增压条件下石灰石固硫机理实验研究

Experimental Study of Limestone-based Desulfurization Mechanism under a Supercharged Pressure

增压燃烧条件下石灰石固硫特性研究是PFBC洁净燃烧的重点课题之一。在较高CO2 分压条件下 ,石灰石不易发生煅烧分解 ,从而导致增压条件下石灰石固硫机理不同于常压燃烧条件下的固硫机理。本文在增压实验台上对增压条件下石灰石固硫特性进行了实验研究 ,并采用JXA - 80扫描电镜对试样进行了微观检测分析 ,确定了固硫的媒质。

The use of a pressurized fluidized bed combined cycle (PFBC-CC) plant for power generation can be conducive to enhancing power generation efficiency and solving issues of environmental pollution. This technology has currently reached the stage of industrial pilot test and specific applicatious. The research of limestone-based desulfurization characteristics at supercharge-pressure combustion conditions has been listed as one of the kev research themes of PFBC clean combustion. Under a relative]y high CO2 partial pressure the limestone is not liable to calcination decomposition, thus making the mechanism of limestone-based desulfurization al a supercharged pressure different from that at a normal pressure combustion condition. With the help of a pressurized test rig the author has conducted an experimental study of the limestonebased desulfurization characteristics. Furthermore, a JXA-80 electronic scanning microscope was employed to conduct a microscopic detection analysis along with the determination ot desulfurization media.