Danfoss MPE 70, Руководство по эксплуатации

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Data sheet | MPE 70 Energy recovery device
34
180R9426 | AQ367027814446en-000801 | IOM MPE 70 | 08.2022
Explanation of P&ID setup
A. Inlet filter:
Place inlet filters (32) on LP string in front of
the MPE 70 (11). Please see Guide line
(AI317041322125en-000101) on Filtration.
Thoroughly clean pipes and flush system
prior to start-up.
B. Inlet pressure:
The max. and min. inlet pressure must be
controlled according to specifications in
datasheet for MPE 70.
C. Piping:
Dimension the piping to obtain minimum
pressure loss (large flow, minimum pipe
length, minimum number of bends/
connections and fittings to prevent pressure
loss and flow turbulence). .
D. Inlet flow control and mixing:
To balance LP flow up against HP flow on the
MPE 70 and control mixing, place
flowmeters on low-pressure inlet (12) of the
MPE 70 and on highpressure output (29).
E. HP flow control:
To adjust the recovery rate and the HP
flow of the MPE 70. Regulate the speed
of the booster pump (30). Adjust the speed of
the MPE 70 if needed.
F. Low pressure flow control:
In order to control the low pressure flow, a
flow control valve (15) must be installed in
the common low pressure outlet pipe from
the MPE 70s. The valve should be designed to
control flow.
It is recommended to use a manual valve with
lock function or an automatic controlled
valve.
G. Variable speed and overload protection:
Install a VFD to control the speed of the
MPE 70. The speed is defined by HP flow
given by the flowmeter (29.)
H. Membrane cleaning
Valves pos. 9, 27 and 28 are used for by-
passing the MPE 70 when CIP cleaning.
I. Air venting:
Install an air bleed valve (8) at the highest
point of the high-pressure piping to ensure
the air is purged from the system before
startup.
7.7 RO systems with an MPE 70
M
HP in
HP out
M
Permeate
F
F F
MPE 70
M
HP in
HP out
VFD
6
19
17
8
9
27
15
10 11
11
12
Drain
4
18
2
M
4
18
LP in
*
*
Second stage filter: If recommended housing design and cartridges are not used, a second stage filter is
required
1
21
2
PS
PI
PS
PI
14
PI
PI PI
PI
3
22
22
PS
24
23
25
25
26
26
CIP
28
F
29
M
30
31
MPE 70
VFD
VFD
VFD VFD
23
LP out
1. Flowmeter
2. Pressure indicator
3. Pressure Switch
4. Motor HP pump
5. Pressure indicator
6. Safety valve
7. Plug valve
8. Venting valve
9. Plug valve
10. Pressure indicator
11. MPE 70
12. Flowmeter
13. Fresh water permeate flush
14. Pressure indicator
15. Controll valve
16. Membrane
17. Flowmeter
18. Check valve
19. Full flow cleaning/CIP
20. Frequency converter
21. Pressure indicator
22. Frequency converter
23. Frequency converter
24. Pressure Indicator
25. HP Hose
26. LP Hose
27. Plug valve
28. Plug valve
29. Flowmeter
30. Booster pump
31. Media filter
32. 5 µm Nominal Melt blown filter
33 Filter 10 micron ABS
13
21
7
5
20
16
32
31
33