Air-cooled Heat Exchangers


Fabsco air cooled heat exchangers (ACHX) are exchangers that use ambient air to pull heat from a liquid or gas stream.  These exchangers can be either horizontal or vertically configured, with either forced or induced draft air.  ACHX require no cooling water, and operational costs are lower than other types of exchangers.

Air cooled heat exchangers are primarily used in several applications, including:

  • Condensing

  • Gas compression

  • Petrochemical

  • Petroleum refining

  • Power generation

  • Refrigeration


Shell and Tube Heat Exchangers

Shell and tube heat exchangers are the most common type of heat exchanger in oil refineries and other large chemical processes, and are well suited for high pressure applications.  As its name implies, they consist of a shell (large pressure vessel) with a bundle of tubes inside it.  One fluid runs through the tubes, while another fluid runs around the tubes to transfer heat between the two. The set of tubes is called the tube bundle, and may be composed of either bare or finned tubes.  Fabsco manufactures shell and tube exchangers in various configurations, including U-tube and straight tube designs, single or multi-pass, and single or dual phase.


Brazed Aluminum Heat Exchangers

Fives has manufactured more than 10,000 brazed aluminum heat exchangers (BAHX) since 1959. BAHX's offer several advantages over conventional exchangers:

  • Compact: 4-5x less surface area per volume

  • Lighter weight

  • Improved behavior under cryogenic temperatures

  • Larger temperature gradients from warm end to cold end

  • High and low pressure streams can be in the same exchanger



Hairpin Shell and Tube Heat Exchangers

R. W. Holland has been manufacturing hairpin shell and tube heat exchangers since the 1970's.  This style of heat exchanger offers several advantages over conventional exchangers:

  • Operates in true counter current flow, permitting extreme temperature cross

  • Economically adaptable to service differentials

  • Ideal for wide temperature ranges and differentials

  • Standard double pipe or multi-tube design reduces engineering, thermal design, drafting and shop fabrication costs

Cold Boxes

A Fives cold box includes one or more integrated brazed aluminum heat exchanger(s) in a carbon steel casing.  These cold boxes combine brazed heat exchangers with any type of complementary cryogenic equipment, such as:

  • Knock-out drums

  • Two-phase injection drums

  • Distillation columns

  • Interconnecting piping

  • Valves and instrumentation

Process Burners

UOP Callidus process burners are designed to meet NOx reduction requirements in refinery or petrochemical fired heater applications. Optimize your burner for more efficient use with the Next Generation Ultra-Low NOx CUBL series of burners. 

Burners can be customized to fit almost any process heater application, including refinery heaters, reformers, ethylene cracking and coking units.



UOP Callidus flare systems are designed to safely combust waste gases while meeting your specifications, process criteria and performance requirements. They meet EPA and international standards while safeguarding your plant and terminal operations. 

With options available to meet any smokeless requirements and flare gas recovery units to help you meet your Zero Flaring initiatives, UOP Callidus has your flare needs covered.

UOP Callidus flares are used in hydrocarbon and petrochemical processing, oil and gas production, and steel and carbon black industries.

Thermal Oxidizers / Incinerators

UOP Callidus thermal oxidizers are used for both gas and liquid wastes; including inorganic particulate, various acids, and hard-to-burn organic compounds. Thermal oxidizer offerings include SRU tail gas, fume, halogenated waste, bound nitrogen, catalytic oxidizers, and downfired designs including units with ratings of more than 400 MMBtu/hr.

Total solutions available that includes all necessary equipment for a complete thermal oxidizer package:

  • Heat recovery (ie waste heat recovery)

  • Heat exchangers for gas or air

  • System components (scrubbers, absorbers, bag houses, blowers, etc)

Selective Catalytic Reduction (SCR)

UOP Callidus SCR systems can be used to reduce NOx and CO from a wide range of combustion and process emission sources, helping meet environmental and regulatory goals. Computational Fluid Dynamics (CFD) modeling is used on each project to guarantee system performance.

UOP Callidus can provide total system packages, including process gas conditioning, emission reduction, and post process gas heat recovery.

API Process Heaters

Tulsa Heaters Inc. (THI) designs and manufactures process heaters and waste heat recovery units in accordance with API Standard 560. Applications include:

  • Crude Heaters

  • Vacuum Heaters

  • Hot Oil Heaters

  • Regeneration Gas Heaters

  • Reactor Feed Heaters

  • Reboilers

  • Multi-cell Reformer Heaters

  • Delayed Cokers and Visbreakers

THI also offers complimentary equipment, including air pre-heat systems, burner management systems (BMS), and post combustion emission controls (i.e. SCR).

Non-API Process Heaters

Tulsa Heaters Midstream (THM) offers custom engineered process heaters for various applications where API Standard 560 is not required. These fired heaters are used in various applications, such as gas processing plants for hot oil heating and regen gas heating.

The THM standard offering uses ultra-low NOx technology, helping meet environmental and regulatory needs. Heaters are designed as modular units to facilitate faster and easier installation.

Vessels and Skids

Boardman is a leading provider of ASME pressure vessels, towers, columns, stacks, rotary kilns, dryers, ducting, and pipe spools. Boardman provides products and services to many different industries, including:

  • Oil and gas

  • Refining

  • Petrochemical

  • Industrial

  • Construction

  • Marine

  • Mining