Scope of the Technology : Enriched biogas is made moisture free by passing it through filters, after which it is compressed up to 200 bar pressure using a three stage gas compressor. Compressed gas is stored in high pressure steel cylinders as used for CNG . There is large potential of this technology in buses, tractors, cars, auto rickshaws, irrigation pump sets and in rural industries. This will help to meet energy demand for rural masses thus reducing burden of petroleum demand, moving towards energy security and will improve economic status by creating employment generation in rural area.
Cylinders filled from one 120m3 biogas bottling plant = 8 cylinders/day
(Capacity 6kg/cylinder)
As 6 kg CNG cylinder = 6 liter petrol
So, gas filled in these cylinders will be equivalent to = 6 x 8 = 48 liters of petrol/day or
Diesel/Petrol savings = 17520 liters/annum = Rs.13,44,000/annum approx. from one bottling plant.
Therefore, from only one Biogas bottling plant, enriched biogas filled cylinders will be able to replace fuel worth Rs.13 lakh annually. Increasing the number of bottling plants will be subsequently increase the diesel/petrol savings. The whole cost can be recovered within two-three years from the installation of the plant.
Cost estimate for the proposed technology
Cost estimate for the proposed technology
120m3 biogas/day Digester cost : Rs. 8,00,000/-
1. Biogas scrubbing/enrichment unit Rs. 3,50,000/-
2. High pressure compressor to fill CNG cylinders Rs. 7,00,000/-
3. CNG conversion kit and filling into cylinders Rs. 1,50,000/-
TOTAL Rs.20,00,000/-
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