Steve Donnelly - March 2013

CEMS Standards
 Stack emissions subject to legislation for many years
 Output in KTons/year has always been required, but standards did not specify how to establish
 Flow measurement sometimes but not always used
– many mass flows are calculated
 New standard will give requirements
– and gives guidance on flow metering techniques
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CEMS Standards

2001… LCPD, WID ……..IED
 EN 14181 Relevant European standard for on-going quality assurance of CEMS
Performance specifications and test procedures for CEMS  EN 15267-3
 Must now measure the mass of pollutants released, not just the concentration
 EN ISO16911 Will specify the requirements for flow measurement
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FPD580 StackFlowMaster
 Uses proven Torbar averaging pitot flow metering technology.
 Assures compliance
 with new European & US EPA regulations
 Optimises plant running hours
 Simplifies installation
 Reduces cost of ownership
 Integrates into new and existing CEMS
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FPD580 StackFlowMaster
 Low installation costs
 Max two stabbings to be cut into stack
(only one if not end supported version)
 Available in a variety of materials
 to suit different processes
 Multi-port instrument
 resistant to effects of changing flow profiles
 Reliable, long term solution
 no moving parts
 no electronics within stack
 Low risk of failure in the primary element
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How Averaging Pitot Tubes work
Differential Pressure Output
Connected to DP Measuring Instrument
The ABB averaging pitot:
High
Pressure
Low
Pressure
 Multi-port meter across full diameter
‘auto-traverses’
 Resultant differential pressure is proportional to the square of the volume flow rate
Upstream HP sensing holes
Outer Impact
Tube
Upstream HP sensing holes
LP Inner Tube
HP Inner Tube
Static LP pressure point
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FPD580 StackFlowMaster
Profiled flats
Low
Pressure
Tube
 Profiled flats around the downstream hole
 define the flow separation point
 stable pressure area at downstream tapping
 more constant coefficient at high velocities
 very wide turndown
 Provides a highly stable flow signal
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FPD580 StackFlowMaster
 Easier handling for large diameter stacks
 probes above 5 metres are in two pieces with centre coupling
 simplifies shipping and handling; may simplify installation
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FPD580 StackFlowMaster
 Averaging pitot tube technology
 approved under the new standards
 EN15267-3 & MCERTS approval
 satisfies QAL1 & QAL3 requirements.
 Optional automatic zero/span checks
 no physical user intervention required
 Supply with ABB CEMS analyser
 enables purchase of complete package from single supplier/manufacturer
 Enables CEMS upgrades
 to meet the new legislation
.
 Robust for long term use
 minimal maintenance
ABB Company Confidential

FPD580 StackFlowMaster
 Easy to install
 Requires only a simple one - or two - stabbing insertion
 Robust meter with a long service life
 Reduces risk of expensive failures
 Stronger construction than those with special profiles
 Offers good quality, stable measurement
 Due to unique sensor profile
 Special end support designs give greater integrity
 From ABB's many years of experience
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FPD580 StackFlowMaster

Torbar probe specifically designed for stacks
 25 or 60mm diameter
 optional integral RTD

Multivariable transmitter
 DP & absolute pressure measurement with temperature input
 remote mounted in interface unit
 Automatic interface unit
 3 versions

MCERTS pending for automatic zero/span versions
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FPD580 StackFlowMaster

Automatic zero/span checking option
 No external equipment to be connected
 Checks at the push of a button
 Optional Enclosure Heater
 For ambient temperatures below 0 ° C
 Purging
 Recommended for particulate concentrations > 30mg/m 3 and up to 300 mg/m 3
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FPD580 StackFlowMaster
Purge Air
Purge Air
 Cleans probe ports using pressurised air
 Enclosure contains multivariable transmitter for volume or mass flow measurement
 Enclosure contains sequencing controls/valves for automatic (regular) purging or on-demand purging
Contaminated
Flue Gas
Purge Air
Data
ABB Company Confidential

FPD580 StackFlowMaster
8D
Location:-
 Requirements for upstream lengths of stack, expressed in terms of the actual stack internal diameter D

Minimum upstream straight length is 8D
 Minor obstruction (sample probe) OK if > 3D upstream
ABB Company Confidential

FPD580 StackFlowMaster
Mass flow
Dust
O2 combustion
SOx, NOx, CO, HCl, HF, NH3…
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Data acquisition and reporting

FPD580 StackFlowMaster
 Wide range of stack temperatures
 suitable for stack gas temperatures up to
1200 ° C
 Wide range of stack applications
 Incinerator plants, power generators, refineries, metals processing, cement plants, crematoria
 Up to 8m diameter
 Handles solid contaminants
 Up to 300mg/m3
 automatic or manual purging of probe ports available
ABB Company Confidential

FPD580 StackFlowMaster
 Handles corrosive contaminants
 316L, 321H or alloy 625 sensor
 Hastelloy C transmitter diaphragms , PTFE seals; optional 316 transmitter housing
 Easier installation in large diameter stacks
 two piece probes with centre coupling
 Simplifies handling, transportation, installation
 Simplified QAL3 compliance
 Automatic option for tx span check
 No external equipment required
 Simple to size and specify
 Intuitive software for selection, sizing and coding
 Auto-updating facilities
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Stands 47 and 48
Steve Donnelly, CEMS specialist
ABB Company Confidential