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Recent content by spekuljak

  1. spekuljak

    Distillation Column: Reflux Rate & Relative Volatility

    Hola: 1)la expresión Volat. relat. = (pres. vapor liv./presion vapor pesado) es válida para mezcla binaria e ideales (coefic. de desviación de la idealidad, fases liq. y fase vapor = 1). Se demuestra fácilmente. 2)La expresión de comparación de volat. relativa con la relación de reflujo, se...
  2. spekuljak

    Distillation propylene-butylene reactor recycle.

    Thanks. Yes, the work is separate C3= from C4=. In general, this mixture is easy to distillate, but I am in searching if there were some reported or no reported cases that they were troublesome in packing columns (random or structured packing), based on the operative condition (pressure), and/or...
  3. spekuljak

    Distillation propylene-butylene reactor recycle.

    Hello. Somebody has experience (good or bad)to recovery monomers, from propylene-butylene recycle stream (from polymerization reactor) by distillation, in packed column?
  4. spekuljak

    Separator internal anti-foam spraying

    Right! Antifoam sprays is not a good solution. A suggestion is to premix the relative small antifoam stream with a small part of the treated oil (a recycle), to give a higher rate to the injection stream, allowing a good distribution on the perforated pipe distributor. Spekuljak.
  5. spekuljak

    Vacuum distillation

    Sometime the pH change allow to diminish or avoid the foam. In my experience, methanol-water in alcaline condition produces foam, but neutralization the liquor (pH 6,9 - 7,1) the foam dissapear. Be carefully with acidification, if the column material are steel or stainless steel, because the...
  6. spekuljak

    Vacuum distillation

    The foam in distillation. If it is not produced by entraped gases but tensioactive agent (more heavy than methanol and water in this case), there are three ways to figth it, a) antifoam agent, b)a better reboiler design (falling film, recirculation), c)to break the foam by means small live steam...
  7. spekuljak

    Ammonia stripper

    We can help you. We supplied several such a strippers. See our page www.sitingenieria.com
  8. spekuljak

    Effect of increasing Pressure on distillation

    More, if you increase the operating pressure, you need more energy supply to feed stream to maintain the product streams specs. The simulation is a valuable tool for such a case, because of allow to visualize the influence of the different variables in the process. zspekul@yahoo.com
  9. spekuljak

    Foaming in BASF AMDEA CO2 removal system

    We revamped a Removal unit in ammonia plant, wich had severe foam trouble (it was impossible to operate it without antifoam injection). The original column was filled with random ceramic ring, and was revamped with structured packing and proprietary auxiliaries, specific for structured packing...
  10. spekuljak

    Effect of increasing Pressure on distillation

    Increasing the top pressure of a topping, you will obtain a naphta with greater Reid vapor pressure, side product (Kero, G.O.) with lower Ignition and Flash point, and the bottom stream will have lower I.P. Obviously, this will be corrected with more live steam inyection, and more head venting.
  11. spekuljak

    Tema J1 or J2?

    Please, somebody help me what is the difference between heat exchanger TEMA J1 and J2? Thanks.
  12. spekuljak

    Ammonia removal from wastewater

    A suitable method is ammonia stripped with air, circulating in a close loop, in two columns. One of them is Stripping column, and the other is Absorber column, i.e. with an acid solution (sulfuric, clorhidric, fosforic) to obtain the salt (fertilizer), and avoid to exhaution of ammonia to...
  13. spekuljak

    Ammonia Stripping

    I does not know your geographical place.
  14. spekuljak

    Ammonia Stripping

    The better solutions are stripping with air or stripping with steam. The best of them depends of the ammonia conc. in water, among other variables, such as: In case of air stripping, the installation could be made in plastics, but the gaseous effluent must be postreated,with an adsober bed or...
  15. spekuljak

    Ammonium thiosulfate

    I am searching for technolgies suppliers for the Ammonium Thiosulfate production. spekuljak@sitingenieria.com
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