Heat 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.
The 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.
Features
Standard units are equipped with a Borosilicate 3.3 shell, glass tubes, PTFE baffles, and individual tube seals.
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
Glass-Lined Shell and Tube Heat Exchangers
DDPS 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
Specifications
Pressures from full vacuum to 87 psi (5.8 bar)
Model D Heat Exchangers
Advantages
The 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.
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.
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
Core-Therm Heat Exchangers
Advantages
The 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.
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
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)
QVF Borosilicate Glass Coil Heat Exchangers
Coil 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.
Features
The coil heat exchanger design is based entirely on glass. The coil is fused to the shell. Units are supplied in various designs.
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.
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