PROJECT NAME

Anshan

SECTOR

Iron and steel

Area of Expertise

Waste Heat and Waste Gas to Power
Anyan
China

Anshan

Achieving Real Emission Reductions through the Transferring of Advanced Technologies
Camco is working with Anshan Iron and Steel Group Corporation, one of China's top three iron and steel producers, on a series of large scale energy efficiency projects.The Anshan projects involve the capture of waste heat and waste gasses from the steel and coke making processes and their utilisation in newly installed combined cycle power plants (CCPP). Once fully installed the total CCPP capacity will be 504 MW, delivering greenhouse gas emission reductions equal to 3,264,608 tCO2e per annum through displacing power that would otherwise be taken from the local power grid that is dominated by coal fired power.Recycling and utilisation of waste gases within the coke production process is not common practice in China where the waste gases are commonly flared or vented into the atmosphere. These gases have a low heat value and require cleaning to remove impurities meaning they are not easy to utilise.The project can be split into two parts:The waste gas to power part of the project captures the combustible waste gases from the coke oven and blast furnace, and uses them to produce electricity in custom modified gas turbines that are specifically designed to burn the low heat value fuel. The system incorporates both gas and steam turbine technology that is not yet established in China.The waste heat to power part of the project employs advanced Coke Dry Quenching technology to capture the waste heat from the coke production process and utilises it to generate power.Coke is made by heating coal to very high temperatures in the absence of oxygen. The quality of the coke produced is affected materially by the speed at which it is allowed to cool, so rapid cooling, or 'quenching', is used to produce coke of a high grade. Camco has identified 25% utility cost savings for a leading global premium drinks business at a number of their breweries and a glass bottling plant in Africa and the Caribbean. The quenching process releases a lot of heat, and standard industrial practice involves cooling the red hot coke with water (wet quenching), a process by which it is not possible to recover the waste heat. Dry quenching, however, circulates inert gases that act as a coolant, allowing the waste heat to be removed and utilised. Dry quenching also releases less toxic vapours and uses less water.Camco’s work with Anshan Iron and Steel Group Corporation involved providing extensive technical advice and expertise, and securing DNA approval within one week of contract signature - a project record.We provided a range of services to our client, advising on risk management strategy and guiding the projects through a difficult registration process by ensuring that the designs met the relevant CDM requirements. The registration process was difficult because prior to registration the CDM Executive Board demanded a comprehensive and challenging review of the Anshan projects. This successful review process highlights Camco's market leading capabilities and depth of expertise in achieving the CDM registration of large, complex carbon asset projects.