CN202361822U - 转底炉烟气处理及余热发电系统 - Google Patents
转底炉烟气处理及余热发电系统 Download PDFInfo
- Publication number
- CN202361822U CN202361822U CN2011205371527U CN201120537152U CN202361822U CN 202361822 U CN202361822 U CN 202361822U CN 2011205371527 U CN2011205371527 U CN 2011205371527U CN 201120537152 U CN201120537152 U CN 201120537152U CN 202361822 U CN202361822 U CN 202361822U
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- CN
- China
- Prior art keywords
- flue gas
- temperature flue
- hearth furnace
- rotary hearth
- residual heat
- Prior art date
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound 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[O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 239000003546 flue gases Substances 0.000 title claims abstract description 77
- 239000002918 waste heat Substances 0.000 title abstract description 11
- 230000020169 heat generation Effects 0.000 title abstract 4
- 239000007789 gases Substances 0.000 claims description 33
- 239000011901 water Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 abstract description 13
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound 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[Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 abstract description 8
- 229910052725 zinc Inorganic materials 0.000 abstract description 8
- 239000011701 zinc Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002956 ash Substances 0.000 abstract 1
- 230000002349 favourable Effects 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 235000019628 coolness Nutrition 0.000 description 2
- 239000002910 solid wastes Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolants Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002708 enhancing Effects 0.000 description 1
- 239000011499 joint compounds Substances 0.000 description 1
- 239000002184 metals Substances 0.000 description 1
- 229910052751 metals Inorganic materials 0.000 description 1
- 239000006072 pastes Substances 0.000 description 1
- 239000008188 pellets Substances 0.000 description 1
- 239000002994 raw materials Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- 238000009628 steelmaking Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
本实用新型涉及一种转底炉烟气处理及余热发电系统，属机械设备类。它由转底炉、高温烟气处理及余热利用装置、低温烟气处理及余热利用装置、旋流混风器、布袋除尘器、引风机、烟囱、汽轮发电机组构成，转底炉产生的高温烟气经过高温烟气处理及余热利用装置、低温烟气处理及余热利用装置、旋流混风器、布袋除尘器、引风机后进入烟囱；高温烟气处理及余热利用装置蒸汽输出口连接到汽轮机，汽轮机连接发电机。这种烟气处理及余热发电系统既能保证转底炉的正常生产，又可以减少烟气中粉尘的排放，回收烟气中高浓度的锌灰，同时利用烟气的高温余热发电，具有良好的经济效益和社会效益。
Description
转底炉烟气处理及余热发电系统
技术领域
[0001] 本实用新型涉及一种转底炉烟气处理及余热发电系统，属机械设备类。
背景技术
[0002] 转底炉（Rotary Hearth Furnace,简称RHF)工艺是以一种煤基快速直接还原技术。该工艺思想最早由Ross公司（Midrex公司前身)提出，并于1964年开始进行规模试验，从1978年在美国Ellwood市建成第一座具有商业意义的转底炉INMETC0工艺起到现在转底炉的发展已经有30多年的历史。在转底炉发展过程中美国、德国、日本等国家都相继投入力量开发研究，先后建立起工业化生产厂。目前该技术已经逐渐趋于成熟并表现出一定的商业发展潜力。我国自90年代起对转底炉技术进行跟踪研究，先后在山西舞阳、翼城， 河南巩义，辽宁鞍山等地建立试验装置，并进行了初步的实验，获得了经验与技术的积累。 近几年在消化吸收国外转底炉技术发展的基础上，先后有多家企业投资建设转底炉装置， 另有多家钢铁企业规划设计上马转底炉，转底炉工艺逐渐成为直接还原铁领域的一个建设执占。
[0003]为了综合利用钢厂含铁、锌等固体废弃物，回收利用其中铁、碳、锌等元素，目前国内部分钢厂采用转底炉直接还原工艺，处理钢厂部分含锌高炉粉尘和转炉污泥，轧钢氧化铁皮等固体废弃物。转底炉产品为金属化球团，作为转炉炼钢的冷却剂。
[0004] 转底炉在生产过程中排放大量的高温烟气，烟温约1000〜1200°C，烟气含尘量约 10〜16g/Nm3，其中锌含量约20%〜50%。
发明内容
[0005] 本实用新型的目的在于提供一种对烟气处理、余热发电可同步进行的转底炉烟气处理及余热发电系统，既能保证转底炉的正常生产，又可以减少烟气中粉尘的排放、回收烟气中高浓度的锌灰，同时利用烟气的高温余热发电。
[0006] 为达到上述目的，本实用新型的技术方案为：
[0007] 转底炉烟气处理及余热发电系统，它包括转底炉、高温烟气处理及余热利用装置、 低温烟气处理及余热利用装置、旋流混风器、布袋除尘器、引风机、烟®、汽轮机、发电机，转底炉的高温烟气出口通过烟道连接高温烟气处理及余热利用装置的烟气进口，高温烟气处理及余热利用装置的烟气出口通过烟道连接低温烟气处理及余热利用装置的烟气进口，低温烟气处理及余热利用装置的烟气出口通过烟道连接旋流混风器的烟气进口，旋流混风器的烟气出口通过烟道连接布袋除尘器的烟气进口，布袋除尘器的烟气出口通过烟道连接引风机的烟气进口，引风机的烟气出口通过烟道连接烟囱的烟气进口；高温烟气处理及余热利用装置的蒸汽输出口连接到汽轮机的蒸汽进口，汽轮机连接发电机，汽轮机的蒸汽排出口通过管道经冷凝器、凝结水泵后连接至低温烟气处理及余热利用装置的给水进口。
[0008] 由于采用了以上技术方案，本实用新型的转底炉烟气处理及余热发电系统具有如下优点：[0009] I)通过高温烟气处理及余热利用装置、低温烟气处理及余热利用装置吸收转底炉高温烟气余热，产生蒸汽用来发电，减少钢厂自外网的购电量。
[0010] 2)由于烟气中的粉尘低温下粘结性很强，吹灰装置很难去除，低温烟气处理及余热利用装置设置两套或以上，互相切换使用，一台运行，其余检修，保证转底炉工艺系统和余热发电系统正常、连续的运行，提高生产效率及发电量。[0011] 3)设置的旋流混风器，通过烟气急冷改变进入布袋除尘器前烟气中粉尘的物态， 保证布袋除尘器不糊袋，不腐蚀。
[0012] 4)设置布袋除尘器回收转底炉烟气中的粉尘，既可以减少粉尘排放对大气的污染，收集的高浓度锌灰又可以作为提炼锌金属的原料，有很好的经济效益。
[0013] 5)余热发电产生的电力钢厂内部消耗，减少钢厂自外网的购电量，可以减少当地由常规火电厂带来的SO2、粉尘之类的大气污染物；减少对于化石资源的开采和消耗，促进资源节约；有助于改善当地的能源结构，提高能源安全。
附图说明
[0014] 附图为本实用新型的一种转底炉烟气处理及余热发电系统示意图。
具体实施方案
[0015] 下面结合附图对本实用新型进行详细描述。
[0016] 见附图
[0017] 转底炉烟气处理及余热发电系统，它包括转底炉I、高温烟气处理及余热利用装置
2、低温烟气处理及余热利用装置3、旋流混风器4、布袋除尘器5、引风机6、烟囱7、汽轮机 8、发电机9，转底炉I的高温烟气出口通过烟道连接高温烟气处理及余热利用装置2的烟气进口，高温烟气处理及余热利用装置2的烟气出口通过烟道连接低温烟气处理及余热利用装置3的烟气进口，低温烟气处理及余热利用装置3的烟气出口通过烟道连接旋流混风器 4的烟气进口，旋流混风器4的烟气出口通过烟道连接布袋除尘器5的烟气进口，布袋除尘器5的烟气出口通过烟道连接引风机的烟气进口 6，引风机6的烟气出口通过烟道连接烟囱 7的烟气进口 ；高温烟气处理及余热利用装置2的蒸汽输出口连接到汽轮机8的蒸汽进口， 汽轮机8连接发电机9，汽轮机8的蒸汽排出口通过管道经冷凝器、凝结水泵后连接至低温烟气处理及余热利用装置3的给水进口。
[0018] 转底炉烟气处理及余热发电系统运行时，转底炉I产生的高温烟气通过烟道进入高温烟气处理及余热利用装置2，降温后的烟气约400〜450°C，通过烟道进入低温烟气处理及余热利用装置3，低温烟气处理及余热利用装置3设置两套或两套以上，互相切换使用，一台运行，其余检修。经过低温烟气处理及余热利用装置3降温后的烟气约150〜 200°C，通过烟道进入旋流混风器4，在旋流混风器中通过掺入的冷风将其烟气中的粘性粉尘急冷后通过烟道进入布袋除尘器5，除去大量的粉尘后的烟气通过烟道进入引风机6，经过引风机6升压后通过烟道进入烟® 7，最后排入大气；高温烟气处理及余热利用装置蒸汽输出口连接到汽轮机8，蒸汽进入汽轮机做功，汽轮机8带动发电机9将机械能转化为电能。
Claims (3)
1.转底炉烟气处理及余热发电系统，它包括转底炉（I)、高温烟气处理及余热利用装置（2)、低温烟气处理及余热利用装置（3)、旋流混风器（4)、布袋除尘器（5)、引风机（6)、烟囱（7)、汽轮机（8)、发电机（9)，其特征在于：转底炉（I)的高温烟气出口通过烟道连接高温烟气处理及余热利用装置（2)的烟气进口，高温烟气处理及余热利用装置（2)的烟气出口通过烟道连接低温烟气处理及余热利用装置（3)的烟气进口，低温烟气处理及余热利用装置（3)的烟气出口通过烟道连接旋流混风器（4)的烟气进口，旋流混风器（4)的烟气出口通过烟道连接布袋除尘器（5)的烟气进口，布袋除尘器（5)的烟气出口通过烟道连接引风机的烟气进口（6)，引风机（6)的烟气出口通过烟道连接烟囱（7)的烟气进口 ；高温烟气处理及余热利用装置（2)的蒸汽输出口连接到汽轮机（8)的蒸汽进口，汽轮机（8)连接发电机（9)，汽轮机（8)的蒸汽排出口通过管道经冷凝器、凝结水泵后连接至低温烟气处理及余热利用装置（3)的给水进口。
2.如权利要求I所述的转底炉烟气处理及余热发电系统，其特征在于：所述的低温烟气处理及余热利用装置（3)为一套或一套以上。
3.如权利要求2所述的转底炉烟气处理及余热发电系统，其特征在于：所述的低温烟气处理及余热利用装置（3)为一套以上时，低温烟气处理及余热利用装置（3)之间并联连接。
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901367A (zh) * | 2012-11-16 | 2013-01-30 | 重庆赛迪工业炉有限公司 | 一种转底炉预热器系统 |
| CN102937380A (zh) * | 2012-11-26 | 2013-02-20 | 重庆赛迪工业炉有限公司 | 一种转底炉烟气处理方法及系统 |
| CN103968675A (zh) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | 一种转底炉低温烟气预除尘装置与预除尘方法 |
| CN104046715A (zh) * | 2013-10-12 | 2014-09-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 转底炉废烟气系统及转底炉设备 |
| CN106195968A (zh) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | 烟气处理装置及转底炉高温高尘烟气处理系统 |
| CN106197042A (zh) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | 转底炉高温高尘烟气处理方法 |
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2011
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901367A (zh) * | 2012-11-16 | 2013-01-30 | 重庆赛迪工业炉有限公司 | 一种转底炉预热器系统 |
| CN102937380A (zh) * | 2012-11-26 | 2013-02-20 | 重庆赛迪工业炉有限公司 | 一种转底炉烟气处理方法及系统 |
| CN104046715A (zh) * | 2013-10-12 | 2014-09-17 | 攀钢集团攀枝花钢铁研究院有限公司 | 转底炉废烟气系统及转底炉设备 |
| CN104046715B (zh) * | 2013-10-12 | 2016-11-16 | 攀钢集团攀枝花钢铁研究院有限公司 | 转底炉废烟气系统及转底炉设备 |
| CN103968675A (zh) * | 2014-05-20 | 2014-08-06 | 莱芜钢铁集团有限公司 | 一种转底炉低温烟气预除尘装置与预除尘方法 |
| CN106195968A (zh) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | 烟气处理装置及转底炉高温高尘烟气处理系统 |
| CN106197042A (zh) * | 2016-07-12 | 2016-12-07 | 武汉都市环保工程技术股份有限公司 | 转底炉高温高尘烟气处理方法 |
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