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Industrial Liquid-Fuel Boiler Plants — a Reliable Solution for Primary, Backup and Peak Heat Supply

We design and commission liquid-fuel boiler plants for space heating, domestic hot water and process heat.
  • Rapid start-up and ramp-up to operating conditions
  • Diesel fuel, heavy fuel oil, heating oil and other liquid fuels
  • Primary, backup or peak heat source
  • Stationary, block-modular and containerised solutions
  • Turnkey installation and commissioning
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Industrial Liquid-Fuel Boiler Plants — a Reliable Solution for Primary, Backup and Peak Heat Supply

What Is a Liquid-Fuel Boiler Plant?

Liquid-fuel boiler plants are heat-generation systems designed to provide space heating, domestic hot water and process heat. They generate heat by burning diesel fuel, heavy fuel oil, heating oil or other liquid fuels.

These solutions are used at facilities where a reliable heat supply, rapid start-up and the ability to store the required fuel reserves directly on site are important.

One of the key features of liquid-fuel boiler plants is their ability to operate as a primary, backup or peak-load heat source.

For this reason, these boiler plants are often installed at facilities that require an independent heat supply, need to back up the primary heat source or must cover peak heat loads.

Depending on the facility’s requirements, a liquid-fuel boiler plant can be stationary, built-in, attached, free-standing, block-modular, containerised or mobile.

The equipment configuration is selected individually, taking into account the heat load, fuel type, fuel supply and storage conditions, operating mode, and backup and automation requirements.

Liquid fuel boiler plant
Advantages of Liquid-Fuel Boiler Plants

Liquid-fuel boiler plants are an effective solution where rapid start-up, stable operation, redundancy and flexibility in selecting the installation configuration are important.

These systems are well suited to both continuous heat supply and backup or peak-load operation at facilities serving various purposes.

Rapid Start-up and Ramp-up to Operating Conditions 01

Liquid-fuel boiler plants allow the system to be started rapidly and the required thermal output to be reached quickly.

This is particularly important for backup, emergency and peak-load operating scenarios.
Use as a Backup Heat Source 02

A liquid-fuel boiler plant is often used as a backup heat source for a gas-fired, electric or other heat-supply system.

This approach improves facility reliability and helps maintain the heat supply when operating conditions change.
On-site Fuel Reserve 03

Fuel can be stored in tanks directly on site, providing greater flexibility in organising the heat supply.

The storage arrangement and capacity are defined by the design and applicable regulatory requirements.
High Level of Automation 04

Modern liquid-fuel boiler plants integrate well with automatic control systems, safety systems, weather-compensated control and remote monitoring.

This allows for precise control of operating modes and system parameters.
Flexible Siting 05

Liquid-fuel boiler plants can be built in stationary, built-in, attached, free-standing, block-modular, containerised or mobile configurations.

The specific siting configuration is selected with due regard to the building type, safety requirements and applicable Ukrainian State Building Codes (DBN).
Solutions for Different Applications 06

Liquid-fuel boiler plants are used at residential, commercial, warehouse, agricultural, administrative and industrial facilities.

They are suitable for space heating, domestic hot water and specific process applications.
Find the Right Liquid-Fuel Boiler Plant for Your Facility
Find the Right Liquid-Fuel Boiler Plant for Your Facility Answer 8 questions, and we’ll prepare a preliminary cost estimate and recommend the most suitable system configuration
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Which heat sources and energy carriers do you plan to use?
Where Are Liquid-Fuel Boiler Plants Suitable?

Liquid-fuel boiler plants are suitable for facilities where a reliable heat supply, heat-source redundancy, rapid system start-up and the ability to store fuel directly on site are important. For residential and public buildings, the boiler plant configuration must always be selected in accordance with applicable Ukrainian State Building Codes (DBN).

Apartment buildings Apartment buildings
Hotels and Apartment Complexes Hotels and Apartment Complexes
Residential developments Residential developments
Manufacturing Enterprises Manufacturing Enterprises
Commercial and logistics facilities Commercial and logistics facilities
Office centres and administrative buildings Office centres and administrative buildings
Agricultural and Greenhouse Facilities Agricultural and Greenhouse Facilities
Facilities Requiring Space Heating, Domestic Hot Water or Process Heat Facilities Requiring Space Heating, Domestic Hot Water or Process Heat
Free-standing Solutions for Municipal and Socially Important Facilities Free-standing Solutions for Municipal and Socially Important Facilities
Warehouses and Warehouse Complexes Warehouses and Warehouse Complexes
Types of liquid-fuel boiler plants
  • By Fuel Type
  • By Location
  • By Application
Diesel Fuel and Biodiesel

The most common option for facilities where rapid start-up, stable operation and ease of use without fuel preheating are important. Biodiesel may be considered for specific applications, but the system must be selected with due regard to the compatibility of the fuel-system components, seals and filters.

Heavy Fuel Oil

A solution for high-capacity industrial and municipal facilities where the use of heavy fuel oil is appropriate. These boiler plants require fuel-storage, filtration and preheating systems to maintain the required viscosity and ensure stable fuel delivery to the burner.

Light Heating Oil

Suitable for liquid-fuel boiler plants where stable operation, ease of maintenance and system compatibility with the specific fuel characteristics are important. The solution is selected individually according to the equipment type, operating mode and heat-supply requirements.

Multi-Fuel (Combined) Solutions

These boiler plants can operate on several types of liquid fuel or combine primary and backup fuels within a single system. This provides greater operating flexibility and allows the system to be adapted to fuel availability and the facility’s operating conditions.

The choice of liquid-fuel boiler plant configuration depends not only on the required capacity but also on the operating conditions, fuel type, redundancy requirements and characteristics of the facility itself. When selecting a solution, it is important to consider:
How to Choose a Liquid-Fuel Boiler Plant for Your Facility
Facility Type, Floor Area and Available Installation Space
Heat Load and Domestic Hot-Water Demand
Type of liquid fuel available
Fuel storage conditions and location for tanks
Redundancy requirements
Facility Operating Mode
Required level of automation
Need for Peak-Load or Emergency Operation
Potential Future Expansion of the Facility
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What Is Included in a Liquid-Fuel Boiler Plant

The equipment included depends on the boiler plant type, capacity, purpose, fuel type and technical specification. The basic configuration of a liquid-fuel boiler plant may include:

  • hot-water or steam boilers
  • control and automation system
  • liquid-fuel burners or dual-fuel gas/liquid-fuel burners
  • safety system
  • fuel tanks
  • flue-gas extraction system
  • fuel-supply, pumping and filtration systems
  • metering units
  • pump groups
  • electrical switchboard equipment
  • heat-exchange equipment
  • shut-off and control valves
  • water-treatment system
  • instrumentation and measuring devices
  • expansion vessels
  • monitoring and signal transmission system

Where required, the solution may include day tanks, fuel-preheating systems, backup heat sources, automation cabinets, weather-compensated control systems, cascade control and integration with the facility’s general monitoring and control system. Combined solutions may use dual-fuel gas/liquid-fuel burners that can operate on gas and backup liquid fuel.

Liquid fuel boilers in a boiler plant

Safety, Control and Automation

A modern liquid-fuel boiler plant must not only generate heat efficiently but also ensure safe, stable and controlled system operation.

Particular attention is therefore paid to automation, operating-parameter monitoring, burner control, fuel-supply safety and system-monitoring capabilities.

  • temperature, pressure and draught monitoring
  • protection against emergency conditions
  • automatic shutdown in the event of critical deviations
  • burner control
  • pump-group control
  • fuel level control
  • fuel-supply and pressure monitoring
  • weather-compensated control
  • remote monitoring
  • transmission of alarm notifications
  • integration with BMS or other supervisory control systems
  • monitoring of fuel-tank and fuel-line condition
Liquid fuel boiler plant
Main Technical Specifications
Parameter Configuration Options
Thermal capacity Thermal capacity From local systems to high-capacity industrial liquid-fuel boiler plants; calculated individually according to the facility's requirements.
Fuel type Fuel type Diesel fuel, heavy fuel oil, light heating oil and other liquid fuels — depending on the technical specification and equipment configuration.
Equipment (boiler type) Equipment (boiler type) Hot-water or steam boilers equipped with liquid-fuel burners or dual-fuel gas/liquid-fuel burners — depending on the fuel type, capacity and operating mode.
Application Application Space heating, domestic hot water (DHW), process heat and steam generation.
Configuration Configuration Stationary, built-in, attached, standalone, block-modular, containerised or mobile solutions.
Automation and control Automation and control From local control panels to automation systems with cascade control, remote monitoring and integration with BMS or SCADA, as specified in the design.
Operating modes Operating modes Primary, backup, peak or emergency — depending on the facility's requirements.
Turnkey supply Turnkey supply Hot-water or steam boilers, burner units, fuel-storage and fuel-supply systems, pump groups, heat-exchange equipment, automation, flue-gas extraction and metering units.
Flue gas extraction Flue gas extraction Design and installation of flue-gas extraction systems according to the fuel, boiler capacity and site-specific requirements.
Supervisory control system Supervisory control system Integration with BMS or SCADA; transmission of operating parameters, alarm and service notifications. Remote control is provided only to the extent permitted by the design.
Fuel storage and supply system Fuel storage and supply system Fuel tanks, day tanks, pumps, filters, pipelines and other solutions depending on the configuration. Capacity and placement are determined by the project and regulatory requirements.
Technical solutions are selected in accordance with applicable regulatory requirements, fuel characteristics, and site operating conditions Get a quote
Why Clients Choose Us for Liquid-Fuel Boiler Plants

We provide more than equipment supply: we deliver a complete solution from initial engineering through to commissioning.

Each project is developed for a specific facility, taking into account the heat loads, liquid-fuel type, utility networks, redundancy and automation requirements, and the fuel-storage and fuel-supply arrangements.

Site-specific system selection Site-specific system selection
Complete turnkey project delivery Complete turnkey project delivery
Solutions for available liquid fuel types Solutions for available liquid fuel types
Automation and supervisory control Automation and supervisory control
Solutions for new and existing facilities Solutions for new and existing facilities
Installation, Commissioning and After-sales Service Installation, Commissioning and After-sales Service
We Design and Build Boiler Plants Tailored to Your Requirements
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Frequently asked questions about liquid fuel boilers
Which fuels can a liquid-fuel boiler plant use?

Diesel, heating oil or heavy fuel oil; biodiesel and fuel blends may be used only with the manufacturer’s approval. Heavy fuel oil requires preheating, circulation and filtration.
Can a liquid-fuel boiler plant be used as a backup heat source?

Yes. The design may specify liquid fuel for backup or emergency duty; a code-compliant fuel reserve, a safe changeover arrangement and periodic test runs are required.
How are the required fuel reserve and tank capacity determined?

The reserve is calculated from daily consumption. Under the Ukrainian State Building Codes (DBN), the requirement is 10 days for primary or backup fuel delivered by road or rail, 3 days for emergency fuel at a gas-fired boiler plant, and 2 days for pipeline delivery. At least two tanks are required for primary or backup fuel.
How does a diesel-fired boiler plant differ from one firing heavy fuel oil?

Diesel does not require preheating, so the system is simpler. Heavy fuel oil requires heating, circulation and more intensive filtration, making it more demanding to operate.
Can a liquid-fuel boiler plant operate automatically?

Yes, provided the design includes automatic controls, safety devices, fuel isolation and alarms to duty personnel. Following an emergency shutdown at an unattended plant, the system must be restarted manually after the fault has been rectified.
Can a gas-fired boiler plant be converted to run on diesel?

Yes, if the boiler and combustion chamber are compatible. The work requires a conversion design, a liquid-fuel storage and handling system, checks of the chimney and controls, safe isolation of the gas system, testing and formal approval of the changes.
What requirements apply to the location of fuel tanks?

The design must consider the fuel type, tank capacity, fire-separation distances, spill containment, leak and overfill protection, ventilation, earthing and safe filling arrangements. Permitted day-tank capacities are specified in DBN V.2.5-77:2014.
What is included in the turnkey price of a liquid-fuel boiler plant?

The scope typically includes design, boilers and burners, tanks, pumps, filters, fuel pipework, the flue-gas extraction system, water treatment, controls, the module, delivery, installation and commissioning. The contract defines the exact scope.
What determines the cost and project schedule of a liquid-fuel boiler plant?

The main factors are capacity, fuel type, tanks, fuel heating, redundancy, controls, chimney, site readiness, logistics and permitting procedures. The final price and schedule are fixed in the contract.

Industrial Liquid-Fuel Boiler Plants

Industrial liquid-fuel boiler plants provide space heating, domestic hot water, steam, and process heat for manufacturing facilities, agricultural businesses, warehouses, construction sites, and municipal infrastructure.

Fuel can be stored directly on site, allowing the system to operate as the primary, backup, peak-load, or emergency heat source. Operating costs depend on the fuel type, logistics, operating mode, and storage arrangements. Teploformat Engineering provides a complete scope of services—from design to boiler plant commissioning.

When Is a Liquid-Fuel Boiler Plant a Suitable Choice?

Industrial liquid-fuel boiler plants are suitable where connection to the gas network is unavailable or the heat supply system must be commissioned quickly. They can be used for seasonal operation, peak-load coverage, industrial processes, and steam generation.

A diesel boiler plant can provide emergency heat during repairs. Liquid-fuel equipment can also serve as a backup for gas-fired boiler plant or electric boiler plants where an on-site fuel reserve is required.

For continuous operation, fuel, delivery, storage, preparation, and maintenance costs are compared. The final decision is based on the total cost of operation.

Selecting the Right Liquid Fuel

A diesel-fired boiler plant starts quickly and does not require fuel preheating. Diesel fuel also has relatively straightforward logistics, making it a common choice for backup, emergency, and mobile systems.

Heating oil can be used with suitable burner equipment. Before it is selected, its characteristics, quality, and compatibility with pumps, filters, and valves must be verified.

A heavy fuel oil boiler plant is generally used at high-capacity industrial facilities. Heavy fuel oil requires filtration, heating, and viscosity control. The system needs a suitable liquid-fuel burner, insulated pipelines, and a fuel-preheating system.

Biodiesel can be considered as an alternative fuel after confirming its compatibility with burners, pumps, seals, and filters. Engineering decisions must be based on the characteristics of the specific fuel batch rather than its general classification alone.

Primary, Backup, or Peak-Load Operation

A primary boiler plant continuously covers the facility’s thermal load. A backup boiler starts when the main heat source is unavailable, while a peak-load system operates during periods of maximum demand. A mobile or emergency boiler plant can provide temporary heat during repairs.

A factory-built dual-fuel gas/liquid-fuel burner can be used to switch from gas to backup liquid fuel. Such multi-fuel boiler plants require a coordinated fuel storage, supply, and automatic changeover system.

Fuel Storage and Supply Arrangements

The fuel system may include main storage tanks, a day tank, pumps, filters, pipelines, and shut-off valves. It should also provide fuel-level monitoring and overfill protection. Viscous fuels may require heating systems for the storage tanks and supply lines.

The required fuel reserve depends on the boiler plant capacity, fuel consumption, required operating period, and delivery schedule. Tank capacity is calculated according to site conditions and safety requirements. Spill containment measures must also be provided.

Factors Considered During Design

Liquid-fuel boiler plant design begins with collecting the initial project data. Engineers consider:

  • the required thermal capacity, application, and operating mode;
  • fuel characteristics and the required duration of independent operation;
  • tank locations and the fuel supply and filtration methods;
  • the need for preheating and the type of boilers and burner equipment;
  • flue-gas extraction and power supply for auxiliary equipment;
  • boiler and pump redundancy, automation, and supervisory control;
  • emissions, fire safety, and spill-prevention requirements.

A block-modular liquid-fuel boiler plant can be delivered as a preassembled system. However, the fuel tanks, pipelines, and connection points must be coordinated with the conditions of the specific site.

Modular liquid-fuel boiler plants are configured according to the external fuel system and the available installation area.

Automation and Safety

The automation system monitors temperature, pressure, draught, flame presence, burner operation, and fuel supply. It can track fuel levels in the tanks, perform emergency shutdowns, manage a boiler cascade, and transmit alarm notifications to a BMS or supervisory control system.

An automated boiler plant still requires periodic inspection. Personnel must service the burners, pumps, and filters, inspect the tanks and fuel lines, and clean the boilers and chimneys.

Environmental and Operational Considerations

Liquid-fuel systems should not be described as environmentally clean. Stable operation requires combustion-quality control, correct burner adjustment, regular cleaning of boilers and flue-gas passages, and compliance with applicable emissions requirements.

Fuel must be stored properly, leaks must be prevented, and tank condition must be monitored. Regulatory restrictions and permitted installation formats should be verified separately for each facility by a qualified design engineer.

What Determines the Cost of a Liquid-Fuel Boiler Plant?

The project budget depends on the required thermal capacity, number of boilers, fuel type, burner equipment, primary or backup operating mode, installation format, and required fuel reserve. Other factors include the number and type of storage tanks, fuel heating, the complexity of supply and filtration systems, flue-gas extraction, automation, and the scope of design and installation work.

Liquid-fuel boiler plants in Ukraine with the same rated capacity may differ considerably in their equipment configuration. A universal price per kilowatt without a technical specification would therefore be inaccurate.

Liquid-Fuel Boiler Plants by Teploformat Engineering

Teploformat Engineering performs the technical site assessment, calculates the thermal load, assesses the available fuel options, selects the boilers and burners, and designs the fuel system. The next stages include manufacturing and integration, delivery, liquid-fuel boiler plant installation, commissioning, and automation setup. This provides the customer with a turnkey boiler plant and coordinated responsibility across all project stages.

The company has been operating since 2013 and has completed more than 60 projects. Examples are available in the Portfolio section.

After commissioning, the customer receives the required documentation, personnel training, and technical support. The warranty period ranges from 12 to 24 months, depending on the equipment, configuration, and contract terms. Warranty and after-sales service are also available.

To receive a preliminary cost estimate for a liquid-fuel boiler plant, provide information about the facility’s purpose, required capacity, available fuel, operating mode, and desired duration of independent heat supply. Teploformat Engineering specialists will select the equipment, define the fuel-system requirements, and recommend a suitable configuration.