Biogas Power Generation Equipment

Biogas Generator Set

Gas engine generator set operating on biogas produced from anaerobic digestion, landfill, or agricultural waste, configured with gas treatment, engine, alternator, and control panel for continuous power and heat recovery.

20-1500 kW Output Range

1500 rpm Engine Speed

50-70% Methane Content Range

Product Introduction

The Biogas Generator Set is a power generation unit in which a spark-ignition gas engine drives an alternator to produce electrical power, using biogas as fuel. Biogas is typically produced from anaerobic digestion of organic waste, landfill decomposition, or agricultural residues, with methane content ranging from 50 to 70 percent depending on the source. The set includes a gas treatment train for desulfurization, moisture removal, and pressure regulation, followed by the gas engine, alternator, cooling system, and control panel, assembled as an integrated unit. Engine speed is set at 1500 rpm for 50 Hz output or 1800 rpm for 60 Hz output, with capacity ranging from 20 kW to 1500 kW depending on the model. The control panel manages engine start and stop, gas supply regulation, alternator excitation, synchronization, and protection functions. The set is applied in facilities where biogas is available on site and can be used to offset purchased electricity or supply heat through engine heat recovery.

Core Advantages

Biogas Utilization

Converts biogas produced on site into electrical power, reducing the volume of gas flared or released and lowering purchased electricity consumption.

Gas Treatment Integration

Desulfurization, moisture removal, and pressure regulation are integrated into the gas train, conditioning raw biogas before it reaches the engine.

Continuous Duty Operation

The gas engine and alternator are configured for continuous operation where biogas supply is stable, supporting base load power supply.

Heat Recovery Option

Engine jacket water and exhaust heat can be recovered through heat exchangers for hot water or steam supply, increasing overall energy utilization.

Parallel Operation Support

Multiple sets can be connected in parallel for load sharing, and the control system supports synchronization with an existing power grid or other generation units.

Emission Reduction

Combustion of biogas in a controlled engine reduces methane release compared with direct venting, supporting facilities operating under emission limits.

Product Characteristics

Fuel Type

Biogas from anaerobic digestion, landfill gas, or agricultural waste

Methane Content Range

50 to 70 percent, model dependent

Output Capacity

20 kW to 1500 kW, model dependent

Engine Type

Four-stroke spark-ignition gas engine

Engine Speed

1500 rpm for 50 Hz, 1800 rpm for 60 Hz

Alternator Type

Brushless synchronous alternator, single or three phase

Output Voltage

400 V, 480 V, or other values on request

Gas Supply Pressure

3 to 20 kPa at the engine inlet, model dependent

Gas Treatment

Desulfurization, moisture removal, filtration, pressure regulation

Cooling Method

Closed-loop water cooling with radiator or remote heat exchanger

Control Panel

PLC-based controller with HMI, auto start and stop, protection functions

Installation Form

Open skid, soundproof canopy, or containerized enclosure

Application Scenarios

Wastewater Treatment Plants

Power generation using biogas produced from anaerobic digestion of sewage sludge, with gas treatment as required.

Landfill Sites

Power generation from landfill gas collected through gas extraction wells, reducing methane release from the site.

Agricultural Biogas Plants

Power generation from biogas produced from livestock manure, crop residues, and other agricultural waste.

Food and Beverage Processing

Power generation from biogas produced from organic process waste and wastewater treatment at food processing facilities.

Industrial Organic Waste Treatment

Power generation at facilities treating industrial organic waste through anaerobic digestion.

Combined Heat and Power

Applications where engine heat is recovered for hot water, steam, or heating supply in addition to electrical output.

Frequently Asked Questions and Solutions

Engine fails to start or starts with difficulty

Check biogas supply pressure at the engine inlet, verify the gas shut-off valve is open, inspect the spark plug condition, and confirm the starting battery voltage.

Engine power output is lower than rated

Check methane content in the biogas, verify the air-fuel ratio setting, inspect the gas train for leakage, and confirm the engine load is within the rated range.

Engine coolant temperature rises above normal

Check coolant level, inspect the radiator for blockage, verify thermostat operation, and confirm the cooling fan is running.

Engine oil pressure drops during operation

Check oil level, inspect the oil filter for blockage, verify the oil pump operation, and confirm the oil viscosity matches the ambient temperature range.

Hydrogen sulfide corrosion in the gas train

Verify desulfurization unit performance, replace the desulfurization media according to the schedule, and inspect the gas train components for corrosion damage.

Moisture carryover into the engine

Check the moisture removal unit, drain the condensate trap at regular intervals, and verify the gas temperature is within the dew point specification.

Control panel shows alarm or shutdown code

Read the alarm code on the HMI, refer to the controller manual for the specific fault, and check the corresponding sensor or circuit for the indicated parameter.

Operating Notes

Verify biogas methane content and supply pressure before starting the engine; composition variation affects combustion stability.

Check engine oil level and coolant level at the start of each shift.

Replace desulfurization media and filters according to the maintenance schedule.

Drain condensate from the gas train at regular intervals to prevent moisture carryover.

Inspect the gas train for leakage at regular intervals, using a gas detector where required.

Replace spark plugs, oil filter, and air filter according to the maintenance schedule.

Confirm the installation space meets the ventilation and clearance requirements stated in the manual.

Verify that the exhaust system is routed away from air intakes and occupied areas.

Record operating parameters and alarm history for each run to support fault diagnosis.

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