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Recent content by TISM

  1. TISM

    Low Flow Gravimetric Powder Feeder

    Thanks itdepends, yes in this finely divided form the Al powder is pyrophoric hence it needs to be kept under inert gas from its formation until we can meter it into our system. TISM [rockband]
  2. TISM

    Low Flow Gravimetric Powder Feeder

    Thanks you very much I now have 3 options I did not have yesterday, including a non-commercial one if there is nothing off the shelf. I am however still open to suggestions just in case these pathways prove unsuitable for this system. TISM [rockband]
  3. TISM

    Low Flow Gravimetric Powder Feeder

    Dear Eng-Tipers, We are trying to find a device capable of metering fine powder (atomised aluminum-d50=15 microns) on a gravimetric basis at rates as low as 300g/h (10oz/h). Most off the shelf loss-in-weight units we have identified are unable to control at such low flows. The...
  4. TISM

    Vapour Pressure-Zinc Chloride ZnCl2

    I am trying to generate a curve for the vapour pressure of liquid zinc chloride as a function of temperature. If anyone has a reference I would be very greatful. Alternatively if anyone knows the Antoine coefficients for zinc chloride that would help me out. Thanks in advance, TISM [rockband]
  5. TISM

    Pumping Kerosene

    Dear All, we are trying to pump 15 lpm odourless kerosene for continuous operation (hours at a time). We have tried both 17 lpm and 30 lpm vane pumps designed for organic use (diesel, kero, light oils). In both cases the flow rate starts at a reasonably acceptable level (about 14 lpm) and drops...
  6. TISM

    Ejector efficiency

    Try www.foxvalve.com/conveying_eductors/ TISM [rockband]
  7. TISM

    Screw Feeder Pulse Reduction

    We are trying to reduce the pulse delivery of powder from a screw feeder operating at the bottom of its speed limit. Does anyone have any clever ideas for modifying the delivery tube to reduce this effect?? Thanks in advance, TISM [rockband]
  8. TISM

    TiCl4 Containment at Elevated Temperature

    I would be interested from hearing from anyone with experience in containing superheated (900-1000C) titanium tetrachloride (TiCl4) vapour. It appears that the TiCl4 manufacturing process deals with such superheated vapours, however details of the materials employed do not seem to be in the...
  9. TISM

    Containment of superheated titanium tetrachloride

    I would be interested from hearing from anyone with experience in containing superheated (900-1000C) titanium tetrachloride (TiCl4) vapour. It appears that the TiCl4 manufacturing process deals with such superheated vapours, however details of the materials employed do not seem to be in the...
  10. TISM

    BMS Grade Combustion Detection

    Thank you very much! TISM [rockband]
  11. TISM

    Detecting flameless combustion

    Dear Hacksaw, Thanks for the benifit of your wisdom. The resources avaiable here are limited but your comments about any changes being major and worthy of HAZOP are right on the money. But at least I have more options than I started with. Best Regards, TISM [rockband]
  12. TISM

    Detecting flameless combustion

    Dear hacksaw, In this case I need to identify loss of combustion, particularly during start-up from cold. I like the idea of a temperature based solution which I assume looks for a continual increase in temperature as proof of combustion. If so, how is the bet way to interface such...
  13. TISM

    Detecting flameless combustion

    Dear Jcubed00, Thanks for thee lead. I might get home before christmas after all! TISM [rockband]
  14. TISM

    Detecting flameless combustion

    Dear Eng-Tipsters, Help! I am stick in rural India commissioning a rice hull furnace. Due to the lack of propane we need to modify the start-up sequence to start with rice-hulls from cold. We have propane pilot burners monitored by a BMS as an ignition source and overall PLC...
  15. TISM

    BMS Grade Combustion Detection

    Dear Eng-Tipsters, Help! I am stick in rural India commissioning a rice hull furnace. Due to the lack of propane we need to modify the start-up sequence to start with rice-hulls from cold. We have propane pilot burners monitored by a BMS as an ignition source and overall PLC...
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