How can Sugar Mills aid in generating electricity?
Bagasse is the dry, mushy fibrous substance
that persists when sugarcane or sorghum stems are mashed to excerpt their juice
and is an offshoot yielded in the method of synthesising sugar. It is also called
“Megass”.
GSEL Maharashtra, Gangakhed Sugar &
Energy Limited explains, Bagasse is scorched as fuel in the sugarcane mill or
utilized as an origin of cellulose for manufacturing animal feeds. Paper is
elicited from bagasse. It is presently used as a biofuel and in the fabrication
of pulp and paper commodities and building pieces of equipment. It is a
fundamental component for the structure of pressed building boards, acoustical
tile, and additional construction materials and can be made into numerous ecological
and environment-friendly plastics. It is also engaged in the generation of
furfural, a colourless fluid used in the synthesis of chemical outputs such as
solvents, nylons and even medications. The bagasse generated in a sugar factory
is nonetheless used for the production of steam which is further used as a fuel
source. For every 10 tonnes of sugarcane mashed, a sugar factory elicits
approximately 3 tonnes of soggy bagasse. Since bagasse is a derivative of the
cane sugar industry, the amount of output in a country is in line with the
amount of sugarcane produced.
Also read: Gangakhed Sugar & Energy Limited Owner- Ratnakar Gutte
Bagasse when scorched in abundance produces
ample heat energy to provide all the necessities of a regular sugar mill, with
sufficient energy to economize on. To this edge, an auxiliary use for this
trash product is in cogeneration, the use of a fuel source to give both heat
energy, employed in the mill and the electricity which is typically swapped
onto the prospect through power grids.
The
steps entailed in the generation of electricity using bagasse as raw material
are:
• Bagasse
is amassed as a dump from sugar mills and stocked in a moisture-free region.
• A
railing process is executed to take bagasse from the stocked region to boilers.
• The
boilers are huge cylindrical chambers halved into two parts, a shorter portion
where the burning of bagasse takes place and a larger portion where water tubes
are there in close proximity and thinner tubes to expand surface area.
• The
water in the tubes is passed through an economizer to make it a bit warm.
• The
burning process transmutes the water present in these tubes into high-pressure
steam.
• The
steam then flows towards the turbines. This steam also aids in sugar-making
processes.
• High-pressure
steam helps to operate turbines which aid in the generator to rotation, as the
turbine is attached to the generator through a shaft.
• The
generator then propagates electricity which can be stored or supplied for sugar
industry uses or can be sold to WAPDA which will help ameliorate the burden of
electricity generation.
The power generated through cogeneration
substitutes the traditional thermal alternative and curtails greenhouse gas
emissions. In India, curiosity in high-efficiency bagasse-based cogeneration
began in the 1980s when the electricity supply started plummeting low in
demand.
Gangakhed Sugar Owner, Ratnakar Gutte,
Member of the Legislative Assembly, Maharashtra gave a reference to a foretold
statement where high-efficiency bagasse cogeneration was anticipated as a
desirable technology both in terms of its capability to produce carbon-neutral
electricity as well as its financial benefits to the sugar industry. In the
current synopsis, where fossil fuel rates are exploding and there is a scarcity
and non-availability of coal, co-generation appears to be a favourable
advancement. The momentum on distributed generation and boosting awareness for
slashing greenhouse gas emissions intensifies the appetite for cogeneration.
Also, it helps in regulating pollution from fossil fuels.
In the last 15 years, 1952.53 MW of bagasse
cogeneration projects were authorized. The states with an administration
position in executing biomass power projects like bagasse-based cogeneration of
power are Karnataka, Tamil Nadu, Andhra Pradesh, Punjab and Maharashtra Chhattisgarh
and Rajasthan.
527 functioning sugar mills in India crush
around 240 million tonnes of cane every year and produce 80 million tones of
moist bagasse (50% moisture), of which they expend around 70 million for
meeting the captive necessities of power and steam. Hence, electricity
production through cogeneration in sugar mills in India is a significant avenue
for replenishing low-cost, non-conventional power.
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