Apparatus with two-stage heating for carbonizing cold-compacted

Details Apparatus with two-stage heating for carbonizing cold-compacted Apparatus with two-stage heating for carbonizing cold-compacted

1984-02-16

1985-10-01

Kratz, Peter

Distillation: apparatus

Apparatus

Systems

202124, 202126, 202221, 202270, C10B 104, C10B 302

Patent

active

045444510

ABSTRACT:
Briquettes made from bituminous or sub-bituminous coal or peat are produced by grinding the coal, mixing it with a binder and compacting the mixture. They are then carbonized in a continuous process in a shaft oven. The coal may be predried and the finished briquettes may be preheated, with a subsequent drying and hardening. The carbonization is effected in two stages in an indirectly heated shaft oven, with the evolved gas being taken off about at the mid-height of the oven shaft, processed, and used for heating in the second, high-temperature stage. The flue gases from this high-temperature stage are used for heating in the first stage and for preheating. The second or high-temperature stage is followed by a cooling stage where the gases evolved in the second stage, and mainly comprising hydrogen are used and circulated. The evolved gas in excess is continuously removed from the cooling circuit.

REFERENCES:
patent: 3316155 (1967-04-01), Holowaty et al.
patent: 4050990 (1977-09-01), Lorenz
patent: 4097245 (1978-06-01), Holowaty
patent: 4134794 (1979-01-01), Lorenz et al.
patent: 4248670 (1981-02-01), Lorenz et al.
patent: 4259157 (1981-03-01), Lorenz et al.
patent: 4260458 (1981-04-01), Weber et al.
patent: 4342622 (1982-08-01), Holowaty
patent: 4385962 (1983-05-01), Stewen et al.

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