Method and devices for producing naphthalene from coke...

Details Method and devices for producing naphthalene from coke... Method and devices for producing naphthalene from coke...

2007-02-13

2007-02-13

Caldarola, Gienn (Department: 1764)

Chemistry of hydrocarbon compounds

Purification, separation, or recovery

C585S833000, C201S029000, C201S030000, C202S091000, C208S033000, C095S189000, C095S205000, C055S423000, C055S423000, C055S423000, C055S423000, C055S423000

Reexamination Certificate

active

10398501

ABSTRACT:
A method and apparatus are disclosed for recovering pure naphthalene from hot crude coke oven gas. The hot crude coke oven gas is directly cooled by means of sprinkling water directly thereon, and the naphthalene is recovered by subsequent filtering out of tar and other impurities, followed by cooling to obtain crystalline pure naphthalene. More specifically, after direct cooling of the hot crude coke oven gas, the gas is then guided through an electrofilter to be subsequently cooled in such a manner that the naphthalene contained in the crude coke oven gas is separated from the gaseous phase and is obtained in the form of pure naphthalene crystals without any required additional treatment.

REFERENCES:
patent: 2956639 (1960-10-01), Stirling et al.
patent: 4234389 (1980-11-01), Lynn et al.
patent: 4286971 (1981-09-01), Burcaw et al.
patent: 4441987 (1984-04-01), Broadhurst
patent: 4012146 (1991-10-01), None

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