CN102976312B - Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger - Google Patents

Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger Download PDF

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Publication number
CN102976312B
CN102976312B CN201210568887.5A CN201210568887A CN102976312B CN 102976312 B CN102976312 B CN 102976312B CN 201210568887 A CN201210568887 A CN 201210568887A CN 102976312 B CN102976312 B CN 102976312B
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CN
China
Prior art keywords
heat exchanger
annular
flange
collecting chamber
plate
Prior art date
Application number
CN201210568887.5A
Other languages
Chinese (zh)
Other versions
CN102976312A (en
Inventor
王佐峰
王佐任
刘永启
郑斌
卞玉峰
高亮宝
张英杰
Original Assignee
潍坊联兴新材料科技股份有限公司
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Priority to CN201210568887.5A priority Critical patent/CN102976312B/en
Publication of CN102976312A publication Critical patent/CN102976312A/en
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Publication of CN102976312B publication Critical patent/CN102976312B/en

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Classifications

    • 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 capable of prolonging the service life of a calcined coke heat exchanger relates to a petroleum-coke pot-type calcining furnace, and is characterized in that an upper flange is composed of a plurality of upper flange plates (7), each upper flange plate (7) is fixedly connected with an annular upper header (8) and two adjacent upper flange plates (7) are connected through a connecting plate (9) at the lower side, a gap is formed between two adjacent upper flange plates (7) and a heatproof material (11) is filled in the gap. The upper flange of the heat exchanger structure capable of prolonging the service life of the calcined coke heat exchanger is composed of a plurality of upper flange plates; and the expansion gap is formed between two adjacent upper flange plates so that deformation due to that the thermal expansion of the upper flange is greater than the thermal expansion of the annular upper header can be effectively compensated and the stress of the welding joint between the upper flange and the annular upper header and that of the circular weld joint of the annular upper header can be reduced; as a result, the working reliability of the calcined coke heat exchanger is improved and the service life of the calcined coke heat exchanger is prolonged.

Description

A kind of heat exchanger structure that improves the calcined coke heat exchanger life-span

Technical field

A heat exchanger structure that improves the calcined coke heat exchanger life-span, relates to petroleum coke can-type calcine furnace, relates in particular to a kind of can-type calcine furnace high temperature calcined coke heat exchanger.

Background technology

In can-type calcine furnace, the calcining heat of petroleum coke is 1300 DEG C of left and right, petroleum coke after calcining is after discharging by drop-bottom, must carry out it airtight coolingly, cool the temperature to below 250 DEG C, avoid calcined coke run into the reaction of air generation oxidizing fire and cause the ablation of part calcined coke.At present, generally adopt water-cooling jacket to carry out high temperature calcined coke cooling, then by blow-off valve discharging.Water-cooling jacket is generally double-layer plate Welding Structure, and inner layer steel plate surrounds the passage of a high-temperature material; The annular gap space that forms sealing between inside and outside layer steel plate is cooling-water duct.When high temperature petroleum coke is when the water-cooling jacket, heat is conducted to the cooling water in mezzanine space by inner layer steel plate, cooling water deliver to again cooling tower or cooling pond and lower the temperature after recirculation.Because the heat transfer coefficient of petroleum coke is less, the material inhomogeneous cooling of this water-cooling jacket is even, and very fast near the high-temperature material cooling velocity of inner layer steel plate, temperature is lower; Ecto-entad, temperature of charge is more and more higher.Weifang Lianxing Carbon Co. discloses a kind of " cooling water jacket of petroleum coke can-type calcine furnace " (application number is ZL200810139761.X), adopt secondary heat exchange device (heat exchanger) for surrounding the one-level heat-exchanger rig (external heat exchanger) of high-temperature material passage and being positioned at high-temperature material channel center high-temperature material to be carried out cooling, cooling effect obtains larger improvement simultaneously.But between one-level heat-exchanger rig and the heat exchanger tube of secondary heat exchange device, also have larger space, the material at this place of space center is difficult to cooling.In the patent that Shandong Technology Univ is 201110187100.6 at the application number of declaring, a kind of " discharged material cooling device of pot calcination furnace for petroleum coke " disclosed, adopt, on the heat exchanger tube of interior heat exchanger and external heat exchanger, longitudinal fin is set, fin is deep into the internal layer of high-temperature material, both increased the effective heat exchange area of heat exchanger, effectively reduce again the heat transfer distances of internal layer material, solved preferably internal layer material and be difficult to cooling problem.When mounted, top is connected with the drop-bottom of can-type calcine furnace by the upper flange plate being welding as one with external heat exchanger above-mentioned two kinds of heat exchangers, and bottom is connected with blow-off valve by the lower flange plate being welding as one with external heat exchanger.The material temperature difference of turnover heat exchanger, up to 800 DEG C, produces very large thermal stress in heat exchanger.The particularly upper flange of external heat exchanger, not only the temperature of charge of contact is high, also directly contact with calcining furnace base plate, and temperature is very high, and expanded by heating is out of shape greatly, easily causes that weld seam between upper flange and annular upper collecting chamber and the butt girth welding seam of annular upper collecting chamber ftracture.

Summary of the invention

The technical problem to be solved in the present invention is: overcome the deficiencies in the prior art, a kind of calcined coke heat exchanger functional reliability that improves is provided, improve the calcined coke heat exchanger heat exchanger structure in service life.

The technical solution adopted for the present invention to solve the technical problems is: this kind improves the heat exchanger structure in calcined coke heat exchanger life-span, comprise external heat exchanger and the heat exchanger that is positioned at material channel center for surrounding high-temperature material passage, described external heat exchanger comprises an annular upper collecting chamber and an annular lower header, annular upper collecting chamber is provided with delivery port, annular lower header is provided with water inlet, many outer heat exchanger tubes are fixedly connected with and communicate with annular lower header with annular upper collecting chamber respectively, between two adjacent outer heat exchanger tubes, be all provided with heat conduction baffle plate, heat conduction baffle plate respectively with described two outer heat exchanger tubes, annular upper collecting chamber is fixedly connected with annular lower header, lower flange plate is installed in annular lower header lower end, flange is installed in annular upper collecting chamber upper end, described interior heat exchanger comprises interior upper collecting chamber, heat exchanger tube in interior lower header and Duo Gen, interior heat exchanger tube is fixedly connected with and communicates with interior lower header with interior upper collecting chamber respectively, heat conduction baffle plate is stretched out respectively in one end of interior upper collecting chamber and interior lower header, it is characterized in that: described upper flange is combined by multiple upper flange plates, each upper flange plate is fixedly connected with annular upper collecting chamber respectively, and adjacent two upper flange plates link together by connecting plate below, between adjacent two upper flange plates, leave gap, in gap, fill heat proof material.Upper flange is combined by multiple upper flange plates, between adjacent two blocks of upper flange plates, leave expansion gap, can the thermal expansion of effective compensation upper flange be greater than annular upper collecting chamber thermal expansion and the distortion that causes, between reduction upper flange and annular upper collecting chamber, the stress of weld seam and annular upper collecting chamber girth joint, has improved calcined coke heat exchanger functional reliability.

Gap between described adjacent two upper flange plates be positioned at annular upper collecting chamber girth joint directly over.

Preferably, described upper flange is made up of two symmetrical upper flange plates.

The inner edge of described upper flange plate is positioned at directly over the tube axis of annular upper collecting chamber.

Preferably, between described flanged plate, the heat proof material in gap is heat-stable ceramic fiber.

On described connecting plate, have symmetrical hole, have symmetrical bolt hole on upper flange plate, multiple bolts link together connecting plate and upper flange plate through hole and bolt hole, and fastening with nuts and washers.

The hole of described connecting plate is Long Circle.

Compared with prior art, the beneficial effect that the heat exchanger structure in this kind of raising calcined coke heat exchanger life-span has is:

1, the upper flange of heat exchanger is Split type structure, formed by multiple upper flange plates, each upper flange plate welds with annular upper collecting chamber respectively, between adjacent two upper flange plates, leave expansion gap, for compensating that the thermal expansion of upper flange plate is greater than annular upper collecting chamber thermal expansion and the distortion that causes effectively reduces the stress that between upper flange plate and annular upper collecting chamber, weld seam bears;

2, the girth joint of annular upper collecting chamber is below gap between adjacent two upper flange plates, and in the time that the thermal expansion of upper flange plate is greater than annular upper collecting chamber thermal expansion, the stress that the girth joint of annular upper collecting chamber bears is compression, girth joint can not torn;

3, the inner edge of upper flange plate is positioned at directly over the tube axis of annular upper collecting chamber, has reduced the contact area of upper flange plate and high temperature calcined coke, thereby reduces the thermal expansion distortion of upper flange plate.

Brief description of the drawings

Fig. 1 is the front view of the heat exchanger structure embodiment in this kind of raising calcined coke heat exchanger life-span.

Fig. 2 is A-A profile embodiment illustrated in fig. 1.

Fig. 3 is B-B profile embodiment illustrated in fig. 1.

Fig. 4 is the connecting plate schematic diagram of the heat exchanger structure embodiment in this kind of raising calcined coke heat exchanger life-span.

In figure: 1, lower flange plate 2, annular lower header 3, outer heat exchanger tube 4, heat conduction baffle plate 5, interior upper collecting chamber 6, delivery port 7, upper flange plate 8, annular upper collecting chamber 9, connecting plate 10, girth joint 11, heat proof material 12, bolt 13, nut 14, packing ring 15, interior lower header 16, water inlet 17, interior heat exchanger tube 18, inner edge 19, hole.

Detailed description of the invention

Fig. 1 ~ 4th, the most preferred embodiment of the heat exchanger structure in this kind of raising calcined coke heat exchanger life-span, the heat exchanger structure that improves the calcined coke heat exchanger life-span below in conjunction with 1 ~ 4 pair of this kind of accompanying drawing is described further.

With reference to accompanying drawing 1: a kind of calcined coke heat exchanger heat exchanger structure in service life that improves, comprise external heat exchanger and the heat exchanger that is positioned at material channel center for surrounding high-temperature material passage, external heat exchanger comprises an annular upper collecting chamber 8 and an annular lower header 2, annular upper collecting chamber 8 and an annular lower header 2 are ring pipe, annular upper collecting chamber 8 is provided with delivery port 6, and annular lower header 2 is provided with water inlet 16.Many outer heat exchanger tubes 3 are fixedly connected with and communicate with annular lower header 2 with annular upper collecting chamber 8 respectively, form the cooling water cavity of external heat exchanger.Between two adjacent outer heat exchanger tubes 3, be all provided with heat conduction baffle plate 4, heat conduction baffle plate 4 is fixedly connected with two outer heat exchanger tubes 3, annular upper collecting chamber 8 and annular lower header 2 respectively.Annular lower header 2 is fixedly connected with lower flange plate 1.

With reference to accompanying drawing 1,2: interior heat exchanger comprises heat exchanger tube 17 in an interior upper collecting chamber 5, interior lower header 15 and Duo Gen, interior upper collecting chamber 5 and interior lower header 15 are horizontal tube, interior heat exchanger tube 17 is many VERTICAL TUBE, and the outside that one end of interior upper collecting chamber 5 reaches external heat exchanger through heat conduction baffle plate 4 is connected with return pipe; The outside that the water inlet of interior lower header 15 reaches external heat exchanger through heat conduction baffle plate 4 is connected with feed pipe, and in each root, heat exchanger tube 17 is fixedly connected with and communicates with interior lower header 15 with interior upper collecting chamber 5 respectively.

With reference to accompanying drawing 1 ~ 3: the upper flange of heat exchanger is made up of two upper flange plates 7, and all opening two on each upper flange plate 7 has symmetrical bolt hole, and each upper flange plate 7 is fixedly connected with annular upper collecting chamber 8 respectively.Between two upper flange plates 7, leave gap, in gap, fill heat proof material 11, for sealing; Two girth joints 10 of annular upper collecting chamber 8 lay respectively at the below in gap between two upper flange plates 7; The inner edge 18 of upper flange plate 7 is positioned at directly over the tube axis of annular upper collecting chamber 8.A connecting plate 9 is set respectively below each seam of two upper flange plates 7, totally two of connecting plates 9, on each connecting plate 9, all have two symmetrical holes 19, bolt 12 is through the hole 19 on bolt hole and the connecting plate 9 of upper flange plate 7, and with packing ring 14, upper flange plate 7 is connected with connecting plate 9 with nut 13, as shown in Figure 4, hole 19 is Long Circle.

Wherein, the upper flange of heat exchanger can also be made up of plural multiple upper flange plates 7, and each upper flange plate 7 is fixedly connected with annular upper collecting chamber 8 respectively.

Wherein, the material of heat proof material 11 is heat-stable ceramic fiber, can also adopt the heat proof materials such as asbestos.

Operation principle is as follows: because heat exchanger is in the time working, the material temperature difference of turnover heat exchanger, up to 800 DEG C, produces very large thermal stress in heat exchanger.The particularly upper flange of external heat exchanger, not only the temperature of charge of contact is high, also directly contact with calcining furnace base plate, temperature is very high, expanded by heating distortion is large, easily cause the butt girth welding seam cracking of weld seam between upper flange and annular upper collecting chamber 8 and annular upper collecting chamber 8, upper flange is designed to Split type structure, formed by multiple upper flange plates 7, between adjacent two upper flange plates 7, leave expansion gap, expansion gap can compensate that 7 thermal expansions of upper flange plate are greater than annular upper collecting chamber 8 thermal expansions and the distortion that causes, effectively reduce the stress that between upper flange plate 7 and annular upper collecting chamber 8, weld seam bears.

The above, be only preferred embodiment of the present invention, is not the restriction of the present invention being made to other form, and any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed or be modified as the equivalent embodiment of equivalent variations.But every technical solution of the present invention content that do not depart from, any simple modification, equivalent variations and the remodeling above embodiment done according to technical spirit of the present invention, still belong to the protection domain of technical solution of the present invention.

Claims (1)

1. one kind is improved the heat exchanger structure in calcined coke heat exchanger life-span, comprise external heat exchanger and the heat exchanger that is positioned at material channel center for surrounding high-temperature material passage, described external heat exchanger comprises an annular upper collecting chamber (8) and an annular lower header (2), annular upper collecting chamber (8) is provided with delivery port (6), annular lower header (2) is provided with water inlet (16), many outer heat exchanger tubes (3) are fixedly connected with and communicate with annular lower header (2) with annular upper collecting chamber (8) respectively, between adjacent two outer heat exchanger tubes (3), be all provided with heat conduction baffle plate (4), heat conduction baffle plate (4) respectively with described two outer heat exchanger tubes (3), annular upper collecting chamber (8) is fixedly connected with annular lower header (2), lower flange plate (1) is installed in annular lower header (2) lower end, flange is installed in annular upper collecting chamber (8) upper end, described interior heat exchanger comprises interior upper collecting chamber (5), interior lower header (15) and many interior heat exchanger tubes (17), interior heat exchanger tube (17) is fixedly connected with and communicates with interior lower header (15) with interior upper collecting chamber (5) respectively, heat conduction baffle plate (4) is stretched out respectively in one end of interior upper collecting chamber (5) and interior lower header (15), it is characterized in that: described upper flange is combined by multiple upper flange plates (7), each upper flange plate (7) is fixedly connected with annular upper collecting chamber (8) respectively, and adjacent two upper flange plates (7) link together by connecting plate (9) below, between adjacent two upper flange plates (7), leave gap, in gap, fill heat proof material (11), heat proof material (11) between upper flange plate (7) in gap is heat-stable ceramic fiber, gap between described adjacent two upper flange plates (7) be positioned at annular upper collecting chamber (8) girth joint (10) directly over, described upper flange is made up of two symmetrical upper flange plates (7), the inner edge (18) of upper flange plate (7) is positioned at directly over the tube axis of annular upper collecting chamber (8), on connecting plate (9), have symmetrical hole (19), upper flange plate has symmetrical bolt hole on (7), multiple bolts (12) link together connecting plate (9) and upper flange plate (7) through hole (19) and bolt hole, and fastening with nut (13) and packing ring (14), the hole (19) of described connecting plate (9) is Long Circle.
CN201210568887.5A 2012-12-25 2012-12-25 Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger CN102976312B (en)

Priority Applications (1)

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CN201210568887.5A CN102976312B (en) 2012-12-25 2012-12-25 Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger
PCT/CN2013/089966 WO2014101711A1 (en) 2012-12-25 2013-12-19 Heat exchanger structure for extending service life of calcined coke heat exchanger

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CN102976312B true CN102976312B (en) 2014-10-29

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102976312B (en) * 2012-12-25 2014-10-29 潍坊联兴新材料科技股份有限公司 Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger
CN104697342B (en) * 2013-12-09 2017-08-15 沈阳铝镁设计研究院有限公司 The U-shaped the circulation cooling water system of open pattern of can-type calcine furnace and cooling means
CN103615903B (en) * 2013-12-19 2015-05-27 潍坊联兴新材料科技股份有限公司 Water-cooling hearth plate of petroleum coke tank-type calcining furnace
CN104006663B (en) * 2014-06-12 2015-07-15 济南中海炭素有限公司 Cooling device for materials after calcination of anthracite or petroleum coke
CN109405564A (en) * 2017-08-17 2019-03-01 沈阳铝镁设计研究院有限公司 A kind of waste-heat recovery device of pot type burner calcined coke
CN110553512A (en) * 2018-05-30 2019-12-10 沈阳铝镁设计研究院有限公司 Method for prolonging service life of cooling water jacket

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* Cited by examiner, † Cited by third party
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JPH0522159B2 (en) * 1983-10-21 1993-03-26 Asahi Glass Co Ltd
JP2006010133A (en) * 2004-06-23 2006-01-12 Taisei Corp Installation mechanism of heat exchange pipe in heat exchange system using foundation pile as structure
CN101362951B (en) * 2008-09-04 2011-10-12 潍坊联兴炭素有限公司 Cooling water jacket of petroleum coke can-type calcine furnace
CN201627626U (en) * 2009-10-27 2010-11-10 浙江吉利汽车研究院有限公司 Engine exhaust manifold
CN102288041B (en) * 2011-07-05 2013-01-23 山东理工大学 Discharging and cooling device for petroleum coke pot type calcining furnace
CN102976312B (en) * 2012-12-25 2014-10-29 潍坊联兴新材料科技股份有限公司 Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger

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CN102976312A (en) 2013-03-20

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Free format text: CORRECT: APPLICANT; FROM: WEIFANG LIANXING CARBON CO. TO: WEIFANG LIANXING NEW MATERIAL TECHNOLOGY CO., LTD.

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Denomination of invention: Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger

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Pledgee: Bank of Weifang, Limited by Share Ltd, Weicheng branch

Pledgor: WEIFANG LIANXING NEW MATERIAL TECHNOLOGY CO., LTD.

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Denomination of invention: Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger

Effective date of registration: 20171208

Granted publication date: 20141029

Pledgee: Bank of Weifang, Limited by Share Ltd, Weicheng branch

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Denomination of invention: Heat exchanger structure capable of prolonging service life of calcined coke heat exchanger

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