(ABRIDGED INVITATION FOR EXPRESSION OF INTEREST)
EXPRESSION OF INTEREST (EOI) FOR IDENTIFYING VENDORS FOR SUPPLY AND INSTALLATION OF MACHINERY/PLANT
FOR
TORRIFACTION OF AGRO RESIDUE AND MANUFACTURING PELLETS
with 20 coal based (38755 MW), 7 gas based, 1 Hydro based, 9 Joint Venture stations
(8 are coal based (5249 MW) and 1 is gas based) and 11 renewable energy (Solar PV)
projects. NTPC has an ambitious plan to become 128000 MW plus company by 2032.
For last many years, incidences of heavy smog in Delhi/NCR region have been evident
in month of October-November which are getting more sever due to agro residue
burning in the region of Punjab/Haryana after paddy harvesting. As a corporate citizen,
NTPC is working on a solution to this problem by utilizing this agro residue for power
generation in its coal fired power plants which would add value to agro residue and
create a market for it and farmers may start to sell it rather than burning it right in the
field. However, the raw agro residue cannot be directly utilized in power plants and
needs to be processed first in form of pellets or torrified biomass.
NTPC has successfully demonstrated the co-firing of raw biomass pellets blended with
coal up to 7% quantity and planning to scale it up. However, as an alternative, NTPC is
further looking for possibility of cost effective utilization of torrified pellets made of agro
residue, which are as good as coal, in its power plant.
Torrifaction is a process, in which biomass is heated on high temperature in absences of
oxygen for some time and biomass gets converted into coal like material in the process.
Torrifaction increases calorific value, reduces moisture content and makes biomass
brittle and grindable in normal coal mills. Moreover, after torrifaction hygroscopic nature
of biomass became hydrophobic and concern regarding raw biomass pellets storage
gets reduced to the large extent. Another advantage of torrifaction is reduction in
transport component of torrified biomass due to increase in calorific value of biomass
after torrifaction.
Further, NTPC is also actively exploring the ways to produce bio-char from crop residue
by torrifaction technology for using it as organic fertilizer in agriculture besides power
generation. Biochar when mixed with soil remains there for thousands of years,
therefore, mixing biochar in soil is a carbon negative and more eco-friendly method
which also has several other advantage viz. improving soil fertility and quality of
underground water.
For that purpose, NTPC intends to identify vendors for supply and installation of facility
for torrifaction of agro residue and making pellets from it.