Continue to Undertake National Key Research Projects and Contribute to Low Carbon Development of the Industry

For more than 20 years, Professor Cui Suping and her team, from the Faculty of Materials and Manufacturing, BJUT, have been undertaking national research projects.The team has established the theory and method for quantitative assessment of comprehensive environmental load of materials based on life cycle analysis, and broke through the key technology controlling the performance and the whole-process environmental load of cement and other basic materials, contributing to the high-quality development of industrial enterprises. In combination with the needs for green and low-carbon development among the industry, the team has supported and prepared over 20 national, industry, and association standards such as low-carbon product certification, type III environmental product declaration, and green design product certification over the past 5 years. Professor Cui and her team, together with authoritative organizations, have completed the greenhouse gas accounting, low-carbon product certification and carbon footprint assessment for hundreds of enterprises, a massed abundant data of greenhouse gas emission level and established the material life-cycle assessment database. Furthermore, Prof. Cui and her team have developed series of green standards to help the cement industry implement policies of staggered peak production and capacity reduction and replacement. During the 13th Five-Year Plan period, due to those policies, carbon dioxide emission was reduced by 1.72 billion tons and more than 100 million tons of coalwere saved.

Process Environmental Load Control Technology Supports the Green Transformation of Enterprises

In cooperation with BBMG Corporation and other key enterprises, the team have conducted researches of the design and application of low-carbon cement, invented the technology for controlling the performance of cement clinker made of urban sludge, solved the technical problem on the effects of the complex composition of urban sludge on the quality of clinker; they also invented highly-efficient and environmentally-friendly denitration catalytic material and SCR denitration efficiency control device, and reduced the comprehensive environmental load of cement production by 25%.

After the technologies are applied in BBMG Corporation (BBMG) and other enterprises, the result of on-site verification shows the comprehensive energy consumption per unit product is reduced by 4.39%, the overall greenhouse effect is mitigated by 5.78%, and the consumption of nonrenewable resources is lowered by 12.25%. What’s more, during the 13th Five-Year Plan period, Cui’s technological results have assisted BBMGBCP to replace 31% of fuels and 10% of other fuels powering the disposal of garbage in the company. Besides, the coal consumed for cement production decreased by 5.28% year on year, a reduction of 537,000 tons of standard coal and the equivalent of 1 million tons of carbon dioxide emissions.

Low Carbon Cement Materials with Low Environmental Load Serve National Key Projects

By undertaking the national project, Prof. Cui and the team have tackled the problem of the quantitative assessment of comprehensive environmental load of cement and other basic materials; they made the break through in the key technology of collaborative regulation on performance and environmental load of highly cementitious clinker composite system, invented the regulation method of volume stability for such composite system, and prepared low-carbon durable cementitious materials with the low environmental load by working together with enterprises. Compared with traditional cement which is made from silicate, such cement material can reduce carbon emission by 10%, improve the impermeability by 10%, increase the comprehensive performance index by 25%, and therefore, the environmental impact of functional units is greatly lowered. Silicate-sulphoaluminate composite cementitious materials are used in Beijing Daxing International Airport, Xiong’an New Area, Beijing Subway, Beijing-Guangzhou Railway and other national key projects, which deal with difficulties caused by impermeability in underground engineering.