KPS Consultants & Impex Pvt. Ltd., New Delhi – India. 1 ANAEROBIC DIGESTION OF WASTE BIOMASS TO PRODUCE BIO - CNG ELECTRICITY BY MEANS OF BIOGAS GENSET FUEL FOR STEAM BOILER Anaerobic Digestion is a process where waste biomass is converted into useful products like Biogas and Organic Fertilizer by the action of micro-organisms in the absence of air. Biogas is typically a mixture of Methane, CO2 and traces of contaminant gases like H2S. The digestate leftover, after drying is used as an organic fertilizer. The biogas can be used to fire a boiler to produce steam, run a biogas genset to produce electricity or be converted into BioCNG for further energy use.
4
Embed
ANAEROBIC DIGESTION OF WASTE BIOMASS TO … WASTE TO ENERGY.pdf · New Delhi – India. 1 ANAEROBIC DIGESTION OF WASTE BIOMASS TO PRODUCE BIO - CNG ... Project Metrics
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
KPS Consultants & Impex Pvt. Ltd., New Delhi – India. 1
ANAEROBIC DIGESTION OF WASTE BIOMASS TO PRODUCE
BIO - CNG
ELECTRICITY BY MEANS OF BIOGAS GENSET
FUEL FOR STEAM BOILER
Anaerobic Digestion is a process where waste biomass is converted into useful
products like Biogas and Organic Fertilizer by the action of micro-organisms in the
absence of air. Biogas is typically a mixture of Methane, CO2 and traces of contaminant
gases like H2S. The digestate leftover, after drying is used as an organic fertilizer. The
biogas can be used to fire a boiler to produce steam, run a biogas genset to produce
electricity or be converted into BioCNG for further energy use.
KPS Consultants & Impex Pvt. Ltd., New Delhi – India. 2
We suggest a continuous anaerobic digestion system with multiple digester vessels
using a Thermophilic process at 50 to 60 ºC (elevated temperature accelerates the
digestion process and hence production of methane gas). The biogas produced can be
used to fire a boiler for producing steam. Contaminant gases like H2S are removed
from the biogas to run a genset to produce electricity. Hot flue gases from the above
two processes are used to heat the digester vessel. Alternatively, CO2 is removed from
the biogas and it is compressed to produce BioCNG. Recycling of water ensures that
limited amount of fresh water is used for slurry-making.
Various types of waste biomass that can be used are Food processing industry waste like potato & other vegetable / fruit peels