All incinerators

Addfield G250

A continuous stepped-hearth machine rather than a batch loader: it runs at 250 kg an hour, which is the scale an island council handles rather than a single property.

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Burn rate
250 kg/hour
Thermal input
1,000,000 kcal/hour
Chamber volume
5.45 m³
Manufacturer
Addfield · United Kingdom
A containerised G250 as delivered: the machine in the lower container, the secondary chamber and flue treatment in the upper one, with access stairs and a walkway between them.
A containerised G250 as delivered: the machine in the lower container, the secondary chamber and flue treatment in the upper one, with access stairs and a walkway between them.
  • The same plant from the side, with the hydraulic ram charger that feeds the hearth in the foreground and the fuel tank beyond it.
    The same plant from the side, with the hydraulic ram charger that feeds the hearth in the foreground and the fuel tank beyond it.
  • Inside the lower container: the machine on the left, and the control cabinet with its touch screen on the right.
    Inside the lower container: the machine on the left, and the control cabinet with its touch screen on the right.
  • The secondary chamber in the upper container — the flue gases run its length before reaching the stack.
    The secondary chamber in the upper container — the flue gases run its length before reaching the stack.

How it works

Not a batch machine. Where the SB, TB and TB-AB take one load a day and burn it out, the G250 runs continuously on a stepped hearth — waste is fed in at the top of the steps and works down as it burns, at 250 kg an hour rather than 750 to 2,000 kg a day.

That is a different scale of operation and a different kind of buyer. Addfield list its typical streams as general municipal, camp waste, food processing plants, oil sites and military installations: places where waste arrives all day from more than one source. On an island that means a council rather than a property.

It is normally supplied containerised, which is worth knowing before siting it. The plant in the photographs is two containers stacked — machine below, secondary chamber and flue treatment above — with access stairs and a walkway, and it is delivered rather than built on site.

  • A stepped hearth rather than a flat chamber floor: waste is fed at the top and works down the steps as it burns, so the machine takes a continuous feed instead of one batch a day.
  • Pyrolytic combustion — burning the waste in a starved-air primary chamber and completing the burn in the gases above it.
  • A refractory lining between 191 mm and 226 mm, thicker than any batch machine in this range.
  • A secondary chamber holding the flue gases for two seconds before they reach the stack.
  • Normally built into shipping containers — machine below, secondary chamber and flue treatment above — with access stairs and a walkway.

Built to order, not standard supply

  • Automatic bin tipper and auto-loading, so the hearth is fed without an operator on the platform.
  • Automatic de-ashing.
  • Dual-fuel operation.

Addfield builds these to order. Ask GreenWave for them at enquiry — they are specified before the machine is made, not fitted afterwards.

Full specification

Burn rate
250 kg/hour
Thermal input
1,000,000 kcal/hour
Chamber volume
5.45 m³
Chamber
2.4 × 1.7 × 1.7 m
Loading
Front
Refractory
191–226 mm
Fuel
Diesel, LPG, natural gas, bio fuel or dual fuel
Gas retention
2 seconds
Afterburn
Complies with EU legislation
Certification
CE marked
Type
Stepped hearth, continuous feed

The specification, against the rest of the range

Specifications for Addfield G250 and the other models in this category. Rows are every figure any model quotes; an em dash means that model does not quote it.
SpecificationAddfield SBAddfield TBAddfield TB-ABAddfield MP300Addfield G250This model
Burn rateUnder 50 kg/hourUnder 50 kg/hour (UK); 50–75 kg/hour on export machinesUnder 50 kg/hour (UK); 50–75 kg/hour on export machinesUnder 50 kg/hour250 kg/hour
Chamber volume1.54 m³2.3 m³4.18 m³0.76 m³5.45 m³
Chamber1.6 × 1.1 × 0.93 m2.45 × 1.1 × 0.92 m2.45 × 1.6 × 0.92 m1.6 × 0.67 × 0.7 m2.4 × 1.7 × 1.7 m
LoadingTopTopTopFrontFront
Refractory180 mm180 mm180 mm220 mm191–226 mm
FuelDiesel, LPG, natural gas or bio fuelDiesel, LPG, natural gas or bio fuelDiesel, LPG, natural gas or bio fuelDiesel, LPG, natural gas or bio fuelDiesel, LPG, natural gas, bio fuel or dual fuel
Gas retention2 seconds2 seconds2 seconds2 seconds at 1,100 °C2 seconds
AfterburnComplies with EU legislationComplies with EU legislationComplies with EU legislationComplies with EU legislationComplies with EU legislation
CertificationUKCA · CE · Defra approved · ISO 9001:2015 · ISO 14001:2015UKCA · CE · Defra approved · ISO 9001:2015 · ISO 14001:2015UKCA · CE · Defra approved · ISO 9001:2015 · ISO 14001:2015UKCA · CE · Defra approved · ISO 9001:2015 · ISO 14001:2015CE marked
Load capacity750 kg per batch1,300 kg per batch2,000 kg per batch
Type approvalDefra, to EU Animal By-Products Regulations 142/2011Defra, to EU Animal By-Products Regulations 142/2011Defra, to EU Animal By-Products Regulations 142/2011
Secondary chamber850 °C minimum, 2-second retention850 °C minimum, 2-second retention850 °C minimum, 2-second retention1,100 °C minimum, 2-second retention
Thermal capacity144 kW216 kW288 kW390 kW
External size3,425 × 2,890 × 2,095 mm3,865 × 2,900 × 2,095 mm3,965 × 3,490 × 2,095 mm3,156 × 1,150 × 1,950 mm
Height with stack3,980 mm3,980 mm3,980 mm3,600 mm
Door aperture1,565 × 1,070 mm2,385 × 1,055 mm2,385 × 1,570 mm675 × 550 mm
Weight3.6 tonnes4.8 tonnes6.5 tonnes3.6 tonnes
Power supply220–240 V single phase, 50/60 Hz220–240 V single phase, 50/60 Hz220–240 V single phase, 50/60 Hz220–240 V single phase, 50/60 Hz
Refractory rating1,450 °C1,450 °C1,450 °C
Fire brickGrade E23, 42.5% aluminaGrade E23, 42.5% aluminaGrade E23, 42.5% aluminaGrade E23, 42.5% alumina
Insulation board25 mm25 mm25 mm25 mm
Ash residueAbout 3% of the loaded volumeAbout 3% of the loaded volumeAbout 3% of the loaded volume

Rows here are the figures more than one machine quotes. 5 further figures are quoted for the Addfield G250 alone and are in the full specification above. Figures for Addfield G250 are Addfield’s published specification. See the manufacturer’s sheet. Confirm the figures that decide a purchase with GreenWave before ordering.

What GreenWave supplies

  • Continuous municipal-scale operation
  • Installation, testing and commissioning
  • Operator training and warranty
  • After-sales technical support and spare parts

Is the Addfield G250 the right size for your property?

Request a site visitsales@greenwavemaldives.com

Every installation includes

  • Installation, testing and commissioning
  • Operator training and warranty
  • AMC, spare parts and after-sales technical support