Gasifier injector
View Patent ↗A method for gasifying a carbonaceous material includes supplying a main slurry flow to a main cavity of a two-stage slurry splitter, dividing the main slurry flow into secondary slurry flows that flow into secondary cavities extending from the main cavity at distal ends of first stage flow dividers, dividing each secondary slurry flow into tertiary slurry flows that flow into slurry injection tubes extending from each secondary cavity at distal ends or second stage flow dividers, injecting the tertiary slurry flows into a gasification chamber coupled to the injector module, impinging annular shaped sprays of a reactant onto corresponding ones of the tertiary slurry flows within the gasification chamber using annular impinging orifices in a face plate of the injector module, and cooling the face plate to withstand high temperatures and abrasion.
1. A method for gasifying a carbonaceous material, said method comprising:
supplying a main slurry flow to a main cavity of a two-stage slurry splitter of an injection module;
dividing the main slurry flow into a plurality of secondary slurry flows that flow into a plurality of secondary cavities extending from the main cavity at distal ends of a plurality of first stage flow dividers;
dividing each secondary slurry flow into a plurality of tertiary slurry flows that flow into a plurality of slurry injection tubes extending from each secondary cavity at distal ends or a plurality of second stage flow dividers;
injecting the tertiary slurry flows into a gasification chamber coupled to the injector module, via the slurry injection tubes;
impinging each of a plurality of annular shaped sprays of a reactant onto a corresponding one of the tertiary slurry flows within the gasification chamber, via a plurality of annular impinging orifices incorporated in a face plate of the injector module, wherein each impinging orifice surrounds a corresponding slurry injection tube; and
cooling the face plate so that the face plate will withstand high temperatures and abrasion caused by a gasification reactant generated by impinging the reactant onto the tertiary slurry flows.
2. The method of claim 1 , wherein cooling the injector module face plate comprises:
fabricating the face plate of a porous metal; and
transpiring the reactant through the porous metal face plate.
3. The method of claim 2 , wherein impinging each annular shaped spray of reactant comprises:
forming the annular impinging orifices within the porous metal face plate; and
forcing the reactant through each annular impinging orifice.
4. The method of claim 1 , wherein cooling the injector face plate comprises:
constructing the face plate to include a reactant-side plate, a gasifier-side plate and a coolant passage therebetween; and
passing a coolant through the coolant passage to cool the gasifier-side plate.
5. The method of claim 4 , wherein impinging each annular shaped spray of reactant comprises:
fitting a plurality if impinging conic elements within the injector module face plate such that each impinging conic element extends through the reactant-side plate, the cooling passage and the gasifier-side plate, wherein each conic element includes one of the annular impinging orifices; and
forcing the reactant through each annular impinging orifice.