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Side Penetrating Main Heat Exchanger Box Manifolds

IP.com Disclosure Number: IPCOM000240159D
Publication Date: 2015-Jan-07
Document File: 2 page(s) / 70K

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The IP.com Prior Art Database

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Side Penetrating Main Heat Exchanger Box Manifolds

    Main heat exchangers are used in Large Air Separation Units (LASU) to cool the incoming air against the returning product and waste streams. Historically the warm end main heat exchanger piping in cold boxes have been routed to form header manifolds inside the cold box before they exit the shell of the cold box. There has been a shift in design philosophy on LASU opportunities for cold box engineering and design to look at routing warm end heat exchanger lines external to the cold box. While this is not a completely new concept in the industry, there is a strategic benefit of having more lines penetrate the cold box from the sides rather than the roof. Figure 1 shows an example layout using side penetrating headers.

    One advantage of side penetrating external manifolds is that they allow much of the warm header piping to be carbon steel rather than aluminum. Another major benefit is that the cold box structure can be reduced in height considerably through this approach. On a typical LASU main heat exchanger cold box, several meters of height reduction can be achieved by using side penetrating manifolds or a combination of roof and side penetrating piping. Not only does the amount of structural material decrease, but the cold box is also now able to be shipped more easily and at times to even more remote plant locations. Both of these advantages provide significant reduction to

Figure 1 Iso View of Cold box with E...