Online Monitoring of Toxic Gases in Industrial Boiler Flue Gas | CO Sensing Device
Online Monitoring of Toxic Gases in Industrial Boiler Flue Gas | CO Sensing Device
For power‑generation gas‑fired boilers, the carbon monoxide concentration in flue‑gas exhaust is a key thermal parameter for evaluating combustion efficiency. At present, thermal power generation dominates China’s power supply. Coal consumption by thermal power plants accounts for over 50 % of the nation’s total coal consumption. Sulfur dioxide (SO₂) and carbon dioxide (CO₂) emissions from thermal power enterprises exert substantial impacts on air quality. Against the backdrop of the national initiative to develop a low‑carbon economy, energy conservation and emission reduction have become an inevitable trend for thermal power plants.
Boilers widely adopted in thermal power enterprises are mainly coal‑fired boilers and gas‑fired boilers. For coal‑fired boilers, measuring the carbon content of fly ash in flue gas enables effective assessment of boiler combustion efficiency and provides guidance for combustion optimization. For gas‑fired boilers, due to the special nature of their fuel, combustion optimization based on flue‑gas carbon‑monoxide control has proven more effective than optimization based on oxygen‑content control. Accordingly, the combustion efficiency of gas‑fired boilers can be assessed by online measurement of CO concentration in flue exhaust using
carbon monoxide sensors.
Self‑owned power plants in iron‑and‑steel smelting enterprises normally burn mixed gas consisting of blast‑furnace gas, coke‑oven gas and converter gas generated during steel production as the primary boiler fuel. Consequently, measured CO levels in boiler flue exhaust offer valuable reference for boiler combustion optimization. Superior combustion efficiency not only improves corporate economic benefits but also achieves energy conservation and emission reduction.
