Page 14 - Zero is Possible - Volume 2 Grey

Liverpool Asphalt Plant
Energy
UNITED KINGDOM Asphalt Increasing thermal

efficiency in asphalt

manufacturing

Opportunity Results
Reduce fuel consumption • Initial installation
of direct fired rotary at the Liverpool
aggregate dryers through mainstream plant
recovering waste heat. yielded a reduction
in fuel consumption
Solution & emissions of 11.7%
Lee Sleight By installing an air-to-air (13.82 kWh/t) in line
CEO heat exchanger within the with the 10% reduction
dryer’s feed-end exhaust estimated in the
duct, thermal energy feasibility study
from the dryer exhaust • Estimated annual
is utilized to preheat the carbon savings for the
incoming air before it Liverpool site 216 tCO2
enters the dryer. with a two year payback
• Estate wide
implementation
Anna Baker underway, target of 10
Sustainability sites per year
Director • Average CAPEX: 57 kCHF

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