3results about How to "High partition coefficient" patented technology

The invention belongs to the technical field of environmental engineering and chemical separation, and particularly relates to a deep-eutectic solvent composition for efficiently extracting phenolic compounds and a preparation method of the deep-eutectic solvent composition. The deep-eutectic solvent composition for efficiently extracting the phenolic compounds, provided by the invention, consists of a hydrogen bond acceptor and a hydrogen bond donor in a molar ratio of (1-2): (1-9), the hydrogen bond donor comprises n-caprylic acid or n-hexyl alcohol; the hydrogen bond receptor comprises 1-ethyl-3-methylimidazole chloride or tetrabutylammonium bromide. The eutectic solvent composition has the advantages of high partition coefficient, low viscosity, high selectivity, rapid phase separation, environmental friendliness and the like, can efficiently extract phenol, resorcinol, o-cresol, m-cresol and p-cresol, and has single-stage extraction efficiency gt; the regeneration rate is high, and the method is suitable for high-concentration phenolic wastewater, polyhydroxy phenolic wastewater, continuous process and low-toxicity emission requirement scenes.

The present application relates to a kind of solvent and method for separating high purity oleuropein with high efficiency.The mixed solvent is selected from: (1) the mixed solvent consisting of n-butanol, dichloromethane, methanol and water, wherein the volume ratio of n-butanol, dichloromethane, methanol and water is 1: (5-15): (1-5): (5-15), preferably 1: (5-10): (1-2): (5-10);(2) the first solvent, the first solvent is the upper layer after the mixed solvent of (1) is left to separate;(3) the second solvent, the second solvent is the lower layer after the mixed solvent of (1) is left to separate;And (4) the combination of first solvent and second solvent.The present application also includes the method for separating oleuropein using the mixed solvent.

The utility model provides a phenol tower distributor for a phenol ammonia recovery system, which comprises a phenol tower and an MIBK feed distributor, the phenol tower comprises a bottom fixed part, a barrel and a top elliptical head part, a support convenient for supporting and fixing the MIBK feed distributor is arranged in the barrel, the MIBK feed distributor comprises an MIBK main tank, a first branch tank, a second branch tank and a third branch tank, and the first branch tank, the second branch tank and the third branch tank are communicated with each other. The phenol tower distributor rectification method is mature in technology and simple to operate, the purity of the regenerated extractant is high, and the influence on the extraction effect is small when the extractant is recycled; the alkali washing back extraction method has the characteristic of low energy consumption, but the impurity content of an extracting agent regenerated by the back extraction method is higher, and the recovered crude phenol exists in the form of a sodium phenolate solution. And compared with MIBK, the diisopropyl ether has the advantage that the distribution coefficient of the diisopropyl ether to polyphenol is low.