水泥企业积极推进节能降碳

2022-09-13 10:01:02

目前,从水泥上市公司披露的绿色节能举措看,主要集中在减少能耗、引入新型能源、减少二氧化碳产生、对终端产生的二氧化碳进行进一步资源化利用等层面。

近日,中国建筑材料联合会发布《建材工业“十四五”发展实施意见》(简称《实施意见》),明确提出,2025年建材工业行业全面实现碳达峰,水泥等行业在2023年前率先达峰。业内人士表示,目前,从水泥上市公司披露的绿色节能举措看,主要集中在减少能耗、引入新型能源、减少二氧化碳产生、对终端产生的二氧化碳进行进一步资源化利用等层面。但是,很多技术仍然停留在技术层面,有待进一步推广。

水泥行业要率先实现碳达峰

《实施意见》明确,到2025年,建材工业形成与保障国民经济建设、满足人民高质量建材需求相适应的良性发展新格局;行业全面实现碳达峰,水泥等行业在2023年前率先达峰,水泥等主要行业碳排放总量控制取得阶段性成果,绿色低碳循环发展生产体系初步形成,生态宜业成为行业主流价值观,水泥、玻璃等主要行业绿色低碳发展达到国际先进水平。

“十三五”以来,建材工业绿色发展成效显著,万元增加值综合能耗和二氧化碳排放量总体呈现下降态势,2020年规模以上企业吨水泥熟料综合能耗比2015年下降3.6%。然而,建材行业能源消耗、二氧化碳排放、污染物排放总量在工业部门中仍然位居前三位,成为制约绿色低碳发展的重要瓶颈。预计到2025年,水泥产品单位熟料能耗比2020年下降3.7%,水泥窑使用替代燃料技术的生产线比重大于30%,水泥熟料总产能小于18亿吨(含),水泥行业能效达到标杆水平的产能比例达到30%。水泥行业清洁生产改造完成数量达到8.5亿吨。

中国建筑材料联合会表示,“十四五”建材工业发展目标主要分为绿色低碳、质量效益、结构优化、技术创新、智能化转型5个方面。在结构优化方面,2020年,水泥熟料总产能为20亿吨,到2025年水泥熟料总产能小于18亿吨(含),将减少2亿吨以上。

《实施意见》明确,加强重点行业和产品资源效率对标,编制主要行业节能降碳技术指南,推动存量项目节能降碳升级改造。在水泥、玻璃、陶瓷等行业逐步推动改造建设一批减污降碳协同增效的绿色低碳生产线,实现窑炉碳捕集利用封存技术产业化示范。

在优化能源消费结构方面,《实施意见》明确,支持行业实施燃料替代,利用垃圾衍生燃料、生物质燃料等可燃废弃物高比例替代燃煤,推动替代燃料高热值、低成本、标准化预处理,提升水泥等行业燃料替代率。严格控制化石能源消费,推进重点行业清洁生产改造提升计划,实施节能、节材、减污、降碳等系统性清洁生产改造,提高天然气等清洁能源在行业的应用比重。提高非化石能源消费比例,研发并推广使用风能、太阳能、生物质能、氢能等非化石能源替代技术,引导企业利用余热余压、替代燃料、分布式发电等,推行分布式清洁能源及储能一体化系统应用,提高能源利用质量和效率。支持鼓励建材企业就近大规模高比例消纳可再生能源。

上市公司积极践行绿色节能

从水泥上市公司披露的绿色节能举措看,主要集中在降低煤耗指标,利用工业废渣替代水泥熟料原料中的部分石灰石,减少二氧化碳产生。此外,部分水泥企业还将终端产生的二氧化碳进行进一步资源化利用。

海螺水泥表示,公司对部分熟料生产线实施了综合能效提升技改,广泛开展篦冷机升级改造、低氮分解炉改造、原料磨改辊压机、高效风机使用、新型隔热纳米材料使用等,同时使用燃煤促进剂,运用行业节能减排先进技术装备,全面降低煤耗指标,进而减少二氧化碳排放。同时,集团在可再生能源领域积极探索,继续推进光伏发电、替代燃料等清洁能源的使用,进一步减少化石燃料燃烧排放的二氧化碳。此外,集团持续推进智慧农业大棚项目,将二氧化碳作为生产有机蔬菜的农业气肥,实现了二氧化碳的资源化利用。

福建水泥表示,2022年以来,公司围绕国家“双碳”发展战略,规划低碳发展路径,不断发掘自身减排潜力,推进技术改进、设备升级、工艺优化。公司还在永安建福、顺昌炼石开展生料助剂、矿化剂、萤石等替代原燃材料试验,通过运用水泥行业先进的节能减排技术装备,努力降低公司煤电耗指标,从而达到减少二氧化碳排放的效果。公司积极寻找探索替代原料,使用粉煤灰、炉渣、煤矸石、铜渣等各种工业废渣,替代水泥熟料原料中的部分石灰石,采取控制低饱和比配料来降低天然石灰石的消耗,减少了二氧化碳的产生,同时,采用优化煅烧操作,减少了燃煤消耗。

节能降碳技术有待进一步普及

业内人士表示,水泥行业是环保合规排放及能耗双控、碳达峰重点关注的行业,在国家不断加大生态环境治理力度、推进降耗降碳的大环境下,企业需要不断加大投入,满足矿山整治、节能减排、降碳要求。

“未来一段时间,企业将在节能降碳方面持续发力,最终实现碳中和。具体措施与技术路径有很多个层面,概括起来主要分为减量化、能效提升、燃料替代、原料替代和碳捕集利用与封存技术5个维度。减量化主要包括混凝土结构替代、水泥及混凝土回收与再利用。能效提升主要包括水泥生产数字化、粉磨系统节能减排、熟料生产线烧成系统节能减排等技术。燃料替代主要包括固体废物燃料、生物质燃料替代传统燃料。碳捕集利用与封存技术主要包括碳捕集、二氧化碳封存与利用等。”另一位业内人士对中国证券报记者表示。

“不过,目前很多企业的尝试还停留在技术层面,未来有待进一步普及和推广。”上述业内人士强调。

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Correlation

In the first three quarters, BBMG achieved a sales volume of more than 60 million tons of cement clinker (the total sales volume of cement and clinker in the same period last year was 72.07 million tons), and the comprehensive price of cement clinker was about 245 yuan/ton (excluding tax); In the third quarter, the sales volume of cement clinker was more than 20 million tons, the comprehensive price of cement clinker was about 250 yuan/ton (excluding tax), which increased by 8 yuan/ton, and the gross profit per ton was 54 yuan/ton, which increased by 13 yuan/ton.

2024-11-20 09:26:17

As Dong Shihong said, "Carbon is the future". At the intersection of history and future, Shijing Science and Technology, with low carbon as its pen, helps the cement industry to depict a harmonious picture of green mountains, green waters and industrial prosperity, and casts a hard backbone of sustainable development in the blending of grey and green.

2024-11-04 09:35:58

Looking forward to the future, we still need to continue our efforts in breaking through the existing clinker system, innovating the design of new low-carbon clinker (new clinker), breaking through the time lag and multi-scale barriers, building a digital system without "gap" in the whole process, maximizing the value of data, and supporting low-carbon in the whole process (time-sharing power consumption, coal consumption, low-carbon ratio, etc.).

2024-10-29 14:07:23

On October 25, the "2024 China Cement Double Carbon Conference and the 12th Energy Conservation and Environmental Protection Technology Exchange Conference" continued brilliantly. Gao Dengbang, President of China Cement Association, Zhu Shengli, General Manager of Anhui Conch Group Co., Ltd., Lv Zhijian, President of Xinjiang Building Material Industry Association, Ma Weiping, Chairman of OCC, Jiang Dehong, Vice President and Chief Engineer of Tianshan Material Co., Ltd., Li Jian, Associate Researcher of China Academy of Environmental Sciences, and Fan Yueming, Professor of South China University of Technology. Zhuge Wenda, Chairman of Hubei Century Xinfeng Leishan Cement Co., Ltd., Yan Haochun, Technical Director of China National Inspection and Testing Holding Group and General Manager of Certification and Evaluation Center, China Architecture

2024-10-25 10:53:14

On October 24, the "2024 China Cement Double Carbon Conference and the 12th Energy Conservation and Environmental Protection Technology Exchange Conference" was held in Wuhu, Anhui Province. Gao Dengbang, President of China Cement Association, Zhu Shengli, General Manager of Anhui Conch Group Co., Ltd., Lv Zhijian, President of Xinjiang Building Material Industry Association, Ma Weiping, Chairman of OCC, Jiang Dehong, Vice President and Chief Engineer of Tianshan Materials Co., Ltd., Li Jian, Associate Researcher of Chinese Academy of Environmental Sciences, Fan Yueming, Professor of South China University of Technology, Zhuge Wenda, Chairman of Leishan Cement Co., Ltd., Century Xinfeng, Hubei, Yan Haochun, Technical Director of China National Inspection and Testing Holding Group and General Manager of Certification and Evaluation Center.

2024-10-24 16:55:38

Although the road of carbon emission reduction in the cement industry is full of challenges, through continuous technological innovation and industry practice such as "steel slag phase-separated clinker", we have reason to believe that the cement industry can surpass the "face-saving project", realize the real green transformation, explore a sustainable road of cement concrete development, and leave a cleaner and sustainable earth for future generations.

2024-09-24 14:31:59

Saint-Gobain continues to focus on the development and sustainability of new materials.

2024-07-11 11:27:11

Shandong Province issued the Action Plan for Upgrading the Building Materials Industry (2024-2026), which aims to promote the green, low-carbon and high-quality development of the building materials industry. The action plan focuses on the cement industry and puts forward the tasks of stable growth, structural adjustment, digital transformation, green manufacturing and safety improvement.

2024-07-01 17:05:09

Under the leadership of Dong Shihong, Shijing Science and Technology has never forgotten its original intention of "green", firmly anchored the concept of green development in the torrent of the development of the times, and painted a magnificent and vibrant panorama of green ecological industry with practical actions.

2024-06-20 09:47:34

Superior enterprises are encouraged to integrate inefficient production capacity in the city through market-oriented mergers and reorganizations, and gradually withdraw from cement clinker production lines of 2500 tons per day or less (except special cement).

2024-05-07 15:19:25

"Only when there is a practical effect can it be regarded as a real carbon reduction."

2024-04-26 10:22:19

Tao Congxi mainly analyzed the current situation of carbon emission in cement industry, the technical path of carbon emission reduction at home and abroad, the "3C" carbon neutralization technology in cement industry, and the "3C" carbon neutralization practice cases in cement industry.

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On March 29, the "2024 13th China Cement Industry Summit Main Forum and TOP100 Award Ceremony" was held grandly.

2024-03-29 18:00:30

The building materials industry is required to speed up the optimization and upgrading of the industrial structure, vigorously promote energy conservation and carbon reduction, and comprehensively improve the utilization rate of resources.

2024-03-25 14:07:30

The plan requires that by the end of 2025, the comprehensive energy consumption per unit product of cement clinker will be reduced by 3.7% compared with the end of 2020.

2024-03-21 10:28:24

Recently, Guigang Taini was awarded as an advanced collective of environmental protection and ecological civilization construction in Guangxi Zhuang Autonomous Region and an excellent industrial enterprise in Guigang City in 2023.

2024-02-28 11:56:46

Focus on reducing cement clinker production capacity in areas where limestone resources are scarce and air quality is poor, and support clinker production enterprises to carry out layout outside the province and transfer to key construction areas determined by the province. We will further study and implement the integrated withdrawal plan for cement clinker production lines with a capacity of 2500 tons per day or less.

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A large amount of carbon dioxide is emitted in the process of cement production, but the demand for housing and public buildings in most major cities around the world is still growing, which is contrary to the international consensus on reducing greenhouse gas emissions. How to reduce carbon dioxide emissions in the cement industry has become the focus of attention.

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The Net Zero Industrial Awards recognize and celebrate outstanding innovation in industrial decarbonization, focusing on people and projects that are revolutionizing energy-intensive industries and dramatically reducing greenhouse gas emissions. Cemex 's Solar clinker project is in partnership with cleantech company Synhelion, which developed the high-temperature solar thermal technology it uses