L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Gilles Bracque

Alain Guillard

Jean-Pierre Gourbier

Francois Dehaine

Alain Grelaud

Michel Mouliney

Patrick Le Bot

Norbert Rieth

Jean-Marc Tsevery

Daniel Gourdain

Benoit Rousseau

Jean-Louis Perisse

In this method of constructing a composite structure with an internal structure surrounded by an external structure, plural composite modules are constructed by joining, for each of the modules, a section (,) of the internal structure to a corresponding section (,) of the external structure. The modules are joined together on site in order to form the composite structure.

Method of constructing a large elongate fluid-confining internal structure surrounded by an external structure

The plant (1) comprises at least three assemblies (10, 11, 12) arranged one beside the other, namely a first assembly (10) comprising a medium-pressure column (2), a second assembly (11) comprising a low-pressure column (3), and a third assembly (12) comprising a heat-exchange line (5). The plant further comprises a liquid pump (6) for making a liquid flow between one of the columns (3) and the vaporizer-condenser (4). Application to the distilling of air using columns with structured interior packing.

Air-distillation plant and corresponding cold box

Air distillation installation comprising: (A) an air compressor group (1) whose output is connected to an outlet coupling (11); (B) two cylinders (2A, 2B) for the purification of air by adsorption having inlet/outlet couplings (12A, 12B); (C) a first framework (13) in which are mounted: (a) the accessories downstream of the compressor such as an assembly (14, 17) for precooling air; (b) accessories of the purification cylinders, such as an assembly of valves and a regeneration gas reheater (18); and (c) the connection conduits of the mentioned accessories, with their safety members and their automatic and/or remotely controlled valves, these conduits terminating in couplings (15, 22A, 22B, 23) for connection to other portions (1, 2A, 2B, 4) of the installation, and the corresponding monitoring, control and instrumentation members (21); (D) a second framework (31) in which are mounted: (d) the principal heat exchangers (24) and the subcoolers (25); (e) the assembly of the cold accessories such as the cryogenic valves and the cryogenic pumps (26) and the expansion turbines (27); and (f) the conduits for connecting the elements mounted in the second framework, with their safety members and their automatic and/or remotely controlled valves, these conduits terminating in couplings (29, 30) for connection to other portions (3, 5) of the installation; (E) an air distillation column (5) provided with a certain number of couplings (33) for the inlet and outlet of fluids; and (F) tubes (6) for connection between the associated couplings (11-15, 12A-22A, 12B-22B, 23-29, 30-33) of the portions (A) to (E) of the installation.

Installation for the distillation of air

A cryogenic unit for the separation of gases includes at least one distillation column (1) is preassembled in the factory. The column (1) with added tubing elements (2) constitutes a pre-equipped subassembly which is transported and installed at the worksite. The tubing elements are disposed so as to be inscribed in at least one elongated volume (3; 3.sub.1, 3.sub.2) lateral to the column and of reduced section. The subassembly (1,2) is disposed on at least one transport cradle (4, 4') and transported to the worksite on the cradle and mounted at the worksite in a cold box (10) Preferably, all the tubing elements are disposed in the cradle. The subassembly, with or without the cradle, is mounted adjacent one side wall of the cold box (10) and is spaced by insulation (13) from at least one liquid gas reservoir (11; 12) also in the cold box (10).

Process for the construction of a cryogenic unit for the separation of

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Saint Leu d'Esserent, France

Gilles Bracque