Block plate heat exchanger
HEXCBLOC
Welded metal joint
CLEANING ACCESSRemove side panels
Access to channels; the core stays welded.
Cleaning in place is also possible.HEXCBLOC
Fully Welded Block Heat Exchanger
Compact heat transfer with no interplate gaskets, engineered for demanding temperature, pressure and process-fluid conditions.
Engineered for new installations and replacement of existing welded block heat exchangers.
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MEET HEXCBLOC
What Is a Welded Block Heat Exchanger?
HEXCBLOC is PANSTAR’s fully welded plate heat exchanger. Corrugated metal plates form a compact block with separate channels for hot and cold fluids. Heat passes through the plates without mixing the two streams.
The laser-welded core has no interplate gaskets. Removable side panels provide access to both fluid sides for inspection and mechanical cleaning.
Explore the TechnologyCOMPARE HEAT EXCHANGERS
HEXCBLOC vs Gasketed Plate Heat Exchanger
Compare welded channels and plate gaskets, design limits and cleaning access.
VS
Gasketed plate heat exchanger
Plate-and-frame design · Example configuration
Compressed elastomer seal
CLEANING ACCESSOpen & separate plates
Access to individual plate surfaces.
Cleaning in place is also possible.COMPARE FOOTPRINT & ACCESS
HEXCBLOC vs Shell & Tube Heat Exchanger
Compare compact block construction, equipment footprint and the space needed for inspection and cleaning.
Block plate heat exchanger
HEXCBLOC
Compact footprint
Side-panel access
MAINTENANCE ACCESSRemove panels. Keep the core in place.
Access both fluid sides for inspection and suitable mechanical cleaning.
VS
Shell-and-tube heat exchanger
Shell-and-tube design
Longer installed envelope
Axial bundle withdrawal
MAINTENANCE ACCESSOpen heads. Reserve pull space.
Tube-side access through heads; bundle withdrawal applies to removable-bundle designs.
APPLICATIONS
Designed for Severe Process Duties
Condensation & Vapor Recovery
Process vapour · Steam condensation · Solvent recovery · Overhead condensers
Evaporation & Reboiling
Reboilers · Process evaporation · Distillation duties · Thermosiphon service
Process Heating & Heat Recovery
Liquid-to-liquid · Process heating & cooling · Heat recovery · Energy recovery
Typical industries: Chemical · Petrochemical · Refining · Energy · Pulp & Paper
View applications & selection guidance
Oil refining
Typical applications
- Crude-oil preheating
- Sour-water stripping
- FCC overhead systems
Recover heat from hot process streams in a compact unit. Welded plate channels reduce reliance on elastomer gaskets; removable panels provide cleaning access.
Petrochemicals
Typical applications
- Ethylene quench-water circuits
- Aromatics separation
- Distillation condensers & reboilers
Compact heat-transfer area supports capacity upgrades in crowded process units. Flow arrangement and pressure drop are selected for each liquid or vapour duty.
Chemicals & specialty chemicals
Typical applications
- Solvent distillation & recovery
- Alcohol stripping
- Selected chlor-alkali gas cooling
Consider welded channels where process temperature or chemical compatibility limits plate gaskets. Plate alloy and panel seals must match the fluid composition and concentration.
PRODUCT RANGE
HEXCBLOC.
Seven sizes for your process.
Compare the model sizes, then define the plate pack and connections around your process duty.
| Model | Maximum dimensions (A × A × B), mm | Standard pressure, bar | Temperature range, °C |
|---|---|---|---|
| HEXCBLOC 15 ↗ | 280 × 280 × 540 | FV–32 | −40–300 |
| HEXCBLOC 20 ↗ | 430 × 430 × 730 | FV–32 | −40–300 |
| HEXCBLOC 30 ↗ | 500 × 500 × 1,070 | FV–32 | −40–300 |
| HEXCBLOC 40 ↗ | 600 × 600 × 1,400 | FV–32 | −40–300 |
| HEXCBLOC 50 ↗ | 840 × 840 × 2,050 | FV–32 | −40–300 |
| HEXCBLOC 75 ↗ | 1,240 × 1,240 × 3,600 | FV–32 | −40–300 |
| HEXCBLOC 120 ↗ | 2,190 × 2,190 × 3,500 | FV–32 | −40–300 |
FV = full vacuum · A × A × B = maximum overall dimensions
Plate materials
AISI 304L / 316L · Titanium · 904L · 254 SMO · Alloys selected for the medium
Panel seals
Graphite / PTFE, selected for operating conditions.
REPLACEMENT SOLUTIONS
Replacing an Existing Welded Block Heat Exchanger?
Review a replacement against the existing duty, heat-transfer area, installation dimensions, nozzle arrangement, design conditions and materials.
Existing equipment
Datasheet · Nameplate · GA drawing · Heat-transfer area
Process & installation
Operating conditions · Nozzle locations · Overall dimensions · Material requirements
Core replacement, complete units & existing model references
Compabloc plate pack
Review the welded core, materials and interfaces with the retained casing. Retained components require inspection.
Plate-pack assessmentCompabloc complete unit
Match duty, design conditions, nozzle layout, supports and service space.
Compabloc replacement engineeringGEA / Kelvion K°Bloc
Complete-unit alternatives only. K°Bloc core interchange is not offered.
Complete-unit assessmentHEAT EXCHANGER SELECTION
Request a Thermal Selection
PROJECT REQUIREMENTS
Project Documentation
Technical datasheetGeneral arrangement drawingOperating documentationProject inspection requirements
Project planning & cleaning questions
Can I specify a unit for a new project?
Yes. Share the hot- and cold-side conditions, heat load and site requirements. You can start with a process datasheet or a description of the duty; an existing equipment model is optional.
How is the heat exchanger cleaned?
The removable panels provide access for inspection and mechanical cleaning. A suitable cleaning method and interval depend on the deposits, fluid and operating instructions. Space for maintenance should be allowed in the layout.
Send Your Process Data for Heat Exchanger Selection
Share fluids, flow rates, temperatures, pressures and allowable pressure drops for engineering review and selection of a suitable HEXCBLOC configuration.