Pulsation dampener

Technical specifications:

In a process of nitrogen and oxygen production, by multi-stage compression, our customer Burckhardt Compression asks us for pulsation dampers. Indeed, such an installation including different stages of compression, generates shock waves that affect the performance and efficiency as well as the mechanical strength of the entire installation, including the instrumentation and piping. At each pressure level, it is necessary to provide a device to dampen and reduce the amplitude of the waves propagating at the discharge of the compression stage. This equipment must be calculated taking into account permanent pulsations in a range of plus or minus 5% of the working pressures. Made of materials compatible with the fluids and the temperature and pressure conditions, in carbon steel, the devices must necessarily be built according to the CODAP and comply with the European Pressure Equipment Directive.

Some technical datas :

 

Name of item	Pulsation Damper 1st stage suction	Pulsation Damper 3rd stage discharge	Pulsation Damper 1st stage suction	Pulsation Damper 2nd stage discharge
Item identification number	DAMP 701	DAMP 706	DAMP 601	DAMP 604
Medium	NITROGEN DRY	NITROGEN DRY	OXYGEN DRY	OXYGEN DRY
operating pressure	5 bar	38 bar	8 bar	35 bar
Design pressure	6 bar	43 bar	9 bar	38 bar
Hydrotest pressure	9 bar	64,5 bar	13,5 bar	57 bar
Design temperature	100 / (-28,9)	200 / (-28,9)	100 / (-28,9)	180 / (-28,9)
Welding efficiency	0,85	0,85	0,85	0,85
Corrosion allowance	1,6	1,6	1,6	1,6
volume	750 l	160 l	200 l	160 l
code	CODAP	CODAP	CODAP	CODAP
Material grade
Shell	P 265 GH  EN 10 028-2	A333 GR 6	A333 GR 6	A333 GR 6
Nozzles	A333 GR 6	A333 GR 6	A333 GR 6	A333 GR 6
Nozzle flanges	BF 42 F	BF 42 F	BF 42 F	BF 42 F
supports	P 265 GH   EN 10 028-2	P 265 GH  EN 10 028-2	P 265 GH  EN 10 028-2	P 265 GH  EN 10 028-2
Shell dishes	P 265 GH  EN 10 028-2	A 420 WPL6	A 420 WPL6	A 420 WPL6
Gaskets	AFM 34	AFM 34	SIGRAFLEX Typ V20010C2	SIGRAFLEX Typ V20010C2
Reinforcement pads	P 265 GH  EN 10 028-2	P 265 GH  EN 10 028-2	P 265 GH  EN 10 028-2	P 265 GH  EN 10 028-2

Geometric Specificities :

Vertical (suction) and horizontal (discharge) shock absorbers, with hand hole type inspection holes.

Constructive Specificities :

Code : CODAP Regulation: DESP 97/23/EC Design temperature: 80°C / +150 °C Welding coefficient 0.85 Welding processes: EN 288.3 approved Welders' approvals: According to EN 287.1 Semi-automatic MIG/MAG processes

Quality Specificities :

LOFC according to customer and local specifications. operating file in English and French language