WO2014101711A1 - Heat exchanger structure for extending service life of calcined coke heat exchanger - Google Patents

Heat exchanger structure for extending service life of calcined coke heat exchanger Download PDF

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WO2014101711A1
WO2014101711A1 PCT/CN2013/089966 CN2013089966W WO2014101711A1 WO 2014101711 A1 WO2014101711 A1 WO 2014101711A1 CN 2013089966 W CN2013089966 W CN 2013089966W WO 2014101711 A1 WO2014101711 A1 WO 2014101711A1
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Prior art keywords
heat exchanger
upper flange
header
annular
life
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PCT/CN2013/089966
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French (fr)
Chinese (zh)
Inventor
王佐峰
王佐任
刘永启
郑斌
卞玉峰
高亮宝
张英杰
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潍坊联兴新材料科技股份有限公司
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Publication of WO2014101711A1 publication Critical patent/WO2014101711A1/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004Systems for reclaiming waste heat
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/05Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0041Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0045Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for granular materials

Abstract

A heat exchanger structure for extending the service life of a calcined coke heat exchanger, comprising an outer heat exchanger for enclosing a high temperature material channel, and an inner heat exchanger located in the center of the material channel; the outer heat exchanger comprises an upper annular header (8) and a lower annular header (2); a lower flange plate (1) is installed at the lower end of the lower annular header (2), and an upper flange is installed at the upper end of the upper annular header (8); the upper flange is formed by combining a plurality of upper flange plates (7); each upper flange plate (7) is respectively and fixedly connected to the upper annular header (8); every two adjacent upper flange plates (7) are connected together via a lower connecting plate (9); a gap exists between every two adjacent upper flange plates (7); and the gap is filled with a heat-resistant material (11). The structure effectively compensates the deformation caused due to the fact that the thermal expansion of an upper flange is greater than the thermal expansion of an upper annular header, and reduces the stresses of a welding seam between the upper flange and the upper annular header and of a circular welding seam of the upper annular header, thus improving the operation reliability of the calcined coke heat exchanger and extending the service life thereof.

Description

一种提高煅后焦换热器寿命的换热器结构  Heat exchanger structure for improving the life of calcined coke heat exchanger
技术领域Technical field
一种提高煅后焦换热器寿命的换热器结构,涉及石油焦罐式煅烧炉,尤其涉及一种罐式煅烧炉高温煅后焦换热器。 The utility model relates to a heat exchanger structure for improving the life of a calcined post-heat exchanger, relating to a petroleum coke-type calciner, in particular to a high-temperature calcination post-heat exchanger for a tank calciner.
背景技术Background technique
罐式煅烧炉内石油焦的煅烧温度在1300℃左右,煅烧后的石油焦在通过炉底板排出之后,必须对其进行密闭冷却,将温度降至250℃以下,避免煅后焦遇到空气发生氧化燃烧反应而导致部分煅后焦烧蚀。目前,普遍采用水冷夹套对高温煅后焦进行冷却,然后通过排料阀出料。水冷夹套一般为双层钢板焊接结构,内层钢板围成一个高温物料的通道;内、外层钢板之间形成封闭的环形夹层空间为冷却水通道。当高温石油焦通过水冷夹套时,将热量通过内层钢板传导给夹层空间内的冷却水,冷却水再送到凉水塔或凉水池进行降温后再循环。由于石油焦的传热系数较小,这种水冷夹套的物料冷却不均匀,靠近内层钢板的高温物料冷却速度较快,温度较低;由外向内,物料温度越来越高。潍坊联兴炭素有限公司公开了一种“石油焦罐式煅烧炉冷却水套”(申请号为ZL200810139761.X),采用用于围成高温物料通道的一级换热装置(外换热器)和位于高温物料通道中心的二级换热装置(内换热器)同时对高温物料进行冷却,冷却效果得到较大的改善。但在一级换热装置和二级换热装置的换热管之间还有较大的空间,该空间中心处的物料难于冷却。山东理工大学在申报的申请号为201110187100.6的专利中,公开了一种“石油焦罐式煅烧炉排料冷却装置”,采用在内换热器和外换热器的换热管上设置轴向翅片,翅片深入到高温物料的内层,既增加了换热器的有效换热面积,又有效减小了内层物料的传热距离,较好地解决了内层物料难以冷却的问题。上述两种换热器在安装时,上部通过与外换热器焊为一体的上法兰板与罐式煅烧炉的炉底板相连接,下部通过与外换热器焊为一体的下法兰板与排料阀连接。进出换热器的物料温差高达800℃,在换热器内产生很大的热应力。特别是外换热器的上法兰,不但接触的物料温度高,还直接与煅烧炉底板接触,温度很高,受热膨胀变形大,容易引起上法兰与环形上集箱之间的焊缝和环形上集箱的对接环焊缝开裂。The calcination temperature of petroleum coke in the tank calciner is about 1300 °C. After the calcined petroleum coke is discharged through the furnace floor, it must be hermetically cooled to lower the temperature to below 250 °C to avoid the occurrence of air after calcination. The oxidative combustion reaction results in partial calcination of the coke ablation. At present, the water-cooled jacket is generally used to cool the high-temperature calcined coke, and then discharged through the discharge valve. The water-cooled jacket is generally a double-layer steel plate welded structure, and the inner steel plate encloses a passage of a high-temperature material; the closed annular interlayer space between the inner and outer steel plates is a cooling water passage. When the high-temperature petroleum coke passes through the water-cooled jacket, the heat is transferred to the cooling water in the interlayer space through the inner steel plate, and the cooling water is sent to the cooling tower or the cool water pool for cooling and recycling. Due to the small heat transfer coefficient of the petroleum coke, the material of the water-cooled jacket is unevenly cooled, and the high-temperature material close to the inner steel plate has a faster cooling rate and a lower temperature; from the outside to the inside, the material temperature is higher and higher. Weifang Lianxing Carbon Co., Ltd. has disclosed a “coal coke-type calciner cooling water jacket” (application number is ZL200810139761.X), which uses a primary heat exchanger (external heat exchanger) for enclosing a high-temperature material passage. The high-temperature material is cooled simultaneously with the secondary heat exchange device (internal heat exchanger) located at the center of the high-temperature material passage, and the cooling effect is greatly improved. However, there is a large space between the heat exchange tubes of the primary heat exchange device and the secondary heat exchange device, and the material at the center of the space is difficult to cool. Shandong University of Technology, in the patent application No. 201110187100.6, discloses a "coal coke-type calciner discharge cooling device", which adopts axial direction on the heat exchange tubes of the inner heat exchanger and the outer heat exchanger. The fins and fins penetrate into the inner layer of the high temperature material, which not only increases the effective heat exchange area of the heat exchanger, but also effectively reduces the heat transfer distance of the inner layer material, and better solves the problem that the inner layer material is difficult to be cooled. . When the above two heat exchangers are installed, the upper part is connected to the furnace bottom plate of the tank calciner through the upper flange plate welded with the outer heat exchanger, and the lower part is welded to the lower flange integrated with the outer heat exchanger. The plate is connected to the discharge valve. The temperature difference between the materials entering and leaving the heat exchanger is as high as 800 ° C, which generates a large thermal stress in the heat exchanger. In particular, the upper flange of the outer heat exchanger not only has a high temperature of the contact material, but also directly contacts the bottom plate of the calciner, the temperature is high, and the thermal expansion and deformation are large, which easily causes the weld between the upper flange and the annular upper header. And the butt joint weld of the ring upper header is cracked.
发明内容Summary of the invention
本发明要解决的技术问题是:克服现有技术的不足,提供一种提高煅后焦换热器工作可靠性,提高煅后焦换热器使用寿命的换热器结构。 The technical problem to be solved by the invention is to overcome the deficiencies of the prior art and provide a heat exchanger structure which improves the working reliability of the calcined post-heat exchanger and improves the service life of the calcined post-heat exchanger.
本发明解决其技术问题所采用的技术方案是:该种提高煅后焦换热器寿命的换热器结构,包括用于围成高温物料通道的外换热器和位于物料通道中心的内换热器,所述的外换热器包括一个环形上集箱和一个环形下集箱,环形上集箱设有出水口,环形下集箱设有进水口,多根外换热管分别与环形上集箱和环形下集箱固定连接并相通,相邻的两根外换热管之间都设有导热挡板,导热挡板分别与所述的两根外换热管、环形上集箱和环形下集箱固定连接,环形下集箱下端安装下法兰板,环形上集箱上端安装上法兰,所述的内换热器包括内上集箱、内下集箱和多根内换热管,内换热管分别与内上集箱和内下集箱固定连接并相通,内上集箱和内下集箱的一端分别伸出导热挡板,其特征在于:所述上法兰由多个上法兰板组合而成,每一个上法兰板分别和环形上集箱固定连接,且相邻两个上法兰板通过下面的连接板连接在一起,相邻两个上法兰板之间留有缝隙,在缝隙内填充耐热材料。上法兰由多个上法兰板组合而成,相邻两块上法兰板之间留有膨胀缝隙,可以有效补偿上法兰热膨胀大于环形上集箱热膨胀而引起的变形,降低上法兰与环形上集箱之间焊缝以及环形上集箱环焊缝的应力,提高了煅后焦换热器工作可靠性。The technical solution adopted by the present invention to solve the technical problem thereof is: the heat exchanger structure for improving the life of the calcined post-heat exchanger, including the outer heat exchanger for enclosing the high-temperature material passage and the inner exchange at the center of the material passage The heat exchanger comprises an annular upper header and an annular lower header, the annular upper header is provided with a water outlet, the annular lower header is provided with a water inlet, and the plurality of outer heat exchange tubes are respectively annular The upper header box and the annular lower header box are fixedly connected and communicated, and a heat conducting baffle is disposed between the adjacent two outer heat exchange tubes, and the heat conducting baffle is respectively connected with the two outer heat exchange tubes and the annular upper collecting box Fixedly connected with the annular lower header, the lower flange is mounted on the lower end of the annular lower header, and the upper flange is mounted on the upper end of the annular upper casing, wherein the inner heat exchanger comprises an inner upper header, an inner lower header and a plurality of inner tubes The heat exchange tube and the inner heat exchange tube are respectively fixedly connected to the inner upper header box and the inner lower header box, and one end of the inner upper header box and the inner lower header box respectively protrude from the heat conduction baffle, wherein: the upper method The orchid is composed of a plurality of upper flange plates, each of which is separately and the upper flange plate Is fixedly connected to the flange and the adjacent two plates connected together by the following web, leaving a gap between adjacent two of the flange plate, heat-resistant material is filled in the gap. The upper flange is composed of a plurality of upper flange plates, and an expansion slit is left between the two upper flange plates, which can effectively compensate the deformation caused by the thermal expansion of the upper flange and the thermal expansion of the upper casing, and reduce the upper method. The stress between the weld between the blue and the upper header and the weld on the ring on the ring increases the reliability of the work of the calendered heat exchanger.
所述的相邻两个上法兰板之间的缝隙位于环形上集箱的环焊缝的正上方。 The gap between the adjacent two upper flange plates is located directly above the girth weld of the annular upper header.
优选的,所述的上法兰由两个对称的上法兰板组成。Preferably, the upper flange is composed of two symmetrical upper flange plates.
所述的上法兰板的内边位于环形上集箱的管子轴线正上方。The inner edge of the upper flange plate is located directly above the axis of the tube of the annular upper header.
优选的,所述的法兰板之间缝隙内的耐热材料为耐热陶瓷纤维。 Preferably, the heat resistant material in the gap between the flange plates is a heat resistant ceramic fiber.
所述的连接板上开有对称的孔,上法兰板上开有对称的螺栓孔,多个螺栓穿过孔和螺栓孔将连接板和上法兰板连接在一起,并用螺母和垫圈紧固。 The connecting plate has a symmetrical hole, and the upper flange plate has a symmetrical bolt hole, and a plurality of bolts pass through the hole and the bolt hole to connect the connecting plate and the upper flange plate together, and are tightly fastened with a nut and a washer. solid.
所述的连接板的孔为长圆形。 The holes of the connecting plate are oblong.
与现有技术相比,该种提高煅后焦换热器寿命的换热器结构所具有的有益效果是:Compared with the prior art, the heat exchanger structure which improves the life of the calendered coke heat exchanger has the beneficial effects of:
1、换热器的上法兰为分体结构,由多个上法兰板组成,每一个上法兰板分别和环形上集箱焊接,相邻两个上法兰板之间留有膨胀缝隙,用于补偿上法兰板热膨胀大于环形上集箱热膨胀而引起的变形,有效降低上法兰板与环形上集箱之间焊缝所承受的应力;1. The upper flange of the heat exchanger is a split structure consisting of a plurality of upper flange plates, each of which is welded to the upper ring header, and the expansion between the adjacent two upper flange plates The gap is used for compensating for the deformation caused by the thermal expansion of the upper flange plate being greater than the thermal expansion of the annular upper header, and effectively reducing the stress on the weld between the upper flange plate and the annular upper header;
2、环形上集箱的环焊缝位于相邻两个上法兰板之间缝隙的下方,当上法兰板热膨胀大于环形上集箱热膨胀时,环形上集箱的环焊缝所承受的应力为压应力,不会将环焊缝撕裂;2. The girth weld of the annular upper header is located below the gap between two adjacent upper flange plates. When the thermal expansion of the upper flange plate is greater than the thermal expansion of the annular upper header, the girth weld of the annular upper header is subjected to The stress is compressive stress and will not tear the girth weld;
3、上法兰板的内边位于环形上集箱的管子轴线正上方,减小了上法兰板与高温煅后焦的接触面积,从而减小上法兰板的热膨胀变形。3. The inner edge of the upper flange plate is located directly above the axis of the tube of the annular upper header, which reduces the contact area between the upper flange plate and the high temperature calcined coke, thereby reducing the thermal expansion deformation of the upper flange plate.
附图说明DRAWINGS
图1是该种提高煅后焦换热器寿命的换热器结构实施例的主视图。 BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front elevational view of such an embodiment of a heat exchanger structure for increasing the life of a calendered coke heat exchanger.
图2是图1所示实施例的A-A剖面图。 Figure 2 is a cross-sectional view taken along the line A-A of the embodiment shown in Figure 1.
图3是图1所示实施例的B-B剖面图。Figure 3 is a cross-sectional view taken along line B-B of the embodiment shown in Figure 1.
图4是该种提高煅后焦换热器寿命的换热器结构实施例的连接板示意图。 Figure 4 is a schematic view of the connecting plate of the embodiment of the heat exchanger for improving the life of the calcined coke heat exchanger.
图中:1、下法兰板; 2、环形下集箱; 3、外换热管; 4、导热挡板; 5、内上集箱;6、出水口;7、上法兰板;8、环形上集箱; 9、连接板;10、环焊缝;11、耐热材料;12、螺栓; 13、螺母; 14、垫圈;15、内下集箱;16、进水口;17、内换热管;18、内边;19、孔。In the figure: 1, the lower flange plate; 2, the ring lower header; 3, the outer heat exchange tube; 4, the heat conduction baffle; 5, inner upper box; 6, water outlet; 7, upper flange plate; 8, ring upper header; 9, connecting plate; 10, ring weld; 11, heat-resistant material; 12, bolt; ; 14, gasket; 15, inner and inner header; 16, water inlet; 17, internal heat exchange tube; 18, inner side; 19, hole.
具体实施方式detailed description
图1~4是该种提高煅后焦换热器寿命的换热器结构的最佳实施例,下面结合附图1~4对该种提高煅后焦换热器寿命的换热器结构做进一步说明。 1 to 4 are preferred embodiments of the heat exchanger structure for improving the life of the calcined post-heat exchanger, and the heat exchanger structure for improving the life of the calcined coke heat exchanger is described below with reference to FIGS. Further explanation.
参照附图1 :一种提高煅后焦换热器使用寿命的换热器结构,包括用于围成高温物料通道的外换热器和位于物料通道中心的内换热器,外换热器包括一个环形上集箱8和一个环形下集箱2,环形上集箱8和一个环形下集箱2均为环形管,环形上集箱8设有出水口6,环形下集箱2设有进水口16。多根外换热管3分别与环形上集箱8和环形下集箱2固定连接并相通,构成外换热器的冷却水腔。相邻的两根外换热管3之间都设有导热挡板4,导热挡板4分别与两根外换热管3、环形上集箱8和环形下集箱2固定连接。环形下集箱2与下法兰板1固定连接。Refer to Figure 1 : A heat exchanger structure for improving the service life of a calcined coke heat exchanger, comprising an outer heat exchanger for enclosing a high temperature material passage and an inner heat exchanger at a center of the material passage, the outer heat exchanger comprising a ring shape The header box 8 and an annular lower header 2, the annular upper header 8 and the annular lower header 2 are both annular tubes, the annular upper header 8 is provided with a water outlet 6, and the annular lower header 2 is provided with a water inlet 16. The plurality of outer heat exchange tubes 3 are fixedly connected to and communicate with the annular upper header 8 and the annular lower header 2, respectively, and constitute a cooling water chamber of the outer heat exchanger. A heat conducting baffle 4 is disposed between the adjacent two outer heat exchange tubes 3, and the heat conducting baffles 4 are fixedly connected to the two outer heat exchange tubes 3, the annular upper header 8 and the annular lower header 2, respectively. The annular lower header 2 is fixedly connected to the lower flange plate 1.
参照附图1、2 :内换热器包括一个内上集箱5、一个内下集箱15和多根内换热管17,内上集箱5和内下集箱15为水平管,内换热管17为多条竖直管,内上集箱5的一端穿过导热挡板4伸出到外换热器的外部与回水管相连接;内下集箱15的进水口穿过导热挡板4伸出到外换热器的外部与供水管相连接,每一根内换热管17分别与内上集箱5和内下集箱15固定连接并相通。Refer to Figures 1, 2 The inner heat exchanger comprises an inner upper header 5, an inner lower header 15 and a plurality of inner heat exchange tubes 17, wherein the inner upper header 5 and the inner lower header 15 are horizontal tubes, and the inner heat exchange tubes 17 are mostly a vertical pipe, one end of the inner upper header 5 protrudes through the heat-conducting baffle 4 to the outside of the outer heat exchanger and is connected with the return pipe; the water inlet of the inner lower header 15 protrudes through the heat-conducting baffle 4 to The outside of the outer heat exchanger is connected to the water supply pipe, and each of the inner heat exchange tubes 17 is fixedly connected to the inner upper header 5 and the inner lower header 15 respectively.
参照附图1~3 :换热器的上法兰由两个上法兰板7组成,每个上法兰板7上均开两个有对称的螺栓孔,每一个上法兰板7分别和环形上集箱8固定连接。两个上法兰板7之间留有缝隙,在缝隙内填充耐热材料11,用于密封;环形上集箱8的两个环焊缝10分别位于两个上法兰板7之间缝隙的下方;上法兰板7的内边18位于环形上集箱8的管子轴线正上方。在两个上法兰板7的每个接缝下面分别设置一个连接板9,连接板9共两个,每个连接板9上均开有两个对称的孔19,螺栓12穿过上法兰板7的螺栓孔和连接板9上的孔19,并用螺母13和垫圈14将上法兰板7和连接板9连接,如图4所示,孔19为长圆形。 Refer to Figure 1~3 The upper flange of the heat exchanger is composed of two upper flange plates 7, and each of the upper flange plates 7 has two symmetrical bolt holes, and each upper flange plate 7 and the annular upper header 8 respectively Fixed connection. A gap is left between the two upper flange plates 7, and the heat-resistant material 11 is filled in the gap for sealing; the two ring-welded seams 10 of the annular upper header 8 are respectively located between the gaps between the two upper flange plates 7. The lower side 18 of the upper flange plate 7 is located directly above the tube axis of the annular upper header 8. A connecting plate 9 is arranged under each joint of the two upper flange plates 7, and two connecting plates 9 are provided. Each connecting plate 9 has two symmetrical holes 19, and the bolts 12 pass through the upper method. The bolt holes of the blue plate 7 and the holes 19 in the connecting plate 9 are connected to the upper flange plate 7 and the connecting plate 9 by nuts 13 and washers 14, as shown in Fig. 4, the holes 19 are oblong.
其中,换热器的上法兰还可以由两个以上的多个上法兰板7组成,每一个上法兰板7分别和环形上集箱8固定连接。 The upper flange of the heat exchanger may also be composed of two or more upper flange plates 7, and each upper flange plate 7 is fixedly connected to the annular upper header 8 respectively.
其中,耐热材料11的材料为耐热陶瓷纤维,还可以采用石棉等耐热材料。 Among them, the material of the heat resistant material 11 is a heat resistant ceramic fiber, and a heat resistant material such as asbestos may also be used.
工作原理如下:由于换热器在工作时,进出换热器的物料温差高达800℃,在换热器内产生很大的热应力。特别是外换热器的上法兰,不但接触的物料温度高,还直接与煅烧炉底板接触,温度很高,受热膨胀变形大,容易引起上法兰与环形上集箱8之间的焊缝和环形上集箱8的对接环焊缝开裂,上法兰设计为分体结构,由多个上法兰板7组成,相邻两个上法兰板7之间留有膨胀缝隙,膨胀缝隙可以补偿上法兰板7热膨胀大于环形上集箱8热膨胀而引起的变形,有效降低上法兰板7与环形上集箱8之间焊缝所承受的应力。The working principle is as follows: Since the heat exchanger is in operation, the temperature difference of the materials entering and leaving the heat exchanger is as high as 800 ° C, and a large thermal stress is generated in the heat exchanger. In particular, the upper flange of the outer heat exchanger not only has high temperature of the contact material, but also directly contacts the bottom plate of the calciner, the temperature is high, and the deformation is large due to thermal expansion, which easily causes welding between the upper flange and the annular upper header 8. The seam and the butt joint weld of the upper header 8 are cracked, and the upper flange is designed as a split structure, which is composed of a plurality of upper flange plates 7, and an expansion slit is left between the adjacent two upper flange plates 7 to expand The slit can compensate for the deformation caused by the thermal expansion of the upper flange plate 7 greater than the thermal expansion of the annular upper header 8, and effectively reduce the stress on the weld between the upper flange plate 7 and the annular upper header 8.
以上所述,仅是本发明的较佳实施例而已,并非是对本发明作其它形式的限制,任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本发明技术方案内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型,仍属于本发明技术方案的保护范围。The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art may use the above-disclosed technical contents to change or modify the equivalent equivalent. Example. However, any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims (9)

  1. 一种提高煅后焦换热器寿命的换热器结构,包括用于围成高温物料通道的外换热器和位于物料通道中心的内换热器,所述的外换热器包括一个环形上集箱(8)和一个环形下集箱(2),环形上集箱(8)设有出水口(6),环形下集箱(2)设有进水口(16),多根外换热管(3)分别与环形上集箱(8)和环形下集箱(2)固定连接并相通,相邻的两根外换热管(3)之间设有导热挡板(4),导热挡板(4)分别与所述的两根外换热管(3)、环形上集箱(8)和环形下集箱(2)固定连接,环形下集箱(2)下端安装下法兰板(1),环形上集箱(8)上端安装上法兰;所述的内换热器包括内上集箱(5)、内下集箱(15)和多根内换热管(17),内换热管(17)分别与内上集箱(5)和内下集箱(15)固定连接并相通,内上集箱(5)和内下集箱(15)的一端分别伸出导热挡板(4),其特征在于:所述上法兰由多个上法兰板(7)组合而成,每一个上法兰板(7)分别和环形上集箱(8)固定连接,且相邻两个上法兰板(7)通过下面的连接板(9)连接在一起,相邻两个上法兰板(7)之间留有缝隙,在缝隙内填充耐热材料(11)。 A heat exchanger structure for improving the life of a calcined coke heat exchanger comprises an outer heat exchanger for enclosing a high temperature material passage and an inner heat exchanger at a center of the material passage, the outer heat exchanger comprising a ring The upper header (8) and the annular lower header (2), the annular upper header (8) is provided with a water outlet (6), and the annular lower header (2) is provided with a water inlet (16), and the plurality of externally exchanged The heat pipe (3) is fixedly connected and communicated with the annular upper header (8) and the annular lower header (2) respectively, and a heat conducting baffle (4) is disposed between the adjacent two outer heat exchange tubes (3). The heat-conducting baffle (4) is fixedly connected to the two outer heat exchange tubes (3), the annular upper header (8) and the annular lower header (2), respectively, and the lower end of the annular lower header (2) is mounted. a blue plate (1), an upper flange is mounted on the upper end of the annular upper header (8); the inner heat exchanger comprises an inner upper header (5), an inner lower header (15) and a plurality of inner heat exchange tubes ( 17), the inner heat exchange tubes (17) are fixedly connected and communicated with the inner upper header (5) and the inner lower header (15), respectively, and one ends of the inner upper header (5) and the inner lower header (15) respectively Stretch a heat-conducting baffle (4), characterized in that: the upper flange is composed of a plurality of upper flange plates (7), and each upper flange plate (7) is fixedly connected to the annular upper header (8) And the two adjacent upper flange plates (7) are connected together through the lower connecting plate (9), and a gap is left between the adjacent two upper flange plates (7), and the gap is filled with heat-resistant material ( 11).
  2. 根据权利要求1所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的相邻两个上法兰板(7)之间的缝隙位于环形上集箱(8)的环焊缝(10)的正上方。A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 1, wherein the gap between the adjacent two upper flange plates (7) is located on the annular upper header (8) directly above the girth weld (10).
  3. 根据权利要求1所述的提高煅后焦换热器寿命的换热器结构,其特征在于:所述的上法兰由两个对称的上法兰板(7)组成。A heat exchanger structure for increasing the life of a calendered coke heat exchanger according to claim 1, wherein said upper flange is composed of two symmetrical upper flange plates (7).
  4. 根据权利要求1所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的上法兰板(7)的内边(18)位于环形上集箱(8)的管子轴线正上方。A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 1, characterized in that the inner edge (18) of the upper flange plate (7) is located on the annular upper header (8) ) is directly above the axis of the tube.
  5. 根据权利要求2所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的上法兰板(7)的内边(18)位于环形上集箱(8)的管子轴线正上方。 A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 2, wherein the inner edge (18) of the upper flange plate (7) is located on the annular upper header (8) ) is directly above the axis of the tube.
  6. 根据权利要求3所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的上法兰板(7)的内边(18)位于环形上集箱(8)的管子轴线正上方。 A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 3, characterized in that the inner edge (18) of the upper flange plate (7) is located on the annular upper header (8) ) is directly above the axis of the tube.
  7. 根据权利要求1所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的上法兰板(7)之间缝隙内的耐热材料(11)为耐热陶瓷纤维。A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 1, characterized in that the heat-resistant material (11) in the gap between the upper flange plates (7) is resistant Thermal ceramic fiber.
  8. 根据权利要求1所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的连接板(9)上开有对称的孔(19),上法兰板(7)上开有对称的螺栓孔,多个螺栓(12)穿过孔(19)和螺栓孔将连接板(9)和上法兰板(7)连接在一起,并用螺母(13)和垫圈(14)紧固。The heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 1, characterized in that: the connecting plate (9) is provided with a symmetrical hole (19) and an upper flange plate ( 7) A symmetrical bolt hole is opened, a plurality of bolts (12) are passed through the hole (19) and the bolt hole connects the connecting plate (9) and the upper flange plate (7) together, and the nut (13) and the washer are used. (14) Fastening.
  9. 根据权利要求8所述的一种提高煅后焦换热器寿命的换热器结构,其特征在于:所述的连接板(9)的孔(19)为长圆形。A heat exchanger structure for improving the life of a calendering coke heat exchanger according to claim 8, characterized in that the hole (19) of the connecting plate (9) is oblong.
PCT/CN2013/089966 2012-12-25 2013-12-19 Heat exchanger structure for extending service life of calcined coke heat exchanger WO2014101711A1 (en)

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