Conch case study


Courtesy of Camco Clean Energy Company

A major advancement for industrial energy efficiency in China made possible through technology transfer

Camco is working with Anhui Conch Cement Company Limited, the largest cement producer in China, on a programme of energy efficiency projects at multiple Conch production facilities. The projects all use Japanese advanced high efficiency waste heat recovery technology, never before commercially financed in China, and utilise the waste heat for onsite power generation.

This project is a major step towards improving China's industrial efficiency. It illustrates how carbon financing can be used to make energy efficiency projects economically viable, and shows how large producers can leverage their scale to achieve large aggregated emission reductions across their portfolio.

The projects all capture waste heat from the cement making process that was previously vented into the atmosphere. It is utilised to produce power in onsite power plants ranging in size from 8 to 47 MW. Once fully installed, the Conch series will collectively deliver greenhouse gas emission reductions equal to 3.3 million tCO2e per annum through displacing power that would otherwise be taken from the local grid that is dominated by coal fired power.

China's cement sector is over 33% less energy efficient than the global average, so importantly this series of projects will improve the energy efficiency of China's cement sector per unit of output. Also, by harnessing the waste heat, the temperature of the vented air is reduced, resulting in significant reductions in water usage.

In 1998, a Japanzese heavy industries company successfully demonstrated a similar technology at Conch's Ninguo facility, but it was not adopted within the Chinese cement sector as it has never been financially viable. Camco have worked closely with Anhui Conch Cement Company Limited enabling them to access carbon financing to make this series of projects possible.

This is the first commercially financed advanced technology high efficiency waste heat recovery project in China's cement sector, and the first project of its kind not to require an international grant.coal fired power.

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