PROCESS FOR PREPARING PHTHALIC ANHYDRIDE

    公开(公告)号:MY140990A

    公开(公告)日:2010-02-12

    申请号:MYPI20056087

    申请日:2005-12-21

    Applicant: BASF AG

    Abstract: A PROCESS IS PROPOSED FOR PREPARING PHTHALIC ANHYDRIDE BY CATALYTIC PARTIAL OXIDATION OF OXYLENE AND/OR NAPHTHALENE WITH A GAS COMPRISING OXYGEN IN A PLANT COMPRISING -TWO OR MORE REACTION ZONES COOLED WITH A COOLANT, -ONE OR MORE DEVICES ARRANGED BETWEEN THE REACTION ZONES FOR INTERMEDIATE COOLING OF THE REACTION MIXTURE BETWEEN THE REACTION ZONES, THE TEMPERATURE OF THE COOLANT ON ENTRY INTO THE SECOND OR INTO THE FURTHER REACTION ZONES DECREASING COMPARED TO THE TEMPERATURE OF THE COOLANT ON ENTRY INTO THE FIRST REACTION ZONE, WHEREIN THE TEMPERATURE OF THE COOLANT ON ENTRY INTO THE FIRST REACTION ZONE IS MORE THAN 20º HIGHER THAN THE TEMPERATURE OF THE COOLANT ON ENTRY INTO THE SECOND OR INTO THE FURTHER REACTION ZONES.

    REACTOR AND METHOD FOR PRODUCING PHOSGENE

    公开(公告)号:IN237581B

    公开(公告)日:2010-01-01

    申请号:IN1858CH2004

    申请日:2004-08-20

    Applicant: BASF AG

    Abstract: A reactor (1) for preparing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a solid catalyst, which reactor has a bundle of parallel catalyst tubes (2) aligned in the longitudinal direction of the reactor whose ends are fixed in tube plates (3) and have a cap (4) at each end of the reactor (1), and has deflection plates (6) which are aligned perpendicular to the longitudinal direction of the reactor in the intermediate space (5) between the catalyst tubes (2) and leave free passages (7) located alternately opposite one another on the interior wall of the reactor, and in which the catalyst tubes (2) are charged with the solid catalyst, the gaseous reaction mixture is passed from one end of the reactor via one cap (4) through the catalyst tubes (2) and is taken off from the opposite end of the reactor (1) via the second cap (4) and a liquid heat transfer medium is passed through the intermediate space (5) around the catalyst tubes (2), where the reactor (1) has no tubes in the region of the passages (7), is proposed.

    104.
    发明专利
    未知

    公开(公告)号:BRPI0417856A

    公开(公告)日:2007-04-27

    申请号:BRPI0417856

    申请日:2004-12-21

    Applicant: BASF AG

    Abstract: A process is proposed for monitoring, controlling and/or regulating reactions of a fluid reaction mixture in the presence of a heterogeneous particulate catalyst, in a reactor having two or more thermoplates ( 1 ) arranged vertically and parallel to each other while in each case leaving a gap ( 2 ), the heterogeneous particulate catalyst being installed in the gaps ( 2 ) and the fluid reaction mixture being passed through the gaps ( 2 ), which comprises selecting as a regulation signal the temperature which is determined in one or more gaps ( 2 ), at two or more measurement points which are distributed over the height of each gap ( 2 ).

    105.
    发明专利
    未知

    公开(公告)号:DE102005049067A1

    公开(公告)日:2007-04-19

    申请号:DE102005049067

    申请日:2005-10-13

    Applicant: BASF AG

    Abstract: The invention proposes a tube bundle heat exchanger (R) for removing dissolved substances from a polymer solution (4) by means of degassing, having a bundle of tubes (1) which are arranged parallel to one another and vertically and are fastened at both ends in each case in a tube base (2), having a fixture (3) in each tube (1) which narrows the free passage cross section through the tube (1), wherein the tubes (1) are traversed by the polymer solution (4), and having a casing space (5) around the tubes (1) which is traversed by a liquid heat carrier (6), having deflecting plates (7) in the casing space (5) which are each arranged in cross-sectional planes of the tube bundle heat exchanger (R) and in each case form a deflecting region (8) for the heat carrier (6), which tube bundle heat exchanger (R) is characterized in that no tubes (1) are arranged in the deflecting regions (8), and in that all the fixtures (3) are of identical design.

    REACTOR FOR PARTIAL OXIDATION WITH HEAT-TRANSFER SHEET MODULES

    公开(公告)号:ZA200600576B

    公开(公告)日:2007-01-31

    申请号:ZA200600576

    申请日:2006-01-20

    Applicant: BASF AG

    Abstract: The invention relates to a reactor for partial oxidation of a fluid reaction mixture in the presence of a heterogeneous particulate catalyst. Said reactor comprises one or several cuboid heat-transfer sheet modules (1) which are each composed of two or several right-angled heat-transfer sheets (2), arranged parallel to each other such as to form a slit (3) which can be filled with the heterogeneous particulate catalyst and through which the fluid reaction mixture flows, the heat of reaction being absorbed by a heat carrier which flows through the heat-transfer sheets (2) and at least partially evaporates. Said reactor also comprises a mainly cylindrical envelope (4, 15, 16) which depressurizes the heat-transfer sheet modules and fully surrounds said modules, said envelope being composed of a cylinder casing (4) and of caps (15, 16), closing said casing at both ends, the longitudinal axis of which extends parallel to the plane of said heat-transfer sheets (2). Said reactor finally comprises one or several sealing elements (7, 23), arranged so that the fluid reaction mixture flows only through the slit (3), except through the reactor interior spaces, defined by the caps (15, 16).

    108.
    发明专利
    未知

    公开(公告)号:DE102004061770A1

    公开(公告)日:2006-07-06

    申请号:DE102004061770

    申请日:2004-12-22

    Applicant: BASF AG

    Abstract: Processes comprising: (a) providing a reactant comprising a component selected from the group consisting of o-xylene, naphthalene and mixtures thereof, and a gas comprising oxygen; (b) reacting the reactant and the gas in a reaction system, in the presence of a catalyst, to form phthalic anhydride; wherein the reaction system comprises: (i) at least two reaction zones, each reaction zone cooled with a coolant; and (ii) an intermediate cooling zone disposed between a first of the at least two reaction zones and a second of the at least two reaction zones; and wherein the coolant entering the first of the at least two reaction zones has a temperature which is more than 20° C. higher than a temperature of the coolant entering the second of the at leas two reaction zones.

    109.
    发明专利
    未知

    公开(公告)号:NO20062493L

    公开(公告)日:2006-06-09

    申请号:NO20062493

    申请日:2006-05-31

    Applicant: BASF AG

    Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor ( 1 ) having heat-exchange plates ( 2 ) which are arranged in the longitudinal direction of the reactor ( 1 ) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities ( 3, 4 ) for the heat transfer medium to the heat-exchange plates ( 2 ) and also gaps ( 5 ) between heat-exchange plates ( 2 ) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

    Reactor, for partial oxidation of fluid reaction mixture in presence of heterogeneous particulate catalyst, comprises square heat transfer sheet modules, sleeve, and sealing elements

    公开(公告)号:DE102004017151A1

    公开(公告)日:2005-10-27

    申请号:DE102004017151

    申请日:2004-04-07

    Applicant: BASF AG

    Abstract: Reactor comprises square heat transfer sheet modules which form a slit which can be filled with a heterogeneous particulate catalyst and through which the reaction mixture flows, a sleeve which depressurizes the heat transfer sheet modules and fully surrounds the modules, and sealing elements. The fluid reaction mixture flows only through the slit, except through the reaction interior spaces. Reactor comprises square heat transfer sheet modules (1) comprising two or more right-angled heat transfer sheets (2) parallel to each other, to form a slit (3) which can be filled with a heterogeneous particulate catalyst and through which the reaction mixture flows, a sleeve which depressurizes the heat transfer sheet modules and fully surrounds the modules, and sealing elements (7) arranged so that the fluid reaction mixture flows only through the slit, except through the reaction interior spaces, defined by the caps. The sleeve comprises a cylinder casing (4) and caps (15, 16) to close the casing at both ends.

Patent Agency Ranking