Plant for producing hydrogen peroxide

Details Plant for producing hydrogen peroxide Plant for producing hydrogen peroxide

1998-04-01

1999-06-29

Langel, Wayne

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Including solid, extended surface, fluid contact reaction...

B01J 3502

Patent

active

059165324

ABSTRACT:
A method using auto-oxidation of an anthraquinone derivative in three successive steps, comprising hydrogenating the working solution (at 1), oxidizing the hydrogenated working solution (at 2), and removing hydrogen peroxide using water (at 3). The hydrogenation step is performed in such a way that a hydrogen peroxide equivalent of around 7.9 g/l is achieved at the inlet of the oxidizer (2), and the oxidation step (b) is performed in such a way that the temperature at the top of the oxidizer (2) is below about 50.degree. C., and preferably around 35-40.degree. C. The method is useful for producing hydrogen peroxide in situ in a paper pulp bleaching plant.

REFERENCES:
patent: 3880596 (1975-04-01), Liebert et al.
patent: 3952089 (1976-04-01), Kabisch et al.
patent: 4485084 (1984-11-01), McIntyre
patent: 4526757 (1985-07-01), Gupta
patent: 4539196 (1985-09-01), Sethi et al.
patent: 4541997 (1985-09-01), Bengt
patent: 4606905 (1986-08-01), Thirion
R.H. Perry, D. Green, Perry's Chemical Engineers' Handbook, (1984) McGraw-Hill, New York, USA, p. 18-25 -p. 18-29.

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