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    Oxidation of carbonaceous substances suspended or dissolved in a liquid resistant to oxidation
    33.
    发明专利
    Oxidation of carbonaceous substances suspended or dissolved in a liquid resistant to oxidation 未知

    公开(公告)号：GB950345A

    公开(公告)日：1964-02-26

    申请号：GB3886461

    申请日：1961-10-31

    Applicant: BASF AG

    Inventor： REICHERT MARTIN ,  UNTERSTENHOEFER LEO

    IPC: D21C11/00 ,  F23G5/32 ,  F23G7/00

    Abstract: 950,345. Oxidizing carbonaceous material in gaseous suspension. BADISCHE ANILIN- & SODA-FABRIK A.G. Oct. 31, 1961 [Nov. 4, 1960], No. 38864/61. Heading B1X. [Also in Division F4] Carbonaceous material in suspension in an oxidant-resistant liquid is oxidized in a chamber wherein the liquid is evaporated by the combustion of auxiliary fuel and the material is mixed with an oxygen-containing gas stream by an orifice plate. A slurry of carbon black in water is delivered to a combustion chamber 1 through an atomizer 8. Air and fuel are supplied tangentially at 9, 10 to burn in a chamber 7 surrounding the atomizer 8 and entrain the slurry in a whirling stream of hot gases. Additional air or oxygen introduced at 15, 16 cools the chamber walls and the carbon black burns in a ring of flame above an orifice plate 11 which causes the intimate mixing of the gases so that combustion is completed in a chamber 3. The chamber 3 discharges tangentially to a cylindrical separator 4 and the gases are fed to a heat exchanger 13 to preheat air or fuel, and used to concentrate the aqueous slurry in a vessel 5. A condenser 6 allows the liquid to be recovered.

    Composite expanded plastics
    35.
    发明专利
    Composite expanded plastics 未知

    公开(公告)号：GB1024331A

    公开(公告)日：1966-03-30

    申请号：GB169763

    申请日：1963-01-15

    Applicant: BASF AG

    Inventor： STASTNY FRITZ ,  UNTERSTENHOEFER LEO ,  GRAF FRITZ ,  LOEFFLER HANS-JUERGEN

    IPC: B29C44/34 ,  C08J9/35

    Abstract: An expanded resinous material consists of porous thermoplastic particles the interstices between the particles being filled with a foamed cured synthetic resin. Spherical porous particles of less than 10 mm. diameter may be prepared by incorporating a volatile liquid within particles of polyvinyl chloride, polyethylene, poly(methyl methacrylate), polyurethanes, polyethers, polystyrene or styrene copolymers with butadiene or acrylonitrile and heating the particles above the boiling-point of the liquid. Specified hardenable foamed synthetic resins are urea/formaldehyde, phenol/formaldehyde, melamine/formaldehyde, or polyurethane resins. These may include a surface-active agent and a curing agent. In preparing the material the particles should be tightly packed and the foam added to it. Fillers, e.g. granulated cork, asbestos or fibre waste may also be added. The material may be prepared batchwise by placing particles in a mould with closed side walls and a perforated upper closure, which allows air to pass through but prevents escape of the particles, and introducing the foam at an inlet in the lower part of the mould. The material may then be set in the mould or conveyed elsewhere. In a continuous process particles fed into chamber 2 from hopper 1 are carried by screw 3 to inlet 4 where the foam enters. More plastic may be introduced at a second inlet (not shown) in pipe 5. The foam may be agitated or vibrated and a pressure difference may be used to convey it along the pipe to the site where it is to be solidified. The product may contain 5-95% of the porous resin particles and may be coated, e.g. with asbestos. It can be used to make shaped articles, e.g. structural units or heat insulation. In Examples 1 and 2 particles of expanded polystyrene are mixed with a foamed urea-formaldehyde resin in the apparatus shown. In (1) the particles are expanded with sodium diisopropyl-naphthalene sulphonate, phosphoric acid and air. In (2) oxalic acid was added to the resin. In (3) polyvinyl chloride particles were incorporated into a polyether prepared from pentaerythritol monoglycidyl ether, 4 : 41-diamino-3 : 31-dimethyl-dicyclohexylmethane and H2O2.

    Process and apparatus for the production of unsaturated hydrocarbons from liquid hydrocarbons
    40.
    发明专利
    Process and apparatus for the production of unsaturated hydrocarbons from liquid hydrocarbons 未知

    公开(公告)号：GB910613A

    公开(公告)日：1962-11-14

    申请号：GB3283959

    申请日：1959-09-28

    Applicant: BASF AG

    Inventor： STEINHOFER ADOLF ,  BUSCHMANN KARL ,  UNTERSTENHOEFER LEO

    IPC: C07C4/04 ,  C10G9/38

    Abstract: Unsaturated hydrocarbons are produced by the pyrolysis of liquid hydrocarbons by spreading out the liquid hydrocarbon on the inner wall of a cylindrical or part conical chamber by means of a propellant gas introduced tangentially at 50-300 metres/sec. and at a temperature which does not effect appreciable cracking and passing a hot gas axially through the chamber cocurrently with the liquid hydrocarbon feed to effect pyrolysis. The liquid hydrocarbon may be a gasoline boiling in the range 80-220 DEG C., a middle oil boiling in the range 90-350 DEG C. or a higher boiling petroleum fraction and is introduced tangentially or radially. The propellant gas may be steam at 200-400 DEG C. mixed, if desired, with nitrogen or carbon dioxide, or hydrogen or carbon monoxide together with oxygen to provide the desired temperature, in amounts of 10-80% by volume of the steam, the total gas amounting to 0.2-1 kg. per kg. of hydrocarbon. The cracking gas may be hot steam, nitrogen or carbon dioxide or a combustion product at 800-1500 DEG C. The pressure may be 2-30 excess atmospheres. The product which may contain ethylene, propylene or acetylene is quenched with water or by decompression.

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