CN202382622U - Inorganic heat transfer type low-temperature corrosion prevention air preheater - Google Patents
Inorganic heat transfer type low-temperature corrosion prevention air preheater Download PDFInfo
- Publication number
- CN202382622U CN202382622U CN201120445585XU CN201120445585U CN202382622U CN 202382622 U CN202382622 U CN 202382622U CN 201120445585X U CN201120445585X U CN 201120445585XU CN 201120445585 U CN201120445585 U CN 201120445585U CN 202382622 U CN202382622 U CN 202382622U
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- transfer element
- air preheater
- transfer type
- temperature corrosion
- 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.)
- Expired - Fee Related
Links
- 238000005536 corrosion prevention Methods 0.000 title 1
- 238000005260 corrosion Methods 0.000 claims abstract description 24
- 230000007797 corrosion Effects 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 11
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003546 flue gas Substances 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 4
- 238000007665 sagging Methods 0.000 claims description 19
- 239000003517 fume Substances 0.000 claims description 15
- 239000011148 porous material Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 210000003298 dental enamel Anatomy 0.000 description 2
- 244000144985 peep Species 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Air Supply (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
一种无机传热式防低温腐蚀空气预热器，其主要是：在烟气侧内的部分或全部传热元件外表面设有传热效果好的耐腐蚀层。最好在烟气出口组件内也设耐腐蚀层。除在传热元件上设与中间管板管孔对应的中间密封环外，该中间密封环与中间管板的管孔之间还设有陶纤绳。另在传热元件一端设密封机构，该机构有一个与传热元件同轴的螺柱，该螺柱穿过开口卡在端管板上的槽钢形压板上的通孔，套在压板外螺柱上的弹簧另一端与螺母相邻。本实用新型防腐蚀性能好，设备使用寿命长，回收热量多，热效率高。
An inorganic heat-transfer type low-temperature corrosion-resistant air preheater mainly includes: a corrosion-resistant layer with good heat transfer effect is provided on the outer surface of part or all of the heat transfer elements in the flue gas side. Preferably also a corrosion resistant layer is provided in the flue gas outlet assembly. In addition to the intermediate sealing ring corresponding to the tube hole of the intermediate tube plate is provided on the heat transfer element, a ceramic fiber rope is also arranged between the intermediate sealing ring and the tube hole of the intermediate tube plate. In addition, a sealing mechanism is provided at one end of the heat transfer element. This mechanism has a stud coaxial with the heat transfer element. The other end of the spring on the stud is adjacent to the nut. The utility model has good anti-corrosion performance, long service life of the equipment, large amount of recovered heat and high thermal efficiency.
Description
Technical field
The utility model relates to a kind of flue gas waste heat recovery apparatus.
Background technology
At present, heat-pipe air preheater is widely used in the reheating furnace energy-saving equipment of industries such as oil, chemical industry, metallurgy.But there is the flue gas medium temperature of many operating modes lower, when tube wall temperature is lower than 120 ℃, the low temperature dewfall can takes place, heat transfer element is caused heavy corrosion, and reduced air preheater service life at the heat exchange surface ash deposit and slag buildup in fume side.In order to solve this difficult problem, adopt the ND steel pipe as heat transfer element at present, or adopt air by-pass, preposition smoke-gas preheater to reach and prevent the low temperature dewfall to improve tube wall temperature through regulating the fin pitch.But only limit to quality problems and parameter, the structural limitations of steel pipe self, above method is still not ideal enough for dew-point corrosion resistant.
Summary of the invention
The purpose of the utility model is to provide a kind of corrosion resistance and good, long service life, inorganic heat transfer type anti-low-temperature corrosion air preheater that heat transfer efficiency is high.The utility model mainly includes heat transfer element, tube sheet, bobbin carriage assembly and sealing mechanism.Wherein, heat transfer element is an inorganic heat transfer type heat pipe bundle, and preferably heat pipe outer surface is provided with the fin of expansion heat-transfer surface, and this fin can be helical fin, fin, fin, H type fin and studded tube etc.Above-mentioned heat transfer element passes sagging plate and the corresponding with it through holes of two end tube sheets, and three sealing rings on this heat transfer element place respectively in the corresponding with it through hole of sagging plate and two end tube sheets, and heat transfer element and tube sheet are 2-20 ° of angle.For preventing that flue gas and air from mixing through the pore of sagging plate, reduce the thermal efficiency, except that on heat transfer element, establishing the intermediate seal ring corresponding, also be provided with the pottery towline of enhanced leaktightness between the pore of this intermediate seal ring and sagging plate with the sagging plate pore.Best; Only setting up defences at heat transfer element one end, the heat transfer element expanded by heating produces displacement and makes the intermediate seal ring break away from the sealing mechanism of pore; There is a double-screw bolt coaxial with heat transfer element in this mechanism; This double-screw bolt passes the through hole of open card on the channel steel shape pressing plate of end on the tube sheet, and the spring other end and the nut that are enclosed within on the outer double-screw bolt of pressing plate are adjacent, and the elastic force maintenance intermediate seal ring through spring is in the state of sealing pore all the time.Both sides at above-mentioned sagging plate and two end tube sheets are provided with the bobbin carriage plate; Itself and two ends tube sheet surround the bobbin carriage of upper and lower opening; Sagging plate is divided into air side and fume side, is provided with air intlet pipe assembly in the air side open upper end, is provided with air outlet slit pipe assembly at the air side lower ending opening; Be provided with the smoke outlet tube assembly in the fume side open upper end, be provided with the flue gas inlet tube assembly at the fume side lower ending opening; Be preferably in and establish soot blower interface and peep hole on the fume side bobbin carriage.For solving air preheater dew point corrosion problem, the part or all of heat transfer element outer surface in fume side is provided with the good anti-corrosion layer of heat-transfer effect, is preferably in and also establishes anti-corrosion layer in the exhanst gas outlet assembly, to prevent cold end corrosion.
The utility model compared with prior art has following advantage: Corrosion Protection is good, and service life of equipment is long, and it is many to reclaim heat, and the thermal efficiency is high.
Description of drawings
Fig. 1 looks simplified schematic diagram for the utility model master.
Fig. 2 cuts open simplified schematic diagram for the utility model heat transfer element office.
The specific embodimentInorganic heat transfer type anti-low-temperature corrosion air preheater master shown in Figure 1 looks in the simplified schematic diagram, and heat transfer element is an inorganic heat transfer type heat pipe bundle 1, and heat pipe outer surface is provided with helical fin 2.Above-mentioned heat transfer element passes sagging plate 3 and the corresponding with it through holes of two end tube sheets 4, and three sealing rings on this heat transfer element place respectively in the corresponding with it through hole of sagging plate and two end tube sheets, and heat transfer element and tube sheet are 2-20 ° of angle.Except that on heat transfer element, establishing the intermediate seal ring corresponding, also be provided with the pottery towline between the pore of this intermediate seal ring 5 and sagging plate with the sagging plate pore.Simultaneously establish sealing mechanism at heat transfer element one end; There is a double-screw bolt 6 coaxial with heat transfer element in this mechanism; This double-screw bolt passes the through hole of open card on the channel steel shape pressing plate 7 on the end tube sheet, and spring 8 other ends that are enclosed within on the outer double-screw bolt of pressing plate are adjacent with nut 9, as shown in Figure 2.Both sides at above-mentioned sagging plate and two end tube sheets are provided with bobbin carriage plate 10; Itself and two ends tube sheet surround the bobbin carriage of upper and lower opening; Sagging plate is divided into air side and fume side; Be provided with air intlet pipe assembly 11 in the air side open upper end, be provided with air outlet slit pipe assembly 12 at the air side lower ending opening; Be provided with smoke outlet tube assembly 13 in the fume side open upper end, be provided with flue gas inlet tube assembly 14 at the fume side lower ending opening; On the fume side bobbin carriage, establish soot blower interface 15 and peep hole 16.All the heat transfer element outer surface is provided with the good corrosion resistant enamel layer of heat-transfer effect in fume side, in the exhanst gas outlet assembly, also establishes the corrosion resistant enamel layer in addition.
Claims (5)
1. inorganic heat transfer type anti-low-temperature corrosion air preheater; Heat transfer element is an inorganic heat transfer type heat pipe bundle, and it passes sagging plate and the corresponding with it through holes of two end tube sheets, and three sealing rings on this heat transfer element place respectively in the corresponding with it through hole of sagging plate and two end tube sheets; Heat transfer element and tube sheet are 2-20 ° of angle; Both sides at above-mentioned sagging plate and two end tube sheets are provided with the bobbin carriage plate, and itself and two ends tube sheet surround the bobbin carriage of upper and lower opening, and sagging plate is divided into air side and fume side; Be provided with air intlet pipe assembly in the air side open upper end, be provided with air outlet slit pipe assembly at the air side lower ending opening; Be provided with the smoke outlet tube assembly in the fume side open upper end, be provided with the flue gas inlet tube assembly at the fume side lower ending opening, it is characterized in that: the part or all of heat transfer element outer surface in fume side is provided with the good anti-corrosion layer of heat-transfer effect.
2. inorganic heat transfer type anti-low-temperature corrosion air preheater according to claim 1 is characterized in that: in the exhanst gas outlet assembly, also establish anti-corrosion layer.
3. inorganic heat transfer type anti-low-temperature corrosion air preheater according to claim 1 and 2; It is characterized in that: except that on heat transfer element, establishing the intermediate seal ring corresponding, also be provided with the pottery towline between the pore of this intermediate seal ring and sagging plate with the sagging plate pore.
4. inorganic heat transfer type anti-low-temperature corrosion air preheater according to claim 3; It is characterized in that: establish sealing mechanism at heat transfer element one end; There is a double-screw bolt coaxial with heat transfer element in this mechanism; This double-screw bolt passes the through hole of open card on the channel steel shape pressing plate on the end tube sheet, and the spring other end and the nut that are enclosed within on the outer double-screw bolt of pressing plate are adjacent.
5. inorganic heat transfer type anti-low-temperature corrosion air preheater according to claim 4 is characterized in that: heat pipe outer surface is provided with the fin of expansion heat-transfer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120445585XU CN202382622U (en) | 2011-11-11 | 2011-11-11 | Inorganic heat transfer type low-temperature corrosion prevention air preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120445585XU CN202382622U (en) | 2011-11-11 | 2011-11-11 | Inorganic heat transfer type low-temperature corrosion prevention air preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202382622U true CN202382622U (en) | 2012-08-15 |
Family
ID=46631119
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120445585XU Expired - Fee Related CN202382622U (en) | 2011-11-11 | 2011-11-11 | Inorganic heat transfer type low-temperature corrosion prevention air preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202382622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327869A (en) * | 2017-07-04 | 2017-11-07 | 江苏东方成套设备制造集团有限公司 | A kind of heat pipe preheater |
-
2011
- 2011-11-11 CN CN201120445585XU patent/CN202382622U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107327869A (en) * | 2017-07-04 | 2017-11-07 | 江苏东方成套设备制造集团有限公司 | A kind of heat pipe preheater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203963992U (en) | Enamel plate type air preheater | |
| CN201517894U (en) | Industrial furnace combustion smoke waste heat recycling system suitable for fuel oil work conditions | |
| CN104197306A (en) | Boiler fuel gas waste heat recovery system | |
| CN105402760A (en) | Fluoroplastic-steel air preheater with anti-corrosive and anti-blockage functions | |
| CN201462895U (en) | Anti-corrosion and wear-resistant air preheater | |
| CN201517893U (en) | Industrial furnace combustion smoke waste heat recycling system suitable for fuel gas work conditions | |
| CN106641580A (en) | Connection device and method of anti-corrosion tube sheet heat exchanger | |
| CN202382622U (en) | Inorganic heat transfer type low-temperature corrosion prevention air preheater | |
| CN104406185A (en) | Boiler smoke gas cascade afterheat recovery energy-saving device | |
| CN203907660U (en) | Heat tube air preheater | |
| CN206001919U (en) | Ultra-low NOx emission environmental protection and energy saving tubular heater | |
| CN203550637U (en) | Plate-type preheating device for aluminum-fusing shaft furnace | |
| CN202141326U (en) | Flue heat exchange device for tunnel kiln | |
| CN202770273U (en) | Heat exchanger | |
| CN111238247A (en) | Ascending pipe for recovering waste heat of coke oven crude gas and method for utilizing waste heat of ascending pipe | |
| CN203744749U (en) | Flue gas waste heat exchanger | |
| CN103884196B (en) | A kind of smoke gas afterheat heat exchanger and retracting device | |
| CN205481040U (en) | Pitch smoke and dust processing apparatus | |
| CN204372887U (en) | A kind of residual heat from boiler fume recycling system | |
| CN104534894A (en) | Conversion and utilization system of flue gas waste heat resources | |
| CN202915395U (en) | Built-in flue plate type preheater | |
| CN103185350A (en) | Glass tube air preheater | |
| CN202390463U (en) | Gas and air synchronous double preheating system provided with auxiliary combustion furnace | |
| CN204268911U (en) | Ceramics plate type air preheater | |
| CN104329684A (en) | Method and device for reducing exhaust gas temperature |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20151111 |
|
| EXPY | Termination of patent right or utility model |