Carbon peak carbon neutral | Take the green and low-carbon development road of cement industry well

The cement industry is one of the major areas of carbon emissions in the country, accounting for about 13% of the country's total carbon emissions in 2020. Effective control of carbon emissions in the cement industry is the only way to help China achieve the goal of carbon peak and carbon neutrality. To practice the strategic deployment of carbon peak carbon neutrality with practical actions and strive to achieve the "double carbon" goal in advance is an important economic responsibility, political responsibility and social responsibility in front of the cement industry at present and in the future.

As a key state support

One of the 60 large cement enterprises (groups)

And the country's largest special cement production base

China can build Gezhouba cement company

We have always adhered to the concept of green development

Actively Implementing the Action Plan for China to Build 30·60 (White Paper)

Around the "electricity saving, coal saving, carbon reduction, emission reduction" four major goals

We will continue to strengthen institutions, mechanisms and capacity building for energy conservation and emission reduction

Give full play to the exemplary and leading role

Take the green and low-carbon development road of cement industry

Strive to build a first-class building materials provider

Tap the potential inward/Strive to achieve carbon peak ahead of time

We will actively eliminate relatively backward production capacity

"As early as 2014, we established the general idea of strengthening source governance, on the one hand, took the initiative to declare to the Hubei provincial government, and took the lead in starting the work of capacity reduction in China." On the other hand, we actively look for alternative raw materials and actively study the use of industrial solid waste to replace natural raw materials, reducing carbon emissions from the source." Gezhouba Cement Company (hereinafter referred to as "cement company") production director Xie Jianfeng said.

From 2014 to 2015, cement companies eliminated a total of 4.257 million tons of relatively backward production capacity, becoming the largest enterprise in the cement industry in Hubei Province at that time. Research and expand the use of phosphogypsum, desulfurized gypsum, steel slag, electric furnace slag, fly ash and other industrial solid waste, instead of natural raw materials, every year to consume various types of industrial solid waste millions of tons, carbon reduction of more than 300,000 tons.

Thanks to the liberation of ideas, cement companies focus on long-term strategic planning and forward-looking layout, the implementation of a series of equipment upgrading and technological innovation, and further promote the enterprise to the "two types and one green" (that is, environmentally friendly, resource-saving, green recycling industry) green low-carbon industrial development road.

Energy management system

In terms of equipment upgrading, the application of energy management system is an important symbol of the cement company's energy saving and emission reduction to a higher level.

The system integrates process monitoring, energy management and energy dispatching, implements centralized monitoring and management of energy consumption data of power system, power system and drainage system, realizes automatic, efficient and scientific management of the whole process from energy data collection - process monitoring - energy media consumption analysis - energy consumption management, and controls the progress of energy saving and consumption reduction from the source and details. It has greatly improved the overall level of energy management.

At the same time, the cement company also introduced advanced cement pure low-temperature waste heat power generation technology in the affiliated kiln line enterprises, and all the supporting construction of pure low-temperature waste heat power stations. By the end of 2020, the annual power generation will be about 460 million KWH, equivalent to saving 56,000 tons of standard coal and reducing 158,000 tons of carbon dioxide every year.

Graded combustion technology transformation project

In terms of technological innovation, cement companies have significantly reduced energy consumption through motor transformation, graded combustion technology transformation, low-nitrogen burner application, kiln head sealing technology transformation, and high-temperature fan air compressor system upgrade, among which the emission concentrations of particulate matter, nitrogen oxides, and sulfur dioxide are all lower than national emission standards.

After the systematic transformation between 2015 and 2020, the CO2 emissions of the cement company under the same clinker production have been reduced by about 1.2 million tons compared with 2015; The production of 1 ton clinker, coal consumption decreased by 12%, electricity consumption decreased by 7%, and the comprehensive energy consumption per unit product reached the advanced level of the national standard.

Through the combination of power saving, coal saving, carbon reduction and emission reduction, the cement company can reduce 672 tons of nitrogen oxides, 48.6 tons of sulfur dioxide and 850,000 tons of carbon dioxide every year, which is equivalent to planting 2,333 hectares of forest, and transform the concept of "green water and green mountains are Jinshan and silver mountains" into vivid reality with practice.

"In order to further implement the requirements of the China Can Build 30·60 Action Plan (White Paper) and promote the implementation of the measures of the two-tier group to implement carbon peak carbon neutrality, we are formulating our own Action Plan to implement the strategic goal of Carbon Peak and carbon neutrality according to our own development status, clear the timetable and path map, and are formulating our own Action Plan to implement the Strategic goal of Carbon Peak and carbon neutrality." Zou Xingfang, director of the quality and Environmental Protection Department of the cement company, said, "It is preliminarily expected that the company will reach the carbon peak in 2027 in advance, and the carbon emission per unit of cement products will be reduced by 60% in 2060 compared with 2027, and carbon neutrality will be achieved through decarbonization technology and negative carbon projects."

Restore green mines under management

With the further implementation of the concept of green development, cement companies have a deep understanding of the dialectical relationship between enterprise development and ecological protection, vigorously promote the green transformation of mining, incorporate the construction of "green mine" into the company's long-term development plan, and continue to increase technological innovation and introduction through the establishment of a digital and intelligent control system that runs through the whole process of mine management. Effectively enhance the green development and utilization of mineral resources and scientific and technological innovation driving ability, belonging to Zhongxiang, Dangyang, Laohekou, Yicheng, Jiayu, Shimen and other six companies have been included in the national green mine list.

Extend/help the national carbon market construction

Participated in the country's first spot forward trading of carbon emission rights

While doing their own energy saving and emission reduction to achieve low-carbon development, cement companies also actively participate in carbon market trading.

As the first batch of carbon emission control enterprises to be included, cement companies have 8 controlled emission enterprises in Hubei Province, with clinker production capacity of 17 million tons and annual carbon emissions of more than 13 million tons, accounting for more than 5% of the total quota of the province. After 7 years of pilot carbon market practice, the company's carbon asset management from scratch, from easy to difficult, from extensive to detailed, has gradually formed two unified management of "carbon verification and carbon trading", opened up its own characteristics of carbon asset management mode.

"We have participated in the country's first CCER carbon crowdfunding project launched in Hubei Province, the country's first carbon emission rights spot forward trading products, etc., through a series of technological innovation and management innovation, the carbon emission compliance rate in 5 years has reached 100%, and the physical coal consumption per unit of clinker has decreased by more than 12%. Clinker comprehensive power consumption decreased by 7%, annual carbon emission reduction reached 400,000 tons, successfully won the first prize of the national cement industry carbon trading test, Hubei Carbon Market 2019 'Compliance Model Award', Hubei Carbon Market 'Emission reduction Contribution' award and other honorary titles." Referring to the effectiveness of participating in carbon trading, Xia Feng, senior director of the quality and environmental protection management department of the cement company, said proudly.

"Not only do we have a professional department responsible for carbon verification, carbon trading and carbon assets, the company also issues a professional market report every year, anticipates and evaluates this year's carbon market trading, and arranges trading plans. Now, the first compliance cycle of the national carbon market has been launched, and the national carbon market has entered a new stage of development. We will continue to explore and optimize the carbon asset carbon financial management model, increase the management system and talent team construction, deepen the carbon market, and use market-oriented means to help carbon peak and carbon neutrality." Facing the future, Xia Feng is full of confidence.

Jiayu cement kiln collaborative disposal of contaminated soil project

Cement companies' efforts to reduce waste and green up do not stop there. Cement kiln collaborative waste treatment is the company's environmental protection core business in recent years.

Cement kiln collaborative solid waste disposal system integration technology and engineering application technology, with strong solid waste comprehensive treatment capacity, can provide personalized system solutions for municipal solid waste treatment, municipal sludge treatment, contaminated soil and hazardous waste treatment.

Up to now, the cement company has built four cement kilns in Laohekou, Songzi, Yicheng and Dangyang to coordinate the disposal of domestic waste demonstration line, the annual disposal of domestic waste is more than 500,000 tons, compared with the traditional landfill process of domestic waste, the annual carbon dioxide emissions can be reduced by nearly 400,000 tons, save more than 110,000 tons of clay raw materials, and save more than 140 acres of land. Good domestic waste "reduction, resource, harmless" disposal effect, so that the cement kiln has become a part of the urban infrastructure environmental protection facilities, with the town hand in hand, green development.

"We plan to continue to increase the scale of cement kiln collaborative disposal of domestic waste, contaminated soil and hazardous waste disposal, by 2025 basically achieve the full coverage of kiln line enterprises in Hubei Province collaborative disposal business, and explore the gradual expansion of combustible solid waste disposal scale, and strive to build a cement kiln alternative fuel demonstration line by 2025, improve fuel replacement rate." Said CAI Zheng, head of Jie New Technology Company, which owns the cement company.

In the next stage, cement companies will continue to tap their own energy saving and consumption reduction potential, adhere to technological progress and scientific and technological innovation as the guidance, accelerate digital transformation, actively introduce and transform low-carbon technologies, promote the application of energy saving and efficiency and deep emission reduction technology research, and strive to build a green transport industry chain. Through the promotion and application of alternative raw materials, carbon capture utilization and storage (CCUS) technology and energy saving and emission reduction new equipment, effectively reduce carbon emissions, help the cement industry to achieve carbon peak in advance, respond to the national carbon peak carbon neutral 30·60 goals and tasks with firm actions, and continue to contribute to the basic realization of the beautiful China construction goal in 2035.