Overview of the Hybrid Hoffman Kiln Concluding Workshop for “Improving Kiln Efficiency for the Brick Making Industry - PDF B Phase”
March 29, 2007
Overview of Hybrid Hoffman Kiln • HHK has dominated the brick industry in China for over 10 years • Energy efficient • Environmentally friendly • Lowers production costs • Produces stronger quality bricks • Improves working conditions • Year-round operations
Energy saved by placing a roof over the baking area
Kiln roof constructed …..
and insulated with compacted clay to further prevent energy losses
Result: Less coal consumed…….reduced GHG emissions
“Internal fuel” through the mixing clay and coal …….further improvements in energy efficiency
Sustainable development benefit…….reduced air pollution
Sustainable development benefit…….stabilized work force
Improved quality bricks…..
Diversified Product Base
Improved brick industry efficiencies will meet growing demand for bricks
Summary of Emissions Reductions Description
Annual Production
Emissions (tons CO2 eq.)
2.0 mil
760
Energy Inefficient Kiln x 7.5
15.0 mil
5700
New Emissions Reduction Technology - HHK
15.0 mil
2955
Energy Inefficient Kiln
Emission Reductions (per HHK)
2745
Cost of Demo Kiln • Cost of the actual kiln • Cost of back process
Tk 3.4 mil (US$50,000) Tk 27.2 mil (US$400,000)
• Total cost Tk 37.4 mil (US$550,000) (complete kiln with mechanized back processes and land acquisition) • Financing: Debt to equity ratio: 65:35: Loan amount Tk 24.3 mil Equity Tk 13.1 mil
Investment Profile • Comparative production cost: HHK Technology:
Tk 1.35/per brick
Current technology:
Tk 2.10 per brick
• Rate of return:
>30%
• Life:
>20-year life
• Payback period:
2 to 3 years
Investment Risks • Can the entrepreneur manage the larger operation? • Will there be well-trained staff to support and operate the business? • Will government fiscal policies encourage energy efficient brick businesses? Full GEF project is designed to reduce these risks