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  1. 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...
  2. 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]
  3. 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...
  4. 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]
  5. 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...
  6. 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...
  7. 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...
  8. 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...
  9. TISM

    High Integrity Safety Switches

    My application involves measuring the temperature in a furnace. I need to provide a hardwired High temperature safety switch to operate a deluge system. I was going to activate this stand-alone switch via a 4-20mA signal from a close coupled "puck" type transmitter wired to the K-Type...
  10. TISM

    Safety Switch Configuration

    My application involves measuring the temperature in a furnace. I need to provide a hardwired High temperature safety switch which I was going to activate via a 4-20mA signal from a close coupled "puck" type transmitter wired to the K-Type. I also want to provide operators with an...
  11. TISM

    Viscosity value of gaseous TiCl4

    I need an expression for the viscosity of gaseous TiCl4 (titanium tetrachloride) at around 1000C (800-1200C). Perhaps someone with property predicting software (Aspen or PREDICT) could run a couple of temperatures so I can fit a curve? If so I'd be very greatful. Thanks in advance, TISM [rockband]
  12. TISM

    Antoine coefficients magnesium

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

    CIP Volumes to flush lines

    I am looking for imformation regarding the amount of flush water (in terms of loop volumes) required to clean residual milk products (or other miscible fluids) from a delivery line? I have some empirical data of my own which I can share, but would like to know of any one elses experience or...
  14. TISM

    Optimum pH for NaOH based Wet SO2 Scrubber

    I am looking for assistance with the best pH to operate a small NaOH based scrubber for controlling low concentrations (75 ppm ) of SO2 from a CHP exhaust, with a high CO2 content. I wish to minimise NaOH losses to carbonate formation while still removing SO2. Technical references as well as...
  15. TISM

    Alkali Based Wet Scrubber

    I am looking for the help with the best pH to operate a small NaOH based scrubber for controlling low concentrations (75 ppm ) of SO2 from a CHP exhaust, with a high CO2 content. I wish to minimise NaOH losses to carbonate formation while still removing SO2. Technical references as well as field...

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