METHOD FOR THE OXIDATIVE DEHYDRATION OF N-BUTENES INTO 1,3-BUTADIEN

    公开(公告)号:US20160122264A1

    公开(公告)日:2016-05-05

    申请号:US14898849

    申请日:2014-06-16

    Applicant: BASF SE

    Abstract: The invention relates to a method for producing 1,3 butadien by means of the oxidative dehydration of n-butenes on a heterogenous particulate multimetal oxide catalyst which contains molybdenum as the active compound and at least one other metal and which is filled into the contact tubes (KR) of two or more tube bundle reactors (R-I, R-II), wherein a heat transfer medium flows around the intermediate space between the contact tubes (KR) of the two or more tube bundle reactors (R-I, R-II). The method includes a production mode and a regeneration mode which are carried out in an alternating manner. In the production mode, an n-butene-containing feed flow is mixed with an oxygen-containing gas flow and conducted as a supply flow (1) over the heterogenous particulate multimetal oxide catalyst filled into the contact tubes (KR) of the two or more tube bundle reactors (R-I, R-II), and the heat transfer medium absorbs the released reaction heat, minus the heat quantity used to heat the supply flow (1) to the reaction temperature in the production mode, by means of an indirect heat exchange and completely or partly dispenses the reaction heat onto a secondary heat transfer medium (H2Oliq) in an external cooler (SBK). In the regeneration mode, the heterogenous particulate multimetal oxide catalyst is regenerated by conducting an oxygen-containing gas mixture (3) over the catalyst and burning off the deposits accumulated on the heterogenous particulate multimetal oxide catalyst. The invention is characterized in that the two or more tube bundle reactors (R-I, R-II) have a single heat transfer medium circuit and as many of the two or more tube bundle reactors (R-I, R-II) as necessary are operated constantly in the production mode so that the released reaction heat, minus the heat quantity used to heat the supply flow (1) to the reaction temperature in the production mode, suffices to keep the temperature of the heat transfer medium in the intermediate spaces between the content tubes (KR) of all the tube bundle reactors (R-I, R-II) at a constant level with a variation range of maximally +/−10 DEG C.

    METHOD FOR PROVIDING A AS GAS FLOW COMPRISING OXYGEN FOR THE ENDOTHERMIC REACTION OF A STARTING FLOW COMPRISING ONE OR MORE HYDROCARBONS

    公开(公告)号:MY148889A

    公开(公告)日:2013-06-14

    申请号:MYPI20093243

    申请日:2008-01-31

    Applicant: BASF SE

    Abstract: A METHOD IS PROPOSED FOR PROVIDING AN OXYGEN-CONTAINING GAS STREAM FOR THE ENDOTHERMIC REACTION OF AN INITIAL STREAM COMPRISING ONE OR MORE HYDROCARBONS, HAVING A PREDETERMINED OXYGEN CONCENTRATION AND A PREDETERMINED TEMPERATURE, WHEREIN A FLUID FUEL STREAM IS COMBUSTED WITH A PRIMARY AIR STREAM AT ^, VALUES OF THE PRIMARY AIR STREAM TO THE FLUID FUEL STREAM OF FROM 0.6 TO 1.2 TO OBTAIN A COMBUSTION GAS STREAM, AND A SECONDARY AIR STREAM IS ADMIXED TO THE COMBUSTION GAS STREAM TO OBTAIN THE OXYGEN-CONTAINING GAS STREAM FOR THE ENDOTHERMIC REACTION, WITH THE PREDETERMINED OXYGEN CONCENTRATION AND THE PREDETERMINED TEMPERATURE OF THE OXYGEN-CONTAINING GAS STREAM BEING ADJUSTED VIA THE FLOW RATE AND THE TEMPERATURE OF THE SECONDARY AIR STREAM.

    PROCESSO PARA PREPARAR PARTÍCULAS DE VIDRO ESFÉRICAS OCAS, E, DISPOSITIVO DE AQUECIMENTO

    公开(公告)号:BR112022014385A2

    公开(公告)日:2022-09-20

    申请号:BR112022014385

    申请日:2021-01-13

    Applicant: BASF SE

    Abstract: PROCESSO PARA PREPARAR PARTÍCULAS DE VIDRO ESFÉRICAS OCAS, E, DISPOSITIVO DE AQUECIMENTO. Processo para preparar partículas de vidro esféricas ocas compreendendo pelo menos SiO2, Al2O3 e um óxido de metal alcalino, em que o processo compreende preparar partículas precursoras compreendendo pelo menos SiO2, Al2O3 e um óxido de metal alcalino misturando os materiais de partida, formar uma pasta dos materiais de partida com água seguido de secagem rápida e tratamento térmico das partículas precursoras obtidas a uma temperatura de 1000°C a 1800°C, preferivelmente de 1300°C a 1600°C por contato das partículas precursoras com pelo menos uma chama livre.

    REACTOR FOR CARRYING OUT A REACTION BETWEEN TWO FLUID STARTING MATERIALS OVER A CATALYST BED WITH PREMIXING OF THE FLUID STARTING MATERIALS IN A MIXING-IN DEVICE

    公开(公告)号:MY149683A

    公开(公告)日:2013-09-30

    申请号:MYPI20092537

    申请日:2007-12-14

    Applicant: BASF SE

    Abstract: A REACTOR (1) FOR CARRYING OUT A REACTION BETWEEN TWO FLUID STARTING MATERIALS (2,3) OVER A CATALYST BED (4) WITH PREMIXING OF THE FLUID STARTING MATERIALS (2,3) BEFORE INTRODUCTION INTO THE CATALYST BED WITHIN A DELAY TIME OF LESS THAN 150 MS IN A MIXING-IN DEVICE (5), WHEREIN THE MIXING-IN DEVICE IS MADE UP OF THE FOLLOWING ELEMENTS WHICH ARE ARRANGED ESSENTIALLY TRANSVERSE TO THE INFLOW DIRECTION OF THE FIRST FLUID STARTING MATERIAL STREAM (2): TWO OR THREE ROWS ARRANGED BEHIND ONE ANOTHER OF TUBES (6) WHICH HAVE TURBULENCE GENERATORS ON THE OUTSIDE AND CONSTRICT THE FLOW CROSS SECTION FOR THE FIRST FLUID STARTING MATERIAL STREAM (2) TO FROM 1/2 TO 1/10, WITH THE SECOND FLUID STARTING MATERIAL STREAM (3) BEING PASSED THROUGH THE INTERIORS OF THE TUBES (6) AND INJECTED VIA OPENINGS (7) IN THE TUBES (6) INTO THE FIRST FLUID STARTING MATERIAL STREAM (2); A PERFORATED PLATE UPSTREAM (10) OF THE TUBES (6); AND A PERFORATED PLATE (11) DOWNSTREAM OF THE TUBES (6), IS PROPOSED.

    REACTOR FOR CARRYING OUT A CONTINUOUS OXYDEHYDROGENATION AND PROCESS

    公开(公告)号:MY146945A

    公开(公告)日:2012-10-15

    申请号:MYPI20092538

    申请日:2007-12-17

    Applicant: BASF SE

    Abstract: A REACTOR (1) FOR CARRYING OUT A CONTINUOUS OXYDEHYDROGENATION OF A FEED GAS STREAM (2) OF SATURATED HYDROCARBONS AFTER PREMIXING WITH AN OXYGEN-COMPRISING GAS STREAM (3) OVER A MOVING CATALYST BED (4) WHICH IS INTRODUCED IN THE LONGITUDINAL DIRECTION OF THEIR REACTOR BETWEEN TWO CONCENTRIC CYLINDRICAL HOLDING DEVICES (5,6) SO AS TO LEAVE A CENTRAL INTERIOR SPACE (7) AND AN INTERMEDIATE SPACE (8) BETWEEN THE MOVING CATALYST BED (4) AND THE INTERIOR WALL OF THE REACTOR TO GIVE A REACTION GAS MIXTURE, WHEREIN THE REACTOR (1) HAS TWO OR MORE REACTOR SECTIONS (9) WHICH ARE SEPARATED FROM ONE ANOTHER BY DISK-SHAPED DEFLECTION PLATES (10) ARRANGED ALTERNATELY IN THE CENTRAL INTERIOR SPACE AND DIVIDED IN SUBREGIONS BY ANNULAR DEFLECTION PLATES (11) ARRANGED IN THE INTERMEDIATE SPACE (8) BETWEEN THE MOVING CATALYST BED (4) AND THE INTERIOR WALL OF THE REACTOR, IN EACH CASE WITH A MIXING-IN DEVICE (12) WHICH IS LOCATED UPSTREAM OF THE MOVING CATALYST BED (4) IN THE FLOW DIRECTION OF THE REACTION GAS MIXTURE AND COMPRISES THE FOLLOWING ELEMENTS: TWO OR THREE ROWS ARRANGED BEHIND ONE ANOTHER OF TUBES (13) WHICH HAVE TURBULENCE GENERATORS ON THEIR OUTSIDE AND CONSTRICT THE FLOW CROSS SECTION FOR THE FEED GAS STREAM TO FROM 1/2 TO 1/10 OF THE FREE FLOW CROSS SECTION, WITH THE OXYGEN-COMPRISING GAS STREAM (3) BEING PASSED THROUGH THE INTERIOR SPACES OF THE TUBES (13) AND BEING INJECTED VIA OPENINGS IN THE TUBES INTO THE FEED GAS STREAM (2), AND A PERFORATED PLATE UPSTREAM OF THE TUBES (13) AND A PERFORATED PLATE DOWNSTREAM OF THE TUBES, IS PROPOSED.

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