水泥窑余热发电概述水泥窑余热发电概述<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">水泥窑余热发电技术是直接对水泥窑在熟料煅烧过程中窑头窑尾排放的余热废气进行回收，通过余热锅炉产生蒸汽带动汽轮发电机发电。
<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">一条日产5000<spanstyle="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family: Helvetica;mso-bidi-font-family:Helvetica;mso-font-kerning:0pt">吨水泥熟料生产线每天可利用余热发电21-24<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-famil y:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">万度，可解决约60%<spanstyle="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family: Helvetica;mso-bidi-font-family:Helvetica;mso-font-kerning: 0pt">的熟料生产自用电，产品综合能耗可下降约18%<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-famil y:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">，每年节约标准煤约2.5<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family: Helvetica;mso-bidi-font-family:Helvetica;mso-font-kerning:0pt">万吨，减排二氧化碳约6<span style="font-size: 13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-famil y:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">万吨。
<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">水泥纯低温余热发电技术是指在新型干法水泥熟料生产线生产过程中，通过余热回收装置——余热锅炉将水泥窑窑头、窑尾排出大量的低品位废气余热进行热交换回收，产生过热蒸汽推动汽轮机实现热能向机械能的转换，从而带动发电机发出电能，窑头锅炉所发电能供水泥生产过程中使用。
<spanstyle="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height: 150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:H elvetica;mso-bidi-font-family:Helvetica;mso-font-kerning:0pt">水泥窑纯低温余热发电背景<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">随着水泥熟料煅烧技术的发展，发达国家水泥工业节能技术水平发展很快，低温余热在水泥生产过程中被回收利用，水泥熟料热能利用率已有较大的提高。
但我国由于节能技术、装备水平的限制和节能意识影响，在窑炉工业企业中仍有大量的中、低温废气余热资源未被充分利用，能源浪费现象仍然十分突出。
新型干法水泥熟料生产企业中由窑头熟料冷却机和窑尾预热器排出的350<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-famil y:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">℃左右废气，其热能大约为水泥熟料烧成系统热耗量的35<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">％，低温余热发电技术的应用，可将排放到大气中占熟料烧成系统热耗35<spanstyle="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">％的废气余热进行回收，使水泥企业能源利用率提高到95<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">％以上。
项目的经济效益十分可观。
<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:Helvetica;mso-bidi-font-fa mily:Helvetica;mso-font-kerning:0pt">我国是世界水泥生产和消费的大国，近年来新型干法水泥生产发展迅速，技术、设备、管理等方面日渐成熟。
目前国内已建成运行了大量2000t/d<span style="font-size:13.0pt;mso-bidi-font-size:9.0pt;line-height: 150%;font-family:宋体;mso-ascii-font-family:Helvetica;mso-hansi-font-family:H elvetica;mso-bidi-font-family:Helvetica;mso-font-kerning:0pt">以上熟料生产线，新型干法生产线与其他窑型相比在热耗方面有显著的降低，但新型干法水泥生产对电能的消耗和依赖依然强劲，因此，新型干法水泥总量的增长对水泥工业用电总量的增长起到了推动作用，一定程度上加剧了电能的供应紧张局面。