PATENT CLAIM ANALYSIS

Application Number: 15742214
Application Type: Utility
Filing Date: 2018-01
Publication Date: 2018-07
Patent Classification: ["210", "248000"]

Abstract:
The invention relates to a separation system for simultaneous removal of a solid phase particles and a dispersed phase droplets from a medium being a continuous phase to be purified by filtration, wherein said separation system comprises: a filtration-coalescing element ( 1 ) in a form of a fibrous structure, a separating element ( 2 ), which is a barrier layer for droplets of said dispersed phase and a drainage gap ( 3 ), disposed there between and separating said elements ( 1 ) and ( 2 ) from each other. Said filtration-coalescing element ( 1 ) is a non-woven fibrous structure in the form of a depth non-woven structure composed of fibers packed in a form of a cartridge and it comprises: a filtration layer ( 1 a ) being an initial depth filtration layer comprising polymer fibres of nanometric sizes, wherein said fibres composing the layer ( 1 a ) have extensively phobic surface properties and having across its thickness a porosity gradient, a coalescing layer ( 1 b ) and adjacently following it a dripping layer ( 1 c ), both composed of polymer fibres and jointly forming a coalescing structure ( 1 b, c ) packaged in the form of a depth gradient structure of fibres, and wherein a porosity gradient across the entire coalescing structure ( 1 b, c ) changes in the opposed direction with respect to said porosity gradient in said filtration layer ( 1 a ).

Claim (Index 13):
Separation system for simultaneous removal of a solid phase particles and a dispersed phase droplets from a medium to be purified by filtration, that is a filtered medium in a form of a suspension or emulsion, that is a liquid continuous phase comprising particles of said solid phase and a liquid dispersed phase which liquid is dispersed in the form of droplets suspended in an immiscible with them liquid continuous phase, which said continuous phase constitutes of said medium to be filtered, wherein the separation system has a form of a multilayer fibrous structure of a self-supported design construction or a construction supported on one or more perforated supporting elements, preferably cylindrical, and it is provided with an inlet and an outlet of said medium to be filtered, wherein said separation system comprises, arranged successively in a flow direction of said medium to be filtered from said inlet to said outlet, following elements in the form of successive layers:\n a filtration-coalescing element in a form of a fibrous structure, a separating element, which is a barrier layer for droplets of said dispersed phase, said element is formed of fibres with phobic properties relative to droplets of said dispersed phase, and a drainage gap, disposed there between and separating said elements and from each other, which gap being a free space for dripping of droplets of said dispersed phase under influence of gravity and being in fluid communication with the accumulation space in which dripped droplets of said dispersed phase are collected, which accumulation space is located immediately below the separation system or above the system and it is provided with a valve, wherein the filtration-coalescing element is a non-woven fibrous structure composed of at least two layers including at least a filtration structure, the separation system is characterized in that: the filtration-coalescing element is in the form of a depth non-woven structure composed of fibres packed in a form of a cartridge and it comprises, viewing in a flow direction from said inlet of inflowing medium to be filtered towards said outlet and arranged in sequence one following another: a filtration layer being an initial depth filtration layer comprising polymer nanofibres, wherein said fibres composing the layer have extensively phobic surface properties, and preferably superphobic properties of their surface relative to droplets of said dispersed phase, defined by contact angles equal to or greater than 120\u00b0, and further the filtration layer is a structure having across its thickness a porosity gradient, namely: its porosity decreases from the inlet side to the outlet side across said layer in said direction of a flow of said medium to be filtered, which porosity is within limits of an average porosity ranging from about 90% to about 95%; a coalescing layer composed of polymer fibres, and adjacently following it is arranged, a dripping layer composed of polymer fibres, wherein both latter layers, which jointly form a coalescing structure are packaged in the form of a depth gradient structure of fibres, and wherein a porosity gradient across the entire coalescing structure changes in the opposed direction with respect to said porosity gradient in said filtration layer, namely the porosity increases in said flow direction of said medium to be filtered stream, and wherein polymer fibres from which the above listed layers are composed demonstrate variable surface properties defined by variable contact angles with respect to droplets of said dispersed phase along a path of said flow of said medium across said coalescing structure in said flow direction, in such a way that a porosity in said coalescing layer changes in gradient ranging from about 75% to about 95% along said flow direction, and said fibres in said coalescing layer exhibit poor philic surface properties and/or poor phobic properties relative to droplets of said dispersed phase which properties are defined by contact angles in the range from about 45\u00b0 to about 95\u00b0, whereas said dripping layer has an average porosity in the range of about 85% to about 98%, and the contact angles defining surface properties of said fibres composing said dripping layer are in the range from about 75\u00b0 to about 105\u00b0.

Metadata:
- Claim Count in Document: 38.0
- Percentile: 86.0
- Lexical Diversity: 2.60606
- Patent Class: 210.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['12820791', '13875859', '12247502', '12780392', '13460560']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7653585862666656
- 35 USC 102 Novelty (BERT): 0.4865949316172764
- Combined Prediction Score: 0.7374822208017268
- Mean Citation Score: 207.994092
- Max Citation Score: 214.0595
- Similarity Product: 162.21658207553625

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test