Patent application number | Description | Published |
20080214863 | PROCESS FOR PREPARING A CATALYST CONSISTING OF A SUPPORT BODY AND A CATALYTICALLY ACTIVE COMPOSITION APPLIED ON THE SURFACE OF THE SUPPORT BODY - A process for preparing a coated catalyst in which a finely divided mixture of a multielement oxide comprising the elements Mo and V and a molybdenum oxide or a molybdenum oxide former is applied to the surface of a support body as an active composition. | 09-04-2008 |
20080307648 | PROCESS FOR INTRODUCING A PORTION WITHDRAWN FROM AT LEAST ONE PRODUCTION CHARGE OF ANNULAR COATED CATALYSTS K INTO A REACTION TUBE OF A TUBE BUNDLE REACTOR - A process for introducing annular coated catalysts K into a reaction tube of a tube bundle reactor, in which adhering pairs of annular coated catalysts K formed in the preparation of the annular coated catalysts K, before the introduction thereof into the reaction tube, are removed at least partly from the annular coated catalysts K. | 12-18-2008 |
20090076284 | PROCESS FOR CONTINUOUSLY REMOVING A TARGET PRODUCT X IN THE FORM OF FINE CRYSTALS - A process for continuously removing a target product X in the form of fine crystals from a liquid phase P comprising the target product X and constituents other than the target product X by cooling suspension crystallization in the secondary chamber, into which the liquid phase P flows continuously, of an indirect heat exchanger with simultaneous continuous flow of a coolant through the primary chamber of the indirect heat exchanger and continuous withdrawal of a crystal suspension S having a degree of crystallization Y from the secondary chamber, in which the degree of crystallization Y is adjusted on the basis of a heat balance conducted continuously with the aid of a process computer. | 03-19-2009 |
20090270652 | PROCESS FOR TRANSFERRING HEAT TO A LIQUID COMPRISING DISSOLVED MONOMERIC ACRYLIC ACID, MICHAEL ACRYLIC ACID OLIGOMERS AND ACRYLIC ACID POLYMER - A process for transferring heat to a liquid F comprising dissolved monomeric acrylic acid, Michael acrylic acid oligomers, and acrylic acid polymer with the aid of an indirect heat exchanger to which are supplied the liquid F with a temperature T | 10-29-2009 |
20120071688 | PROCESS FOR PREPARING ACRYLIC ACID FROM METHANOL AND ACETIC ACID - A process for preparing acrylic acid from methanol and acetic acid, in which, in a reaction zone A, the methanol is partially oxidized to formaldehyde in a heterogeneously catalyzed gas phase reaction, the product gas mixture A obtained and an acetic acid source are used to obtain a reaction gas input mixture B which comprises acetic acid and formaldehyde and has the acetic acid in excess over the formaldehyde, and the formaldehyde present in reaction gas input mixture B is aldol-condensed to acrylic acid under heterogeneous catalysis in a reaction zone B with acetic acid present in reaction gas input mixture B, and unconverted acetic acid still present alongside the acrylic acid target product in the product gas mixture B obtained is removed therefrom, and the acetic acid removed is recycled into the production of reaction gas input mixture B. | 03-22-2012 |
20120296108 | PROCESS FOR PRODUCING GEOMETRIC SHAPED CATALYST BODIES - A process for producing geometric shaped catalyst bodies K whose active material is a multielement oxide of stoichiometry | 11-22-2012 |
20130023699 | MO-, BI- AND FE-COMPRISING MULTIMETAL OXIDE COMPOSITIONS - Mo-, Bi- and Fe-comprising multimetal oxide compositions of the general stoichiometry I, | 01-24-2013 |
20130172577 | PROCESS FOR PRODUCING A RINGLIKE OXIDIC SHAPED BODY - A process for producing a ringlike oxidic shaped body by mechanically compacting a pulverulent aggregate introduced into the fill chamber of a die, wherein the outer face of the resulting compact corresponds to that of a frustocone. | 07-04-2013 |
20130274519 | THERMAL SEPARATION PROCESS - A thermal separation process between a gas ascending in a separating column and a liquid descending in the separating column, which comprise (meth)acrylic monomers, wherein the separating column comprises a sequence of crossflow mass transfer trays, the crossflow mass transfer trays of which have passage orifices for the ascending gas in crossflow direction both in front of and beyond a downcomer for the descending liquid, and such crossflow mass transfer trays and one such crossflow mass transfer tray in a sequence of crossflow mass transfer trays present in a separating column. | 10-17-2013 |
20140018570 | PROCESS FOR PREPARING ACRYLIC ACID FROM ETHYLENE OXIDE AND CARBON MONOXIDE - A process for preparing acrylic acid from ethylene oxide and carbon monoxide, in which ethylene oxide is carbonylated in an aprotic solvent with carbon monoxide in the presence of a cobalt catalyst system to give poly-3-hydroxypropionate, the cobalt content in the poly-3-hydroxypropionate formed is reduced with the aid of water and/or an aqueous solution as a precipitation and/or wash liquid, and the poly-3-hydroxypropionate is subsequently split by thermolysis to give acrylic acid. | 01-16-2014 |
20140018572 | PROCESS FOR HETEROGENEOUSLY CATALYZED GAS PHASE PARTIAL OXIDATION OF (METH)ACROLEIN TO (METH)ACRYLIC ACID - A process for preparing (meth)acrylic acid by heterogeneously catalyzed gas phase partial oxidation of (meth)acrolein over a multimetal oxide composition which comprises the elements Mo, V and W and is obtained by a hydrothermal preparation route, and the multimetal oxide composition obtainable by this preparation route. | 01-16-2014 |
20140018574 | PROCESS FOR PREPARING ACRYLIC ACID BY A THERMOLYSIS OF POLY-3-HYDROXYPROPIONATE CATALYZED BY AT LEAST ONE MOLECULAR ACTIVE COMPOUND - A process for preparing acrylic acid by thermolysis of poly-3-hydroxypropionate in the presence of one or more specific tertiary amines as a catalyst. | 01-16-2014 |
20140039213 | PROCESS FOR PRODUCING GEOMETRIC SHAPED CATALYST BODIES - A process for producing geometric shaped catalyst bodies K whose active material is a multielement oxide of stoichiometry | 02-06-2014 |
20140046093 | PROCESS FOR CHARGING A LONGITUDINAL SECTION OF A CATALYST TUBE - A process for charging a longitudinal section of a catalyst tube with a homogeneous fixed catalyst bed section whose active composition is at least one multielement oxide or comprises elemental silver on an oxidic support body and whose geometric shaped catalyst bodies and shaped inert bodies have a specific inhomogeneity of their longest dimensions. | 02-13-2014 |
20140064017 | PROCESS FOR MIXING A LIQUID OR MIXTURE OF A LIQUID AND A FINE SOLID PRESENT IN AN ESSENTIALLY SELF-CONTAINING VESSEL - A process for mixing a liquid stored in a vessel, in which gas is sucked in from the gas phase present above the liquid interface with a suction apparatus present in the liquid, and released into it again for the gas-induced mixing of the liquid. | 03-06-2014 |
20140221683 | PROCESS FOR PRODUCING A CATALYTICALLY ACTIVE COMPOSITION BEING A MIXTURE OF A MULTIELEMENT OXIDE COMPRISING THE ELEMENTS MO AND V AND AT LEAST ONE OXIDE OF MOLYBDENUM - A process for producing a catalytically active composition being a mixture of a multielement oxide comprising the elements Mo and V and at least one oxide of molybdenum, in which spray drying of an aqueous solution or of an aqueous suspension of starting compounds comprising the elements of the multielement oxide produces a spray powder P, a pulverulent oxide of molybdenum and optionally shaping assistants are added thereto, shaped bodies are shaped from the resulting mixture and these are converted to the catalytically active composition by thermal treatment. | 08-07-2014 |
20140296558 | PROCESS FOR PRODUCING GEOMETRIC SHAPED CATALYST BODIES - A process for producing geometric shaped catalyst bodies K whose active material is a multielement oxide of stoichiometry | 10-02-2014 |