| 摘要 |
<p>A continuous process for producing carburetted fuel gas comprises adding a distillate hydrocarbon oil and an oxidant comprising air or oxygen or both to a stream of hot, lean combustible gas, passing the mixture through a reaction zone, controlling the addition of the oxidant to maintain a temperature in the zone of 550 DEG to 1000 DEG C., and controlling the addition of the oil to yield a carburetted fuel gas of predetermined calorific value. The oil is preferably a light distillate having a final boiling point below 200 DEG C., and it is preferably preheated to be partially or completely vaporized before mixing with the gas. The oxidant may be added to the gas separately from the oil or mixed therewith. Valves in an oxidant supply line and in an oil supply line may automatically controlled respectively by a pyrometer in the zone and by a calorimeter in contact with the cold carburetted gas. Non-automatic control may be used, pyrometers and calorimeter being indicating instruments only. Residence time in the zone may be 2 to 10 seconds, and the lean gas may be one at 700 DEG to 800 DEG C. produced by catalytic reforming with steam, or may be one at 450 DEG to 500 DEG C. leaving a catalytic carbon monoxide converter. The pressure in the zone may be atmospheric or above, e.g. 10 p.s.i.g. Two examples are given, including oil characteristics, lean gas composition, air and oil flow rates, carburetted gas composition and calorific value. Specification 843,459 is referred to.</p> |
