Cascaded coal drier for a coking plant

Details Cascaded coal drier for a coking plant Cascaded coal drier for a coking plant

1982-05-10

1984-02-07

Garris, Bradley

Distillation: apparatus

Apparatus

Types

34177, 165DIG27, 202270, C10B 3902, C10B 5710

Patent

active

044301618

ABSTRACT:
In a coking process, coal to be coked is preheated in a cascaded whirling bed drier into which the coal is charged from above and exposed to an indirect heat transfer while whirling in a coal-steam mixture. Hot gas applied to the heating pipes in respective cascades of the drier is branched off from the total amount of hot gases discharged from a dry cooler in which hot coke from the coke oven is cooled by recirculating cooler gas constituted by a partial gas stream discharged from the cascades of the drier and reunited with the other partial stream subject to a heat exchange for generating steam. Steam from the whirling beds is discharged from the cascaded drier, separated from the entrained dust particles, and then the excessive steam is drained in a branch conduit and the remaining steam is compressed and reintroduced into the lowermost whirling bed in the drier.

REFERENCES:
patent: 3031773 (1962-05-01), Dunkle
patent: 3043752 (1962-07-01), Foch
patent: 3090131 (1963-05-01), Waterman
patent: 3728230 (1973-04-01), Kemmetmueller
patent: 3800427 (1974-04-01), Kemmetmueller
patent: 3830293 (1974-08-01), Bell
patent: 3843458 (1974-10-01), Kemmetmueller
patent: 4080181 (1978-03-01), Feistal et al.
patent: 4240927 (1980-12-01), Karweil et al.
patent: 4246071 (1981-01-01), Wagener et al.
patent: 4292743 (1981-10-01), Razus
patent: 4308102 (1981-12-01), Wagener et al.
patent: 4354903 (1982-10-01), Weber et al.

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