SYSTEM HAVING A PISTON FEEDSTOCK FEEDER SYSTEM FOR USE IN HYDROPROCESSING A SOLID FEEDSTOCK

Abstract

A system for hydroprocessing of a solid feedstock includes a hydropyrolysis reactor having one or more inlets that may receive the solid feedstock and to generate a product stream having partially deoxygenated hydropyrolysis product, H2O, H2, CO2, CO, C1-C3 gases, char, and fines. The hydropyrolysis reactor includes one or more deoxygenation catalysts. The system also includes a solid feedstock feeding system disposed upstream from and fluidly coupled to the hydropyrolysis reactor. The solid feedstock feeding system includes a piston feeder having an inlet, an outlet, at least one piston disposed between the inlet and the outlet, the at least one piston includes a chamber and a barrel disposed in and that may translocate within the chamber, the barrel includes a terminal end having a seal, and the seal includes an annular ring having a first wall and a second wall, the second wall is orthogonal to and extends from the first wall such that a first portion of the first wall protrudes away from the second wall in a first direction and a second portion of the first wall protrudes away from the second wall in a second direction that is substantially opposite from the first direction.

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