Patent ID: 9199185
Filing Date: 2015-12-01
Classification: B01D

Abstract:
1. A coalescer comprising: coalescing media for coalescing a mixture of two phases, namely a continuous phase comprising hydrocarbon liquid and a dispersed phase comprising water, the mixture flowing through the media from upstream to downstream, the media comprising a layer of media material for filtering the mixture, the media material having a mean pore size, M, wherein the dispersed phase comprises water droplets having an average particle size that is greater than the mean pore size, the media material being relatively non-wettable with respect to the dispersed phase, wherein 0.2 μm≦M≦12.0 μm and the media material has a maximum pore size M an additional layer of media material adjacent to the upstream face of the media material, the adjacent layers extending in series from upstream to downstream, namely an upstream first layer of media material and a downstream second layer of media material, the first layer of media material being relatively wettable by the dispersed phase in the continuous phase, and the first layer and the second layer having mean pore sizes M wherein the coalescer is configured to filter the mixture as it flows from upstream to downstream in the coalescer.