Method for transesterification of methyl oleate of the glycerol formal

摘要

method of transesterification of methyl oleate formalem glycerol is that for the first reactor of the reaction vessel consisting of two tank reactors continuously distributes to formal glycerine, methyl oleate and naoh solution in methanol at the molar ratio formalu glycerol to methyl oleate as 1.5 - 2 and catalyst content of 0.02 - 0.04 mol naoh per mole of methyl oleate.transesterification is at a temperature 60u00b0c under pressure of 150 psi, separate methanol from reaction mixture in odbieralnikach and poreakcyjnu0105 heading for the first degree of tertiary extraction przeciwpru0105dowej, mixer, which drives up layer in odnu0105 from phase separation in the second degree, extractiona mixture of water and acids ester end groups of the mixer is to odstojnika, in which a mixture rozwarstwia in two phases: - upper acids ester end groups, which as the raffinate and is heading for a second degree of extraction, and the lower water, aqueous extract, acting formalu glycerine, which head e to neutralization and distillation regeneration formalu glycerol.the raffinate and gas mixing piece on the second degree of extraction is mixed with aqueous extract of third degree extraction and odstojniku distributes in the aqueous phase and acids ester end groups.the acids ester end groups as a raffinate ii heading to the third degree of extraction, and the aqueous layer as the extract ii is in the first step extraction raffinate ii in gas mixing piece third degree extraction is mixed with fresh water of 8 - 12% of the flux mixture poreak the candidate mains first step extraction.a mixture of water and acids ester end groups with mixer third degree extraction is to odstojnika third stage extraction, which is allocated to the acids ester end groups - raffinate iii, who is heading to drainage and water - extract layer iii, which is the second degree of ex traction.the raffinate estrowy with third degree extraction containing 0.4 - 0.7 cg / g water is continuously into the evaporator, oddestylowuje water to obtain brine leaving the wyparku0119 concentration water not more than 0,02 cg / g.while the aqueous extract with first degree extraction, whose ph is 8 to 9.5 continuously distributes to the mixer equipped with a ph adjuster, and sulfuric acid at a concentration of 40 - 60 cg / g of h2so4, in such proportions that the ph zneutralizowanego was 5 - 5.5, the neutralized extract water continuously distributes to the evaporator.of which is taking the distillate containing water with methanol, methanol distillate after regeneration back to process or installation of effluent and decoction of furnace distributes on the column rektyfikacyjnu0105, the columns from: - fraction containing wet water and glycerol, which and it turns on wyparku0119 vacuum - a second fraction containing glycerol formal and less than 0,05 cg / g water,which turns to flow fresh formalu glycerol led to the transesterification process, - decoction as waste.