CN206257694U - A kind of segmented cast iron preheater - Google Patents
A kind of segmented cast iron preheater Download PDFInfo
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- CN206257694U CN206257694U CN201621276676.4U CN201621276676U CN206257694U CN 206257694 U CN206257694 U CN 206257694U CN 201621276676 U CN201621276676 U CN 201621276676U CN 206257694 U CN206257694 U CN 206257694U
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- segmented
- preheater
- cast iron
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- 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
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Abstract
The utility model provides a kind of segmented cast iron preheater, and the cast iron preheater includes segmented preheater body, segmented framework, airflow pipe, smoke conveying duct, air connecting tube road and flue gas connecting pipe；Every section of preheater body of the segmented preheater body is supported by every segment frames of the segmented framework, is formed as multiple standalone modules；The air side between the adjacent block of air draught direction is pressed in the air connecting tube road connection, forms the air side serial module structure group with air wing passage；The flue gas connecting pipe connection forms the fume side serial module structure group with flue gas wing passage by the fume side between the adjacent block of flue gas stream direction；The entrance of the air wing passage, outlet are respectively connected with the airflow pipe；The entrance of the flue gas wing passage, outlet are respectively connected with the smoke conveying duct.The cast iron preheater can carry out partial disassembly, change.
Description
Technical field
The utility model is related to waste heat of flue gas of heating furnace to reclaim preheater field, and in particular to a kind of segmented cast iron preheating
Device.
Background technology
In petrochemical plant, heating furnace is the energy ezpenditure rich and influential family of device, while being also the main next of fume emission
One of source.The fuel source of heating furnace is mainly the non-renewable fossil energy such as fuel oil, fuel gas, is produced by burning
Flue gas removes CO2、H2O and N2Outside, while also with NOXAnd SOXGeneration.Refining Chemical Industry is built after over half a century, China
Crude capacity is more than 500,000,000 tons/year.Gradually enhancing with the development and the mankind of science and technology to environmental protection consciousness, a lot
The energy consumption of active service heating furnace and discharge have turned into the emphasis of concern.
Flue gas waste heat recovery system is generally set in oil refining apparatus to improve the thermal efficiency of heating furnace, it is general pre- using air
Hot device realizes the heat exchange of heat smoke and cold air so as to reduce the exhaust gas temperature of heating furnace.Compared with conventional pre-heater, flue gas
When temperature is operated near dew-point temperature, plate-fin cast iron preheater has the longer online life-span, can show exhaust gas temperature
Writing reduces, and improves the furnace fuel thermal efficiency.
Cast iron preheater is direct-type preheater, is exchanged by the third medium with air with the flue gas of indirect type preheater
Heat is different, and fume side and the air side of cast iron preheater pass through cast iron plate direct heat transfer, flue gas and the perpendicular flowing shape of air
State is formed and exchanged heat compared with cross-current respectively by the both sides of cast iron plate.It is low temperature cold flue gas after warm flue gas heat release high, low temperature cold is empty
It is high-temperature hot air after aspiration heat, inlet of cold air and cold smoke gas outlet cast iron plate temperature are minimum, the easy shape of fume side cast iron plate
Easily deposit, be piled up in herein into low-temperature dew point corrosion, and dirt.When cold flue gas side cast iron plate occurs dew point corrosion until leaking,
Or after dirt blocking cast iron plate causes flue gas circulation area to reduce, cast iron type preheater need to be changed, but actually remove local corrosion
Outside leakage or local stoppages, remaining position of cast iron plate may continue to use.
Although plate-fin cast iron preheater shows good low temperature resistant dewpoint corrosion ability, due to device operation
Fluctuation, the inevitable sulfur-bearing of fuel, the ultimate attainment pursuit to reducing exhaust gas temperature can all cause plate-fin cast-iron air preheater
Local corrosion.Therefore, need that offer is a kind of can to improve the thermal efficiency of heating furnace badly, while being easy to local dismounting and maintenance again
Cast iron preheater.
Utility model content
The purpose of this utility model is the drawbacks described above for overcoming prior art, there is provided a kind of segmented cast iron preheater,
The segmented cast iron preheater can realize local dismounting and replacing, it is to avoid preheater because of local damage, made by overall scrapping
Into the wasting of resources.
The solution that the utility model is used is as follows：
The utility model provides a kind of segmented cast iron preheater, and the segmented cast iron preheater includes segmented preheater
Body, segmented framework, airflow pipe, smoke conveying duct, air connecting tube road and flue gas connecting pipe；
Wherein, every segment frames that every section of preheater body of the segmented preheater body passes through the segmented framework
Support, is formed as multiple standalone modules；
The air side between the adjacent block of air draught direction is pressed in the air connecting tube road connection, and being formed has air side
The air side serial module structure group of passage；The flue gas connecting pipe connection is by the flue gas between the adjacent block of flue gas stream direction
Side, forms the fume side serial module structure group with flue gas wing passage；
The entrance of the air wing passage, outlet are respectively connected with the airflow pipe；The flue gas wing passage
Entrance, outlet are respectively connected with the smoke conveying duct.
Preferably, the segmented framework is made up of segmented column and cross frame, and high-strength spiral shell is passed through between every section of column
Bolt, web connecting plate and edge of a wing connecting plate strong ties.
Preferably, the segmented cast iron preheater includes：At least one set of air side serial module structure group and at least one set of cigarette
Gas side serial module structure group.
Preferably, the segmented cast iron preheater includes：Multigroup air side serial module structure group in parallel and multigroup parallel connection
Fume side serial module structure group.
Preferably, the segmented cast iron preheater includes：One group of air side serial module structure group and one group of fume side series connection
Module group.
Preferably, the airflow pipe is provided with least one interface with the channel attached one end of air side.
Preferably, the airflow pipe is provided with multiple interfaces, the interface with the channel attached one end of air side
Quantity it is consistent with the quantity in parallel of air side serial module structure group.
Preferably, the smoke conveying duct is provided with least one interface with the channel attached one end of fume side.
Preferably, the smoke conveying duct is provided with multiple interfaces, the interface with the channel attached one end of fume side
Quantity it is consistent with the quantity in parallel of fume side serial module structure group.
Preferably, the segmented preheater body, segmented framework, airflow pipe, smoke conveying duct, air
Bolt connection is between connecting pipe and flue gas connecting pipe.
The module thinking that the utility model is formed with zoning, by cold flue gas side it is perishable, it is easy leakage and it is susceptible to plugging
Region carries out independent design, so as to provide a kind of segmented cast iron preheater.Cast iron preheater of the present utility model can carry out office
Portion's dismounting, change, make that preheater is sustainable to ensure thermal efficiency of heating furnace in run at high level, it is to avoid preheater is because of local damage
Entirety scraps the caused wasting of resources.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
The utility model illustrative embodiments are described in more detail by with reference to accompanying drawing, it is of the present utility model on
State and other purposes, feature and advantage will be apparent.
Fig. 1 is a kind of structure chart of the segmented cast iron preheater of specific embodiment of the present utility model.
Fig. 2 is the disassembly diagram of segmented cast iron preheater shown in Fig. 1.
Fig. 3 is the structure chart of segmented framework in segmented cast iron preheater shown in Fig. 1.
Fig. 4 is a kind of exemplary local replacing structure chart of segmented cast iron preheater shown in Fig. 1.
Fig. 5 is the structure chart of the segmented cast iron preheater of the utility model another kind specific embodiment.
Fig. 6 is the node diagram of segmented framework in a kind of preferred embodiment of the present utility model.
Description of reference numerals
1st, segmented preheater body；2nd, segmented framework；3rd, airflow pipe；4th, smoke conveying duct；5th, air
Connecting pipe；6th, flue gas connecting pipe.
Specific embodiment
Preferred embodiment of the present utility model is more fully described below with reference to accompanying drawings.Although showing this in accompanying drawing
The preferred embodiment of utility model, however, it is to be appreciated that may be realized in various forms the utility model without should be by here
The implementation method of elaboration is limited.Conversely, these embodiments are provided so that the utility model is more thorough and complete, and
And scope of the present utility model can intactly be conveyed to those skilled in the art.
According to exemplary segmented cast iron preheater, as shown in Fig. 1 or Fig. 5, the segmented cast iron preheater includes dividing
Segmentation preheater body 1, segmented framework 2, airflow pipe 3, smoke conveying duct 4, air connecting tube road 5 and flue gas connect
Adapter road 6；
Wherein, every section of frame that every section of preheater body of the segmented preheater body 1 passes through the segmented framework 2
Frame is supported, and is formed as multiple standalone modules；
The air connecting tube road 5 connects the air side pressed between the adjacent block of air draught direction, and being formed has air
The air side serial module structure group of wing passage；The connection of flue gas connecting pipe 6 is by the cigarette between the adjacent block of flue gas stream direction
Gas side, forms the fume side serial module structure group with flue gas wing passage；
The entrance of the air wing passage, outlet are respectively connected with the airflow pipe 3；The flue gas wing passage
Entrance, outlet are respectively connected with the smoke conveying duct 4.
According to the utility model, the segmented column is segmented according to the segmentation of segmented preheater body.It is described
Segmented framework matches with segmented preheater body, when installing segmented cast iron preheater, can be somebody's turn to do according to support is first installed
The framework of section preheater body, then complete the principle of this section of preheater body and installed successively.By strong between every section of column
Connect to ensure frame strength.
As preferred embodiment, as shown in figure 3, the segmented framework 2 can be by segmented column and cross frame group
Into；As shown in fig. 6, passing through high-strength bolt, web connecting plate and edge of a wing connecting plate strong ties between every section of column.
According to the utility model, the segmented cast iron preheater includes：At least one set of air side serial module structure group and extremely
Few one group of fume side serial module structure group.The quantity of air side serial module structure group and fume side serial module structure group can be entered as needed
Row is set.
Used as preferred embodiment, the segmented cast iron preheater includes：Multigroup air side serial module structure in parallel
Group and multigroup fume side serial module structure group in parallel.
Used as preferred embodiment, the segmented cast iron preheater includes：One group of air side serial module structure group and one
Group fume side serial module structure group.
In addition, the segmented cast iron preheater can include：One group of air side serial module structure group and multigroup cigarette in parallel
Gas side serial module structure group.
Or, the segmented cast iron preheater can include：Multigroup air side serial module structure group in parallel and one group of cigarette
Gas side serial module structure group.
In the utility model, " multigroup " refers to more than two.
According to the utility model, the effect of the airflow pipe 3 is to connect the air side of segmented cast iron preheater
It is connected in the air channel of waste heat recovery system of heating furnace, therefore, one end of the airflow pipe 3 and the entrance of air wing passage
Or outlet is connected, the other end is connected with the air channel of the waste heat recovery system of heating furnace.
According to the utility model, the airflow pipe 3 is provided with least one with the channel attached one end of air side
Interface.The quantity of the interface can be determined according to the group number of the air side serial module structure group.
Used as a kind of preferred embodiment, the airflow pipe 3 can set with the channel attached one end of air side
Multiple interfaces are equipped with, the quantity of the interface is consistent with the quantity in parallel of air side serial module structure group.
According to the utility model, the effect of the smoke conveying duct 4 is to connect the fume side of segmented cast iron preheater
It is connected in the flue of waste heat recovery system of heating furnace, therefore, one end of the smoke conveying duct 4 and the entrance of flue gas wing passage
Or outlet is connected, the other end is connected with the flue of the waste heat recovery system of heating furnace.
According to the utility model, the smoke conveying duct 4 is provided with least one with the channel attached one end of fume side
Interface.The quantity of the interface can be determined according to the group number of the fume side serial module structure group.
Used as a kind of preferred embodiment, the smoke conveying duct 4 can set with the channel attached one end of fume side
Multiple interfaces are equipped with, the quantity of the interface is consistent with the quantity in parallel of fume side serial module structure group.
As preferred embodiment, the segmented preheater body 1, segmented framework 2, airflow pipe 3, cigarette
It is connected by screw bolts between letter shoot road 4, air connecting tube road 5 and flue gas connecting pipe 6；So, installing or overhauling
During be easy to execute-in-place, with stronger flexibility.
In the utility model, the segmented cast iron preheater can realize that segmentation is installed, dismantled, in preheater local damage
When, section displacing can be carried out.In specific implementation process, the segmented framework 2 is in the local replacing of segmented preheater body 1
When, can directly be changed framework overall structure is not dismantled, it is also possible to dismantle framework paragraph by paragraph, pacify paragraph by paragraph after after preheater replacing
Dress.
The utility model is described in detail below by embodiment, but the utility model should not be limited by the examples.
Embodiment 1
As depicted in figs. 1 and 2, every section of preheater body of the segmented preheater body 1 is by the segmented frame
Every segment frames support of frame 2, is formed as 4 standalone modules.
As shown in figure 3, the segmented framework 2 divides according to the segmentation situation of segmented preheater body 1 in short transverse
It is three sections, is installed with the segmentation for coordinating preheater body.
Segmented cast iron preheater includes two groups of air side serial module structure groups in parallel and two groups of fume side series connection in parallel
Module group, air side serial module structure group and fume side serial module structure group include two modules respectively.Flue gas from up to down vertical current
Dynamic, air bottom horizontal flow sheet, fume side, air side are a tube side.
One end of airflow pipe 3 has the interface that is connected with waste heat recovery system of heating furnace air channel, other end tool
There are two interfaces being connected with the entrance of air wing passage, outlet.One end of smoke conveying duct 4 has to be returned with heating furnace waste heat
Receipts system flue is connected an interface, and the other end has two interfaces being connected with the entrance of flue gas wing passage, outlet.
Segmented framework 2, using substitute mode as shown in Figure 4, is not being dismantled when segmented preheater body 1 is changed
Frame structure is directly changed.
Embodiment 2
As shown in figure 5, the segmented preheater body 1 includes two standalone modules.Segmented framework 2 is according to segmented
The segmentation situation of preheater body 1 is divided into three sections in short transverse, is installed with the segmentation for coordinating preheater body.
Segmented cast iron preheater includes one group of air side serial module structure group and one group of fume side serial module structure group, air side
Serial module structure group and fume side serial module structure group include two modules respectively.Flue gas from up to down perpendicular flow, air level stream
Dynamic, fume side is a tube side, air side is two tube sides.
One end of airflow pipe 3 has the interface that is connected with waste heat recovery system of heating furnace air channel, other end tool
There is an interface being connected with the entrance of air wing passage, outlet.One end of smoke conveying duct 4 has to be returned with heating furnace waste heat
Receipts system flue is connected an interface, and the other end has an interface being connected with the entrance of flue gas wing passage, outlet.
Segmented cast iron preheater can carry out partial disassembly and replacing, and flexibility is strong, convenient maintenance.
It is described above embodiment of the present utility model, described above is exemplary, and non-exclusive, and
It is also not necessarily limited to disclosed embodiment.In the case of the scope and spirit without departing from illustrated embodiment, led for this technology
Many modifications and changes will be apparent from for the those of ordinary skill in domain.
Claims (10)
1. a kind of segmented cast iron preheater, it is characterised in that the segmented cast iron preheater includes segmented preheater body
(1), segmented framework (2), airflow pipe (3), smoke conveying duct (4), air connecting tube road (5) and flue gas connecting tube
Road (6)；
Wherein, every section of frame that every section of preheater body of the segmented preheater body (1) passes through the segmented framework (2)
Frame is supported, and is formed as multiple standalone modules；
The air side between the adjacent block of air draught direction is pressed in air connecting tube road (5) connection, and being formed has air side
The air side serial module structure group of passage；Flue gas connecting pipe (6) connection is by the cigarette between the adjacent block of flue gas stream direction
Gas side, forms the fume side serial module structure group with flue gas wing passage；
The entrance of the air wing passage, outlet are respectively connected with the airflow pipe (3)；The flue gas wing passage enters
Mouth, outlet are respectively connected with the smoke conveying duct (4).
2. segmented cast iron preheater according to claim 1, it is characterised in that the segmented framework (2) is by being segmented
Formula column and cross frame are constituted, and high-strength bolt, web connecting plate and edge of a wing connecting plate strong ties are passed through between every section of column.
3. segmented cast iron preheater according to claim 1, it is characterised in that the segmented cast iron preheater bag
Include：At least one set of air side serial module structure group and at least one set of fume side serial module structure group.
4. segmented cast iron preheater according to claim 1, it is characterised in that the segmented cast iron preheater bag
Include：Multigroup air side serial module structure group in parallel and multigroup fume side serial module structure group in parallel.
5. segmented cast iron preheater according to claim 1, it is characterised in that the segmented cast iron preheater bag
Include：One group of air side serial module structure group and one group of fume side serial module structure group.
6. segmented cast iron preheater according to claim 1, it is characterised in that the airflow pipe (3) with it is empty
One end of gas wing passage connection is provided with least one interface.
7. segmented cast iron preheater according to claim 4, it is characterised in that the airflow pipe (3) with it is empty
One end of gas wing passage connection is provided with multiple interfaces, the quantity of the interface and the quantity in parallel one of air side serial module structure group
Cause.
8. segmented cast iron preheater according to claim 1, it is characterised in that the smoke conveying duct (4) and cigarette
One end of gas wing passage connection is provided with least one interface.
9. segmented cast iron preheater according to claim 4, it is characterised in that the smoke conveying duct (4) and cigarette
One end of gas wing passage connection is provided with multiple interfaces, the quantity of the interface and the quantity in parallel one of fume side serial module structure group
Cause.
10. segmented cast iron preheater according to claim 1, it is characterised in that the segmented preheater body
(1), segmented framework (2), airflow pipe (3), smoke conveying duct (4), air connecting tube road (5) and flue gas connecting tube
Road is bolt connection between (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276676.4U CN206257694U (en) | 2016-11-23 | 2016-11-23 | A kind of segmented cast iron preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621276676.4U CN206257694U (en) | 2016-11-23 | 2016-11-23 | A kind of segmented cast iron preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206257694U true CN206257694U (en) | 2017-06-16 |
Family
ID=59027458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621276676.4U Active CN206257694U (en) | 2016-11-23 | 2016-11-23 | A kind of segmented cast iron preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206257694U (en) |
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2016
- 2016-11-23 CN CN201621276676.4U patent/CN206257694U/en active Active
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