 Conversion of organic materials into combustible gas mixture called SYN Gas or
Producer Gas.
 Involves partial combustion of biomass
 Four distinct processes occur in the Gasifier as illustrated below:
 * Organic materials are living organisms from plants and animals.

The Gasification Process
1. Drying
Removal of Water with Heat
2. Pyrolysis
Decomposition with heat
3. Combustion
Process of Burning/oxidation
4. Reduction
Oxygen lost and Hydrogen added

Biomass From Agro-Forestry Residues
 Woody/Bamboo pieces or Chips
 Rice Husk
 Nut Shell like Coconut, Peanut
 Corn Cob
 Sugarcane Baggasse
 Cashew Nut Shell
 Agriculture Waste
Rice Husk
Wood
Corn Cobs

 N
2
 CO
 H
2
 CO
2
 CH
4
 O
2
Syngas or Producer Gas
(Chemical Formula)
Nitrogen
Carbon Monoxide
Hydrogen
Carbon Dioxide
Methane
Oxygen

Chemical
Compounds
Rice Husk Woody Biomass
CO 15-25% 20-27%
10-15% 10-15% H
2
CH
4
N
2
CO
2
O
2
Upto 4%
45-55%
8-12%
0-0.5%
Upto 3%
45-50%
8-12%
0-0.6%
Above 1050 Above 1100 Gas C.V. (kcal/Nm 3 )
Syngas generated per kg of biomass
2 Nm3 2.5 Nm3

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

Biomass Gasification Technology,
Gasifier System Components and
Design

 WBG - Woody Biomass Gasifier
 FBG - Rice Husk Gasifier
 COMBO - Combination Biomass Gasifier

Bin
Hopper
Reactor
Venturi
Scrubber
Heat
Exchanger
Demister
Blower
Filters Gas Line
Gas Flare

 1- Bunker
 2- Hopper
 3- Reactor
 4- Dry Ash Conveyor
 5- Rice Husk Elevator
1
3
2
4
5

 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
3
2
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

Cooling Tower
ALUM Settling Tank
Charcoal Filter Sand Filter

Biomass Gasifiers System
Size 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