Hot Gas Filters for Coal-Based Power Generation Systems: Operating Experiences
A semi-industrial filtration facility is currently in operation at the ETSI-University of Seville,with financial support from the European Commission and the Spanish Ministry of the Environment.This pilot plant allows testing different elements and pulses cleaning strategies using real coal ash and under diverse operating conditions such as temperature and pressure.The aim of the on-going research is the evaluation of the alternatives for hot gas filtration technologies and the optimisation of the operation and performance of the filtering elements.The first experimental campaign carried out in the filtration facility commenced in 2005.Four types of elements were tested at maximum temperature and pressure of 235 oC and 7.5 barg respectively.Results were presented in the previous Symposium on Gas Cleaning at High Temperatures held in Australia in 2008.This paper describes the main results obtained during the second phase of the experimental campaign,in which the temperature has been increased up to 370 oC-600 oC.Three types of elements (one type of bag filter and two types of ceramic candles) have been tested.Principal parameters investigated for the characterisation of the filtering elements are the pressure drop across the element,the cleaning pulse interval,the baseline pressure drop,the filtration efficiency and the durability of the elements.Dependences on the particle loading and temperature among others have been also established.Additionally,an economic evaluation comparing all the alternatives has been carried out.Results are expected to be a very useful tool for the implementation of the filtration technologies at industrial scale
High temperature:bag filter:ceramic candles:filtration
M. Lupion B.Navarrete B.Alonso-Fari(n)as M. Rodriguez-Galan
ETS Ingenieros.Chemical and Environmental Engineering Department.University of Seville,Spain
国际会议
The 8th International Symposium on Gas Cleaning at High Temperatures(第八届国际高温气体净化技术研讨会 GCHT-8)
太原
英文
165-179
2010-08-23（万方平台首次上网日期，不代表论文的发表时间）