Products · Fired Equipment & Process Heaters

Electric Process Heaters

To establish the project design basis for “Electric Process Heaters”, confirm “Electrical supply and process load” and its inputs: Specify available power, voltage/phase/frequency, fluid flow and properties, inlet/outlet temperatures, load control and site limits. Final values, supply limits and acceptance criteria are recorded in approved engineering documents; no generic capacity or catalogue guarantee is assumed.

Electric Process Heaters

From project definition to delivery

Engineering intent and design approach

Engineering of Electric Process Heaters concentrates on electrical heat input, element watt density, sheath metallurgy, surface temperature, flow assurance, hazardous-area protection, staged control and low-flow trip philosophy. The selected configuration is verified against normal, minimum, start-up, shutdown and credible upset cases, then checked for operability, maintainability, energy use, process safety and site interfaces before the design is frozen.

Rated capacity, minimum stable load, feed envelope, inlet and outlet conditions, product specification, start-up and shutdown cases, design life and acceptance criteria are agreed before equipment definition is frozen. Electrical basis also fixes voltage, phase, element watt density, sheath metallurgy, surface-temperature limits, hazardous-area classification and staged control philosophy.

Mechanical design and materials

Materials, corrosion allowance, sour-service requirements, piping classes, nozzle design, insulation, coating, supports and maintenance access are coordinated with the actual process conditions and project code hierarchy.

Control, safeguarding and operation

Control philosophy, alarms and trips, cause-and-effect logic, interlocks, start-up and shutdown sequences, safe depressurization and operator access are developed consistently from the P&IDs through functional testing.

Layout, utilities and interfaces

Battery limits, tie-in points, structural loads, cabling, instrumentation, drains, vents, access routes, lifting envelopes and shipping constraints are controlled through coordinated models and interface drawings.

From project definition to delivery

Clear inputs and contract-ready outputs

Proposal quality depends on complete input data and an explicit acceptance basis. The following lists provide a practical starting point and are completed during technical clarification.

Recommended RFQ information

  • “Power supply and load control”: Provide voltage/phase/frequency, available power, load-control method, connection and supply conditions from site data.
  • “Elements, sheath and temperature monitoring”: Specify element type/arrangement, sheath material, temperature-sensing points, service temperature limits and replacement access.
  • Site and ambient data, hazardous-area classification and HSE requirements
  • Available utilities with pressure, temperature and capacity
  • Applicable standards, materials, supply limits and owner document formats

Typical engineering and supply deliverables

  • Equipment datasheet and design basis for “Electric Process Heaters”, with service-relevant calculations where included in the supply scope.
  • PFDs, P&IDs, equipment list and technical datasheets
  • Control philosophy, cause and effect, I/O definition and utility summary
  • Plot plan, 3D model, foundation loads and fabrication drawings
  • Inspection and test plans, FAT records, final data book and commissioning support

Technical Datasheet

Technical Datasheet — Electric Process Heaters

These published examples cover distinct electric-heater families and one application case. Do not combine their pressure, temperature and power endpoints as one heater rating.

Published equipment-family or project data only; not a universal standard limit or Delham rating/guarantee.
ParameterPublished valueReference basisApplicability / limit
Dry-gas heater module power12–31.2 kWPublished power range for one indirect electric dry-gas-seal heater family.Specific to that module family; multiple modules may be connected for greater duty.
Dry-gas module design envelope−50 to 300 °C; up to 6,800 psiPublished design-temperature range and standard-offering pressure capability for the same sealed-gas product family.Model-specific design values; confirm pressure-boundary code, process conditions, element compatibility and relief design.
High-temperature gas/liquid exchanger exampleUp to 650 °CPublished maximum design temperature for a separate electric heat-exchanger product family.Official product-page and specification-sheet pressure figures conflict (300 vs 3,000 psi); no pressure rating is asserted pending confirmation of the current model/revision.
Single process application rating101 kW; outlet 340 °C at 450 psigPublished methane/hydrogen preheating case study for a particular heater system.One duty point, not a standard range; gas composition, flow, temperature rise and allowable pressure drop must be re-sized.

Published technical source

Delham Engineering

Define the scope around real project data

Send the available process data, battery limits and expected document list for a technical proposal. The engineering team will identify missing information through a structured clarification register.

Submit technical enquiry