Evaluation of Hydropyrolysis as an Energy-Saving Alternative to the Tomlinson Furnace. Task 1. More Efficient Char Utilization

摘要

Eight technologies for utilizing hydropyrolysis fuels were considered as having potential for increasing the production of electrical power over the base case technology. The technologies were: gas turbine, diesel engine, char gasification, fluidized bed combustion, cyclone burner, internal combustion engine, organic Rankine cycle, and Stirling engine. Design and cost data from vendors were used to incorporate into the paper mill steam/power system the more promising technologies for utilizing hydropyrolysis fuels. The resulting mill steam/power systems were compared on the bases of net purchased or exported power, net energy input to the overall system, capital cost, the return on the incremental investment over the base case system, the stage of development of the technology, the reliability of the technology, and the qualification of the vendor or vendors. The study indicated that the properties of char did not provide significant overall advantages over coal for topping cycles. The study also showed that the fuels utilization efficiency of hydropyrolysis can be increased further by raising the percentage of flash gas produced. (ERA citation 08:051545)