US3804722 * Sep 11, 1970 Apr 16, 1974 Montedison Spa Extractive distillation of pyridine-water azeotrope with a bisphenolUS3804722 * 1970年9月11日 1974年4月16日 Montecatini Edison Spa,It Extractive distillation of pyridine-water azeotrope with a bisphenol...
Pyridine cannot be completely separated from water by conventional distillation or rectification because of the minimum boiling azeotrope. Pyridine can be readily separated from water by using azeotropic or extractive distillation. Typical examples of effective agents are: by azeotropic distillation, methyl ...
Separation ofpyridine-waterazeotrope by potassium carbonate 采用碳酸钾分离吡啶-水恒沸物 更多例句>> 补充资料:焦化厂含酚氰废水处理设计(见含酚氰废水处理设计) 焦化厂含酚氰废水处理设计(见含酚氰废水处理设计) design of phenolic and cyanic waste water treatment for coking plant ...
azeotropebinary mixturesdehydrationdistillationSeveral ion-exchange and neutral membranes were examined in the pervaporation of water-pyridine mixtures. Carboxylic and sulfonic ion-exchange membranes were used with hydrogen counterion and additionally with trimethylammonium, triethylammonium, and tributylammonium ...
A water azeotrope was then collected by vacuum distillation at an elevated temperature. After complete dehydration and removal of toluene, the reaction mixture was cooled to room temperature and the distillation set was replaced by a condenser. The reaction mixture was then heated to 80° C. and...
2-Chloropyridine is extracted from the reactor effluent in known manner and excess pyridine is preferably separated as a pyridinewater azeotrope which is recycled to the reactor. In examples, a preheated equimolar mixture of pyridine and water is fed into a glass tube packed with granular silicon...
Experimental data were obtained on the composition and boiling point of some ternary azeotropes in pyridine — water — solvent systems and from the equilibrium between liquid and vapor at atmospheric pressure in the carbon tetrachloride — pyridine system....
AzeotropeSaltIsobaric vapor–liquid equilibrium data at 705±1 mm Hg for the systems water–pyridine and water–pyridine–CaCl 2 were obtained using the modified Othmer circulation still. The experimental data for the water–pyridine system exhibited an azeotropic point at a water composition of 75.0...
The same separation has been studied in the previous paper (Wu et al, 2009) by using the design of a heterogeneous azeotropic distillation system where a two-column heterogeneous azeotropic column system was devised making use of the new minimum-boiling azeotrope between toluene and water. A ...
Pyridine is separated from mixtures of pyridine and isovaleric acid methyl ester by subjecting the mixture of pyridine and isovaleric acid methyl ester to a distillation with the addition of water, separating off the isovaleric acid methyl ester as an azeotrope with water and recovering pyridine ...