Chemtex Imidazoline based Corrosion Inhibitor, Emulsifying Agent, Flocculant Chemical

Now formulate specialty chemicals on your own with Chemtex manufactured Imidazoline range.

Imidazolines are heterocyclic group of compounds, having five membered rings with two nitrogen atoms. The nitrogen present in the structure enhances functional derivation, allows other various functional group of Imidazoline radical to work without effecting its paramagnetic properties. The head and the pendant group of the molecule bonds the same to surface while the hydrocarbon tail forms a protective layer or adsorptive layer.

The most widely used representative of the group is the tallow alkyl derivative. The unsaturated C₁₈ consists of one double bond in a CIS isomer configuration that lowers its melting point and is the sole reason behind its liquid state at room temperature. The saturated C₁₈ has no double bonds, providing rigidity to the molecule and raising the melting point with reduced flow ability.

Classified into two groups, Cationic & Amphoteric Imidazolines, the former is the Ammonium Mono Quaternary Salts with asymmetrical structure determined by cations, optically functioning in the aqueous solution where ionized.

• Cationic: The cationic imidazolines have positive charge on imidazoline nucleus and the electrical charge on the molecule remains unaffected by pH changes. Positive charge remains in acidic, neutral and alkaline medium.

• Hydroxy Ethyl Imidazolines: Hydroxy Ethyl Imidazolines are cationic imidazolines centred on fatty acid/ amino ethyl ethanolamine in the ratio 1:1 mostly applicable in deforming materials, oil/water soluble salts, enhancers and stabilizers used in lubricants, paper making processes and metal working systems.
• Amino Ethyl Imidazolines: Amino Ethyl Imidazolines are cationic imidazolines based on fatty acid / diethylenetriamine blended in 1:1 ratio, finding applications in corrosion inhibitors, dispersants, emulsifiers, etc.
• Amido Ethyl Imidazolines: Amido Ethyl Imidazolines are group of cationic imidazolines based on fatty acid / diethylenetriamine in 1:1 proportion, finding applications in textile products, acid detergents, thickeners, flocculants, etc.

• Amphoteric:
• Alkylamphoadiacetates
• Alkyliminopropionates
• Alkyl amphopropionate

Main Application Areas where Imidazoline based formulation are generally used

Oil and Petrochemicals: The adsorption of Imidazoline salts over metallic surface displaces water molecule and form a monomolecular hydrophobic layer over the same. The layer remains persistent over the surface and has the ability to withstand any type of water induced breakdown and acid corrosion.

Metallic Surface Treatment: Imidazolines are considered as excellent metallic surface cleaners, antiscalant and corrosion preventive.

Thickeners and Flocculants: The cationic Imidazolines precipitates the presence of negatively charged certain silicates, nitrates and borates on application.

Industrial sectors like Automobiles, Manufacturing, Oilfields, and Processing facilities have huge involvement of metals and the most crucial problem they face is of corrosion. Heavy Industry metals are prone to the attacks of corrosive substances like acids, bases, oxidizing agents, caustic effects, etc., which react with the metal electrons, decreasing its metallic property and resulting in total structural damage. 

Lubricants and Emulsifiers: As Emulsion, Stabilizers, Lubricity Improver and high grade Viscosifier, Imidazolines are used in number of industrial applications in textile, paper, latex manufacturing, cement processing, polymerization reactions and others.

Paint and Adhesives: When added to paint, it improves adhesive property and glutinousness to wet surfaces with increase in water proofing attribute.

Anti-Biocidal: Pentachlorophenol can be formulated with Imidazoline, primary ingredient of most of biocides, helps in prevention of mould and mildew. It ensures prevention from fungi, spores, bacteria and other organisms to the core that tend to detoriate the operating field conditions.

Medicinal and Pharmacological: Medicines having Imidazolines acts on receptors, manifesting broad spectrum activities such as Anti-bacterial, Anti-fungal, Anti-carcinogen, Anti-ulcer agent, Anti-allergic, Anti-inflammatory, analgesic, anxiolytic, etc.

Chemtex Speciality Limited has been manufacturing Hydroxy, Amino and Amido class of Ethyl Imidazoline that meets extreme corrosion challenges for low and middle range temperature oil and gas extraction sites, downhole operations. Depending upon the working conditions, operating limitations and specific applications, these variants can be formulated as oil soluble, oil soluble/water dispersible or water soluble/oil dispersible. Moreover, these variants can also be formulated as thickeners, flocculants, paints, lubricants, emulsifiers, etc.

Chemtex’s class of Imidazolines

• Have high active matter content
• Have flexible solubility profile for different purposes by organic acid addition
• Are easy to handle, clear liquid at room temperature
• Have high film persistence independently proven through AFM parameters
• Are laboratory validated excellent sour corrosion inhibition performance for low salinity brines and moderate temperature
• Are strongly Cationic
• Are excellent Emulsifiers; Offers good lubricity
• Are good water repelling agent

For more information, kindly visit  www.chemtexltd.com

H2S – A Silent Ultimatum to Oilfields

H₂S Scavenger Chemical – Introduction

The world has witnessed a substantial increase in E&P of crude oil to meet the need for globalization, leading to drilling of ‘deemed undesirable’ sites, owing to the presence of higher concentration of acidic gases like hydrogen sulphide, carbon dioxide, etc. These hazardous gases require proper measures before disposal or scavenging. Of these, Hydrogen sulphide/ H₂S is the most threatening one, especially in confined or ill ventilated places.

The characteristic rotten egg smell makes H₂S recognition easy even at lower concentrations. Hydrogen Sulphide is toxic, acidic and extremely corrosive at higher concentrations. Heavier than air, it is found more near base level of the working sites. Then comes its inflammability, which may cause explosive reaction with air molecules. With peroxides, ammonia and other oxidizing chemicals, H₂S often goes through combustible reactions, producing hazardous vapours of sulphur dioxide. In humid conditions, it can even form the highly corrosive sulphuric acid.

Less than 20 ppm of H₂S concentration may cause eye irritation, throat soreness and burning, dizziness. 80 – 100 ppm may cause serious damage to exposed organs including severe vomiting and breathlessness. More than 500 ppm may cause instant loss of consciousness.

Oilfields involve large metallic installations of drilling rig equipment, on-shore, off-shore rigs, work-over rigs where metallic parts is directly exposed to these drilling conditions, viz., H₂S, causing significant damage if unchecked. This gas engages in the electrochemical reaction with metal ions, weakening their key attributes such as strength, stiffness, impact pressure, etc. Hydrogen sulphide acidifies the drilling fluid, catalyzing pitting nature corrosion on pipelines, drilling machineries, etc. The corrosion rate is further accelerated with CO₂, also naturally occurring alongside H₂S. Together, they have the ability to lower the operational life of upstream and midstream processing units in oil and gas facilities.

The problem with H₂S gas cannot be avoided, measures have to be taken to combat and/ or control its effects, with the use of H₂S scavenging chemicals. These chemicals on application remove the sulphide gas from the drilling site that comes out with crude, preventing any kind of oxidizing reaction on/ with the metal surface.

How H₂S scavenger chemicals work? They form an inert compound on reaction with hydrogen sulphide gas, eliminating even the last traces of hydrogen sulphide from the drilling wells, field condensates and natural gas to improve safety and protection of both equipment and personnel, even meeting the oil and gas specifications. H₂S scavengers have been proven to contribute to hassle free performance, with minimal to no impact on further processing at refineries or in wastewater treatment facilities. The cost-effectiveness of the product has gained immense support from the crude unit engineers during gas lift injection and chemical injection and other off-shore production applications.

Primary applications of H₂S scavengers ensures following results:

• Promptly removes H₂S gas
• No effect on crude quality
• Eliminate irritating odor
• Improves operational feasibility
• Reduces corrosion in drilling equipment and pipelines
• Reduces maintenance and replacement costs, supporting asset integrity
• Enhances production performance

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Hybrid Organic Acid Technology (HOAT) Coolant

Optimal use of machines is directly proportional to its engine performance.

What an engine does is it converts the supplied energy into its mechanical form, driving the machine to work. Engines require one-third of total heat that is generated during conversion and the rest of the heat is needed to be evacuated from the combustion chamber which would otherwise lead to engine failure.

Earlier, water was preferred as an ideal coolant for quite a period of time but the problem started to arise when the temperature would become extremely high or low, to be precise temperature more than 100°C and below 0°C. To get rid of this problem, coolants were formulated. Coolants are categorized chemicals that increases the boiling point of the fluid and decreases the freezing point of the fluid to make it suitable for use in extreme heat and freezing conditions.

Coolants are a proportionate mixture of antifreeze and solvent, mainly glycol and water. Ideally utilized as a preventive in a device from overheating due to its high boiling point and low freezing point property, these chemicals are indulged with anti-corrosive, anti-scaling, and anti-microbial properties, protecting the same from the adverse effects extremely low as well as high temperatures. The coolants are processed with latent heat addition, improvising the cooling efficiency of the same. Coolant Additives are mostly utilized in automobiles, machines, HVAC and various other industrial processing.

Considering the variety of utilization and applications, two new types of coolants are used in most of the HVAC engines are:

• OAT Coolant: Based on Organic Acid Technology, OAT coolants are free of silicates and manifests provides excellent protection to aluminum at high temperature.
• HOAT Coolant: Hybrid Organic Acid Technology is based silicates free, nitrates free and borates free formulation, incorporated with OAT technology which are suitable to be used in HVAC as well as less combusting application. The HOAT package is uniquely designed to protect aluminum, brass, copper, solder, steel, cast iron, aluminum alloys and other components such as rubber hoses, gaskets, rubber seals, and elastomers commonly found in the engine radiator.

The HOAT Coolant Additives also help the industrial equipment to produce superior performance by rendering them protection from metal sludge and scale deposits and any contamination in the radiator. Corrosion Inhibitors are nowadays used in the composition of these Coolant Additives during processing so as to ensure perfect protection to equipment from corrosive attack.

Using HOAT coolant in engines and radiators ensures following benefits:

• Extended operational life for heating and cooling systems
• Excellent anti-corrosion and anti-scaling properties
• Higher stability compared to normal coolants; Does not get reduced with time
• Prevents pitting corrosion
• Prevents the fluid to get over heated, showing effective control on fluid temperature be it high or low
• Lower environmental impact
• Excellent compatibility with Aluminum, Rubber and Elastomers
• Non-foaming
• NAP free Coolant

Chemtex Speciality Limited is an esteemed manufacturer of HOAT type coolants, recognized by world class organizations all over the world. Visit us at http://www.chemtexltd.com/products-and-solutions/heat-transfer-fluids/

 

Acid Corrosion Inhibitor efficiently preventing acid attack

Corrosion is a known phenomenon in the industrial areas and it brings about complicated circumstances in the distribution system which in turn is generally influenced by the metal used, water characteristics etc. Corrosion is referred to the deterioration of materials by chemical interaction with their environment. The term corrosion can sometimes also be applied to the degradation of concrete and wood, plastics, but generally refers to metals. Commonly, Corrosion is a result from water with low pH level where H⁺ concentration seems to be very high to react with the electrons of the cathodes and thus, the problem of corrosion increases. The consequences of corrosion are many and varied and the effects of these on the safe, reliable and efficient operation of equipment or structures are often more serious than the simple loss of a mass of metal.

Acidic Corrosion causes gradual wearing away of material mainly by acidic components. Corrosion due to acid refers to an electrochemical process which is driven by the diffusion of oxygen, moisture, and presence of acidic pollutant on the metal surfaces. In boilers, attack due to acids can be localized at areas with high stress or can take the form of general thinning. Low pH feed water in the boilers can result into serious attack on the metal surfaces.

Acid Corrosion Inhibitor manufactured by Chemtex Speciality Limited have been designed especially for the preventing the attack due to acidic components present in the environment, on the metal components without disturbing the acidic effect or in some places even heightening the acid effect in the given application or process. Acid Corrosion Inhibitor efficiently preventing acid attack, offered by Chemtex, is of the following types such as Sulfuric acid inhibitor, Sulfamic acid inhibitor, Hydrochloric acid inhibitor, citric acid inhibitor, etc.

The type and concentration of the Acid Corrosion Inhibitor to be used is obtained by the type and characteristics of metal to be protected and the conditions under which the metal is to be treated. Iron, Steel, aluminum, titanium, etc., all require alloy specific acid inhibitor formulations of corrosion preventative coatings for the best end result. We, at Chemtex Speciality Limited, prepare a perfect ratio of blending homogeneous solution during the treatment so as to ensure high performance and long lasting protection for the specified metal.