Back mixing device for pneumatic conveying systems
AssigneeGeneral Electric Company
InventorThomas Frederick Leininger
Life of this patent
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Abstract
The present application provides a back mixing device for use with a pneumatically conveyed flow of solids having a varying flow rate. The back mixing device may include a nozzle, a chamber in communication with the nozzle, and an exit. The chamber may include an expanded area leading to a restriction such that the chamber creates a recirculation pattern in the flow of solids so as to smooth the varying flow rate though the back mixing device.
Claims11
A pneumatic conveying system for use with a gasification system, comprising:
- a source of coal;
- a solids feeder positioned downstream of the source of coal;
- a back mixing device positioned downstream of the solids feeder;
- and
- a gasifier.
The pneumatic conveying system of claim 10, wherein the solids feeder comprises a rotary, converging channel solids pressurizing and metering device.
The pneumatic conveying system of claim 10, further comprising a high pressure feed vessel positioned downstream of the solids feeder.
The pneumatic conveying system of claim 12, wherein the high pressure feed vessel comprises a flow of a conveying gas, a flow of a pressure controlling gas, and a flow of a fluidizing gas.
The pneumatic conveying system of claim 10, further comprising a flow meter positioned between the solids feeder and the gasifier.
The pneumatic conveying system of claim 14, further comprising a controller in communication with the flow meter and the solids feeder.
The pneumatic conveying system of claim 14, wherein the back mixing device is positioned upstream of the flow meter.
The pneumatic conveying system of claim 14, wherein the back mixing device is positioned downstream of the flow meter.
The pneumatic conveying system of claim 10, further comprising a plurality of back mixing devices.
The pneumatic conveying system of claim 10, wherein the back mixing device comprises a chamber with an expanded area leading to a restriction.
The pneumatic conveying system of claim 19, wherein the back mixing device comprises a plurality of chambers.
Dependencies are inferred from the claim text.