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  • Users: op9
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  1. op9

    Liquid propane fired burners

    I have installed and commissioned a number of large burners on asphalt plants using propane in the liquid form (LP). I have been asked to source a similar fuelled burner of about 13.8 MW for a watertube boiler. I cannot seem to find one. Obviously one difference is that asphalt plant rotary...
  2. op9

    Common exhaust flues

    I have a situation with an existing asphalt plant rotary drier fired with a burner on LPG at 28GJ/Hr (26.5 x 10^6 BTU/hr). This was commissioned by me over 10 yrs ago. To this is to be added another rotary drier to dry RAP (Recycled Asphalt Payment) which is the old pulverized asphalt from old...
  3. op9

    Common exhaust flues

    I have a situation with an existing asphalt plant rotary drier fired with a burner on LPG at 28GJ/Hr (26.5 x 10^6 BTU/hr). This was commissioned by me over 10 yrs ago. To this is to be added another rotary drier to dry RAP (Recycled Asphalt Payment) which is the old pulverized asphalt from old...
  4. op9

    Common Flues

    I have a situation with an existing asphalt plant rotary drier fired with a burner on LPG at 28GJ/Hr (26.5 x 10^6 BTU/hr). This was commissioned by me over 10 yrs ago. To this is to be added another rotary drier to dry RAP (Recycled Asphalt Payment) which is the old pulverized asphalt from old...
  5. op9

    Photoresisistor flame scanner

    Has anyone had practical experience with running long lengths of cable between a photoresistor flame scanner and a burner controller? More specifically a Siemens LAL2.65 and a QRB1 scanner. The documents say it can be run up to 200mtrs with RG62 coax. I have had some other advice not to use it...
  6. op9

    Pumps for Hot oil or thermal fluid.

    I have used SIHI pumps for this application many times. I have now been offered a SALMSON pump. The oil I am pumping is only at 200degC max. The pump curves for these two brands are almost identical as is their model numbers. The SIHI pump uses multiple lip seals bearing on a SS wear sleeve...
  7. op9

    Problems with Dungs Gas valve

    My problem is with a Dungs MVD 515/5 (1 1/2") gas valve here in Australia. It replaced an old 215/5 which had a burnt out rectifier board. Local agent did not have the same so supplied the higher pressure rated version. Has a 110VAC coil for this particular site. It worked for about a month...
  8. op9

    Dungs gas valve problems

    My problem is with a Dungs MVD 515/5 (1 1/2") gas valve here in Australia. It replaced an old 215/5 which had a burnt out rectifier board. Local agent did not have the same so supplied the higher pressure rated version. Has a 110VAC coil for this particular site. It worked for about a month...
  9. op9

    Auto ignition temp of natural gas

    In Australia our gas codes allows burners to be fired into a chamber which has reached a minimum temperature of 750degC (1382degF), without flame monitoring. This being well above the auto-ignition temp of nat gas which is just under 500degC. Other gases like propane being slightly less...
  10. op9

    Auto ignition of Natural Gas

    In Australia our gas codes allows burners to be fired into a chamber which has reached a minimum temperature of 750degC (1382degF), without flame monitoring. This being well above the auto-ignition temp of nat gas which is just under 500degC. Other gases like propane being slightly less...
  11. op9

    Pulse firing gas valve

    I am interested in sourcing a manufacturer of gas valves that can be used for an on/off pulse burner system for a brick kiln. I am aware that Kromschroder have the VAS series valves ideally suited for this application....up to 6 pulses/min. However they are only rated to 50kPa. I need a valve...
  12. op9

    Unusual emissions on heavy fuel oil

    Hi All, I have to investigate a fault next week on board a ship where they have an Aarlborg oil fired boiler (Danish). The burner is steam atomised operating at approx. 15MW (50 MM Btu/hr)max. The problem they are having is that they are emitting small carbon/ash balls out of the stack when the...
  13. op9

    Unusual emissions on heavy fuel oil

    Hi All, I have to investigate a fault next week on board a ship where they have an Aarlborg oil fired boiler (Danish). The burner is steam atomised operating at approx. 15MW (50 MM Btu/hr)max. The problem they are having is that they are emitting small carbon/ash balls out of the stack when the...
  14. op9

    LPG mixture vapour pressure

    It appears that the vapour pressure of propane and propylene vary considerably (ie by maybe 40psi +, propylene being higher). I have a situation with a liquid LPG burner where the supply is supposedly 95%+ propane. I am having premature vapourisation problems because I think that there may be a...
  15. op9

    Excess air in a rotary drier

    I have been involved with burner application on aggregate driers for the asphalt industry for some time. Modern burners are total air burners where all combustion air enters through the burner. Older burners supplied only about 40% combustion through the burner, the remaining being induced...
  16. op9

    Excess air in a rotary drier

    I have been involved with burner application on aggregate driers for the asphalt industry for some time. Modern burners are total air burners where all combustion air enters through the burner. Older burners supplied only about 40% combustion through the burner, the remaining being induced...
  17. op9

    Heating fuel oil

    I am involved with converting an industrial burner from light oil to heavy oil firing. Thats not a problem. However the fuel storage tank needs heating to about 60-70degC. Normally that would be accompished with steam (if available) or electric heating. They want to use an old bitumen tank...
  18. op9

    Fuel oil heating

    I am involved with converting an industrial burner from light oil to heavy oil firing. Thats not a problem. However the fuel storage tank needs heating to about 60-70degC. Normally that would be accompished with steam (if available) or electric heating. They want to use an old bitumen tank...
  19. op9

    Heating fuel oil

    I am involved with converting an industrial burner from light oil to heavy oil firing. Thats not a problem. However the fuel storage tank needs heating to about 60-70degC. Normally that would be accompished with steam (if available) or electric heating. They want to use an old bitumen tank...
  20. op9

    Ignition of coal

    I am well experienced with burners using gas and oil of varying grades and qualities. However I have been asked if it is feasible to use a gas burner or burners (permanent installation) to be used to do the initial ignition of coal on a travelling grate stoker. The stoker is about 4mtrs wide...

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