Injector and method for co-feeding solid and liquid fuels
AssigneeGeneral Electric Company
InventorsXiangqi Wang, Wei Chen, Ke Liu, Lishun Hu, Zhe Cui, Xianglong Zhao
Life of this patent
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Abstract
An injector for co-feeding liquid and solid fuels into a gasifier is provided. The injector includes a body, a first member, and a second member. The body comprises a first channel for conveying a liquid fuel. The first member surrounds the body to define a second channel for pneumatically conveying a solid fuel. The second member surrounds the first member to define a third channel for conveying a fluid stream for dispersing the solid fuel. The liquid fuel is atomized before being mixed with the solid fuel. A method for co-feeding liquid and solid fuels is also presented.
Claims21
A feeding method for a gasifier, comprising:
- conveying a liquid fuel through a first channel wherein the liquid fuel is a recycled fines slurry, a combined coal slurry and recycled fines slurry or combinations of the recycled fines slurry or the combined coal slurry and recycled fines slurry with additives for adjusting fusion point;
- conveying a solid fuel through a second channel surrounding the first channel, the second channel including a first discharge end with a mixing section wherein the solid fuel is pulverized coal, pulverized biomass, petroleum coke, oil shale, oil sand, municipal waste or any combinations thereof;
- conveying a fluid stream though a third channel surrounding the second channel;
- atomizing the liquid fuel into an atomized liquid fuel before being mixed with the solid fuel;
- mixing the solid fuel with the atomized liquid fuel to form a hybrid fuel in the mixing section of the first discharge end before gasification thereof;
- and
- dispersing the hybrid fuel using the fluid stream after the hybrid fuel exits the first discharge end.
An injector for a gasifier, comprising:
- a body comprising a first channel for conveying a recycled fines slurry;
- a first member substantially concentric with the body to define a second channel for pneumatically conveying a solid fuel, the first member including a first discharge end with a mixing section;
- and
- a second member substantially concentric with the first member to define a third channel for conveying a fluid stream,
- wherein the solid fuel is pulverized coal, pulverized biomass, petroleum coke, oil shale, oil sand, municipal waste or any combinations thereof;
- the recycled fines slurry is atomized before being mixed with the solid fuel;
- the solid fuel is mixed with the atomized recycled fines slurry in the mixing section of the first discharge end to form a hybrid fuel before gasification thereof;
- and the hybrid fuel is dispersed by the fluid stream after exiting the first discharge end.
An injector for a gasifier, comprising:
- a body comprising a first channel for conveying a liquid fuel;
- a first member surrounding the body to define a second channel for pneumatically conveying a solid fuel, the first member including a first discharge end with a mixing section;
- and
- a second member surrounding the first member to define a third channel for conveying a fluid stream,
- wherein the liquid fuel is a recycled fines slurry, a combined coal slurry and recycled fines slurry or combinations of the recycled fines slurry or the combined coal slurry and recycled fines slurry with additives for adjusting fusion point;
- the solid fuel is pulverized coal, pulverized biomass, petroleum coke, oil shale, oil sand, municipal waste or any combinations thereof;
- the liquid fuel is atomized before being mixed with the solid fuel;
- the solid fuel is mixed with the atomized liquid fuel in the mixing section of the first discharge end to form a hybrid fuel suitable for gasification thereof;
- and
- the hybrid fuel is dispersed by the fluid stream after exiting the first discharge end.
Dependencies are inferred from the claim text.