DUROSHELL

Alfa Laval DuroShell Plate-and-Shell Heat Exchanger

The Alfa Laval DuroShell is a fully welded plate-and-shell heat exchanger developed for demanding process duties involving challenging temperatures, pressures and media. Its compact construction combines efficient plate heat-transfer technology with the strength of a pressure-containing shell.

Surya Sankara Trading Pvt. Ltd. supports industrial customers with DuroShell product enquiries and application discussions in Hyderabad, Telangana and other South Indian locations.

Surya Sankara Trading Pvt. Ltd. is an Authorised Distributor for Alfa Laval products.

Alfa Laval’s official DuroShell product information.

What Is an Alfa Laval DuroShell Heat Exchanger?

DuroShell is a gasket-free plate-and-shell heat exchanger. Its heat-transfer surface consists of specially formed plates joined into a welded plate pack and installed within an outer shell.

The plate channels create turbulence that supports efficient heat transfer, while the welded construction makes the unit suitable for demanding industrial applications where conventional gasketed heat exchangers may not be appropriate.

Equipment selection must be based on the actual process duty, fluid properties, temperatures, pressures, allowable pressure drop and applicable design requirements.

Key Benefits of DuroShell

Compact and Lightweight Construction

The efficient plate-and-shell design can provide substantial heat-transfer surface within a comparatively compact unit. Its smaller footprint may simplify plant-layout and installation requirements, subject to the selected model and process duty.

Gasket-Free Heat-Transfer Surface

DuroShell uses a welded plate pack without interplate gaskets. This makes the technology suitable for duties involving temperatures, pressures or process media that may not suit conventional gasketed plate heat exchangers.

Laser-Welded Plate Pack

Laser welding contributes to the strength and integrity of the plate pack. The final equipment configuration and design limits must be selected for the specific application.

Efficient Heat Transfer

The plate pattern promotes turbulence and effective use of the available heat-transfer surface. This can support close temperature approaches and heat recovery where the process conditions permit.

Designed for Demanding Duties

DuroShell is engineered for demanding process conditions, including selected high-pressure, high-temperature and corrosive-media applications. Material selection remains essential and must be confirmed against the fluid composition and operating conditions.

Resistance to Thermal and Pressure Fatigue

The specialised plate pattern and welded construction are designed to handle demanding operating conditions. This can be valuable in processes involving thermal or pressure cycling.

Flexible Multipass Possibilities

Depending on the selected configuration, multipass arrangements can help accommodate particular temperature programmes and process requirements.

DuroShell Applications

Alfa Laval DuroShell heat exchangers may be considered for demanding heating, cooling, condensation and heat-recovery duties in industries such as:

• Petroleum refining

• Petrochemical processing

• Oil and gas processing

• Power and energy

• Chemical manufacturing

• Renewable and alternative fuels

• Marine and fuel-gas systems

• Industrial refrigeration

• Process heat recovery

Suitability for a particular industry does not automatically mean suitability for every process fluid. Each application requires technical evaluation.

Heating and Cooling Applications

DuroShell can be evaluated for liquid-to-liquid and other process heating or cooling duties where compact construction, welded containment and efficient heat transfer are important.

The design process should consider:

• Fluid composition

• Inlet and outlet temperatures

• Flow rates

• Operating and design pressures

• Allowable pressure drop

• Fouling tendency

• Corrosion risk

• Start-up and shutdown conditions

• Cleaning requirements

• Applicable pressure-vessel codes

Condensation Duties

Plate-and-shell heat exchangers may be used for selected condensation duties. Their plate geometry provides a compact heat-transfer area and can support effective temperature utilisation.

The required exchanger must be selected according to vapour composition, condensing temperature, cooling-medium conditions, pressure drop and the presence of non-condensable gases.

Industrial Heat-Recovery Applications

DuroShell may be considered where heat from a hot process stream can be transferred to a colder stream. Recovering available process heat can reduce the external heating or cooling requirement when supported by the plant’s operating conditions and energy analysis.

Potential heat-recovery benefits depend on:

• Available temperature difference

• Process-stream compatibility

• Heat availability and demand

• Operating schedules

• Fouling behaviour

• Pressure limitations

• Required temperature approach

• Economic feasibility

No energy-saving percentage should be promised without completing an application-specific thermal assessment.

DuroShell Versus a Shell-and-Tube Heat Exchanger

DuroShell uses a compact welded plate pack as its primary heat-transfer surface. A conventional shell-and-tube exchanger transfers heat through a bundle of tubes installed inside a shell.

The plate-and-shell arrangement can offer:

• A compact equipment footprint

• Efficient heat transfer

• Lower hold-up volume

• The possibility of close temperature approaches

• Gasket-free plate-pack construction

• Suitability for selected demanding process duties

A shell-and-tube exchanger may remain preferable where mechanical tube cleaning, very large flow passages or specific process and maintenance requirements govern the selection. The correct choice should be based on a technical comparison rather than equipment type alone.

Information Required to Select a DuroShell

For a meaningful DuroShell enquiry, please provide:

• Process-fluid names and compositions

• Flow rates

• Inlet temperatures

• Required outlet temperatures

• Operating pressures

• Design temperatures and pressures

• Maximum permissible pressure drop

• Fluid density and viscosity

• Solids content, if applicable

• Corrosion or material restrictions

• Fouling characteristics

• Required construction standards

• Plant location

• Available installation space

Safety data sheets and process specifications may be required when the application involves corrosive, hazardous or specialised fluids.

DuroShell Heat Exchanger Enquiries in Hyderabad and South India

Surya Sankara Trading supports customers in Hyderabad, Telangana and other South Indian locations with application discussions and product enquiries for Alfa Laval DuroShell plate-and-shell heat exchangers.

Our team can collect the preliminary process information and coordinate the enquiry for technical evaluation. The selected heat exchanger must match the application’s thermal duty, pressure, temperature, material and regulatory requirements.

Surya Sankara Trading does not recommend selecting a DuroShell model solely by pipe size or an existing exchanger’s external dimensions. Process data is necessary for proper equipment selection.

Why Contact Surya Sankara Trading?

• Authorised Distributor for Alfa Laval products

• Hyderabad-based industrial contact point

• Application-focused enquiry coordination

• Support for heating, cooling and heat-recovery discussions

• Assistance with product and documentation enquiries

• Support for customers in Telangana and other South Indian locations

Frequently Asked Questions About Alfa Laval DuroShell

What is an Alfa Laval DuroShell?

Alfa Laval DuroShell is a fully welded plate-and-shell heat exchanger designed for demanding industrial heat-transfer duties. It combines a welded plate pack with an outer pressure-containing shell.

Is DuroShell a plate heat exchanger or a shell-and-tube exchanger?

DuroShell is a plate-and-shell heat exchanger. It uses plates as its principal heat-transfer surface but houses the welded plate pack inside a shell.

Does the DuroShell heat exchanger contain plate gaskets?

The plate pack is gasket-free and welded. The complete equipment configuration and sealing arrangement depend on the selected design.

Where is DuroShell used?

DuroShell can be considered for demanding heating, cooling, condensation and heat-recovery applications in refining, petrochemical, chemical, energy, oil and gas, marine and other process industries.

Can DuroShell handle high-pressure applications?

DuroShell is designed for selected demanding pressure and temperature duties. The permissible limits depend on the exact model, materials and design conditions and must be confirmed during equipment selection.

Is DuroShell suitable for corrosive fluids?

It may be suitable for selected corrosive-media applications when constructed from compatible materials. Fluid composition, concentration, temperature and possible contaminants must be reviewed before material selection.

Can DuroShell be used for process heat recovery?

Yes, DuroShell can be evaluated for heat-recovery duties where compatible hot and cold streams are available. Expected recovery depends on temperatures, flow rates, pressure drop and process conditions.

What is the difference between DuroShell and Compabloc?

Both are welded plate heat-exchanger technologies, but their construction, plate geometry, configuration and application range differ. The appropriate technology should be selected using the process duty and operating conditions.

Is DuroShell suitable for thermal cycling?

DuroShell incorporates a specialised plate pattern and welded construction intended for demanding duties, including applications involving thermal or pressure fatigue. The exact operating cycle must still be evaluated during selection.

How do I select the correct DuroShell model?

Selection requires fluid properties, flow rates, inlet and outlet temperatures, operating and design pressures, pressure-drop limits, corrosion information and applicable construction standards.

Where can I enquire about DuroShell in Hyderabad?

Industrial customers can contact Surya Sankara Trading Pvt. Ltd. in Hyderabad for Alfa Laval DuroShell product enquiries and application discussions.

Is Surya Sankara Trading an Alfa Laval authorised distributor?

Yes. Surya Sankara Trading Pvt. Ltd. is an Authorised Distributor for Alfa Laval products.

Request a DuroShell Application Discussion

Contact Surya Sankara Trading with your process temperatures, flow rates, pressures, fluid details and required heat-transfer duty. Our team will review the information and coordinate the appropriate product enquiry.

Mobile: +91 97042 70101
Email: suryasankaratraders@gmail.com
Location: Hyderabad, Telangana

Request a DuroShell Quote