Establishment of an Environmental Control Technology Laboratory with a Circulating Fluidized-Bed Combustion System

Wei-Ping Pan ; Yan Cao ; John Smith

关键词: BLOWERS;    CATALYSTS;    CIRCULATING SYSTEMS;    COAL;    COMBUSTION;    DUCTS;    FLUE GAS;    FLUIDIZATION;    FLUIDIZED BEDS;    FLUORIDES;    HALOGENS;    HYDROBROMIC ACID;    HYDROCHLORIC ACID;    HYDROGEN;    IODINE;    MERCURY;    NITROGEN OXIDES;    OXIDAT;   

DOI  :  10.2172/902975
RP-ID  :  None
PID  :  OSTI ID: 902975
Others  :  TRN: US200720%%334

美国|英语

来源: SciTech Connect

【 摘 要 】

This report is to present the progress made on the project entitled ''Establishment of an Environmental Control Technology Laboratory (ECTL) with a Circulating Fluidized-Bed Combustion (CFBC) System'' during the period January 1, 2007 through March 31, 2007. The effort in this quarter has concentrated on installing the CFBC Facility and for conducting cold fluidization operations tests in the CFBC facility. The assembly of the ash recirculation pipe duct from the cyclones back to the bed area of the combustor, including the upper and lower loop seals was completed. The electric bed pre-heater was installed to heat the fluidizing air as it enters the wind box. The induced draft fan along with its machine base and power supply was received and installed. The flue gas duct from secondary cyclone outlet to induced draft fan inlet was received and installed, as well as the induced fan flue gas discharge duct. Pressure testing from the forced draft fan to the outlet of the induced fan was completed. In related research a pilot-scale halogen addition test was conducted in the empty slipstream reactor (without (Selective Catalytic Reduction) SCR catalyst loading) and the SCR slipstream reactor with two commercial SCR catalysts. The greatest benefits of conducting slipstream tests can be flexible control and isolation of specific factors. This facility is currently used in full-scale utility and will be combined into 0.6MW CFBC in the future. This work attempts to first investigate performance of the SCR catalyst in the flue gas atmosphere when burning Powder River Basin (PRB), including the impact of PRB coal flue gas composition on the reduction of nitrogen oxides (NOx) and the oxidation of elemental mercury (Hg(0)) under SCR conditions. Secondly, the impacts of hydrogen halogens (Hydrogen fluoride (HF), Hydrogen chloride (HCl), Hydrogen Bromide (HBr) and Hydrogen Iodine (HI)) on Hg(0) oxidation and their mechanisms can be explored.