Carbon neutrality in cement industry requires' disruptive 'fuel technology (Industry Frontier)

In addition, it is necessary to promote the innovation of traditional production and management mode of cement enterprises to adapt to the industrial technological revolution; Promote and solve a series of problems such as biofuel engineering technology, cement industry value engineering technology, biomass gasification technology upgrading and efficiency improvement, and large-scale industrial application.

Among them, the most important is to achieve the technical breakthrough of high temperature biogas firing temperature at 1700℃ in rotary kiln. Previously, the team of Wu Chuangzhi, director of the Guangzhou Energy Research Institute of the Chinese Academy of Sciences, successfully realized the industrialization breakthrough of the open push steel heating furnace using biological gas burning 1300℃ rolling steel in the steel project of Shenzhen Disen Huamui, and stable operation for 3 years.

CCUS technology is still difficult to be industrialized

Bio-gas technology to reduce carbon burden

On May 18, the International Energy Agency (IEA) released its annual report proposing a roadmap for carbon-neutral technologies: most of the CO2 reductions in global net zero emissions in 2030 will come from technologies that are actually available today (existing technologies), and nearly half of the reductions in 2050 will come from technologies that are currently in the demonstration or prototype stage (future technologies).

The report makes clear that CCUS technology (carbon capture, utilization and storage technology) can be used to address emissions from existing energy assets, such as cement, which is difficult to reduce carbon. Support the rapid expansion of low-emission hydrogen production and removal of some carbon dioxide from the atmosphere, in areas such as electricity where fossil fuels cannot be easily or economically replaced, and where limited supplies of sustainable bioenergy cannot meet demand, hydrogen and hydrogen-based fuels will fill the gap.

The energy utilization of biomass resources by human beings has experienced three generations of technologies. The traditional fire cooking and heating in rural areas is the first generation of bioenergy technology, and the average energy utilization efficiency is about 13%. Direct combustion of biomass for power generation or heating is the second generation of bioenergy technology, and the energy utilization efficiency is about 30%. Biomass gasification is the third generation of bioenergy technology, and the energy utilization efficiency is about 85%. At present, the biomass direct combustion power generation and heating industry of the second generation of bioenergy technology is gradually withdrawing from the market, and its maturing biofuel market is giving way to the third generation of bioenergy technology - bio-gas technology.

Although the IEA report has clarified that CCUS technology can be used in industries that are difficult to reduce carbon, such as cement, and conch cement has also achieved CCUS technology breakthroughs, it will take time to truly realize industrialization. Therefore, the cement industry cannot rely on the uncertain CCUS technology to achieve carbon neutrality. In the era of wind and light power generation has achieved parity Internet access, about 3 billion tons of limited biomass resources in China should not be used for direct combustion power generation or heating, applied to the development of biomass gasification technology, and priority for cement, steel and other industries that are difficult to achieve carbon neutrality.