Products · Fired Equipment & Process Heaters
To establish the project design basis for “Hot Oil Heaters”, confirm “Hot-oil circuit and consumer duty” and its inputs: Provide heat-transfer fluid, consumer duty, circulation flow, supply/return temperatures, pressure drop and pump conditions. Final values, supply limits and acceptance criteria are recorded in approved engineering documents; no generic capacity or catalogue guarantee is assumed.
From project definition to delivery
Engineering of Hot Oil Heaters concentrates on thermal-fluid selection, supply and return temperatures, heater duty, circulation hydraulics, expansion and degassing, oxidation control, pump redundancy and user heat-load variation. 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 Hot Oil Heaters is defined from service data, design conditions, and battery limits. For this equipment, Hot-oil circuit and consumer duty and Fuel and process conditions must be completed in the datasheet and design documents; performance values and guarantees are set only after the project basis is approved.
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 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.
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
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.
Technical Datasheet
The table summarizes published examples from two distinct thermal-oil heater families; these are neither general standard limits nor Delham specifications or guarantees, and must not be combined into one rating.
| Parameter | Published value | Reference basis | Applicability / limit |
|---|---|---|---|
| General OH-series heating capacity | 50–15,000kW | Published range for the general OH family. | Spans multiple models, not one unit rating or turndown range. The source describes the OH series as non-pressurized and gives no numerical design pressure. |
| OH-series thermal-fluid operating temperature | Up to 300°C; 400°C on request | Published operating-temperature limit for the OH series; the higher value is by request. | 400 °C is not the default. Confirm film/bulk temperature, fluid compatibility/stability and circuit-component limits for the selected model and service. |
| Low-emission family heating capacity | 75–15,000kW | Separate published range for the low-emission family. | Spans models; do not merge it with the general OH family or read it as one-unit turndown. |
| Low-emission family design temperature | Up to 350°C | Published upper design-temperature value for this family. | Exact limit depends on the model, fluid and project conditions; it is not a Delham specification or guarantee. |
| Low-emission family pressure | Up to 10bar | Published family value; the source page does not state gauge/absolute basis. | Confirm pressure and basis from the exact model datasheet; this is neither a general code limit nor a Delham circuit design pressure. |
Delham Engineering
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.
