Petroleum refining is characterized by the largest amount of systems exposed to corrosion compared to any other sector of the oil industry. Corrosion problems occur everywhere, from the points of raw materials delivery up to removal and transportation of the refined products. Corrosion control measures shall be taken at crude oil distillation plants and units for alkali treatment of oil, gas plants, reformer and cracking units, straight run deisobutanizers, units for adsorption of hydrogen sulphide from aqueous solutions, furfural treatment units etc. Liquid composition may vary depending on a particular stage of the oil refining cycle – from sulphurous, acid oil-water mixtures fed to refineries to final products (e.g., gasoline) with negligible water content. It is hardly possible to use any “universal” corrosion inhibitor due to the variety of process mechanisms that may cause intense corrosion of equipment used in the oil sector. The need to ensure property package determining processability and compatibility of the inhibitor with corrosion medium components necessitates development of an inhibitor that would be functional in different corrosive conditions. Oilfield water containing large amounts of chloride ions, oxygen, carbon dioxide and hydrogen causes and promotes further development of local electrochemical processes, which represent the most dangerous type of corrosion and failure of metal. Oilfield practice shows that the most dangerous local corrosion damages also occur in the presence of microorganisms. In order to protect oil equipment against chemical and bacterial corrosion, Karvan-L company designed efficient and cost-effective water-soluble and oil-soluble corrosion inhibitors. Corrosion inhibitors are nitrogen-containing surfactants, produced based on natural acids with addition of film-forming admixtures and biocides.
Application: used in production of lacquer materials designed for improvement of colouring agent wet-out and dispersion, increase of sedimentation stability of pigment suspension for 20-30%, reduction of light organic pigment flotation, dispersion time reduction for 30-50%. Due to surface activity and complete compatibility with different organic solvents, copper naphthenate is adsorbed on pigments, decreases discharge of main desiccants for 25-30% at the same time possesses activity synergism with Co and Mn, increases enamel coating firmness and reduces drying time to level 3. Trade dress: calcium naphthenate as a solution in white spirit. Appearance: unclouded homogenous light yellow liquid.
Increase of ecological requirements to emissions of car engines and toughening of operation terms of modern combustion engines require usage of various additives to petrols in larger scales. Restrictions on sulfur content until 0,001 and 0,005% were set forth in Sweden for the 1st time in 1991, and until present they are the strictest one. In 1993 the restriction of sulfur in fuel till 0,05 was applied in USA, in 1994 – in Canada, in 1997 – in Japan. Since 2000 diesel fuel with sulfur content no more than 0,035% is applied. Supposedly, since 2005 sulfur content in fuel wont exceed 0,005%. Along with decrease of harmful emission in exit gases, application of ecologically pure diesel fuels entailed a number of problems: breakdown of fuel pumps, due to decrease of lubricating ability of diesel fuels and .increase of corrosion activity, related with removal of surfaceactive substances able to form protective film. In 2005-2010 stiffer norms on sulfur content are proposed: up to 10 ppm and polycyclic aromatic carbohydrates up to 2%. Starting from 2000, the indicator of lubricating properties of diesel fuels under ISO 12156-1 at HFRR device is included in European standard regarding the diesel fuel EN 590, basing on it the norm is set forth: diameter of wear scar is no more 460 mkm. Requirements to quality of diesel fuels under EN 590
Stable development of our country directly depends on competitive ability of domestic products, which, in its turn, depends on quality control (i.e. level of testing labs). Specificity of analytic labs requires special system of their competitiveness recognition. Their accreditation synthesizes general approaches to accreditation of testing labs and peculiarities of analytic operations. In relation with it the actual is application of international standards: 1.management system of lab quality and application of standards 2. Lab-information systems in quality management system 3. Modern analytic equipment and automatization of separate processes in lab activity. Karvan-L” company lab repeatedly passed accreditation in Azerbaijan State Committee of Attestation, accreditation certificate No. AZ 031.01.11.02.49.07 dated on 14.03.2007. Lab possesses modern equipment for conduction of wide range of analysis in oil chemistry and oil-chemical and organic synthesis, as well as of initial products of synthesis. Particularly, Karvan-L” company lab is fitted by up-to-date machinery for quality control of oily acids, and initial raw material for production of paintwork materials based on pentophtalein, acryl, vinilcetate, polyurethane and etc. film-making clay compositions, driers, initial components of alkyds, acryl, and polyurethane enamels and emulsions, water and oil soluble inhibitors of corrosion, deemulsifiers, additions to oils, oil solvents, aromatic carbohydrates, processed oils and paints, plant oils, sewage of analogical production.
Raw Material From Arcelor Mittal. France The Holland Model Is The Most Famous Models In Azerbaijan Market. The Model Equipment Was Produced By Karvan-l. The Width Of This Product Is 1.20 Metr. The Length To 12 Metres. The Thickness Is 0.45 Mm
Raw Material From Arcelor Mittal. France The Karol Model Is The Most Famous Models In Azerbaijan Market. The Model Equipment Was Produced By Karvan-l. The Width Of This Product Is 1.16 Metr. The Length To 12 Metres. The Thickness Is 0.45 Mm
It is not a secret that the appearance of a house is a sort of a business card for its owner. Embarking on a quest for an architectural solution for the façade of our house or office, we intend to benefit from the uniformity of style, beauty, practicability, and safety A sun breaker or shed is one of key elements of a building decoration which protects the porch or balcony as well as people who like spending time there from the snow, rain and other elements. Insignificant at first glance, but quite important in reality – the element like shed should be not only exquisite and stylish but also strong and safe. And the glass sun breaker from Karvan-Glass is something that satisfies all these requirements. For glass today is a state-of-the-art, stylish and strong material widely used in construction and design. If you want to decorate the building exterior in an unusual style then glass sun breakers are your choice – buy them from our company and satisfy your boldest architectural needs, benefiting from all advantages the state-of-the-art construction technology can provide.
Translucent structures represent a convenient, functional and stylish decoration of various types of buildings and facilities. They look pretty well with business centers, shopping malls, and administrative buildings. They boast a light and elegant appearance but still maintain a serious yet fine exterior. The translucent structures enable to save on artificial lighting as they let in more sunlight. These structures are built using highest quality glass panes, which renders them, even greater advantages, namely noise and heat insulation as well as power saving ability. Translucent structures are about filling both horizontal and vertical planes of a building or facility with glass panes above an aluminum façade. Glass facades from our company represent minimum costs with always-high quality and versatility of designer solutions, which is a decisive factor for most satisfied customers who have already chosen Karvan-Glass.
Due to its special thermal treatment, tempered glass boasts higher impact strength and freeze-thaw resistance compared to regular glass. All tempered glasses are subject to mandatory edge pre-treatment. If broken, such glass falls apart to small fragments with uncut edges. The glass tempering has the following effects:: impact strength rises 5-10 fold flexing strength rises 2-3 fold operating temperature range increases to -150 to +300°C The tempered glass has quite a broad range of applications: glass panes, multilayer glasses with different properties, all-glass partitions, staircases, stairs, hand rails, car windows etc. The tempered glass can withstand hard blows perpendicular to its plane. Despite its improved properties, however, tempered glass is still a fragile material. It is especially susceptible to end loads, so such glass should be installed with extreme care.
Vinyl Windows and Doors An integral part of our company’s activity is the fabrication and installation of vinyl windows and doors. The doors can be of different models and types of opening. We fabricate and install windows and doors using the following profiles. The industry today is capable of producing vinyl, which is ideal for vitrification in all climatic conditions. The profiles for northern latitudes have thicker walls and partitions inside. The thicker is vinyl, the better its energy-saving ability. The number of chambers in such systems is three or more. The uniform width of vinyl frames enables to carry out glazing in conformance with windows and underline the design integrity. The door vinyl is decorated using the same materials and same technology as that for the windows. Which implies all items being of one color and style. The excellent noise insulation will allow you to enjoy a warm conversation with your friends. For now, the disturbing noise will not distract you from your pleasant home chores. Installing additional multifunctional glasses, you will enjoy a tender sunlight in the summertime and have a shield that reflects the heat back into your house in winter.
It has been decades that architectural glass sheets have been utilized as a construction material. Over this time, manufacturers have achieved a significant success in terms of fabrication and finishing technology, bringing the glass properties almost to perfection. Increasingly pronounced in glass industry is the nanotechnology sector, which renders it specific and extraordinary properties in terms of operation and aesthetics, thus opening new bright perspectives for architects and designers. It would be fair to say that it was new safe multilayer glass items that helped discover most significant improvements of properties and capabilities of glass as a construction material. All valuable operation and technical properties of such glass are achieved by using a “sandwich” principle, i.e. by creating a multilayer composite structure with a polymer layer in between. It is still difficult to appreciate the whole significance and implications of this development. Regrettably, many issues of perfecting the technology and equipment that helps create multilayer glass (triplex production equipment) have been outside researchers’ focus of attention, thus hindering the practical development across the entire range of safety glass application. Most new properties are still unknown and require serious theoretical and experimental developments to uncover. Among these: detailed study of formation and development of multilayer glass production technology based on innovative polymer materials with a higher strength compared to existing materials, research of properties and application of hybrid structures based on new composite elements. The combination of fragile glass and plastic materials (for instance: polycarbonate and glass sandwich panels, glass and acryl tile etc.) enables to optimize the functionality of multi-layer shutterproof glass. It is beyond doubt that ongoing researches in this area will boost the improvement of existing and development of new approaches to designing and creating multilayer glass machines for industrial-scale production.
It often happens that people confuse glass panes and vinyl windows. These are not synonyms, however. A glass pane is a part and nearly crucial part of a window structure. This is a translucent structure consisting of two or more glasses that are fixed (glued) together along the outline using spacing bars and sealant compounds. Main functions of a glass pane: natural lighting, thermal and noise insulation. Glass panes are categorized by manufacturing process: standard, where molecular sieve is poured into a metal or vinyl spacer, after which the glued glass sheets are plastered along the edge with silicon, isomelt, polysulfide or polyurethane sealant compound, thus providing the secondary sealing. Warm edge technology-based manufacture This is a new and promising technology. It differs from the standard technology in that instead of several production steps as in the case with glass pane it involves only two (flexible spacer application, pressing), thus greatly saving time and cost. Such glass pane is warmer than that manufactured using a standard technology. As defined in GOST 24866, glass pane are categorized as follows: by number of chambers. A space between each two glass sheets is called a chamber. Glass panes can be single-chamber (two glass sheets), double-chamber (three glass sheets) and so on. by width The glass pane width is the full width considering its glass and air part. Glass panes can be 14, 16, 18, 20, 22, 24, 28, 32, 36, 40, 42, 44 etc. mm By glass type: regular energy-efficient glass with low-emission coating (hard or soft, also known as - or I-type) noise-resistant triplex sun-screening tinted or film-coated glass shutterproof glass with a high protection class.
A technology that creates a dim surface and renders it grainy and non-transparent (an operation contrary to polishing). The dimming allows drawing a picture on a glass surface. The dimming is widely used in manufacture of glass and ceramic dishware, decoration elements, imitation jewelry, souvenirs, glass furniture and other glass items. Glass dimming methods can be categorized by five groups: dimming by mechanical treatment; chemical dimming; application of dimmed coating by firing; application of dim paint coats; other dimming methods.
Karvan-Glass specialists carry out the vitrification of balconies and sunrooms using sliding aluminum and swing vinyl systems. If you plan a balcony vitrification, we suggest to select the profile (aluminum or vinyl), which requires comparing advantages of applied profile systems. Sliding aluminum systems represent the following advantages: practicability and usability; saving internal space; low weight; long life; affordable price. Swing vinyl systems represent the following advantages: high noise insulation; good heat insulation; long life; swing flaps ensure easy maintenance.
o this day, petroleum acids are still being studied by a number of researchers. Interest in the above class of organic compounds is not only attributed to practical perspective, but also to general humanitarian purposes. According to S. Nametkin, "... composition and structure of petroleum acids are closely related not only to the genesis of oil, but to the origin of life on Earth as well". Depending on their origin, oils may contain different amounts of naphthenic acids, extremely insignificant in all cases. Naphthenic acids are extracted from oils using alkali alcoholic solutions. Structure of naphthenic acids in any oil is the same and depends on the nature of oil. Among the oil produced worldwide, and particularly in the CIS region, Azerbaijan's oil features the highest content of petroleum acids. Oils of Bibi-Heybat, Romani, Binagadi, Balakhani, Sabunchi and other fields are rich in petroleum acids, which content in some crude oil grades reaches 1.5 – 2%. Due to the fact that acids extracted from naphthene-base crude of Baku oil fields have the same composition and physical-chemical properties as synthetic naphthenic acids, they are often referred to as natural naphthenic acids.
Acryl emulsion based and used for binding upper substrata layers (plastering, concrete, brick), ensuring adhesion to subsequent paint layer. It contains antimicrobial component slowing down growth of bacteria and mould. Solvent: Water. Expenditure: 1kg per 30-40m2 in single layer. Drying time: 2 hours at 200C
"KARVAN-L" company is one of the first specialized entities manufacturing lacquer products in Azerbaijan. Work experience gained in construction market allows to manufacture lacquer materials both for large users and ad-hoc products adjusted to customer requirements. Highlyskilled specialists of central plant laboratory develop the material formula with special features: physical-mechanical parameters; viscosity, adjusted to customer requirements; different structure of painted surface; frost-resistance, enabling savings during transportation and storage; change in coating and whiteness; changes in elasticity and firmness of top film layer. Modern high-performance equipment, own scientific and research base allows the company constantly expand range of manufactured products and increases its quality. Our company produces more than 50 types of lacquer products: masonry paints, priming, filler, enamel; lacquer materials for metal and timber protection; construction glue and sealers; pentaerythritol-modified phthalic varnish and sunflower oil, coloured and clear varnish for parquet, furniture and other timber materials. “KARVAN-L” products are certified by Azerbaijan Republic State Standard and SanEpidemNadzor (center of sanitary supervision and disease control) authorities. Our company is a repeated winner of contests for supply of masonry paint, road striping coatings and other materials for Construction programs of Baku Government.
Is alkyd varnish based enamel and provides durable coating, possesses excellent features. It is used for internal and external application. It is prepared as gloss and matt enamels, and flooring enamel. Solvent: White spirit. Expenditure: 130-150g per 1m2. Drying time: 24 hours at 18-220C
Designed for protective and decorative finish of external faces of buildings and facilities with stone porous surface. Protect from contamination and preserve initial natural state of stones. It may require tinting with coloured pigment paste. Solvent: water. Expenditure: 1 kg per 6-8 m2. Drying time: hour at 200C.
Is used for colouring of organic diluted enamels and paints: pentaerythritol-modified phthalic , glyptal; Colours: red, black, blue, green, yellow.
