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Engineering and economic aspects of continuous soapstock acidulation
Author(s) -
Stahle C. W.
Publication year - 1965
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540106
Subject(s) - yield (engineering) , pulp and paper industry , process (computing) , waste management , chemistry , process engineering , environmental science , business , computer science , materials science , engineering , metallurgy , operating system
Recovery of 98舑100% of the total fatty acid content of soapstock may be achieved by continuous acidulation of soapstock with minimum acid consumption. The relatively high reaction pH allows the use of ordinary stainless steel equipment. By use of a two‐stage separation process, quality acid‐oil may be produced from even the most difficult foots, with a by‐product stream high in phosphatides. Acid water from the system is suitable for waste disposal with little or no additional treatment. Analysis of the process economics as compared to conventional batch acidulation shows that a 2舑4 year system payout may be realized through acid savings, improved oil yield, and reduced labor costs.