give the precautions required to be taken during mixing of oily phase and aqueous phase
Answers
Explanation:
Abstract: The ease of formation of emulsions is described for some crude oil systems in which the mixing conditions, oil type, aqueous phase composition and concentration are varied. The most stable emulsions have quality that ranged between 10 and 20% while the least stable have quality that ranged between 50 and 60%. Droplet coalescence was highest at 2 min agitation and below 5000 rpm. Addition of 70% FY crude to BL crude caused 24% emulsion stability increase while a decrease of 50% in emulsion stability was observed upon dilution with hexane relative to toluene. The stability of emulsions is not affected by variation in brine concentration within 100-200,000 ppm range. In general, optimum pH for resolution of alkaline-based emulsions was between 10 and 11 and between 6 and 7 for brine. Finally, the effect of increasing the pH of the aqueous phase is explored. It is shown that, at sufficiently high pH, unstable emulsions were produced while at low pH, stable emulsions were formed.
Precautions required to be taken during mixing of oily phase and aqueous phase are as follows:
1. The mixing process has to be studied properly.
2. The correct technique should be employed.
3. One should always wear gloves.
4. Mixing process should be done under proper supervision.
5. pH of the both should be properly checked.