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    Separating vaporous aldehydes from offgas obtained in the oxo process
    1.
    发明授权
    Separating vaporous aldehydes from offgas obtained in the oxo process 失效
    从OXO工艺中获取的废弃物中分离出的蒸气惰性物质

    公开(公告)号：US3455091A

    公开(公告)日：1969-07-15

    申请号：US3455091D

    申请日：1967-11-21

    Applicant: BASF AG

    Inventor： HERBER HORST ,  HAGEN WERNER ,  SCHROEDER WOLFGANG

    IPC: C07C27/22 ,  C07C29/16 ,  C07C45/50 ,  C07C45/78 ,  B01D53/14 ,  B01D47/00

    CPC classification number: C07C45/783 ,  C07C27/22 ,  C07C29/16 ,  C07C45/50 ,  C07C31/10 ,  C07C31/125 ,  C07C47/02

    Abstract: 1,195,877. Separation of vaporous aldehydes obtained in the oxo process. BADISCHE ANILIN- & SODA FABRIK A.G. 29 Nov., 1967 [30 Nov., 1966], No. 54282/67. Heading C2C. Vaporous aldehydes are separated from offgas formed in the oxo process, by scrubbing the offgas with an oxonation product boiling above 95‹ C. and/or a hydrogenated oxonation product boiling above 95‹ C. Preferably 0À1-2 kg. of the scrubbing material is used per cubic metre of offgas to be scrubbed. Examples recover (a) propionaldehyde by scrubbing the oxo product obtained from ethylene, carbon monoxide and water with a mixture comprising npropanol, para-propionaldehyde and higher boiling condensation products of propionaldehyde, (b) n - butyraldehyde and isobutyraldehyde. Valeraldehyde is also particularly suitable for separation by the method of the invention.

    Production of 1,3-diene copolymers containing chlorine
    4.
    发明专利
    Production of 1,3-diene copolymers containing chlorine 未知

    公开(公告)号：GB1149745A

    公开(公告)日：1969-04-23

    申请号：GB3830166

    申请日：1966-08-26

    Applicant: BASF AG

    Inventor： SLIWKA ARTUR ,  SCHROEDER WOLFGANG ,  NAARMANN HERBERT

    IPC: C08F214/14 ,  C08F236/04

    Abstract: 1,149,745. Copolymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 26 Aug., 1966 [28 Aug. 1965], No. 38301/66. Heading C3P. Copolymers containing chlorine may be prepared by copolymerizing a 1,3-diene with 2- chloroprene under conventional polymerization conditions. The diene may be butadiene or isoprene, and other monoolefinically unsaturated compounds, e.g. vinyl esters, ethers and ketones, unsaturated acids and esters, amides, nitriles and anhydrides thereof, and vinyl aromatic and heterocyclic compounds, may also be copolymerized. Polymerization may be effected in the presence of Ziegler catalysts, peroxides and azo compounds, redox systems, transition metal chelates and mixtures of cobalt and nickel carbonyls with aluminium halides and complexing agents or alkyl aluminium compounds; in organic liquid media or in aqueous emulsion or suspension in the presence of conventional emulsifiers and suspending agents. Extensive lists of comonomers, catalysts and conventional media and agents are given and examples describe the copolymerization of (1) butadiene and (2) isoprene with 2-chloropropene in n-hexane and paraffin oil in the presence of cobalt acetylacetonate and diethyl aluminium chloride, of (3) butadiene and 2-chloropropene in aqueous dispersion in the presence of a sodium paraffin sulphonate and gold acetylacetonate, and of (4) butadiene, 2-chloropropene, styrene and acrylonitrile in aqueous dispersion in the presence of a sodium paraffin sulphonate and potassium persulphate.

    Separation of carbon dioxide from gases containing carbon dioxide under pressure
    5.
    发明专利
    Separation of carbon dioxide from gases containing carbon dioxide under pressure 未知

    公开(公告)号：GB1092661A

    公开(公告)日：1967-11-29

    申请号：GB1286265

    申请日：1965-03-26

    Applicant: BASF AG

    Inventor： LUEHDEMANN ROLF ,  SCHROEDER WOLFGANG ,  HELMS ALFRED

    IPC: C01B32/50 ,  C10K1/08 ,  C10K1/14

    Abstract: CO2 is removed from gases under pressure by washing the gases first with an aqueous solution of a trialkenolamine of pH 8-10 at 50-80 DEG C., and then with an aqueous solution of an alkali metal salt of an amino acid, of pH 10-12, at 20-50 DEG C. The alkanolamine may be triethanolamine, of 25-45% concentration, and is regenerated by multi-stage flashing to atmospheric pressure, the gas from the first flashing being recompressed and recycled to the scrubbing tower. The alkali metal salt may be potassium N-methyl-a -aminopropionate, of 25-50% concentration, and is regenerated by flashing to atmospheric pressure and then stripping with steam, with heat-exchange between the solutions before and after stripping. The mixture of CO2 and steam produced is used to heat directly the alkanolamine solution after final flashing. The initial gases may be at 5-300 atm. pressure, with a minimum partial pressure of CO2 of 1.5 atm.ALSO:CO2 is removed from gases under pressure by washing the gases with an aqueous solution of an alkali metal salt of an amino acid, of pH 10 - 12, at 20-50 DEG C. The gas are first given a coarse washing with an aqueous solution of a trialkanolamine, of pH 8-10, at 50-8 DEG C. The salt may be potassium N-methyl-a -aminopropionate of 25-50% concentration, and is regenerated by flashing to atmospheric pressure and then stripping with steam, with heat exchange between the solutions before and after stripping.

    Regeneration of solutions loaded with carbon dioxide
    8.
    发明专利
    Regeneration of solutions loaded with carbon dioxide 未知

    公开(公告)号：GB1067250A

    公开(公告)日：1967-05-03

    申请号：GB3486564

    申请日：1964-08-26

    Applicant: BASF AG

    Inventor： SCHROEDER WOLFGANG

    IPC: B01D19/00 ,  C10K1/12

    Abstract: 1,067,250. Regeneration of solutions used for absorbing carbon dioxide. BADISCHE ANILIN-& SODA-FABRIK A. G. Aug. 26, 1964 [Aug. 27, 1963], No. 34865/64. Heading BIB. A solution which has been used for the removal of carbon dioxide from gases in an absorber A is regenerated by flashing the solution to atmospheric pressure in one, two or three flash vessels E and then heating it in a steam heated desorber D. The hot vapours saturated with steam leaving the top of the desorber are recycled through a line 7 to the flash vessel in which the solution has been flashed to atmospheric pressure so bringing them into direct heat exchange with the cold solution in the flash vessel. Prior to introduction into the desorber the solution is preheated in an indirect heat exchanger W. The regenerated hot solution flowing from the bottom of the desorber passes through the exchanger W and a cooler K back to the top of the absorber. The vapours liberated in the heat exchanger may be united with those from the desorber in line 7. About 80% by volume of the solution degassed by flashing is recirculated through line 3 to the middle portion of the absorber for preliminary washing of the gases. Examples of solutions are aqueous triethanolamine and aqueous solutions of the potassium salt of N-methyl-amino propionic acid and of potassium arsenite.

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