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  • Users: pbrod
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  1. pbrod

    piping systems mapress

    dear all, does anyone has experience with the new piping systems like for example the geberit mapress system for industrial installations? thanks for the reply! kind regards
  2. pbrod

    steam ejector problems

    dear all, we have a vacuum problem in a dimethylphtalate/water-methanol stripping column. after a washing section the mixture with aprox 2% water/methanol is entering the stripping column at about 130°C. a vacuum unit (Nash) should keep the column at 50mbara using 3barg steam. we have no...
  3. pbrod

    ethanol drying

    Dear all, We hava about 150m³ of ethanol with 10% water that we need to dry so we can re-use it in our process. what would be the most economic and easy way of doing this. We were thinking about a membrane system or use zeolite. Anyone has experience? Are there rental systems for this...
  4. pbrod

    deposits in a thermal oil system (mobiltherm)

    Dear All, We have a deposit problem in our thermal oil system (150m³) It is a two temperature system with a heat exchanger heating the oil to 170°C and a cold loop with a temperature of 70°C. Heating is with a steam shell and tube exchanger, cooling is done in a 200m² air cooler. Since long...
  5. pbrod

    transmitter + controller for a dP flow measurement

    Hi, We would like to replace our dP measurements for a venturi flow measurement. There are 4 measurement venturi's in a reaction zone measuring the air flow to 4 reactors. It is difficult to connect these new systems with our old DCS system. Would the following be possible? - a new dP...
  6. pbrod

    efficiency improvement by local cos phi compensation

    Hi, An energy study indicated that we could save 3-4% active power consumption by installing condensator banks near some of our biggest electric motors (range 35-110kWe). the local cos phi is in the range of 0.60 - 0.85. A company offerd us a capacitor banks to have a local cos phi of around...
  7. pbrod

    vacuum problems in stripping column

    Dear all, We have a stripping colum for stripping alcohol and water out of phthalates. It's a two section column with a steam ejector (500kg/u) between the two sections to reach a vacuum of 10mbara in the bottom and a serie of three steam ejectors using 8bar steam care for the vacuum. The top...
  8. pbrod

    contaminated boiler feedwater

    Dear all, recently our boiler feedwater was contaminated with a large quantity of bio diesel and vegetable oil. The pH dropped from 9,5 to 4,5 and the purge water was a milk like substance. We do not have a good idea on the quantity of bio diesel and vegetable oil that came in the feedwater...
  9. pbrod

    power factor of syncronous generator

    Hi, I have a question about the power factor of a 4500kVA (rated power) syncronous generator. The generator has the following characteristics: 4500kVA rated power 0,8 rated power factor 6,3kV rated voltage 50Hz rated frequency This installation will be used for power production using a steam...
  10. pbrod

    corrosion near burner zone of oxidation reactor

    We are facing severe corrosion problems on the wall of 5x5m vent gas duct before an oxidaton catalyst. In this duct one natural gas burner is installed to preheat the air going to the catalyst during startup. The material is HII steel welded on a structure made of metal beams. The sheets are...
  11. pbrod

    pump selection for a boiler feedwater pump, pressure balance system

    Hi, We need to make a selection for our new boiler feedwater pump. The pump is a 750m (75bar) high pressure pump working at different flow rates. 20m³/h for 2000h/y 40m³/h for 3000h/y 60m³/h for 3000h/y the pump is stopped aprox 20 times a year. We got several offers with different designs...
  12. pbrod

    torrefied biomass combustion

    Hello, I'm investigating the posibilities to burn torrefied biomass in a classical boxer fired PC boiler. the main aspects we want to investigate are: - explosion safety/fire in the coal mills when processing torrefied biomass. An assesment of the risk of milling this material. - combustion...

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