摘要:
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.
摘要:
Heat exchange assembly comprising at least one first and one second heat exchange body (5, 7), each body being of the plate heat exchanger type, comprising a plurality of metal plates of substantially similar contour extending along a first dimension or length and a second dimension or width, spaced from and arranged in parallel rows to one another along a third dimension or thickness and sealing means bounding flattened passages with the said plates, forming at least one passage of a first type and at least one passage of a second type, the sealing means allocated to each passage releasing one fluid inlet and one fluid outlet, characterized in that one side bounded by a width and a thickness of at least one first heat exchange body is located at least partially opposite a side bounded by a width and a thickness of at least one second heat exchange body, the two sides being separated by insulating material (I).
摘要:
A process and an apparatus for separating air by cryogenic distillation. The apparatus has a medium pressure column thermally coupled to a low pressure column. Compressed and purified air is cooled to cryogenic temperature in an exchanger, and sent at least partly to the medium pressure column. Streams enriched in oxygen and nitrogen are sent from the medium pressure column to the low pressure column and, streams enriched in nitrogen and oxygen are removed from the low pressure.
摘要:
To reduce the level of oxygen concentration in the waste gases emitted by the stack of such installations, according to the invention, connecting means (15) connect the respective internal spaces of a chamber (13), for discharging an inert gas miscible with oxygen and of lower density than air, such as nitrogen, and of the stack (2); thus, this inert gas is mixed with at least the oxygen flowing through the stack and the mixture obtained is discharged with a velocity at least equal to approximately 7 m/s at the exit of the stack.
摘要:
To reduce the level of oxygen concentration in the waste gases emitted by the stack of such installations, according to the invention, connecting means (15) connect the respective internal spaces of a chamber (13), for discharging an inert gas miscible with oxygen and of lower density than air, such as nitrogen, and of the stat (2); thus, this inert gas is mixed with at least the oxygen flowing through the stack and the mixture obtained is discharged with a velocity at least equal to approximately 7 m/s at the exit of the stack.
摘要:
A process and an apparatus for separating air by cryogenic distillation. The apparatus has a medium pressure column thermally coupled to a low pressure column. Compressed and purified air is cooled to cryogenic temperature in an exchanger, and sent at least partly to the medium pressure column. Streams enriched in oxygen and nitrogen are sent from the medium pressure column to the low pressure column and, streams enriched in nitrogen and oxygen are removed from the low pressure.