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    11.
    发明专利
    未知

    公开(公告)号：DE1571711A1

    公开(公告)日：1971-04-29

    申请号：DE1571711

    申请日：1962-12-04

    Applicant: STAMICARBON

    Inventor： KARDAUN GEORG ,  GOETTSCH REIJER ,  MATHIAS KIERKELS PETER

    IPC: C10L5/04 ,  C10L5/08

    Abstract: In a method of briquetting particulate fuels or ores with a particulate binder such as bituminous coal which is fusible at a temperature lower than that at which the material to be briquetted, if fusible, fuses, the material to be briquetted is heated by contact with a hot gas to a temperature above the fusion temperature of the binder and the binder is heated by the same hot gas to a temperature below its fusion temperature so that when the material to be briquetted and the binder are mixed together the binder is fused and the mixture can be briquetted. The material to be briquetted may be coke breeze and the briquettes may be coked. If the material to be briquetted contains volatile matter degasification may occur during the heating of the material prior to being mixed with the binder and during the mixing.ALSO:In a method of briquetting particulate fuels or ores with a particulate binder such as bituminous coal which is fusible at a temperature lower than that at which the material to be briquetted, if fusible, fuses, the material to be briquetted is heated by contact with a hot gas to a temperature above the fusion temperature of the binder and the binder is heated by the same hot gas to a temperature below its fusion temperature so that when the material to be briquetted and the binder are mixed together the binder is fused and the mixture can be briquetted.

    PROCESS FOR THE PURIFICATION OF 2-PYRROLIDONE
    12.
    发明专利
    PROCESS FOR THE PURIFICATION OF 2-PYRROLIDONE 未知

    公开(公告)号：CA1178918A

    公开(公告)日：1984-12-04

    申请号：CA379403

    申请日：1981-06-09

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  JETTEN ARNOLD G M

    IPC: C07D207/26 ,  C07D201/16 ,  C07D207/267

    Abstract: 3199 In a distillation process pyrrolidone obtained from succinonitrile is purified by treating the impure liquid pyrrolidone with a strong base, fractionally distilling this product to yield, as distillate, polymerization grade pyrrolidone, mixing the 2-pyrrolidone-containing residue from the fractional distillation with water and an acid, and extracting purified pyrrolidone from the water/acid mixture. The latter purified pyrrolidone product is suitable for recycling to the pyrrolidone synthesis or to make other products.

    14.
    发明专利
    未知

    公开(公告)号：DE2428203A1

    公开(公告)日：1975-01-09

    申请号：DE2428203

    申请日：1974-06-11

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  ROOIJ ABRAHAM HERMANUS DE

    IPC: B01D9/02 ,  C07D201/16 ,  C07D223/10

    Abstract: Polymerizable quality epsilon -caprolactam having an alkalinity of less than 0.05 meq. per kg. of lactam is produced in the improved disclosed process which includes extracting an aqueous lactam-rich solution with an organic solvent having a high distribution coefficient for the lactam with respect to the aqueous solution, and evaporating the lactam-rich organic solvent solution and recovering by distillation the lactam. Evaporation of the organic solvent requires considerably less thermal energy than evaporation of a similar aqueous solution.

    16.
    发明专利
    未知

    公开(公告)号：DE2252891A1

    公开(公告)日：1973-05-03

    申请号：DE2252891

    申请日：1972-10-27

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  VOS HERMAN MARIA ALPHONSUS

    IPC: C07D201/04 ,  C07D201/16 ,  C07D41/06

    Abstract: 1399000 #-Caprolactam STAMICARBON NV 27 Oct 1972 [29 Oct 1971 25 Aug 1972] 49733/72 Heading C2C #-Caprolactam obtained by the Beckmann rearrangement of cyclohexanone oxime with a sulphuric acid, oleum or SO 3 catalyst followed by dilution of the Beckmann rearrangement product with water and/or partial neutralization of the product by the addition of ammonia and/or a sulphuric acid salt of ammonia, extraction with a substantially water-immiscible organic solvent for the product lactam and removal of the solvent is recovered by neutralizing the lactam-containing solution with aqueous ammonia to a pH of at least 4À5 when measured at 20‹ C. to form an emulsion of an aqueous ammonium sulphate solution in the organic solvent, washing the said emulsion, optionally after settling of the emulsion and separating off the thereby-formed supernatant phase, with demineralized water in a weight ratio of 4 to 20 parts emulsion per 1 part of water, and extracting the thus-treated laetam-containing solvent with water, optionally treating the resulting aqueous lactam solution with cation and anion exchangers, and evaporating water from the said aqueous lactam solution. The #-caprolactam obtained contains less than 5 m.eq. of ionic substances per kg. of lactam.

    17.
    发明专利
    未知

    公开(公告)号：MX4280E

    公开(公告)日：1982-03-11

    申请号：MX584477

    申请日：1977-06-27

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  ZWART RUDOLF LAMBERTUS

    IPC: C01C1/24 ,  C07D201/16 ,  C07D223/10

    Abstract: The process is directed to recovering epsilon -caprolactam from a reaction mixture containing epsilon -caprolactum and sulfuric acid by separating the caprolactam from the sulfuric acid by an extraction. Extraction includes the steps of neutralizing a part of said sulfuric acid with ammonia, ammonium sulfate, ammonium hydrogen sulfate or mixture thereof, to form an ammonium salt of at least part of said sulfuric acid as a neutralization product, thermally decomposing a part of the ammonium salt formed to produce a gaseous mixture of ammonia and sulfur dioxide and contacting another portion of the neutralization product with said gaseous mixture to produce ammonium hydrogen sulfate, ammonium sulfate or both, and neutralizing at least a part of the sulfuric acid in the reaction mixture with said ammonium hydrogen sulfate, ammonium sulfate or both.

    PROCESS FOR RECOVERING (EPSILON)-CAPROLACTAM FROM AN (EPSILON)- CAPROLACTAM/SULPHURIC ACID REACTION MIXTURE
    19.
    发明专利
    PROCESS FOR RECOVERING (EPSILON)-CAPROLACTAM FROM AN (EPSILON)- CAPROLACTAM/SULPHURIC ACID REACTION MIXTURE 未知

    公开(公告)号：CA1085836A

    公开(公告)日：1980-09-16

    申请号：CA281360

    申请日：1977-06-24

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  ZWART RUDOLF L

    IPC: C01C1/24 ,  C07D201/16 ,  C07D223/10

    Abstract: The process is directed to recovering .epsilon.-caprolactam from a reaction mixture containing .epsilon.-caprolactum and sulfuric acid by separating the caprolactam from the sulfuric acid by an extraction. Extraction includes the steps of neutralizing a part of said sulfuric acid with ammonia, ammonium sulfate, ammonium hydrogen sulfate or mixture thereof, to form an ammonium salt of at least part of said sulfuric acid as a neutralization product, thermally decomposing a part of the ammonium salt formed to produce a gaseous mixture of ammonia and sulfur dioxide and contacting another portion of the neutralization product with said gaseous mixture to produce ammonium hydrogen sulfate, ammonium sulfate or both, and neutralizing at least a part of the sulfuric acid in the reaction mixture with said ammonium hydrogen sulfate, ammonium sulfate or both.

    20.
    发明专利
    未知

    公开(公告)号：DE2728606A1

    公开(公告)日：1977-12-29

    申请号：DE2728606

    申请日：1977-06-24

    Applicant: STAMICARBON

    Inventor： GOETTSCH REIJER ,  ZWART RUDOLF LAMBERTUS

    IPC: C01C1/24 ,  C07D201/16

    Abstract: The process is directed to recovering epsilon -caprolactam from a reaction mixture containing epsilon -caprolactum and sulfuric acid by separating the caprolactam from the sulfuric acid by an extraction. Extraction includes the steps of neutralizing a part of said sulfuric acid with ammonia, ammonium sulfate, ammonium hydrogen sulfate or mixture thereof, to form an ammonium salt of at least part of said sulfuric acid as a neutralization product, thermally decomposing a part of the ammonium salt formed to produce a gaseous mixture of ammonia and sulfur dioxide and contacting another portion of the neutralization product with said gaseous mixture to produce ammonium hydrogen sulfate, ammonium sulfate or both, and neutralizing at least a part of the sulfuric acid in the reaction mixture with said ammonium hydrogen sulfate, ammonium sulfate or both.

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