Gasification Australia

The Tasman Class /Gasification Australia/Fluidyne Gasifier E-mail
"Our focus for the Tasman Class was to create a 3rd world robust,  high performance gasifier for the over 2 billion people of the world in need of power. It gives to these people access to large power, for domestic or comercial demands, that we take for granted in the 1st world"

This is a high performance batch operated gasifier rated at 15kWe. It has been designed for rural/remote and emergency applications for diverse and harsh environments around the world. It has a emphasis on specific sized and dried [<20% moisture] wood feedstock for optimum performance in a combustion engine. It will accept a broader range of feedstocks for process heating applications.
Many tree species of soft and hardwood varieties have been trialled and all work, although density of wood will alter the rate of fuel [wood] consumption.

 

Design: Fluidyne Gasification New Zealand

Manufacturer: (under license from the above) Gasification Australia Pty Ltd

Gasifier Specifications*

Gasifier type: Throated downdraft gasifier, batch operated.

Footprint: 2.0 m x 1.05 m (79” x 41”)

Frame height: 1.1 m (43”); excluding filter box and hopper

Dry Weight: 580 kg

Fuel: Block wood (not chips) from 20 to 50 mm mean size. 

Fuel feed rate: Up to 20 kg per hour.

Reload frequency: Every 2 to 4 hours. [Dependant on electrical load]

Cleanout frequency: After 20 hours run.

Filter changes: After 20 hours run

Gas cleaning system: Primary particulate removal via expansion box, baffle plate and cyclone system. Secondary particulate removal via dry gas filter utilising granular filter media (eg coarse sawdust or rice-husk).

Gas cooling & moisture removal via condensing heat exchanger.

Gas output: 45 Nm3 (maximum) per hour, suitable for IC engine with swept volume of approximately 3.0 litres and operation at 1500 / 1800 rpm.

Turndown ratio: 1:3

Gas calorific value: Approx. 5 MJ/m3

Gas composition: (Fuel dependent; a guide only)

Component

Proportion

CO

20%

H2

19%

CH4

1%

CO2

9%

N2

51%

Tar

< 80 ppm

By-products: Low-grade activated carbon, ash and condensate water (typical pH 8.2); used filter media containing fine carbon and moisture.

Condensate water should be filtered using the low-grade activated carbon prior to putting to drain. Filter media, ash and carbon by-products should be returned to soil as a soil conditioner.

Expected service life: 10 years [minimum]

Auxiliaries:

Electrical consumption: Approx. 0.75kW at 220v 50Hz (for cooling fans).

Startup system: Centrifugal suction fan and gas flare driven by either; mains power, battery or 4 stroke petrol engine.

Instrumentation: System pressure drop manometer, system temperature display, carbon monoxide (CO) alarm.

Spare parts pack:

  • Replacement seals for lids (filter, cooler, and fuel hopper)

  • Thread sealing and jointing compounds

  • Replacement hearth seals

  • Poker, cleanout rake and brush

  • Faceshield and orange hand-cleaner


*Specifications are subject to change. Actual gasifier performance and gas quality will depend upon fuel characteristics such as density and moisture content, hence these data should be used as a guide only.

  tasman_class_gasifier.jpg




 
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Gasification Australia Pty. Ltd. 2007