TWI757942B - gas to gas heat exchanger - Google Patents

gas to gas heat exchanger Download PDF

Info

Publication number
TWI757942B
TWI757942B TW109137797A TW109137797A TWI757942B TW I757942 B TWI757942 B TW I757942B TW 109137797 A TW109137797 A TW 109137797A TW 109137797 A TW109137797 A TW 109137797A TW I757942 B TWI757942 B TW I757942B
Authority
TW
Taiwan
Prior art keywords
arrangement
heat
tube
gas
linear
Prior art date
Application number
TW109137797A
Other languages
Chinese (zh)
Other versions
TW202124898A (en
Inventor
香川晴治
落合亮太
齋藤𨺓行
石坂浩
大森一朗
Original Assignee
日商三菱動力股份有限公司
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 日商三菱動力股份有限公司 filed Critical 日商三菱動力股份有限公司
Publication of TW202124898A publication Critical patent/TW202124898A/en
Application granted granted Critical
Publication of TWI757942B publication Critical patent/TWI757942B/en

Links

Images

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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-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 being arranged in parallel spaced relation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/006—Layout of treatment plant
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • F28F9/007—Auxiliary supports for elements
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Treating Waste Gases (AREA)
  • Chimneys And Flues (AREA)

Abstract

[課題]抑制沿著排氣之流通方向的熱交換捆包之列數的增加，並將所期望的傳熱管配列模式構成於氣體流通路。 [課題手段]將熱交換捆包(41)從排氣的上游側往下游側複數列配置成直列狀，在複數列熱交換捆包(41)的各個，是將複數個直線狀管部(45)配置成與排氣的流通方向交叉，前述熱交換捆包是藉由使傳熱管(12)的複數個直線狀管部(45)彼此分開並排成塊體狀的傳熱管群來構成。複數個熱交換捆包(41)，含有使第1配列管群(51)與第2配列管群(52)設在同一捆包內來形成傳熱管群的配管模式混合捆包(41A)，該第1配列管群是使與直線狀管部(45)大致正交之管正交剖面的複數個直線狀管部(45)的配管模式成為第1配列，該第2配列管群是使設在第1配列管群(51)之下游側的複數個直線狀管部(45)的配管模式成為與第1配列不同的第2配列。[Problem] An increase in the number of rows of heat exchange packs along the flow direction of the exhaust gas is suppressed, and a desired heat transfer tube arrangement pattern is formed in the gas flow passage. [Problem means] The heat exchange packs (41) are arranged in a plurality of rows from the upstream side of the exhaust gas to the downstream side, and a plurality of linear pipe portions ( 45) Arranged to cross the flow direction of the exhaust gas, and the heat exchange package is a heat transfer tube group formed by separating a plurality of linear tube portions (45) of the heat transfer tubes (12) from each other and arranging them in a block shape to constitute. A plurality of heat exchange packs (41) including a piping pattern mixed pack (41A) in which a first arrangement tube group (51) and a second arrangement tube group (52) are arranged in the same package to form a heat transfer tube group , the first arrangement pipe group is a piping pattern of a plurality of linear pipe portions (45) having a pipe orthogonal cross-section that is substantially orthogonal to the linear pipe portion (45) as the first arrangement, and the second arrangement pipe group is The piping pattern of the plurality of linear pipe portions (45) provided on the downstream side of the first arrangement pipe group (51) is set to a second arrangement that is different from the first arrangement.

Description

氣體對氣體的熱交換器gas to gas heat exchanger

本發明，是關於進行熱媒與排氣之熱交換的氣體對氣體的熱交換器。The present invention relates to a gas-to-gas heat exchanger for performing heat exchange between a heat medium and exhaust gas.

為了處理在火力發電廠等使用之鍋爐的排氣(排煙)，周知有在排氣流通經路設置空氣預熱器、GGH熱回收器、集塵裝置、濕式排煙脫硫裝置、以及GGH再加熱器的排氣處理系統。在GGH熱回收器，進行來自排氣的熱回收，在濕式排煙脫硫裝置，藉由氣液接觸來去除排氣中的硫磺氧化物及煤塵的一部分。濕式排煙脫硫裝置中，被冷卻至飽和氣體溫度為止的排氣，是在GGH再加熱器中，利用以GGH熱回收器所回收的熱來升溫之後，從煙囪排出。In order to treat the exhaust gas (smoke) of boilers used in thermal power plants, etc., it is known to install an air preheater, a GGH heat recovery device, a dust collector, a wet flue gas desulfurization device, and Exhaust gas treatment system for GGH reheaters. In the GGH heat recovery device, heat recovery from the exhaust gas is performed, and in the wet flue gas desulfurization device, a part of sulfur oxides and coal dust in the exhaust gas are removed by gas-liquid contact. In the wet flue gas desulfurization device, the exhaust gas cooled to the saturated gas temperature is heated up by the heat recovered by the GGH heat recovery device in the GGH reheater, and then discharged from the chimney.

於專利文獻1記載著，在上述排氣處理系統中，是將GGH再加熱器的氣體流通路，分成上游側的上游域、下游側的下游域、上游域與下游域之間的中游域，在上游域與中游域與下游域，配置各自的熱交換捆包(上游捆包、中游捆包及下游捆包)。所謂熱交換捆包，是作為流動有熱媒的傳熱管之構成單位，組合傳熱管來塊體化(單元化)而成的傳熱管群之結構體。於專利文獻1揭示出，將上游捆包、中游捆包及下游捆包的各個，以藉由上下重疊的3層熱交換捆包(上層捆包、中層捆包及下層捆包)來構成的例子。It is described in Patent Document 1 that, in the above-mentioned exhaust gas treatment system, the gas flow passage of the GGH reheater is divided into an upstream region on the upstream side, a downstream region on the downstream side, and a midstream region between the upstream region and the downstream region, In the upstream domain, the midstream domain, and the downstream domain, respective heat exchange packs (upstream packs, midstream packs, and downstream packs) are arranged. The so-called heat exchange package is a structure of a heat transfer tube group formed by combining the heat transfer tubes to form a block (unitized) as a constituent unit of the heat transfer tubes in which the heat medium flows. Patent Document 1 discloses that each of the upstream pack, the middle pack, and the downstream pack is constituted by three layers of heat exchange packs (upper pack, middle pack, and lower pack) stacked up and down. example.

且，於專利文獻1記載著，使GGH再加熱器之上游捆包的傳熱管配列模式成為交錯配列，使中游捆包及下游捆包的傳熱管配列模式成為正方配列，來將各捆包間予以連接成使熱媒從上游捆包經由下游捆包而往中游捆包流動之構造的例子。 [先前技術文獻] [專利文獻]In addition, it is described in Patent Document 1 that the arrangement pattern of the heat transfer tubes bundled upstream of the GGH reheater is a staggered arrangement, and the arrangement pattern of the heat transfer tubes of the midstream and downstream packages is a square arrangement, so that each bundle is arranged. An example of a structure in which the bales are connected so that the heat medium flows from the upstream bale to the downstream bale to the intermediate bale. [Prior Art Literature] [Patent Literature]

[專利文獻1]國際公開第2018/139669號[Patent Document 1] International Publication No. 2018/139669

[發明所欲解決之問題][Problems to be Solved by Invention]

在專利文獻1的GGH再加熱器，上游捆包、中游捆包及下游捆包，是分別作為高溫預熱部、低溫部及高溫部來發揮功能，所導入的排氣依序流通於交錯配列的高溫預熱部、正方配列的低溫部及高溫部而升溫，故可提高GGH再加熱器的熱交換效率。且，可提高從濕式排煙脫硫裝置飛散的霧氣與上游捆包的傳熱管衝突的效率(高溫預熱部的霧氣蒸發效率)，抑制霧氣對低溫部及高溫部之傳熱管的附著，可抑制長年使用所致之壓損的上升。In the GGH reheater of Patent Document 1, the upstream pack, the midstream pack, and the downstream pack function as a high-temperature preheating section, a low-temperature section, and a high-temperature section, respectively, and the introduced exhaust gas flows through the staggered row in sequence. The temperature of the high temperature preheating part, the low temperature part and the high temperature part arranged squarely is increased, so the heat exchange efficiency of the GGH reheater can be improved. In addition, it is possible to improve the efficiency of the collision between the mist scattered from the wet flue gas desulfurization device and the heat transfer tubes of the upstream packing (the mist evaporation efficiency of the high temperature preheating section), and suppress the effect of the mist on the heat transfer tubes of the low temperature section and the high temperature section. Adhesion can suppress the increase in pressure loss due to long-term use.

但是，在專利文獻1的GGH再加熱器(氣體對氣體的熱交換器)，是沿著排氣的流通方向設置3列的傳熱管捆包(上游捆包、中游捆包及下游捆包)，且將各列傳熱管捆包的傳熱管配列模式設定成相同配列模式(在上游捆包為交錯配列、在中游捆包及下游捆包為正方配列)，故例如欲將專利文獻1的構造適用於沿著排氣的流通方向設有2列傳熱管捆包之既有的氣體對氣體的熱交換器的話，除了既有的2列熱交換捆包以外，還必須設置新的1列熱交換捆包，有必要大規模的修改。However, in the GGH reheater (gas-to-gas heat exchanger) of Patent Document 1, three rows of heat transfer tube packs (upstream pack, midstream pack, and downstream pack) are arranged along the flow direction of the exhaust gas. ), and set the heat transfer tube arrangement pattern of the heat transfer tube packing in each row to the same arrangement pattern (staggered arrangement in upstream packing, square arrangement in midstream packing and downstream packing), for example If the structure is suitable for the existing gas-to-gas heat exchanger with 2 rows of heat transfer tube bundles along the flow direction of the exhaust gas, a new 1 row of heat exchangers must be installed in addition to the existing 2 rows of heat exchange bundles. To swap bundles, massive revisions were necessary.

於是本發明，目的在於提供氣體對氣體的熱交換器，可抑制沿著排氣之流通方向的熱交換捆包之列數的增加，並將所期望的傳熱管配列模式構成於氣體流通路。 [解決問題之技術手段]Therefore, the object of the present invention is to provide a gas-to-gas heat exchanger capable of suppressing an increase in the number of rows of heat exchange packs along the flow direction of exhaust gas, and to configure a desired heat transfer tube arrangement pattern in the gas flow path . [Technical means to solve problems]

為了達成上述目的，本發明的第1態樣，是氣體對氣體的熱交換器，其將熱交換捆包從排氣的上游側往下游側複數列配置成直列狀，在複數列熱交換捆包的各個，是將複數個直線狀管部配置成與排氣的流通方向交叉，前述熱交換捆包是藉由使傳熱管的複數個直線狀管部彼此分開並排成塊體狀的傳熱管群來構成。複數個熱交換捆包，含有使第1配列管群與第2配列管群設在同一捆包內來形成傳熱管群的配管模式混合捆包，該第1配列管群是使與直線狀管部大致正交之管正交剖面的複數個直線狀管部的配管模式成為第1配列，該第2配列管群是使設在第1配列管群之下游側的複數個直線狀管部的配管模式成為與第1配列不同的第2配列。In order to achieve the above object, a first aspect of the present invention is a gas-to-gas heat exchanger in which heat exchange packs are arranged in a plurality of rows from the upstream side of the exhaust gas to the downstream side, and the plurality of rows of heat exchange packs are arranged in a row. In each of the packs, a plurality of linear tube portions are arranged to intersect with the flow direction of the exhaust gas, and the heat exchange packs are arranged in a block shape by separating the plurality of linear tube portions of the heat transfer tubes from each other. Heat transfer tubes are formed. A plurality of heat exchange packages, including a piping pattern mixed package in which a first arrangement tube group and a second arrangement tube group are arranged in the same package to form a heat transfer tube group, and the first arrangement tube group is arranged in a linear shape. A piping pattern of a plurality of linear pipe portions having a pipe orthogonal cross-section whose pipe portions are substantially orthogonal is a first arrangement, and the second arrangement pipe group is a plurality of linear pipe portions provided on the downstream side of the first arrangement pipe group. The piping pattern of the 2nd arrangement is different from the 1st arrangement.

上述構造，是在一個熱交換捆包內設置配管模式彼此不同的第1配列管群與第2配列管群，故可抑制沿著排氣之流通方向的熱交換捆包之列數的增加，並將所期望的傳熱管配列模式構成於氣體流通路。In the above structure, the first arrangement tube group and the second arrangement tube group with different piping patterns are provided in one heat exchange package, so that the increase in the number of lines of the heat exchange package along the flow direction of the exhaust gas can be suppressed. A desired arrangement pattern of heat transfer tubes is formed in the gas flow passage.

本發明的第2態樣，是在從排氣進行熱回收的熱回收器之下游側，且在藉由氣液接觸來去除排氣中之硫磺氧化物的脫硫裝置之下游側，作為再加熱器來配置之第1態樣的氣體對氣體的熱交換器，複數個熱交換捆包，含有配管模式混合捆包、配置在配管模式混合捆包之下游側的下游側熱交換捆包。第1配列管群，是使複數個直線狀管部配列成交錯狀的交錯配列管群。第2配列管群，是使複數個直線狀管部配列成正方格子狀的正方配列管群。在交錯配列管群，從熱回收器流入有熱媒。交錯配列管群與下游側熱交換捆包的傳熱管群，是以流通於交錯配列管群的熱媒流通於下游側熱交換捆包之傳熱管群的方式，被第1連接管給連接。下游側熱交換捆包的傳熱管群與正方配列管群，是以流通於下游側熱交換捆包之傳熱管群的熱媒流通於正方配列管群的方式，被第2連接管給連接。In the second aspect of the present invention, the downstream side of the heat recovery device that recovers heat from the exhaust gas is downstream of the desulfurization device that removes sulfur oxides in the exhaust gas by gas-liquid contact. The gas-to-gas heat exchanger of the first aspect in which the heaters are arranged includes a plurality of heat exchange packs, including a piping-mode mixed pack and a downstream heat exchange pack arranged on the downstream side of the piping-mode mixed pack. The first arrangement tube group is a staggered arrangement tube group in which a plurality of linear tube portions are arranged in a staggered manner. The second arrangement pipe group is a square arrangement pipe group in which a plurality of linear pipe portions are arranged in a square lattice shape. In the staggered tube group, a heat medium flows in from the heat recovery device. The staggered tube group and the heat transfer tube group of the downstream heat exchange package are supplied by the first connecting pipe in such a way that the heat medium flowing through the staggered tube group flows through the heat transfer tube group of the downstream heat exchange package. connect. The heat transfer tube group and the square-arranged tube group of the downstream heat exchange pack are supplied by the second connecting pipe in such a way that the heat medium flowing through the heat-transfer tube group of the downstream side heat-exchange pack flows through the square-arrangement tube group. connect.

在上述構造，交錯配列管群、正方配列管群及下游側熱交換捆包(構成下游側熱交換捆包的傳熱管群)，是作為高溫預熱部、低溫部及高溫部來各自發揮功能，所導入的排氣，會依序通過交錯配列的高溫預熱部、正方配列的低溫部及高溫部而升溫，故可提高再加熱器(氣體對氣體的熱交換器)之熱交換的效率。且，可提高從脫硫裝置飛散的霧氣與交錯配列管群的直線狀管部衝突的效率(高溫預熱部的霧氣蒸發效率)，抑制低溫部及高溫部對傳熱管之霧氣的附著，可抑制長年使用所致之壓損的上升。In the above structure, the staggered tube group, the square tube group, and the downstream heat exchange pack (the heat transfer tube group constituting the downstream heat exchange pack) function as the high-temperature preheating section, the low-temperature section, and the high-temperature section, respectively. Function, the introduced exhaust gas will sequentially pass through the high temperature preheating part arranged in a staggered arrangement, the low temperature part and the high temperature part arranged in a square arrangement, so it can improve the heat exchange efficiency of the reheater (gas-to-gas heat exchanger). efficiency. In addition, the efficiency of collision between the mist scattered from the desulfurization device and the linear pipe portion of the staggered tube group (the mist evaporation efficiency of the high-temperature preheating portion) can be improved, and the adhesion of the mist of the low-temperature portion and the high-temperature portion to the heat transfer tube can be suppressed, It can suppress the increase of pressure loss caused by long-term use.

本發明的第3態樣，是第2態樣的氣體對氣體的熱交換器中，交錯配列管群的直線狀管部，是以裸管規格的裸管部所構成，正方配列管群的直線狀管部與下游側熱交換捆包的直線狀管部，是以翅片管規格的翅片管部所構成。A third aspect of the present invention is the gas-to-gas heat exchanger according to the second aspect, wherein the linear tube portions of the staggered arrangement of the tube groups are constituted by the bare tube portions of the bare-tube specification, and the tube groups are arranged squarely. The linear pipe part and the linear pipe part of the downstream heat exchange pack are constituted by the finned pipe part of the finned pipe specification.

在上述構造，交錯配列管群的直線狀管部是以裸管規格的裸管部來構成，故可抑制霧氣對高溫預熱部之傳熱管的附著，而抑制長年使用所致之壓損的上升。且，正方配列管群的直線狀管部與下游側熱交換捆包的直線狀管部是以翅片管規格的翅片管部來構成，故可提高低溫部及高溫部之熱交換的效率。In the above structure, the linear tube portion of the staggered tube group is composed of a bare tube portion, so that the adhesion of mist to the heat transfer tube of the high-temperature preheating section can be suppressed, and the pressure loss due to long-term use can be suppressed. rise. In addition, the linear tube portion of the square-arranged tube group and the linear tube portion of the downstream heat exchange pack are constituted by the finned tube portion of the finned tube specification, so the efficiency of heat exchange between the low temperature portion and the high temperature portion can be improved. .

本發明的第4態樣，是第3態樣的氣體對氣體的熱交換器中，正方配列管群之直線狀管部之翅片管部的翅片間距為5.0mm以上10.0mm以下。且，本發明的第5態樣，是第3或第4態樣的氣體對氣體的熱交換器中，下游側熱交換捆包之直線狀管部之翅片管部的翅片間距為5.0mm以上10.0mm以下。A fourth aspect of the present invention is the gas-to-gas heat exchanger of the third aspect, wherein the fin pitch of the finned tube portion of the linear tube portion of the squarely arranged tube group is 5.0 mm or more and 10.0 mm or less. Furthermore, a fifth aspect of the present invention is the gas-to-gas heat exchanger according to the third or fourth aspect, wherein the fin pitch of the finned tube portion of the linear tube portion of the downstream heat exchange pack is 5.0 mm or more and 10.0mm or less.

上述構造，能解除在鄰接的翅片管部之間經時累積灰塵等的問題，可穩定運用氣體對氣體的熱交換器。With the above-described structure, the problem of accumulation of dust and the like between the adjacent finned tube portions over time can be eliminated, and the gas-to-gas heat exchanger can be stably operated.

本發明的第6態樣，是第2至第5之任一態樣的氣體對氣體的熱交換器中，將交錯配列管群配置成使在交錯配列管群的直線狀管部之間流動的排氣之流速為8m/s以上16m/s以下。A sixth aspect of the present invention is the gas-to-gas heat exchanger according to any one of the second to fifth aspects, wherein the staggered arrangement of tubes is arranged so as to flow between the linear tube portions of the staggered arrangement of tubes. The flow rate of the exhaust gas is above 8m/s and below 16m/s.

上述構造，可在再加熱器內之上游側的第1配列管群(交錯配列管群)中，提高霧氣去除率(從脫硫裝置飛散之霧氣的去除率)，提升霧氣去除性能。因此，可降低下游側之第2配列管群或下游側熱交換捆包之直線狀管部(以翅片管部來構成直線狀管部之情況時的翅片管部)的腐蝕(霧氣所致之腐蝕)，可穩定運用氣體對氣體的熱交換器。 [發明之效果]The above structure can improve the mist removal rate (removal rate of mist scattered from the desulfurization device) in the first arrangement pipe group (staggered arrangement pipe group) on the upstream side in the reheater, and improve the mist removal performance. Therefore, it is possible to reduce the corrosion of the second arrangement tube group on the downstream side or the linear tube portion of the downstream heat exchange pack (the finned tube portion when the linear tube portion is constituted by the finned tube portion). Corrosion caused), which can stably use gas-to-gas heat exchangers. [Effect of invention]

根據本發明的氣體對氣體的熱交換器，可抑制沿著排氣之流通方向的熱交換捆包之列數的增加，並將所期望的傳熱管配列模式構成於氣體流通路。According to the gas-to-gas heat exchanger of the present invention, an increase in the number of rows of heat exchange bundles along the flow direction of the exhaust gas can be suppressed, and a desired arrangement pattern of heat transfer tubes can be formed in the gas flow passage.

針對本發明的一實施形態，參照圖式來說明。又，在以下的說明中，圖中以箭頭X、-X、Y、-Y、Z、-Z所示之方向(側)，是各自定為前方(前側)、後方(後側)、右方(右側)、左方(左側)、上方(上側)、下方(下側)。An embodiment of the present invention will be described with reference to the drawings. In addition, in the following description, the directions (sides) indicated by the arrows X, -X, Y, -Y, Z, -Z in the drawings are defined as front (front), rear (rear), and right, respectively. side (right side), left side (left side), above (upper side), down (lower side).

如圖1所示般，本實施形態之排煙處理系統(發電廠)S的排氣流通經路，直列狀地設有：空氣預熱器(A/H)3、作為氣體對氣體的熱交換器(GGH：Gas Gas Heater)之一例的GGH熱回收器4、集塵裝置(EP：Electrostatic Precipitator)5、風扇6、濕式排煙脫硫裝置(FGD：Flue Gas Desulfurization)7、作為氣體對氣體的熱交換器之一例的GGH再加熱器8、及煙囪9，來自鍋爐1的排氣，是依序流通於空氣預熱器3、GGH熱回收器4、集塵裝置5、風扇6、濕式排煙脫硫裝置7、及GGH再加熱器8而從煙囪9排出。在本實施形態，雖將本發明適用於GGH再加熱器8，但亦可將本發明適用於GGH熱回收器4。且，亦可將本發明適用於其他系統的GGH。且，在鍋爐1與空氣預熱器3之間設置去除排氣中之氮氧化物的脫硝裝置亦可。As shown in FIG. 1, the exhaust gas flow passage of the exhaust gas treatment system (power plant) S according to the present embodiment is provided in line with: an air preheater (A/H) 3, a gas-to-gas heat GGH heat recovery device 4 which is an example of exchanger (GGH: Gas Gas Heater), dust collector (EP: Electrostatic Precipitator) 5, fan 6, wet flue gas desulfurization device (FGD: Flue Gas Desulfurization) 7, as gas For the GGH reheater 8 and the chimney 9, which are examples of the heat exchangers for gas, the exhaust gas from the boiler 1 is circulated through the air preheater 3, the GGH heat recovery device 4, the dust collector 5, and the fan 6 in this order. , the wet flue gas desulfurization device 7, and the GGH reheater 8 are discharged from the chimney 9. In the present embodiment, the present invention is applied to the GGH reheater 8 , but the present invention may also be applied to the GGH heat recovery device 4 . Furthermore, the present invention can also be applied to GGHs of other systems. Furthermore, a denitration device for removing nitrogen oxides in the exhaust gas may be provided between the boiler 1 and the air preheater 3 .

在空氣預熱器3，排氣與對鍋爐1的燃燒用空氣進行熱交換。在GGH熱回收器4，進行來自排氣的熱回收，在集塵裝置5，去除排氣中之煤塵的大半。風扇6使排氣升壓，在濕式排煙脫硫裝置7，藉由氣液接觸來去除排氣中之硫磺氧化物及煤塵的一部分。濕式排煙脫硫裝置7中，被冷卻至飽和氣體溫度為止的排氣，是在GGH再加熱器8中，利用以GGH熱回收器4所回收的熱來升溫(熱交換、再加熱)之後，從煙囪9排出。In the air preheater 3 , the exhaust gas exchanges heat with the combustion air for the boiler 1 . In the GGH heat recovery device 4, heat recovery from the exhaust gas is performed, and in the dust collector 5, most of the coal dust in the exhaust gas is removed. The fan 6 increases the pressure of the exhaust gas, and the wet flue gas desulfurization device 7 removes a part of sulfur oxides and coal dust in the exhaust gas by gas-liquid contact. In the wet flue gas desulfurization device 7, the exhaust gas cooled to the saturated gas temperature is heated in the GGH reheater 8 using the heat recovered by the GGH heat recovery device 4 (heat exchange, reheating) After that, it is discharged from the chimney 9 .

如圖2所示般，本實施形態的排煙處理系統S中，GGH熱回收器4的傳熱管11與GGH再加熱器8的傳熱管12，是藉由連絡配管13來連絡。連絡配管13，具有：從GGH熱回收器4往GGH再加熱器8的熱媒流路亦即連絡配管13A、從GGH再加熱器8往GGH熱回收器4的熱媒流路亦即連絡配管13B。在連絡配管13設有熱媒循環泵14，成為藉由熱媒循環泵14來使熱媒循環的系統(熱媒循環系統)。在熱媒循環系統，設有用來吸收系統內之熱媒之膨脹的熱媒槽15。在從GGH熱回收器4往GGH再加熱器8的熱媒流路亦即連絡配管13A，設有為了可在各種條件下穩定運用而控制熱媒溫度(控制在既定溫度以上)的熱媒加熱器16。As shown in FIG. 2 , in the exhaust gas treatment system S of the present embodiment, the heat transfer pipe 11 of the GGH heat recovery device 4 and the heat transfer pipe 12 of the GGH reheater 8 are connected by a communication pipe 13 . The connection piping 13 includes connection piping 13A, which is a heat medium flow path from the GGH heat recovery unit 4 to the GGH reheater 8, and connection piping, which is a heat medium flow path from the GGH reheater 8 to the GGH heat recovery unit 4. 13B. The heat medium circulation pump 14 is provided in the communication piping 13, and it becomes a system (heat medium circulation system) which circulates a heat medium by the heat medium circulation pump 14. In the heat medium circulation system, there is a heat medium tank 15 for absorbing the expansion of the heat medium in the system. Connecting piping 13A, which is a heat medium flow path from GGH heat recovery unit 4 to GGH reheater 8, is provided with a heat medium heater whose temperature is controlled (a predetermined temperature or higher) for stable operation under various conditions. device 16.

如圖3所示般，GGH熱回收器4及GGH再加熱器8，具有作為筐體的殼體31。殼體31，具有：底板(下遮罩)32、背面板(背面遮罩)33、頂板(上遮罩)34。在殼體31的前部，支撐有於上下方向延伸的捆包間遮罩35。捆包間遮罩35，於上下方向(鉛直方向)延伸，在左右方向(排氣流通方向)空出事先預定的間隔來複數配置。被捆包間遮罩35所覆蓋的區域，是保養時或零件交換時等作業員可進入的空間。As shown in FIG. 3 , the GGH heat recovery device 4 and the GGH reheater 8 have a casing 31 as a casing. The casing 31 has a bottom plate (lower cover) 32 , a back plate (back cover) 33 , and a top plate (upper cover) 34 . In the front part of the casing 31, the inter-bales cover 35 extending in the up-down direction is supported. The inter-pack shields 35 extend in the up-down direction (vertical direction), and are arranged in plural with a predetermined interval in the left-right direction (exhaust gas flow direction). The area covered by the inter-packing cover 35 is a space that workers can enter during maintenance or replacement of parts.

在殼體31的內部，複數收容有熱交換捆包41。所謂熱交換捆包41，是作為流動有熱媒的傳熱管11、12之構成單位，組合傳熱管11、12來塊體化(單元化)而成的傳熱管群之結構體。各熱交換捆包41，是由使傳熱管11、12的複數個直線狀管部45彼此分開並排成塊體狀的傳熱管群來構成。殼體31內的熱交換捆包41，是從排氣的上游側往下游側複數列配置成直列狀，並在複數列的熱交換捆包41的各個中，使複數個直線狀管部45配置成與排氣的流通方向交叉。在本實施形態，排氣流通方向設定成大致水平方向(圖中的右方向)，直線狀管部45是以與排氣流通方向大致正交的方式於大致水平方向(圖中的前後方向)直線狀延伸。Inside the casing 31, a plurality of heat exchange packs 41 are accommodated. The heat exchange package 41 is a structure of a heat transfer tube group formed by combining the heat transfer tubes 11 and 12 as a constituent unit of the heat transfer tubes 11 and 12 in which the heat medium flows, and formed into blocks (units). Each heat exchange pack 41 is constituted by a heat transfer tube group in which a plurality of linear tube portions 45 of the heat transfer tubes 11 and 12 are separated from each other and arranged in a block shape. The heat exchange packs 41 in the casing 31 are arranged in a plurality of rows from the upstream side of the exhaust gas to the downstream side, and in each of the plurality of rows of the heat exchange packs 41, a plurality of linear pipe portions 45 are formed. It is arranged so as to intersect with the flow direction of the exhaust gas. In the present embodiment, the exhaust gas flow direction is set to a substantially horizontal direction (right direction in the figure), and the linear pipe portion 45 is set to a substantially horizontal direction (front-rear direction in the figure) so as to be substantially orthogonal to the exhaust gas flow direction. Linear extension.

各熱交換捆包41，具有第1頭部42與第2頭部43。第1及第2頭部42、43，形成有於上下方向延伸的柱狀。各頭部42、43，是形成為內部中空且上端及下端為封閉的形狀，於內部形成有可流動的空間。且，於各頭部42、43，支撐有往左右方向突出的安裝板44。Each heat exchange pack 41 has a first head 42 and a second head 43 . The first and second heads 42 and 43 are formed in columnar shapes extending in the vertical direction. Each of the heads 42 and 43 is formed in a shape in which the inside is hollow and the upper end and the lower end are closed, and a flowable space is formed inside. Moreover, the mounting plate 44 which protrudes in the left-right direction is supported by each head part 42 and 43. As shown in FIG.

於各頭部42、43的後面，支撐有往後方延伸的傳熱管11、12之直線狀管部45。傳熱管11、12，是在殼體31的內部中，在直線狀管部45的後端或前端彎曲而複數次往返於前後方向來構成。又，於各頭部42、43，在上下方向空出間隔來支撐有複數個傳熱管11、12。各傳熱管11、12的兩端，被支撐在頭部42、43，構成為可使熱媒從頭部42、43出入於各傳熱管11、12。On the rear surfaces of the respective heads 42 and 43 , the linear tube portions 45 of the heat transfer tubes 11 and 12 extending rearward are supported. The heat transfer tubes 11 and 12 are configured by being bent at the rear end or the front end of the linear tube portion 45 in the interior of the casing 31 and reciprocating in the front-rear direction a plurality of times. Moreover, the plurality of heat transfer tubes 11 and 12 are supported by the respective heads 42 and 43 at intervals in the up-down direction. Both ends of each of the heat transfer tubes 11 and 12 are supported by the heads 42 and 43 , and a heat medium can be passed in and out of the heat transfer tubes 11 and 12 from the heads 42 and 43 .

各傳熱管11、12的直線狀管部45，是在前後方向的中央部，被輔助構件47所支撐。輔助構件47是形成為：在板複數形成有供傳熱管11、12通過之孔而成的形狀。於是，傳熱管11、12並非只有被頭部42、43以單邊保持的狀態來支撐，而是被頭部42、43與輔助構件47給保持。又，雖圖示出於前後方向及左右方向設置一個輔助構件47的狀態，但亦可因應傳熱管11、12的長度，而在前後方向設置複數個輔助構件47，亦可在左右方向設置複數個輔助構件47。The linear tube portion 45 of each of the heat transfer tubes 11 and 12 is supported by an auxiliary member 47 at the center portion in the front-rear direction. The auxiliary member 47 is formed in a shape in which a plurality of holes through which the heat transfer tubes 11 and 12 pass are formed in the plate. Therefore, the heat transfer tubes 11 and 12 are not only supported by the heads 42 and 43 in a state of being held on one side, but are held by the heads 42 and 43 and the auxiliary member 47 . In addition, although the illustration shows a state where one auxiliary member 47 is provided in the front-rear direction and the left-right direction, according to the lengths of the heat transfer tubes 11 and 12, a plurality of auxiliary members 47 may be provided in the front-rear direction, or may be provided in the left-right direction. A plurality of auxiliary members 47 .

於各頭部42、43，在與傳熱管11、12對應的位置形成有塞孔48。塞孔48，是於前後方向貫通的孔，後端連接於傳熱管11、12的入口或出口。且，塞孔48的前端，在通常使用時是被栓(圖示省略)給塞住。在傳熱管11、12之任一者故障而使熱媒漏出的情況，拆下塞孔48的栓，通過塞孔48而將傳熱管11、12的入口或出口以封閉栓(圖示省略)來塞住，藉此可防止熱媒的漏出。Plug holes 48 are formed at positions corresponding to the heat transfer tubes 11 and 12 in the respective heads 42 and 43 . The plug hole 48 is a hole penetrating in the front-rear direction, and the rear end is connected to the inlet or outlet of the heat transfer tubes 11 and 12 . In addition, the front end of the plug hole 48 is plugged by a plug (not shown) during normal use. If any one of the heat transfer tubes 11 and 12 fails and the heat medium leaks out, the plug of the plug hole 48 is removed, and the inlet or outlet of the heat transfer tubes 11 and 12 is closed by the plug through the plug hole 48 (shown in the figure). omit) to plug, thereby preventing the leakage of the heat medium.

於各頭部42、43之間，可裝卸地支撐有殼板49。殼板49，具有與頭部42、43之上下方向之高度對應的高度。殼板49，是藉由螺栓(圖示省略)而可裝卸地支撐於安裝板44。又，將殼板49可裝卸地對安裝板44固定的方法，並不限定於螺栓。安裝殼板49藉此連接頭部42、43，使頭部42、43及傳熱管11、12以具有較高剛性的狀態來一體化，來抑制排氣從頭部42、43之間漏出的情況。A shell plate 49 is detachably supported between the heads 42 and 43 . The shell plate 49 has a height corresponding to the height of the heads 42 and 43 in the vertical direction. The case plate 49 is detachably supported on the mounting plate 44 by bolts (not shown). In addition, the method of attaching and detaching the cover plate 49 to the attachment plate 44 is not limited to a bolt. The mounting shell plate 49 connects the heads 42 and 43 so that the heads 42 and 43 and the heat transfer tubes 11 and 12 are integrated in a state of high rigidity, thereby suppressing the leakage of exhaust gas from between the heads 42 and 43 . Condition.

熱交換捆包41，是構成為可作為一個單元來收納於殼體31。在熱交換捆包41被收納在殼體31的狀態下，在以底板32、背面板33、頂板34、捆包間遮罩35、頭部42、43、殼板49所包圍的內部，構成有供排氣流動的氣體流通路。而且，在氣體流通路內配置有傳熱管11、12，構成為可與流動於氣體流通路的排氣之間進行熱交換。The heat exchange pack 41 is configured to be accommodated in the casing 31 as a unit. In a state where the heat exchange pack 41 is housed in the casing 31 , the interior is surrounded by the bottom plate 32 , the back plate 33 , the top plate 34 , the inter-pack cover 35 , the heads 42 , 43 , and the shell plate 49 . There are gas flow passages through which the exhaust gas flows. Furthermore, the heat transfer tubes 11 and 12 are arranged in the gas flow passage, and are configured to be able to exchange heat with the exhaust gas flowing in the gas flow passage.

在本實施形態的GGH熱回收器4及GGH再加熱器8的各個，沿著排氣的流通方向使熱交換捆包41並排2列，並在各列使熱交換捆包41於上下方向重疊成兩層，而設置有四個熱交換捆包41。上游側的兩層熱交換捆包41，各自構成上游側捆包(上游側熱交換捆包)41A，下游側的兩層熱交換捆包41，各自構成下游側捆包(下游側熱交換捆包)41B。在本實施形態，各列中，上層熱交換捆包41之頭部42、43的下端，是直接疊在下層熱交換捆包41的上端，以螺栓(圖示省略)來固定。又，在以下的說明，有將上游側之兩層的熱交換捆包41統稱為上游側捆包41A，將下游側之兩層的熱交換捆包41統稱為下游側捆包41B的情況。且，熱交換捆包41的列數為三列以上亦可，各列之熱交換捆包41的層數為一層(以單一的熱交換捆包41來構成一列)或三層以上亦可。In each of the GGH heat recovery device 4 and the GGH reheater 8 of the present embodiment, the heat exchange packs 41 are arranged in two rows along the flow direction of the exhaust gas, and the heat exchange packs 41 are overlapped in the vertical direction in each row. In two layers, four heat exchange bundles 41 are provided. The two layers of heat exchange packs 41 on the upstream side each constitute an upstream side pack (upstream side heat exchange pack) 41A, and the two layers of heat exchange packs 41 on the downstream side each constitute a downstream side pack (downstream side heat exchange packs) 41A. package) 41B. In this embodiment, in each row, the lower ends of the heads 42 and 43 of the upper heat exchange packs 41 are directly stacked on the upper ends of the lower heat exchange packs 41 and fixed with bolts (not shown). In the following description, the heat exchange packs 41 of the two layers on the upstream side are collectively referred to as the upstream side packs 41A, and the heat exchange packs 41 of the two layers on the downstream side are collectively referred to as the downstream side packs 41B. Furthermore, the number of rows of the heat exchange packs 41 may be three or more, and the number of layers of the heat exchange packs 41 in each row may be one layer (a single heat exchange pack 41 constitutes one row) or three or more layers.

如圖2所示般，GGH熱回收器4的上游側捆包41A與下游側捆包41B是藉由連接配管61來在各部連接，而構成為可使熱媒在上游側捆包41A與下游側捆包41B之間移動。且，本實施形態的GGH熱回收器4，是構成為使熱媒從下游側捆包41B往上游側捆包41A流動。在熱媒從上游側捆包41A往下游側捆包41B流動的情況，在上游側捆包41A處，熱媒與排氣的溫度差成為最大，在下游側捆包41B處，在上游側捆包41A加溫過的熱媒與在上游側捆包41A進行熱交換而冷卻過的排氣之間的溫度差變小，熱交換的效率降低，故在本實施形態，是構成為使熱媒從下游側捆包41B往上游側捆包41A流動。As shown in FIG. 2 , the upstream-side packing 41A and the downstream-side packing 41B of the GGH heat recovery device 4 are connected by connecting pipes 61 at each part, and are configured so that the heat medium can be packed at the upstream-side 41A and the downstream side. Move between side packs 41B. In addition, the GGH heat recovery device 4 of the present embodiment is configured so that the heat medium flows from the downstream-side packing 41B to the upstream-side packing 41A. When the heat medium flows from the upstream-side pack 41A to the downstream-side pack 41B, the temperature difference between the heat medium and the exhaust gas becomes the largest at the upstream-side pack 41A, and at the downstream-side pack 41B, the upstream-side pack The temperature difference between the heat medium heated by the pack 41A and the exhaust gas cooled by the heat exchange in the upstream pack 41A is reduced, and the efficiency of the heat exchange is lowered. Therefore, in this embodiment, the heat medium is configured such that It flows from the downstream-side bale 41B to the upstream-side bale 41A.

在本實施形態，是將GGH再加熱器8的上游側捆包41A，作為配管模式混合捆包來構成。配管模式混合捆包，是指與直線狀管部45大致正交的管正交剖面中，複數個直線狀管部45的配管模式成為上游側與下游側不同地構成的熱交換捆包41。在圖4所示之上游側捆包41A的例子，並排於氣體流通方向之十列的直線狀管部45之中，將上游側的兩列設為以交錯狀來配列的交錯配列管群(第1配列管群)51，將下游側的八列設為以正方格子狀來配列的正方配列管群(與第1配列管群不同配管模式的第2配列管群)52。在本實施形態，交錯配列管群51中鄰接之兩列的直線狀管部45的列間距離L1、夾著交錯配列管群51與正方配列管群52之間邊界而鄰接之兩列的直線狀管部45的列間距離L2、在正方配列管群52中鄰接之兩列的直線狀管部45的列間距離L3，是設定成大致相同距離(L1=L2=L3)。In the present embodiment, the upstream side packing 41A of the GGH reheater 8 is configured as a piping pattern mixed packing. The piping pattern mixed packing refers to the heat exchange package 41 in which the piping pattern of the plurality of linear pipe portions 45 is different from the upstream side and the downstream side in a pipe orthogonal cross section substantially orthogonal to the linear pipe portion 45 . In the example of the upstream pack 41A shown in FIG. 4 , among the linear tube portions 45 arranged in ten rows in the gas flow direction, the two upstream rows are staggered tube groups ( The first arrangement pipe group) 51 is a square arrangement pipe group (a second arrangement pipe group having a different piping pattern from the first arrangement pipe group) 52 arranged in a square lattice shape in the eight rows on the downstream side. In the present embodiment, the distance L1 between the two adjacent rows of the linear tube portions 45 in the staggered tube group 51 and the straight line between the two adjacent rows sandwiching the boundary between the staggered tube group 51 and the square tube group 52 The inter-column distance L2 of the tubular portion 45 and the inter-column distance L3 of the two adjacent linear tubular portions 45 in the square-arranged tube group 52 are set to substantially the same distance (L1=L2=L3).

本實施形態之GGH再加熱器8的下游側捆包41B，是作為配管模式非混合捆包(配管模式單一捆包)來構成。配管模式非混合捆包，是指從上游側遍及至下游側的全域(全列)，設定成相同配管模式(在本實施形態為正方配列)的傳熱管捆包41。本實施形態之GGH熱回收器4的上游側捆包41A及下游側捆包41B，均與GGH再加熱器8的下游側捆包41B同樣地，為從上游側遍及至下游側的全域(全列)，以相同配管模式(在本實施形態為正方配列)來構成的配管模式非混合捆包。The downstream bundle 41B of the GGH reheater 8 of the present embodiment is configured as a piping mode non-mixed bundle (a piping mode single bundle). The piping pattern non-mixed packing refers to the heat transfer tube packing 41 in which the same piping pattern (square arrangement in this embodiment) is set over the entire area (all rows) from the upstream side to the downstream side. The upstream-side package 41A and the downstream-side package 41B of the GGH heat recovery device 4 of the present embodiment are the same as the downstream-side package 41B of the GGH reheater 8 , and are the entire area from the upstream side to the downstream side (all the row), and a piping pattern non-mixed package constructed in the same piping pattern (square arrangement in this embodiment).

在正方配列，排氣雖會與複數列之中最上游列的直線狀配管45接觸，但在其下游側，第二列以後的直線狀配管45，是對於排氣的流動方向被最上游列的直線狀配管45給擋住，故與排氣的接觸會減少，由於接觸降低，使得排氣容易流動。另一方面，在交錯配列，第2列以後(在本實施形態為第2列)的直線狀配管45，難以被前列(在本實施形態為第1列)的直線狀配管45擋住，與排氣的接觸會增加，但相對地會成為排氣的阻抗。且，由於對排氣成為阻抗，排氣會被整流。In the square arrangement, the exhaust gas comes into contact with the linear piping 45 in the most upstream row among the plurality of rows, but on the downstream side, the linear piping 45 in the second and subsequent rows is the most upstream row with respect to the flow direction of the exhaust gas. Since the straight piping 45 is blocked, the contact with the exhaust gas will be reduced, and the exhaust gas will flow easily due to the reduced contact. On the other hand, in the staggered row, the linear pipes 45 in the second row and later (the second row in this embodiment) are difficult to be blocked by the linear pipes 45 in the front row (the first row in the present embodiment), and the linear pipes 45 in the row The contact of the gas will increase, but it will relatively become the resistance of the exhaust gas. In addition, the exhaust gas is rectified because it acts as a resistance to the exhaust gas.

在本實施形態的GGH再加熱器8，從GGH熱回收器4流出的熱媒，是流通於連絡配管13A而往交錯配列管群51的熱媒入口流入。交錯配列管群51的熱媒出口與下游側捆包41B之傳熱管群的熱媒入口，是以流通於交錯配列管群51的熱媒流通於下游側捆包41B之傳熱管群的方式，被第1連接管62給連接。下游側捆包41B之傳熱管群的熱媒出口與正方配列管群52的熱媒入口，是以流通於下游側捆包41B之傳熱管群的熱媒流通於正方配列管群52的方式，被第2連接管63給連接。在正方配列管群52的熱媒入口流入有來自下游側捆包41B的熱媒。流通於正方配列管群52且從正方配列管群52的熱媒出口流出的熱媒，是流通於連絡配管13B而回到GGH熱回收器4。In the GGH reheater 8 of the present embodiment, the heat medium flowing out of the GGH heat recovery device 4 flows through the communication pipe 13A and flows into the heat medium inlet of the staggered arrangement of the pipe group 51 . The heat medium outlet of the staggered tube group 51 and the heat medium inlet of the heat transfer tube group of the downstream side package 41B are so that the heat medium flowing through the staggered tube group 51 flows through the heat transfer tube group of the downstream side package 41B. In this way, it is connected by the first connecting pipe 62 . The heat medium outlet of the heat transfer tube group of the downstream side package 41B and the heat medium inlet of the squarely arranged tube group 52 are circulated through the squarely arranged tube group 52 so that the heat medium flowing through the heat transfer tube group of the downstream side package 41B is circulated. In this way, it is connected by the second connecting pipe 63 . The heat medium from the downstream side package 41B flows into the heat medium inlet of the square-arranged tube group 52 . The heat medium flowing through the square-arranged tube group 52 and flowing out from the heat-medium outlet of the square-arrangement pipe group 52 flows through the communication pipe 13B and returns to the GGH heat recovery device 4 .

如上述般，交錯配列管群51、正方配列管群52及下游側捆包41B(構成下游側捆包41B的傳熱管群)，是作為高溫預熱部、低溫部及高溫部來各自發揮功能，所導入的排氣，會依序通過交錯配列的高溫預熱部、正方配列的低溫部及高溫部而升溫。使熱媒最初先導入至上游的交錯配列管群51，藉此熱媒在交錯配列管群51是以最熱的狀態流動，來自濕式排煙脫硫裝置7的霧氣容易迅速蒸發。且，使熱媒從下游的下游側捆包41B往中游的正方配列管群52流動，藉此使熱媒的溫度，變成下游比中游還高。若熱媒的溫度是下游比中游還低的情況，以高溫的中游來加溫排氣之後，通過低溫的下游，而使得排氣難以在下游變暖，熱交換的效率較低。對此，如本實施形態般，熱媒的溫度是下游比中游還高的情況，排氣是從低溫的中游到高溫的下游之順序被加溫，故提高熱交換的效率。As described above, the staggered tube group 51 , the square tube group 52 , and the downstream package 41B (the heat transfer tube group constituting the downstream package 41B) function as a high-temperature preheating portion, a low-temperature portion, and a high-temperature portion, respectively. Function, the introduced exhaust gas will sequentially pass through the high temperature preheating part arranged in a staggered arrangement, the low temperature part and the high temperature part arranged in a square arrangement to heat up. The heat medium is first introduced to the upstream staggered tube group 51, whereby the heat medium flows in the hottest state in the staggered tube group 51, and the mist from the wet flue gas desulfurization device 7 is easily evaporated quickly. Then, the temperature of the heat medium is made higher in the downstream than in the middle by flowing the heat medium from the downstream package 41B to the squarely arranged tube group 52 in the middle. If the temperature of the heat medium is lower in the downstream than in the midstream, after heating the exhaust gas in the high-temperature midstream, it passes through the low-temperature downstream, making it difficult for the exhaust gas to be warmed downstream, and the heat exchange efficiency is low. On the other hand, as in the present embodiment, when the temperature of the heat medium is higher in the downstream than in the midstream, the exhaust gas is heated in order from the low-temperature midstream to the high-temperature downstream, thereby improving the heat exchange efficiency.

本實施形態的GGH熱回收器4，在上游側捆包41A與下游側捆包41B之雙方，是以多數設置有折疊狀之翅片的翅片管規格之翅片管部來構成傳熱管11的直線狀管部45。以翅片管部來構成，藉此與以沒有設置翅片的裸管規格之裸管部來構成的情況相較之下，與排氣的接觸面積較大，提升熱交換的效率。In the GGH heat recovery device 4 of the present embodiment, the heat transfer tubes are constituted by the finned tube portion of the finned tube specification in which a large number of folded fins are provided on both the upstream side pack 41A and the downstream side pack 41B. 11 of the linear tube portion 45. Compared with the case where the finned tube part is formed, the contact area with the exhaust gas is larger, and the heat exchange efficiency is improved compared with the case where the bare tube part is formed without fins.

本實施形態的GGH再加熱器8，是以裸管部來構成交錯配列管群51的直線狀管部45，以翅片管部來構成正方配列管群52的直線狀管部45與下游捆包41B的直線狀管部45。若以翅片管部來構成交錯配列管群51的直線狀管部45的話，來自濕式排煙脫硫裝置7的霧氣會附著而容易腐蝕，在本實施形態，是以裸管部來構成交錯配列管群51的直線狀管部45，故比起以翅片管部來構成的情況較難腐蝕。In the GGH reheater 8 of the present embodiment, the straight tube portion 45 of the staggered arrangement tube group 51 is constituted by the bare tube portion, and the linear tube portion 45 of the square arrangement tube group 52 is constituted by the finned tube portion and the downstream bundle The linear tube portion 45 of the bag 41B. If the linear tube portion 45 of the staggered tube group 51 is constituted by the finned tube portion, the mist from the wet flue gas desulfurization device 7 will adhere and be easily corroded. In this embodiment, the bare tube portion is constituted. Since the linear tube portions 45 of the tube group 51 are arranged in a staggered manner, corrosion is more difficult than in the case where the tubes are formed by finned tube portions.

GGH熱回收器4，是藉由正方配列，來降低灰磨損(以排氣中的煤灰來摩擦、削磨擦傳熱管表面的現象)。又，GGH熱回收器4，是以翅片管部來構成，藉此確保與排氣的接觸。且，GGH再加熱器8的交錯配列管群51，使來自濕式排煙脫硫裝置7的霧氣容易流入，設為交錯配列藉此提高與霧氣的接觸機率而容易去除霧氣。The GGH heat recovery device 4 is arranged in a square shape to reduce ash wear (a phenomenon in which the surface of the heat transfer tube is rubbed and rubbed by the coal ash in the exhaust gas). In addition, the GGH heat recovery device 4 is constituted by a finned tube portion, thereby ensuring the contact with the exhaust gas. In addition, the staggered arrangement of the tube groups 51 of the GGH reheater 8 allows the mist from the wet flue gas desulfurization device 7 to flow easily, and the staggered arrangement increases the probability of contact with the mist and facilitates the removal of the mist.

此外，為了緩和GGH再加熱器8之翅片管部的腐食環境來進行穩定的運用，翅片管部之上游側亦即交錯配列管群51的霧氣去除效率為60％以上為佳，為此，是以在交錯配列管群51的直線狀管部(本實施形態為裸管部)45之間流動之氣體的流速成為8m/s~16m/s之範圍的方式，來配置交錯配列管群51的直線狀管部(裸管部)45為佳。In addition, in order to alleviate the scavenging environment of the finned tube portion of the GGH reheater 8 for stable operation, it is preferable that the mist removal efficiency of the staggered tube group 51 upstream of the finned tube portion is 60% or more. , the staggered array tube group is arranged so that the flow velocity of the gas flowing between the linear tube portions (in this embodiment, the bare tube portion) 45 of the staggered array tube group 51 is in the range of 8 m/s to 16 m/s The linear pipe portion (bare pipe portion) 45 of 51 is preferable.

且，將GGH再加熱器8之翅片管部(正方配列管群52及下游捆包41B之中至少任一方的翅片管部)的翅片間距設為5.0mm~10.0mm，藉此消除翅片管部隨時間堵塞灰塵的問題，可更穩定地運用。Furthermore, the fin pitch of the finned tube portion of the GGH reheater 8 (the finned tube portion of at least one of the square arrangement tube group 52 and the downstream package 41B) is set to 5.0 mm to 10.0 mm, thereby eliminating the need for The finned tube part can be used more stably because of the problem of dust clogging over time.

如以上說明般，根據本實施形態，GGH再加熱器8中，是在一個熱交換捆包41(上游側捆包41A)內設置配管模式彼此不同的第1配列管群(交錯配列管群)51與第2配列管群(正方配列管群)52，故可抑制沿著排氣之流通方向的熱交換捆包41之列數的增加，並將所期望的傳熱管配列模式構成於氣體流通路。As described above, according to the present embodiment, in the GGH reheater 8, the first arrangement pipe group (cross arrangement arrangement pipe group) having different piping patterns from each other is provided in one heat exchange package 41 (upstream side package 41A). 51 and the second arrangement tube group (square arrangement tube group) 52, it is possible to suppress an increase in the number of rows of the heat exchange packs 41 along the flow direction of the exhaust gas, and to configure a desired heat transfer tube arrangement pattern in the gas flow path.

且，交錯配列管群51、正方配列管群52及下游側捆包41B(構成下游側捆包41B的傳熱管群)，是作為高溫預熱部、低溫部及高溫部來各自發揮功能，所導入的排氣，會依序通過交錯配列的高溫預熱部、正方配列的低溫部及高溫部而升溫，故可提高GGH再加熱器8的熱交換效率。且，可提高從濕式排煙脫硫裝置7飛散的霧氣與交錯配列管群51的直線狀管部45衝突的效率(高溫預熱部的霧氣蒸發效率)，抑制霧氣對低溫部及高溫部之傳熱管12的附著，可抑制長年使用所致之壓損的上升。In addition, the staggered tube group 51, the square tube group 52, and the downstream package 41B (the heat transfer tube group constituting the downstream package 41B) function as a high-temperature preheating section, a low-temperature section, and a high-temperature section, respectively. The introduced exhaust gas passes through the high-temperature preheating section arranged in a staggered manner, the low-temperature section and the high-temperature section arranged in a square arrangement to be heated in sequence, so that the heat exchange efficiency of the GGH reheater 8 can be improved. In addition, the efficiency of collision between the mist scattered from the wet flue gas desulfurization device 7 and the linear pipe portion 45 of the staggered arrangement of tubes 51 (the mist evaporation efficiency of the high temperature preheating portion) can be improved, and the effect of mist on the low temperature portion and the high temperature portion can be suppressed. The adhesion of the heat transfer tube 12 can suppress the increase in pressure loss due to long-term use.

且，交錯配列管群51的直線狀管部45是以裸管部來構成，故可抑制霧氣對高溫預熱部之傳熱管12的附著，而抑制長年使用所致之壓損的上升。此外，以翅片管部來構成正方配列管群52的直線狀管部45與下游側捆包41B的直線狀管部45，故可提高低溫部及高溫部之熱交換的效率。Furthermore, since the linear tube portion 45 of the staggered tube group 51 is constituted by a bare tube portion, the adhesion of the mist to the heat transfer tube 12 of the high temperature preheating portion can be suppressed, and the increase in pressure loss due to long-term use can be suppressed. In addition, since the linear pipe portion 45 of the square-arranged pipe group 52 and the linear pipe portion 45 of the downstream bundle 41B are constituted by the finned pipe portion, the efficiency of heat exchange between the low temperature portion and the high temperature portion can be improved.

且，藉由在交錯配列管群51之直線狀管部(本實施形態為裸管部)45流動之氣體流速的最佳化或翅片管部之翅片間距的最佳化，而防止翅片管部的腐蝕或防止灰塵等所致的堵塞，可穩定地運用。Furthermore, by optimizing the flow velocity of the gas flowing in the linear tube portion (the bare tube portion in this embodiment) 45 of the staggered tube group 51 or by optimizing the fin pitch of the finned tube portion, the fins are prevented from being finned. Corrosion of the sheet tube and prevention of clogging due to dust, etc., can be used stably.

又，本發明，並不限定於作為一例來說明之上述的實施形態及變形例，除了上述的實施形態等以外，只要在不超脫本發明之技術性思維之範圍的話，可因應設計等來進行各種變更。In addition, the present invention is not limited to the above-described embodiment and modified examples described as an example, and other than the above-described embodiment, etc., as long as it does not deviate from the scope of the technical thinking of the present invention, it can be carried out according to designs and the like. Various changes.

例如圖5所示般，是將本發明適用於將GGH熱回收器4與GGH再加熱器8給分割成複數系統(圖5之例為兩系統)的排煙處理系統S，使複數個GGH熱回收器4的至少一個或複數個GGH再加熱器8的至少一個如上述實施形態般構成亦可。For example, as shown in FIG. 5 , the present invention is applied to the exhaust gas treatment system S in which the GGH heat recovery device 4 and the GGH reheater 8 are divided into a plurality of systems (two systems in the example of FIG. 5 ), and a plurality of GGH At least one of the heat recovery device 4 or at least one of the plurality of GGH reheaters 8 may be configured as in the above-described embodiment.

且，在上述實施形態，雖將排氣流通方向設定成大致水平方向，將直線狀管部45延伸的方向(延伸設置方向)設定成與排氣流通方向大致正交的大致水平方向，但排氣流通方向及直線狀管部45的延伸設置方向並不限定於上述，設定成其他方向(將排氣流通方向設定成大致水平方向，將直線狀管部45的延伸設置方向設定成上下方向(大致鉛直方向))亦可。Furthermore, in the above-described embodiment, the exhaust gas flow direction is set to be substantially horizontal, and the extending direction (extending direction) of the linear pipe portion 45 is set to be a substantially horizontal direction substantially orthogonal to the exhaust gas flow direction. The airflow direction and the extending direction of the linear pipe portion 45 are not limited to the above, and are set to other directions (the exhaust gas flow direction is set to a substantially horizontal direction, and the extending direction of the linear pipe portion 45 is set to the vertical direction ( Roughly vertical direction)) is also possible.

1:鍋爐 3:空氣預熱器(A/H) 4:GGH熱回收器(氣體對氣體的熱交換器) 5:集塵裝置(EP) 6:風扇 7:濕式排煙脫硫裝置 8:GGH再加熱器(氣體對氣體的熱交換器) 9:煙囪 11,12:傳熱管 13,13A,13B:連絡配管 31:殼體 41:熱交換捆包 41A:上游側捆包(上游側熱交換捆包、配管模式混合捆包) 41B:下游側捆包(下游側熱交換捆包) 42:第1頭部 43:第2頭部 45:直線狀管部 49:殼板 51:交錯配列管群(第1配列管群) 52:正方配列管群(第2配列管群) 61:連接配管 S:排煙處理系統1: Boiler 3: Air Preheater (A/H) 4: GGH heat recovery device (gas-to-gas heat exchanger) 5: Dust collector (EP) 6: Fan 7: Wet flue gas desulfurization device 8: GGH reheater (gas-to-gas heat exchanger) 9: Chimney 11,12: Heat transfer tubes 13, 13A, 13B: Connection piping 31: Shell 41: Hot Swap Bundles 41A: Upstream side packing (upstream side heat exchange packing, piping mode mixed packing) 41B: Downstream side bale (downstream side heat exchange bale) 42: 1st head 43: 2nd head 45: Linear tube part 49: Shell plate 51: Staggered arrangement tube group (1st arrangement tube group) 52: Square distribution tube group (2nd distribution tube group) 61: Connecting piping S: smoke exhaust treatment system

[圖1]將具備本發明之一實施形態之氣體對氣體的熱交換器的排氣處理系統之構造例予以示意表示的圖。 [圖2]將圖1之排氣處理系統之熱媒的流動予以示意表示的圖。 [圖3]將圖1之GGH再加熱器的概略構造予以示意表示的立體圖。 [圖4]表示圖3之配管模式混合捆包之直線狀管部之配管模式的剖面圖。 [圖5]將使GGH熱回收器與GGH再加熱器分割成兩系統的排煙處理系統之構造例予以示意表示的圖。1 is a diagram schematically showing a structural example of an exhaust gas treatment system including a gas-to-gas heat exchanger according to an embodiment of the present invention. [ Fig. 2] Fig. 2 is a diagram schematically showing the flow of the heat medium in the exhaust gas treatment system of Fig. 1 . [ Fig. 3] Fig. 3 is a perspective view schematically showing the schematic structure of the GGH reheater of Fig. 1 . [ Fig. 4] Fig. 4 is a cross-sectional view showing a piping pattern of the linear pipe portion of the piping pattern mixed pack of Fig. 3 . [ Fig. 5] Fig. 5 is a diagram schematically showing a configuration example of an exhaust gas treatment system in which a GGH heat recovery device and a GGH reheater are divided into two systems.

12:傳熱管 12: Heat transfer tube

41:熱交換捆包 41: Hot Swap Bundles

41A:上游側捆包(上游側熱交換捆包、配管模式混合捆包) 41A: Upstream side packing (upstream side heat exchange packing, piping mode mixed packing)

45:直線狀管部 45: Linear tube part

51:交錯配列管群(第1配列管群) 51: Staggered arrangement tube group (1st arrangement tube group)

52:正方配列管群(第2配列管群) 52: Square distribution tube group (2nd distribution tube group)

Claims (6)

一種氣體對氣體的熱交換器，其將熱交換捆包從來自鍋爐之排氣的上游側往下游側複數配置成直列狀，在前述複數個熱交換捆包的各者，將複數個直線狀管部配置成與排氣的流通方向交叉，前述熱交換捆包是藉由使傳熱管的前述複數個直線狀管部彼此分開並排成塊體狀的傳熱管群來構成，其特徵為，前述複數個熱交換捆包，含有使第1配列管群與第2配列管群設在同一捆包內來形成前述傳熱管群的配管模式混合捆包，該第1配列管群是使與前述直線狀管部大致正交之管正交剖面的前述複數個直線狀管部的配管模式成為第1配列，該第2配列管群是使前述複數個直線狀管部的配管模式成為與前述第1配列不同的第2配列，前述第1配列管群與前述第2配列管群，是在排氣的流通方向排列成直列狀，前述第1配列管群的熱媒出口與前述第2配列管群的熱媒入口，是透過熱媒流通經路而連通，流通於前述第1配列管群而從前述熱媒出口流出的熱媒，是從前述熱媒流通經路流入至前述熱媒入口而流通於前述第2配列管群。 A gas-to-gas heat exchanger in which a plurality of heat exchange packs are arranged in a line from an upstream side to a downstream side of exhaust gas from a boiler, and a plurality of linear heat exchange packs are arranged in each of the plurality of heat exchange packs. The pipe portion is arranged so as to intersect the flow direction of the exhaust gas, and the heat exchange package is constituted by a heat transfer pipe group in which the plurality of linear pipe portions of the heat transfer pipe are separated from each other and arranged in a block shape. The plurality of heat exchange packages include a piping pattern mixed package in which the first arrangement tube group and the second arrangement tube group are arranged in the same package to form the heat transfer tube group, and the first arrangement tube group is The piping pattern of the plurality of linear pipe portions having a pipe orthogonal cross-section substantially perpendicular to the linear pipe portion is a first arrangement, and the second arrangement pipe group is a piping pattern of the plurality of linear pipe portions being arranged as In the second arrangement, which is different from the first arrangement, the first arrangement tube group and the second arrangement tube group are arranged in a line in the flow direction of the exhaust gas, and the heat medium outlet of the first arrangement tube group is connected to the first arrangement tube group. The heat medium inlets of the 2-arranged tube groups are communicated through the heat-medium flow path, and the heat medium that flows through the first-arranged pipe group and flows out from the heat-medium outlet flows into the heat medium from the heat-medium flow path. It flows through the said second arrangement pipe group through the medium inlet. 一種氣體對氣體的熱交換器，是在從排氣進行熱回收的熱回收器之下游側，且在藉由氣液接觸來去除排氣中之硫磺氧化物的脫硫裝置之下游側，作為再加熱器來配置，該氣體對氣體的熱交換器，其將熱交換捆包 從排氣的上游側往下游側複數配置成直列狀，在前述複數個熱交換捆包的各者，將複數個直線狀管部配置成與排氣的流通方向交叉，前述熱交換捆包是藉由使傳熱管的前述複數個直線狀管部彼此分開並排成塊體狀的傳熱管群來構成，其特徵為，前述複數個熱交換捆包，含有配管模式混合捆包、配置在前述配管模式混合捆包之下游側的下游側熱交換捆包，在前述配管模式混合捆包，使第1配列管群與第2配列管群設在同一捆包內來形成前述傳熱管群，該第1配列管群是使與前述直線狀管部大致正交之管正交剖面的前述複數個直線狀管部的配管模式成為第1配列，該第2配列管群是使設在前述第1配列管群之下游側的前述複數個直線狀管部的配管模式成為與前述第1配列不同的第2配列，前述第1配列管群，是使前述複數個直線狀管部配列成交錯狀的交錯配列管群，前述第2配列管群，是使前述複數個直線狀管部配列成正方格子狀的正方配列管群，在前述交錯配列管群，從前述熱回收器流入有熱媒，前述交錯配列管群與前述下游側熱交換捆包的前述傳熱管群，是以流通於前述交錯配列管群的熱媒流通於前述下游側熱交換捆包之前述傳熱管群的方式，被第1連接管給連接，前述下游側熱交換捆包的前述傳熱管群與前述正方配 列管群，是以流通於前述下游側熱交換捆包之前述傳熱管群的熱媒流通於前述正方配列管群的方式，被第2連接管給連接。 A gas-to-gas heat exchanger on the downstream side of a heat recovery device that recovers heat from exhaust gas and downstream of a desulfurization device that removes sulfur oxides in exhaust gas by gas-liquid contact, as Reheater to configure, the gas-to-gas heat exchanger, which will heat exchange bundles From the upstream side of the exhaust gas to the downstream side, a plurality of linear pipe portions are arranged in a line shape, and in each of the plurality of heat exchange packs, a plurality of linear pipe portions are arranged so as to intersect the flow direction of the exhaust gas, and the heat exchange packs are It is constituted by a heat transfer tube group in which the plurality of linear tube portions of the heat transfer tube are separated from each other and arranged in a block shape, and characterized in that the plurality of heat exchange packs include a piping pattern mixed pack, arrangement The heat transfer tube is formed by arranging the first arrangement tube group and the second arrangement tube group in the same package in the downstream side heat exchange packing on the downstream side of the piping pattern mixed packing. The first arrangement pipe group is a first arrangement in which the piping pattern of the plurality of linear pipe portions having a pipe orthogonal cross-section substantially orthogonal to the linear pipe portion is arranged in the second arrangement pipe group. The piping pattern of the plurality of linear pipe portions on the downstream side of the first arrangement pipe group is a second arrangement different from the first arrangement, and the first arrangement pipe group is formed by arranging the plurality of linear pipe portions. The staggered staggered arrangement tube group, the second arrangement tube group is a square arrangement tube group in which the plurality of linear tube portions are arranged in a square lattice shape, and in the staggered arrangement tube group, heat flows from the heat recovery device. The staggered arrangement of the tube group and the heat transfer tube group of the downstream heat exchange package is such that the heat medium flowing through the staggered arrangement of the tube group flows through the heat transfer tube group of the downstream heat exchange package. is connected by a first connecting pipe, and the heat transfer tube group of the downstream heat exchange package is arranged with the square The tube group is connected by the second connecting pipe so that the heat medium flowing through the heat transfer tube group of the downstream heat exchange package flows through the square tube group. 如請求項2所述之氣體對氣體的熱交換器，其中，前述交錯配列管群的前述直線狀管部，是以裸管規格的裸管部來構成，前述正方配列管群的前述直線狀管部與前述下游側熱交換捆包的前述直線狀管部，是以翅片管規格的翅片管部來構成。 The gas-to-gas heat exchanger according to claim 2, wherein the linear tube portion of the staggered tube group is constituted by a bare tube portion of a bare tube specification, and the linear tube portion of the square tube group is arranged in a straight line. The tube portion and the linear tube portion of the downstream heat exchange pack are constituted by a finned tube portion of a finned tube specification. 如請求項3所述之氣體對氣體的熱交換器，其中，將前述正方配列管群之前述直線狀管部之前述翅片管部的翅片間距設為5.0mm~10.0mm。 The gas-to-gas heat exchanger according to claim 3, wherein the fin pitch of the finned tube portion of the linear tube portion of the square-arranged tube group is set to 5.0 mm to 10.0 mm. 如請求項3或請求項4所述之氣體對氣體的熱交換器，其中，將前述下游側熱交換捆包之前述直線狀管部之前述翅片管部的翅片間距設為5.0mm~10.0mm。 The gas-to-gas heat exchanger according to claim 3 or claim 4, wherein the fin pitch of the finned tube portion of the linear tube portion of the downstream heat exchange bundle is set to 5.0 mm to 5.0 mm. 10.0mm. 如請求項2至請求項4中任一項所述之氣體對氣體的熱交換器，其中，將前述交錯配列管群配置成使流動於前述交錯配列管群之前述直線狀管部之間之排氣的流速成為8m/s~16m/s。 The gas-to-gas heat exchanger according to any one of Claims 2 to 4, wherein the staggered arrangement of tubes is arranged such that flow between the linear tube portions of the staggered arrangement of tubes The flow velocity of the exhaust gas is 8 m/s to 16 m/s.
TW109137797A 2019-10-31 2020-10-30 gas to gas heat exchanger TWI757942B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-199402 2019-10-31
JP2019199402A JP7334105B2 (en) 2019-10-31 2019-10-31 gas gas heat exchanger

Publications (2)

Publication Number Publication Date
TW202124898A TW202124898A (en) 2021-07-01
TWI757942B true TWI757942B (en) 2022-03-11

Family

ID=75712828

Family Applications (1)

Application Number Title Priority Date Filing Date
TW109137797A TWI757942B (en) 2019-10-31 2020-10-30 gas to gas heat exchanger

Country Status (5)

Country Link
JP (1) JP7334105B2 (en)
KR (1) KR20220061236A (en)
CN (1) CN114599928A (en)
TW (1) TWI757942B (en)
WO (1) WO2021085513A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230038760A (en) * 2021-02-01 2023-03-21 미츠비시 파워 가부시키가이샤 Heat exchangers and flue gas treatment systems

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079140A2 (en) * 2005-12-28 2007-07-12 Wabtec Holding Corp. Multi-fluid heat exchanger arrangement
WO2018139669A1 (en) * 2017-01-30 2018-08-02 三菱日立パワーシステムズ株式会社 Gas-to-gas heat exchanger

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001065801A (en) * 1999-08-24 2001-03-16 Hitachi Ltd Heat exchanger and boiler
AU2003280632A1 (en) * 2002-11-05 2004-06-07 Babcock-Hitachi Kabushiki Kaisha Exhaust gas treating apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007079140A2 (en) * 2005-12-28 2007-07-12 Wabtec Holding Corp. Multi-fluid heat exchanger arrangement
WO2018139669A1 (en) * 2017-01-30 2018-08-02 三菱日立パワーシステムズ株式会社 Gas-to-gas heat exchanger

Also Published As

Publication number Publication date
WO2021085513A1 (en) 2021-05-06
CN114599928A (en) 2022-06-07
TW202124898A (en) 2021-07-01
KR20220061236A (en) 2022-05-12
JP2021071263A (en) 2021-05-06
JP7334105B2 (en) 2023-08-28

Similar Documents

Publication Publication Date Title
US9400102B2 (en) Heat exchanger including flow regulating plates
JP7506217B2 (en) All secondary air-cooled industrial steam condensers
EP2229572B1 (en) Recuperator
US20080209899A1 (en) Exhaust gas treating method
TWI757942B (en) gas to gas heat exchanger
JP6718525B2 (en) Gas gas heat exchanger
JP5780520B2 (en) Waste heat recovery boiler
CN112005073B (en) Heat exchanger
JP6939265B2 (en) Heat recovery device
JP7220992B2 (en) Heat transfer tube support structure and heat transfer tube support method
JP3852820B2 (en) Smoke removal equipment
JP4570187B2 (en) Exhaust gas heat exchanger
US7275589B2 (en) Anti-vibration bars for boiler tubes with protective shields
JP7221439B1 (en) Bundle, heat exchanger, flue gas treatment device, and method for manufacturing bundle
JPS59153095A (en) Heat exchanger
CA2508382C (en) Anti-vibration bars for boiler tubes with protective shields
KR20240079685A (en) Heat pipe unit and waste heat recovery boiler including same
JPH10122761A (en) System and method for heat recovery of exhaust gas
JP2022117579A (en) Heat exchanger and flue gas treatment system
JP6109716B2 (en) Finned tube heat exchanger
JP6109715B2 (en) Finned tube heat exchanger
JPS59150289A (en) Heat exchanging apparatus
JPH0630601U (en) Natural circulation type water pipe boiler equipment