Last week INERCO presented its DeNOx technologies at the POWERGEN India & Central Asia. Thanks all the attendants for the interest and discussions about the technologies. Today we are sharing this information.
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2017 power gen presentation
1. Paper #42:
Advanced DeNOx
Technologies for the
Minimization of Capital
and Operating Costs in
Combustion Facilities
Speaker: Dr. Enrique Bosch
Co-Authors: Dr. Francisco Rodriguez, Enrique Tova,
Miguel Delgado, Miguel Morales
Power-Gen India & Central Asia 2017
2. โข Indian Environmental Regulation
โข Combustion Optimization System
โข Flexible Combustion
โข Advanced SNCR
โข Economic Assessment
3. โข Indian Environmental Regulation
โข Combustion Optimization System
โข Flexible Combustion
โข Advanced SNCR
โข Economic Assessment
4. Pollutant
TPP before Dec
31, 2003
TPP after Jan 1,
2004 before
Dec 31, 2016
TPP after Jan 1,
2017
Particulate
matter (PM)
100 mg/Nm3 50 mg/Nm3 30 mg/Nm3
SO2
600 mg/Nm3 units < 500 MW, 200
mg/Nm3 units โฅ 500 MW
100 mg/Nm3
NOX 600 mg/Nm3 300 mg/Nm3 100 mg/Nm3
Mercury
0.03 mg/Nm3
units โฅ 500 MW
0.03 mg/Nm3 0.03 mg/Nm3
Indian Environment Protection Amendment
โข New emission standards: PM, SO2, NOX and Hg based on
year of commissioning
5. Indian Environment Protection Amendment
โข New emission standards: PM, SO2, NOX and Hg based on
year of commissioning
Technologies available
โข Primary measures: Low NOX burners, OFAs,
combustion optimization systems
โข Secondary measures: Selective Non-Catalytic
Reduction (SNCR), Selective Catalytic Reduction (SCR)
Pollutant
TPP before Dec
31, 2003
TPP after Jan 1,
2004 before
Dec 31, 2016
TPP after Jan 1,
2017
NOX 600 mg/Nm3 300 mg/Nm3 100 mg/Nm3
6. โข Indian Environmental Regulation
โข Combustion Optimization System
โข Flexible Combustion
โข Advanced SNCR
โข Economic Assessment
8. โข Characterization of local combustion conditions next to boiler walls, in the
flame envelope of each burner or selected areas
โข Direct measurement of actual in-furnace gas concentrations (O2, CO,
NOX, CO2)
โข No averaged values. No interpolation software
โข Not affected by fuel type, dirtiness or optical-path alignment
Fixed non-cooled probes Retractable water-cooled probes
ABACO Combustion Optimization System
9. โข Location: Alberta, Canada
โข 405 MW gross load (385 MWn)
โข Sub-bituminous coal
โข Twin furnace design
โข 5 mills. MCR achieved with 4 mills
โข 8 corners โ 5 burner elevations +
CCOFA
โข Baseload unit (until 2015)
โข NOX baseline: 550 to 850 mg/Nm3
CCOFA
Level A
Level B
Level C
Level D
Level E
ABACO Combustion Optimization System
Case Study
10. โข Minimum modifications in
the combustion system
โข Operating variables for
ABACO setup
Item Operating variable Range
I Mills in service Mills A to E
II Auxiliary Air AA, EE and OFA 0 - 100%
III Auxiliary Air AB, BC, CD, DE ยฑ 20%
IV Fuel air ยฑ 20%
V Excess O2
ยฑ1,0% (absolute
scale)
VI Fuel nozzle tilts ยฑ30ยบ
ABACO Combustion Optimization System
11. ABACO Combustion Optimization System
โข INERCO supervises the performance of the ABACO to guarantee the
achievement of the NOX reduction and efficiency objectives in all the operating
scenarios
โข Daily and monthly reports with critical information about the unit are provided to
our clients
20%-30% NOX reduction
โ all scenarios
Efficiency improvement
0.6%
15,000 tons/yr CO2
avoided
12. โข Indian Environmental Regulation
โข Combustion Optimization System
โข Flexible Combustion
โข Advanced SNCR
โข Economic Assessment
13. Retrofit of coal pipe layout to:
โข Reduce NOX emissions
โข Improve boiler efficiency, flexibility and maintenance
BOOS MOOS
Conventional situation
NOX
LOI
Efficiency
Temperatures
Residence time
Flexible Combustion