CN112097530A - 一种新型预热空气换热器 - Google Patents
一种新型预热空气换热器 Download PDFInfo
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- 238000000034 method Methods 0.000 claims abstract description 9
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- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000003670 easy-to-clean Effects 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 2
- 239000000779 smoke Substances 0.000 claims 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 8
- 239000003546 flue gas Substances 0.000 abstract description 8
- 239000002918 waste heat Substances 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 abstract 2
- 239000000446 fuel Substances 0.000 abstract 1
- 238000004891 communication Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
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- 238000004140 cleaning Methods 0.000 description 2
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- 238000005265 energy consumption Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0475—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits having a single U-bend
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G7/00—Cleaning by vibration or pressure waves
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
本发明为一种新型预热空气换热器。本发明安装在冶金炉窑烟道中，以空气作为换热载体，回收烟气中的大量余热，经预热后的空气可返回生产中起助燃作用，达到节约燃料、降低生产成本，提高燃烧温度、增加炉子的产量等；在结构上，科学合理的加长空气换热流动行程，U型列管易于清灰，变形量少等，换热效果较好；工程制作及运行成本较低，经济、节能效益明显。包括：高温段U型列管(1)，低温段U型列管(2)，基板(3)，空气导流箱(4)，冷空气进口箱(5)，热空气出口箱(6)，热空气联通箱(7)，侧筋板(8)，轴筋板(9)，吊耳(10)，高温段、低温段振灰架(11)。
Description
技术领域
本发明属于冶金设备技术领域，具体涉及一种新型预热空气换热器。
背景技术
换热器是用来使热量从热流体传递到冷流体，以满足规定的工艺要求的装置，是对流传热及热传导的一种工业应用；列管式换热器的结构比较简单、紧凑、造价便宜，因此冶金加热炉窑为了降低能耗，在烟道中通常设置列管式换热器，以回收烟气中的大量余热。此种换热器：直管管束连接在管板上，管板分别焊在外壳两端，并在其上连接有顶盖，顶盖和壳体装有流体进出口接管；通常在管外装置一系列垂直于管束的挡板；管子和管板与外壳的连接都是刚性的，而管内流过的是待预热空气，管外是烟道热烟气，两种不同温度的流体，当管壁与壳壁温差较大时，由于两者的热膨胀不同，产生了很大的温差应力，以至管子扭弯或使管子从管板上松脱，甚至毁坏换热器，同时由于直管传热路径较短，换热效果不明显，壳体内烟气灰尘积累，会阻塞及影响传热，清灰难度较大。
发明内容
本发明旨在提供一种体积小，换热路径长、效率高，易于清灰的新型预热空气换热器。
新型预热空气换热器为钢制组合件，总体呈长方体，尺寸约为2400mm×2600mm×2200mm，主要参数为：换热面积49m2，烟气入换热器温度900℃，烟气出换热器温度675℃，空气流量3200Nm3/h，空气入换热器温度25℃，空气出换热器温度400℃，耐压力5000Pa；预热空气换热器最顶端为并列排列的冷空气进口箱，热空气出口箱，热空气联通箱，依次往下有：空气导流箱，基板，U型列管组，高温段、低温段振灰架；空气导流箱内焊接有隔板，便于空气预热各阶段的空气流向疏导，最下端为U型列管组，列管端部开口焊接在基板上，基板把空气导流箱和U型列管组连接起来，高温段、低温段振灰架与震动电机连接，通过震动可清除烟尘在U型列管上的积灰，烟道侧面有清灰门，便于移除落灰；工作原理为：U型列管组部分敞开放置在高温烟道中，冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱，空气流向与烟气流向相逆；预热空气换热器在结构上，科学合理的加长空气换热流动行程，U型列管易于清灰，变形量少等，换热效果较好；工程制作及运行成本较低，经济、节能效益明显。
附图说明
图1预热空气换热器简图。
图2预热空气换热器俯视图。
图3预热空气换热器A视图。
图4预热空气换热器B视图。
图5预热空气换热器空气导流箱图。
图6预热空气换热器C视图。
图7预热空气换热器D视图。
具体实施方式
根据附图1～7所示的一种新型预热空气换热器，包括：高温段U型列管(1)，低温段U型列管(2)，基板(3)，空气导流箱(4)，冷空气进口箱(5)，热空气出口箱(6)，热空气联通箱(7)，侧筋板(8)，轴筋板(9)，吊耳(10)，高温段、低温段振灰架(11)。
高温段U型列管(1)，低温段U型列管(2)材料为：310S(0Cr25Ni20)不锈钢管，尺寸为直径φ60mm，壁厚δ3.5mm。
所述基板(3)材料为：310S(0Cr25Ni20)不锈钢板，厚δ12mm。
所述空气导流箱(4)为长方体形，由20G，δ10mm锅炉钢板采用连续焊接工艺制作，由边板(12)，隔条(13)，长盖板(14)，短盖板(15)组成，起到空气流向的疏导功能。
所述冷空气进口箱(5)，热空气出口箱(6)，热空气联通箱(7)，由20G，δ10mm锅炉钢板采用连续焊接工艺制作，并列排列在预热空气换热器最顶端。依次往下有：空气导流箱，基板，U型列管组，高温段、低温段振灰架；空气导流箱内焊接有隔板，便于空气预热各阶段的空气流向疏导，最下端为U型列管组，列管端部开口焊接在基板上，基板把空气导流箱和U型列管组连接起来，高温段、低温段振灰架与震动电机连接，可清除烟尘在U型列管上的积灰；工作原理为：U型列管组部分敞开放置在高温烟道中，冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱，空气流向与烟气流向相逆；预热空气换热器在结构上，科学合理的加长空气换热流动行程，U型列管易于清灰，变形量少等，换热效果较好；工程制作及运行成本较低，经济、节能效益明显。
所述侧筋板(8)，轴筋板(9)，吊耳(10)，由Q235B，δ10mm钢板采用连续焊接工艺制作，起到加固和吊装作用。
所述高温段、低温段振灰架(11)，由310S，5#不锈钢角钢采用连续焊接工艺与振动电机连接。
Claims (3)
1.一种新型预热空气换热器，包括高温段U型列管(1)，低温段U型列管(2)，基板(3)，空气导流箱(4)，冷空气进口箱(5)，热空气出口箱(6)，热空气联通箱(7)，侧筋板(8)，轴筋板(9)，吊耳(10)，高温段、低温段振灰架(11)。
2.根据权利要求1所述的一种新型预热空气换热器，其特征在于：所述空气导流箱(4)为长方体形，由20G，δ10mm锅炉钢板采用连续焊接工艺制作，由边板(12)，隔条(13)，长盖板(14)，短盖板(15)组成，起到空气流向的疏导功能。
3.根据权利要求1所述的一种新型预热空气换热器，其特征在于：所述冷空气进口箱(5)，热空气出口箱(6)，热空气联通箱(7)，由20G，δ10mm锅炉钢板采用连续焊接工艺制作，并列排列在预热空气换热器最顶端；依次往下有：空气导流箱，基板，U型列管组，高温段、低温段振灰架；空气导流箱内焊接有隔板，便于空气预热各阶段的空气流向疏导，最下端为U型列管组，列管端部开口焊接在基板上，基板把空气导流箱和U型列管组连接起来，高温段、低温段振灰架与震动电机连接，可清除烟尘在U型列管上的积灰；工作原理为：U型列管组部分敞开放置在高温烟道中，冷空气经冷空气进口箱——低温段U型列管——空气导流箱——热空气联通箱——高温段U型列管——热空气出口箱，空气流向与烟气流向相逆；预热空气换热器在结构上，科学合理的加长空气换热流动行程，U型列管易于清灰，变形量少等，换热效果较好；工程制作及运行成本较低，经济、节能效益明显。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114353558A (zh) * | 2021-12-31 | 2022-04-15 | 南通科赛尔机械有限公司 | 一种新型换热器 |
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| CN114353558A (zh) * | 2021-12-31 | 2022-04-15 | 南通科赛尔机械有限公司 | 一种新型换热器 |
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Application publication date: 20201218 |