5 replies to this topic

[vne]

Dear all,

I'm looking for design standard for Plate and Frame heat exchanger. Up to now, I only can find API 662 - Plate heat exchangers for general refinery services.

I would be very appreciated if you can provide me content of those standards. If it's not possible, only the standard names are fine, I can buy or look for them somewhere else.

Thank you very much.

[ankur2061]

vne,

I had made a standard for reputed offshore O&G company of the middle east titled "Process Design Criteria" wherein I had one small section devoted to P&F HE's. This section only gives some process guidelines for PFHE selection. I am reproducing the same verbatim for the benefit of all:

Plate and Frame Heat Exchanger (PFHE)

Regular plate & frame heat exchangers with gasket are used for liquid-to-liquid duties under higher fouling conditions at moderate temperatures and pressures. Fluids that are chemically aggressive towards standard gasket material must be handled by either semi-welded or fully welded plate heat exchangers.

Reference is made to BP GS 126-5 & API standard 662 part 1 / ISO 15547-1 for design of PFHE’s.

PFHE’s are not recommended for design pressures above 30 bar abs (435 psia) and design temperatures above 260°C (500°F). Reference is made to BP GS 126-5.

The nominal thickness of gasketed plates before being pressed shall be sufficient to meet design conditions but shall not be less than 0.5 mm (0.02 inch). Reference is made to API standard 662, part 1.

In general PFHE’s should only be limited to service involving single phase liquids and single phase gases. PFHE’s shall not be used for vaporizing duties. A careful evaluation shall be done before deciding to use PFHE’s in condensing duties (with the exception of condensing steam).

PFHE’s shall incorporate a protective metal shroud to cover sides and top of the exchanger plate pack. The shroud shall have a minimum clearance of 50 mm (2 inch) from the plate pack. Reference is made to BP GS 126-5.

A drip tray with drain connections shall be provided as an integral part of the PFHE frame. The drip tray shall extend for the full length of frame and be 25 mm (1 inch) wider all round than the shroud. Refernce is made to BP GS 126-5.

Hope this provides some help.

Regards,
Ankur.

[vne]

Thanks Ankur for the answer. I've searched around and found BP GS 126-5 (Anyone needs this code, PM me). But it's the code for Plate heat exchanger used for offshore service. Anyone knows other codes/ standards of plate and frame heat exchanger used for downstream services(rather than API 662) please help me.

Thx so much.

[ankur2061]

vne,

PFHE's are PFHE's whether for onshore, offshore, refinery or petrochemicals. I don't see what difference does it make. The basic design concept remains the same irrespective of the service.

The guidelines that I have provided in my post are general & are not specific to any service.

Regards,
Ankur.

[breizh]

Hi ,
For those interested in designing or simulating the performance of plates heat exchanger, this link could be a great support :

http://sourceforge.n...ojects/innohex/

Hope this helps .

Breizh

[processengineerx]

thanks for sharing such a useful thing..breizh...