CN216346373U - Novel glass tube air preheater - Google Patents

Novel glass tube air preheater Download PDF

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Publication number
CN216346373U
CN216346373U CN202123140038.3U CN202123140038U CN216346373U CN 216346373 U CN216346373 U CN 216346373U CN 202123140038 U CN202123140038 U CN 202123140038U CN 216346373 U CN216346373 U CN 216346373U
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CN
China
Prior art keywords
tube
shell
tube plate
glass
glass tube
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Active
Application number
CN202123140038.3U
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Chinese (zh)
Inventor
李腾飞
韩永辉
高松
纪晓毅
吴克元
宁石东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Fangyuan Industrial Furnace Design And Manufacturing Co ltd
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Henan Fangyuan Industrial Furnace Design And Manufacturing Co ltd
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Priority to CN202123140038.3U priority Critical patent/CN216346373U/en
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    • 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 utility model discloses a novel glass tube air preheater, which comprises a shell, wherein the whole shell is a square cavity shell, and the top of the shell is provided with an anti-falling object protecting net; the heat transfer element inside the shell is a tube bundle consisting of glass tubes; end tube plates are symmetrically arranged at two ends of the shell, and a middle tube plate is arranged in the middle of the shell; the middle tube plate is arranged in a mounting groove in the middle of the inside of the shell; the end tube plate and the middle tube plate are both provided with tube holes which are uniformly distributed; the glass tube is restrained and supported by the tube holes on the end tube plates at the two ends and the middle tube plate. The utility model adopts the glass tube as the heat transfer element, which can effectively prevent the low-temperature dew point corrosion of the heat transfer element, has smooth surface and is not easy to accumulate dust, the glass tube and the tube plate are sealed by the polytetrafluoroethylene ring, and the polytetrafluoroethylene ring has the performances of corrosion resistance, high temperature resistance, aging resistance, particularly water washing resistance and the like.

Description

Novel glass tube air preheater
Technical Field
The utility model relates to the technical field of air preheater equipment, in particular to a novel glass tube air preheater.
Background
In recent years, the energy conservation and emission reduction work of various refinery enterprises is continuously developed, the exhaust gas temperature of a heating furnace is required to be lower and lower, and the problem of low-temperature dew point corrosion of the exhaust gas is increasingly prominent. Since the common fuel oil or fuel gas of a refinery inevitably contains a small amount of sulfur, the sulfur is combusted to form SO2Further generation of SO3. When the temperature of the discharged smoke is reduced to below 400 ℃, SO3It combines with the water vapor in the flue gas to generate sulfuric acid vapor. During the further reduction of the flue gas temperature, the sulfuric acid vapor condenses gradually to a liquid. Due to the existence of the sulfuric acid liquid, on one hand, dust in the flue gas is adhered to become wet dust and sticky dirt which are difficult to clean, so that the flue gas channel is blocked; on the other hand, the acid liquor corrodes the equipment body, so that the steel structure is chemically corroded. In the operation process of the existing air preheater, the problems of dust deposition and scaling and dew point corrosion of smoke are serious, the smoke discharge temperature is high, the environmental protection cannot be realized, and the temperature rise of combustion air is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a novel glass tube air preheater.
In order to achieve the purpose, the utility model adopts the following technical scheme: a novel glass tube air preheater comprises a shell, wherein the shell is a square cavity shell, and an anti-falling object protecting net is arranged at the top of the shell; the heat transfer element inside the shell is a tube bundle consisting of glass tubes; end tube plates are symmetrically arranged at two ends of the shell, and a middle tube plate is arranged in the middle of the shell; the middle tube plate is arranged in a mounting groove in the middle of the inside of the shell; the end tube plate and the middle tube plate are both provided with tube holes which are uniformly distributed; the glass tube is restrained and supported by the tube holes on the end tube plates at the two ends and the middle tube plate; a sealing ring is arranged between the end tube plate and the middle tube plate as well as between the end tube plate and the glass tube; and a spoiler is also arranged in the glass tube.
The sealing ring is a polytetrafluoroethylene sealing ring.
And the outer surfaces of the end tube plates and the middle tube plate are coated with a layer of enamel with the thickness of about 0.3-0.8 mm.
The glass tube is made of high borosilicate glass.
The end part of the glass tube is provided with a limiting barrier strip.
The utility model adopts the structure and has the following advantages: the glass tube is used as a heat transfer element, the heat transfer element can be effectively prevented from low-temperature dew point corrosion, the surface is smooth and not easy to accumulate dust, the temperature rise of combustion air is facilitated, meanwhile, the glass tube and the tube plate are sealed by the polytetrafluoroethylene ring, and the polytetrafluoroethylene ring has the performances of corrosion resistance, high temperature resistance, ageing resistance, particularly water flushing resistance and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an axial side sectional view of the present invention.
FIG. 3 is a schematic view of the glass tube and tube sheet sealing structure of the present invention.
Fig. 4 is a schematic view of the installation of the spacing bar of the present invention.
FIG. 5 is a schematic view of the spoiler installation of the present invention.
In the figure: 1. the device comprises a shell, 2, a glass tube, 3, an end tube plate, 4, a middle tube plate, 5, a sealing ring, 6, an anti-falling object protecting net, 7, a limiting barrier strip, 8 and a spoiler.
Detailed Description
The utility model is described with reference to the accompanying drawings.
As shown in fig. 1-5, the novel glass tube air preheater comprises a shell 1, wherein the shell 1 is a square hollow shell, and an anti-falling object protection net is arranged at the top of the shell 1; the falling-object-preventing protection net can prevent sundries falling from the upper part from damaging the glass tube 2 during installation; the heat transfer element inside the shell 1 is a tube bundle consisting of glass tubes 2; end tube plates 3 are symmetrically arranged at two ends of the shell 1, and a middle tube plate 4 is arranged in the middle of the shell 1; the middle tube plate 4 is arranged in a mounting groove in the middle of the inside of the shell 1; the end tube plate 3 and the middle tube plate 4 are both provided with evenly arranged tube holes; the glass tube 2 is restrained and supported by tube holes on the end tube plates 3 and the middle tube plate 4 at two ends; a sealing ring 5 is arranged between the end tube plate 3 and the middle tube plate 4 as well as between the end tube plate and the glass tube 2; the inner part of the glass tube 2 is also provided with a spoiler 8, and the spoiler 8 is used for enhancing the disturbance of air in the glass tube 2 and enhancing the heat exchange capability of the glass tube; the sealing ring 5 is a polytetrafluoroethylene sealing ring, the sealing ring 5 is made of polytetrafluoroethylene and has excellent performances such as high temperature resistance and corrosion resistance, and after the sealing ring is expanded or compressed, the sealing ring still has a certain resilience force, so that the sealing between the glass tube 2 and the tube plate can be ensured; the outer surfaces of the end tube plate 3 and the middle tube plate 4 are coated with a layer of enamel with the thickness of about 0.3-0.8 mm, and dew point corrosion can be well resisted by adopting the enamel; the glass tube 2 is made of high borosilicate glass, the high borosilicate glass has a low thermal coefficient, good chemical stability, particularly excellent sulfuric acid corrosion resistance, smooth surface, non-adhesiveness, difficult dust deposition and excellent surface wear resistance compared with steel; and a limiting barrier strip 7 is arranged at the end of the glass tube 2. The limiting stop 7 is used to prevent the glass tube 2 from slipping out of the end of the housing 1 during operation.
When the utility model is used, flue gas passes through the shell 1 and passes through the tube bundle consisting of the high borosilicate glass tubes 2 of the heat transfer element, so that the utility model can effectively prevent low-temperature dew point corrosion, and has smooth surface and difficult dust accumulation; and a polytetrafluoroethylene sealing ring 5 is arranged between the end tube plate 3 and the middle tube plate 4 and between the end tube plate and the glass tube 2, the polytetrafluoroethylene sealing ring 5 has corrosion resistance, high temperature resistance and ageing resistance, can ensure the sealing of the glass tube 2 and the end tube plate 3 and the middle tube plate 4, and can prolong the service life of the equipment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (5)

1. The utility model provides a novel glass manages air heater, includes casing (1), characterized by: the whole shell (1) is a square cavity shell, and an anti-falling object protecting net is arranged at the top of the shell (1); the heat transfer element inside the shell (1) is a tube bundle consisting of glass tubes (2); end tube plates (3) are symmetrically arranged at two ends of the shell (1), and a middle tube plate (4) is arranged in the middle of the shell (1); the middle tube plate (4) is arranged in a mounting groove in the middle of the inside of the shell (1); the end tube plate (3) and the middle tube plate (4) are both provided with tube holes which are uniformly distributed; the glass tube (2) is restrained and supported by tube holes on the end tube plates (3) and the middle tube plate (4) at two ends; a sealing ring (5) is arranged between the end tube plate (3) and the middle tube plate (4) and between the end tube plate and the glass tube (2); and a spoiler is also arranged in the glass tube (2).
2. A novel glass tube air preheater as set forth in claim 1, wherein: the sealing ring (5) is a polytetrafluoroethylene sealing ring (5).
3. A novel glass tube air preheater as set forth in claim 1, wherein: the outer surfaces of the end tube plate (3) and the middle tube plate (4) are coated with a layer of enamel with the thickness of about 0.3-0.8 mm.
4. A novel glass tube air preheater as set forth in claim 1, wherein: the glass tube (2) is made of high borosilicate glass.
5. A novel glass tube air preheater as set forth in claim 1, wherein: the end part of the glass tube (2) is provided with a limiting barrier strip.
CN202123140038.3U 2021-12-15 2021-12-15 Novel glass tube air preheater Active CN216346373U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123140038.3U CN216346373U (en) 2021-12-15 2021-12-15 Novel glass tube air preheater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123140038.3U CN216346373U (en) 2021-12-15 2021-12-15 Novel glass tube air preheater

Publications (1)

Publication Number Publication Date
CN216346373U true CN216346373U (en) 2022-04-19

Family

ID=81164692

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123140038.3U Active CN216346373U (en) 2021-12-15 2021-12-15 Novel glass tube air preheater

Country Status (1)

Country Link
CN (1) CN216346373U (en)

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