THERMAL SEPARATING PROCESS
    53.
    发明专利

    公开(公告)号:MY137951A

    公开(公告)日:2009-04-30

    申请号:MYPI20041366

    申请日:2004-04-14

    Applicant: BASF AG

    Abstract: (METH)ACRYLIC MONOMERS ARE SEPARATED BY A THERMAL SEPARATION PROCESS BY ASCENDING AT LEAST ONE ASCENDING GASEOUS STREAM IN A SEPARATING COLUMN CONTAINING A SEQUENCE OF MASS TRANSFER TRAYS AND A LIQUID STREAM THAT CONTAINS DISSOLVED POLYMERIZATION INHIBITOR WHICH DESCENDS IN THE SEPARATING COLUMN, AND IN AT LEAST ONE OF THE STREAMS BEING (METH)ACRYLIC MONOMERS; AND SPRAYING THE INNER SURFACE OF THE SEPARATING COLUMN WITH THE DESCENDING LIQUID STREAM THAT CONTAINS THE DISSOLVED POLYMERIZATION INHIBITOR, AND THE SEPARATING COLUMN HAVING INTERNALS, CERTAIN AREAS OF WHICH ARE SHADOW REGIONS OF THE SPRAYED DESCENDING LIQUID STREAM; AND WHICH SHADOW REGIONS ARE EQUIPPED BY COVERING MEANS (2) WHICH PREVENT CONTACT OF THE SHADOW REGIONS WITH (METH)ACRYLIC MONOMERS AND CONSEQUENTLY UNDESIRED POLYMERIZATION OF MONOMER.

    APPARATUS FOR MEASURING TEMPERATURES IN TUBULAR REACTORS

    公开(公告)号:MY119149A

    公开(公告)日:2005-04-30

    申请号:MYPI9801818

    申请日:1998-04-23

    Applicant: BASF AG

    Abstract: A REACTOR APPARATUS COMPRISES AT LEAST TWO SAME-TYPE TUBULAR REACTORS WHICH ARE FILLED WITH SOLID PARTICLES, AT LEAST ONE TUBULAR REACTOR CONTAINING A TEMPERATURE MEASURING UNIT, THE TUBULAR REACTORS BEING DESIGNED SUCH THAT BOTH THE RATIO OF THE MASS OF THE SOLID PARTICLES TO THE FREE CROSS-SECTIONAL AREA OF THE RESPECTIVE TUBULAR REACTOR AND THE PRESSURE DROP MEASURED BY AN INERT GAS BEING CONDUCTED TRANSVERSELY TO THE FREE CROSS-SECTIONAL AREA ARE IDENTICAL ACROSS THE RESPECTIVE TUBULAR REACTOR. THE APPARATUS IS SUITABLE FOR TREATING FLUID MASSES WHILE GENERATING OR CONSUMING THERMAL ENERGY, THE TEMPERATURE BEING MEASURED.

    Acrolein catalytic oxidation process to acrylic acid in a gaseous phase

    公开(公告)号:CZ294400B6

    公开(公告)日:2004-12-15

    申请号:CZ229495

    申请日:1995-09-07

    Applicant: BASF AG

    Abstract: In the present invention, there is described a process for the catalytic gas-phase oxidation of acrolein to acrylic acid in a multiple contact tube fixed-bed reactor through whose space surrounding the contact tubes only one heat-exchange medium circuit is passed, at elevated temperature on catalytically active multimetal oxides with an acrolein conversion for a single pass and an acrylic acid formation selectivity, which comprises firstly passing the heat-exchange medium through the multiple contact tube fixed-bed reactor longitudinally, considered over the reaction container as a whole, to the contact tubes in co-current to the reaction-gas mixture and secondly superposing a transverse flow within the reaction container by means of an arrangement of successive baffles along the contact tubes which leaves passage cross sections free, so as to give a meandrous flow of the heat-exchange medium, seen in longitudinal section through the contact tube bundle, and setting the flow rate of the circulated heat-exchange medium so that its temperature rises by from 2 to 10 degC.

    57.
    发明专利
    未知

    公开(公告)号:ES2179397T3

    公开(公告)日:2003-01-16

    申请号:ES98107290

    申请日:1998-04-22

    Applicant: BASF AG

    Abstract: Reactor arrangement comprises at least two tubular reactors filled with solid particles, at least one reactor containing a temperature measuring device. The novelty is that the tubular reactors are arranged so that the ratio of the composition of the solid particles to the free cross-sectional surfaces of each reactor as well as the pressure loss, measured by passing an inert gas proportionally transversal to the free cross-sectional, are equal over each tubular reactor. Also claimed is a process for treating fluid compositions with the production and consumption of thermal energy using the above reactor arrangement.

    60.
    发明专利
    未知

    公开(公告)号:ES2122724T3

    公开(公告)日:1998-12-16

    申请号:ES96100052

    申请日:1996-01-04

    Applicant: BASF AG

    Abstract: In the sepn. of (meth)acrylic acid (I) from mixts. by rectification, in which (I) is discharged from the column at a point higher than the inlet for the mixt., the refluxing liq. is removed in at least one position of the column, the oligomerised and/or polymerised (I) is sepd. and the liq. is recycled to the column.

Patent Agency Ranking