Landfill Gas and Methane Generator Set

A gas engine generator set for landfill gas and other methane sources. Output, voltage and speed are configured to your gas supply and grid.

Model: MM-LFG
Product group: Gas & Biogas Generator Sets
Fuel: Landfill gas / methane
Voltage options: 230 V / 380 V / 400 V

Built for landfill gas and methane fuel
Voltage options: 230, 380 or 400 V
Engine speed options: 1,000, 1,500 or 1,800 r/min
Sized from your gas flow and composition
Container-ready for site installation

Request a quote Gas & Biogas Generator Sets →

Overview

How it works

Landfill gas is produced as organic waste breaks down, and it consists mainly of methane. A gas engine burns this fuel to drive a generator, turning a pollutant and fire risk into electricity. The same type of set can also run on methane from digesters or other biogas sources.

Why the gas matters

The output of a gas set depends far more on the fuel than on the nameplate. Methane content, gas flow, moisture, hydrogen sulfide and siloxane content all affect how much power the engine can deliver and how often it needs service. For this reason the rated output is set from a gas analysis of your site, and the gas pretreatment needed (drying, filtering, desulfurization) is part of the design.

Electrical and engine options

The set can be built for 230 V, 380 V or 400 V output and for engine speeds of 1,000, 1,500 or 1,800 r/min. The speed and frequency are chosen to match your grid or loads. Rated power, frequency and engine details follow from your gas data and appear on the quotation.

Where it is used

Customers include landfill operators, municipalities, wastewater plants and farms with digesters. The power can be used on site or exported to the grid where rules allow.

Configuration and delivery

Gas pretreatment, voltage and grid synchronization, container or open-frame installation, and exhaust, cooling and heat recovery options are selected to suit the site. The set is built in our factory and prepared for container shipping, and our engineers can guide installation and commissioning.

Landfill gas compared with natural gas and biogas sets

Landfill gas is not the same fuel as pipeline natural gas. It carries less methane, contains carbon dioxide, moisture, hydrogen sulphide and sometimes siloxanes, and its composition changes as the landfill ages. A gas engine set must therefore be specified for the actual gas, not for a generic rating. Where a natural gas set can be selected from a catalogue, a landfill gas set is selected from analysis results and the expected gas flow.

The main practical differences are three. Output is limited by gas available: a site producing a few hundred cubic meters per hour supports only a small set. Maintenance is more frequent because the gas is more corrosive. And safety interlocks are stricter, with a flare or a backup line for when the engine is shut down. If your gas comes from a digester, such as wastewater or manure, methane content is often higher and cleaner than landfill gas, which changes the engine settings and the cleaning skid. A recent gas analysis and flow record are the basis for engine size, cleaning steps and container layout.

Specifications

Specifications: Landfill Gas and Methane Generator Set
Model	MM-LFG
Fuel	Landfill gas / methane
Voltage options	230 V / 380 V / 400 V
Engine speed options	1,000 / 1,500 / 1,800 r/min
Electrical efficiency of gas engine sets	about 36–42 %
Methane content of landfill gas	about 40–60 % by volume
Lower heating value of landfill gas	about 14–22 MJ/Nm³
Unit size per engine	about 200 kW to 2 MW
Gas supply pressure at the engine	about 50–200 mbar after the gas train
Thermal output available for heat recovery	about 40–45 % of fuel energy
Oil change interval on landfill gas	about 500–1,000 running hours, depending on gas cleaning

Configurations

Standard equipment

Gas engine with generator on a common frame
Gas train with pressure regulator, filters and safety shut-off valves
Engine and generator control panel with protection relays
Cooling radiator or heat exchanger set
Exhaust silencer and flexible connections
Flare safety interlock inputs
Spare parts list and commissioning manual

Options

Container housing with ventilation and fire detection
Combined heat and power heat recovery module
Gas drying and cooling skid
Activated carbon filter for H₂S and siloxanes
Grid synchronizing and export-limit controller
Remote monitoring
Gas analyzer for methane and oxygen

Frequently asked questions

What gas information do you need before quoting?

The methane content, the available gas flow and the main contaminants such as hydrogen sulfide. A recent gas analysis report is the best starting point, and the engine and any pretreatment are selected from that data.

Can the set be installed in a container?

Yes. We can supply the set in a container or as an open-frame unit for an existing building. The choice depends on your site, climate and noise requirements.

Do you supply spare parts?

We can supply a recommended spares list with the set, including filters, spark plugs and service items. Parts support is included in the quotation.

Does the engine run on biogas from a digester too?

Yes, but settings and gas cleaning differ from landfill gas. Biogas usually has higher methane and fewer contaminants, so the engine and fuel train are adjusted to the analysis.

Request a quote: Landfill Gas and Methane Generator Set

Send your requirement and our engineers reply with the configuration, lead time and a quotation.

sales@machinemalls.com