4.
    发明专利
    未知

    公开(公告)号:NO178629C

    公开(公告)日:1996-05-02

    申请号:NO892640

    申请日:1989-06-26

    Applicant: DEGUSSA

    Abstract: Bitumen granules which contain 0.5 to 6 % by weight of a powdering and separating agent such as, for example, synthetic silica or carbon black, is produced by atomising hot liquid bitumen in a known spray mixer and simultaneously introducing the powdering and separating agent via the cold air stream into the spray mixer.

    DEVICE AND PROCESS FOR REMOVING WASHCOAT REMAINING IN THE DUCTS OF NEWLY COATED MONOLITHIC AND HONEYCOMBED CATALYST SUPPORTS AND USE OF SAID DEVICE

    公开(公告)号:CA1330871C

    公开(公告)日:1994-07-26

    申请号:CA590063

    申请日:1989-02-03

    Applicant: DEGUSSA

    Abstract: An apparatus and a method are disclosed for the removal and the recovery of washcoat remaining in the channels of freshly coated monolithic or honeycombed catalytic carriers. The carrier is inserted into a chamber from above and tightly fitted therein at least with the lowest part of the carrier therein. The chamber is fitted with a collection area and a runoff located thereunder. The runoff leads via a shutoff valve into a separation vessel under a vacuum. The opening and closing of the shutoff valve causes air to be aspirated through the carrier channels, which are open at the top or are gradually opened by means of a slotted slide. This action causes the washcoat remnants to he transferred into the separation vessel, where they can be collected in the sump and are then pumped off. The apparatus can be used in systems for manufacturing catalysts for cleaning exhaust gases.

    6.
    发明专利
    未知

    公开(公告)号:BR9007360A

    公开(公告)日:1992-04-28

    申请号:BR9007360

    申请日:1990-05-05

    Applicant: DEGUSSA

    Abstract: In a process for manufacturing gas-tight aluminium tubes suitable for carrying out catalytic high-temperature reactions, powdered aluminium oxide is mixed with water, a binder and a plasticizer, and the mixture is deformed by drawing a hank into a cylindrical green body, which is then deformed in at least two places so that the circular cross-section of the tube becomes approximately ellipsoidal. The deformed green body is dried and sintered at 1740C. Excellent mixing of the gas in the tube is achieved as a result of the constrictions in the cross-section.

    PROCESS AND APPARATUS FOR PRODUCING HYDROGEN CYANIDE

    公开(公告)号:CA1213123A

    公开(公告)日:1986-10-28

    申请号:CA449530

    申请日:1984-03-14

    Applicant: DEGUSSA

    Abstract: An increase in the throughput in the BMA-furnace or a BMA furnace chamber, respectively, without modification of the existing design and dimensions is achieved by converting the lower stage of the cooling head to a short-tube bundle-type heat exchanger whilst retaining the temperature profile needed for the process by the denser or less dense arrangement of the ceramic tubes in the furnace chamber and/or by using ceramic tubes having different inner and outer geometry and/or structure.

    10.
    发明专利
    未知

    公开(公告)号:BR8500026A

    公开(公告)日:1985-08-13

    申请号:BR8500026

    申请日:1985-01-04

    Applicant: DEGUSSA

    Abstract: A method for compacting and/or filling of pulverulent materials into rigid or flexible containers in the course of which the pulverulent material is filled into the container with the help of a pipe in relative motion to the container, and separated from the gas, for example air, transported along with the help of a separation device which surrounds the pipe and is fitted to the container cross section. The pulverulent material is retained in the container with the help of the separation device, while the gas escapes through the gas permeable separation device.

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