WO2018141245A1 - Échangeur de chaleur gaz/gaz du type à plaques - Google Patents

Échangeur de chaleur gaz/gaz du type à plaques Download PDF

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Publication number
WO2018141245A1
WO2018141245A1 PCT/CN2018/074764 CN2018074764W WO2018141245A1 WO 2018141245 A1 WO2018141245 A1 WO 2018141245A1 CN 2018074764 W CN2018074764 W CN 2018074764W WO 2018141245 A1 WO2018141245 A1 WO 2018141245A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
plate
heat exchanger
corrugated
heat exchange
Prior art date
Application number
PCT/CN2018/074764
Other languages
English (en)
Chinese (zh)
Inventor
吴俐俊
单方坚
王勇斌
施志炎
Original Assignee
孟莫克化工成套设备(上海)有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 孟莫克化工成套设备(上海)有限公司 filed Critical 孟莫克化工成套设备(上海)有限公司
Publication of WO2018141245A1 publication Critical patent/WO2018141245A1/fr

Links

Classifications

    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding

Definitions

  • the invention relates to the technical field of waste heat recovery energy-saving equipment, in particular to a novel plate type gas-gas heat exchanger, which can be applied to a power station boiler, an industrial heating furnace, a cracking furnace and the like.
  • Heat exchanger heat transfer methods are mainly divided into three types: heat conduction, convection and radiation.
  • the gas heat exchanger is a convection heat conduction method.
  • the process of transferring heat from a higher temperature portion of the object to a lower temperature portion or to another object having a lower temperature in contact with it is called heat conduction, referred to as heat conduction.
  • a gas heat exchanger is a device in which a high temperature gas transfers heat to a space with a low temperature.
  • the gas-fired heat exchangers used in power station boilers are mainly tubular and finned.
  • the flue gas is blown by the fan to achieve heat exchange.
  • Cross-flow heat exchange between flue gas and air is poor heat exchange capacity, requires a large amount of pipe consumption, and has a large area, and since the flue gas and the heat exchange tube are in vertical contact, the flow resistance is increased, the ash is easily accumulated, and the heat exchange tube is worn and added. Large, affecting the life of the air preheater.
  • a conventional heat-exchangers of the plate type is composed of a stamped and formed concave-convex stainless steel plate.
  • the embossed lines between the two phase plates are 180 degrees relative to each other, so that the ridge lines between the two plates of the plate heat exchanger form staggered contact points, and the contact points are vacuum welded to form a contact point.
  • the high-pressure staggered flow structure of the plate heat exchanger, these staggered flow structures make the hot and cold fluid in the plate heat exchanger generate strong turbulence to achieve high heat exchange effect.
  • the plate heat exchanger is composed of a set of corrugated metal plates with four corner holes for the two liquids for heat transfer to pass.
  • the metal sheet is mounted in a frame having a fixed plate and a movable pressing plate on one side and clamped by a clamp bolt.
  • the plates are provided with gaskets that seal the fluid passages and direct fluid flow alternately into the respective flow passages to form a heat exchange.
  • the flow, physical properties, pressure drop and temperature difference of the fluid determine the number and size of the plates.
  • the corrugated sheet not only increases the degree of turbulence, but also forms a number of support points sufficient to withstand the pressure difference between the media.
  • the metal plate and the movable plate pressing plate are suspended from the upper guide bar and are positioned by the lower guide bar, and the rod end is fixed on the support column.
  • the plate type gas-gas heat exchanger has the characteristics of compact structure, small occupied area, high heat transfer efficiency, etc.
  • the conventional plate heat exchanger has a compact structure, the flow path is complicated.
  • the flow resistance on both the flue gas side and the air side is very large, and the flue gas side is easy to accumulate ash to block the flow path.
  • the conventional cryogenic plate heat exchanger requires rubber ring seal, or spring strip compression, or a welded structure, which is not applicable.
  • the object of the present invention is to overcome the shortcomings of the current fin-and-tube type, tubular air preheater or other forms of plate-type gas heat exchangers, such as poor heat exchange capacity, easy ash accumulation and large flow resistance, thereby providing a plate type.
  • the gas-gas heat exchanger has a compact structure and an increased heat exchange area, and the flue gas is of an elliptical straight passage, which reduces the flow resistance on the flue gas side, and is not easy to wear the pipe wall, and is not easy to be ash-blocked. Even if the dust is accumulated, it is easy to clean, the corrugated passage between the air moving plates, the turbulence is enhanced, the heat transfer efficiency is improved, the structure is simple, and the production cost is low.
  • the present invention adopts the following technical solutions:
  • a plate type gas-gas heat exchanger comprises a corrugated plate heat exchange core body, a plate type gas-gas heat exchanger outer casing, a first gas medium inlet and outlet pipe, a second gas medium inlet and outlet pipe; and the corrugated plate heat exchange
  • the core body is disposed in the outer casing of the plate type gas-gas heat exchanger, and the first gas medium inlet and outlet pipes are disposed at upper and lower ends of the corrugated plate heat exchange core body, and the second gas medium is disposed on the left and right sides of the corrugated plate heat exchange core body Export line
  • the corrugated plate is formed by flat stamping to form a flat area, an inner plane area of the sheet and a corrugated area;
  • the corrugated plate heat exchange core body is formed by welding a plurality of sets of plate bundles according to two adjacent plate bundles in a plane region after the corrugated plates are stacked, the peaks are superimposed on the peaks, the troughs are superposed on the troughs, and the inside of the corrugated bundles is formed first.
  • the gas medium-like elliptical tubular passage is formed by stacking two adjacent bundles in a plane region to form a second gas medium shell path.
  • first gas medium-like elliptical straight channel formed inside the bundle is connected to the first gas medium inlet and outlet conduits.
  • the two adjacent bundles are welded to form a second gas medium shell-side passage after being stacked in the plane region, and are in communication with the second gas medium inlet and outlet conduits.
  • first gaseous medium exchanges heat with the second gaseous medium in a cross-flow.
  • first gaseous medium is flue gas and the second gaseous medium is air.
  • the inner part of the corrugated plate is provided with an inner plane area of the plate, and two adjacent plate bundles are stacked by the inner plane area of the plate, which acts as a reinforcing rib to support the entire air preheater structure.
  • the two adjacent corrugated plate heat exchange cores are connected to each other by a welded metal expansion joint.
  • the metal expansion joint absorbs the thermal expansion of the corrugated plate heat exchange core under working conditions.
  • the plate type gas-gas heat exchanger of the present invention takes the flue gas into the elliptical straight passage, has small flow resistance, and is not easily stained with ash, and is easy to be cleaned even if it is ash.
  • the plate type gas-gas heat exchanger of the present invention the plate bundle is welded by its own flat area, no need to add edge strips, the welding amount is small, and the structure is simple.
  • the plate type gas-gas heat exchanger of the invention has small investment cost, low cost, simple production process, and is easy to form a module, and is convenient to install;
  • the plate type gas-gas heat exchanger of the present invention is applicable not only to gas-gas heat exchange but also to gas-liquid and liquid-liquid heat exchange, and can be applied to food, brewing, machinery, chemical, petroleum, power, metallurgy, Heat exchange areas such as electricity and ships.
  • FIG. 1 is a schematic structural view of an embodiment of the present invention.
  • Figure 2 is a front elevational view of a corrugated sheet in the embodiment of the present invention.
  • Figure 3 is a plan view of a corrugated sheet in the embodiment of the present invention.
  • Figure 4 is a schematic view showing the stacking of heat exchange plates in the embodiment of the present invention.
  • Figure 5 is a schematic view showing the connection of the core of the bundle in the embodiment of the present invention.
  • Figure 6 is a waveform diagram of a corrugated plate in the embodiment of the present invention.
  • Figure 7 is a schematic view showing the welding of the air side end plate in the embodiment of the present invention.
  • a plate type gas-gas heat exchanger includes: a corrugated plate heat exchange core body 1, a plate type gas-gas heat exchanger outer casing 2, a flue gas outlet line 3, a flue gas inlet line 3', and an air outlet. Line 4, air outlet line 4'.
  • the corrugated sheet 8 is stamped from a flat plate to form an upper planar zone 9 and a lower planar zone 9', a left planar zone 10 and a right planar zone 10', and a plate inner planar zone 14
  • the corrugated area 11 the corrugation of the corrugated area is composed of an upper corrugation 16 and a lower corrugation 16'
  • the corrugation shape is a hyperbola
  • the bundle 5 is welded by the left plane area 10 and the right plane area 10' to form an elliptical tubular passage 6
  • the upper shell region 9 and the lower plane region 9' are welded to form the air shell path 7
  • the two plate bundles support the air passage between the plates through the inner plane region 14 of the plate to act as a reinforcing rib.
  • the corrugated plate heat exchange core body 1 is formed by stacking a plurality of sets of plate bundles 5 staggered by 1/2 type ellipse, and the corrugated plate piece 8 is formed by stacking the peaks 12 of the crests 12 and the troughs 13 to the troughs 13 .
  • the elliptical tubular passage 6 of the bundle is smoked, and the air shell passage 7 between the two bundles flows air, and the two mediums exchange heat in a cross-flow form, and the two bundles pass through the upper plane 9 and the lower plane 9'
  • the inner plane area 14 of the sheet is welded and stacked to support the structure of the entire plate type gas-gas heat exchanger.
  • the two bundle cores 1 are welded to both sides of the metal expansion joint 15 for modular installation for easy cleaning and inspection.
  • Fig. 7 when the pressure is high, the tube sheets are arranged in two sections on the air side, and a welded joint is adopted between the tube sheets and the bundles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un échangeur de chaleur gaz/gaz du type à plaques comprenant : un noyau d'échange de chaleur à plaques ondulées (1), une coque d'échangeur de chaleur gaz/gaz du type à plaques (2), des premières conduites d'entrée/sortie de milieu gazeux (3, 3') et des secondes conduites d'entrée/de sortie de milieu gazeux (4, 4') ; le noyau d'échange de chaleur à plaques ondulées (1) est agencé à l'intérieur de la coque d'échangeur de chaleur gaz/gaz du type à plaques (2), les premières conduites d'entrée/de sortie de milieu gazeux (3, 3') étant agencées sur les extrémités supérieure et inférieure du noyau d'échange de chaleur à plaques ondulées (1), et les secondes conduites d'entrée/de sortie de milieu gazeux (4, 4') étant agencées sur les côtés gauche et droit du noyau d'échange de chaleur à plaques ondulées (1) ; la plaque ondulée est composée d'une zone plane (9), d'une zone plane interne de plaque (14) et d'une zone ondulée (11) formée par estampage à plaque plate ; le noyau d'échange de chaleur à plaques ondulées (1) est formé par soudage d'une pluralité d'ensembles de faisceaux de plaques en deux faisceaux de plaques adjacents après l'empilement des plaques ondulées dans la zone plane, les pics d'ondulation (12) chevauchant les pics d'ondulation (12) et les creux d'ondulation (13) chevauchant les creux d'ondulation (13), un premier canal tubulaire elliptique de milieu gazeux (6) étant formé à l'intérieur des faisceaux de plaques (5), et un second canal de passage de coque de milieu gazeux (7) étant formé entre deux faisceaux de plaques adjacents après avoir été empilés dans la région plane et soudés.
PCT/CN2018/074764 2017-02-03 2018-01-31 Échangeur de chaleur gaz/gaz du type à plaques WO2018141245A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710063146.4 2017-02-03
CN201710063146.4A CN106705716A (zh) 2017-02-03 2017-02-03 一种板式气气热交换器

Publications (1)

Publication Number Publication Date
WO2018141245A1 true WO2018141245A1 (fr) 2018-08-09

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Application Number Title Priority Date Filing Date
PCT/CN2018/074764 WO2018141245A1 (fr) 2017-02-03 2018-01-31 Échangeur de chaleur gaz/gaz du type à plaques

Country Status (2)

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CN (1) CN106705716A (fr)
WO (1) WO2018141245A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106705716A (zh) * 2017-02-03 2017-05-24 孟莫克化工成套设备(上海)有限公司 一种板式气气热交换器
CN107514649A (zh) * 2017-07-27 2017-12-26 同济大学 板式大风量空气预热器
CN110095001A (zh) * 2019-05-13 2019-08-06 江苏双良低碳产业技术研究院有限公司 一种高压储氢用风冷混合型印刷线路板式换热器
EP3738657A1 (fr) * 2019-05-16 2020-11-18 Alfa Laval Corporate AB Échangeur de chaleur à plaques, plaque d'échange de chaleur et procédé de traitement d'un flux tel que de l'eau de mer
CN110220400B (zh) * 2019-05-17 2024-03-29 天津华赛尔传热设备有限公司 一种全焊接板式气气换热器
CN110529873A (zh) * 2019-07-19 2019-12-03 上海瑞晨环保科技股份有限公司 一种高效板式空气预热器
CN110848719B (zh) * 2019-11-23 2021-08-24 济南章运机械科技有限公司 一种催化燃烧装置
CN112807926B (zh) * 2021-01-05 2022-12-09 长沙有色冶金设计研究院有限公司 湿法冶金尾气洗涤装置及方法
CN115318017A (zh) * 2022-07-28 2022-11-11 青海丽豪半导体材料有限公司 一种tcs预冷还原尾气节能装置
CN115752040B (zh) * 2022-12-23 2023-08-15 宁波连通设备集团有限公司 一种塑料板热交换器
CN116202102B (zh) * 2023-05-06 2023-08-08 厦门铭光能源科技有限公司 一种电站专用热波纹板式空气预热器

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JPH09152297A (ja) * 1995-11-30 1997-06-10 Sanyo Electric Co Ltd プレート式熱交換器
WO2011159245A2 (fr) * 2010-06-18 2011-12-22 Alfa Laval Corporate Ab Échangeur de chaleur à plaques et procédé de production d'un échangeur de chaleur à plaques
CN202734627U (zh) * 2012-08-14 2013-02-13 覃新川 一种板式换热器
CN102954459A (zh) * 2012-11-12 2013-03-06 同济大学 一种新型板式省煤器
CN203069018U (zh) * 2012-12-18 2013-07-17 同济大学 一种板式换热器
CN103759288A (zh) * 2014-01-06 2014-04-30 同济大学 新型板式空气预热器
CN106705716A (zh) * 2017-02-03 2017-05-24 孟莫克化工成套设备(上海)有限公司 一种板式气气热交换器
CN206656631U (zh) * 2017-02-03 2017-11-21 孟莫克化工成套设备(上海)有限公司 一种板式气气热交换器

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GB1216306A (en) * 1967-03-31 1970-12-16 Marston Excelsior Limiited Plate-type heat exchangers
CN101672587B (zh) * 2009-09-28 2011-05-04 南京宜热纵联节能科技有限公司 一种气相板式换热器
CN203687708U (zh) * 2014-01-17 2014-07-02 甘肃润华重工科技集团有限公司 一种热交换器板以及板组

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09152297A (ja) * 1995-11-30 1997-06-10 Sanyo Electric Co Ltd プレート式熱交換器
WO2011159245A2 (fr) * 2010-06-18 2011-12-22 Alfa Laval Corporate Ab Échangeur de chaleur à plaques et procédé de production d'un échangeur de chaleur à plaques
CN202734627U (zh) * 2012-08-14 2013-02-13 覃新川 一种板式换热器
CN102954459A (zh) * 2012-11-12 2013-03-06 同济大学 一种新型板式省煤器
CN203069018U (zh) * 2012-12-18 2013-07-17 同济大学 一种板式换热器
CN103759288A (zh) * 2014-01-06 2014-04-30 同济大学 新型板式空气预热器
CN106705716A (zh) * 2017-02-03 2017-05-24 孟莫克化工成套设备(上海)有限公司 一种板式气气热交换器
CN206656631U (zh) * 2017-02-03 2017-11-21 孟莫克化工成套设备(上海)有限公司 一种板式气气热交换器

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