the evaporator according to the invention allows its operation with complete evaporation of a liquid without formation of a liquid sump of not yet evaporated liquid.

Apparatus and method for evaporating liquids containing potentially explosive impurities

One or more fluid streams are uniformly divided into two or more partial fluid streams in chemical apparatuses in a manner such that there is a reduced tendency to form deposits. Division of such stream(s) is achieved by using a distributor device that includes at least one plate having two or more openings which openings are rounded or chamfered on at least one side.

Method for dividing fluid streams

The present invention relates to a process for purifying raw-material gases by fractionation. In particular, the present invention relates to a process for cleansing chlorine gas of bromine.

Process for purifying raw-material gases by fractionation

The invention relates to a device (R) for producing phosgene by reacting chlorine and carbon monoxide in the presence of a fixed-bed catalyst, comprising a) a tube bundle, which is arranged inside a reactor jacket () and which has a plurality of reaction tubes (), which are arranged substantially parallel to each other and which extend from a lower tube sheet () to an upper tube sheet (), and b) a coolant space for a cooling fluid, which coolant space surrounds the reaction tubes () and is defined by the lower tube sheet (), the upper tube sheet (), and the reactor jacket (), wherein the device is characterized in that the tube bundle is enclosed by an annular-space sheet (), which defines an inner annular space () for the passage of the cooling fluid and which is arranged at a distance from both the lower tube sheet () and the upper tube sheet (), wherein an outer annular space () for feeding liquid cooling fluid through is formed between the annular-space sheet () and the reactor jacket (), which outer annular space is in fluid connection with the inner annular space (). The invention further relates to a method for producing phosgene by means of such a device.

Device and method for producing phosgene

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Hilden, Germany

Thomas Runowski