Basf Se Corporation

Basf Aktiengesellschaft

Other

Lothar Karrer

Sven Crone

Hans-Guenter Wagner

Heinz Ruetter

Markus Eggersmann

Christoph Bayer

Kam Wing Wong

Patrik Pietz

Heiko Urtel

Stephan Hatscher

Guido Henze

Heinz-Josef Kneuper

Frank-Friedrich Pape

Hans-Dieter Eichhorn

Michael Hullmann

David J Artrip

Reinhold Schwalm

Rainer Becker

Uwe Meisenburg

Heinrich Aichinger

Claudius Kormann

Hans-Peter Neumann

Guenter Herrmann

Frank Hoefer

Frank Jaekel

Nick Gruber

Peter Weidlich

Klaus Herzog

Uwe Rebholz

Feelly Ruether

Ulrich Kohler

Somnath Shivaji Kadam

Gabriele Zimmer

Robin Stuart Jarret

Gero Nordmann

Frank Höfer

Guenther Kirchner

Jörn Karl

Process for making solid methylglycine diacetate (MGDA) alkali metal salt (a), said process comprising the steps of (A) providing a 35 to 60% by weight aqueous solution of said MGDA salt having a temperature in the range of from 50 to 90&#xb0; C., (B) adding 0.01 to 2% by weight of a particulate solid with a pore volume in the range of from 0.25 to 0.75 cm/g, determined by nitrogen adsorption in accordance with 66134:1998-02 (b), the percentage referring to the content of (a), (C) crystallizing (a), (D) removing said crystalline (a) from the mother liquor.

Process for making solid methylglycine diacetate (MGDA) alkali metal salt, and solid particles

Disclosed is a process for the regeneration of an adsorber. For the regeneration a liquid stream (S) is applied which is obtained by hydrogenation of a stream (S) comprising at least one alkane and least one olefin. The stream (S) comprises one alkane and a reduced amount of at least one olefin compared to the amount in the stream (S). Then the stream (S) is converted from the liquid into the gaseous phase and the adsorber is regenerated by contact with the gaseous stream (S).

Process for adsorber regeneration

Disclosed is a process for the regeneration of an adsorber (A). The adsorber (A) is regenerated by contact with a gaseous stream (S) and the outflow of the adsorber (A) comprising condensate of stream (S) and organic composition (OC) collected in a device. After regeneration of the adsorber (A) the stream (S) in the adsorber (A) is replaced completely or at least partially by the content of the device. Then the adsorber (A) is fed with organic composition comprising at least one olefin, at least one alkane and at least one compound containing oxygen and/or sulfur.

Product recovery process for adsorber regeneration

Disclosed is a process for the purification of an organic composition (OC) by adsorption using an assembly containing at least two adsorbers. The organic composition (OC) comprising at least one alkane, at least one olefin and at least one compound containing oxygen and/or sulphur is fed into a first adsorber (A) of the assembly in order to obtain an organic composition (OC) comprising at least one alkane, at least one olefin and a reduced amount of at least one compound containing oxygen and/or sulphur compared to the respective amount in organic composition (OC). Hydrogenation of the organic composition (OC) provides a stream (S) comprising at least one alkane and a reduced amount of at least one olefin compared to the respective amount in organic composition (OC) obtained after feeding into the first adsorber (A). A second adsorber (A) of the assembly is regenerated by contact with stream (S).

Process for purification of an organic composition

A process for the production of oligomerized olefins comprising the following steps: purification of an organic composition (OC) in at least one adsorber to obtain an organic composition (OC); oligomerization of organic composition (OC) in the presence of a catalyst to obtain an organic composition (OC); distillation of organic composition (OC) in a distillation column (D1) to obtain an organic composition (OC) from the upper part of (D) and an organic composition (OC) from the lower part of (D); hydrogenation of organic composition (OC) to obtain an organic composition (OC) and regeneration of an adsorber (A) employing organic composition (OC) as regeneration media.

Process for the production of oligomerized olefins

The invention relates to a process for the regeneration of an adsorber. For the regeneration a liquid stream (S) comprising at least one alkane is converted from liquid phase into gaseous phase. Then the adsorber is regenerated and heated by contact with gaseous stream (S) up to 230 to 270&#xb0; C. Subsequently, the adsorber is cooled first by contact with gaseous stream (S) to a temperature of 90 to 150&#xb0; C. followed by cooling with liquid stream (S) to a temperature below 80&#xb0; C. The outflow of the adsorber (S*) during the cooling with gaseous stream (S) and optionally the outflow of the adsorber (S*) during cooling with liquid stream (S) is recycled in at least one of these steps.

Recycling process for adsorber regeneration

The invention relates to a process for regeneration of an adsorber (A) by contact with a stream (S), wherein the stream (S) is heated in advance by at least two heat exchange units (HEU) and (HEU). As outflow of the adsorber (A) a stream (S) is obtained, which is passed through at least two heat exchange units (HEU) and (HEU) traversed by stream (S), wherein the temperature of stream (S) fed into each heat exchange unit is higher than the temperature of stream (S) fed into the heat exchange units (HEU) and (HEU), in order to directly transfer heat from stream (S) to stream (S).

Heat exchange process for adsorber regeneration

The invention relates to a process for the regeneration of a copper-, zinc- and zirconium oxide-comprising adsorption composition after use thereof for the adsorptive removal of carbon monoxide from substance streams comprising carbon monoxide and at least one olefin, in which the adsorption composition is heated to a temperature in the range from 160 to 400&#xb0; C. and a regeneration gas is passed through the adsorption composition, wherein the regeneration gas comprises 1000 to 3000 ppm of oxygen in an inert carrier gas.

Process for the regeneration of a copper, zinc and zirconium oxide-comprising adsorption composition

A process for the activation of a copper, zinc and zirconium oxide-comprising adsorption composition for the adsorptive removal of carbon monoxide from substance streams comprising carbon monoxide and at least one olefin wherein: (i) in a first activation step an activation gas mixture comprising the olefin and an inert gas is passed through the adsorption composition; and (ii) in a second activation step the adsorption composition is heated to a temperature in the range from 180 to 300&#xb0; C. and an inert gas is passed through it, wherein the steps (i) and (ii) can each be performed several times.

Process for the activation of a copper-, zinc- and zirconium oxide-comprising adsorption composition

The invention relates to a process for the activation of a copper, zinc and zirconium oxide-comprising adsorption composition for the adsorptive removal of carbon monoxide from substance streams comprising carbon monoxide and at least one olefin wherein

Process for preparing (meth)acrylates of C-alcohol mixtures, by reacting (meth)acrylic acid with an isomer mixture of C-alcohols composed of 2-propylheptanol as the main isomer and at least one of the C-alcohols 2-propyl-4-methylhexanol, 2-propyl-5-methylhexanol, 2-isopropylheptanol, 2-isopropyl-4-methylhexanol, 2-isopropyl-5-methylhexanol and/or 2-propyl-4,4-dimethylpentanol, in the presence of at least one acidic catalyst and of at least one polymerization inhibitor and in the presence of a solvent which forms an azeotrope with water, the azeotrope is distilled off and condensed, and the condensate splits into an aqueous phase and an organic phase, wherein

[object Object]

Preparation of aromatic or heteroaromatic nitrites of the formula I ##STR1## where X is nitrogen or C-R.sup.6 and all of the R substituents represent hydrogen, alkyl, halogen, nitro, amino or similar groups, provided at least one substituent is a cyano or alkylcyano group. The nitrites I are produced by reacting aromatic or heteroaromatic hydrocarbons of the formula II ##STR2## where X is nitrogen or C-R.sup.6, provided at least one substituent is C.sub.1 -C.sub.8 -alkyl, with ammonia and oxygen at 200 to 600.degree. C. under a pressure of 0.1 to 5 bar in the gas phase over a supported catalyst containing 0.5 to 20% by weight of vanadium oxide. The supported catalyst consists of from 2 to 30 particle fractions whose mean diameters differ by from 10 to 80% and the supporting carrier of the catalyst has a bulk density of 0.6 to 1.2 kg/liter.

Preparation of aromatic or heteroaromatic nitriles

Catalyst based on oxides of Fe, Co, Bi and Mo

Supported catalysts which are suitable for ammonoxidation, comprising

Supported catalysts which are suitable for ammonoxidation

Growing community of inventors

Pfungstadt, Germany

Lothar Karrer