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| Experimental study of dynamic filtration performance of natural gas fibrous filter |
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CHI Hua-chang1,JI Zhong-li1,WEI Rong-fang2
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(1. Faculty of Mechanical and Electronic Engineering in China University of Petroleum, Beijing 102249, China;2. China Petroleum Pipeline Natural Gas Compress Technology Limited Corporation, Dezhou 253020，Shandong Province, China)
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| Abstract: |
| An on-line natural gas filter element testing unit was built up，and an optical particle counter was used to simultaneously measure the upstream and downstream aerosol of the filter. The dynamic performance during fibrous filter clogging and the effect of various parameters on filtration performance were investigated using polydisperse ashes. The results show that the filtration efficiency increases with dust loading，which can be described in two stages，depth filtration and cake filtra-tion ,just being like pressure drop. The leakage of big particles should be responsible for the poor efficiency at high filtration velocity and the optimal face velocity ought to be smaller than 0. 06 m/s. Filtration efficiency can be improved by selecting thick filter media and increasing relative humidity，but the resistance will also increase. |
| Key words: fibrous filter natural gas filtration efficiency pressure drop optical particle counter |
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