technology demonstration by TERI
TERI was working with a number of partners in
the VSBK (vertical shaft brick kiln) technology demonstration. The
partner network comprised of Development Alternatives, Comtrust
Ltd, Gram Vikas, MITCON (Maharashtra Industrial
and Technical Consultancy Ltd), Damle Clay Structurals Pvt. Ltd,
and TERI. VSBK of Chinese origin was identified as on option for
efficient brick production.
The first demonstration unit was set up at Datia
(Madya Pradesh) by Development Alternatives during 1996. Other demonstration
units were set up at differnet region in Kankia (Orissa), Palakkad
(Kerala), and Pune (Maharashtra), between 1997 and 2000. An energy
savings of 20% to 40% and a significant reduction in pollution (stack
emissions and work place environment) were achieved, as compared
with conventional brick firing technologies such as BTKs (bull’s
trench kilns) and clamps. The stack emissions (suspended particulate
matter) measured in VSBKs ranged between 100-250 mg/Nm3
as compared to the stringent emission standards of 750 mg/Nm3.
During the technology demonstration phase, the project mainly focused
on optimising/standardizing shaft size and
height, unloading mechanism, chimney, and damper systems
for optimising the performance of VSBK.
TERI’s major role during technology development
phase was making assessment of the VSBK technology under Indian
conditions and formulating recommendations for improving its performance
(energy and environment).