CCS and Power Systems

Advanced Energy Systems - Gasification Systems


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


Performer: General Electric

Project No: FE0007902


Accomplishments


The slurry feed Base Case study (Base Case) was completed. The Base Case plant configuration includes a conventional GE coal grinding and slurry preparation unit that feeds an aqueous slurry of Montana Rosebud Powder River Basin Coal to a single 1800 cubic foot (ft3 ) GE quench gasifier. GE in-house models of the gasifier, the gasification island, and the power island were used for simulating the Base Case plant.

The following items were completed or developed:

  • Overall plant process flow diagram.
  • Simulation of the gasifier, gasification island, and power block.
  • Equipment list, size, and capital cost for all key equipment and total plant cost.
  • Reliability, availability, maintainability analysis for the entire plant.
  • Operating and maintenance costs.
  • Cost of electricity and levelized cost of electricity (LCOE).

The slurry feed Base Case study (Base Case) was completed. The Base Case plant configuration includes a conventional GE coal grinding and slurry preparation unit that feeds an aqueous slurry of Montana Rosebud Powder River Basin Coal to a single 1800 cubic foot (ft3 ) GE quench gasifier. GE in-house models of the gasifier, the gasification island, and the power island were used for simulating the Base Case plant.

Heat and material balances, together with the down selected configuration for the Posimetric Feed System, were used to calculate auxiliary power consumption and overall plant efficiency for the Advanced Technology IGCC Case. On the basis of these results, a number of improvements were identified that will significantly increase overall plant efficiency. An optimization effort was initiated and is currently ongoing to integrate these improvements in the IGCC plant design.


Project Details