Abstract:
A partial oxidation burner and process for the manufacture of synthesis gas, reducing gas and other gas mixtures substantially comprising H2 and CO. A hydrocarbon, oxygen-rich gas and, optionally, H2O or some other temperature moderator are introduced into the reaction zone of a synthesis gas generator in which, by partial oxidation at an autogenous temperature in the range of about 1700* to 3500*F. and a pressure in the range of about 1 to 250 atmospheres, said synthesis, fuel, or reducing gas is produced. For example, a hydrocarbon is introduced into the reaction zone by way of the inner assembly of a novel multitube burner, and a mixture of oxygen-rich gas and steam is passed through a coaxial conduit disposed about the outside of said inner assembly. Said inner asembly comprises a central conduit of circular cross-section, having a plurality of parallel open-ended tubes extending downstream from the exit end of said central conduit and in communication therewith. The tubes terminate in a surrounding nozzle, which is the exit end of the coazial outer conduit.
Abstract:
This disclosure pertains to a triple-orifice burner and process for atomizing a stream of normally liquid hydrocarbon with a separate stream of free-oxygen-containing gas a finite distance downstream from the tip of the burner and for simultaneously enveloping the mixed streams with a separate stream of temperature-moderating gas so that none of the three streams comes into contact with any other gas with which it is combustible until it reaches a distance downstream from the tips of the burner orifices beyond that close enough to cause appreciable deterioration of the tips when reaction takes place in a free-flow partial oxidation gas generator at a temperature in the range of about 1,200* to 3500*F. and at a pressure in the range of about 1 to 275 atmospheres to produce a gaseous mixture comprising principally H2 and CO, e.g., synthesis gas, reducing gas, or fuel gas. While the liquid hydrocarbon is passed through the burner at a velocity in the range of about 10 to 100 feet per second, both the stream of free-oxygen-containing gas and the stream of temperature-moderating gas may be passed through the burner at velocities up to sonic velocity when it is desired to offset the effects of variable back pressure in the gas generator. The burner comprises three coaxial concentric nozzles whose tips are recessed from the downstream tip of the burner and which discharge into a single unobstructed coaxial central outwardlydiverging passage with an annular face of convex configuration at the extremity of the downstream tip of the burner. An imaginary plane tangent to said annular face at its outermost extremity is normal to the burner axis. The three nozzles provide, respectively, a central passage with a circular opening for discharging a stream of liquid hydrocarbon, an intermediate converging annular passage for discharging a stream of freeoxygen-containing gas, and an outer converging annular passage for discharging a stream of temperature-moderating gas, such as steam. An annular coolant chamber is disposed about the outside periphery of said outer discharge passage and downstream burner tip.
Abstract:
MANUFACTURE OF SYNTHEIS GAS BY PARTIAL OXIDATION OF A NORMALLY LIQUID HYDROCARBON BY FEEDING INTO THE REACTION ZONE A RELATIVELY LOW VELOCITY STREAM OF LIQUID HYDROCARBON AND A STREAM OF OXYGEN-CONTAINING GAS THRU SEPARATE CENTRAL NOZZLES OF A TRIPLE ORIFICE BURNER IN SUCH A MANNER AS TO EFECT ATOMIZATION OF THE OIL DOWNSTREAM OF THE BURNER, THESE STREAMS BEING ENCLOSED IN A THIRD, OUTER ANNULAR STREAM OF MODERATOR GAS, SUCH AS STEAM, SO THAT NONE OF THE THREE STREAMS COMES INTO CONTACT WITH ANY OTHER GAS WITH WHICH IT IS COMBUSTIBLE UNTIL IT REACHES A DISTANCE DOWNSTREAM FROM THE BURNER TIPS BEYOND THAT CLOSE ENOUGH TO CAUSE APPRECIABLE DETERIORATION.
Abstract:
SYNTHESIS GAS, I.E., A MIXTURE OF CARBON MONOXIDE AND HYDROGEN IS PRODUCED BY DIRECT PARTIAL OXIDATION OF A HYDROCARBON FUEL WITH OXYGEN FOLLOWED BY NON-CATALYTIC REACTION WITH STEAM AT A TEMPERATURE OF AT LEAST 1500* F. AND PREFERABLY IN THE RANGE OF ABOUT 1700 TO 2800* F. IN ONE OR MORE REACTION ZONES.
Abstract:
Oxo-synthesis gas, i.e. a mixture of carbon monoxide and hydrogen containing substantially equal volumes of hydrogen and carbon monoxide is produced by direct partial oxidation of a hydrocarbon fuel with oxygen followed by noncatalytic reaction with carbon dioxide at a temperature of at least 1,500*F., and preferably in the range of about 1,700* to 2,800*F. in one or more reaction zones.