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Why is HZZK Different From and Superior to Other Zig Zags?
HZZK clean brick-firing technology has completely unique core design and operational features, not replicated in any other kiln or zig-zag kiln version.
Proven to achieve close to 100% fuel combustion, the authentic HZZK design successfully targets inefficient fuel combustion in the brick kilns of developing countries that cause extreme pollution and worsening global warming.
Recent attempted copies are nowhere near the real thing and merely changing the brick setting or increasing the chimney height or size to get more suction is far from the authentic Habla design. Efficiency increases measured when replacing the Fixed Chimney Bull’s Trench Kiln with zig-zag copies in South Asia indicate marginal improvements only of around 10%-20%.
In 1994 the Habla family challenged the promotion of inauthentic copies described as ‘Habla Kilns,’ and zig-zag was renamed the Indian Zig-Zag High Draught Kiln. In 2010 the Indian Government (BEE) identified Habla as the inventor and source of the original arch-less zig-zag firing technology.
There have been issues with IP protection regarding technology transfer in developing countries. Patent protection is insecure, and one or two demonstration kilns would only exacerbate the problem of copying.
Widespread deployment of authentic HZZK technology using unique design, operational and rapid construction techniques will reduce CO2 and GHG emissions by more than 50%, eliminate more than 90% of Black Carbon (PM2.5), and cut all fuel consumption by more than 50%.
HZZK is Differentiated by:
- Efficient use of fuel reducing energy consumption, using high, controlled temperatures.
- The movement of the fire through stationary bricks, using less energy. As opposed to, the tunnel kiln, which uses energy to move bricks through a stationary fire zone.
- Efficient firing process through the use of a long fire zone, rapid airflow and unique components.
- The excellent control of the fire and the low brick setting height. HZZK is ideally suited to fire perforated bricks and thin-walled hollow large clay blocks. This conserves topsoil, minimises land degradation and reduces energy requirements for the production of bricks and clay products.
- Almost complete combustion due to high, controlled temperatures.
- Efficient use of generated heat, which is recycled in a continuous process, using a unique heat recovery process.
- Significant efficiencies in drying and cooling of bricks.
- Small construction footprint that can be quickly built with less masonry.
- Long fire zone enabling almost complete fuel combustion and fuel efficiency.
- Roof – offering significant workforce and economic benefits.
- No tall expensive chimney necessary– minimising fuel wastage, workplace pollution and construction costs.
- Scalable operating modes either continuous or semi-continuous.
- Power source flexibility.
- Easily mechanized technology.
The HZZK Difference: a Positive Impact on Workers
- Improves health outcomes of all workers and communities.
- Promotes safe, sustainable work practices and the dignity of all workers.
- Uses and upgrades skills of existing workforce whilst maintaining employment.
- Significantly reduces GHG emissions, CO2 and short-lived climate pollutants (SLCP’s) particularly Black Carbon (soot).
- Improves agricultural outcomes, locally and regionally.
A Key HZZK Difference: Improved Economics
- Significant fuel savings, increase profits
- Can incorporate renewable energy sources including green hydrogen
- Production of consistent, quality, saleable bricks increases profits
- Construction costs are lower
- Maintenance costs are lower
- The payback period is short
- Carbon credit generation is possible
- Reduces annual foreign exchange expenditure on imported coal for brick firing. Nepal spends a reported US$153.7 million p.a on coal