Abstract: A heat exchanger with brazed plates including a stack of parallel plates defining a plurality of generally flat fluid circulating passages, closure bars which delimit the passages and distributing means for distributing a fluid to each passage of a first series of passages and means for conveying another fluid to a second series of passages where at least one passage contains organized exchanging structures which form a plurality of channels in the width of the passage and also at least three channels in the height of the passage is provided. The invention is useful for air separation by cryogenic distillation.

Abstract: The present invention relates to the vaporization of a liquid by exchanging heat with a second fluid by means of a heat exchanger of the vertical plate type. It applies in particular to air distillation installations.

Abstract: A method of manufacturing a plate heat exchanger of the type comprising a plurality of plates defining paths for fluids to flow through, the plates being assembled to each other by brazing, and a heat exchanger produced by such a method is presented.

Abstract: A method for producing a plate heat exchanger, and a plate heat exchanger produced on the basis of such a method of production is provided.

Abstract: The invention concerns a fin defining a general corrugated direction (D1), comprising a plurality of corrugations (123) alternately linked by a corrugation top (121) and a corrugation base (122). The fins are formed exclusively from sintered metal particles. The invention is applicable to plate heat exchangers of a unit for air separation of H2/CO mixtures by cryogenic distillation.

Abstract: The invention concerns a fin defining a general corrugated direction (D1), comprising a plurality of corrugations (123) alternately linked by a corrugation top (121) and a corrugation base (122). The fins are formed exclusively from sintered metal particles. The invention is applicable to plate heat exchangers of a unit for air separation or H2/CO mixtures by cryogenic distillation.

Abstract: The invention concerns a heat exchanger with brazed plates comprising a stack of parallel plates defining a plurality of generally flat fluid circulating passages, closure bars which delimit said passages and distributing means for distributing a fluid to each passage of a first series of passages and means for conveying another fluid to a second series of passages wherein at least one passage contains organized exchanging structures (15) which form a plurality of channels (19) in the width of the passage and also at least three channels (19) in the height of the passage. The invention is useful for air separation by cryogenic distillation.

Abstract: A macroporous adsorbent comprising pores having a pore volume (Vm) and a mean pore diameter (dm) such that: Vm≧1 cc.g−1 and dm≧1 &mgr;m, Vm and dm being determined by mercury porosimetry; their manufacturing process using a spheronization and freeze-drying technique; and their use for separating or purifying gases, such as air, synthesis gases or hydrocarbons, especially olefins.