公开(公告)号：WO1997034690A1

公开(公告)日：1997-09-25

申请号：PCT/EP1997001202

申请日：1997-03-21

Applicant: SNAMPROGETTI S.P.A. ,  MIOLA, Cesare

Inventor： SNAMPROGETTI S.P.A.

IPC: B01J19/02

CPC classification number: B01J3/048 ,  B01J19/0073 ,  B01J19/02 ,  B01J2219/00256 ,  B01J2219/0204 ,  B01J2219/0286 ,  C07C273/04 ,  Y02P20/142 ,  Y02P20/149

Abstract: Method for the safety and extension of the operating life of pressure equipment comprising an internal chamber suitable for containing a process fluid, surrounded by a pressure-resistant body (1) equipped with weep-holes (2), consisting of a material subject to corrosion by contact with said process fluid during operation, coated inside with an anticorrosive lining (4) made up of several elements welded to each other, wherein said lining weldings (3) are completely isolated from contact with the process fluid of the normal operating run, by a coating with adjoining strips (or plates) (10, 10', 10", 10'''), of the same material as said lining (4) or other corrosion-resistant material weldable thereto, which are subsequently seal-welded on the edges to said lining (4) and to each other, characterized in that the arrangement and welding of the edges of these strips (10, 10', 10", 10''') are such as to create a network of underlying interstices (or meati) (9, 11), communicating with each other and with at least one weep-hole (2).

Abstract translation: 用于安全和延长压力设备的使用寿命的方法，包括适于容纳工艺流体的内部腔室，该内部腔室由装有防漏孔（2）的耐压体（1）包围，所述防漏体（1）由受腐蚀的材料组成 通过在操作期间与所述工艺流体接触，在其内部涂覆有由彼此焊接的多个元件组成的防腐衬里（4），其中所述衬里焊接件（3）与正常工作流程的过程流体完全隔离， 通过具有与所述衬里（4）相同材料或可焊接于其上的其它耐腐蚀材料的相邻条带（或板）（10,10'，10“，10”）的涂层，随后密封焊接 在所述衬里（4）和彼此之间的边缘上，其特征在于，这些条带（10,10'，10“，10”）的边缘的布置和焊接是为了创建一个底层 间隔（或肉）（9,11），与每个o沟通 至少有一个排水孔（2）。

公开(公告)号：WO1996009136A1

公开(公告)日：1996-03-28

申请号：PCT/EP1995003539

申请日：1995-09-08

Applicant: SNAMPROGETTI S.P.A. ,  MIOLA, Cesare ,  GRANELLI, Franco

Inventor： SNAMPROGETTI S.P.A.

IPC: B23P06/00

CPC classification number: C07C273/04 ,  B01J3/04 ,  B01J3/048 ,  B01J19/0073 ,  B01J19/02 ,  B01J2219/00256 ,  B01J2219/0236 ,  B01J2219/185 ,  B01J2219/1943 ,  B23K2101/12 ,  B23P6/00 ,  Y02P20/142 ,  Y02P20/149 ,  Y02P20/582

Abstract: The present invention relates to a method for repairing and restoring the functionality of equipment subjected to internal corrosion during its operation at high or medium pressure in a plant for the synthesis of urea. This method comprises: 1) the cleaning of the corroded area; 2) the formation, in the cleaned area, of suitable supporting and/or holding surfaces for the placement of new metallic lining; 3) the formation of new, anticorrosive, sealed off lining, obtained by positioning and welding flat elements and metallic plates suitably shaped and placed next to each other to become adapted to the internal profile of the equipment, so that the spaces and interstices below this new lining, all communicate with at least one weep-hole present in the pressure-resistant body. The entire repair is carried out through the manhole of the equipment and enables the restoring of its functionality for times similar to the normal duration of corresponding newly-constructed equipment.

Abstract translation: 本发明涉及一种用于在用于合成尿素的设备中在高压或中压操作期间内部腐蚀的设备的功能性的修复和恢复方法。 该方法包括：1）清洁被腐蚀区域; 2）在清洁区域内形成用于放置新金属衬里的合适的支撑和/或保持表面; 3）形成新的，防腐蚀的密封衬里，通过定位和焊接适当形状和放置在彼此相邻的扁平元件和金属板而获得，以适应设备的内部轮廓，使得在此之下的空间和间隙 新衬里，与防压体中存在的至少一个排水孔相通。 整个修理通过设备的人孔进行，并使其功能恢复类似于相应的新建设备的正常持续时间。

公开(公告)号：WO1987007259A1

公开(公告)日：1987-12-03

申请号：PCT/EP1987000241

申请日：1987-05-07

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

Inventor： SNAMPROGETTI S.P.A.

IPC: C07C43/04

CPC classification number: C07C41/06 ,  C07C43/046

Abstract: In the processes for the synthesis of alkyl-tert-butyl ethers by reacting the isobutene contained in a C4 charge with a high butadiene content with aliphatic alcohols, to the purpose of preventing polymerization phenomena in the step of separation of alkyl-tert-butyl ether product from the other unreacted components, the initial C4 charge and/or the aliphatic alcohol are submitted to an oxygen removal step, to the purpose of removing all of dissolved free oxygen, down to a maximum residual content of 1-2 ppm.

Abstract translation: 在通过使C4电荷中所含的异丁烯与高级丁二烯含量与脂族醇反应来合成烷基叔丁基醚的方法中，为了防止分离烷基叔丁基醚的步骤中的聚合现象 将来自其它未反应组分的产物，初始C4电荷和/或脂族醇进行除氧步骤，以除去所有溶解的游离氧，达到1-2ppm的最大残留量。

公开(公告)号：WO1997037929A1

公开(公告)日：1997-10-16

申请号：PCT/EP1997001803

申请日：1997-04-08

Applicant: SNAMPROGETTI S.P.A. ,  BASINI, Luca ,  DONATI, Gianni

Inventor： SNAMPROGETTI S.P.A.

IPC: C01B03/38

CPC classification number: C01B3/386 ,  B01J8/001 ,  B01J8/02 ,  B01J2208/00061 ,  B01J2208/00212 ,  B01J2208/0053 ,  C01B2203/0261 ,  C01B2203/0883 ,  C01B2203/1017 ,  C01B2203/1052 ,  C01B2203/1064 ,  C01B2203/1082 ,  C01B2203/1241 ,  C01B2203/1276 ,  C01B2203/1619

Abstract: Equipment for carrying out partial oxidation reactions characterized in that it essentially comprises four operating zones: a feeding zone (A); a distribution zone (B) with a constant or decreasing section along the axis of the equipment in the direction of the gas propagation, preferably in the form of a cylindrical, truncated-conical or truncated-pyramidal solid, consisting of one or more parts of said solid, optionally substituted by their external or internal envelope curved surface, wherein the angle ( alpha ) of the generatrix with the vertical parallel to said axis is between 0 and 65 DEG ; a reaction zone (C), consisting of a catalytic bed, with an increasing section along the axis of the equipment in the direction of the gas propagation, communicating with said distribution zone by means of a common transversal section, preferably in the form of a truncated-conical or truncated-pyramidal solid, consisting of one or more parts of said solid, optionally substituted by their external or internal envelope curve surface, in which the angle ( beta ) of the generatrix with the vertical parallel to said axis is between 5 and 65 DEG ; a gas expansion zone (D).

Abstract translation: 用于进行部分氧化反应的设备，其特征在于其基本上包括四个操作区：进料区（A）; 沿着设备的轴线沿气体传播方向具有恒定或减小的部分的分布区（B），优选为圆柱形，截头圆锥形或截顶锥形固体的形式，由一个或多个部分 所述固体，任选地被其外部或内部包络曲面取代，其中母线与垂直于所述轴线的垂直线的角度（α）在0和65度之间; 反应区（C），由催化床组成，沿着设备轴线在气体传播方向上增加的部分，通过共同的横截面与所述分配区连通，优选地以 截头圆锥形或截头锥形固体，由所述固体的一个或多个部分组成，任选地由其外部或内部包络线表面取代，其中母线与垂直平行于所述轴线的垂直角度（β）在5 和65度; 气体膨胀区（D）。

公开(公告)号：WO1997040121A1

公开(公告)日：1997-10-30

申请号：PCT/EP1997001994

申请日：1997-04-16

Applicant: SNAMPROGETTI S.P.A. ,  ROSSINI, Stefano ,  PICCOLI, Valerio

Inventor： SNAMPROGETTI S.P.A.

IPC: C10G25/00

CPC classification number: C10G25/00

Abstract: Process for selectively removing oxygenated contaminants from streams prevalently containing hydrocarbons with from 3 to 8 carbon atoms characterized in that it comprises an adsorption step wherein said contaminants are adsorbed by an adsorbent essentially consisting of silica gel at a temperature of between 0 and 150 DEG C and a pressure of between 1 and 20 atms and a regeneration step for removing the adsorbed substances by thermal treatment in a stream of inert gas carried out at a temperature of between 100 and 200 DEG C.

Abstract translation: 从含有3至8个碳原子的烃的流中选择性除去氧化污染物的方法，其特征在于它包括吸附步骤，其中所述污染物在基本上由硅胶组成的吸附剂在0至150℃的温度下吸附， 1〜20atms的压力和通过在100-200℃的温度下进行的惰性气体流中热处理除去吸附物质的再生步骤。

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。

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.

公开(公告)号：WO1997039994A1

公开(公告)日：1997-10-30

申请号：PCT/EP1997001993

申请日：1997-04-16

Applicant: SNAMPROGETTI S.P.A. ,  ROSSINI, Stefano ,  PICCOLI, Valerio

Inventor： SNAMPROGETTI S.P.A.

IPC: C07C07/12

CPC classification number: C07C7/12 ,  C10G25/00

Abstract: A process for selectively removing nitrogenated and/or sulfurated contaminants from streams prevalently containing hydrocarbons with from 3 to 8 carbon atoms characterized in that it comprises an adsorption step wherein said contaminants are adsorbed by an adsorbent essentially consisting of silica gel at a temperature of between 0 and 150 DEG C and at a pressure of between 1 and 20 atm and a regeneration step to remove the adsorbed substances by thermal treatment in a stream of inert gas carried out at a temperature of between 100 and 200 DEG C.

Abstract translation: 选择性地从含有3至8个碳原子的烃的流中除去含氮和/或硫化污染物的方法，其特征在于其包含吸附步骤，其中所述污染物被基本上由硅胶组成的吸附剂吸附，温度为0 在150℃和1〜20atm的压力下进行再生步骤，通过在100-200℃的温度下进行惰性气体的热处理除去吸附物质。

公开(公告)号：WO1996029532A1

公开(公告)日：1996-09-26

申请号：PCT/NO1996000058

申请日：1996-03-14

Applicant: KONGSBERG OFFSHORE A.S ,  SNAMPROGETTI S.P.A. ,  GJESSING, Harald, Ottar ,  HAUGEN, Finn, Germand ,  RADICIONI, Alessandro ,  CORBETTA, Giovanni ,  D'ALOISIO, Guido

Inventor： KONGSBERG OFFSHORE A.S ,  SNAMPROGETTI S.P.A.

IPC: F16L01/16

CPC classification number: F16L1/26 ,  E21B41/04

Abstract: Method for connecting underwater pipelines characterised by the following steps: installation of a pipeline (7) on a seabed fixed frame (2); laying of an outboard pipeline (10) by a lay barge; installation of a subsea winch (28) within the frame; actuation of the winch by a ROV (26A) to unwind the cable (33) of the winch, aided by a second ROV (26B) bringing and connecting the end of the cable to the outboard pipeline; winding of the cable and following deflection of the outboard pipeline up to the frame; installation of a metrology system (38) to define the distance and angular misalignment between the two pipelines ends to be connected; assembly of a connection system (50) with telescopic capabilities using the measurements of the metrology system and using a dedicated frame installed on board the support ship; installation of the connection system on the seabed fixed frame and connection of the connection system with the pipelines ends.

Abstract translation: 连接水下管线的方法，其特征在于以下步骤：在海底固定架（2）上安装管道（7）; 用趸船铺设舷外管道（10）; 在框架内安装海底绞盘（28）; 由第二ROV（26B）辅助由ROV（26A）驱动绞盘以解开绞盘的缆线（33），将第二ROV（26B）连接到外侧管道; 缠绕电缆，并将舷外管道偏转到框架; 安装计量系统（38）来定义要连接的两个管道端之间的距离和角度偏移; 使用测量系统的测量并使用安装在支撑船上的专用框架来组装具有伸缩能力的连接系统（50）; 连接系统安装在海床固定架上，连接系统与管道端连接。

公开(公告)号：WO1987000166A1

公开(公告)日：1987-01-15

申请号：PCT/EP1986000392

申请日：1986-07-02

Applicant: SNAMPROGETTI S.P.A. ,  FORLANI, Orfeo ,  PICCOLI, Valerio ,  NOTARI, Bruno

Inventor： SNAMPROGETTI S.P.A.

IPC: C07C11/02

CPC classification number: C07C1/20 ,  C07C2521/12 ,  C07C11/02

Abstract: A process for the production of tertiary olefins by means of the decomposition of the corresponding alkyl-tert.alkyl-ethers, by reacting said alkyl-tert.alkyl-ethers in the presence of a catalyst constituted by silica modified by the addition of alumina in an amount comprised within the range of from 0.1 to 1.5% by weight relatively to the silica.