Naphthenic acids and their derivatives are widely used in more than 40 sectors of national economy. Naphthenic acids in a form of lead, manganese, zinc, ferrum, aluminium, chrome salts and in a form of other derivatives, are used in preparation of paint driers, varnishes, paints. Free naphthenic acids are used as a part of inks and improves their mobility. These acids are also used as thinner for aniline colorants, sleeper impregnation material preserving wood from rotting. Both free and derivative naphthenic acids have effective fungicidal, insecticidal, bactericidal and preservative parameters which are used in weed and pest control, for impregnation of wood, sail fabric, canvas, rope, tarpaulin, fishing gear and other materials regularly affected by moisture, bacteria, pest, etc. Lead, chrome, cobalt and manganese salts of naphthenic acids are used as antistatic, antideteriorant and antifoam additives for fuel, jet engine fuels and oils. Lubricating and emulsifying materials used for cooling of shearing machines, pasting, lubrication grease for high-pressure plants, demulsifiers brea-king petroleum and oily emulsions are based on naphthenic acids. Simple and compound ethers of naphthenic acids are used as plasticizers for production of polymeric materials, general rubber goods, polyvinylchloride plastic, hydraulic liquids, etc. Naphthenic acids are successfully used even at cleaning of rareearth elements, extragens of radioactive materials, catalysts, oxidation and oxonation processes, agricultural growthregulating substances, drying accelerators for glassreinforced polyesters, etc. In order to meet consumer needs for naphthenic acids, “KARVAN-L” company has developed technology and established commercial installations for output of high-purity acids.
To 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.
Naphtenic acids acids exudes from alkaline wastes after leaching distillates of diesel oil and kerosene naphtenic oils are effective stimulators plants growth. Oil growth substance is represent as water solution sodium salt of naphtenic acids 40%. (OGS) steep seeds before sowing use mixture with chemical fertilizers during vegetation for plant spraying in blooming period. Using the OGS grout concentration in water from 0, 001 to 0, 4 sharply to raise cotton productivity, winter wheat and other products. The OGS is supplied: 1. OGS increased growth (evolvement) of plants especially in initial stage and vegetation stage. Influence effect is depend on plant nature, soil nature, conditions and etc. 20-25% at a speed almost always rise, on the whole this indices are contained in interval from 20% ( it is was not lawyer) and it can exceed 100% over. 2. OGS increased crops productivity. In converting to productiveness from 1m2 in total due to increase speed and growth of yields quantity effect is very seemly. 40% 3. OGS sharply resistibility diseases and survival rate extreme conditions
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.
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.
The all-glass enclosing structures of elevator shafts provide the main advantage of perceptible fragility and exquisiteness combined with guaranteed reliability and long life. The panoramic glazing of elevator shafts with architectural shutterproof glass (which is more commonly referred to as a panoramic elevator) has an advantage to conventional enclosed shafts. The main type of elevator shaft glazing Karvan-Glass apply is point glazing: glass is attached to the bearing structure made of stainless or construction steel using point fittings specially designed to compensate for dynamic loads that occur during operation of an elevator. In doing so, the maximum transparency is achieved. The versatility of elevator shaft designs using architectural safety steel is virtually unmatched among other materials. It ranges from full transparency which gives a panoramic view to passengers in an elevator through to modern photoprints on glass capable of embodying any designer’s concept. For instance, hidden glass fittings enable to create a solid structure that shares concept with the decorative glazing of walls.
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.
Quick details: Place of origin: Baku,Azerbaijan Material: HDPE Item: Winding Pipes Structure: Bellows inside and outside Certification: ISO9001 Color: black (inside yellow) Standard: OHSAS 18001 Specification: As your requirement OD: 800-3500 mm Length: 1-6 meters ( in specific order 12-18 meter) Packaging & delivery: Depends on your order. Description: Winding pipes of large diameter,high and low pressure.Standart length of this pipes: L= 6 meters.This length makes easy to package them in a raw,storage and transporting.Possibility: 1-6 meters for special targets.Some situation needs pipes with length,larger than standart,and less number of joints,so we could offer pipes of 2-3 sections with length 12 and 18 meters. Nominal diameter of the pipe corresponds to its inner diameter. Applied wall construction leads to the simplicity and strength of the pipe ring. Compared with other pipes, they dare less weight and wall structure of these pipes allows a higher tolerance to static loads. Structural rigidity depends on the type of profile. Profiles type PR: This type has a smooth inner and a ribbed outer surface. Low weight can be obtained a high hoop strength. Profiles type OP: This profile type also has a smooth inner and a ribbed outer surface. The external profile has the shape of "Olympic rings". It is also light weight and high strength ring.
Quick details: Place of Origin: Baku,Azerbaijan Specification: Depends on your requirement Size: Depends on your requirement Model Number: HDPE Thickness: Depends on your requirement Color: Black,White Material: PE Standard: OHSAS 18 001 Packaging & delivery: Depends on your order. Description: Until recently in the construction of sewage wells used only concrete and iron structure. However, it is much better to use plastic manholes. Plastic wells used in the networks of household, storm sewage and lubricant. Plastic wells are also used for arranging industrial technological channels. Wells provide access to drains, shut-off and control valves and measurement technology. In addition, they can be used as drainage, rain receivers and inspection chambers. Plastic wells nesomnitelnymi have the following advantages compared to other types of wells (concrete, cast iron, brick) • a small proportion (compared with concrete) • easy installation, transportation and storage • easy maintenance • long service lines and trouble-free operation • high impact resistance material • connection leaks • resistance to mechanical damage, corrosion resistance • ductility of the material, its resistance to low temperatures, abrasion, UV radiation. • resistance to aggressive chemical environments • blocking leakage of sewage into the soil • high strength of the well shaft • lack of height restrictions • complete sealing of all joints and penetrations • Products are not afraid of frost and mechanical loads. Offered by our company options polyethylene manholes are used for a variety of purposes sama, subdivided into: • Inspection • Stormwater • Drainage • For measuring devices and valves • In order to establish the electrical, instrumentation and automation Also polymer wells divided by functionality: Sight - allowing to carry out maintenance work, which are used in floatable, household and storm water channels. Heavy - intended to collect rainwater, often with sand trap. Perepadnaya - allowing you to connect a channel on a mark above the bottom of the tray portion of the well. Cable plastic well to order - for laying the cabling in the electrical connection. Distribution of plastic wells - sharing household and sewer racks for several tanks settling.
Crude oil flowing from wells contain fair amount (often 20-30%, sometimes up to 60-65%) of water with dissolved salts from basis point up to 1-2%. This significantly increases viscosity of crude oil, generates stable emulsion and makes the oil inadequate for refining and transportation. Water produced together with oil is usually in very unusual state, i.e. it is spread in oil in the form of droplets (emulsified form). Less the size of droplets, more stable the emulsion. One of the main reasons of emulsion stability is also the presence of resin, pyrobitumen, paraffin, and other oil admixtures like glycerine, microcrystal of paraffin, ceresin in crude oil. These substances generate quite firm and thick (protective films) on the surface of water and solid particles thus preventing merging of water drops and solid particles and their spontaneous segregation from oil. At present physical, thermal, physico-chemical, electrical and combined methods of oil emulsion breaking are used for oil dehydration and oil desalting. One of the widelyused and most effective methods is physicochemical combined method using chemical reagents demulsifiers. Demulsifiers are substances with high surface activity. They are concentrated in interfacial areas of oil emulsion, break protective films covering solid particles, water droplets and neutralise their electric charges. After this, small droplets will merge into bigger drops under the influence of mutual attraction, loosen and segregated from oil.Oil demulsifying is carried out in oil field and oil refinery plants. At present “KARVAN-L” company tries to provide integrated work cycle: – development production supply and implementation of produced demulsifiers together with consumer. Demulsifier Karvan-200 is designed for oil dehydration and desalting in gathering system and oil treatment plant. Reagent can also inhibit corrosion processes.Demulsifier Karvan-201 is designed for separation of both light and heavy crude emulsion. This reagent is the composition of macroglycols and nitrogen-bearing surfactants in organic solvent environment Demulsifier discharge per 1 ton crude is 10-60gr. Dosage depends on emulsion stability, treatment temperature, water separation period and desired depth of oil processing. Optimum dosage and demulsifier application process ensuring necessary results can only be defined as per test results carried out in practical use sites.
Toolroom having efficient precise equipment can fast and in workman-like manner to produce production tools: details pressurization from plastic and rubber, including additional remote fueling connecting, moulds for 2 colored founding. demention of pressing details 1000x1200mm, mould weight to 3000 kg, stableness 60-100 thousand snatching. For improvement details setting, appearance qualitative of shape mould elements executed from stainless steel with grade 40×13 thorough work surface polishing. Forms for founding under pressure of from aluminum alloy and zinc alloy. Maximal measurement casts 1000×1200 mm, forms weight to 3000 kg, stableness 50-80 thousand snatching. Different die tooling including die tooling for fine blanking details on moulds threefold actions, providing shear purity not lower RA 1,25 and dimensional accuracy up to 7 finish, which excludes ancillary details mechanical revision (grinding). Labor componentry are practically gapless (gap between labor parts is 0,005mm), executed from steel X 12M, maximal sizes of operating groove500x600mm, stamp stab-leness up to 300 thousand snatching. For stamp stableness decreasing it is possible variant labor componentry with hardmetal alloys usage. Instrumental equipped by highly productive equipment and unique machine CHPU Fanuc. For increase of durability of casting forms lowtemperature galvanization is applied. Plant has unique site of fine blanking on presses of triple action with force of slash form 50 up to 240 tn per sec. Enterprise has facility to get orders for manufacture of blanking, pressforms and forms for casting under agreed prices. Term of manufacture is from 1 up to 6 months depending on complexity of arming. The workshop realizes complete cycle of pressforms casting. Projection of arming is realized by appliance of engineering modeling programs. Development of technologic programs of mechanical processing Manufacture of details on boring, turning machine Milling, thermal treatment, profile, round, optic, coordinate polishing, erosion weaving, wire cuts Benchwork, polishing and mounting Besides pressforms the workshop manufactures stamps, appliances, spare parts to equipment and other items. Subsidiary services operate, also repair, service of the equipment, tool grinding. Personnel of technical department and of the workshop possesses great experience in projection and manufacture of pressforms. Documentation in technical department on arming passes agreement, and technical development. Technological programs of machine processing are established, tool of second tranquility is projected.
Quick details: Place of origin: Baku,Azerbaijan Material: HDPE Thickness: 1.8-70.5mm Item: PE 100 pipes Structure: Bellows inside and outside Certification: ISO9001 Color: black Standard: OHSAS 18001 Specification: As your requirement OD: 16-1200 mm Length: As your requirement Type: Flexible and Durable Packaging & delivery: Depends on your order. Description: Preparation of ?? 100-based polyethylene Pipes is considered as a beginning of a new phase in plastic Pipes production. These Pipes are considered more contemporary and characterized by high pressure resistance. As distinguished from other brands of Pipes (?? 63, ?? 80), these Pipes with less wall thickness have higher mechanical characteristics. Pipes ?? 100 are applied in the following areas: • Underground and surface drinkable and technical water pipeline network • Water drainage system • Field irrigation systems • Oil fields • Chemical and petrochemical industry • Construction of buildings and industrial facilities • Construction of main and local gas pipelines Advantages of PE100 Pipes: • Durability. ?? 100 Pipes obtain 50 years of minimal guarantee, this duration can be extended during operation. • High shock resistance, cracking resistance • High chemical resistance • Resistance to sunlight • Manufactured in standard sizes and in roll form • Smooth inner surface • Suitable for the usage in seismically active areas • Freeze resistance • Wide range of pressure Range of pipe sizes produced under normal pressure • DN - outer diameter of pipe, (mm) • s - pipe wall thickness, (mm) • SDR - Standard Dimension Ratio • M - Estimated weight (kg/m) 20 bar - SDR 9 DN: 16- 630 mm S: 2-70.3 mm M: 0.09-123 kg/m 16 bar - SDR 11 DN: 20-710 mm S: 2-64.5 mm M: 0.116-131 kg/m 12,5 bar - SDR 13,6 DN: 25-1000 mm S: 2-73.5 mm M: 0.148-214 kg/m 10 bar - SDR 17 DN: 32-1200 mm S: 2-71.1 mm M: 0.193-252 kg/m 9,5 bar - SDR 17,6 DN: 40-1200 mm S: 2.3-68 mm M: 0.281-242 kg/m 8 bar - SDR 21 DN: 40-1200 mm S: 2-57.2 mm M: 0.244-206 kg/m 6,3 bar - SDR 26 DN: 50-1200 mm S: 2-45.9 mm M: 0.308-167 kg/m 5 bar - SDR 33 DN: 63-1200 mm S: 2-36.7 mm M: 0.392-134 kg/m 4 bar - SDR 41 DN: 75-1200 mm S: 2-29.4 mm M: 0.469-108 kg/m
Halal Meat, Sheep, Lamb, Livestock, Goat, Sheep Offal, Sheepskin, Sheep Tide, Sheep Gut, Sheep Casing, Sheep Tail Fat, Frozen Lamb, Sheep, Goat Meat.
Fresh onions, fresh garlic, eggs, fresh fruits, chickpeas.
Fresh Fruits Pomegranate.
Fresh Fuji Apple.
Hazelnuts, walnuts, garlic, onion.
Fresh fruits like grapes pomegranate and melon .
chicken meat.
Chicken feet, mid joint wings, chicken paw..
