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    PROCESS FOR THE SYNTHESIS OF METHYL-TERT-ALKYL ETHERS WITH SUPPRESSION OF CORROSION
    31.
    发明申请
    PROCESS FOR THE SYNTHESIS OF METHYL-TERT-ALKYL ETHERS WITH SUPPRESSION OF CORROSION 审中-公开
    用于抑制腐蚀的甲基叔丁基醚的合成方法

    公开(公告)号：WO1987007260A1

    公开(公告)日：1987-12-03

    申请号：PCT/EP1987000257

    申请日：1987-05-07

    Applicant: SNAMPROGETTI S.P.A. ,  TROTTA, Roberto ,  ANCILLOTTI, Francesco ,  PESCAROLLO, Ermanno

    Inventor： SNAMPROGETTI S.P.A.

    IPC: C07C43/04

    CPC classification number: C07C41/06 ,  C07C43/046

    Abstract: Methyl-tert-alkyl ethers coming from a synthesis section are separated from unreacted hydrocarbons by means of a rectification operation, in which the unreacted hydrocarbons are drawn as overhead fraction, in the form of an azeotropic mixture with methanol. To the purpose of removing methanol, and of therefore allowing a suitable use of said unreacted hydrocarbons, the azeotropic mixture is washed with water inside a washing column, which gets very rapidly corroded. The invention solves the corrosion problem by resorting to the removal of oxygen from the hydrocarbon charge and/or of methanol, before these are sent to the synthesis.

    Abstract translation: 来自合成段的甲基 - 叔烷基醚通过精馏操作与未反应的烃分离，其中将未反应的烃作为塔顶馏分作为与甲醇的共沸混合物的形式。 为了除去甲醇，因此允许合适使用所述未反应的烃，共沸混合物用洗涤塔内的水洗涤，洗涤塔被非常快速地腐蚀。 本发明通过在将烃送入合成之前，从烃装料和/或甲醇中除去氧气来解决腐蚀问题。

    EXTENDERS FOR GASOIL FOR AUTOMOTIVE USE
    32.
    发明申请
    EXTENDERS FOR GASOIL FOR AUTOMOTIVE USE 审中-公开
    用于汽车用于汽车的扩展器

    公开(公告)号：WO1986003511A1

    公开(公告)日：1986-06-19

    申请号：PCT/EP1985000692

    申请日：1985-12-09

    Applicant: SNAMPROGETTI S.P.A. ,  ROMANO, Ugo ,  TERZONI, Giuseppe ,  ANCILLOTTI, Francesco ,  GIAVAZZI, Fulvio

    Inventor： SNAMPROGETTI S.P.A.

    IPC: C10L01/02

    CPC classification number: C10L1/026

    Abstract: Extenders for gasoil for automotive use, and method for their preparation. The gasoil extenders are selected from the class of methane dioxygenated derivatives, of general formula (I), wherein R1 and R2, equal to or different from each other, are straight or branched alkyl groups, having from 1 to 20, preferably from 2 to 10, carbon atoms, or alkoxyalkyl groups of formula R1-(O-R)x-, wherein R is an alkyl group containing from 2 to 6 carbon atoms, and R1 is an alkyl group containing from 1 to 20, preferably from 2 to 10, carbon atoms, x being comprised within the range of from 1 to 10. The preparation of gasoil extenders takes place by means of the reaction of an alcohol or of a mixture of alcohols with formaldehyde in the presence of an acidic catalyst, homogeneous or heterogeneous in the reaction medium.

    34.
    发明专利
    未知

    公开(公告)号：ES2037200T3

    公开(公告)日：1993-06-16

    申请号：ES88201051

    申请日：1988-05-25

    Applicant: SNAMPROGETTI S.P.A. ,  TECSA S.R.L. ,  ALLWEILER ITALIA S.P.A.

    Inventor： BOSONI, MARCO ,  BRUSONI, ROBERTO ,  FIORENTINI, CARLO ,  FRACASSI, PIETRO

    IPC: A62C5/02 ,  A62C5/00 ,  B01F5/04 ,  B01F15/04 ,  G05D11/03

    Abstract: Device for continuously preparing constant-proportions solutions with variable flow rates, particularly suitable for preparing foam-extinguisher solutions for fire-fighting systems, comprising a motor device (21), operated by the energy supplied by the same pressure of fire-fighting water network, constituted by a volumetric screw-pump (24), which is made to work in reverse mode, and in its turn is mechanically connected with one or more volumetric pump(s) which meter the fire-fighting foam-extinguisher liquid into the network water.

    37.
    发明专利
    未知

    公开(公告)号：DE8113968U1

    公开(公告)日：1984-10-25

    申请号：DE8113968

    申请日：1981-05-12

    Applicant: SNAMPROGETTI S.P.A., MAILAND / MILANO, IT

    IPC: B05B1/06 ,  B01D1/06 ,  B01D1/22 ,  B05B1/34 ,  B67D3/00 ,  B67D7/02 ,  B67D99/00 ,  F17D1/00 ,  F17D1/08 ,  F28D3/04 ,  F28D5/02

    Abstract: Improved apparatus for distributing a liquid in film form in the interior of vertical tubes in which a counterflow or cocurrent flow of liquid-vapor takes place. The apparatus includes a cylindrical body having an annular ledge and helical grooves on its peripheral surface, and wherein the cylindrical body is slightly tapered downwardly and inwardly to enable it to be easily introduced into the tube and to enable it to be freely rotated about its own vertical central axis. In the case of counterflow circulation, the cylindrical body has a blind laterally perforated vent tube on its top surface. In each instance the rotation of the body is effected by the liquid being distributed to inhibit the formation of deposits of solids from the liquid being distributed on the inner wall of the vertical tube.

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    40.
    发明专利
    "ATAJADIZO DE DESCONTAMINACION ACTIVADO". 未知

    公开(公告)号：ES266668U

    公开(公告)日：1983-03-01

    申请号：ES266668

    申请日：1982-06-29

    Applicant: SNAMPROGETTI S.P.A.

    IPC: E02B15/04 ,  E02B15/06

    Abstract: Atajadizo de descontaminación activado, particularmente para, la descontaminación de superficies de agua contaminadas por petróleo bruto y sus derivados o por sustancias oleosas de otra naturaleza, comprendiendo una sustancia activa consistente en un 10 - 90 % de un soporte de bajo peso específico, un 9 a un 80 % de un activante tensioactivo, y un 1 a un 10 % de un agente bañante, caracterizado porque está constituido por tres vainas de tejido reticular rellenas con dicha sustancia activa y vinculadas mediante abrazaderas a un material expandido provisto de tres acanaladuras constitutivas del alojamiento para las vainas.

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