209
8
CO/O
2
Control
8.6
Why Control CO?
8.6.1
Where Can CO Control be Used?
For the combustion of gaseous fuels, such as:
•
Natural gas H, L
•
Biogas
•
Process and exhaust gases
•
Hydrogen
And for fuels for which a reduction in the combustion air forms a CO edge, such as:
•
Lignite dust
•
Coal firing
For liquid fuels such as light fuel oil, control is possible on the basis of the CO concentration
in the exhaust gas only for so-called ’blue burners’ (blue flame).
For technical reasons, however, these are only available in the output range up to several 100
kW. For industrial furnaces, so-called ’yellow burners’ (yellow flame) are therefore used exclu-
sively today for liquid fuels. In the combustion of liquid fuels with a yellow flame, soot normally
forms first before the CO concentration rises noticeably. For this reason, CO control is not pos-
sible with oil burners with a yellow flame.
In the case of LAMTEC CO/O
2
control, you can regulate on the basis of either CO or O
2
, al-
ternatively. This can be done depending on the fuel or firing rate. Firing rate-dependent switch-
ing from CO control to O
2
trim may be necessary if, for example, the stability of the flame or
the NO
x
concentration in the exhaust gas makes it necessary to have a higher level of excess
air. ’On-the-fly’ switching from CO control to O
2
trim is possible in a firing rate-dependent man-
ner without the need to interrupt control.
Summary of Contents for AEC-TPS
Page 2: ......
Page 131: ...130 7 Operating Control and Displays 7 1 5 5 Deleting Curves Delete firing rate curve...
Page 148: ...147 7 Operating Control and Displays Channel configuration AL1 Fig 7 18 Channel configuration...
Page 157: ...156 7 Operating Control and Displays Fig 7 27 System CRCs menu...
Page 162: ...161 7 Operating Control and Displays Fig 7 32 IP setting menu...
Page 166: ...165 7 Operating Control and Displays Fig 7 35 Installation...
Page 167: ...166 7 Operating Control and Displays Fig 7 36 Installation...
Page 176: ...175 7 Operating Control and Displays Fig 7 49 Loading a protected dataset into the device...
Page 202: ...201 7 Operating Control and Displays Replacing a Module Fig 7 81 Module replacement menu...
Page 276: ...275 10 Maintenance 3 Restart CMS to complete the update...
Page 282: ...281 12 Appendix 12 5 EU Declaration of Conformity...
Page 283: ...282 12 Appendix...