Cumene-, Xylene- and Toluene sulphonates
At least part of the resultant cumene is then oxidized in the presence of an oxidizing gas to produce an oxidation effluent comprising cumene hydroperoxide, unreacted cumene and a spent oxidizing gas.
Cumene-, xylene- and toluene sulphonates
It concerns a process for the preparation of cumene hydroperoxide, continuously, by oxidation of cumene in liquid phase, in the presence of oxygen.
The present invention provides for the use of water, rather than cumene, as a more environmentally acceptable diluent for purified cumene hydroperoxide (CHP) solutions.
The process can be used in the industrial manufacture of cumene.
The cumene hydroperoxide thus obtained, characterized by the fact of being free of inorganic cations, is a further object of the invention.
Also disclosed is a nonacidic catalyst for reduction of cumene hydroperoxide.
The cumene hydroperoxide thus obtained, characterized by the fact of being free of inorganic cations, is a further object of the invention.
A process for decomposing a cumene oxidation product mixture containing cumene hydroperoxide (CHP) and dimethylphenolcarbinol (DMPC) (1) to produce phenol and acetone (26).
In the cumene process, benzene is alkylated with propylene and the resulting cumene (isopropylbenzene) is oxidized by air to give phenol and acetone:
One exemplary embodiment can be a method for processing polyisopropylbenzene for producing cumene.
The catalyst can also be used to produce cumene via an integrated process in which benzene is alkylated with propylene and transalkylated with diisopropylbenzene.
The contacting step disproportionates at least part of the cumene in the feed to provide a disproportionation effluent containing benzene and a mixture of diisopropylbenzene isomers.
In a transalkylation zone (4), a polyisopropylbenzene recycle stream (32) and a second benzene recycle stream (20) are reacted to form additional cumene (12).
TA 1537, TA 97 and TA 97a
Products from the decomposition of cuniene hydroperoxide (CHP) are recovered by distillation.
According to the invention, the oxidation products are concentrated up to a cumul content ranging from 21 to 30 wt.% in the technical cumul hydroperoxide, said mixture being used for the catalytic cleavage.
The present invention relates to an improved method for producing phenol and acetone by oxidizing cumol into technical cumol hydroperoxide (CHP) through catalytic cleavage of the CHP.
The method can include oxidizing and cleaving cumene to produce a crude acetone product.
The method is useful for synthesizing tert-amylbenzene by alkylating cumene with ethylene.
Total organic peroxides, expressed as cumene hydroperoxide
According to the present invention, through a hydrogenation process for cumene hydroperoxide obtained by oxidizing cumene in a phenol preparing process, selectivity may be improved and the amount of cumyl alcohol may be increased.
The resulting cumene stream is particularly suitable for use in a dry oxidation process.
A cumene product stream (32) is removed from an intermediate point of the dividing wall fractionation column.
The process is particularly well suited for the alkylation of benzene with propylene to produce cumene.
Use distillation to recover cumene, α-methylstyrene phenol, etc.
The technology for the plant will be provided through an agreement with Badger Licensing LLC(3).
Finally, sodium cumene sulphonate is added at zero point five per cent.
It is a co-product formed in a variation of the cumene process.
Requêtes fréquentes français :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
Requêtes fréquentes anglais :1-200, -1k, -2k, -3k, -4k, -5k, -7k, -10k, -20k, -40k, -100k, -200k, -500k, -1000k,
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