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    PROCESS FOR DEWATERING WASTE WATER SLUDGES ON COMPARTMENT FILTER PRESSES
    11.
    发明专利
    PROCESS FOR DEWATERING WASTE WATER SLUDGES ON COMPARTMENT FILTER PRESSES 未知

    公开(公告)号：DE3063662D1

    公开(公告)日：1983-07-14

    申请号：DE3063662

    申请日：1980-05-05

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR ,  HESS KLAUS DR ,  LINTZ PETER ,  GOESELE WALTER DR

    IPC: B01D25/00 ,  B01D37/00 ,  B01D37/03 ,  C02F11/12

    Abstract: A process for dewatering sewage sludges, the dewatering characteristics of which have been improved by adding an organic flocculant, on a chamber filter press, wherein the greater part of the water in the flocculated sludges is removed by gravity filtration in a process step upstream of the chamber filter press, without application of a pressure difference, and the actual pressure filtration, on the chamber filter press, is only then carried out. In principle, commercial products can be used as the organic flocculant. These are water-soluble, macromolecular compounds which have been obtained by polymerization or copolymerization of acrylamide, acrylic cid and/or their salts, or of esters of acrylic acid or methacrylic acid with specifically modified alcohol components.

    Combustion process for removal of phosgene - by feeding waste gases into stable flame from air-inflammable gas mixts.
    12.
    发明专利
    Combustion process for removal of phosgene - by feeding waste gases into stable flame from air-inflammable gas mixts. 未知

    公开(公告)号：DE2344217A1

    公开(公告)日：1975-03-27

    申请号：DE2344217

    申请日：1973-09-01

    Applicant: BASF AG

    Inventor： HESS KLAUS DR ,  BURH EGON DIPL ING DR ,  KOTKAMP RUEDIGER DIPL ING DR

    IPC: B01D53/70 ,  B01D53/00

    Abstract: COCl2 (I) and/or other harmful Cl-contg. gases are now eliminated from off gases by continuous decompsn. in a high temp., HCl-resistant reactor at >900 degrees C. The reactor is additionally fed with not the stoichiometric amt. H2O for decompsn. of (I) and dwell time in the reactor is >0.1 sec, pref. 0.5-1 sec. Opt. part or all of required H2O and necessary temp. are simultaneously obtd. by burning an inflammable added to the gas mixt. opt. with added air. When the off gas contains large, e.g. >10%, amts. (I) mixt. is fed tangentially into combustion chamber which contains a stable support flame fed by an inflammable and air. When conc. of (I) is high formation of Cl is reduced by using a first stage decompsn. in a deficiency of air followed by second stage decompsn. with stoichiometric amt. air. Alternatively an excess of H2O can be added to the gas mixt. to reduce high concs. of (I).

    14.
    发明专利
    未知

    公开(公告)号：ES2129542T3

    公开(公告)日：1999-06-16

    申请号：ES94110462

    申请日：1994-07-05

    Applicant: BASF AG

    Inventor： HESS KLAUS DR ,  SPAHL ROLAND DR ,  HORN HANS CHRISTOPH DR ,  DORN INGO H DR ,  DINKHAUSER GUNTER ,  JOSCHEK HANS-INGO DR

    IPC: B01D53/70 ,  B01D53/86 ,  A62D3/00

    Abstract: Process for destroying organic halogen compounds, which are contained in dust-containing gases which have a carbon content of less than 0.6% by weight, by oxidative degradation with the aid of fixed catalysts suitable for this purpose, characterised in that a) the dust is separated off at 250 to 500 DEG C from the gases and the dust-free gas together with oxygen or an oxygen-containing gas is passed over the catalyst, or b) the dust is separated off below 250 DEG C, the organic halogen compounds are desorbed from the dust in an oxygen-containing gas stream at 250 to 500 DEG C and the gas stream is passed over the catalyst, or c) the dust-containing gas is passed over the catalyst in the presence of oxygen at 250 to 500 DEG C and the dust is then separated off.

    15.
    发明专利
    未知

    公开(公告)号：AT125465T

    公开(公告)日：1995-08-15

    申请号：AT92107010

    申请日：1992-04-24

    Applicant: BASF AG

    Inventor： HESS KLAUS DR ,  MORSBACH BERND ,  DREWS RONALD DR ,  BUECHELE WOLFGANG DR ,  SCHACHNER HELMUT DR

    IPC: B01D53/86 ,  B01D53/94 ,  B01J27/053

    Abstract: Catalyst containing metallic oxides, which in addition to oxides of titanium and/or zirconium, oxides of vanadium and/or niobium and oxides of molybdenum, tungsten and/or chromium, also contains sulphates of the alkaline earth metals, and which is used in a process for the oxidative breakdown of organic compounds in the waste gases from incinerator plants.

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