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.