Design Analysis For Igcc Power Station System And Its Thermodynamic System Study

Integrated Gasification Combined Cycle (IGCC) power generation is the most conspicuous clean coal power generation technology in the world today. It possesses huge development potential and represents the 21st century power technology development direction. IGCC power generation system combines the environmental friendly coal gasification technology with the high-efficiency Gas-team combined-cycle power generation technology. It implements the coal efficiently clean exploitation and has many advantages, such as high efficiency, cleanness, water saving, fuel adaptability, easiness to realize multi-production and so on. It can also be compatible with the sustainable development target—such as zero net carbon dioxide emission and hydrogen energy—in the future.The power resource structure based on burning coal in China's Power Industry will not change in a fairly long period of time. With the development of economy and rise of environmental protection requirement, developing circular economy, building a conservation-conscious society, implementing resource and environment coordinates development has been a basic national policy for China's economic construction. Therefore, constructing an advanced, efficient IGCC clean coal power generation project which owns superior environmental protection index is a significant development direction of the 21st century clean coal power generation technology. Consequently, it's necessary to dwell on the design techniques of all the process systems in IGCC power stations. The following is the summary content of this paper:Chapter 1 introduces IGCC as a kind of clean coal power generation technologies. The process is:the coal generates synthesis gas through the pure oxygen's imperfect combustion in the gasification furnace. Then, after the purifying treatment of desulfurization and dedusting, the synthesis gas enters the gas turbine set for the combustion to generate electricity. The high-temperature exhaust gas from the gas turbine set changes feed water into water vapor via heat exchanger in the exhaust-heat boiler. And the water vapor drives steam turbines and generates electricity.Chapter 2 introduces three major gasification furnace types to choose from in IGCC power stations:fixed bed gasifier, fluidized bed gasifier and fluid injected bed gasifier. Fluid injected bed gasifier has the most widely application in IGCC power generation system. The chapter also introduces how to select the gasification furnaces.Chapter 3 analyses the purification of the synthesis gas is to satisfy the intake's quality of the gas turbine set, the limit of the environmental standards for atmosphere emission and the demand for chemical products. The paper introduces some chemical comprehensive utilization technologies such as purifying technology and sulfur recovery technology.Chapter 4 introduces the thermodynamic system in the IGCC power stations, propellant feed system, chemical water treatment system, electrical system, instrumentation and control system, Heating Ventilation and Air-condition system, water supply and drainage system, fire fighting system, buildings and structures, master plan and so on of the general arrangement plans are described in this paper.Chapter 5 analyses the thermal system of IGCC from the energy efficiency, power generation, and pollutant control point of view.It can be used to conduct the design and installation work of the engineering project.