Products · Boilers & Heat Recovery

Fire-Tube Boilers

To establish the project design basis for “Fire-Tube Boilers”, confirm “Steam, feedwater and boiler fuel” and its inputs: Provide steam flow and pressure/temperature, feedwater quality, fuel type/conditions, condensate return and load cases. Final values, supply limits and acceptance criteria are recorded in approved engineering documents; no generic capacity or catalogue guarantee is assumed.

Fire-Tube Boilers

From project definition to delivery

Engineering intent and design approach

Engineering of Fire-Tube Boilers concentrates on steam pressure and temperature, circulation, furnace or process-gas duty, feed-water quality, blowdown, pressure-part design, emissions, control range and operating flexibility. 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.

The design basis for Fire-Tube Boilers is defined from service data, design conditions, and battery limits. For this equipment, Steam, feedwater and boiler fuel and Feed and thermal conditions must be completed in the datasheet and design documents; performance values and guarantees are set only after the project basis is approved.

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

  • “Feed and thermal conditions”: Record feedwater/process-gas quality/flow, fuel, hot-gas conditions, inlet/outlet temperature and fouling/corrosion.
  • “Heat-transfer and pressure parts”: Specify circulation, heat-transfer surface, coils/tubes, drum if needed, economizer/superheater and cleaning strategy.
  • 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 “Fire-Tube Boilers”, 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 — Fire-Tube Boilers

The figures summarize a published fire-tube boiler family and its stated fuel/configuration basis. They are not universal boiler limits, a code range, or a Delham rating.

Published equipment-family or project data only; not a universal standard limit or Delham rating/guarantee.
ParameterPublished valueReference basisApplicability / limit
Published boiler-size range15–700 boiler hpPublished range across one three-pass fire-tube product family.Boiler horsepower is a capacity convention; confirm the published rating basis and steam/hot-water model before converting to process duty.
Published efficiency range83–87%Stated for firing natural gas or LP gas in that product family.The public range is fuel- and configuration-specific; verify whether the quoted efficiency is combustion or thermal efficiency and the test conditions.
Standard pressure configuration example15 psig steam / 30 psig hot waterStandard configurations listed for the cited model family; higher-pressure options may exist.Not a universal code maximum or design-pressure statement for all boilers; select the construction code and certified model for the project.

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