Pumps – Condition responsive control of pump drive motor – With control of pump drive transmission
Patent
1979-11-07
1981-06-02
Croyle, Carlton R.
Pumps
Condition responsive control of pump drive motor
With control of pump drive transmission
417 26, 417 53, 417292, 417295, 417438, F04B 4900
Patent
active
042708842
ABSTRACT:
A waste gas recovery system employs a compressor which takes in raw waste gas from an inlet knock-out drum and passes compressed gas through a heat exchanger to an outlet knock-out drum. The temperature at the outlet of the compressor is sensed by a device which operates valves to inject liquid coolant into the compressor inlet and to re-circulate gas back from the outlet of the outlet knock-out drum to inhibit an excessive temperature rise. A pressure-sensing device senses the pressure of the gas passing into the compressor and controls both the speed of the compressor and an adjustable throttle valve to regulate the gas flow. The throttle valve is closed automatically should there be a fall in the pressure of the gas at the inlet below a safe level. In this event, further pressure-sensing devices act additionally to close the recirculating gas valve and a further valve in the main inlet flow path to reliably isolate the compressor.
REFERENCES:
patent: 1346898 (1920-07-01), Kingsbury
patent: 2042991 (1936-06-01), Harris
patent: 2645409 (1953-07-01), Lawler
patent: 2876865 (1959-03-01), Cobb
patent: 3091097 (1963-05-01), Friant
patent: 3180266 (1965-04-01), Smith
patent: 3785749 (1974-01-01), Perry et al.
patent: 3799702 (1974-03-01), Weishaar
patent: 3957395 (1976-05-01), Ensign
"Flare Gas Recovery System Saves Fuel," Processing Magazine, by Lintonbon, Feb. 1978.
Lintonbon Robert F.
Shore David
Croyle Carlton R.
Ferakarn Limited
Grover James H.
Look Edward
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