Liquid heaters and vaporizers – Miscellaneous
Patent
1990-03-14
1991-09-03
Bennett, Henry A.
Liquid heaters and vaporizers
Miscellaneous
1224481, 110234, 110238, 236 14, F22B 3500, F23C 100, F23G 700
Patent
active
050443267
ABSTRACT:
Apparatus is provided for controlling the burning of a volatile waste liquid together with a conventional fuel in a boiler in the form of a free-standing module which contains a flow-control valve for the waste liquid. This system includes a means for monitoring the position to the fuel-control valve for the conventional fuel and a separate means for monitoring the position of a controlled valve for feeding of the volatile liquid. The two monitoring means are coupled and comparisons are made of the relative valve positions indicated thereby. The process controller used for such comparison contols a valve which stops the flow of volatile liquid to the burner in the event that more than a predetermined discrepancy occurs between the indicated valve positions. Said controller may also be employed to correct the valve position. Other features include a reverse purge pumping system which is actuated upon shutdown of volatile fuel flow. Additionally, the entire operating range of the control valve for the volatile liquid can be shifted so that volatile fuels of varying calorific values can be accomodated.
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patent: 3980417 (1976-09-01), Diercky
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Coerper Philip R.
Tynkov Boris M.
Aqua-Chem Inc.
Bennett Henry A.
Ericsen Arnold J.
Kilner Christopher B.
Sylke C. Thomas
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