High pressure dry coal slurry extrusion pump

A system for pressurizing a raw fuel used in a pressure reactor, comprising:

• a vessel operable to receive the raw fuel;
• an extruder pump fluidly coupled to the vessel, the extruder pump including a housing having an inlet for receiving the raw fuel from the vessel, an outlet for discharging pressurized raw fuel, and a plurality of motive rollers mounted for rotation within the housing, the plurality of motive rollers including a first row of motive rollers located on one side of the extruder pump and second row of motive rollers on another side of the extruder pump spaced apart from the first row of motive rollers for successively pressurizing the raw fuel from the vessel, and the plurality of motive rollers turn at different tip speeds such that the motive rollers near the inlet have tip speeds higher than those near the outlet;
• and
• a discharge tank fluidly coupled to the extruder pump for receiving pressurized raw fuel from the extruder pump.

A system for providing pressurized raw fuel to a pressure reactor, comprising:

• a vessel having an inlet operable to receive the raw fuel and an outlet for discharging pressurized raw fuel;
• a roller system within the vessel, the roller system operable to pressurize the raw fuel, the roller system including:
• a first motive roller adjacent to the inlet, the first motive roller operable to pressurize the raw fuel to a first pressure fuel;
• a second motive roller adjacent to the inlet and displaced a first distance across from the first motive roller, the second motive roller receiving the raw fuel of the first pressure level and further pressurizing the raw fuel to a second pressure level before directing the raw fuel toward the reactor;
• and
• a plurality of seals, with at least one of the plurality of seals arranged between the first motive roller and the vessel and another of the plurality of seals arranged between the second motive roller and the vessel to limit leakage from the vessel.

A system for providing pressurized raw fuel to a pressure reactor, comprising:

• a vessel having an inlet operable to receive the raw fuel and an outlet for discharging pressurized raw fuel;
• a roller system within the vessel, the roller system operable to pressurize the raw fuel, the roller system including:
• a first motive roller adjacent to the inlet, the first motive roller operable to pressurize the raw fuel to a first pressure fuel;
• a second motive roller adjacent to the inlet and displaced a first distance across from the first motive roller, the second motive roller receiving the raw fuel of the first pressure level and further pressurizing the raw fuel to a second pressure level before directing the raw fuel toward the reactor, the first motive roller and the second motive roller turn at different tip speeds such that the first motive roller near the inlet has tip speeds higher than the second motive roller near the outlet.

A system for pressurizing a raw fuel, comprising:

• a vessel operable to receive the raw fuel;
• an extruder pump fluidly coupled to the vessel, the extruder pump operable to pressurize the raw fuel, the extruder pump further including:
• a housing symmetric to a vertical plane comprising an inlet for receipt of the raw fuel from the vessel and an outlet fluidly coupled to the discharge tank to provide the discharge tank with the pressurized raw fuel;
• a plurality of motive rollers disposed within the housing, the plurality of motive rollers arranged in the housing to form an angle to the vertical plane;
• a plurality of seals between the plurality of motive rollers and the housing, the plurality of seals being configured to limit leakage from the housing;
• a discharge tank fluidly coupled to the extruder pump and operable to receive the pressurized fluid from the extruder pump;
• and
• a gasifier coupled to the discharge tank, the gasifier operable to combust the pressurized raw fuel.