公开(公告)号：US6010669A

公开(公告)日：2000-01-04

申请号：US793928

申请日：1997-03-21

Applicant: Cesare Miola ,  Franco Granelli

Inventor： Cesare Miola ,  Franco Granelli

IPC: B01J3/00 ,  B01J3/04 ,  B01J19/00 ,  B01J19/02 ,  B23K31/02 ,  B23P6/00 ,  C07C273/04

CPC classification number: C07C273/04 ,  B01J19/0073 ,  B01J19/02 ,  B01J3/04 ,  B01J3/048 ,  B23P6/00 ,  B01J2219/00256 ,  B01J2219/0236 ,  B01J2219/185 ,  B01J2219/1943 ,  B23K2201/12 ,  Y02P20/142 ,  Y02P20/149 ,  Y02P20/582

Abstract: 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. The method includes the cleaning of the corroded area, the formation of suitable supporting and/or holding surfaces for the placement of a new metallic lining, the formation of a new anticorrosive sealed off lining, obtained by positioning and welding flat elements and metallic plates which are suitably shaped and placed next to each other to become adapted to the internal profile of the equipment. 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: PCT No.PCT / EP95 / 03539 Sec。 371日期1997年3月21日 102（e）1997年3月21日PCT PCT 1995年9月8日PCT公布。 出版物WO96 / 09136 日期1996年3月28日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。 该方法包括清洁被腐蚀区域，形成用于放置新的金属衬里的合适的支撑和/或保持表面，形成通过定位和焊接扁平元件和金属板获得的新的防腐密封衬 适当地成形并且彼此相邻放置以适应于设备的内部轮廓。 这个新衬里下面的空间和间隙都与耐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：US5994258A

公开(公告)日：1999-11-30

申请号：US100243

申请日：1998-06-19

Applicant: Franco Buonomo ,  Domenico Sanfilippo ,  Rodolfo Iezzi ,  Emilio Micheli

Inventor： Franco Buonomo ,  Domenico Sanfilippo ,  Rodolfo Iezzi ,  Emilio Micheli

IPC: B01J8/00 ,  B01J8/26 ,  B01J23/26 ,  C07C5/333 ,  C07C15/46 ,  B01J23/02

CPC classification number: B01J23/26 ,  B01J8/0055 ,  B01J8/26 ,  C07C5/3332 ,  B01J2208/00274 ,  B01J2208/00548 ,  C07C2521/04 ,  C07C2523/04 ,  C07C2523/14 ,  C07C2523/26

Abstract: Catalytic system for dehydrogenating ethylbenzene to styrene, containing chromium oxide, tin oxide, at least one oxide of an alkaline metal (M) and an alumina carrier, in delta or theta phase or in a mixture of delta+theta or theta+alpha or delta+theta+alpha phases, modified with silica, and characterized in that:the chromium, expressed as Cr.sub.2 O.sub.3, is in a quantity of between 6 and 30% by weight;the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5% by weight;the alkaline metal, expressed as M.sub.2 O, is in a quantity of between 0.4 and 3% by weight,the silica is in a quantity of between 0.08 and 3% by weight, the complement to 100 being alumina.

Abstract translation: 用于将乙苯脱氢为含有氧化铬，氧化锡，至少一种碱金属（M）和氧化铝载体的氧化物的苯乙烯在δ或θ相中或在δ+θ或θ+α或δ的混合物中的催化体系 +θ+α相，用二氧化硅改性，其特征在于：以Cr 2 O 3表示的铬的量为6至30重量％; 以SnO表示的锡的量为0.1至3.5重量％; 以M 2 O表示的碱金属的量为0.4-3重量％，二氧化硅的量为0.08-3重量％，补体为100为氧化铝。

公开(公告)号：US5763660A

公开(公告)日：1998-06-09

申请号：US594490

申请日：1996-01-31

Applicant: Carlo Rescalli

Inventor： Carlo Rescalli

IPC: C07C273/04 ,  C07C273/16 ,  C07C275/00

CPC classification number: C07C273/04 ,  Y02P20/582

Abstract: Improved yield process for urea synthesis by starting from ammonia and carbon dioxide, comprising a reaction zone under high pressure and temperature conditions, a section wherein a portion of unreacted ammonia and carbon dioxide are stripped and recycled to the reactor, which section operates under substantially the same reactor pressure, and a subsequent section, operating under medium and/or low pressure conditions, for urea purification and simultaneous recovery of residual carbon dioxide and a portion of residual ammonia contained in the effluent stream from the stripping section, as an aqueous solution of ammonium carbamate, in which said aqueous ammonium carbamate solution is either totally or partially fed to said stripping section. Said process makes it possible a conversion of carbon dioxide into urea to be obtained in the reactor which is higher than 70%.

公开(公告)号：US5563299A

公开(公告)日：1996-10-08

申请号：US383317

申请日：1995-02-03

Applicant: Renato Paludetto ,  Gianni Donati ,  Alfredo Orsi ,  Gianni Pandolfi ,  Roberto Trotta ,  Maura Brianti

Inventor： Renato Paludetto ,  Gianni Donati ,  Alfredo Orsi ,  Gianni Pandolfi ,  Roberto Trotta ,  Maura Brianti

IPC: C07C43/04 ,  C07C11/08 ,  C07C41/06 ,  C07C41/34

CPC classification number: C07C41/06 ,  C07C41/36 ,  Y02P20/125

Abstract: An integrated process for the simultaneous production of alkyl tert-butyl ethers and 1-butene, comprising feeding a C.sub.4 hydrocarbon stream to an etherification unit and recycling the remaining stream to the same unit after possible separation of the 1-butene and treatment in an isomerization section to convert the remaining butenes into isobutene, a molecular sieve separation unit operating with the hydrocarbons in the vapour phase being incorporated into the cycle.

Abstract translation: 一种用于同时生产烷基叔丁基醚和1-丁烯的综合方法，包括将C4烃流进料到醚化装置，并将剩余物流再循环至相同的单元，之后可能分离出1-丁烯并进行异构化处理 将剩余的丁烯转化成异丁烯，将与气相中的烃一起操作的分子筛分离装置并入循环中。

公开(公告)号：US5510541A

公开(公告)日：1996-04-23

申请号：US201991

申请日：1994-02-25

Applicant: Renata Patrini ,  Mario Marchionna

Inventor： Renata Patrini ,  Mario Marchionna

IPC: C07C41/06

CPC classification number: C07C41/06

Abstract: Mono-alkadienyl alkyl ethers and di-alkadienyl alkyl ethers are prepared by telomerization of a conjugated diene, by causing said conjugated diene to react with an aliphatic alcohol or an aliphatic diol respectively, by operating in an aqueous/organic biphasic liquid system, in the presence of a catalytic system formed by:(a) a palladium salt or complex;(b) an alkyl-, alkylcycloalkyl-, or alkylarylphosphine ligand, bearing an acidic or neutral hydrophylic moiety, having the formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, x and y are as defined in the disclosure; and(c) an either inorganic or organic base.

Abstract translation: 单链二烯基烷基醚和二链二烯基烷基醚通过共轭二烯的调聚制备，通过使所述共轭二烯通过在水/有机双相液体体系中操作而分别与脂族醇或脂族二醇反应， 存在由以下物质形成的催化体系：（a）钯盐或络合物; （b）具有下式的具有酸性或中性亲水部分的烷基 - ，烷基环烷基 - 或烷基芳基膦配体，其中R1，R2，R3，x和y如本公开所定义; 和（c）无机或有机碱。

公开(公告)号：US5308822A

公开(公告)日：1994-05-03

申请号：US27944

申请日：1993-03-08

Applicant: Rodolfo Iezzi ,  Andrea Bartolini ,  Franco Buonomo

Inventor： Rodolfo Iezzi ,  Andrea Bartolini ,  Franco Buonomo

IPC: B01J23/08 ,  B01J23/02 ,  B01J37/08 ,  B01J37/14 ,  B01J37/18 ,  C07C5/32 ,  C07C5/333 ,  B01J21/08

CPC classification number: C07C5/322 ,  B01J23/02 ,  B01J37/14 ,  B01J37/18 ,  C07C5/3332 ,  C07C2521/04 ,  C07C2521/08 ,  C07C2521/12 ,  C07C2523/02 ,  C07C2523/04 ,  C07C2523/08

Abstract: The process for activating a catalytic composition for paraffin dehydrogenation containing gallium, alumina, possibly silica and/or one or more alkaline or alkaline-earth metals, comprises thermal activation in air followed by post-activation effected by the following stages:oxidation with air and/or oxygen or a mixture containing oxygen and inert gas;purging with inert gas;reduction with hydrogen or a mixture of hydrogen and an inert or reducing gas.The catalytic composition activated by said process contains gallium, alumina, silica and possibly one or more alkaline or alkaline-earth metals, the alumina being in .delta. or .theta. phase or in .delta.+.theta. or .delta.+.theta.+.alpha. phase mixture.

Abstract translation: 用于活化含有镓，氧化铝，可能的二氧化硅和/或一种或多种碱土金属或碱土金属的石蜡脱氢的催化组合物的方法包括在空气中的热活化，随后由下列阶段进行后活化：用空气和 /或氧气或含有氧气和惰性气体的混合物; 用惰性气体吹扫; 用氢气或氢气与惰性气体或还原气体的混合物还原。 通过所述方法活化的催化剂组合物包含镓，氧化铝，二氧化硅和可能的一种或多种碱土金属或碱土金属，氧化铝在δ或θ相中或在δ+θ或δ+θ+α相混合物中。

公开(公告)号：US5246690A

公开(公告)日：1993-09-21

申请号：US740860

申请日：1991-07-31

Applicant: Giuseppe Bellussi ,  Aldo Giusti ,  Antonio Esposito ,  Franco Buonomo

Inventor： Giuseppe Bellussi ,  Aldo Giusti ,  Antonio Esposito ,  Franco Buonomo

IPC: B01J29/89 ,  C01B37/00 ,  C07C1/20 ,  C07C37/60

CPC classification number: B01J29/89 ,  C01B37/005 ,  C07C1/20 ,  C07C37/60 ,  C07C2529/89 ,  Y10S423/22

Abstract: A crystalline, porous, synthetic material is disclosed, together with its related preparation process.Such a material of zeolitic character, containing silicon, titanium and aluminum oxides, corresponds, in its calcined and anhydrous state, to the following empirical formula:p HAlO.sub.2.q TiO.sub.2.SiO.sub.2wherein p has a value greater than zero and lower than or equal to 0.050, q has a value greater than zero and lower than or equal to 0.025, and the H.sup.+ of HAlO.sub.2 can be at least partly replaceable or replaced by cations.

Abstract translation: 公开了一种结晶多孔合成材料及其相关的制备方法。 这种沸石特性的材料，含硅，钛和氧化铝，其煅烧和无水状态对应于以下经验式：p HA102.q TiO2.SiO2，其中p的值大于零且小于或等于 至0.050，q具有大于零且小于或等于0.025的值，并且HA10的H +可以至少部分替代或被阳离子取代。

公开(公告)号：US5120868A

公开(公告)日：1992-06-09

申请号：US676361

申请日：1991-03-28

Applicant: Renata Patrini ,  Mario Marchionna ,  Massimo Lami ,  Francesco Ancillotti

Inventor： Renata Patrini ,  Mario Marchionna ,  Massimo Lami ,  Francesco Ancillotti

IPC: B01J31/24 ,  C07C41/06

CPC classification number: B01J31/2404 ,  B01J31/24 ,  B01J31/2409 ,  C07C41/06 ,  B01J2231/32 ,  B01J2531/824 ,  B01J31/2208 ,  B01J31/2291 ,  C07C2101/10

Abstract: A catalyst system for the selective production of isoprenylalkylethers from isoprene is described, characterized by satisfying the following empirical formulaPdLxL.sup.' ywhereL is a phosphorated binder in the form of an organic derivative of trivalent phosphorus of type R3P or R2P[CH(R)]zPR2, in which the substituents R, which can be identical or different, are either hydrogen atoms or alkyl, cycloalkyl, aryl, alkoxy, aryloxy, arylthio or arylalkyl groups, and in which z is a whole number between 1 and 5;L.sup.' is an easily displaceable binder chosen from dienes, olefins, anhydrides, diketones and nitriles;x is a whole number between 0 and 4 and y is a whole number between 0 and 3,in which system excess phosphorated compounds of R3P or R2P[CH(R)]zPR2 type may or may not be present.

公开(公告)号：US4925543A

公开(公告)日：1990-05-15

申请号：US788656

申请日：1985-10-16

Applicant: Marco Ginatta

Inventor： Marco Ginatta

IPC: C25C7/02

CPC classification number: C25C7/02

Abstract: A special system is described and illustrated for supporting and easily maneuvering, without the danger of breakage, a set of graphite anodes used for extracting the lead from the electrolyte in electrochemical processes for recovering the metals contained in spent accumulators.

Abstract translation: 描述和说明了一种特殊系统，用于支持和容易地操纵，而不会有破损的危险，用于在电化学方法中从电解质中提取铅的一组石墨阳极用于回收废蓄电池中所含的金属。

公开(公告)号：US4899825A

公开(公告)日：1990-02-13

申请号：US197978

申请日：1988-05-24

Applicant: Marco Bosoni ,  Roberto Brusoni ,  Carlo Fiorentini ,  Pietro Fracassi

Inventor： Marco Bosoni ,  Roberto Brusoni ,  Carlo Fiorentini ,  Pietro Fracassi

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

CPC classification number: B01F5/0411

Abstract: A device for continuously delivering a proportionately constant fire-fighting solution which comprises an extinguisher foam mixed with variable flow rates of fire fighting water. The device comprises a motor, which is a volumetric screw pump driven in reverse by the hydraulic pressure of the fire fighting water network. This hydraulic motor is mechanically connected to one or more volumetric pumps which proportionally meter the fire fighting foam extinguisher liquid into the network water.