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US7279089B2 - Method for preventing fouling and corrosion ...

Method for preventing fouling and corrosion caused by ammonium chloride and ammonium sulphates, characterised in that it comprises injecting as an additive a choline or a derivative thereof.

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WO2005067446A2 - Composition and method for preventing ...

A composition comprising aminoalkyl imidazoline or alkyl-substituted succinimide antifoulants or mixtures thereof, and use of aminoalkyl imidazolines and alkyl-substituted succinimides to prevent fouling in (meth)acrylic acid manufacturing processes and processes in which (meth)acrylic acid is used in a reaction and where unreacted (meth ...

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METHOD FOR PREVENTING FOULING - NITTO DENKO

4/12/2014  1. A method of preventing fouling of a structure, the method comprising the following steps: (step 1) preparing an antifouling pressure-sensitive adhesive tape including a base material layer (A) and a pressure-sensitive adhesive layer (A) formed on one surface side of the base material layer (A), and an easily adhering pressure ...

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US Patent for Method for preventing fouling in the ...

A method for preventing fouling in the slurry polymerization of olefins in a solvent in the presence of a catalyst, which comprises causing a small amount of a nitrogen-containing salt of phytic acid or a mixture of it with an alkali metal salt of an organic acid to be present

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New fouling prevention method using a plasma gliding arc ...

The present study introduces a new fouling prevention method using a plasma discharge as a non-chemical device targeting bicarbonate in produced water. Since the plasma arc discharge generates intense, highly localized heating , , , the arc can be utilized to remove bicarbonate ions in produced water as shown in this study.

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Method for preventing fouling in polymerization reactors ...

27/7/1999  The invention relates to a method for preventing fouling in polymerization reactors, in particular in loop reactors, in which alpha-olefins are polymerized or copolymerized in particle form in the presence of catalysts.

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US Patent for Methods for reducing surface fouling in fuel ...

Methods for preventing or reducing fouling of equipment having a metal surface that contacts a reaction byproduct in a fuel production system are provided. The method may include treating the metal surface in the fuel production system by contacting a fouling inhibitor with the metal surface. The fouling inhibitor includes a bicyclic organic ...

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Mussel Fouling Control: Techniques for Zebra Mussel ...

To be successful, mussel fouling control methods must meet several key criteria: Effectively prevent industrial process interruptions, equipment de-ratings and shutdowns caused by mussel fouling; Ensure that the integrity and availability of safety-related systems is

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"Method of preventing biofouling using an anti-fouling bio ...

The invention comprises a biological hydrogel that is chemically stabilized with non-covalent or covalent cross-links. The biological hydrogel is used to coat surfaces of materials for submersion in marine water. Molecular dissolution at the marine water-hydrogel surface prevents attachment of fouling organisms. The rate of dissolution can be ...

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Fouling in Heat Exchangers - InTech - Open

Fouling in heat exchangers is not a new problem. In fact, fouling has been recognised for a long time, and research on heat exchanger fouling was conducted as early as 1910 and the first practical application of this research was implemented in the 1920’s. Technological

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CONSERVATION A NEW TECHNOLOGY FOR PREVENTING FOULING

technologies of solving the problem of preventing fouling and heat-transfer enhancement, the fluidized bed preventing - fouling and heat-transfer enhancement technology is an effective method with broad application prospects, which can online prevent fouling and enhance heat transfer in heat

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METHOD AND DEVICE FOR PREVENTING FOULING BY SHELLFISH ...

The invention relates to a method and device for preventing fouling by shellfish in technical apparatus fed with seawater or fresh water, such as cooling equipment of power plants or

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Method for preventing fouling in unsaturated hydrocarbon ...

Method for preventing fouling in unsaturated hydrocarbon, particularly fouling due to one or more carbonyls present or formed in unsaturated hydrocarbon, characterized in that an additive formed by a solution of at least one hydride in a solvent is added to the unsaturated hydrocarbon.

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Corrosionpedia - What is Fouling? - Definition from ...

Fouling can be classified into two broad categories: microfouling and macrofouling. Macrofouling is caused by coarse matter of either inorganic or biological origin, such as animals and plants. An example is what occurs in heat transfer components in heat exchangers - the course matter may be contained in the polluted cooling waters or contaminated gases from the wind.

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Electrochemical Methods for the Prevention of Microbial ...

The chemical and mechanical methods of fouling prevention include the use of biocidal chemicals, toxic paints, brushes, ultrasonic vibrations, uv light, etc. An electrochemical method would be desirable in many situations, as the method works directly at the metal-electrolyte interface.

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Prevention of UF membrane fouling in drinking water ...

To prevent fouling effects, these substances should be removed before the water reaches and passes through the membrane. This can be achieved by some form of pre-treatment method or process, such as adsorption (Cui and Choo, 2013; Wang and Benjamin, 2016), oxidation (Liu et al., 2011), or coagulation (Yu et al., 2013).

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Combining air recharging and membrane superhydrophobicity ...

The present work studies the effect of maintaining air layers on the membrane surface and superhydrophobicity as a new method for preventing fouling of MD membranes by salts, particulates, and organic particles.

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Copper Fouling - benchrest

My question about copper fouling is how to prevent its buildup in the first place. Is there any method of bore prep that anyone has found to work to delay copper fouling? Any advice is appreciated:)

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Method Preventing Wo1996032420a1

method preventing wo1996032420a1 - bnbincorg. ... Nov 11, 2003 The present invention also relates to a process for preventing fouling during the continuous gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Natta type catalyst.

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Mitsubishi Heavy Industries Ltd. Patent Issued for System ...

"The fourth invention relates to a method to prevent chemical fouling on a reverse osmosis membrane, comprising a pre-treatment process that pre-treats raw water, a reverse osmosis membrane process that separates permeate water and concentrated water from pre-treated inflow water by a reverse osmosis membrane, salts being removed in the ...

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Method Reducing Ep0366823B1

Method Reducing Ep0366823B1; AU706943B2 Method for preventing fouling and sheeting in. AU706943B2 AU53360/96A AU5336096A AU706943B2 AU 706943 B2 AU706943 B2 AU 706943B2 AU 53360/96 A AU53360/96 A AU 53360/96A AU 5336096 A AU5336096 A AU 5336096A AU 706943 B2 AU706943 B2 AU 706943B2 Authority AU Australia Prior art keywords reactor gas phase ...

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Membrane Fouling And Prevention What Works And What’s New

Seawater systems, usually larger and always more expensive, employ this method on 15 to 20 percent of new systems. Where fouling prevention is most crucial, such as for military operations, arid oilfields, mines, or shipboard purification systems, UF/MF’s better quality effluent is also often justified.

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Combining air recharging and membrane superhydrophobicity ...

The present work studies the effect of maintaining air layers on the membrane surface and superhydrophobicity as a new method for preventing fouling of MD membranes by salts, particulates, and organic particles.

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The Fouling of Metallic Surfaces - MBLWHOI Library

The Fouling of Metallic Surfaces Sheathing with copper appears to have been the first adequate method of preventing the fouling of ships' bottoms, and was also the most successful technique employed for this purpose. The use of lead sheathing by the ancients, which was also current at the time copper sheathing was in-

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8.6 Fouling - SWEP

The main fouling risk is due to corrosion products from other parts of the system. These particles will be carried by the water and may adhere to the heat transfer surface or lodge inside the heat exchanger. This type of fouling should be considered as particulate fouling, and prevented as for particulate fouling.

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Effects of Various Antifouling Coatings and Fouling on ...

It is also a design feature that has been associated with preventing fouling [13,14]. A KSV CAM200 goniometer (KSV, Helsinki, Finland) was used to measure contact angle at seven di erent points using the sessile drop method. The surface energy was determined using the equation

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Prevention of PVDF ultrafiltration membrane fouling by ...

20/7/2016  Prevention of PVDF ultrafiltration membrane fouling by coating MnO 2 ... a novel pre-treatment method has been evaluated at laboratory scale consisting of the addition of low dose ozone into the UF membrane tank after coagulation and the ... Prevention of PVDF ultrafiltration membrane fouling by coating MnO 2 nanoparticles ...

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Fouling Control, Particulate Screening and Infestation ...

Preventing Macro Fouling. ... The Ever-Clear™ Filter also provides an ideal method for filtration in many manufacturing process industries. The Kinectrics’ team custom designed Ever-Clear™ to meet specific mussel control and particulate filtration needs. Kinectrics’ Specialized Services.

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Marine - Evoqua

In some instances they can reduce efficiency to a point where the vessel will reduce speed and therefore spend additional time at sea. Chloropac® systems are a proven method of preventing marine biological fouling using insitu, a dilute, safe solution of sodium hypochlorite providing energy efficient, long term plant operation.

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A Review on Boiler Deposition/Foulage Prevention and ...

A Review on Boiler Deposition/Foulage Prevention and Removal Techniques for Power . Plant. N. HARE, M.G. RASUL * AND S. MOAZZEM . College of Engineering and Built Environment, Faculty of Sciences, Engineering and Health

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How to prevent catalyst from fouling? - ResearchGate

To reduce the Tar fouled, I used catalyst (dolomite and lime powder) in-situ, in wood pellet boiler. The results showed that fouled material color changed (whitish material fouled). I think used catalysts also fouled on the heating plate. I am really looking to find out the method which trapped the catalyst in the bed and prevents it from fouling.

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Fouling Resistant Biomimetic Poly(Ethylene Glycol) Based ...

A common strategy for preventing biofouling is to graft an anti-fouling polymer onto a surface as depicted in Figure 1. 4 Key features of such grafted polymer systems include chemical characteristics, molecular weight and architecture of the antifouling polymer, and the method by which the polymer is grafted to the surface.

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Analysis of long-term mechanical grooming on large-scale ...

fouling establishment on the AF coating. The effectiveness of weekly grooming at preventing macrofouling establish-ment on the FR coating varied seasonally. The results suggest that frequent mechanical grooming is a viable method to reduce the fouling

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CPC Definition - B08B CLEANING IN GENERAL; PREVENTION OF ...

CPC Definition - Subclass B08B. ... The cleaning method or apparatus being characterized by the method or apparatus for conveying the bottles to or from the ... Preventing fouling or deposition of fouling or of dust by means of giving articles subject to fouling a shape or arrangement such that fouling or deposition of fouling or of dust will ...

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heat exchanger fouling - HC Heat Transfer

For shell and tube heat exchanger, the common method is to use fouling factors. For other types of heat exchangers, excess heat transfer area is often used. However, fouling is a self-fulfilling prophecy and the selection of fouling factors or excess area must be done carefully.

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Preventing salt fouling in FCC main fractionators

Preventing salt fouling in FCC main fractionators. Results of using salt dispersant additives on a badly fouled FCC unit has shown that the method allows refiners to avoid more costly methods of naphtha fractionation and, potentially, water washing of the main fractionator.

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Ultrafiltration - Wikipedia

Ultrafiltration (UF) is a variety of membrane filtration in which forces like pressure or concentration gradients lead to a separation through a semipermeable membrane. Suspended solids and solutes of high molecular weight are retained in the so-called retentate, while water and low molecular weight solutes pass through the membrane in the permeate (filtrate).

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DIFFUSER FOULING MITIGATION, WASTEWATER

DWP quantified the fouling dynamics of fine pore diffusers. A diffuser fouling physical treatment (reverse flexing, RF) method was able to mitigate fouling of the fine pore diffusers by preventing an increase in DWP normally observed in fouled fine pore diffusers. The RF treatment method reduced fouling by 35 % as compared to the control diffuser

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