Pulverizer air flow and temperature control

Details Pulverizer air flow and temperature control Pulverizer air flow and temperature control

1978-06-28

1979-12-11

Spicer, Jr., Robert L.

Solid material comminution or disintegration

Apparatus

With automatic control

241 65, 241 17, 241 23, B02C 2500

Patent

active

041779517

ABSTRACT:
The flow of preheated and ambient air to a processor, such as a coal pulverizer, are controlled in a manner whereby the preheated air flow will be varied as a function of pulverizer discharge temperature air while "cold" ambient air flow will be varied as a function of pulverizer inlet air mass flow rate. Flow error signals are caused to vary as a function of temperature error to enhance system response to temperature errors, and flow error will be caused to take precedence over temperature error should pulverizer inlet flow fall below a predetermined minimum.

REFERENCES:
patent: 2335853 (1943-12-01), Frisch
patent: 2427903 (1947-09-01), Crites
patent: 2428422 (1947-10-01), Harvey
patent: 2831637 (1958-04-01), Mittendorf
patent: 2998200 (1961-08-01), Litwinoff
patent: 3043525 (1962-07-01), Gilbert
patent: 3078048 (1963-02-01), Russell et al.
patent: 3273520 (1966-09-01), Hottenstine

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