Abstract: The specification provides a method of producing cumene hydroperoxide by continuous aqueous-emulsion oxidation at a high temperature and pressure in a cascade of reactors, wherein the process is conducted in the presence of a mixture of an aqueous solution of an ammonium salt with a concentration of 0.001–0.5 mass % and an aqueous solution of ammonia with a concentration of 0.001–0.5 mass %, which mixture is fed into each oxidation reactor in an ammonia:ammonium salt mass ratio of 1:100 to 100:1.

Abstract: A process for producing a phenol product generally comprises a first step comprising reacting in a first reactor a feed stream comprising cumene hydroperoxide and water with an acid catalyst to produce an effluent comprising the phenol product, acetone, and at least 1% by weight residual cumene hydroperoxide, and a second step comprising passing the effluent into a second reactor and decomposing the residual cumene hydroperoxide, wherein during said process the ratio of phenol to acetone is maintained at a molar ratio of greater than 1:1, and wherein the water in each of the first and second steps is present in an amount more than 0 and less than or equal to 5 weight percent based on the total weight of the feed stream or effluent, and wherein the process is continuous.

Abstract: The goal of this invention is to produce phenol of high purity by conversion of impurities that are present in the starting phenol, which is produced by the decomposition of cumyl hydroperoxide. The indicated goal is achieved by purifying the phenol containing admixtures of aliphatic and aromatic carbonyl compounds with an aluminum zirconium catalyst.

Abstract: A method for measuring a concentration of a hydroperoxide of an alkylaromatic hydrocarbon in a process stream comprises immersing a probe into the process stream; wherein the probe is coupled to a spectrometer; collecting absorption data with the spectrometer at a wavelength of 13,000 cm?1 to 4,000 cm?1; and calculating a concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the process stream. In another embodiment, samples are withdrawn from the process stream and analyzed spectrometrically to determine the concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the sample.

Abstract: The specification provides a method of producing cumene hydroperoxide by continuous aqueous-emulsion oxidation at a high temperature and pressure in a cascade of reactors, wherein the process is conducted in the presence of a mixture of an aqueous solution of an ammonium salt with a concentration of 0.001-0.5 mass % and an aqueous solution of ammonia with a concentration of 0.001-0.5 mass %, which mixture is fed into each oxidation reactor in an ammonia:ammonium salt mass ratio of 1:100 to 100:1.

Abstract: The specification provides a method for producing p-cumylphenol phenol by reacting phenol with &agr;-methylstyrene in the presence of a highly efficient heterogeneous aluminum zirconium catalyst.

Abstract: The specification provides a method of producing cumene hydroperoxide by continuous aqueous-emulsion oxidation at a high temperature and pressure in a cascade of reactors, wherein the process is conducted in the presence of a mixture of an aqueous solution of an ammonium salt with a concentration of 0.001-0.5 mass % and an aqueous solution of ammonia with a concentration of 0.001-0.5 mass %, which mixture is fed into each oxidation reactor in an ammonia: ammonium salt mass ratio of 1:100 to 100:1.

Abstract: A method for measuring a concentration of a hydroperoxide of an alkylaromatic hydrocarbon in a process stream comprises immersing a probe into the process stream; wherein the probe is coupled to a spectrometer; collecting absorption data with the spectrometer at a wavelength of 13,000 cm−1 to 4,000 cm−1; and calculating a concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the process stream. In another embodiment, samples are withdrawn from the process stream and analyzed spectrometrically to determine the concentration of the hydroperoxide of the alkylaromatic hydrocarbon in the sample.

Abstract: A method for manufacturing cumene hydroperoxide comprises reacting cumene and oxygen in the presence of a water phase comprising aqueous ammonia, and in the absence of an additive comprising an alkali or alkaline earth metal, to form cumene hydroperoxide. A system for producing cumene hydroperoxide comprises a cumene feed in fluid communication with a reactor having a cumene hydroperoxide oxidate outlet; an oxygen feed in fluid communication with the reactor; and an ammonia feed in fluid communication with the cumene feed and/or the reactor, wherein the cumene feed, the oxygen feed, the ammonia feed, and the reactor are free of an additive comprising an alkali or alkaline earth metal.

Abstract: The goal of this invention is to produce phenol of high purity by conversion of impurities that are present in the starting phenol, which is produced by the decomposition of cumyl hydroperoxide. The indicated goal is achieved by purifying the phenol containing admixtures of aliphatic and aromatic carbonyl compounds with an aluminum zirconium catalyst.

Abstract: The specification provides a method for producing p-cumylphenol phenol by reacting phenol with &agr;-methylstyrene in the presence of a highly efficient heterogeneous aluminum zirconium catalyst.

Abstract: A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage product mixture and aqueous alkaline solution feeds in fluid communication with a neutralization drum having a aqueous salt phase outlet; a aqueous salt phase feed containing impurities in fluid communication with a decomposer reactor having an oxidized aqueous salt phase outlet; an oxidizing agent feed in fluid communication with the aqueous salt phase feed containing the impurities prior to the decomposer reactor; and an oxidized aqueous salt phase feed containing water-soluble oxidized derivatives of the impurities in fluid communication with the cumene hydroperoxide cleavage product mixture prior to the neutralization drum.

Abstract: A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage product mixture and aqueous alkaline solution feeds are in fluid communication with a neutralization drum having an aqueous salt phase outlet; an aqueous salt phase feed containing impurities in fluid communication with a heat treatment vessel having a heat-treated aqueous salt phase outlet; and a heat-treated aqueous salt phase feed containing water-soluble derivatives of the impurities in fluid communication with the cumene hydroperoxide cleavage product mixture prior to the neutralization drum.

Abstract: A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage product mixture and aqueous alkaline solution feeds in fluid communication with a neutralization drum having a aqueous salt phase outlet; a aqueous salt phase feed containing impurities in fluid communication with a decomposer reactor having an oxidized aqueous salt phase outlet; an oxidizing agent feed in fluid communication with the aqueous salt phase feed containing the impurities prior to the decomposer reactor; and an oxidized aqueous salt phase feed containing water-soluble oxidized derivatives of the impurities in fluid communication with the cumene hydroperoxide cleavage product mixture prior to the neutralization drum.

Abstract: A system for purifying a cumene hydroperoxide cleavage product mixture comprises a cumene hydroperoxide cleavage product mixture feed containing impurities in fluid communication with an aqueous alkaline solution feed; the cumene hydroperoxide cleavage product mixture and aqueous alkaline solution feeds are in fluid communication with a neutralization drum having an aqueous salt phase outlet; an aqueous salt phase feed containing impurities in fluid communication with a heat treatment vessel having a heat-treated aqueous salt phase outlet; and a heat-treated aqueous salt phase feed containing water-soluble derivatives of the impurities in fluid communication with the cumene hydroperoxide cleavage product mixture prior to the neutralization drum.

Abstract: A method for manufacturing cumene hydroperoxide comprises reacting cumene and oxygen in the presence of a water phase comprising aqueous ammonia, and in the absence of an additive comprising an alkali or alkaline earth metal, to form cumene hydroperoxide. A system for producing cumene hydroperoxide comprises a cumene feed in fluid communication with a reactor having a cumene hydroperoxide oxidate outlet; an oxygen feed in fluid communication with the reactor; and an ammonia feed in fluid communication with the cumene feed and/or the reactor, wherein the cumene feed, the oxygen feed, the ammonia feed, and the reactor are free of an additive comprising an alkali or alkaline earth metal.

Abstract: A method for manufacturing cumene hydroperoxide comprises reacting cumene and oxygen in the presence of a water phase comprising aqueous ammonia, and in the absence of an additive comprising an alkali or alkaline earth metal, to form cumene hydroperoxide. A system for producing cumene hydroperoxide comprises a cumene feed in fluid communication with a reactor having a cumene hydroperoxide oxidate outlet; an oxygen feed in fluid communication with the reactor; and an ammonia feed in fluid communication with the cumene feed and/or the reactor, wherein the cumene feed, the oxygen feed, the ammonia feed, and the reactor are free of an additive comprising an alkali or alkaline earth metal.

Abstract: This invention concerns the field of environmental protection and can be used to clean industrial waste gases containing products that cause resin formation which fouls catalysts. It is proposed to clean industrial waste gases of aromatic and aliphatic compounds at 120-160 ° C. by means of passing waste gases first through a catalytic composition consisting of a guard bed (to protect the palladium catalyst) with a specific surface 0.2-1.0 m2·g−1, which is initially roasted at 800-1,350° C. and second through a palladium catalyst bed (0.1-3% palladium, deposited on an active aluminum oxide). The proposed method makes it possible to clean industrial waste gases of harmful substances (for example, methanol, cumene) with a degree of destruction not less than 97-98% in the presence of aromatic hydroperoxides which cause resin formation and catalyst fouling on other catalytic systems.

Abstract: Injection of even very small amounts of supplemental water to the spent-air stream at points upstream from the heat exchanger cooler(s) used in processing spent-air streams from a cumene-to-phenol process allows these heat exchanger coolers to act as both extractors and condensers. It is therefore possible to recover from the heat exchanger cooler a methanol/water condensate, thereby substantially reducing the amount of methanol in the spent-air stream prior to discharge. Thus, known methods for manufacture of phenol from cumene in which an oxygen-containing gas stream is passed through liquid cumene to produce an oxidate product and a spent-air stream comprising methanol and cumene and a saturating amount of water; and in which the spent-air stream is passed through one or more heat exchanger coolers and a carbon bed prior to discharge can be improved.

Abstract: A process is described for purifying acetone from a crude acetone-phenol mixture produced upon oxidizing cumene. In the process, an alkaline agent and an oxidizing agent are both added to the mixture to help remove aldehyde contaminants upon purification.