Heat Exchangers

heat exchangerHeat transfer is an integral component in virtually all processes.  Depending on the equipment usage requirements, heat exchangers, also called condensers, coolers, and boilers, can perform various functions. Heat exchangers made of inert, non-metallic materials are a requirement in the chemical and pharmaceutical industries where it is essential to avoid any interaction between the materials of construction and the substance being processed.  In addition to chemical resistance there is a prime requirement for resistance to abrasion and ease of cleaning in equipment of this type.  DDPS offers a wide range of shell and tube and glass coil heat exchangers and associated components to optimize your heat transfer requirements. By providing us with the parameters of your process, our customer engineers can pinpoint the appropriate size and type of heat exchanger that is the optimal solution to your process requirements. Our heat exchangers are available as stand alone equipment or can be incorporated into a system.

Shell and Tube Heat Exchangers

Glass Coil Heat Exchangers



Shell and Tube Heat Exchangers

Shell and Tube Heat ExchangersShell and tube heat exchangers provide a versatile alternative to coil-type heat exchangers.  They were conceived as condensers, but they are equally suitable for heat transfer between two liquids or gases. 

 DDPS offers the following types of shell and tube designs:

Borosilicate Glass Shell and Tube Heat Exchangers

Glass-Lined Shell and Tube Heat Exchangers

Model D Heat Exchangers

Core-Therm Heat Exchangers



Borosilicate Glass Shell and Tube Heat Exchangers

Glass Shell and Tube Heat Exchanger Advantages

QVF Glass Shell and Tube Heat ExchangerThe RBW series heat exchangers offers a range of capabilities to meet high-corrosion process needs effectively.  It can cope with the most stringent demands for product purity, process versatility and ease of maintenance. The model RBW features individual tube seals, allowing an extremely reliable seal and simple replacement or plugging of tubes from the end.

Glass Shell and Tube Heat Exchanger Features

Standard units are equipped with a Borosilicate 3.3 shell, glass tubes, PTFE baffles, and individual tube seals.

Glass Shell and Tube Heat Exchanger Specifications

  • Heat transfer area from 2.5 to 25 m²

Options

  • Single or triple pass
  • Vertical installation
  • Silicon Carbide heat exchanger tubes for increased heat transfer efficiency

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Glass-Lined Shell and Tube Heat Exchangers

Glass-Lined Shell and Tube Heat Exchanger Product Description

Glass-Lined Heat ExchangerDDPS features two main types of glass-lined heat exchangers:

The EC-type exchanger is mainly used as a condenser.  In conjunction with our reactors, it is possible to make up distillation ranges of any composition.  Its design is plain and permits to achieve great exchange areas with a small bulk. The EC exchanger can also be designed to serve as a heater or an evaporator.

The ED-type exchanger is particularly suited for the heating/cooling of products, by means of the thermal exchange between one fluid and another.  It is made up of easily interchangeable standard sections.  The product-side connection is made with loose flanges, bolts and PTFE envelope gasket, and that on the jacket by welding neck flanges or threaded couplings with flexible metal tube.  This exchanger has the following advantages:

  • Ability to adjust the bulk to existing local conditions
  • Increasing or decreasing the exchange area
  • Large exchange areas

Glass-Lined Shell and Tube Heat Exchanger Specifications

  • Pressures from full vacuum to 87 psi (5.8 bar)

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Model D Heat Exchangers

Model D Heat Exchanger Advantages

Model D Heat ExchangerThe Model D offers a roster of capabilities to meet high-corrosion, high pressure, full vacuum, high temperature process needs effectively.  It can cope with the most stringent demands for product purity, process versatility and ease of maintenance.

Model D Heat Exchanger Features

At the heart of its toughness and versatility is a steel reinforced, glass filled PTFE tube sheet with individual tube rings for extremely reliable sealing and maintenance.  Standard units are equipped with a carbon steel shell, glass tubes, PTFE baffles, and individual tube seals.

Model D Heat Exchanger Specifications

  • Heat transfer area from 40 to 505 ft²
  • Pressure up to 90 psig (6 bar)
  • Temperatures up to 350ºF (175ºC)

Options

  • Single, double or triple pass designs
  • Alternative MOC for bonnets, shell and tube

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Core-Therm Heat Exchangers

Core-Therm Heat Exchanger Advantages

Core-Therm Heat ExchangerThe diffusion resistant Core-Therm tube plate with its integral support plate and the corrosion-resistant materials PFA and PTFE can be used at high pressures and also operated under vacuum. Silicon carbide heat exchange tubes meets all the requirements of an optimum HE tube because of its heat conductivity of 125 W/m²K and its high corrosion resistance.

Core-Therm Heat Exchanger Features

  • Constructed of glass-lined steel with silicon carbide tubes.
  • Single tube seal with double clamp rings
  • Diffusion-resistant tube plate
  • QVF single tube seal

Core-Therm Heat Exchanger Specifications

  • Heat transfer area from 0.4 to 40m²
  • Pressure from -15 to 150 psig (-1 to 10 bar)
  • Temperature from -40ºF (-40ºC) to 390ºF (200ºC)

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QVF Borosilicate Glass Coil Heat Exchangers

Glass Coil Heat Exchanger Product Description

QVF Glass Coil Heat ExchangerCoil type heat exchangers are mainly used as condensers, coolers, or boilers. They can, however, be used for heat transfer between liquids and gases in general.

Glass Coil Heat Exchanger Features

The coil heat exchanger design is based entirely on glass.  The coil is fused to the shell.  Units are supplied in various designs.

Glass Coil Heat Exchanger Advantages

Turbulent flow is ensured even in the larger nominal bores since the coil layers are offset and fill the flow cross-section to a great extent.  This creates the following advantages:

  • No possible leak between the shell and the coil, making the design ideal for GMP applications.
  • Outstanding corrosion resistance
  • No possible metal contamination, yielding the highest product purity.
  • Suitable for direct installation into columns

Glass Coil Heat Exchanger Specifications

  • Heat exchange area from 0.2 to 15.0 m²

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