The invention relates to a device for multi-stage heat exchange and to a method for producing one such device, whereby at least three free-flowing media (fluids) are used in three flow devices subdivided into at least two heat-exchanging or flow modules. Said modules respectively consist of at least two flow elements that are arranged in such a way that different fluids alternately flow through the same. For essentially liquid fluids, the fluids are distributed to the flow elements by means of fluid collecting devices or fluid distributing devices connected in a gas-tight and liquid-tight manner. The main flow directions of all fluids in the flow elements are in essentially parallel planes. At least two flow modules are directly mounted in series and/or by means of fluid distributing devices in a flow-connected manner at least in relation to one flow device.

Device for multi-stage heat exchange and method for producing one such device

An evaporative heat exchanger (10) is provided for the transfer of heat to a first fluid (30) from a second fluid (28) and a third fluid (22) to vaporize the first fluid (30). The heat exchanger (10) includes a core (40), a first flow path (60) in the core for the first fluid (30), a second flow path (66) in the core (40) for the second fluid (28), and a third flow path (68) in the core (40) for the third fluid (22). The core (40) includes a first section (42), a second section (44), and a third section (46), with the second section (44) connecting the first and third sections (42, 46). The first flow path(60) extends through all of the sections (42, 44, 46), the second flow path (66) extends through the first section (42); and the third flow path (68) extends through the third section (46).

Three-fluid evaporative heat exchanger

A system for liquefying industrial gas wherein industrial gas is compressed to two levels using a first and a second compression system and then is processed in a heat exchanger having horizontally oriented sensible heat exchange passages and vertically oriented condensing heat exchange passages.

Cryogenic industrial gas liquefaction system

The utility model provides a plate heat exchanger. The plate heat exchanger comprises first heat exchange plates and second heat exchange plates which are arranged adjacently, wherein a first fluid circulation passage is formed by the space between each first heat exchange plate and the corresponding second heat exchange plate; each first heat exchange plate and the corresponding second heat exchange plate form a heat exchange plate set; a plurality of heat exchange plate sets are arranged; a second fluid circulation passage is formed by the space between every two heat exchange plate sets; the flow direction of first fluid in at least one first fluid circulation passage in the first fluid circulation passages is the same as the flow direction of second fluid in at least one second fluid circulation passage in the second fluid circulation passages; the flow direction of the first fluid in at least one first fluid circulation passage in the first fluid circulation passages is the reverse to the flow direction of the second fluid in at least one second fluid circulation passage in the second fluid circulation passages. According to the technical scheme, the problem that higher energy is required to be consumed in the prior art is effectively solved.

Plate heat exchanger

An exchanger comprises a plurality of plates (8) made of copper, nickel or aluminium or an alloy of these metals, which are separated by exchange corrugations made of copper or a copper alloy (6) and two outer sheets (7). The distance between the plates is more than 6 mm, optionally 8 mm.

Heat exchanger, in particular plate heat exchanger for an air separation unit

A heat exchanger having a first counterflow heat exchange unit with first and second segments wherein a flow of at least one product from a cryogenic air separation unit is channeled in a first direction along both the first and second segments and a second counterflow heat exchange unit is juxtaposed to the second segment of the first counterflow heat exchange unit and receives a flow of feed air which is channeled in a second direction that is counter to the first direction and allows heat exchange between the product and the air A crossflow subcooling unit is juxtaposed to the first segment and receives at least one process cryogenic liquid from the air separation system for subcooling

Bayram Arman

Papers

Heat exchange unit for a cryogenic air separation system