公开(公告)号：DE2814708C2

公开(公告)日：1982-08-26

申请号：DE2814708

申请日：1978-04-05

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

Inventor： ROMANO, UGO, MILANO, IT ,  RIVETTI, FRANCO, GIUSEPPE SELLA, IT

IPC: B01J23/44 ,  B01J31/00 ,  C07B61/00 ,  C07C69/36 ,  C07C67/36

Abstract: A method for the preparation of organic esters of oxalic acid by reaction of carbon monoxide under pressure with the corresponding alcohol is disclosed, the improvement consisting in the use of a quite particular catalyst system. The catalyst is a binary system in which the principal member is a palladium complex and the co-catalyst is a compound, preferably an organic compound having an acidic nature, no matter how weak.

公开(公告)号：DE2811057C2

公开(公告)日：1982-07-29

申请号：DE2811057

申请日：1978-03-14

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

Inventor： RENZ, PIERLUIGI ,  BARONCELLI, VITTORIO, ROMA, IT

IPC: G01N33/53 ,  A61B10/00 ,  A61K39/44 ,  C12Q1/26 ,  G01N33/543 ,  G01N33/74 ,  G01N33/78

公开(公告)号：DE2740358C2

公开(公告)日：1982-07-01

申请号：DE2740358

申请日：1977-09-07

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

Inventor： ZARDI, UMBERTO, SAN DONATO MILANESE, MILANO, IT ,  LAGANA, VINCENZO, MILANO, IT

IPC: C02F1/02 ,  C02F9/00 ,  C02F11/08 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C126/02

Abstract: In a urea producing method by synthesis, the improvement which consists in feeding liquid ammonia in excess to the reactor so that a urea solution which contains ammonium carbamate is produced, the carbamate is decomposed in a high-pressure decomposer and the stripping agent is an inert, oxygen-containing gaseous stream, the carbamate decomposition products are sent to a high pressure condenser and ammonium carbamate is formed, whereafter the carbamate is separated from the inerts and the solution of urea coming from the high-pressure decomposer is fed to a medium-pressure decomposer which is fed through its bottom with inerts. The heat for operating the medium-pressure decomposer is a hot condensate from the high-pressure-decomposer-heating steam, and the products of decomposition of the carbamate coming from the medium-pressure decomposer are sent to a medium-pressure condenser together with a solution of ammonium carbonate coming from the low-pressure sections of the installation. Virtually pure, nonpolluting waters can be discharged from the installation.

公开(公告)号：DE2950205C2

公开(公告)日：1982-06-24

申请号：DE2950205

申请日：1979-12-13

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

Inventor： LAGANA', VINCENZO ,  PASERO, RICCARDO, MILANO, IT

IPC: B01D1/22 ,  B01D1/06 ,  B01J4/00 ,  F28D3/02 ,  F28D3/04 ,  F28F9/22 ,  B01D53/18 ,  B01D3/32

Abstract: This invention relates to an apparatus for distributing liquid in the form of film within vertical tubes. The apparatus is constituted by a solid cylindrical member inserted as a plug into each tube at the upper end thereof. Said member is provided with an upper ledge, a lower cavity forming a circular rim at its base, and helical outer grooves extending also in the ledge and having a depth less than the thickness of said rim.

公开(公告)号：DE3032175C2

公开(公告)日：1982-04-15

申请号：DE3032175

申请日：1980-08-26

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

Inventor： LAGANA, VINCENZO ,  SAVIANO, FRANCESCO, MILANO, IT ,  CAVALLANTI, VIRGINIO, CREMONA, IT

IPC: C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/10 ,  C07C126/02 ,  C07C126/067

公开(公告)号：DE2942044C2

公开(公告)日：1982-01-21

申请号：DE2942044

申请日：1979-10-17

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

Inventor： BERTI, ALFREDO, PESARO, IT ,  ROGNONI, ANTONIO, PAVIA, IT

IPC: F16L1/12 ,  F16L1/20 ,  F16L1/04

Abstract: This invention relates to an adjustable apparatus for supporting a pipe, laid on a deep sea bed, at a depression in the sea bed. The apparatus according to the invention comprises an upper floating caisson provided with support legs and a lower support structure comprising guide tubes for said legs. The guide tubes are rigidly connected by cross members, which can be rotated from a rest position to a work position, in which they support the pipe.

公开(公告)号：DE2010500C3

公开(公告)日：1982-01-14

申请号：DE2010500

申请日：1970-03-05

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

Inventor： CIUTI, BRUNELLO, SAN DONATO MILANESE, IT ,  DEL ROSS, SERGIO, LA SPEZIA, IT

IPC: C02F1/68 ,  E02B15/08 ,  B01J20/02 ,  C09K3/32

Abstract: Composition useful in eliminating surface water pollution caused by crude petroleum oil or its fractions consisting of:

公开(公告)号：DE2759683C3

公开(公告)日：1981-10-15

申请号：DE2759683

申请日：1977-04-26

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

Inventor： FIORINI, MARIO ,  GIONGO, MATTEO ,  MARCATI, FRANCESCO, ROM, IT ,  MARCONI, WALTER, SAN DONATO MILANES, MILANO, IT

IPC: C07B31/00 ,  B01J31/00 ,  B01J31/24 ,  C07B35/02 ,  C07B53/00 ,  C07B61/00 ,  C07C29/00 ,  C07C31/13 ,  C07C51/36 ,  C07C55/02 ,  C07C67/00 ,  C07C67/30 ,  C07C69/68 ,  C07D317/60 ,  C07F9/24 ,  C07F9/28 ,  C07F9/46 ,  C07F9/48 ,  C07F9/50 ,  C07F9/6509 ,  C07F9/6584 ,  C07F15/00

公开(公告)号：DE2143583C3

公开(公告)日：1981-10-15

申请号：DE2143583

申请日：1971-08-31

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

Inventor： GUADALUPI, MARIO, DR. ,  PAGANI, GIORGIO, DR., MILANO, IT ,  ZARDI, UMBERTO, DR., DAN DONATO MILANESE, IT ,  PARIS, IVO, DR., MELEGNANO, IT

IPC: C07C273/04 ,  C07C126/02

公开(公告)号：ES254182U

公开(公告)日：1981-09-01

申请号：ES254182

申请日：1979-12-14

Applicant: SNAMPROGETTI S.P.A.

IPC: B01D1/22 ,  B01D1/06 ,  B01J4/00 ,  F28D3/02 ,  F28D3/04 ,  F28F9/22

Abstract: Dispositivo para la distribución de líquido en forma de película en el interior de tubos verticales, caracterizado porque está constituido por un cuerpo cilíndrico macizo introducido a modo de tapón sobre cada tubo de un haz de tubos en correspondencia con una placa portatubos superior del haz de tubos, estando provisto dicho cuerpo cilíndrico de una brida en su extremidad superior, de una cavidad en su extremidad inferior formando una corona circular en su base, y de acanaladuras helicoidales en su superficie externa, las cuales atraviesan también la brida y son de profundidad inferior al grosor de la corona.