CN202209888U - Central heat exchanger used for bright and annealing bell furnace - Google Patents
Central heat exchanger used for bright and annealing bell furnace Download PDFInfo
- Publication number
- CN202209888U CN202209888U CN2011202413852U CN201120241385U CN202209888U CN 202209888 U CN202209888 U CN 202209888U CN 2011202413852 U CN2011202413852 U CN 2011202413852U CN 201120241385 U CN201120241385 U CN 201120241385U CN 202209888 U CN202209888 U CN 202209888U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- housing
- bell furnace
- heat exchange
- gas outlet
- 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 - Lifetime
Links
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
Abstract
The utility model relates to a central heat exchanger used for a bright and annealing bell furnace, comprising a housing and several heat exchange tubes disposed in the internal of the housing, a flue gas inlet and a flue gas outlet are disposed on the housing, the flue gas inlet is disposed at the upper part of the housing, the flue gas outlet is disposed at the lower part of the housing, the air inlets and the air outlets of the several heat exchange tubes are disposed at one side of the housing, and the air inlets are disposed at the lower part of the air outlets, and the internal of the heat exchange tubes is provided with spiral sheets. The central heat exchanger is advantageous in that, the tube heat exchange structure is adopted, structure is simple, large heat transfer area of unit volume, heat exchange in a largest degree is performed between heat exhaust gas and fresh air; instead of being directly discharged to a workshop, the exhaust gas after heat exchange is forced downward by negative pressure to be collected to an underground exhaust gas discharge header pipe, reducing influence upon field work environment, and providing convenient installation and maintenance.
Description
Technical field
the utility model relates to the industrial annealing field in metallurgical the manufacturing, particularly relates to a kind of central heat exchanger that is used for the bright annealing bell furnace.
Background technology
along with industry develops rapidly, the steel market is for the high-quality band steel of demand cumulative year after year, the especially surface cleaning of cold-strip steel.A lot of large-scale iron and steel enterprises all adopt bell furnace that the band steel is carried out bright annealing at present, but when annealing with bell furnace, will produce great amount of high-temperature waste gas, will cause great energy waste if directly be disposed in the atmosphere, pollute the environment again simultaneously.A heat exchanger is installed on bell furnace, is utilized the heat of waste gas that fresh combustion air is carried out preheating, can significantly reduce gas consumption.
existing bell furnace heat exchanger mostly is combustion air preheaters that several parallel connections of circumferential distributed and arranged are used in the heat-insulation layer of the heating mantles top of bell type annealing furnace; The structure of its combustion air preheater is in a housing, to settle a finned sleeve pipe; Cannula cavity is an air duct; Annular chamber between sleeve pipe and the housing is an exhaust gases passes, is conducted heat by sleeve pipe and carries out heat exchange.This design heat exchanger effectiveness is low, and installs complicated.Improved afterwards technology is that some finned tubes are welded together, and with the area of increase heat exchange, but this way makes the structure of heat exchanger become complicated more, and the decline of the preheating uniformity, and installation and maintenance is difficulty relatively.
Summary of the invention
the utility model purpose provides a kind of central heat exchanger, the heat exchange of this central authorities' heat exchanger application high-temperature flue gas and combustion air in the bright annealing bell furnace.
For achieving the above object, the technical scheme that the utility model adopts is:
a kind of central heat exchanger that is used for the bright annealing bell furnace; Comprise housing, be arranged on some heat exchanger tubes of described enclosure interior; Offer smoke inlet, exhanst gas outlet on the described housing; Described smoke inlet is opened in described housing top, and described exhanst gas outlet is opened in described lower housing portion, and the air inlet of some described heat exchanger tubes, gas outlet are arranged on a side of described housing; And described air inlet is opened in the below of described gas outlet, is provided with flight in the described heat exchanger tube.
preferably, described shell inboard is provided with insulating lining.
further preferably, described insulating lining is a ceramic fibre.
preferably; The outer wall of described housing is provided with upper collecting chamber, next part case; Described upper collecting chamber offers air outlet slit; Described next part case offers air outlet slit, and described air intake is connected with described air inlet, and described air outlet slit is connected with described gas outlet.
preferably, the surface of described housing has four triangle blocks, the center of the housing that the angle of four described triangle blocks connects is outstanding laterally.
preferably, described heat exchanger tube is a stainless steel.
The design principle of the utility model is following:
The high-temperature waste flue gas that produces in
bell furnace heating anneal process is transported to central heat exchanger inside through useless smoke pipe road; With cryogenic media be after combustion air carries out heat exchange; Temperature reduces discharging again; Cryogenic media is redistributed to each burner after preheating, whole heat exchanging process is in the inner completion of central heat exchanger.
can both recycle through anneal cycles all flue gas and used heat, and this helps fully and rationally using the petrochemical industry combustion gas.This central heat exchanger is large-scale crosscurrent heat exchanger, has higher combustion air temperature and lower flue-gas temperature behind the air-flow process heat exchanger heat-shift, simultaneously long service life.The intact waste gas of heat exchange is forced to be collected into underground toxic emission house steward downwards through negative pressure, rather than directly is disposed to the workshop, has reduced the influence to the work on the spot environment.
Because the technique scheme utilization, the utility model compared with prior art has advantage and effect:
1, adopt the tubulose heat exchange structure, simple in structure, the unit volume heat transfer area is big, make between hot waste gas and cold fresh air to carry out maximum heat exchange;
2, the intact waste gas of heat exchange is forced to be collected into underground toxic emission house steward downwards through negative pressure, rather than directly is disposed to the workshop, has reduced the influence to the work on the spot environment;
3, convenient for installation and maintenance.
Description of drawings
Accompanying drawing 1 is the structural representation of the central heat exchanger of the utility model;
accompanying drawing 2 is the inside cross-sectional schematic of the central heat exchanger of the utility model.
wherein: 1, housing; 10, smoke inlet; 11, exhanst gas outlet; 12, upper collecting chamber; 120, air outlet slit; 13, next part case; 130, air intake; 14, triangle block; 2, insulating lining; 3, heat exchanger tube; 30, air inlet; 31, gas outlet.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
a kind of central heat exchanger that is used for the bright annealing bell furnace comprises housing 1, is arranged on the inner some heat exchanger tubes 3 of housing 1.Wherein:
are as shown in Figure 2: the air inlet 30 of some heat exchanger tubes 3, gas outlet 31 are arranged on a side of housing 1; And air inlet 30 is opened in the below of gas outlet 31; Carry out mouth 30 and be connected with air intake 130, gas outlet 31 is connected with air outlet slit 120.In addition, heat exchanger tube 3 is the heat-resistance stainless steel material, in heat exchanger tube 3, is provided with flight, and the flight unit of making heat transfer area is bigger, and heat transfer property is better.
Below the concrete course of work of present embodiment down of setting forth:
high-temperature waste flue gas gets into from the smoke inlet 10 on housing 1 top, passes through the outer tube wall of some heat exchanger tubes 3 from top to bottom in housing 1 inside; Cold air gets into the air inlet 30 of heat exchanger tube 3 through the air intake 130 of next part case 13; Cold air in the heat exchanger tube 3 from bottom to top progressively is heated; High-temperature waste flue gas sends heat in the heat exchanger tube 3 cold air; The preheat temperature of cold air can reach 380-420 ℃, and the air outlet slit 120 through upper collecting chamber 12 is transported to each burner to the air after the preheating from the gas outlet 31 of heat exchanger tube 3, carries out combustion-supporting; And the high-temperature waste flue gas after the heat exchange is collected the back discharging from the exhanst gas outlet 11 of housing 1 bottom.
are connected with a nitrogen control piper in smoke inlet of housing 1 10 and exhanst gas outlet 11 sides in addition, and pipeline is provided with an oxygen measurement system (residual oxygen appearance); Be used to control the oxygen content of smoke evacuation waste gas; The scope of oxygen content should be between 2.5%-3%, if go beyond the scope, system can feed back to the combustion air proportional control valve automatically; To obtain optimal air-fuel ratio, make full combustion of fuel.
the foregoing description is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the personage who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection domain of the utility model.
Claims (6)
1. central heat exchanger that is used for the bright annealing bell furnace; It is characterized in that: comprise housing, be arranged on some heat exchanger tubes of described enclosure interior; Offer smoke inlet, exhanst gas outlet on the described housing; Described smoke inlet is opened in described housing top, and described exhanst gas outlet is opened in described lower housing portion, and the air inlet of some described heat exchanger tubes, gas outlet are arranged on a side of described housing; And described air inlet is opened in the below of described gas outlet, is provided with flight in the described heat exchanger tube.
2. the central heat exchanger that is used for the bright annealing bell furnace according to claim 1 is characterized in that: described shell inboard is provided with insulating lining.
3. the central heat exchanger that is used for the bright annealing bell furnace according to claim 2 is characterized in that: described insulating lining is a ceramic fibre.
4. the central heat exchanger that is used for the bright annealing bell furnace according to claim 1; It is characterized in that: the outer wall of described housing is provided with upper collecting chamber, next part case; Described upper collecting chamber offers air outlet slit; Described next part case offers air outlet slit, and described air intake is connected with described air inlet, and described air outlet slit is connected with described gas outlet.
5. the central heat exchanger that is used for the bright annealing bell furnace according to claim 1 is characterized in that: the surface of described housing has four triangle blocks, and the center of the housing that the angle of four described triangle blocks connects is outstanding laterally.
6. the central heat exchanger that is used for the bright annealing bell furnace according to claim 1 is characterized in that: described heat exchanger tube is a stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202413852U CN202209888U (en) | 2011-07-11 | 2011-07-11 | Central heat exchanger used for bright and annealing bell furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202413852U CN202209888U (en) | 2011-07-11 | 2011-07-11 | Central heat exchanger used for bright and annealing bell furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202209888U true CN202209888U (en) | 2012-05-02 |
Family
ID=45989434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202413852U Expired - Lifetime CN202209888U (en) | 2011-07-11 | 2011-07-11 | Central heat exchanger used for bright and annealing bell furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202209888U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304615A (en) * | 2011-07-11 | 2012-01-04 | 艾伯纳工业炉(太仓)有限公司 | Central heat exchanger for bright annealing bell type furnace |
| CN105910446A (en) * | 2016-05-18 | 2016-08-31 | 李磊 | Heat exchange device for casting furnace |
| CN110220399A (en) * | 2019-06-28 | 2019-09-10 | 安徽盛博冶金环保科技有限公司 | A kind of air-tube type heat-exchanger rig |
-
2011
- 2011-07-11 CN CN2011202413852U patent/CN202209888U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304615A (en) * | 2011-07-11 | 2012-01-04 | 艾伯纳工业炉(太仓)有限公司 | Central heat exchanger for bright annealing bell type furnace |
| CN105910446A (en) * | 2016-05-18 | 2016-08-31 | 李磊 | Heat exchange device for casting furnace |
| CN110220399A (en) * | 2019-06-28 | 2019-09-10 | 安徽盛博冶金环保科技有限公司 | A kind of air-tube type heat-exchanger rig |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201988675U (en) | Full-countercurrent heat exchange two-stage waste sand casting roasting furnace | |
| CN102618681A (en) | Grate-free double-preheating top combustion type hot blast stove | |
| CN202182624U (en) | Energy-saving aluminium melting conjuncted furnace | |
| CN202209888U (en) | Central heat exchanger used for bright and annealing bell furnace | |
| CN200943945Y (en) | Coal gasified and burned environment-friendly hot water boiler | |
| CN104990256B (en) | A kind of environment-protection boiler | |
| CN205783059U (en) | A kind of double-stage heat exchanger on continuous belt steel annealing furnace | |
| CN202432680U (en) | Reverse gas fire pipe environment-friendly air heating furnace | |
| CN204006085U (en) | Flue gas waste heat recovery kitchen range | |
| CN102304615A (en) | Central heat exchanger for bright annealing bell type furnace | |
| CN206037690U (en) | Novel living beings cupola furnace | |
| CN201322564Y (en) | Air preheater | |
| CN208588082U (en) | Effective energy-saving vertical boiler | |
| CN203656965U (en) | Air preheating device of kiln | |
| CN207699460U (en) | Use the heat accumulating type sleeve kiln of fuel gas with low heat value lime burning | |
| CN206160478U (en) | Double -hearth violently manages shell and tube high -efficiency biological matter hot -blast furnace | |
| CN208431758U (en) | Industrial combustion gas is from heating energy-saving burner | |
| CN202056884U (en) | Air preheating type burner | |
| CN206755585U (en) | Organic heat carrier furnace | |
| CN206266647U (en) | Radiant tube is reduced directly shaft furnace | |
| CN205424911U (en) | Disconnect -type heat transfer combustor | |
| CN208833018U (en) | The direct-fired device of low-temperature flue gas in a kind of pair of pipeline | |
| CN202630393U (en) | Multi-stage convection indirect blast stove | |
| CN200972326Y (en) | Powder metallurigical one reduction tunner furnace using blast furnace gas as fuel | |
| CN101956995B (en) | Composite tube air preheater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120502 |