"China Cement Industry Green Development Summit Forum and Ultra-clean Emission Technology Exchange Conference" was successfully held!

On April 24, the "China Cement Industry Green Development Summit Forum and Ultra-clean Emission Technology Exchange Conference" sponsored by China Cement Network was successfully held in Changsha, Hunan Province. The theme of this

conference is "innovation-driven pollution reduction, carbon reduction and green development". Lv Wenbin, President of Hunan Building Materials Federation, Party Secretary of Hunan Cement Association, Party Secretary, Chairman and President of New Tianshan Zhongnan Cement; Zhang Zhenkun, Chairman of China Cement Network and CEO of Asia Cement (China) Holding Company; Chen Zhongsheng, Vice President of Shandong Shanshui Cement Group Co., Ltd., Chairman Unit of China Cement Network; Wu Shangan, Professor-level Senior Engineer of Hefei Cement Research and Design Institute and former Secretary-General of Bag Committee; Wang Zuojie, Professor of Tianjin Cement Industry Design and Research Institute; Li Weidong, Vice President of Ningxia Building Materials Group Co., Ltd.; Fan Shaojie, Executive Vice President of Shijiazhuang Quzhai Cement Co., Ltd., Chairman Unit of China Cement Network; Jia Huaping, Senior Consultant of China Cement Network; Wang Wenhui, General Manager of Henan Tailong Building Materials Group Co., Ltd., Chairman of China Cement Network; Deng Wei, Chairman of Henan Sinoma Environmental Protection Co., Ltd.; Wu Xiaohuan, Vice General Manager of China Gezhouba Group Cement Co., Ltd., Chairman of China Cement Network; Sinoma

Reasonable profit is the prerequisite for the development of the industry. Lv Wenbin appealed that we should speed up the formation of industry consensus, resolutely implement peak staggering production, put an end to vicious market competition, jointly maintain the hard-won development situation, and promote China's cement industry into a new era. In the future, Zhongnan Cement will continue to promote technological innovation and management innovation, continue to improve the level of intelligence, and explore new ways of energy saving and carbon reduction; Hunan Building Materials Association and Cement Association will also actively play the role of organization and coordination to promote the continuous progress of the industry in green environmental protection, intelligent upgrading and other fields.

China Cement Network has been taking "enhancing the image of the industry, promoting technological progress and leading the industrial Internet" as its responsibility, giving full play to the advantages of the platform, relying on digital services such as big data and industrial "brain" to provide all-round intellectual support for the green development and low-carbon transformation of the industry. In the future, China Cement Network will continue to use its own experience and resources to work with the whole industry to promote the green and high-quality development of China's cement industry.

In addition, Wu Shangan pointed out that the technological progress of the green development of the cement industry is endless; the emission of VOCs from the co-disposal of solid waste by cement kilns, the noise of the cement industry and the treatment of mercury are issues that cement enterprises should pay attention to on the road of green development.

Wang Zuojie introduced the high temperature and high efficiency filter catalytic converter (FSCR) technology in detail and pointed out that there are many ways to solve the ultra-low emission of cement waste gas. Once the strict ultra-low emission policy is enforced, the end treatment is the most important. To achieve ultra-low emission of nitrogen oxides, SCR catalytic denitrification technology is the inevitable choice; The micro-dust high temperature SCR scheme is the most worthy of discussion of the reliable way of denitration; FSCR preheater top technology achieves ultra-low emission of cement waste gas dust and nitrogen oxides, emission reduction and carbon reduction, which is an innovation of environmental protection technology and a revolution of cement production technology.

However, Jia Huaping stressed that although the same is oxygen-enriched combustion, but different industries, different production lines, their working conditions will not be the same, the effect of oxygen-enriched combustion will not be the same, do not simply blindly copy.

Song Xinke pointed out that the dual-carbon target has put forward requirements for the deep decarbonization transformation of the cement industry; improving energy efficiency is the most effective "no regrets" measure at the current stage with mature technology; it is expected that the carbon emissions of the cement industry will peak in the middle of the "14th Five-Year Plan", and the emissions in 2030 will be reduced by 15% -18% compared with 2020; Under the vision of carbon neutrality, the cement industry has a difficult task to achieve net zero emissions, and needs to deploy CCUS and other emerging decarbonization technologies. At present, there are some commercial application cases of new decarbonization technologies around the world, which make it possible for the industry to achieve zero or even negative emissions.

Shao Mingzhu said that the key for the dust collector to achieve ultra-low dust emission is to reduce the filtration wind speed and improve the dust removal efficiency; the ammonia spray gun is usually arranged at the cone of the C5 cyclone in the precise denitration technology, which is easy to cause skinning of the spray gun, and there is a risk of blocking the feeding pipe; Staged combustion technology can effectively reduce NOx emissions, but it has an impact on the stability of kiln conditions. Easy to cause

Wei Yu pointed out that the optimistic expectation is that the cumulative installed capacity of photovoltaic in the cement industry is expected to reach 7.2G W in 2030, with a compound growth rate of 28.53%, accounting for 0% of the total installed capacity in the country. There are opportunities and challenges for cement enterprises to transform into new energy industries: First, the market of photovoltaic industry is mature, the concentration is high, and the risk of overcapacity is at hand; The second is that the energy storage and hydrogen energy will have a large market space in the future, but the cost is relatively high and the commercialization has just started; the third is that the technology changes rapidly, especially the new energy storage and green hydrogen technology is not yet mature; the fourth is the double-edged sword of integration: the integration of photovoltaic industry chain, the integration trend of wind and solar hydrogen storage and wind and solar hydrogen storage vehicles.

Gao Yuzong pointed out that the use of alternative fuels in China's cement industry has great potential for development. Most cement companies are still not using alternative fuels. Under the current technical conditions, it is technically feasible for China's cement industry to achieve a fuel substitution rate of about 40%. It is not excluded that individual enterprises in individual regions can achieve a substitution rate of 80% or even higher under special conditions. The final substitution rate mainly depends on the market and policies. However, at this stage, we should focus on promoting biomass alternative fuels.

or even 30mg/Nm3 , which meets the environmental protection requirements of ultra-low emission, and is generally recognized as the most efficient and reliable deep denitration technology. In addition, Lei Hua also introduced in detail the "high temperature electrostatic precipitator + SCR denitrification integration technology".

by 80% and ammonia escape by more than 99% on the basis of front-end treatment, which can fully meet the requirements of ultra-low emission targets. The operating cost is only increased by about 1 yuan/ton of clinker, leaving room for meeting more stringent environmental requirements in the future.

. The low-dust/micro-dust flue gas flows from bottom to top through the SCR catalyst layer (only one layer of catalyst is arranged) arranged on the top of the filter bag clean air chamber, so that the NOx is below 50 mg/m3 , and the problems of uneven mixing of ammonia nitrogen and excessive ammonia escape are effectively solved. The flue has serious ash deposition, the flue gas flow rate of the catalyst layer is uneven, and the catalyst is blocked, poisoned and worn seriously, so as to realize the efficient treatment of the flue gas.

; the filling amount of the catalyst is large, and the investment cost is high.The Dinos cement kiln SCR denitrification catalyst significantly increases the catalyst performance advantages by changing the catalyst form, anti-alkali poisoning, anti-arsenic poisoning, anti-thallium poisoning, optimizing the layout, and improving the soot blowing measures.

https://img7.ccement.com/richtext/img/hcs2qyhcczb1682329440072., she said, The high-efficiency intelligent denitration system has the advantages of intelligence, accuracy, high cost performance, high stability, strong compatibility and high denitration efficiency. Deep learning has been deeply coupled with the efficient and precise denitrification system and the kiln and mill expert control system for automatic optimization, ensuring the precise and energy-saving operation of the process control system. Machine learning enables the optimization of the whole process of cement production and management, and ultimately realizes the self-operation, self-optimization and self-optimization of the whole process of cement production management system.

, easy to form dense blocks such as CaSO4 , so the catalyst is easy to be blocked. The rake-type soot blower and sonic soot blower of the enterprise can effectively solve this problem.

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