When you request a quotation or technical proposal, send the information that defines the boiler’s required output, operating conditions, fuel, site, emissions requirements, and project scope. Include the design duty and operating range, not just a target capacity: a supplier needs to understand what the boiler must produce and under which conditions. If a value is not confirmed, mark it as “to be confirmed” and provide an estimate or range rather than leaving it out. We use this information to assess the project basis, identify open technical questions, and prepare a proposal that can be compared with other offers.
Start with the required useful output and specify whether you need steam, hot water, or another heat-transfer arrangement. For a steam application, provide the required steam flow, pressure, temperature, and quality requirements where applicable. State whether the values are measured at the boiler outlet or at another process connection, and identify any downstream pressure reduction or heat-exchange equipment that affects the duty.
Make clear whether your stated capacity is continuous, maximum, standby, or a short-duration peak. Include the normal operating load and any minimum stable load you expect, but label these as project requirements rather than assumed boiler performance. For example, a request might list “50 t/h” as an illustrative steam-flow figure; the actual requirement must come from your process design. Also note planned operating hours, start-stop frequency, and seasonal or batch-related demand changes.
Tell the supplier how the boiler will be operated and what performance guarantees you want considered in the proposal. Relevant items may include boiler efficiency, auxiliary power consumption, turndown requirements, response to load changes, and availability expectations. Define the measurement method and operating conditions for any requested guarantee, since results can depend on fuel properties, ambient conditions, and the selected system boundary.
If you have a process heat balance, load profile, or existing equipment data, include it with the enquiry. Identify future capacity increases or fuel changes that could affect the design. This helps us distinguish current requirements from provisions you may want evaluated for a later phase.
Identify the primary fuel and every secondary or backup fuel you expect to use. For each fuel, provide a representative analysis and explain how much its properties vary between suppliers, seasons, or deliveries. Useful parameters include moisture, ash, volatile matter, fixed carbon, elemental composition, heating value, sulfur, and ash-fusion characteristics when available.
Specify whether laboratory results are reported on an as-received, dry, or another basis, and provide the analysis date and sample source if known. Include particle-size distribution, bulk density, and any handling concerns such as bridging, contamination, or inconsistent sizing. If you do not yet have a full analysis, send the available data and tell the supplier what remains unverified instead of presenting estimates as final values.
Units and reference conditions matter. For instance, fuel moisture may be reported as “35% as received,” while particle size may be described in millimetres; these are examples of data formats, not recommended design values. State the expected fuel consumption or supply quantity if known, and clarify whether the boiler must accommodate a range of blends or only a defined fuel specification.
Send the emissions limits that apply to your project and identify the authority, permit, or project specification from which they come. List each regulated parameter, such as particulate matter, sulfur oxides, nitrogen oxides, or carbon monoxide, as relevant to the site and fuel. Include the required units and measurement basis, such as dry or wet gas, reference oxygen content, and correction conditions, where the governing requirement specifies them.
Do not provide a limit without its context. An illustrative entry could be “particulate matter: 50 mg/Nm³ at the stated reference oxygen”; this is only an example of how to format a requirement and is not a universal limit or a design recommendation. Also tell the supplier whether emissions-control equipment, continuous monitoring, ash handling, wastewater management, or stack supply is included in your requested scope.
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Share the project location, elevation, ambient temperature range, humidity or weather considerations, and any site-specific seismic or wind criteria provided by your engineering team. Include available plot plans, building dimensions, access routes, foundation information, and height restrictions where these are known. Mention nearby equipment or operating facilities that may limit construction access, lifting, noise, or outage windows.
List available utilities and their connection conditions, including electrical supply, water, instrument air, and any fuel preparation or transport systems. State the required connection points and identify which party is expected to provide each interface. If site information is preliminary, label it clearly so that the proposal can distinguish confirmed inputs from assumptions.
Provide the project stage, target dates for proposal submission and order placement, expected delivery window, and planned commissioning period. A supplier can give a more useful schedule when the enquiry identifies whether engineering, permitting, civil works, and fuel-system design are already underway. Also describe whether the boiler is for a new plant, replacement, capacity expansion, or retrofit, because the installation interfaces may differ.
Identify the codes, regulations, and owner specifications that the project requires the supplier to follow. Avoid naming a standard from memory if you are unsure; share the relevant project documents or ask your engineering team to confirm the applicable edition and jurisdiction. State any inspection, quality documentation, material traceability, or third-party review requirements included in the contract basis.
Set out the supply boundary in practical terms. Specify whether you are requesting the boiler island only or a broader package that may include fuel feeding, combustion air systems, flue-gas treatment, ash handling, controls, pumps, piping, insulation, and commissioning support. Ask the supplier to identify inclusions, exclusions, and buyer-supplied items in the offer so you can compare proposals on a consistent basis.
List the documents and services you expect, such as general arrangement drawings, process diagrams, equipment data sheets, operating manuals, spare-parts recommendations, training, supervision, or commissioning assistance. Tell us the required document language, review process, and submission milestones if these are specified. For commercial evaluation, state the requested quotation validity, delivery terms, payment expectations, and whether you need pricing for optional items separately.
| Information group | What to provide | If information is not final |
|---|---|---|
| Boiler duty | Output, pressure, temperature, load range, and operating profile | Give a preliminary range and mark the design basis as provisional |
| Fuel | Fuel types, analysis, variability, particle size, and supply conditions | Send available test data and list missing analyses |
| Environment | Applicable emissions limits, units, reference conditions, and controls | Identify the permitting authority or confirm that limits are pending |
| Site and interfaces | Location, layout, utilities, connection points, and access constraints | Share preliminary drawings and note assumptions |
| Scope and schedule | Supply boundary, documentation, services, milestones, and commercial basis | Ask the supplier to separate options and identify schedule dependencies |
A common mistake is sending only a capacity figure without stating the required pressure, temperature, fuel basis, or operating profile. Another is providing a fuel name without an analysis, even though moisture, ash, and heating value can materially affect the evaluation. Buyers can also make offers difficult to compare by mixing confirmed requirements with assumptions or by leaving the supplier’s scope boundary undefined.
To avoid these problems, attach source documents and label each input as confirmed, estimated, or pending. Ask the supplier to list assumptions, exclusions, and information needed to finalize the technical proposal. When a requirement is negotiable, mark it as a preference rather than presenting it as a mandatory condition.
Before sending your enquiry, assemble a concise specification sheet, fuel analysis, site information, emissions requirements, and a clear scope list. We recommend asking each supplier to respond against the same duty, fuel basis, boundary conditions, and commercial assumptions. This makes technical differences and open items easier to review during bid evaluation.
At Genjux, we can review the information you provide, clarify missing inputs, and discuss the technical and supply scope for your CFB boiler project. Send your confirmed requirements together with any preliminary data, and identify which items still require engineering or permitting confirmation. The best next step is a structured technical discussion followed by a proposal that clearly records its design basis, assumptions, inclusions, and exclusions.
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