Biomass Gasification

Biomass Gasification

Sustainable Renewable Energy for Cambodian Rice Mills, Brick

& Tile Factories, Ice Making Enterprises and Manufacturing

Plants

What is Biomass Gasification ?Conversion of organic materials into

combustible gas mixture called SYN Gas or Producer Gas.

Involves partial combustion of biomassFour distinct processes occur in the

Gasifier as illustrated below:* Organic materials are living

organisms from plants and animals.

The Gasification Process

1. DryingRemoval of Water with Heat

2. PyrolysisDecomposition with heat

3. CombustionProcess of Burning/oxidation

4. ReductionOxygen lost and Hydrogen added

Biomass From Agro-Forestry Residues

Woody/Bamboo pieces or ChipsRice HuskNut Shell like Coconut, PeanutCorn CobSugarcane BaggasseCashew Nut ShellAgriculture Waste

Wood

Corn Cobs

Rice Husk

Syngas or Producer Gas (Chemical Formula)

N2 Nitrogen

CO Carbon Monoxide

H2 Hydrogen

CO2 Carbon Dioxide

CH4 Methane

O2 Oxygen

Syngas/Producer Gas - CompositionChemical

Compounds Rice Husk Woody Biomass

CO 15-25% 20-27%H2 10-15% 10-15%

CH4 Upto 4% Upto 3%N2 45-55% 45-50%

CO2 8-12% 8-12%O2 0-0.5% 0-0.6%

Gas C.V. (kcal/Nm3) Above 1050 Above 1100 Syngas generated per kg of biomass 2 Nm3 2.5 Nm3

Syngas Characteristics

No ColorSome Odor (distinct “burnt” smell)Some Impurities (Not Clean)Poisonous (Health Affecting)

Biomass Gasification Technology, Gasifier System Components and

Design

Biomass Gasifier – Products

WBG - Woody Biomass Gasifier

FBG - Rice Husk Gasifier

COMBO - Combination Biomass Gasifier

BinHopperReacto

r

Venturi Scrubbe

rHeat

ExchangerDemis

terBlower

Filters Gas Line Gas Flare

Gasifier Body

1- Bunker

2- Hopper

3- Reactor

4- Dry Ash Conveyor

5- Rice Husk Elevator

1

2

3

45

Wet / Dry Blower 1- Blower suction

adaptor

2- Water injection to wet

blower

3- Observation window

4- Blower delivery/outlet

5- Manual gas control

valve

6- Separation box gas inlet

7- Separation box

2

3

1

Hot and Cool Gas Lines

6 – Reactor Outlet box

7 – Venturi Scrubber

8 – Hot Gas Temperature

9 – Drain box

10 – Drain Tub

Safety Filter and Passive Filters

Coarse and Fine Filter Lines

Wastewater Treatment Plant

Cooling Tower

ALUM Settling Tank

Sand FilterCharcoal Filter

Biomass Gasifiers SystemSize and Capacity

CAPACITY of BIOMASS GASIFIERS

1. Using Rice Husk Fuel = FBG Type Gasifier

2. Using Woody Fuel = WBG Type Gasifier

3. Using Rice Husk and Woody Fuel = COMBO Gasifier

ANKUR Model Sizes FBG : 40, 60, 80, 100, 120, 150, 200, 250, 300, 350, 400, 500, 600, 700, 850

The Largest Size “ANKUR” Type Rice Husk Gasifier is FBG 850

How to Calculate the Size A Gasifier Running in Dual Fuel Mode. ( 30% Diesel and 70% Syngas)

Biomass Capacity Table for ANKUR Gasifiers

1. FBG 100 = 120 kg husk per hour

2. FBG 150 = 180 kg husk per hour

3. FBG 200 = 240 kg husk per hour

4. FBG 300 = 360 kg husk per hour

5. FBG 400 = 480 kg husk per hour

6. FBG 500 = 600 kg husk per hour

7. FBG 600 = 720 kg husk per hour

8. FBG 700 = 840 kg husk per hour

9. FBG 850 = 1,020 kg husk per hour

Thanks You !