CN106524818A - Anti-corrosion heat exchange pipe capable of adjusting wall temperature - Google Patents
Anti-corrosion heat exchange pipe capable of adjusting wall temperature Download PDFInfo
- Publication number
- CN106524818A CN106524818A CN201611221673.5A CN201611221673A CN106524818A CN 106524818 A CN106524818 A CN 106524818A CN 201611221673 A CN201611221673 A CN 201611221673A CN 106524818 A CN106524818 A CN 106524818A
- Authority
- CN
- China
- Prior art keywords
- heat
- temperature
- tube
- heat exchanger
- material layer
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
-
- 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
- F28F1/24—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 and extending transversely
- F28F1/26—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 and extending transversely the means being integral with the element
- F28F1/28—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 and extending transversely the means being integral with the element the element being built-up from finned sections
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses an anti-corrosion heat exchange pipe capable of adjusting the wall temperature. The heat exchange pipe is composed of an inner pipe (3) and an outer pipe (1) in a sleeved mode. An acid-proof material layer (2) is arranged on the outer wall of the inner pipe (3) in a composite mode. When a shell pass medium of the outer pipe (1) is gas, fins (4) are arranged on the outer side of the outer pipe (1). The thickness of the acid-proof material layer in the heat exchange pipe is determined by carrying out heat transfer calculation on the dew point of a high-temperature medium and the heat-conducting property of an acid-proof material; and by means of the thickness and the heat-transfer characteristic of the acid-proof material layer, it is ensured that the wall temperature on the high-temperature side is higher than the dew point of the high-temperature medium, and the temperature needed by a reaction is ensured.
Description
Technical field
It is the present invention relates to the heat exchange element of heat transmission equipment, particularly a kind of suitable for corrosive medium and wall temperature to be adjusted
Novel heat exchange pipe.
Background technology
Substantial amounts of heat transmission equipment is needed in metallurgical, thermoelectricity and chemical process, these heat transmission equipments are used for reclaiming
The waste heat of the high-temperature gas produced during stating, or for removing the reaction heat in course of reaction.Heat transmission equipment is using process
In because following two reason, the wall temperature for exchanging heat pipe has certain requirement：For the flue gas containing acidic components, there is dew point
Etching problem, it is desirable to which the wall temperature of heat exchanger tube should be higher than that flue gas dew point；In some chemical process, due to chemical balance or physical property
Needs, the wall temperature of heat exchanger tube should ensure that temperature necessary to reaction.Reclaimed more than the high-temperature gas containing acidic components at present
The heat transmission equipment of reaction heat is removed in heat or chemical reaction process mainly using heat pipe as heat exchange element, such as heat pipe economizer,
Heat pipe boiler and heat pipe cooler etc..
Heat pipe is a kind of high-performance heat transfer components, and it adjusts heat exchange using the phase transformation of the working medium being filled between internal-external heat exchanger pipe
The wall temperature of pipe, it is ensured that the heat exchanger tube wall temperature in gas side is higher than the dew point of gas, so as to reach the problem for avoiding dew point corrosion,
Realize the normal operation of the waste heat equipment such as heat pipe economizer, heat pipe boiler.But there are following some shortcomings in heat pipe waste heat equipment：
（1）Heat pipe is the heat exchange element of an independent closing, and in use with the passage of time, in pipe, incoagulable gas is continuous
Increase, heat exchange property is constantly decayed, until can not exchange heat, the service life of heat pipe equipment is generally in 5 ~ 8 years；（2）Heat pipe waste heat
Equipment is generally made up of many heat pipes, and the heat pipe of dense arrangement causes maintenance not have space, when certain root heat pipe is damaged, can neither
Accurately judge its position being located, cannot also overhaul；（3）Heat pipe commonly uses working medium for water, and the pressure for vaporization of water is very high, the work of heat pipe
Make pressure limit within 4.5MPa, otherwise can booster, under this pressure, water temperature is less than 260 DEG C, and this means that uses heat pipe conduct
The boiler maximum working pressure of heat exchange element is less than 2.5MPa, and this pressure can not meet production needs sometimes.
The content of the invention
It is an object of the invention to：A kind of corrosion-resistant heat exchanger tube that can adjust wall temperature is designed, the heat exchanger tube realizes wall temperature
Adjust, prevent dew point corrosion, keep temperature of reactor.
The present invention technical solution be：The heat exchanger tube is made up of inner and outer tubes suit, is combined in the outer wall of inner tube
Acid resisting material layer.
Wherein, when the shell side medium of outer tube is gas, fin is set in the outside of outer tube.
Wherein, in the compound acid resisting material layer of outer wall of inner tube, the thickness of acid resisting material layer determines according to the methods below：（1）
When the heat exchanger tube is used as economizer or waste heat boiler（Evaporimeter）Heat exchange element when, according to the dew point and acidproof material of high-temperature medium
The heat conductivility of material is calculated by heat transfer and is determined；（2）When the heat exchanger tube is used as to learn the heat exchange of reaction heat collector or cooler
During element, the heat conductivility of temperature and acid resisting material according to needed for chemical reaction is calculated by heat transfer and is determined.
During normal work, the heat of high-temperature medium is delivered to compound acid resisting material layer and by acidproof material by inner tube or outer tube
The bed of material is delivered to outer tube or inner tube, then passes to cryogenic media by outer tube or inner tube, the thickness and heat transfer based on acid resisting material layer
Performance characteristics, it is ensured that have certain temperature difference between the wall temperature and high-temperature medium of the outer tube or inner tube of high-temperature medium side, this temperature
The wall temperature of difference guarantee outer tube or inner tube is higher than the dew point of high-temperature medium or the temperature required for holding reaction, so as to avoid dew point corruption
Erosion adjusts wall temperature guarantee reaction temperature, it is ensured that the operation safety of heat transmission equipment.
The present invention has advantages below：
1st, heat exchanger tube of the invention can be used for boiler economizer, waste heat boiler（Evaporimeter）, reaction heat collector or cooler etc.
The heat exchange element of heat transmission equipment, improves the efficiency and security of heat transmission equipment, increases the service life.
2nd, economizer, waste heat pot reaction heat collector or the reaction cooler being made up of the heat exchanger tube of the present invention can avoid dew point rotten
Erosion problem, it is also possible to effectively adjust heat exchanger tube wall temperature, meets the need of gas waste-heat recovery or chemical reaction heat collector or cooler
Will, it is ensured that the safe operation of heat transmission equipment.
3rd, by the present invention set of heat exchange tubes into heat transmission equipment, maintenance is convenient.
4th, when heat exchanger tube is damaged, it is possible to achieve the on-line checking of heat transmission equipment, on-call maintenance is found in time.
5th, as the working medium between internal-external heat exchanger pipe is etch resistant material layer, when inner tube or outer tube are because of contact corrosion gas
Body or chemical reactant and when producing corrosion phenomenon, simply unilateral corrosion will not produce cold fluid and hot fluid because corrosion produces safety
Hidden danger.
6th, according to the requirement that dew-point temperature or chemical reaction are temperature required, the thickness of appropriate design acid resisting material layer is adjusted
Heat exchanger tube wall temperature, meets industrial production needs.
7th, the acid resisting material by being combined different qualities different-thickness on outer wall of inner tube realizes that wall temperature is adjusted, and prevents dew point
Corrosion, keeps temperature of reactor.
8th, when the shell side medium of outer tube is gas, fin is set in the outside of outer tube low to make up gas heat transfer coefficient
Shortcoming.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1 outer tube, 2 acid resisting material layers, 3 inner tubes, 4 fins.
Specific embodiment
It should be understood that illustrating the technical solution of the present invention below in conjunction with the accompanying drawings, rather than the present invention is limited by any way
Scope.In order to describe simplicity, the pipe fittings such as conventional flange or equipment appurtenance in explanation, are omitted, these pipe fittings or equipment appurtenance sheet
The those skilled in the art of industry are designed as needed.The those of ordinary skill of the industry can be so that many modifications may be made or expands
Purposes, all these modifications or expansion purposes are regarded as protection scope of the present invention.
As shown in figure 1, the heat exchanger tube is made up of inner tube 3 and the suit of outer tube 1, acid resisting material layer is combined in the outer wall of inner tube 3
2。
Wherein, when the shell side medium of outer tube 1 is gas, fin 4 is set in the outside of outer tube 1.
Wherein, in the compound acid resisting material layer 2 of 3 outer wall of inner tube, the thickness of acid resisting material layer 2 determines according to the methods below：
（1）When the heat exchanger tube is used as economizer or waste heat boiler（Evaporimeter）Heat exchange element when, according to the dew point of high-temperature medium and resistance to
The heat conductivility of sour material is calculated by heat transfer and is determined；（2）When the heat exchanger tube is used as to learn reaction heat collector or cooler
During heat exchange element, the heat conductivility of temperature and acid resisting material according to needed for chemical reaction is calculated by heat transfer and is determined.
During normal work, the heat of high-temperature medium is delivered to compound acid resisting material layer 2 and by resistance to by inner tube 3 or outer tube 1
Sour material layer is delivered to outer tube or inner tube, then passes to cryogenic media by outer tube 1 or inner tube 3, the thickness based on acid resisting material layer 2
With heat transfer property feature, it is ensured that have certain temperature between the wall temperature and high-temperature medium of the outer tube 1 or inner tube 3 of high-temperature medium side
Poor, this temperature difference ensures that outer tube 1 or the wall temperature of inner tube 3 are higher than the dew point of high-temperature medium or keep reacting required temperature, from
And avoid dew point corrosion or adjust wall temperature ensureing reaction temperature, it is ensured that the operation safety of heat transmission equipment.
Claims (3)
1. the corrosion-resistant heat exchanger tube that can adjust wall temperature, the heat exchanger tube is by inner tube（3）And outer tube（1）Suit composition, is characterized in that：
In inner tube（3）The compound acid resisting material layer of outer wall（2）.
2. the corrosion-resistant heat exchanger tube that can adjust wall temperature according to claim 1, is characterized in that：In inner tube（3）Outer wall is multiple
Close acid resisting material layer（2）, acid resisting material layer（2）Thickness determine according to the methods below：One is to be used as to save coal when the heat exchanger tube
Device or waste heat boiler（Evaporimeter）Heat exchange element when, according to the heat conductivility of the dew point and acid resisting material of high-temperature medium by heat
Amount transmission is calculated and is determined；Two is when the heat exchanger tube is used as the heat exchange element for learning reaction heat collector or cooler, according to chemical anti-
Required temperature and the heat conductivility of acid resisting material is answered to calculate determination by heat transfer.
3. the corrosion-resistant heat exchanger tube that can adjust wall temperature according to claim 1, is characterized in that：Work as outer tube（1）Shell side
When medium is gas, in outer tube（1）Outside arrange fin（4）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221673.5A CN106524818A (en) | 2016-12-27 | 2016-12-27 | Anti-corrosion heat exchange pipe capable of adjusting wall temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611221673.5A CN106524818A (en) | 2016-12-27 | 2016-12-27 | Anti-corrosion heat exchange pipe capable of adjusting wall temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106524818A true CN106524818A (en) | 2017-03-22 |
Family
ID=58338890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611221673.5A Pending CN106524818A (en) | 2016-12-27 | 2016-12-27 | Anti-corrosion heat exchange pipe capable of adjusting wall temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106524818A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63153399A (en) * | 1987-11-12 | 1988-06-25 | Furukawa Electric Co Ltd:The | Heat transfer tube for heat exchanger |
| JP2002310594A (en) * | 2001-02-09 | 2002-10-23 | Nkk Corp | Heat exchanger with heat exchanger tube |
| CN102778159A (en) * | 2011-05-13 | 2012-11-14 | 李文涛 | Anticorrosion solid-state pressure-resistant omni-directional heat tube |
| CN103245227A (en) * | 2013-04-28 | 2013-08-14 | 王云清 | Flue gas waste heat recovery element and device capable of breaking through low temperature dew point |
| CN104697381A (en) * | 2015-03-24 | 2015-06-10 | 苏州新区华士达工程塑胶有限公司 | Teflon heat exchange pipe |
-
2016
- 2016-12-27 CN CN201611221673.5A patent/CN106524818A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63153399A (en) * | 1987-11-12 | 1988-06-25 | Furukawa Electric Co Ltd:The | Heat transfer tube for heat exchanger |
| JP2002310594A (en) * | 2001-02-09 | 2002-10-23 | Nkk Corp | Heat exchanger with heat exchanger tube |
| CN102778159A (en) * | 2011-05-13 | 2012-11-14 | 李文涛 | Anticorrosion solid-state pressure-resistant omni-directional heat tube |
| CN103245227A (en) * | 2013-04-28 | 2013-08-14 | 王云清 | Flue gas waste heat recovery element and device capable of breaking through low temperature dew point |
| CN104697381A (en) * | 2015-03-24 | 2015-06-10 | 苏州新区华士达工程塑胶有限公司 | Teflon heat exchange pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203454867U (en) | Highly-corrosive resistant shell and tube heat exchanger | |
| CN103776280B (en) | There is the vertical heat exchanger of convex thin tubesheet | |
| CN201246987Y (en) | Phase-change heat exchanger | |
| WO2019019205A1 (en) | Gas-gas high-temperature heat exchanger | |
| CN100593682C (en) | Composite type anticorrosive heat exchanger rig | |
| CN202485507U (en) | Boiler flue gas waste heat recovery device | |
| CN105180128A (en) | Raw coke oven gas sensible heat recycling device and recycling method | |
| CN110440233B (en) | Waste heat recovery system of high-temperature fluid in metallurgical process | |
| CN106524818A (en) | Anti-corrosion heat exchange pipe capable of adjusting wall temperature | |
| CN204514141U (en) | Split type long-service life high-efficiency phase-change heat-exchanger | |
| CN203837009U (en) | Air preheater | |
| CN206310965U (en) | A kind of macromolecule composite phase-change waste-heat recovery device | |
| CN206274229U (en) | A kind of New enamel formula radial heat exchanger | |
| CN210462977U (en) | Integrated superheater | |
| CN107246815A (en) | A kind of anti-corrosion heat-condutive oil heat exchanger | |
| CN209744357U (en) | Heat exchange system | |
| CN206832084U (en) | Heat exchanger | |
| CN201897430U (en) | Anti-corrosive structure for metal heat exchanger | |
| CN205151799U (en) | A device that is used for titanium white powder calcining kiln kiln tail residual heat from flue gas | |
| CN210070689U (en) | Composite phase change heat exchanger | |
| Sysoev et al. | Development of heat exchanger for heat recovery of process gases | |
| CN201522213U (en) | Tube-plate-type heat exchanger cylinder body provided with compensating device | |
| CN105351906A (en) | Industrial flue gas waste heat recovery device based on liquid metals | |
| CN110440242B (en) | Integrated superheater | |
| CN205079626U (en) | Flue gas exhaust -heat boiler device of large -scale sulphuric acid production line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170322 |