Engineering tips for sampling systems [Piramoon & Buhler Technologies], by Pouriya Niknam
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Transcript of Engineering tips for sampling systems [Piramoon & Buhler Technologies], by Pouriya Niknam
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Engineering tips in sampling systemswith
&
Pouriya Niknam , Dec 2016 Piramoonco.com
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Table of content
• NOx converter• gas pump• Gas coolers• Filters
Performance Safety
Lifetime cost
installation maintenance
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NOx converter
NOx converter
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type Temp eff Max NO2 Content
Carbon Based
200C 95% 150ppm
Same PriceMetal Based
400C 97% 300ppm
•Maintenance calculator NOxCal for service life monitoring
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NOX Converter
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NOx converter types
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No ATEX NOx converter, Purge the Cabinet to keep it ex-free400C-->450C: trick for temporarily reactivate the NOx, 3week…
NO2--- NO+O2Less Side effects:
◦ No O2 added to sample◦ No SO2 reduction◦ No CO Production◦ No Pressure Drop (140mbar)
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Sample pumps
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Basics: Pump head
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300
-150- 90
60NL/H
Long distance from tapping point -- decrease flow rate
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Pump bellows
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-0.1 BAR
0 BAR
+0.2 BAR
+0.1 BAR
defective bellow
SUCTION FROM AMBIENT
For bellow Test
Decrease inlet flow
Increase outlet flow
Decrease va
cuum level
(increase absolute
underpressure manometer)
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Pump
Compressor Cooler
Analyzer
Dual Stage Comp. Cooler
pump
Analyzer
Pump/Dual Stage Comp.
Cooler Analyzer
Low efficiency
Air suctio
nWrong data (O
2
measurement)
Dual stage:
over design…
High efficiency
Condense resistance
Auto drain possible
More possible flow
Some discussion about Components Order…
Condensate
suctio
n
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?
PUMP INTERNAL BYPASS IN CASE OF BLOCKAGE AND CALIBRATION STATE
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Not for m
ining
Zone 1 (outside pum
p)
Equipm
ent protection(Gas )
atmosphere
Zone 1 (inside pum
p)
Constructively Safe
Just for surrounding
Temperature R
ange (also cover T1/T
2)
Special
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Pump Tips & Notes:These items will reduce lifetime: Operation with non atmospheric pressure Operation under high temperature condition
item sample pressure
Buhler Nox Converter <1.5 bar absolute
GMS800 –200 hPa ... 1,000 hPa
Siemens ultramat23 (BA5000) 0.5 to 1.5 bar absolute
Siemens OXYMAT 64 (High P) 2 000 hPa (abs.)(Low P) 30 hPa more than atmospheric
BA3 100 to 200 mbar (gauge)
BA 3500 Pressure 10 - 200 mbar
BA 6000-O2 0.5 to 1.5 bar absolute
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Pump Tips & Notes: No ATEX version for 800L/hr pump New product with ATEX cert. as 700L/hr, but
◦ No option for head material◦ T3 only
Temperature will be limit by the bottleneck ATEX will be expired after 5 years (from production date and not
operation)◦ They can be used in non hazardous area for another 10 years
period.◦ Or sending to Buhler for complete service.
Membrane like KNF are using Glue (Acid, Solvent,…) Buhler specific Sample pump without any glue
◦ (Honeywell Changed from KNF to Buhler )
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Pump Tips & Notes:The sample gas pump is suitable for gases only, not for liquids.The sample gas pump should be operated without pressure. A system pressure above 0.3bar is not allowed. The gas outlet must not be closed. The flow rate must be at least 50 l/h (150 l/h with system pressure
0.3 bar). If the flow rate continuously is throttled below 150 l/h during
operation, the flow rate must be controlled with a bypass valve.Extreme throttling reduces the life time of the bellow.If the pump is equipped with a bypass valve, the flow rate can be
adjustedrated current of the circuit breaker switch 230 V = 0.48 A, 115 V = 0.84 A, 24 V DC = 0.8 A
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Peltier gas coolers (PKE) compact /one gas path Per Heat exchanger/cheaper than compressor coolers
standard application: volume flow of 150 l/h at 1 bar@ 70°C , inlet dew point of 40°C.
Compressor coolers (EGK)working principle as refrigerator/ more cooling power than peltier coolers.
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Cooler selection
• energy to cool the gas about doubles with a rise of dew point of 10°C• double pressure = double energy to cool • the factory setting of the gas outlet temperature and dew point
of approximately 5°C
Exchanger material•Steel >the best choice•aggressive components > glass then•Only in certain applications PVDF
We suggest to limit the load on the heat exchanger to a range of 60..80%.
•For M&C glass type is cheaper than SS.•For Buhler SS is cheaper with better performance for non-corrosive cased
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Cooler tipsBuhler double stream exchangers EGK 1/2, PKE 42 or EGK 2 Ex saves money and time for mounting
Cross-sensitivity is very low:Vari0ating one path in the whole energy range of the exchanger will variate the other path in a maximum of 0,5K! In case of same gas energies variations of the one streams outlet dewpoint by switching on and off the other stays below 0,2K
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Self-Cleaning Sample Gas Filter
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Compact size: approx. 250 x 220 x 200 mm Peltier cooler with 1 heat exchanger Adjustable dew point 3/5/10/15 °C Adjustable Delta T Control Analogue signal output Power supply 24 V DC Power max. 70 W
Save money, space,
time
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Dual P. Pump