Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Condensing gas boiler ignition cause analysis

217 views

Published on

Condensing gas boiler is full use of the gas-fired boiler flue gas waste heat boilers, condensing boilers can improve combustion efficiency, and therefore to be welcomed. But the blind pursuit of flue gas waste heat utilization, the gas boiler inflicted closed mode, condensing boilers can also cause ignition phenomenon. http://www.waterfiretubeboiler.com/Gas-fired-boiler.html

Published in: Technology
  • Be the first to comment

  • Be the first to like this

Condensing gas boiler ignition cause analysis

  1. 1. Condensing gas boiler ignition cause analysis Condensing gas boiler is full use of the gas-fired boiler flue gas waste heat boilers, condensing boilers can improve combustion efficiency, and therefore to be welcomed. But the blind pursuit of flue gas waste heat utilization, the gas boiler inflicted closed mode, condensing boilers can also cause ignition phenomenon. General condensing gas boiler ignition the following reasons: A : condensing gas boiler combustion is incomplete Due to the heavy gas boiler fuel component caused incomplete combustion of fuel, so relying on the hot surface GAH accumulate combustibles. Crushing capacity condensing gas boiler residue other than purchase, C4 raffinate cracked residue and fuel for many, their components heavier, high viscosity, low ignition point, easy analysis of carbon, steam atomization of fuel combustion at very poor, high levels of macromolecules droplets, oil gun nozzle easy to plug, so often affects the quality of atomization and combustion of fuel. If the combustion adjustment run properly, insufficient air flow or unreasonable fluctuations with the wind and process conditions, it will too late to make the black burn completely and produce black smoke. The gas boiler lagging not completely burning oil particles are brought to the boiler flue gas heat exchanger surface of the tail GAH start deposition, which also provides the material basis for the secondary combustion n from the recent parking meter personnel flame monitor the inspection results, and have found no problems. Experience analysts believe the accident basically produce a lot of smoke when fuel combustion is bad, black smoke obscured the monitor to enter or probe, produce false signals caused alarm parking. In addition, frequent start and stop the process of condensing boilers, furnaces lag due to poor combustion conditions, the fuel is not easy to burn at lower flue gas velocity, can easily cause a lot of unburned fuel deposition; boiler over low load running time long, combustion instability, smoke speed is low, unburned combustibles easily deposited in the corrugated board; past lessons and experiences also confirmed the accident: air preheater rotor ash fouling, worn leakage, excess air ratio rear flue or low oxygen content control such as fuel due to lack of oxygen can lead to incomplete combustion. Currently, the company A, B furnace air preheater rotor has a different
  2. 2. degree of leakage risks; 1997 after gas boiler still can not run at full capacity due to various reasons, flue gas flow rate is low; sometimes improve the thermal efficiency of condensing boilers and blindly to reduce the tail of excess air. These are secondary combustion air preheater leaving a hidden danger. B : condensing gas boiler ignition frequent purging Frequent purging gas condensing boilers for ignition of combustible materials deposition provides ample resurgence ignition conditions. Boiler flue gas flow rate is low ignition process, the oxygen content of the combustion system space is much higher than the normal operation again, like B had successive ignition furnace was purged, so they make still with heat due to unburned combustibles have plenty of excess oxygen and resurgence.Condensing gas boiler is full use of the gas-fired boiler flue gas waste heat boilers, condensing boilers can improve combustion efficiency, and therefore to be welcomed. But the blind pursuit of flue gas waste heat utilization, the gas boiler inflicted closed mode, condensing boilers can also cause ignition phenomenon. General condensing gas boiler ignition the following reasons: A condensing gas boiler combustion is incomplete Due to the heavy gas boiler fuel component caused incomplete combustion of fuel, so relying on the hot surface GAH accumulate combustibles. Crushing capacity condensing gas boiler boiler residue other than purchase, C4 raffinate cracked residue and fuel for many, their components heavier, high viscosity, low ignition point, easy analysis of carbon, steam atomization of fuel combustion at very poor, high levels of macromolecules droplets, oil gun nozzle easy to plug, so often affects the quality of atomization and combustion of fuel. If the combustion adjustment run properly, insufficient air flow or unreasonable fluctuations with the wind and process conditions, it will too late to make the black burn completely and produce black smoke. The gas boiler lagging not completely burning oil particles are brought to the boiler flue gas heat exchanger surface of the tail GAH start deposition, which also provides the material basis for the secondary combustion n from the recent parking meter personnel flame monitor the inspection results, and have found no problems. Experience analysts believe the accident basically produce a lot of smoke when fuel combustion is bad, black smoke obscured the monitor to enter or probe, produce false signals caused alarm parking.
  3. 3. In addition, frequent start and stop the process of condensing boilers, furnaces lag due to poor combustion conditions, the fuel is not easy to burn at lower flue gas velocity, can easily cause a lot of unburned fuel deposition; boiler over low load running time long, combustion instability, smoke speed is low, unburned combustibles easily deposited in the corrugated board; past lessons and experiences also confirmed the accident: air preheater rotor ash fouling, worn leakage, excess air ratio rear flue or low oxygen content control such as fuel due to lack of oxygen can lead to incomplete combustion. Currently, the company A, B furnace air preheater rotor has a different degree of leakage risks; 1997 after gas boiler still can not run at full capacity due to various reasons, flue gas flow rate is low; sometimes improve the thermal efficiency of condensing boilers and blindly to reduce the tail of excess air. These are secondary combustion air preheater leaving a hidden danger. 2, condensing gas boiler ignition frequent purging Frequent purging gas condensing boilers for ignition of combustible materials deposition provides ample resurgence ignition conditions. Boiler flue gas flow rate is low ignition process, the oxygen content of the combustion system space is much higher than the normal operation again, like B had successive ignition furnace was purged, so they make still with heat due to unburned combustibles have plenty of excess oxygen and resurgence. Gas hot water boiler manufacturer: http://www.gasoilfiredboiler.com/gasfiredhotwaterboiler/ Get Gas fired boiler price: http://www.gasoilfiredboiler.com/gasfiredsteamboiler/ sale email: zzboilerailsa@gmail.com

×