CN102032587B - Plate type air preheater with glass as heat exchange plate - Google Patents

Plate type air preheater with glass as heat exchange plate Download PDF

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Publication number
CN102032587B
CN102032587B CN2010105957783A CN201010595778A CN102032587B CN 102032587 B CN102032587 B CN 102032587B CN 2010105957783 A CN2010105957783 A CN 2010105957783A CN 201010595778 A CN201010595778 A CN 201010595778A CN 102032587 B CN102032587 B CN 102032587B
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CN
China
Prior art keywords
heat exchange
plate
glass
air preheater
exchange plate
Prior art date
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Active
Application number
CN2010105957783A
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Chinese (zh)
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CN102032587A (en
Inventor
程高锋
周云博
杨福高
田春来
刘小强
唐聚园
徐龙
江俊锋
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Luoyang Ruichang Environmental Engineering Co ltd
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Luoyang Ruichang Petro Chemical Equipment Co Ltd
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Priority to CN2010105957783A priority Critical patent/CN102032587B/en
Publication of CN102032587A publication Critical patent/CN102032587A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/006Constructions of heat-exchange apparatus characterised by the selection of particular materials of glass
    • 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
    • F28D21/0001Recuperative heat exchangers
    • F28D21/0003Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/001Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes
    • 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
    • F28D9/00Heat-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
    • F28D9/0062Heat-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 the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • 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
    • F28D9/00Heat-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
    • F28D9/02Heat-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 the heat-exchange media travelling at an angle to one another
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/10Arrangements for sealing the margins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/66Preheating the combustion air or gas
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING 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
    • F23L15/00Heating of air supplied for combustion
    • F23L15/04Arrangements of recuperators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10Particular pattern of flow of the heat exchange media
    • F28F2250/106Particular pattern of flow of the heat exchange media with cross flow
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00Fastening; Joining
    • F28F2275/20Fastening; Joining with threaded elements
    • F28F2275/205Fastening; Joining with threaded elements with of tie-rods
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention provides a plate type air preheater with glasses as heat exchange plates, belonging to the technical field of heat exchangers. The plate type air preheater comprises an air preheater frame, the air preheater frame comprises an upper cover plate (10), a lower bottom plate (11) and a stand column (5) and is internally provided with a plurality of heat exchange plates (1) which are correspondingly placed in vertical direction; a sealing strip (4) is arranged between every two heat exchange plates (1) which are adjacent in vertical direction; the sealing strips (4) are mutually staggered at 90 degrees and form a plurality of sealing fluid channels which are adjacent and mutually staggered at 90 degrees by being placed in a staggered way so as to respectively form hot fluid channels and cold fluid channels; rectangular glass plates are adopted as the heat exchange plates (1), and the glass can be silicon-boron glass and boron-free low-alkali glass or quartz glass; and supporting strips (2) which are rectangular or S-shaped nonmetal plate bars are arranged among the fluid channels formed by the upper and lower heat exchange plates (1). The invention has dew point corrosion resistance, efficiently recovers the low-temperature exhaust heat of smoke and can reduce the temperature of discharged smoke and enhance the efficiency of a heating furnace.

Description

A kind of heat exchange plate is the plate air preheater of glass
Technical field
The invention belongs to technical field of heat exchangers, disclose the plate air preheater that a kind of heat exchange plate is a glass.
Background technology
Heating furnace and Industrial Boiler are the main energy consumption equipments of electric power, petrochemical industry process units, and its power consumption accounts for 50~70% of overall apparatus power consumption, in energy today in short supply day by day, improve urgent especially that heater efficiency shows undoubtedly.Wherein improve one of major measure of boiler, the industrial furnace thermal efficiency, reduce exhaust gas temperature exactly, reclaim the waste heat in the flue gas.Reduce exhaust gas temperature, the waste heat that reclaims in the flue gas is that heating furnace, industrial furnace are raised the efficiency most important technical measures.Yet up to the present, the biggest obstacle of recovery low-temperature flue gas is from SO in the flue gas 2And SO 3Dew point corrosion; Can produce dilute sulfuric acid when temperature drops to acid dew point when following, the heat exchanger that existing steel grade (comprising stainless steel) is made can damage at short notice, and noble metals such as titanium have good dew-point corrosion resistant performance; But cost an arm and a leg, also do not have instance as air preheater.The flue gas low-temperature dew point corrosion has become the technical barrier that the restriction exhaust gas temperature reduces.In order to avoid dew-point temperature; The exhaust gas temperature of prior art up to 170 ℃~about 180 ℃, the greatly waste that has caused the energy of degree, lasting high along with energy prices; More and more need a kind ofly can efficiently utilize fume afterheat, further reduce the novel device of exhaust gas temperature.
Summary of the invention
In order to overcome the deficiency of prior art; The invention discloses the plate air preheater that a kind of heat exchange plate is a glass; This heat exchanger can effectively solve flue gas low-temperature dew point corrosion problem, have simple and compact for structure, processing and fabricating is easy, cost is low, be prone to realize produce in batches, sealing is tight, heat transfer efficiency is high, and is applied widely; The characteristics that pressure drop is little, and have maximum and limit the quantity of and reclaim the characteristics of fume afterheat.
For realizing the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of heat exchange plate is the plate air preheater of glass, has the air preheater framework that is made up of upper cover plate, lower shoe and column; In described air preheater framework, be provided with several corresponding up and down heat exchanger fins of placing; Between per two neighbouring heat exchanger fins, has sealing strip; Promptly between the contact-making surface of two ends of bottom heat exchange plate and top heat exchange plate, place sealing strip; Described neighbouring two-layer sealing strip mistake mutually is staggeredly placed for 90 °, forms some adjacent mutual wrong 90 ° fluid-encapsulated passages, and neighbouring two-layer fluid-encapsulated passage is respectively zone of heat liberation, cold fluid pass; Described zone of heat liberation and cold fluid pass all have suction flange and outlet(discharge) flange; It is characterized in that: described heat exchange plate adopts the rectangular glass sheet, and this glass is silicon boron glass, no boron low-alkali glass or quartz glass.
Between the fluid passage that heat exchange plate constitutes up and down, be provided with support bar; Said support bar is the nonmetal lath of rectangle or serpentine; In order to limiting the channel pitch that two heat exchange plates constitute, and for glass sheet up and down provides support, improve performance such as rigidity, intensity and antihunt action is arranged.
Its material of described sealing strip is nonmetallic materials, like polytetrafluoroethylene (PTFE), silicon rubber, or is metal and nonmetallic like the soft graphite composite plate.
The fluid-encapsulated passage that said a plurality of heat exchange plate superposes up and down and forms; Its four jiaos are equipped with column; Have cavity between described column and the heat exchange plate, in cavity, pour into the mould material with sealing property, said mould material is organosilicon sealant or epoxy resin; Thereby reach the sealing at post angle, prevent heat, cold fluid short circuit.
Said elastic compression mechanism is made up of double-screw bolt, nut, butterfly stage clip; After double-screw bolt passed upper cover plate and lower shoe, butterfly stage clip and nut were loaded onto in two ends, and the nut of screwing reduces upper cover plate and lower shoe distance, thereby the plate between holddown plate and the base plate reaches sealing.
The present invention has following beneficial effect owing to adopted technical scheme as stated:
1, dew-point corrosion resistant is realized long-period stable operation.Owing to adopted glass plate as heat exchange plate; The corrosion resistance extra-heavy of glass; Except that hydrofluoric acid, fluosilicic acid, hot phosphoric acid and highly basic; Other most inorganic acids, organic acid and organic solvent all are not enough to etching glass, and it is one of antiacid dew point corrosion best material, can guarantee it and in the low-temperature flue gas environment, realize long-period stable operation.
2, the recovery fume afterheat of can maximum limiting the quantity of, energy-saving effect is remarkable.Owing to adopted glass plate as heat exchange plate, it is one of acid corrosion-resistant best material, can not receive the influence of acid dew piont corrosion, so exhaust gas temperature can reduce greatly, and exhaust gas temperature can be lower than 100 ℃.Energy-saving effect significantly improves, the maximum recovery fume afterheat of limiting the quantity of.Because this flue gas heat exchange device can reduce exhaust gas temperature greatly, and the heating furnace energy is fully used, therefore can significantly improve heater efficiency.
3, plate can be in rigid frame free harmomegathus, reduce thermal stress damage; And support and hermetically-sealed construction are the good nonmetallic materials of elasticity between the plate, and good damping and flexible support function are arranged; Prevent the glass brittle break, improve service life of equipment, realize long-term operation.
4, pressure drop is little: glass heat exchange plate smooth surface, and fluid flow resistance is little, and is less scaling on the heating surface, almost do not have necessity of cleaning, thereby pressure drop is very little; The pressure drop I reduces the pump or fan power consumption, and through testing and calculating the runner in same length, the pressure drop of non-welding high temperature plate type heat exchanger is merely 2/5~3/5 of bundled tube, can reduce operating cost like this.
5, good heat-transfer: through test, its heat transfer coefficient is 1.2~1.5 times of shell-and-tube heat exchanger under the condition of same flow velocity.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is that the A of Fig. 1 is to view.
Fig. 3 is the B-B cutaway view of Fig. 1.
Fig. 4 is the C-C cutaway view of Fig. 2.
Fig. 5 is a perspective view of the present invention.
Fig. 6 is the structural representation of elasticity hold-down mechanism among the present invention.
In the drawings: 1, glass heat exchange plate, 2, support bar, 3, elastic compression mechanism; 4, sealing strip, 5, column, 6, the hot fluid suction flange; 7, hot fluid outlet(discharge) flange, 8, the cold fluid outlet(discharge) flange, 9, the cold fluid suction flange; 10, upper cover plate, 11, lower shoe 12, nut 13, butterfly stage clip 14, double-screw bolt.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further described:
As shown in Figure 1, embodiment 1: a kind of heat exchange plate is the plate air preheater of glass, has the air preheater framework that is made up of through elastic compression mechanism upper cover plate 10, lower shoe 11 and the column 5 between upper cover plate 10 and lower shoe 11; In described air preheater framework, be provided with several corresponding up and down glass heat exchange sheets of placing 1; Between per two neighbouring heat exchanger fins, have sealing strip 4, promptly between the contact-making surface of corresponding end of bottom heat exchange plate and top heat exchange plate, place sealing strip 4; Its material of described sealing strip is a polytetrafluoroethylene (PTFE), and described sealing strip 4 mistake mutually is staggeredly placed for 90 °, forms some adjacent mutual wrong 90 ° fluid-encapsulated passages, constitutes zone of heat liberation, cold fluid pass respectively; Described zone of heat liberation and cold fluid pass all have suction flange and outlet(discharge) flange; Be that zone of heat liberation has zone of heat liberation suction flange 6 and zone of heat liberation outlet(discharge) flange 7, cold fluid pass has cold fluid pass suction flange 8 and zone of heat liberation outlet(discharge) flange 9; Described heat exchange plate 1 adopts the rectangular glass sheet; This glass is silicon boron glass, no boron low-alkali glass or quartz glass; And between the fluid passage that heat exchange plate constitutes up and down, being provided with support bar 2, said support bar is the nonmetal lath of rectangle, in order to limit the channel pitch that two heat exchange plates constitute; And, improve performance such as rigidity, intensity and antihunt action is arranged for glass sheet up and down provides support.
The fluid-encapsulated passage that said a plurality of heat exchange plate 1 superposes up and down and forms; Its four jiaos are equipped with column 5; Have cavity between described column 5 and the heat exchange plate 1, in cavity, pour into the mould material with sealing property, said mould material is organosilicon sealant or epoxy resin; Thereby reach the sealing at post angle, prevent heat, cold fluid short circuit.
Said elastic compression mechanism 3 is made up of double-screw bolt, nut, butterfly stage clip; After double-screw bolt passed upper cover plate 10 and lower shoe 11, butterfly stage clip and nut were loaded onto in two ends, and the nut of screwing reduces upper cover plate and lower shoe distance; Thereby the plate between holddown plate and the base plate reaches sealing, when installing cover plate 10 with lower cover 11; Need produce certain displacement and thrust by devices such as machinery, hydraulic pressure; Thereby make the gasket seal 4 of 1 of elastic pressuring clamping device 3 pressed glass heat exchange plate reach sealing effectiveness, heat, cold fluid are separated, realize conducting heat.
During use, hot fluid is through hot fluid suction flange 6, zone of heat liberation, hot fluid outlet(discharge) flange 7, and cold fluid carries out the cross-flow convection heat transfer' heat-transfer by convection through cold fluid suction flange 8, cold fluid pass, cold fluid outlet(discharge) flange 9, realizes energy exchange.In diabatic process, along with the exchange heat of cold fluid and hot fluid.During exchange heat, respective change can take place in the temperature of hot and cold runner, causes producing different expanding with heat and contract with cold; Because thermal expansion coefficient of glass is less, swell increment is little, and thermal stress is also less; Elastic compression mechanism 3 is unsteady impaction state in addition, when reaching sealing property, can absorb the thermal expansion distortion that miscellaneous part produces; Thereby the variation of adaptive temperature operating mode reduces thermal stress damage.And between the plate for non-being welded to connect, so it can free to contract and expand in rigid frame, reduce thermal stress damage, the raising service life of equipment.
Embodiment 2: its agent structure is identical with embodiment 1, and among this embodiment, the gasket seal of placing between the said adjacent upper and lower glass heat exchange plate 14 is the silicon rubber pad.
Embodiment 3: its agent structure is identical with embodiment 1, and among this embodiment, said glass heat exchange plate 1 is the ripply glass sheet of processing, thereby reaches the purpose that improves heat transfer efficiency.Several S shape support bars are set between said heat exchange plate, thereby reach the purpose that improves heat transfer efficiency.

Claims (7)

1. the plate air preheater that heat exchange plate is a glass has the air preheater framework that is made up of through elastic compression mechanism (3) upper cover plate (10), lower shoe (11) and column (5); In described air preheater framework, be provided with several corresponding up and down heat exchange plates of placing (1); Between per two neighbouring heat exchange plates, have sealing strip (4), promptly between the contact-making surface of two ends of bottom heat exchange plate and top heat exchange plate, place sealing strip; Described neighbouring two-layer sealing strip mistake mutually is staggeredly placed for 90 °, forms some adjacent mutual wrong 90 ° fluid-encapsulated passages, and neighbouring two-layer fluid-encapsulated passage is respectively zone of heat liberation, cold fluid pass; Described zone of heat liberation and cold fluid pass all have suction flange and outlet(discharge) flange; It is characterized in that: described heat exchange plate (1) adopts the rectangular glass sheet, and this glass is silicon boron glass, no boron low-alkali glass or quartz glass.
2. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass; It is characterized in that: between the fluid passage that heat exchange plate constitutes up and down, be provided with support bar (2); Said support bar is the nonmetal lath of rectangle or S shape; In order to limiting the channel pitch that two heat exchange plates constitute, and for glass sheet up and down provides support, improving rigidity, strength character also has antihunt action.
3. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass, it is characterized in that: the material of described sealing strip (4) is nonmetallic materials.
4. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass, it is characterized in that: the material of described sealing strip (4) is polytetrafluoroethylene (PTFE) or silicon rubber.
5. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass, it is characterized in that: the material of described sealing strip (4) is the soft graphite composite plate.
6. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass; It is characterized in that: superpose up and down four jiaos of the fluid-encapsulated passage formed of said several heat exchange plates (1) are equipped with column (5); Have cavity between described column (5) and the heat exchange plate (1), in cavity, pour into the mould material with sealing property, said mould material is organosilicon sealant or epoxy resin; Thereby reach the sealing at post angle, prevent heat, cold fluid short circuit.
7. a kind of heat exchange plate according to claim 1 is the plate air preheater of glass, it is characterized in that: said elastic compression mechanism (3) is made up of double-screw bolt, nut, butterfly stage clip; After double-screw bolt passed upper cover plate (10) and lower shoe (11), butterfly stage clip and nut were loaded onto in two ends, and the nut of screwing reduces upper cover plate and lower shoe distance, thereby the plate between holddown plate and the base plate reaches sealing.
CN2010105957783A 2010-12-20 2010-12-20 Plate type air preheater with glass as heat exchange plate Active CN102032587B (en)

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Application Number Priority Date Filing Date Title
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CN102032587B true CN102032587B (en) 2012-05-09

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CN102278903A (en) * 2011-08-16 2011-12-14 李永堂 Plate-type heat exchanger
CN103411426A (en) * 2013-08-06 2013-11-27 肖国梁 Energy-saving tin furnace
CN103512416B (en) * 2013-10-14 2015-12-30 洛阳瑞昌石油化工设备有限公司 The plate type heat exchanger of Efficient non-metallic corrosion resistant heat-exchanger rig and this heat-exchanger rig of tool
CN105222624A (en) * 2015-11-10 2016-01-06 洛阳瑞昌石油化工设备有限公司 A kind of gas phase and liquid phase heat exchange high-pressure resisting plate heat exchanger
CN106090989B (en) * 2016-08-09 2017-12-26 洛阳瑞昌石油化工设备有限公司 A kind of elastic pressuring clamping device for plate air preheater
CN107806785A (en) * 2017-10-26 2018-03-16 洛阳瑞昌石油化工设备有限公司 A kind of flue gas heat-exchange unit with defrosting function
RU2688384C1 (en) * 2018-07-16 2019-05-21 Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А." (СГТУ имени Гагарина Ю.А.) Heat recovery unit
CN112696845B (en) * 2020-06-01 2022-04-15 山东黄金矿业科技有限公司深井开采实验室分公司 Ground source heat pump system capable of storing heat according to indoor temperature

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CA856161A (en) * 1970-11-17 Charles F. Von Dreusche, Jr. Calcination method and apparatus
FR2286359A1 (en) * 1974-09-24 1976-04-23 Cit Alcatel Heat exchanger for one or more corrosive fluids - employing glass tube bundle
CN2331856Y (en) * 1998-06-24 1999-08-04 申若飞 Smoke heat exchanger
CN101191700A (en) * 2007-12-14 2008-06-04 中南大学 Dew-point corrosion resistant residual heat recovering system
CN201203365Y (en) * 2008-03-27 2009-03-04 洛阳瑞昌石油化工设备有限公司 Low temperature flue gas anti-dew point corrosion energy-saving heat exchanger
CN201582842U (en) * 2009-11-17 2010-09-15 中国石油化工集团公司 Combined air preheater
CN101876622A (en) * 2009-11-27 2010-11-03 北京科技大学 Experimental device for simulating corrosion of sulfuric acid dew point and test method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA856161A (en) * 1970-11-17 Charles F. Von Dreusche, Jr. Calcination method and apparatus
FR2286359A1 (en) * 1974-09-24 1976-04-23 Cit Alcatel Heat exchanger for one or more corrosive fluids - employing glass tube bundle
CN2331856Y (en) * 1998-06-24 1999-08-04 申若飞 Smoke heat exchanger
CN101191700A (en) * 2007-12-14 2008-06-04 中南大学 Dew-point corrosion resistant residual heat recovering system
CN201203365Y (en) * 2008-03-27 2009-03-04 洛阳瑞昌石油化工设备有限公司 Low temperature flue gas anti-dew point corrosion energy-saving heat exchanger
CN201582842U (en) * 2009-11-17 2010-09-15 中国石油化工集团公司 Combined air preheater
CN101876622A (en) * 2009-11-27 2010-11-03 北京科技大学 Experimental device for simulating corrosion of sulfuric acid dew point and test method thereof

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Patentee after: LUOYANG RUICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd.

Address before: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan

Patentee before: LUO YANG RUICHANG PETRO-CHEMICAL EQUIPMENT Co.,Ltd.

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Denomination of invention: A plate type air preheater with glass heat exchange plates

Effective date of registration: 20220810

Granted publication date: 20120509

Pledgee: Zhongyuan bank Limited by Share Ltd. Luoyang branch

Pledgor: LUOYANG RUICHANG ENVIRONMENTAL ENGINEERING Co.,Ltd.

Registration number: Y2022980012318

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