OIL-WATER SEPARATION TREATMENT SYSTEM AND OIL-WATER SEPARATION TREATMENT METHOD

• US 20170015567A1
• Filed: 03/24/2015
• Published: 01/19/2017
• Est. Priority Date: 04/11/2014
• Status: Abandoned Application

• Current Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: KASHIHARA, Hideki
• Application Number:
  US15/124,128
• Publication Number:
  US 20170015567A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B01D 2311/04 Specific process operations in the feed stream; Feed pretreatment
• CPC Class Codes: B01D 2311/2626 Absorption or adsorption
• CPC Class Codes: B01D 2315/06 Submerged-type; Immersion type
• CPC Class Codes: B01D 63/02 Hollow fibre modules
• CPC Class Codes: B01D 69/08 Hollow fibre membranes manufacture of hollow fibres D01D5/24, D01F1/08
• CPC Class Codes: B01D 69/12 Composite membranes; Ultra-thin membranes
• CPC Class Codes: B01D 71/36 Polytetrafluoroethene
• CPC Class Codes: B01J 20/261 obtained by reactions only involving carbon to carbon unsaturated bonds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds per se C08F
• CPC Class Codes: B01J 20/262 obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds per se C08G
• CPC Class Codes: B01J 20/28038 Membranes or mats made from fibers or filaments
• CPC Class Codes: C02F 1/24 by flotation C02F1/465 takes precedence
• CPC Class Codes: C02F 1/285 using synthetic organic sorbents
• CPC Class Codes: C02F 1/286 using natural organic sorbents or derivatives thereof
• CPC Class Codes: C02F 1/288 using composite sorbents, e.g. coated, impregnated, multi-layered
• CPC Class Codes: C02F 1/40 Devices for separating or removing fatty or oily substances or similar floating material cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; devices in sewers for separating liquid or solid substances from sewage E03F5/14, e.g. for use in drains leading to the sewer E03F5/16
• CPC Class Codes: C02F 1/44 by dialysis, osmosis or reverse osmosis general membrane separation processes B01D61/00, membrane modules B01D63/00, electrodialysis C02F1/4693, combination of membrane modules and bioreactors C02F3/1268
• CPC Class Codes: C02F 2101/32 Hydrocarbons, e.g. oil
• CPC Class Codes: C02F 2103/10 from quarries or from mining activities
• CPC Class Codes: C02F 2209/005 Processes using a programmable logic controller [PLC]
• CPC Class Codes: C02F 9/20 Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems

Abstract

An oil-water separation treatment system according to an embodiment of the present invention is an oil-water separation treatment system that separates a water-insoluble oil component from an oil-water mixed liquid, the system including an adsorption tower unit including at least one adsorption tower module, and a filtration unit including at least one filtration membrane module in that order. The adsorption tower module includes a tubular main body disposed vertically or horizontally, and a plurality of treatment layers which are divided from each other along an axial direction of the main body and in which a plurality of particles are enclosed. The filtration membrane module includes a filtration tank, a plurality of hollow fiber membranes that are disposed in the filtration tank and held in a state of being arranged to extend in one direction, and a holding member that fixes both ends of the plural hollow fiber membranes.

Claims

1. An oil-water separation treatment system that separates a water-insoluble oil component from an oil-water mixed liquid, the system comprising:

an adsorption tower unit including at least one adsorption tower module; and

a filtration unit including at least one filtration membrane module in that order,

wherein the adsorption tower module includes a tubular main body disposed vertically or horizontally, and a plurality of treatment layers which are divided from each other along an axial direction of the main body and in which a plurality of particles are enclosed, and

the filtration membrane module includes a filtration tank, a plurality of hollow fiber membranes that are disposed in the filtration tank and held in a state of being arranged to extend in one direction, and a holding member that fixes both ends of the plural hollow fiber membranes.

2. The oil-water separation treatment system according to claim 1, wherein the adsorption tower module includes, from the upstream side, a first treatment layer in which a plurality of first particles are enclosed, and a second treatment layer in which a plurality of second particles having an average diameter smaller than that of the first particles are enclosed, and the average diameter of the second particles is smaller than the average diameter of the first particles.

3. The oil-water separation treatment system according to claim 2, wherein the average diameter of the first particles is 100 μ

m or more and 2,000 μ

m or less, and the average diameter of the second particles is 10 μ

m or more and 500 μ

m or less.

4. The oil-water separation treatment system according to claim 1, wherein the hollow fiber membranes each include a supporting layer containing polytetrafluoroethylene as a main component and a filtration layer disposed on a surface of the supporting layer and containing polytetrafluoroethylene as a main component.

5. The oil-water separation treatment system according to claim 1, wherein the oil-water mixed liquid is oilfield produced water.

6. The oil-water separation treatment system according to claim 1, comprising a control unit that cleans the adsorption tower module and the filtration membrane module.

7. The oil-water separation treatment system according to claim 1, wherein the filtration membrane module further includes a bubble supplier that supplies a bubble from below the hollow fiber membranes.

8. The oil-water separation treatment system according to claim 6, further comprising a movable body on which the adsorption tower unit, the filtration unit, and the control unit are placed.

9. The oil-water separation treatment system according to claim 1, further comprising a separator that separates an oil-water mixed liquid from a drilled fluid.

11. The oil-water separation treatment system according to claim 6, further comprising a separator that separates an oil-water mixed liquid from a drilled fluid.

10. An oil-water separation treatment method for separating a water-insoluble oil component from an oil-water mixed liquid, the method comprising:

a step of performing an adsorption treatment of an oil-water mixed liquid, the step being performed by an adsorption tower unit including at least one adsorption tower module; and

a filtration treatment step performed by a filtration unit including at least one filtration membrane module

in that order,

wherein the adsorption tower module includes a tubular main body disposed vertically or horizontally, and a plurality of treatment layers which are divided from each other along an axial direction of the main body and in which a plurality of particles are enclosed, and

the filtration membrane module includes a filtration tank, a plurality of hollow fiber membranes that are disposed in the filtration tank and held in a state of being arranged to extend in one direction, and a holding member that fixes both ends of the plural hollow fiber membranes.