초록 ▼

Methods are provided for the reduction in entrainment of solids and liquids, and loss of valuable chemicals such as catalysts, in processing and refining sequences that employ separation devices in which non-vapors are to be separated from vapors. The methods comprise regulating the velocities of th

Methods are provided for the reduction in entrainment of solids and liquids, and loss of valuable chemicals such as catalysts, in processing and refining sequences that employ separation devices in which non-vapors are to be separated from vapors. The methods comprise regulating the velocities of the incoming stream and the vapor being separated, and creating and maintaining the flow of the incoming stream tangentially to the inner surface of the separation vessel, so as to aid in the reduction in entrainment and loss of valuable chemicals.

대표청구항 ▼

Methods are provided for the reduction in entrainment of solids and liquids, and loss of valuable chemicals such as catalysts, in processing and refining sequences that employ separation devices in which non-vapors are to be separated from vapors. The methods comprise regulating the velocities of th

Methods are provided for the reduction in entrainment of solids and liquids, and loss of valuable chemicals such as catalysts, in processing and refining sequences that employ separation devices in which non-vapors are to be separated from vapors. The methods comprise regulating the velocities of the incoming stream and the vapor being separated, and creating and maintaining the flow of the incoming stream tangentially to the inner surface of the separation vessel, so as to aid in the reduction in entrainment and loss of valuable chemicals. n. 23. The composition according to claim 1, wherein said at least one coupler is present in a concentration ranging from about 0.005% to 5% by weight of the total weight of said composition. 24. The composition according to claim 1, further comprising at least one additional coupler different from 2-amino-3-hydroxypyridine and/or at least one direct dye. 25. The composition according to claim 1, wherein said acid addition salts of said at least one oxidation base are chosen from hydrochlorides, hydrobromides, sulphates, tartrates, lactates, and acetates. 26. The composition according to claim 1, wherein said acid addition salts of said at least one coupler are chosen from hydrochlorides, hydrobromides, sulphates, tartrates, lactates, and acetates. 27. The composition according to claim 1, further comprising at least one carrier appropriate for dyeing keratinous fibers. 28. The composition according to claim 26, wherein said at least one carrier is chosen from water and organic solvents. 29. The composition according to claim 1, wherein said composition has a pH ranging from about 4 to about 11. 30. A method of