摘要:
The present subject matter relates generally to methods for treating an organic feed. More specifically, the present subject matter relates to methods for reducing the water content of an organic feed before the organic feed enters a hydrogenation zone, thereby by improving the activity, conversion, and life of the hydrogenation catalyst. The hydrogenation zone product stream is then sent to a phenol recovery zone.
摘要:
A compound represented by the following formula (1).
(in formula (1), each R 1 independently represents a divalent group having 1 to 30 carbon atoms, each of R 2 to R 7 independently represents a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, a thiol group or a hydroxyl group, in which at least one R 5 represents a hydroxyl group or a thiol group, each of m 2 , m 3 and m 6 is independently an integer of 0 to 9, each of m 4 and m 7 is independently an integer of 0 to 8, m 5 is an integer of 1 to 9, n is an integer of 1 to 4, and each of p 2 to p 7 is independently an integer of 0 to 2.)
摘要:
A process for making phenol and/or cyclohexanone comprises: (A) oxidizing a cyclohexylbenzene feed to obtain an oxidation product comprising cyclohexylbenzene, cyclohexyl-1-phenyl-1-hydroperoxide and phenol; (B) separating at least a portion of the oxidation product to obtain a first fraction comprising cyclohexyl-1-phenyl-1-hydroperoxide and a second fraction comprising cyclohexylbenzene and phenol; (C) removing at least a portion of the phenol from at least a portion of the second fraction to obtain a third fraction; (D) recycling at least a portion of the cyclohexylbenzene in the third fraction to the oxidizing step (A); and (E) contacting at least a portion of the cyclohexyl-1-phenyl-1-hydroperoxide in the first fraction with an acid catalyst in a cleavage reactor under cleavage conditions to obtain a cleavage product comprising phenol and cyclohexanone.
摘要:
An industrially advantageous purification method for a cyclic compound with a particular structure is provided. A purification method for a cyclic compound, including a step of contacting a solution containing a cyclic compound with a particular structure and an organic solvent with water or an acidic aqueous solution.
摘要:
A method for the fractionation of cashew nut shell liquid comprises solvent-solvent extraction using a polar solvent component and a non-polar, non-acidic, non-basic solvent component; wherein the polar solvent component is a mixture comprising: i) a first solvent comprising a fluorinated solvent; and ii) a second solvent comprising a solvent satisfying the following parameters: a) Hildebrand parameter greater than 10 (kcal dnT -3 ) 0,5 and b) dipolarity/polarizability (π), hydrogen bond acidity (a), and hydrogen bond basicity (β) having the following relationship: α/(α + β + π) > 0.5; β/(α + β + π) 0.3.
摘要:
The present application concerns a process for the removal of hydrocarbons from an aqueous stream, which process may include conducting a phenol-containing water stream into a separation column, separating the phenol-containing water in the column using heat to form an overhead portion and a bottoms portion, and collecting the overhead portion as well as the bottoms portion. Further, the process may include adding an eluent to an aqueous stream, thereby forming an aqueous mixture, subsequently conducting the aqueous mixture into a separation vessel, wherein it is allowed to settle into two phases, which form a hydrocarbon stream and a phenol-containing water stream, subsequently collecting the hydrocarbon stream, and conducting the phenol-containing water stream to the separation column for further separation.
摘要:
The invention relates to a method for using the natural biophenols, tyrosol and hydroxytyrosol, contained in the industrial by-products that result from the crushing and processing of olives, whether from three-phase or two-phase presses, and the husks and cakes thereof. The method produces a mixture of the two biophenols with a purity of more than 90% and yields of between 0.1 and 1.5% depending on the product and the processed raw material. The invention essentially comprises the selective extraction and fractionation of the resulting mixtures using solvents