Overall Plant Design Description (OPDD) coal derived liquid electric power plant

Abstract

The Case C power plant fueled with coal-derived liquid (CDL) fuel generates 443,500 kW of electrical power with an overall thermal efficiency of 48.66 percent based on higher heating value coal liquid to busbar. (The CDL manufacturing cycle is 67 percent efficient and when taken into account reduces the overall plant efficiency to 32.60 percent.) The power plant consists of six major systems organized for presentation as follows: the fuel system, the prime cycle system, the bottoming cycle system, the balance-of-plant system, the integrated plant control system, and the electrical power system. Each is described. The fuel system includes coal-derived liquid fuel storage and equipment to store, heat, clean and pump CDL. The prime cycle system includes: the high-temperature gas turbine prime movers, the hydrogen-cooled electrical generators, the axial turbine exhaust system which supplies heat to the steam generator, and associated off-base subsystems which support the gas turbine generators. The bottoming cycle includes: the heat recovery steam generator, the steam turbine prime mover, the electrical generator and the major auxiliary support subsystems, such as the condenser and boiler feed pumps. The balance-of-plant system includes: water supply and preparation equipment, heat rejection equipment including cooling towers and stacks, other mechanical and electrical support systems, and remaining plant services. The integrated plant control includes: a central control room which houses control of all plant functions, including coal-derived liquid supply, prime cycle and bottoming cycle operation to meet electrical load demand and operate within environmental standards. The electrical power system includes equipment provided for internal plant electrical power supply to the major plant systems and equipment required to connect gas and steam turbine generators to the output electrical power high line.