Scoping Studies to Evaluate the Benefits of an Advanced Dry Feed System on the Use of Low-Rank Coal

Demonstration of Pressurizing Coal/Biomass Mixtures Using Posimetric Solids Pump Technology

“…The baseline for this economic analysis, that of a dry solids handling and pressurization system for a 100% coal facility, was derived from 59 an analysis performed under a separate DOE contract 15 . The cost of incorporating biomass handling capability was added to this baseline, given the experimentallygenerated estimates of pump performance.…”

“…For example, pump drive torque was used to estimate the power required to operate the pump. Operating cost for the coal grinding, drying, atmospheric pressure conveyance, and Posimetric pump operation for 100% coal were extracted from the aforementioned 100% coal dry-feeding analysis 15 . As discussed in Section 4.5.1, the cost of biomass grinding and drying is included within the biomass feedstock costs.…”

“…The bulk of the handling equipment needed for a CBTL facility is identical to that needed for a coal gasification facility. Thus, the equipment costs for a 100% coal facility were extracted from the aforementioned low-rank coal dry-feeding analysis 15 . This included equipment for coal grinding, drying, atmospheric pressure conveyance, the Posimetric pump, and associated supporting equipment (e.g., blowers, pressure vessels, control systems).…”