HEAT EXCHANGE EQUIPMENT
A heat exchanger is a technical apparatus in which heat is exchanged between two mediums having different temperatures.
Type of heat exchangers:
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Shell-and-tube exchanger
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Plate-type heat-exchanger (dismountable type, welded type)
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Spiral-type heat exchanger
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Submersible heat exchanger
Shell and tube heat exchangers benefit from a wide operating temperature range, resistance to pressure hammer, high efficiency, wear resistance, durability, maintainability, operational safety and the ability to operate in aggressive environments.
Gasketed plate heat exchanger:
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Compact design
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Competitive delivery time
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Easy maintenance
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High heat transfer efficiency
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Resistant to contamination
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High turbulence due to individual plate design
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The gasket material enables multiple use
Welded plate heat exchanger:
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Plate pack welding is fully robotised
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Competitive delivery time (316L steel - 4 months; titanium, 254SMO, nickel - less than 6 months)
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Reinforced frame elements to withstand mechanical expansion of the plates
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No leaks in the corners of the plates
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Comfortable design for maintenance (all sides open)
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Operating pressure: vacuum…50 bar (g.)
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Design temperature: -52 С ° …+400 С °
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Min delta temperature inlet – outlet: 2 С°
Spiral-type heat exchanger:
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No dead spots
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Highly effective channel cleaning
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High heat transfer coefficients in "difficult" medium
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Channel geometry for maximum product removal
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Circular shape completely eliminates stress on the components
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Ideal for liquids containing solids, fibres, sludges, slurries and suspensions
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Heat transfer area up to 800 m2
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Design pressure: Vacuum...45 bar (g)
Submersible heat exchanger:
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In the submersible coil heat exchanger, one heat transfer medium moves through a coil that is submerged in a tank with another heat transfer medium. The speed of the liquid in the shell side is negligible and hence the heat transfer from the liquid is comparatively low. These heat exchangers are used due to their simplicity and low cost in small installations.
Application:
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Water/steam water condenser
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Chlorine vapour condenser
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Hydrogen (drying) cooling
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TEG heat exchanger (thermoelectric generator)
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Amine and glycol heat exchanger
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Top condenser
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Heater/cooler, liquor condenser
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Raw bottom product heat exchanger
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Cooling the ammonia water tank
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Condenser of a rectification column
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Produced water heat exchanger
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Crude oil heat exchanger/cooler
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Ethylene oxide/ethylene glycol units
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Heat recovery units at refineries
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Heat exchanger for primary refineries
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Solvent/gasoline chiller
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Also: pharmaceuticals, food industry, petrochemicals
Air-cooling unit (ACU)
General-purpose air cooling units (ACU) are heat exchange equipment and are designed for:
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For cooling gases and liquids
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Condensing steam and vapour-liquid medium in technological processes of chemical, petrochemical, oil-refining, oil and gas industry with medium pressure from 0,6 to 10 MPa (6 - 100 kgf/cm2) or under vacuum with residual pressure not lower than 665 Pa, temperature not higher than 400 C and viscosity at the outlet to 5*10 -5 m/s2.
The unit can consist of 3 horizontally arranged tube sections made up of finned bimetallic tubes. The sections are mounted on a metal structure. The fan wheel drive is placed on a separate frame. The fan wheel, rotating in the collector cavity, drives air through the inter-tube space of the sections, cooling the product. The cooled process product moves inside the bimetallic finned tubes, transferring the heat through their walls to the cooling agent. The cooling medium is atmospheric air. The units can be equipped with a humidifier, heater and louvers. Louvers are available with manual adjustment or automatic rotation of the shutters. The units can be equipped with recirculation system consisting of panels, upstream, downstream and side louvers. The recirculation device ensures that the air heated in the pipe sections is recirculated to prevent overcooling of the product in winter.
The following types of air coolers are available:
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ACH- horizontal air cooling unit
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ACZ - zigzag-shaped air cooling unit
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ACS - small-flow
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Package type designs
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Units with recirculation of heated air
Applications:
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Refining industry
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Gas processing industry
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Petrochemical industry
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Chemical industry
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Gas industry, etc.
Spray drying units
The spray dryer allows the production of powder products by water evaporation and can be used with solutions, suspensions and emulsions.
Once the necessary operating parameters have been set, the dryer will be the solution to obtain powder products or fine sinter with fixed and constant characteristics (moisture, particle size distribution, density).
The process involves spraying the concentrated liquid to be supplied into small droplets in a chamber in which hot air is circulated.
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Designed for any capacity required by the Customer;
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Feed rates from a few hundred grams to over 100 tonnes per hour;
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Continuous operation provided by fully automatic control;
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Possibility of use with both heat-resistant and heat-sensitive products;
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Spray drying system with fluidised bed and closed loop, turbine dryer, indirect heat exchanger, external fluidised bed and dust collector.
Applications:
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Petrochemicals;
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Pharmaceuticals;
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Food industry.
COOLING TOWERS AND COMPONENTS
Cooling towers are considered to be the most efficient means of cooling water for industrial facilities worldwide. With economic and environmental factors in mind, it is always important to consider the fact that the construction and operation of evaporative cooling towers requires the use of sufficiently efficient modern fillings.
We offer a wide range of different types of cooling towers, with individual solutions for each individual Customer's project:
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Fan cell-type cooling tower
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Hybrid cooling towers
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Natural draught cooling tower
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Mini-cooling towers
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Air condenser
Fan cell-type cooling tower:
Overview:
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Multi-unit design versatility, which allows adjustment to varying ambient air temperatures
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Forced air circulation
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Compact design
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Maximum use of prefabricated components
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Available in various cooling water quantities and cooling powers
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Typical applications in power stations and many industries
Benefits:
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Low capital costs
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Multi-sectional design allows for adjustment to any load and air temperature
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Maximum use of prefabricated structures, which reduces construction time
Weak point:
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Electricity costs for the operation of the fans
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Cost of maintenance and spare parts
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Possibility of recirculation
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Possible side effect of adjacent cooling towers
Hybrid cooling towers (combination of air and water-cooling).
Overview:
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No typical vapour cloud
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Multi-sectional or circular type
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Forced ventilation
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Nowadays it is widely used in power plants and many industries.
Benefits:
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Reducing the size of the vapour cloud
Weak point:
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Higher capital costs than standard cell-type cooling tower
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High risk of recirculation
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Higher energy costs
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Maintenance and spare parts costs.
Natural draught cooling tower
The principle of natural circulation cooling towers is based on air convection, with hot air naturally rising through the tower cavity. Natural circulation water cooling towers are mainly used in the power sector, but can also be installed in other industrial facilities. Large volumes of water can be cooled. The tower can also be made of concrete or metal construction.
Benefits:
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No energy consumption for fan operation
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No recirculation
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Low cost of maintenance and spare parts
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Low heat loss
Weak point:
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High capital costs
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Large footprint, which can lead to difficulties related to the aesthetics of the site and the need for large areas to accommodate the cooling tower
Forced circulation cooling towers are structurally similar to naturally ventilated cooling towers, but are equipped with fans for increased efficiency. The fans are installed either in the air intake openings or on the pad above the heat exchange elements. The increased airflow rate reduces the overall size of the structure. They are used in power plants and industrial cooling processes.
Benefits:
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Lower investment costs compared to free-circulation cooling towers
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No recirculation
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Reduced energy consumption for fan operation due to draught effect
Weak point:
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Energy costs for fan operation
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Still relatively high capital investment
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Cost of maintenance and spare parts
Mini cooling tower
The cooling tower models we offer can be either open or closed. They can be of mixed type to better organize water sources, according to seasonal temperatures.
Mini cooling towers are suitable for water flow rates up to 400 m3/h.
Using the strongest materials (stainless steel) and the best technology in the construction of our thermodynamic cooling towers: our partner designs cooling towers obtaining the best hydrothermal efficiency, reducing water consumption by 20%, as well as evaporation and the reduction of energy required.