Get Instant Quote ->
Single-Drum · Chain Grate Stoker · Solid Fuel

Coal Fired Steam Boiler for Fuel-Cost-Driven Industrial Operations

EPCB coal fired steam boilers deliver 1–20 T/H process steam through a single-drum chain grate stoker design at 0.7–1.6 MPa. Thermal efficiency ranges from 78.1% at 1 T/H to 83.1% at 15–20 T/H — lower than gas or oil alternatives, but viable where local coal supply is stable and fuel cost economics favor solid fuel over gas or oil infrastructure. Before specifying coal-fired equipment, two prerequisites must be confirmed at your site: that a coal installation permit is obtainable under local regulations, and that the site can accommodate coal storage, ash handling, and a compliant chimney stack.

Request a Custom Quote Check Site Eligibility
1–20
Steam Capacity
T/H
0.7–1.6
Rated Pressure
MPa
78–83%
Thermal Efficiency
By capacity model
4
Certification Schemes
ISO · CE · EAC · SGS
Market Fit & Regulatory Scope

Can You Install a Coal Fired Boiler at Your Site?

The first question is not capacity or pressure — it is whether a new coal-fired industrial boiler installation is permissible at your location and whether your site can support the physical infrastructure it requires. Answering both before ordering saves the most disruptive outcome in cross-border coal boiler procurement: discovering after manufacturing that the site or regulatory environment cannot accommodate what was built.

Conditions Where Coal Fired Equipment Is Viable

  • Local coal supply is stable, consistently available at the required quality grade, and cost-competitive relative to gas or oil per unit of heat output at your location
  • A coal-fired industrial boiler installation permit is obtainable under local regulations — confirm with authorities before issuing the purchase order
  • Site has available space for coal storage, a feed conveying system, ash and slag disposal, and a chimney of adequate height to meet local emissions dispersion requirements
  • Local SO₂, NOx, and particulate emission limits can be met with available dust collection and flue gas treatment equipment
  • Gas pipeline access is unavailable or the infrastructure investment required to switch to gas or oil exceeds the fuel cost savings over the asset lifetime

Conditions Where Coal Is Not the Right Choice

  • Installation site is subject to a prohibition or mandatory phaseout of new coal-fired combustion equipment — confirm local permitting status before proceeding
  • Site falls under medium combustion plant regulations or industrial emissions rules that set SO₂, NOx, or particulate limits the available coal grade and emission-control configuration cannot meet
  • Available site footprint cannot accommodate coal storage, ash handling, and a compliant chimney stack — these are dealbreakers regardless of fuel price economics
  • Local gas supply is confirmed and economically viable — EPCB gas fired boiler configurations typically achieve thermal efficiency of ≥92%, reducing operating cost relative to this coal configuration
  • Steam demand is intermittent or low-volume — the site infrastructure investment for coal is harder to justify at load profiles below 1 T/H continuous

On EU and regulated market applicability. In the EU and other regulated markets, coal-fired industrial boiler projects may fall under medium combustion plant rules, industrial emissions directives, national permitting requirements, and local air-quality standards. Whether installation is permissible depends on rated thermal input, fuel sulfur content, emission-control configuration, and site-specific permit approvals — not a blanket product characteristic. Confirm applicable permitting requirements with local authorities before the purchase order is issued. If coal installation is not permissible at your location, we can advise on gas fired or oil fired alternatives.

Sizing & Applications

Steam Capacity, Pressure, and Industry Application

The single-drum chain grate configuration serves chemical processing, textile dyeing, paper manufacturing, food processing, building materials, and district heating where coal is the primary available fuel and continuous steam demand falls within 1–20 T/H. Pressure availability varies by capacity — 0.7 MPa is only available on 1–2 T/H models; units from 4 T/H upward start at 1.25 MPa.

Steam Load Typical Application Available Pressure
1 T/H Small food processing, laundry, light industrial heating 0.7 / 1.25 MPa
2 T/H Food processing, pharmaceutical pilot lines, small textile operations 0.7 / 1.25 / 1.6 MPa
4–6 T/H Textile dyeing, paper mills, mid-size chemical and food plants 1.25 / 1.6 MPa
8–15 T/H Large chemical processing, heavy textile, large paper mills, district heating 1.25 / 1.6 MPa
20 T/H Heavy industrial, multi-process facilities 1.25 / 1.6 MPa

Above 20 T/H or 1.6 MPa? Water tube configurations apply and require a separate engineering review. If your demand sits near the 20 T/H boundary, share a peak load profile that distinguishes continuous demand from high-draw cycles — not an average figure.

Technical Data

Specifications of EPCB Coal Fired Steam Boiler

Single-drum chain grate stoker coal fired steam boiler. Thermal efficiency and coal consumption are model-specific and calculated at reference conditions — actual site values depend on your coal grade. Pressure and temperature options vary by capacity as shown.

Cross-section diagram of single-drum chain grate coal fired steam boiler

Single-Drum Chain Grate Stoker Construction

Coal is fed onto a continuously moving chain grate that carries it through the combustion zone at a controlled rate. Air is supplied through the grate from below, with distribution adjusted to the coal grade and steam demand. Combustion gases pass through the fire tubes in the boiler shell, transferring heat to the surrounding water.

The single-drum (DZL) layout is factory-assembled for the full 1–20 T/H range. Units from 8 T/H upward are shipped in two sections — boiler body and chain grate assembly — for transport compliance. On-site reassembly time must be factored into the commissioning schedule from the outset.

Rated Capacity (t/h) 12468 10121520
Rated Steam Pressure (MPa) 0.7 / 1.25 0.7 / 1.25 / 1.6 1.25 / 1.6
Rated Steam Temperature (℃) 170 / 194 170 / 194 / 204 194 / 204
Feedwater Temperature (℃) [1] 20
Thermal Efficiency (%) [2] 78.180.282.382.582.5 82.982.983.183.1
Body Heating Area (m²) 23.048.796.3148.2174.4 226.2276.0374.5669.0
Coal Consumption (kg/h) [3] 101.8198.3347.7520.4693.8 863.11,035.71,291.51,722.0
Length (mm) 4,6005,8006,7007,0007,300 7,6007,6008,5009,500
Width (mm) 1,9002,6002,7003,0003,000 3,2003,2003,4003,800
Height (mm) [4] 2,9003,5003,5003,5003,500 3,5003,5003,5007,100
Shipping Weight — Body / Grate (ton) [5] 182230.140 21 / 1423 / 1723 / 1921 / 2425 / 24

[1] Feedwater temperature 20 ℃ is the rated design basis. Industrial systems equipped with economizers or feed heating may operate at higher feedwater temperatures — confirm with engineering if your system differs.
[2] Thermal efficiency measured at rated load, feedwater 20 ℃, and reference coal lower heating value (LHV) — confirm the reference LHV figure with our engineering team. Actual efficiency varies with coal grade, ash and moisture content, load rate, and emission-control configuration.
[3] Coal consumption calculated at the same reference LHV. Actual site consumption depends on your coal's calorific value, which varies by source and grade — site-specific consumption is confirmed during engineering scoping once coal quality data is provided.
[4] The 20 T/H model requires 7,100 mm building clearance height. Confirm available headroom before finalising installation layout.
[5] From 8 T/H upward, the unit ships in two sections: boiler body / chain grate assembly. On-site reassembly must be factored into the commissioning schedule.

Sample Configuration Reference

10 T/H single-drum chain grate coal fired steam boiler for a textile dyeing facility. Rated pressure 1.25 MPa, bituminous coal at approximately 5,500 kcal/kg LHV, bag filter dust collection sized to local particulate emission limit, integrated economizer, PLC combustion control, factory hydraulic pressure test, and pre-shipment site readiness checklist. Contact our engineering team to discuss a configuration matched to your coal grade, emission requirements, and operating schedule.

Fuel Compatibility

Coal Type, Quality Data, and Chain Grate Matching

The chain grate stoker requires coal that meets specific particle size, calorific value, ash content, and moisture parameters. Not all coal grades feed, combust, and de-ash reliably at the same grate speed and air distribution settings — compatibility must be confirmed against your specific coal source and grade before the combustion system is configured.

Best Compatibility
Bituminous Coal

Moderate ash content and consistent particle sizing make bituminous coal the most compatible fuel for standard chain grate operation. Stable ignition, predictable grate speed, and manageable ash removal make it the reference fuel type for this configuration.

Requires Adjustment
Anthracite

Higher ignition temperature and lower volatile matter require adjusted grate speed and air supply settings. Compatibility is possible but must be confirmed against your specific coal analysis before the combustion system is configured — do not assume standard settings apply.

Confirm at Inquiry
Lignite / High-Moisture Grades

High moisture and lower calorific value affect combustion stability and actual fuel consumption significantly. Suitability depends on your source's moisture percentage and LHV — provide a coal quality analysis at inquiry for engineering confirmation.

A mistake we see often. Buyers assume locally sourced coal is compatible without providing a quality analysis. When coal falls outside the grate's design window, the result is clinker formation, uneven steam pressure, and accelerated grate wear that shortens service intervals. We require the six inputs in the table below as standard before grate configuration is finalised.

Input Required Unit Why It Matters for Chain Grate Configuration
Calorific value (LHV) kcal/kg or MJ/kg Sets the basis for site-specific coal consumption calculation; reference figures in the spec table will not match your actual source without this
Ash content % Determines ash handling system sizing and grate wear rate — high-ash coals require larger ash disposal capacity and shorter grate service intervals
Moisture content % Affects ignition stability and actual heat output; high-moisture coals reduce effective calorific value and may require adjusted combustion air settings
Volatile matter % Determines combustion air volume and grate speed setting; low volatile matter (anthracite) requires different air staging than high volatile matter bituminous coal
Sulfur content % Directly determines SO₂ output level; required to assess whether flue gas desulfurisation equipment is needed to meet your site's SO₂ emission limit
Particle size range mm Must be compatible with the chain grate feed mechanism; oversized or undersized coal affects feeding consistency and combustion uniformity

Have your coal quality analysis ready?

Share all six inputs alongside your steam capacity, operating pressure, and site location. We will confirm grate compatibility, site-specific coal consumption, and the correct emissions system configuration before scoping begins.

Share Coal Data
Site Infrastructure & Emissions

Site Prerequisites and Emissions System Configuration

Coal fired boiler installations require infrastructure that gas or oil installations do not. These must be assessed and confirmed before the purchase order is issued. The emissions system — dust collection, SO₂ control, and NOx configuration — is part of the full system specification, not an afterthought.

Coal Storage & Feed Conveying

A covered storage area sized to your operating schedule, plus a feed conveying system from storage to the boiler inlet. Required capacity depends on daily coal consumption and your supply delivery frequency — confirm available footprint during site assessment.

Ash & Slag Disposal System

Chain grate operation produces continuous ash and slag output at the grate discharge end. An ash collection and disposal system must be sized to the coal's ash content and operating schedule. Manual and automated de-ashing configurations are available — confirm requirement at inquiry.

Chimney Stack Height

Stack height must satisfy local emissions dispersion requirements for SO₂, NOx, and particulate matter at the installation boundary. Minimum height depends on boiler capacity, fuel sulfur content, and local ambient air quality standards — confirm with local authorities before finalising plant layout.

Particulate Matter — Dust Collection

Dust collection is required on all installations. Configuration — cyclone separator, bag filter, or electrostatic precipitator — is specified to your local PM emission limit and coal ash content. It is part of the full system we configure and supply, not a default package item. Confirm your local PM threshold at inquiry.

SO₂ — Sulfur Content Dependent

SO₂ output is directly proportional to your coal's sulfur content. Flue gas desulfurisation equipment may be required depending on coal grade and local SO₂ limit. Provide coal sulfur percentage in your quality analysis so we can assess compliance requirements for your installation site.

NOx — Combustion Configuration

NOx levels depend on combustion temperature and air staging. Low-NOx combustion configurations are available where local regulations require them. Confirm the applicable NOx threshold for your installation site during engineering scoping so the correct air staging is designed in from the start.

Why EPCB

Engineering & Operating Advantages

Over the lifetime of an industrial coal fired steam boiler, grate reliability, combustion consistency, integrated auxiliary equipment, and documentation quality are the four factors that most directly determine total cost of ownership and operational uptime.

Chain grate stoker mechanism inside a coal fired steam boiler
01

Chain Grate Stoker — Continuous, Controlled Combustion

The continuously moving chain grate feeds coal through the combustion zone at a controlled rate matched to the coal grade and steam demand. Consistent grate speed and air distribution produce stable combustion and even steam pressure — reducing the unburned carbon loss that undermines efficiency in less controlled stoker designs.

PLC control panel for coal feed air supply and steam pressure monitoring
02

PLC Automatic Operation — Consistent Across Shifts

PLC-based combustion management controls grate speed, air supply, and steam pressure automatically. In facilities operating continuous multi-shift schedules, automatic control reduces staffing requirements for boiler operation and maintains consistent steam output regardless of shift — reducing the operator-dependent efficiency variability common in manually adjusted stoker systems.

Dust collector and auxiliary emissions equipment for coal fired boiler system
03

Integrated Auxiliary Equipment from Single Source

EPCB supplies the chain grate, dust collector, and economizer as part of the configured system — not as third-party components sourced separately. Single-source supply means combustion, heat recovery, and emissions control are specified and tested as an integrated unit before dispatch, reducing on-site integration risk and responsibility gaps between equipment suppliers.

Factory pressure test and documentation package for EPCB coal steam boiler
04

Factory Pressure-Tested with Complete Documentation

Every unit is hydraulically tested at rated working pressure before dispatch. The documentation package — factory test report, technical drawings, operation manual, applicable certification documents — is assembled before shipment. For coal-fired equipment, some destination markets require environmental compliance documentation in addition to standard boiler certification; confirm these requirements at inquiry so they can be prepared without delaying dispatch.

Compliance

Certifications: Coverage Scope & How to Verify

Certification coverage depends on the destination market, pressure rating, and order specification. ISO 9001 refers to EPCB's manufacturing quality management system; CE/PED, EAC conformity, and the SGS supplier assessment apply to specific configurations and must be confirmed against your exact model, rated pressure, and contract terms before order confirmation.

ISO 9001 quality management certificate for EPCB boiler manufacturing
ISO 9001 — Quality Management System
SGS boiler supplier assessment certificate for EPCB industrial boiler
SGS Boiler Supplier Certificate
CE PED declaration document for eligible coal fired steam boiler configuration
CE / PED — Eligible EEA Configurations
EAC conformity certificate for boiler export to Eurasian Economic Union markets
EAC — Applicable EAEU Markets

What each scheme covers. ISO 9001 certifies EPCB's quality management system — it is not a product compliance certificate. CE/PED conformity is available for eligible pressure equipment configurations destined for the European Economic Area; request the Declaration of Conformity and confirm the model and rated pressure match your specification. EAC conformity documentation can be prepared for applicable Eurasian Economic Union market configurations. The SGS certificate reflects an independent supplier assessment of EPCB's manufacturing operations.

For Southeast Asian, South Asian, Middle Eastern, and African markets, import registration and environmental compliance requirements vary by country — and may include steps beyond standard boiler certification. Confirm all applicable local requirements before issuing the purchase order. Third-party inspection by Bureau Veritas, SGS, or TÜV can be coordinated before dispatch — specify this in your initial inquiry.

Procurement Workflow

Delivery Process & What Affects Lead Time

Every custom coal fired steam boiler from EPCB moves through seven defined stages. Client sign-off on engineering drawings occurs before manufacturing begins — changes after that point affect both lead time and cost.

1
Requirements, Coal Quality & Site Assessment

Establish steam capacity, pressure, coal quality data (calorific value, ash, moisture, volatile matter, sulfur, particle size), site dimensions, local emissions limits, and permit status. All inputs required before grate configuration and emissions system selection begin.

2
Capacity, Grate & Emissions System Configuration

Match boiler model to confirmed peak load. Configure chain grate speed and air distribution to the coal grade. Specify dust collection and SO₂/NOx control equipment to the destination market's emissions framework.

3
Engineering Drawing Approval Client Sign-off

Detailed drawings issued for client review and written approval. Site preparation — coal storage, ash handling, chimney installation — should proceed in parallel once drawings are approved, not after the boiler arrives.

4
Manufacturing

Lead time depends on boiler capacity, customization depth, and order queue at confirmation. Establish actual lead times during the scoping call — not from catalogue descriptions.

5
Factory Hydraulic Pressure Testing

Each unit tested at rated working pressure. Factory test report issued and included in the documentation package dispatched with the unit.

6
Third-Party Inspection Where Required

Bureau Veritas, SGS, or TÜV inspection before dispatch where the destination market or project specification requires it. Specify at inquiry — not the week before shipment.

7
On-Site Commissioning Guidance

Technical support for installation, on-site reassembly of units from 8 T/H upward, and commissioning. Reassembly time for two-section units must be factored into the commissioning schedule from the outset.

Where schedule delays actually occur. In cross-border coal boiler projects, the delays we encounter most consistently are not in manufacturing — they occur because site preparation for coal storage, ash handling, and chimney installation is treated as something to complete after the boiler ships rather than in parallel with it. We include a site readiness checklist in the scoping output to make the installation critical path visible before manufacturing begins.

Inquiry Inputs

What to Confirm Before Requesting a Quote

An accurate custom quotation for an industrial coal fired boiler is only possible after eight inputs are confirmed. Without them, any price or lead-time figure is conditional and may shift once engineering begins.

01
Steam Capacity (T/H) — Peak Load

Based on peak production load, not average. Oversizing by more than 25–30% forces inefficient part-load cycling; undersizing causes pressure instability during high-draw cycles.

02
Operating Pressure (MPa)

0.7 MPa is only available for 1–2 T/H models. Units from 4 T/H upward start at 1.25 MPa — confirm your process requirement before scoping.

03
Coal Quality Analysis — Six Parameters

Calorific value (LHV), ash content, moisture content, volatile matter, sulfur content, and particle size range. All six required before grate configuration and site-specific consumption can be confirmed.

04
Site Dimensions & Infrastructure

Available footprint for boiler body, coal storage, ash handling, and chimney location. The 20 T/H model requires 7,100 mm building clearance height — confirm available headroom before finalising model selection.

05
Local Emissions Limits

PM, SO₂, and NOx thresholds applicable to your installation site. Required to specify the correct dust collection and flue gas treatment configuration and confirm project viability in your market.

06
Installation Permit Status

Confirm whether a coal-fired boiler installation permit has been obtained or is obtainable at your site. Permit timelines directly affect the commissioning date and determine whether the project can proceed on coal-fired equipment.

07
Feedwater Quality

Hardness, dissolved oxygen, and pH. Water treatment equipment may need to be specified alongside the boiler if local supply water falls outside acceptable parameters for the rated operating pressure.

08
Destination Country & Certification

Confirm import registration requirements and any environmental compliance documentation required at your destination — coal-fired equipment may face additional local approval steps beyond standard boiler certification.

FAQ

Frequently Asked Questions

Does the chain grate stoker work with any type of coal?

Not without configuration. Bituminous coal with consistent particle sizing and moderate ash content is generally the most compatible fuel for standard chain grate operation. Anthracite and high-moisture or high-ash coals require adjusted grate speed and air settings — compatibility depends on your specific coal grade. Provide a coal quality analysis covering calorific value, ash content, moisture, volatile matter, sulfur content, and particle size during scoping so we can confirm the correct grate configuration before manufacturing begins.

Why is thermal efficiency lower than gas or oil fired boilers?

Coal combustion produces more residual carbon in ash and more heat loss through flue gas than gas or oil, which limits achievable thermal efficiency at comparable capacity. This boiler ranges from 78.1% at 1 T/H to 83.1% at 15–20 T/H. Buyers select coal-fired equipment where local coal fuel costs over the operating period offset the efficiency gap — that economic case depends on your local fuel prices and supply reliability, both of which should be part of your selection assessment before a fuel type is chosen.

What dust collection equipment is required, and is it included as standard?

Dust collection — cyclone separator, bag filter, or electrostatic precipitator — is specified based on your local particulate emission limit and the coal type being burned. It is not included as a default package item but is part of the full system we configure and supply during engineering scoping. Confirm your local particulate emission threshold at inquiry so we can recommend and size the correct configuration from the start.

Can I still order this boiler if my market has clean energy or emissions regulations?

That depends on the specific regulations at your installation location. In the EU and other regulated markets, coal-fired projects may fall under medium combustion plant rules, industrial emissions directives, or local permitting requirements — whether installation is permissible depends on rated thermal input, fuel sulfur content, emission-control configuration, and site-specific permit approvals. We recommend confirming your site's permitting status before the purchase order is issued. If local regulations do not permit a new coal installation, we can advise on gas or oil alternatives based on your steam requirements.

What documentation is provided for customs clearance and environmental compliance?

Standard documentation includes the factory hydraulic test report, technical drawings, operation and maintenance manual, and applicable certification documents for your order specification. For markets requiring third-party inspection, a Bureau Veritas, SGS, or TÜV inspection report is issued before dispatch. For coal-fired equipment specifically, some destination markets require additional import permits or environmental compliance documentation beyond standard boiler certification — confirm all applicable requirements in your destination country before issuing the purchase order, as these cannot be resolved by manufacturer documentation alone.

Before Design Begins

Confirm Site and Fuel Conditions First

Whether a coal fired steam boiler is the right choice for your facility depends on variables beyond capacity and pressure: coal supply quality and consistency at your source, site readiness for coal storage and ash handling, local emissions limits and permit requirements, and whether fuel cost economics over your expected operating period justify the choice relative to gas or oil.

In cross-border coal boiler projects, the schedule delays we encounter most consistently are not in manufacturing — they occur because site preparation is treated as something to complete after the boiler ships rather than in parallel with it. We include a site readiness checklist in the scoping output to make the installation critical path visible before manufacturing begins, so commissioning timelines are realistic from the start rather than adjusted after the fact.

Share your steam capacity, operating pressure, coal quality data, site dimensions, local emissions limits, and permit status with our engineering team to begin. If third-party inspection, specific certification documentation, or guidance on emissions compliance configuration is needed, include that in your first message so we can confirm scope before scoping starts.

Talk to an Engineer
  • Steam capacity (T/H) — peak production load, not average
  • Coal quality data — LHV, ash, moisture, volatile matter, sulfur, particle size
  • Operating pressure (MPa) — note 0.7 MPa limit on 1–2 T/H models only
  • Site dimensions — boiler footprint, coal storage, ash handling, chimney
  • Local emissions limits — PM, SO₂, NOx thresholds
  • Installation permit status — confirm before purchase order

Get Instant Quote

When you’re looking for custom industrial boiler solution or service, we are always here repond to your quote as soon as possible.

Contact Form epcb