中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

165 records (took 0.021 seconds)

    Preparing organic target compound by heterogeneously catalyzed gas phase partial oxidation of organic precursor compound with molecular oxygen in two oxidation reactor lines operated in parallel and removal of compound from gas stream
    103.
    发明专利
    Preparing organic target compound by heterogeneously catalyzed gas phase partial oxidation of organic precursor compound with molecular oxygen in two oxidation reactor lines operated in parallel and removal of compound from gas stream 未知

    公开(公告)号：DE102005009882A1

    公开(公告)日：2006-11-16

    申请号：DE102005009882

    申请日：2005-03-01

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  MUELLER-ENGEL KLAUS JOACHIM ,  PETZOLDT JOCHEN ,  HAMMON ULRICH

    IPC: C07B33/00 ,  C07B35/04 ,  C07C45/33 ,  C07C47/22 ,  C07C57/05

    Abstract: Preparing at least one organic target compound (I) by heterogeneously catalyzed gas phase partial oxidation of at least one organic precursor compound with molecular oxygen in at least two oxidation reactor systems comprising catalyst charges and are operated in parallel to obtain at least two product gas streams (II) each comprising (I) and each stemming from one of the at least two oxidation reactor systems and subsequent removal of (I) from (II) to obtain at least one crude target product stream, where the process comprises before, during and/or after the removal, mixing together (II). Preparing at least one organic target compound (I) by heterogeneously catalyzed gas phase partial oxidation of at least one organic precursor compound with molecular oxygen in at least two oxidation reactor systems comprising catalyst charges and are operated in parallel to obtain at least two product gas streams (II) each comprising (I) and each stemming from one of the at least two oxidation reactor systems and subsequent removal of (I) from (II) to obtain at least one crude target product stream, where the process comprises before the removal, mixing together (II); or in the course of the removal, mixing together at least two of any target product-comprising subsequent streams obtained on the route from (II) to the at least one crude target product stream; and/or after the removal from (II), mixing together any crude target product streams obtained in the course of the removal, to form a mixture stream, where at least one of the catalyst charges of the at least two oxidation reactor systems operated in parallel, over which the target compounds comprised in the mixture stream were formed, comprises at least one portion of catalyst over which the heterogeneously catalyzed gas phase partial oxidation has already been carried out longer than over all portions of catalyst of the at least one other catalyst charge. An independent claim is included for an apparatus comprising two oxidation reactor systems which are charged with catalysts that are suitable for the preparation of (I) by heterogeneously catalyzed partial oxidation of an organic precursor compound and at whose outlet is disposed in each case a line for the removal of the product gas stream comprising (I) from the particular oxidation reactor system, which lines are combined with increasing distance from the two oxidation reactor systems to give a product gas line which leads to an apparatus in which the product gas stream can be condensed partly or fully, where the catalyst charge of one of the two oxidation reactor systems comprises at least one portion of catalyst over which more target product has already been generated than over the portions of catalyst of the catalyst charge of the other oxidation reactor system.

    PLATEAU DE COLLECTE AYANT UN COEFFICIENT DE TRANSFERT THERMIQUE FAIBLE POUR UNE COLONNE DE RECTIFICATION
    104.
    发明专利
    PLATEAU DE COLLECTE AYANT UN COEFFICIENT DE TRANSFERT THERMIQUE FAIBLE POUR UNE COLONNE DE RECTIFICATION 未知

    公开(公告)号：FR2882938A1

    公开(公告)日：2006-09-15

    申请号：FR0601763

    申请日：2006-02-28

    Applicant: BASF AG

    Inventor： DIEFENBACHER ARMIN ,  MULLER ENGEL KLAUS JOACHIM ,  HAMMON ULRICH

    IPC: B01D3/18 ,  B01D3/14 ,  C07C7/04 ,  C07C57/05

    Abstract: La présente invention concerne un plateau à cheminées pour une colonne destinée au traitement thermique d'un liquide, comportant un plateau supérieur et un plateau inférieur qui sont espacés l'un de l'autre, agencés sensiblement horizontalement dans la colonne, comportant des cheminées, et comportant également l'extraction du liquide via une goulotte de drainage agencée sur le bord du plateau à cheminées, le plateau supérieur et le plateau inférieur ayant une séparation minimale l'un par rapport à l'autre de 10 à 500 mm et, entre le plateau supérieur et le plateau inférieur, a été incorporé un gaz thermiquement isolant ayant une conductivité thermique inférieure à 0,5 W/m/K.

    Preparation of acrolein or acrylic acid involves conducting starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses through fixed catalyst bed
    105.
    发明专利
    Preparation of acrolein or acrylic acid involves conducting starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses through fixed catalyst bed 未知

    公开(公告)号：DE102005009891A1

    公开(公告)日：2006-09-07

    申请号：DE102005009891

    申请日：2005-03-01

    Applicant: BASF AG

    Inventor： DIETERLE MARTIN ,  MUELLER-ENGEL KLAUS-JOACHIM ,  HECHLER CLAUS ,  HAMMON ULRICH ,  DIEFENBACHER ARMIN

    IPC: C07C57/05 ,  C07C57/07 ,  C08F20/06

    Abstract: Acrolein or acrylic acid is prepared by catalyzing partial gas phase oxidation of propene, where a starting reaction gas mixture having propylene and molecular oxygen reactants and inert molecular nitrogen and propane diluent gasses is conducted at elevated temperature through a fixed catalyst bed whose active composition is a multimetal oxide having molybdenum, iron and bismuth. Preparation of acrolein or acrylic acid involves catalyzing partial gas phase oxidation of propene, where a starting reaction gas mixture having propylene and molecular oxygen reactants and the inert molecular nitrogen and propane diluent gasses and having the molecular oxygen and the propylene in a molar oxygen;C 3H 6 ratio of >=1 is conducted at elevated temperature through a fixed catalyst bed whose active composition is a multimetal oxide having molybdenum, iron and bismuth based on its total volume of 6-9 vol.% propylene, 8-18 vol.% molecular oxygen. 6-30 vol.% propane and 32-72 vol.% molecular nitrogen. The molar ratio V 1 of propane in starting reaction gas mixture to propylene in starting reaction gas mixture is 1-4. The molar V 2 of molecular nitrogen present in starting reaction gas mixture to molecular oxygen in starting reaction the mixture is 2-6, and the molar ratio of the molecular oxygen in starting reaction gas mixture to propylene in starting reaction mixture is 1.3-2.4.

    Absorptive separation of acrylic acid, useful for the production water absorbents and adhesives, comprises recycling organic raffinate from the acid water extraction to the absorption unit at least one theoretical stage below its head
    110.
    发明专利
    Absorptive separation of acrylic acid, useful for the production water absorbents and adhesives, comprises recycling organic raffinate from the acid water extraction to the absorption unit at least one theoretical stage below its head 未知

    公开(公告)号：DE10336386A1

    公开(公告)日：2004-03-04

    申请号：DE10336386

    申请日：2003-08-06

    Applicant: BASF AG

    Inventor： DIEHL VOLKER ,  JAEGER ULRICH ,  HAMMON ULRICH ,  SCHROEDER JUERGEN

    IPC: C07C51/25 ,  C07C51/44 ,  C07C51/48 ,  C07C57/07

    Abstract: Process for the absorptive separation of acrylic acid from a product gas mixture, resulting from a heterogeneously catalyzed gas phase oxidation of propene comprises cooling of the product mixture and feeding to an absorption unit with recycling of the organic raffinate from the acid water extraction to the absorption unit whereby the recycle is carried out at least one theoretical stage below the head of the absorption unit. Process for the absorptive separation of acrylic acid from a product gas mixture, resulting from a heterogeneously catalyzed gas phase oxidation of propene to acrylic acid and containing acrylic acid and water vapor as well as by-products comprising low boiling material, middle boiling material, high boiling material and material that is difficult to condense, comprises cooling of the product mixture; passage of the cooled product mixture by counter current flow into an absorption unit containing an ascending high boiling point liquid hydrophobic organic absorption agent with avoidance of the formation of a liquid aqueous phase; cooling of the non-absorbed residual product mixture in a condensation unit with condensation of the water vapor and low boiling point material as acid water; recycling of a partial quantity as a diluent gas to the gas phase oxidation of propene with a partial quantity used as a stripping gas after passage through a washing unit to remove acrylic acid and disposal of the remaining gas; passage of a small amount of the absorbed liquid containing acrylic acid to a distillation unit as a high boiling point outlet that is recycled, as a vapor phase by heating, back to the absorption unit and the remaining high boiling point material is disposed of; the liquid outlet from the absorption unit containing acrylic acid is fed to a desorption unit and low boiling point material removed by the stripping gas with recycle of the stripping gas containing low boiling point material to the absorption unit; passage of the absorption agent stream containing acrylic acid to a distillation column having a concentrating and a distillation compartment with condensation of the absorption agent and high boiling point material in the sump of the distillation column; separation of crude acrylic acid via a side take-off from the concentrating compartment of the distillation column; recycle of the low boiling point materials from the head of the column to the absorption unit; removal of the absorption agent from the sump of the distillation column with optional addition of fresh absorption agent as required and passage through the wash unit in counter-current flow to the recycle gas flow to remove acrylic acid; partition of the absorption agent leaving the wash unit into two portions having the same composition whereby the larger portion is recycled to the head of the absorption unit and the smaller portion is mixed with acid water in an extractive exchange in order to take up the acrylic acid contained in the acid water into the absorption agent and the polar middle boiling material contained in the absorption agent into the acid water; recycle of the organic raffinate from the acid water extraction to the absorption unit whereby the recycle is carried out at least one theoretical stage below the head of the absorption unit.

Patent Agency Ranking