The desulfuration system in the second phase project of Sanhe Power Plant is the first such system that adopts in-duct FGD with no-bypass design by domestic power plants.Different from that of the conventional FGD wit...The desulfuration system in the second phase project of Sanhe Power Plant is the first such system that adopts in-duct FGD with no-bypass design by domestic power plants.Different from that of the conventional FGD with bypass design,a running control mode,which is important for the security of the absorbing tower within the designed ranges,shall be made to ensure the flue gas temperature and dust concentration at the inlet of the absorbing tower.The stable running of the system shows that the control mode is feasible.展开更多
In-duct ultraviolet germicidal irradiation(UVGI)systems effectively decontaminate airborne microorganisms that are present in duct air.In this study,the main objectives were to determine the effects of temperature,rel...In-duct ultraviolet germicidal irradiation(UVGI)systems effectively decontaminate airborne microorganisms that are present in duct air.In this study,the main objectives were to determine the effects of temperature,relative humidity(RH),air velocity,and measurement on the germicidal efficiency of in-duct UVGI and to analyze three germicidal kinetic models.Staphylococcus albus and Escherichia coli were selected as the test bacteria.The maximum UV disinfection efficacy was observed in the temperature range of 26-28℃and RH range of 30-40%.The germicidal efficiency of the in-duct UVGI was negatively corelated with air velocity.When the UV lamps were arranged either parallel or vertical to the airflow,there were no obvious differences in-duct UVGI germicidal efficiency.In addition,three mathematical prediction models(C-W model,C-S model,Hom model)were chosen to predict the efficacy of in-duct UVGI in specific applications.The C-S model was fitted to predict the efficacy of E.coli,and the Hom model was fitted to predict that of Staphylococcus albus.展开更多
文摘The desulfuration system in the second phase project of Sanhe Power Plant is the first such system that adopts in-duct FGD with no-bypass design by domestic power plants.Different from that of the conventional FGD with bypass design,a running control mode,which is important for the security of the absorbing tower within the designed ranges,shall be made to ensure the flue gas temperature and dust concentration at the inlet of the absorbing tower.The stable running of the system shows that the control mode is feasible.
基金funded by the special fund project for technology innovation of Tianjin,grant number 21YDTPJC00560。
文摘In-duct ultraviolet germicidal irradiation(UVGI)systems effectively decontaminate airborne microorganisms that are present in duct air.In this study,the main objectives were to determine the effects of temperature,relative humidity(RH),air velocity,and measurement on the germicidal efficiency of in-duct UVGI and to analyze three germicidal kinetic models.Staphylococcus albus and Escherichia coli were selected as the test bacteria.The maximum UV disinfection efficacy was observed in the temperature range of 26-28℃and RH range of 30-40%.The germicidal efficiency of the in-duct UVGI was negatively corelated with air velocity.When the UV lamps were arranged either parallel or vertical to the airflow,there were no obvious differences in-duct UVGI germicidal efficiency.In addition,three mathematical prediction models(C-W model,C-S model,Hom model)were chosen to predict the efficacy of in-duct UVGI in specific applications.The C-S model was fitted to predict the efficacy of E.coli,and the Hom model was fitted to predict that of Staphylococcus albus.
