Apparatus and method to control process to replace natural gas with fuel oil in a natural gas burner

Patent · Tue Feb 20 04:00:00 UTC 1979

OSTI ID:6212936

Hoehing, W W; Jackson, J M; Johnson, E R

A method whereby fuel oil is mixed with a gaseous diluent and partially vaporized, liquids separated out, superheated and burned in a natural gas burner without major modification to the burner is disclosed. The control system is: (1) a liquid level controller sensing the liquid level in the separator to automatically control the flow of the fuel oil to the vaporizer; (2) a ratio flow controller sensing the flow of the fuel oil and of the diluent to the vaporizer to automatically control the flow of the diluent to a set ratio of the flow of the fuel oil; (3) a pressure controller sensing the pressure at the vaporizer outlet and downstream overhead to automatically control the heat input to the vaporizer and optionally; (4) a flow control valve set to automatically control the flow of the separator overhead to the burner; and (5) a temperature controller sensing the temperature of the vapor effluent from the superheater to automatically control the heat input to the superheater. The vaporized fuel-diluent should be superheated to 50 to 300/sup 0/F, above the dew point of mixed vapor, preferably 100 to 275/sup 0/F above. The fuel-diluent mixture should be at a steady pressure value between about 5 and 80 psig. as feed to the burner. The preferred diluent is steam.

• Assignee: Allied Chemical Corp.
• Patent Number(s): US 4140473
• OSTI ID: 6212936
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200108 -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
BURNERS
CONTROL SYSTEMS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUEL OILS
FUEL SUBSTITUTION
FUELS
GAS BURNERS
GAS FUELS
GASES
MODIFICATIONS
NATURAL GAS
OILS
OPERATION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS