bdf19030-02e2-453c-bbd6-1918edbb0225 cement production;cement, alternative constituents 6-20%, 32.5MPa;new suspension preheater;mixed solid wastes 水泥生产;水泥, 替代成分 6-20%, 32.5MPa;新型悬浮预热器;混合固废 Unit processes Materials production Other mineralic materials Common cement where the 3rd day compressive strength is greater than 10 MPa and the 28th day compressive strength is 32.5 MPa. Industrial solid waste that contains silica and flue gas desulfurized (FGD) gypsum is used in cement manufacture instead of clay and gypsum. 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. 普通水泥的第三天抗压强度大于10 MPa，第28天抗压强度为32.5 MPa。使用含有二氧化硅和烟气脱硫石膏的工业固体废物代替黏土和石膏进行水泥生产。新型悬浮预热器（New suspension preheater，NSP）是中国水泥工业中主要的水泥生产工艺。该工艺包括三个主要的生产过程：煤粉和生料制备过程，包括原材料的输送、研磨、均化和存储以及煤的研磨和存储；在燃烧过程中，混合磨碎的生料被输入到预热器中，然后经过煅烧器分解，60％的煤在950℃下燃烧。在煅烧器中，石灰石分解率约为95％，在窑中分解率为5％。分解后的物料落入窑中，在超过1400℃的温度下与40％的煤燃烧成熟料。在成品处理过程中，当熟料、矿物添加剂和石膏在磨煤机中细细粉碎时，水泥就被生产出来了。生料在预热器中通过再生的热空气悬浮并加热。 23 The China United Cement Corporation 中国联合水泥公司 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). 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). This cement production process with the integration of alternative constituents ranging from 6-20% is specifically designed for producing Ordinary Portland Cement (OPC) with a 28-day compressive strength of 32.5 MPa. This OPC is suitable for general construction activities, including the construction of buildings, roads, bridges, and other structures where moderate strength concrete is adequate. The new suspension preheater (NSP) technology and the use of industrial solid wastes as substitutes for traditional raw materials reflect the process's application in environmentally conscious manufacturing practices within the cement industry. 该水泥生产工艺整合了6-20%的替代成分，专门设计用于生产28天抗压强度为32.5 MPa的普通硅酸盐水泥（OPC）。此OPC适用于包括建筑物、道路、桥梁和其他结构在内的一般建筑活动，其中适度强度的混凝土就足以满足要求。采用新型悬浮预热器（NSP）技术及工业固废作为传统原料的替代物，反映了水泥行业在环保制造实践中的应用。 JT2bbFuRfo9Kv7xwCNOcHSmlnqg.png One ton of cement with 32.5 MPa strength grade is used as functional unit (FU).System boundaries involve raw material and energy production, road transport, raw material crushing, clinker production, cement milling and packaging, waste heat energy recovery, direct emissions, on-site flue gas treatment and solid waste reuse in cement plants. 使用32.5 MPa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。 LCI result None 无 None 无 None 无 Annual average data on the operational processes of cement production (e.g. raw material and energy consumption, transportation distance, energy recovery, direct emissions, waste disposal, capital costs) were obtained from a survey of China United Cement Company. 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。 None 无 None 无 Dong Yang, Lin Fan, Feng Shi, Qian Liu, & Yajing Wang. (2017). Comparative study of cement manufacturing with different strength grades using the coupled LCA and partial LCC methods-A case study in China. RESOURCES CONSERVATION AND RECYCLING, 119, 60–68. Dong Yang, Lin Fan, Feng Shi, Qian Liu, & Yajing Wang. (2017). Comparative study of cement manufacturing with different strength grades using the coupled LCA and partial LCC methods-A case study in China. RESOURCES CONSERVATION AND RECYCLING, 119, 60–68. China United Cement Co., Ltd. accounts for 9.45% of China's cement market.According to data from the "2014 China Cement Yearbook", the number of 5000t/d and 2500t/d cement production lines using new suspension preheater technology accounted for 56.1% and 28.3% of all cement production lines in China respectively. Production lines with a scale of 5000t/d and 2500t/d may have relative accuracy, reflecting the main characteristics of China's cement production.Parameter: value;Cement production line scale: 5000t/d×1, 2500t/d×2;Cement production technology: new suspended preheater;Power generation recovery efficiency: 30%;Dust removal technology: dry bag dust removal;Dust removal efficiency: 99.95%;Denitrification technology: selective non-catalytic reduction method;Denitrification efficiency: 50.00%. 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%。 When using the LCA data set for this cement production process, the following methodological considerations should be noted: The data represents the average annual operational processes for China United Cement Company and may not be representative for all cement production facilities or geographic locations. Ensure that the system boundaries, which include raw material and energy production, transportation, and waste management processes, align with the scope of the LCA study being conducted. Additionally, the process assumes the use of NSP technology and the substitution of industrial solid waste for clay and gypsum, which should be taken into account for accurate environmental impact assessments. 在使用本水泥生产工艺的生命周期评估（LCA）数据时，应注意以下方法学考量：该数据代表中国联合水泥公司平均年度运营过程，可能不适用于所有水泥生产设施或地理位置。确保系统边界（包括原材料和能源生产、运输和废弃物管理过程）与所进行的LCA研究的范围一致。此外，该过程假定使用NSP技术和工业固体废弃物替代粘土和石膏，这应在准确的环境影响评估中考虑。 The manufacturing of raw materials except limestone is ignored because almost all of these materials are industrial solid waste. 除了石灰石外，原材料的制造被忽略，因为几乎所有这些材料都是工业固体废物。 Inventory: The internal review was done by several iteration steps concerning raw data validation, raw data documentation, representativity, completeness and consistency of modelling with regard to ISO 14040 and 14044. 清单： 内部审查通过几个迭代步骤完成，涉及原始数据验证、原始数据记录、代表性、完整性、与 ISO 14040 和 14044 有关的建模的一致性。 Tiangong LCI Data Working Group 天工LCI数据工作小组 #REF!, ysqsophia@gmail.com ysqsophia@gmail.com ysqsophia@gmail.com 2024-03-19T21:18:09+08:00 2024-04-20T14:41:52.430326+08:00 00.01.005 https://lcadata.tiangong.world/showProcess.xhtml?uuid=bdf19030-02e2-453c-bbd6-1918edbb0225&version=01.00.000&stock=TianGong Tiangong LCI Data Working Group 天工LCI数据工作小组 false Free of charge for all users and uses limestone, crushed, for mill Input 811.32 811.32 Limestone 石灰石 ash Input 272.51 272.51 Fly ash 粉煤灰 gypsum stone (CaSO4-dihydrate) Input 44.35 44.35 Gypsum 石膏 Iron tailings Input 36.06 36.06 lron powder mineral mud 铁粉矿泥 clay Input 26.63 26.63 Quartz sand mineral mud 石英砂矿物泥 blast furnace slag Input 58.01 58.01 Slag 矿渣 shale Input 7.78 7.78 Shale 页岩 Construction waste Input 3.26 3.26 Construction waste 建筑垃圾 Mineral waste Input 2.7 2.7 Coal gangue 煤矸石 Carbide slag Input 4.24 4.24 Acetylene sludge 乙炔渣 ammonia, anhydrous, liquid Input 0.57 0.57 Ammonia 氨 water Input 290.0 290.0 Water 水 Electricity Input 200.91600000000003 200.91600000000003 Electricity. The LCI data for electricity and coal were collected from the literature. 电。从文献中收集了电力和煤的LCI数据。 hard coal;  26.3 MJ/kg Input 72.74 72.74 Coal. The LCI data for electricity and coal were collected from the literature. 煤炭。从文献中收集了电力和煤的LCI数据。 transport in t*km Input 268.03 268.03 Road transport. According to the survey, the transport distance of raw materials in the cement production is about 200 km. The environmental impacts of road transportation were taken from the literature. 公路运输。根据调查，原材料在水泥生产中的运输距离约为200公里。道路运输的环境影响取自文献。 carbon dioxide (fossil) Output 440.61 440.61 CO2 二氧化碳 sulfur dioxide Output 0.075 0.075 SO2 SO2 Nitrogen oxides Output 0.15 0.15 NOX NOx particles (> PM10) Output 0.094 0.094 Particulates. The particle size is not specified. Here we treat it as PM>10. 颗粒，未标明粒径，按PM>10处理。 fluoride Output 0.00186 0.00186 Fluoride 氟化物 ammonia Output 0.00586 0.00586 Ammonia 氨 mercury Output 7.801e-05 7.801e-05 Hg Hg Water Output 0.023 0.023 Waste water 废水 cement, alternative constituents 6-20%, 32.5MPa Output 1000.0 1000.0 32.5 MPa cement 32.5MPa水泥