Precision equipment for chemical processing.

Tubular and fixed-bed reactors, fluid-bed reactors, jacketed reactors, ASME Section VIII pressure vessels, process and mixing vessels, fractionation and distillation columns, reboilers, overhead condensers, shell-and-tube heat exchangers, replacement exchangers and tube bundles, falling-film and forced-circulation evaporators, scrubbers, cyclones, adsorber vessels, and storage and process tanks. Harris Thermal fabricates equipment for integration into your process; it does not supply the process design or the complete plant.

Carbon steel, stainless steels including 304L and 316L, duplex stainless, AL-6XN, Hastelloy, Inconel, Monel, titanium and other qualified specialty materials. For applications requiring corrosion-resistant wetted surfaces with a structural carbon-steel backing, Harris Thermal can fabricate equipment using customer-specified clad or explosion-bonded materials where appropriate to the design and fabrication requirements.

Lethal service is a designation that comes from the process fluid, not from the fabricator. ASME Section VIII, Division 1 applies additional requirements — including full radiography of specified joints, post-weld heat treatment where required, and tighter joint-efficiency rules — to vessels containing substances considered lethal in low concentrations. Whether a given service meets that definition is determined by the customer, the EPC or the process-safety authority against the applicable code and jurisdictional requirements, not by us. Where a specification calls for it, Harris Thermal fabricates to the applicable ASME Section VIII lethal-service requirements, with the weld procedures, examination and documentation that designation carries. If you are unsure whether your service qualifies, that determination should be made with your process-safety team before design is fixed.

Material selection follows the specified process conditions: chemistry, concentration, operating temperature and pressure, contaminants, any required corrosion allowance or corrosion rate, and whether the aggressive stream sees the shell side or the tube side. Cleanability and fouling behaviour matter where the service demands it. Harris Thermal does not independently select process metallurgy — that comes from your process data and corrosion requirements, and we translate it into practical exchanger and vessel construction: compatible tubes, tubesheets, shell, heads, internals and weld filler, in stainless steels, duplex and super duplex, nickel alloys, titanium or clad construction as the service requires. On some exchanger designs the more corrosive stream is routed to the tube side, because tubes and tubesheets can be built from a higher alloy without taking the entire shell to that alloy — but that is an application-dependent option, not a universal design rule, and it depends on pressure, temperature, fouling and cleaning access. See the materials we fabricate.

Yes. Tubular and fixed-bed reactors, fluid-bed reactors and jacketed reactors, and fractionation and distillation columns including column internals, reboilers and overhead condensers. Lethal service and cyclic service designs per ASME Section VIII, Division 1 are supported within qualified project scope, as are heavy-wall shells and large-diameter column sections.