Separation unit for microbial and scale treatment

Patent metadata

Field	Value
Publication number	US-10092860-B2
Application number	US-201715606912-A
Country	US
Kind code	B2
Filing date	May 26, 2017
Priority date	Apr 25, 2014
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A method to continuously clean a fouled process stream using a magnetic field comprising feeding the fouled process stream, comprising a fouling constituent, to a magnetic separation unit. The magnetic separation unit comprising a separation vessel configured to receive the fouled process stream, a mounted magnet configured to generate the magnetic field operable to reduce a concentration of the fouling constituent. The mounted magnet comprising a magnet motor configured to rotate a shaft, the shaft configured to rotate a magnet, and the magnet configured to generate the magnetic field. A circulation pump fluidly connected to the separation vessel and a sampling point configured to allow removal of a sample. The method further includes measuring the concentration of the fouling constituent in the sample and supplying an effluent stream from the separation vessel to a clean collection vessel.

First claim

What is claimed is:

1. A microbiological treatment unit for cleaning a fouling constituent from a fouled process stream using a magnetic field, the microbiological treatment unit comprising:
a magnetic separation unit, the magnetic separation unit configured to reduce a concentration of the fouling constituent in the fouled process stream to create an effluent stream, the magnetic separation unit comprising:
a separation vessel, the separation vessel configured to receive the fouled process stream, the separation vessel having a body with an external surface, the body defining an interior cavity,
more than one mounted magnet partially adjacent to the separation vessel, each mounted magnet configured to generate the magnetic field, such that the magnetic field encompasses the magnetic field generated by each mounted magnet, the magnetic field operable to remove the fouling constituent, each mounted magnet comprising:
a magnet motor adjacent to the external surface of the separation vessel;
a shaft connected to the magnet motor, the magnet motor configured to rotate the shaft, the shaft extending into the interior cavity of the body of the separation vessel; and
a magnet connected to the shaft, the shaft configured to rotate the magnet, the magnet having a shape, the magnet configured to generate the magnetic field,
wherein the rotation of the magnet generates the magnetic field,

a circulation pump fluidly connected to the separation vessel, the circulation pump configured to receive a circulation feed from the separation vessel to produce a circulation return, wherein the circulation return is recycled to the separation vessel; and
a sampling point fluidly connected to the separation vessel, the sampling point configured to allow removal of a sample, wherein the sample comprises a fluid from the separation vessel; and

a clean collection vessel, the clean collection vessel configured to receive the effluent stream.

2. The microbiological treatment unit of claim 1 , further comprising additional magnetic separation units, wherein the additional magnetic separation units are connected in series,
wherein the effluent stream of a first magnetic separation unit is fed to a next magnetic separation unit in the series,
wherein the effluent stream of a last magnetic separation unit in the series is fed to the clean collection vessel.

3. The microbiological treatment unit of claim 1 , wherein the process stream is selected from the group consisting of water, hydrocarbons, and combinations thereof.

4. The microbiological treatment unit of claim 1 , wherein the fouling constituent is selected from the group consisting of biological micro-organisms, paramagnetic scale, ferromagnetic scale, and combinations thereof.

5. The microbiological treatment unit of claim 1 , wherein the magnet of each mounted magnet comprises neodymium.

6. The microbiological treatment unit of claim 1 , wherein the shape of the magnet of each mounted magnet is a cylinder.

7. The microbiological treatment unit of claim 1 , where each mounted magnet further comprises additional magnets, the additional magnets having an arrangement along the shaft of each mounted magnet, wherein the arrangement along the shaft is continuous, rows, or patterned.

8. The microbiological treatment unit of claim 1 , wherein the sampling point is located between the separation vessel and the circulation pump.

9. The microbiological treatment unit of claim 6 , wherein the shaft of each mounted magnet runs through the center of the cylinder, such that the magnet is affixed around the shaft.

Assignees

• Saudi Arabian Oil Co

Inventors

• Alabbas Faisal M
• Kakpovbia Anthony

Classifications

• C02F2103/10

  from quarries or from mining activities · CPC title

• B01D17/00 Primary

  Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion (devices for separating or removing fatty or oily substances or similar floating material from water, waste water, or sewage C02F1/40; cleaning or keeping clear the surface of open water from oil or like materials E02B15/04; arrangements for separating lubricants from refrigerants F25B43/02) · CPC title

• C02F1/488 Primary

  for separation of magnetic materials, e.g. magnetic flocculation · CPC title

• C02F2303/20

  Prevention of biofouling · CPC title

• C02F2101/32

  Hydrocarbons, e.g. oil · CPC title