关键数据集信息 | |
位置 | CN |
地域代表性说明 | 中国联合水泥公司 |
名字 |
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数据集使用建议 | 在使用此数据集进行水泥相关产品的生命周期评估(LCA)时,确保系统边界包括从原材料和能源生产到寿命终结阶段的所有阶段。重点关注使用NSP技术、煤炭消耗、现场能源回收和排放控制等关键过程。在影响计算中考虑所记录的能源回收、除尘和脱硝的特定效率。同时,承认固体废物的再利用以及替代成分对环境性能的影响。此数据对于使用与提供的5000t/d和2500t/d生产规模相匹配的NSP技术的中国水泥厂是准确的。 |
产品或过程的技术目的 | 该数据集表示包含6-20%替代成分的水泥生产过程,并且实现32.5RMPa压缩强度。所述水泥满足早期强度水泥的要求,在第三天的抗压强度超过15 MPa。主要是,这种类型的水泥用于建筑应用,在早期强度增益至关重要。该生产包括使用新型悬浮预热器(NSP)和综合混合固体废物的措施,促进中国水泥工业的环境可持续性。 |
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类名
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层次结构级别
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关于数据集的一般性意见 | 早强水泥的第三天抗压强度大于15 MPa,第28天抗压强度为32.5 MPa。主要的水泥生产方式—新型悬浮预热器(New suspension preheater,NSP)—被应用于中国水泥工业。有三个主要的生产过程:粉煤和原材料准备过程,包括生料的传输、研磨、均化和存储,以及煤的研磨和存储。在焚烧过程中,研磨和混合的生料被输入预热器,然后在煅烧炉中以950℃和60%煤分解。在煅烧炉中,石灰石分解率约为95%,在窑中分解率为5%。分解后的材料落入窑中,在1400℃以上的温度下与40%煤燃烧成熟料。在成品加工过程中,通过磨煤机将熟料、矿物添加剂和石膏细粉磨成水泥。生料在预热器中悬浮并通过回收的热空气加热。 |
版权 | 不 |
数据集的所有者 | |
参考定量 | |
参考流 |
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技术代表性 | |
技术说明,包括后台系统 | The main stream of cement production – new suspension preheater (NSP) – is applied in the Chinese cement industry. There are three primary production processes: The pulverized coal and raw material preparation process, including the transfer, grinding, homogenization, and storage of raw materials, and the grinding and storage of coal. In the incineration process, the ground and mixed raw materials are inputted into the preheater and then the calciner and decomposed with 60% coal at 950 ◦C. The limestone decomposes to about 95% in the calciner and 5% in the kiln. The decomposed materials fall into the kiln and are incinerated to clinker with 40% coal at a temperature of over 1400 ◦C. In the finishing process, the cement is produced when the clinker, mineral additions, and gypsum are granulated finely by a grinding mill. The raw materials are suspended and heated by recycled hot air in the preheater (Hasanbeigi et al., 2010). |
流程图或图片 | |
数学模型 | |
建模说明 | 使用32.5 RMPa强度等级的1吨水泥作为功能单位(FU)。系统边界涉及原材料和能源生产、道路运输、原材料破碎、熟料生产、水泥磨和包装、废热能回收、直接排放、现场烟气处理和水泥厂中固体废物再利用。 |
生命周期清单方法和分配 | |||||
数据集的类型 | LCI result | ||||
偏离生命周期清单方法原理/解释 | 无 | ||||
与建模常数/解释的偏差 | 无 | ||||
数据来源、处理和代表性 | |||||
偏离数据截止和完整性原则/解释 | 无 | ||||
数据选择和组合原则 | 水泥生产的操作过程(如原材料和能源消耗、运输距离、能量回收、直接排放、废弃物处理、资本成本)的年度平均数据是从中国联合水泥公司的调查中获得的。 | ||||
偏离数据选择和组合原则/解释 | 无 | ||||
偏离数据处理和外推原则/解释 | 无 | ||||
用于此数据集的数据源 | |||||
采样程序 | 中国联合水泥有限公司,占中国水泥市场的9.45%。根据《2014年中国水泥年鉴》的数据,采用新型悬浮预热器技术的5000t/d和2500t/d水泥生产线数量分别占中国所有水泥生产线的56.1%和28.3%。规模为5000t/d和2500t/d的生产线可能具有相对准确性,反映了中国水泥生产的主要特点。参数:数值;水泥生产线规模:5000t/d×1,2500t/d×2;水泥生产技术:新型悬浮预热器;发电回收效率:30%;除尘技术:干法袋式除尘;除尘效率:99.95%;脱硝技术:选择性非催化还原法;脱硝效率:50.00%。 | ||||
完整性 | |||||
产品模型的完整性 | No statement | ||||
验证 | |||||
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数据生成 | |
数据集生成/建模 | |
数据输入方式 | |
时间戳(上次保存) | 2024-03-19T21:18:09+08:00 |
出版和所有权 | |
UUID | 4f11855f-8596-4687-ad7f-f93567de75d5 |
最后修订日期 | 2024-04-20T14:41:53.857556+08:00 |
数据集版本 | 00.01.005 |
永久数据集 URI | https://lcadata.tiangong.world/showProcess.xhtml?uuid=4f11855f-8596-4687-ad7f-f93567de75d5&version=01.00.000&stock=TianGong |
数据集的所有者 | |
版权 | 不 |
许可证类型 | Free of charge for all users and uses |
输入
流类型 | 分类 | 流 | 位置 | 平均量 | 计算量 | 最小量 | 最大量 | ||
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Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 796.91 kg | 796.91 kg | ||||||
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Waste flow | Wastes | 280.13 kg | 280.13 kg | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 44.65 kg | 44.65 kg | ||||||
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Product flow | Wastes / Mining waste | 35.94 kg | 35.94 kg | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 26.55 kg | 26.55 kg | ||||||
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Waste flow | Wastes / Post consumer waste | 55.06 kg | 55.06 kg | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable material resources from ground | 7.76 kg | 7.76 kg | ||||||
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Waste flow | Wastes | 6.99 kg | 6.99 kg | ||||||
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Waste flow | Wastes | 2.69 kg | 2.69 kg | ||||||
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Waste flow | Wastes / Radioactive waste | 9.95 kg | 9.95 kg | ||||||
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Product flow | Materials production / Other mineralic materials | 0.47 kg | 0.47 kg | ||||||
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Elementary flow | Resources / Resources from water / Renewable material resources from water | 290.0 m3 | 290.0 m3 | ||||||
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Product flow | Energy carriers and technologies / Electricity | 197.71200000000002 MJ | 197.71200000000002 MJ | ||||||
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Elementary flow | Resources / Resources from ground / Non-renewable energy resources from ground | 72.52 MJ | 72.52 MJ | ||||||
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Product flow | Transport services / Other transport | 267.9 t*km | 267.9 t*km | ||||||
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输出
流类型 | 分类 | 流 | 位置 | 平均量 | 计算量 | 最小量 | 最大量 | ||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 446.51 kg | 446.51 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.08 kg | 0.08 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.15 kg | 0.15 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.094 kg | 0.094 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.00187 kg | 0.00187 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 0.00584 kg | 0.00584 kg | ||||||
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Elementary flow | Emissions / Emissions to air / Emissions to air, unspecified | 7.825E-5 kg | 7.825E-5 kg | ||||||
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Elementary flow | Emissions / Emissions to water / Emissions to fresh water | 0.023 m3 | 0.023 m3 | ||||||
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Product flow | Materials production / Other mineralic materials | 1000.0 kg | 1000.0 kg | ||||||
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