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    • 2. 发明授权
    • Process for the production of dimethyl ether useful as a propellant
    • 生产可用作推进剂的二甲醚的方法
    • US4560807A
    • 1985-12-24
    • US604943
    • 1984-04-27
    • Nobuyuki MuraiKazuya NakamichiMasayuki OtakeTakashi Ushikubo
    • Nobuyuki MuraiKazuya NakamichiMasayuki OtakeTakashi Ushikubo
    • C07C43/04B01J21/00C07B61/00C07C41/00C07C41/09C07C41/42C07C67/00C09K3/30
    • C07C41/42C07C41/09C09K3/30Y02P20/582Y10S203/20
    • A process for producing dimethyl ether useful as a propellant by dehydrating methanol and recovering dimethyl ether from the dehydrated product by distillation, which comprises(A) a reaction step wherein the dehydration reaction of methanol is conducted in a vapor phase under pressure of from 2 to 50 kg/cm.sup.2 G in the presence of a solid acid catalyst,(B) a first distillation step wherein the reaction mixture formed by the above reaction step is cooled and introduced into a pressurized distillation column under pressure of at least 5 kg/cm.sup.2 G; refined dimethyl ether is obtained as a side stream; substance having a boiling point lower than that of dimethyl ether is distilled from the top; and the bottom is withdrawn, and(C) a second distillation step wherein said bottom is introduced into a second distillation column under pressure lower than the pressure of the pressurized distillation column; unreacted methanol is recovered as a side stream from the second distillation column; substance having a boiling point lower than that of methanol is distilled from the top; and the bottom is withdrawn, whereby(D) the unreacted methanol recovered from the second distillation step is recycled to the reaction step.
    • 一种通过蒸馏除去甲醇和从脱水产物中回收二甲醚用作推进剂的二甲醚的方法,其包括(A)反应步骤,其中甲醇的脱水反应在压力为2〜 50kg / cm2G,(B)第一蒸馏步骤,其中由上述反应步骤形成的反应混合物冷却并在至少5kg / cm2G的压力下引入加压蒸馏塔; 得到精制二甲醚作为副产物; 沸点低于二甲醚的物质从顶部蒸馏出来; 和(C)第二蒸馏步骤,其中所述底部在低于加压蒸馏塔的压力的压力下引入第二蒸馏塔; 作为来自第二蒸馏塔的副产物流回收未反应的甲醇; 沸点低于甲醇的物质从顶部蒸馏出来; 并且将塔底取出,由此(D)将从第二蒸馏步骤回收的未反应甲醇再循环至反应步骤。
    • 10. 发明授权
    • Process for preparing an oxidation catalyst composition
    • 制备氧化催化剂组合物的方法
    • US4472527A
    • 1984-09-18
    • US473196
    • 1983-03-08
    • Masayuki OtakeMasayoshi MurayamaYuji Kawaragi
    • Masayuki OtakeMasayoshi MurayamaYuji Kawaragi
    • B01J27/198B01J35/00B01J35/10C07C51/215B01J27/14
    • C07C51/215B01J23/002B01J27/198B01J35/002B01J2523/00B01J35/1009B01J35/1014B01J35/1038B01J35/108
    • A process for preparing an oxidation catalyst composition comprises mixing at least one crystalline composite oxide, as the first component, selected from the group consisting of (i) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table A and (ii) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table B, an aqueous solution, as the second component, containing vanadium and phosphorus, and silica sol, as the third component, to form an aqueous slurry, spray-drying the slurry, and calcining the solid particles thereby obtained: TABLE A ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.sub..alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 15.7.degree. 19.6.degree. 24.2.degree. 27.1.degree. 28.8.degree. 30.4.degree. ______________________________________ TABLE B ______________________________________ X-ray diffraction peaks (Anticathode: Cu--K.sub..alpha.) 2.theta. (.+-.0.2.degree.) ______________________________________ 14.2.degree. 15.7.degree. 18.5.degree. 23.0.degree. 28.4.degree. 30.0.degree. 33.7.degree. 36.8.degree. ______________________________________
    • 制备氧化催化剂组合物的方法包括混合至少一种结晶复合氧化物作为第一组分,其选自(i)含有钒和磷的结晶复合氧化物,并显示出所鉴定的特征X射线衍射峰 在下表A中和(ii)含有钒和磷的结晶复合氧化物,并显示如下表B所示的特征X射线衍射峰,作为含有钒和磷的第二组分的水溶液和二氧化硅 溶胶作为第三组分,形成含水浆料,喷雾干燥浆料,并煅烧由此获得的固体颗粒:表AX-射线衍射峰 - (抗阴离子:Cu-Kα)-2θ(+/- 0.2 DEG)-15.7°-19.6°-24.2°-27.1°-28.8°-30.4° - 表BX射线衍射峰 - (反电极:Cu-Kα)-2(+/- 0.2°)-14.2° - 15.7°-18.5°-23.0 DEG -28.4°-30.0°-33.7°-36.8° -