Abstract: A process for recovering processing liquids from a feed stream which contains processing fluid, water, and at least one alkaline earth metal cation. The process includes reacting at least one alkaline earth metal cation with a suitable anion to form a substantially water-insoluble salt precipitate, the precipitate being formed in one of a fractionation column having a forced recycle loop or a flash vessel having a forced heated recycle loop.

Abstract: A process for recovering processing liquids from a feed stream which contains processing fluid, water, and at least one alkaline earth metal cation. The process includes reacting at least one alkaline earth metal cation with a suitable anion to form a substantially water-insoluble salt precipitate, the precipitate being formed in one of a fractionation column having a forced recycle loop or a flash vessel having a forced heated recycle loop.

Abstract: A process for recovering a processing liquid used in gas purification systems, e.g., to remove greenhouse gases, and containing water, the processing liquid, components having higher and lower boiling points than water and a component less volatile than the processing liquid, wherein the feed mixture is heated and introduced into a first separation zone, a portion of the water and the processing liquid being volatilized to produce a hot vapor stream comprising volatilized water and processing liquid. There is also produced a first residuum stream which contains some of the less volatile components and the unvolatilized portion of the water in the processing liquid. The hot vapor stream is introduced into the separation system forming part of a gas purification system. The majority of the energy in the hot vapor stream is recovered for use in the separation system forming part of the gas purification system.

Abstract: A process for recovering a processing liquid used in gas purification systems, e.g., to remove greenhouse gases, and containing water, the processing liquid, components having higher and lower boiling points than water and a component less volatile than the processing liquid, wherein the feed mixture is heated and introduced into a first separation zone, a portion of the water and the processing liquid being volatilized to produce a hot vapor stream comprising volatilized water and processing liquid. There is also produced a first residuum stream which contains some of the less volatile components and the unvolatilized portion of the water in the processing liquid. The hot vapor stream is introduced into the separation system forming part of a gas purification system. The majority of the energy in the hot vapor stream is recovered for use in the separation system forming part of the gas purification system.

Abstract: An exemplary heat exchanger includes a heat exchanger core having a core side fluid space and a cover plate and a substantially U-shaped wall fitted at one end with an inlet header and, at an opposing end, with an outlet header, which in combination with the cover plate, define a shell side fluid space. In this example, the cover plate forms two seals with two opposing sides of the U-shaped wall, forms a seal with the inlet header and forms a seal with the outlet header Such a heat exchange may be suitable for use as an EGR cooler. Other exemplary devices, methods and systems are disclosed.

Abstract: A heat exchanger including a shell having an inner chamber defined by an inside wall surface, and a tube stack disposed within the inner chamber. The shell is formed of a single piece of material. The tube stack includes a plurality of flat elongated tubes arranged in a stack. Each of the tubes is formed of a single piece of material that is joined along a seam. A first fluid flow path is defined within the tubes. The tubes each include a plurality of projections projecting outwardly therefrom. The projections on adjacent tubes contact one another, thereby forming a second fluid flow path.

Abstract: An exemplary heat exchanger includes increased stiffness to prevent buckling of a core. In some examples, an exemplary heat exchanger includes a core and a shaft at least partially positioned therein to increase stiffness of the core and located to limit movement of a heat exchange portion and to receive loads therefrom. In another example, an exemplary heat exchanger includes a core, a duct in fluid communication therewith, a load bearing member positioned adjacent to the core, and a mount which attaches the duct to the member. By connecting the duct to the member, the duct can transfer loads to the load bearing member. This protects the core being damaged by loads applied to the duct. The mount restrains the duct so to transfer loads, from the duct to the load bearing member. Such loads can be from external sources, such as inertia loads and vibration loads.

Abstract: A high temperature prime surface heat exchanger is created using adjacent pairs of plates having braze cladding on a first surface thereof that are formed to create fluid flow passages for coolant and fluid flow passages for hot gas when assembled into a core by stacking the plates. The coolant passages are adjacent the first or clad surface of each formed plate to avoid direct contact with the high temperature gas flowing in the hot gas passages. The adjacent plate pairs are joined by brazing of a contacting portion of the first surface on each plate to form sealed coolant passages the core.

Abstract: Exemplary methods, devices and/or system for facilitating transfer of heat energy between a gas and a cooler liquid. An exemplary heat exchanger is suitable for use as an EGR cooler.

Abstract: A high temperature prime surface heat exchanger is created using adjacent pairs of plates having braze cladding on a first surface thereof that are formed to create fluid flow passages for coolant and fluid flow passages for hot gas when assembled into a core by stacking the plates. The coolant passages are adjacent the first or clad surface of each formed plate to avoid direct contact with the high temperature gas flowing in the hot gas passages. The adjacent plate pairs are joined by brazing of a contacting portion of the first surface on each plate to form sealed coolant passages the core.

Abstract: In at least one embodiment, the invention is a heat exchanger with increased stiffness to prevent buckling of the core and which carries externally produced loads without damage to the core. In some embodiments, the present invention is a heat exchanger having a core with a heat exchange portion, and a shaft with at least part of it positioned in the core to increase the stiffness of the core. The shaft is positioned at least adjacent to the heat exchange portion of the core. The shaft is also located to limit movement of the heat exchange portion and to receive loads from the heat exchange portion. The shaft can be positioned through some or the entire heat exchange portion of the core. In another embodiment, the heat exchanger includes a core, a duct in fluid communication with the core, a load bearing member positioned adjacent to the core, and a mount which attaches the duct to the load bearing member.

Abstract: The present invention is embodied in a heat exchanger, which allows differential thermal expansion of its elements while providing a bypass seal. In at least one embodiment, the heat exchanger includes, a shell for containing a first gas, a core positioned within the shell, and a seal positioned between the core and the shell. The seal allows at least some differential expansion between the shell and the core while restricting the flow of the first gas past the seal. This allows a space for expansion of the core to exist between the core and the shell, while preventing the first gas from bypassing the core by traveling through the expansion space. As such, the seal forces the first gas to pass through the core, greatly increasing heat transfer from the first gas to the core. Preferably, the seal is mounted to the core at a position at least adjacent to the free (moveable) end or ends of the core. The seal can be folded into several layers such that the folds abut both the core and the shell.