# US 10,478,869 B1 · Method, system and device for reducing microbial concentration and/or biofilm formation

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- Number: US 10,478,869 B1
- Document ID: US10478869B1
- Status: Granted
- Kind: B1
- Application number: 16/400,302
- Filed: 2019-05-01
- Granted: 2019-11-19
- Earliest claimed: 2018-06-21
- Assignees: Dabney Patents, L.L.C.
- Applicants: Dabney Patents, L.L.C.
- Inventors: Paul Dabney
- Web page: https://patentgrep.com/patent/US10478869B1

## CPC

- B08B 7/0057: {by ultraviolet radiation}
- A61L 2/10: Ultraviolet [UV] radiation
- A61L 2/18: Liquid substances
- B01J 19/123: {Ultraviolet light}
- B08B 7/0035: {by radiant energy, e.g. UV, laser, light beam or the like}
- B08B 9/027: Cleaning the internal surfaces; Removal of blockages
- B08B 9/08: Cleaning containers, e.g. tanks
- B08B 17/00: Methods preventing fouling {(preventing accumulation of deposits in pneumatic conveyors B65G53/521)}
- C02F 1/72: by oxidation {(C02F1/4672 takes precedence)}
- E21B 21/068: {using chemical treatment}
- C02F 2303/20: Prevention of biofouling
- C02F 2305/023: Reactive oxygen species, singlet oxygen, OH radical
- B08B: CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- A61L: METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES (preservation of bodies or disinfecting characterised by the agents employed A01N; preserving, e.g. sterilising, food or foodstuffs A23; preparations for medical, dental or toiletry purposes A61K)
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

## Abstract

Described herein are various methods, systems, and apparatus for reducing and eliminating biofilms from hydrocarbons. A combination of oxidizing agents and radiation of certain wavelengths forms a synergistic reaction. The synergistic reaction generates EMODs, which are effective in reducing microbial count and eliminating or blocking biofilm formation, particularly in anaerobic environments. This synergistic reaction has a relationship to EMOD creation and has a detrimental effect on Microbial Contamination (MC), Microbial Influenced Corrosion (MIC) and biofilm creation. MC, MIC and biofilm can be eliminated or greatly reduced with the treatment methods in or on equipment including pipelines, storage tanks, and refinery processing equipment.

## Claims

### Claim 1

A device for reducing microbial concentration in a hydrocarbon or for reducing biofilms formed in a hydrocarbon, on the surface of the hydrocarbon, or on the surface of equipment involved in the storage, transport or processing of the hydrocarbon, comprising:
a hydrocarbon container;
an oxidizing agent introducing component for introducing a liquid composition oxidizing agent compound to hydrocarbon to be treated, and
at least one radiation emitting component for creating radiation of certain wavelengths arranged inside the hydrocarbon container, the at least one radiation emitting component being one of (i) a floating mat having a density to enable flotation at an interface between hydrocarbon content and water accumulated in the hydrocarbon container, (ii) a mat that rests on the bottom of the hydrocarbon container, or (iii) a lining layer on a wall of the hydrocarbon container,
wherein the liquid composition comprising the oxidizing agent compound functions together with the radiation of certain wavelengths to lead to a synergistic reaction.

### Claim 2 (depends on 1)

The device of claim 1, further comprising at least one sensor for detecting one or more of the following properties of the hydrocarbon to be treated: pH, temperature, salinity, density, oxygen concentration, flow rate, microbial content, the presence of bacterial species known to cause Microbial Contamination or Microbial Influenced Corrosion, the presence of corrosive metabolites, the presence of an aqueous environment, the presence of high bacterial biomass, and the microbial content, location and position of biofilms.

### Claim 3 (depends on 1)

The device of claim 1, wherein the at least one radiation emitting component emits radiation of a wavelength between 300 nanometers and 600 nanometers.

### Claim 4 (depends on 1)

The device of claim 1, wherein the at least one radiation emitting component is a floating mat that is one of suspended in the hydrocarbon container or supported in the hydrocarbon container, so that the radiation emitting component is physically close to the interface between the hydrocarbon content and the water accumulated in the container of the hydrocarbon.

### Claim 5 (depends on 1)

The device of claim 1, wherein the at least one radiation emitting component is a mat that rests on the bottom of the hydrocarbon container.

### Claim 6 (depends on 1)

The device of claim 1, wherein hydrocarbon container is a pipeline for delivery of the hydrocarbon, and the at least one radiation emitting component is arranged inside the pipeline as a lining layer on the wall of the pipeline.

### Claim 7 (depends on 1)

The device of claim 1, wherein the at least one radiation emitting component is configured to be adjustable with respect to wavelength, intensity, duration time and/or location relative to the hydrocarbon to be treated, of the radiation, on the basis of one or more of the density and light absorbing quality of the hydrocarbon to be treated, the size and shape of the hydrocarbon container, whether the hydrocarbon is under aerobic or anaerobic conditions, pH of the hydrocarbon, salinity of the hydrocarbon, consortium or population characteristics of the microorganism present in the hydrocarbon, the microbial content of the hydrocarbon, and the microbial content of the biofilms.

### Claim 8 (depends on 1)

The device of claim 1, wherein the oxidizing agent introducing component is adapted to introduce an effective amount of the liquid composition with a minimal amount of the oxidizing agent compound which results in a measurable or detectable reduction of the microbial concentration or the biofilm formation.

### Claim 9 (depends on 8)

The device of claim 8, wherein the oxidizing agent introducing component is adapted to introduce the effective amount of the liquid composition as a concentration of the oxidizing agent that is between 0.001 percent to 50 percent or more of the volume of the hydrocarbon to be treated.

### Claim 10 (depends on 1)

The device of claim 1, wherein the oxidizing agent introducing component is adapted to introduce an effective amount of the liquid composition comprising the oxidizing agent determined by one or more of the density and light absorbing quality of the hydrocarbon to be treated, and the size and shape of the hydrocarbon container.

### Claim 11 (depends on 1)

The device of claim 1, wherein the oxidizing agent compound is hydrogen peroxide, urea, carbamide peroxide, or benzoyl peroxide.

### Claim 12 (depends on 1)

The device of claim 1, wherein oxidizing agent introducing component is adapted to introduce a formulation of the liquid composition as determined on the basis of whether the hydrocarbon to be treated is under aerobic or anaerobic conditions, pH of the hydrocarbon, salinity of the hydrocarbon, consortium or population characteristics of the microorganism present in the hydrocarbon, the microbial content of the hydrocarbon and/or the microbial content of the biofilms.

### Claim 13 (depends on 1)

The device of claim 1, wherein the oxidizing agent introducing component is adapted to introduce the liquid composition comprising the oxidizing agent compound and at least one additional inhibitor against Microbial Contamination in a hydrocarbon and/or Microbial Influenced Corrosion on a metal surface.

### Claim 14 (depends on 13)

The device of claim 13, wherein the at least one other inhibitor is a biocide selected from the group consisting of germicides, antibiotics, antibacterials, antivirals, antifungals, antiprotozoals and antiparasites.

### Claim 15 (depends on 1)

The device of claim 1, wherein the oxidizing agent introducing component introduces the liquid composition comprising the oxidizing agent compound, through a pump, into the hydrocarbon to be treated.

### Claim 16 (depends on 1)

The device of claim 1, wherein thing hydrocarbon container is configured to enable introduction of the liquid composition comprising the oxidizing agent compound manually into the hydrocarbon to be treated.

### Claim 17 (depends on 1)

The device of claim 1, wherein at least two radiation emitting components for creating radiation of certain wavelengths are positioned inside the hydrocarbon container, at least one radiation emitting component being a floating mat having a density to enable flotation at an interface between hydrocarbon content and water accumulated in the hydrocarbon container, and at least one radiation emitting components being mat that rests on the bottom of the hydrocarbon container.