CN107860225A - A kind of U-shaped heat transfer coils heating furnace - Google Patents
A kind of U-shaped heat transfer coils heating furnace Download PDFInfo
- Publication number
- CN107860225A CN107860225A CN201711146714.3A CN201711146714A CN107860225A CN 107860225 A CN107860225 A CN 107860225A CN 201711146714 A CN201711146714 A CN 201711146714A CN 107860225 A CN107860225 A CN 107860225A
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- China
- Prior art keywords
- heat transfer
- transfer coils
- wall
- burner
- heating furnace
- 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
- 238000010438 heat treatment Methods 0.000 title claims abstract description 25
- 238000002485 combustion reaction Methods 0.000 claims abstract description 17
- 238000003032 molecular docking Methods 0.000 claims abstract description 4
- 230000003628 erosive effect Effects 0.000 abstract description 5
- 230000003134 recirculating effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000004939 coking Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004227 thermal cracking Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any preceding group
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention discloses a kind of U-shaped heat transfer coils heating furnace, the heating furnace includes furnace wall, combustion bottom burner, radiant wall burner, heat transfer coils and support tube；Furnace wall is rectangular configuration, and its top is provided with discharge flue, and combustion bottom burner and radiant wall burner are arranged in the bottom surface and side of furnace wall, while the air inside furnace wall is heated；The form that heat transfer coils helically rise is fixed in furnace wall by support tube, individual layer heat transfer coils are to U-shape structure, to being formed to U-shape structure by two U-shaped semi-ring elbows and two horizontal segment coil pipe docking, the bottom of heat transfer coils is oil inlet, and top is oil-out.Heat transfer coils in heating furnace of the present invention are used to being designed to U-shaped formula helical structure, by the min. turning radius of the U-shaped heat transfer coils of reasonable selection, are slowed down erosion wear of the medium in turning recirculating zone to boiler tube, are improved the security of equipment operation.
Description
Technical field
The present invention relates to a kind of tubular heater, and in particular to a kind of heating furnace of the spiral heat transfer coils of band, belongs to stone
Oil refining, petrochemical industry and chemistry, chemical fibre industry, coal chemical industry, coal liquifaction firing equipment technical field.
Background technology
Tubular heater is the work used in petroleum refining, petrochemical industry and chemistry, chemical fibre industry, coal chemical industry, coal liquifaction
Skill heating furnace, for heated material in stove Bottomhole pressure, heated material is gas, liquid and the gas-liquid-solid three containing solid particle
Phase medium.And these media are all inflammable and explosive materials, dangerous big, operating condition is harsh.The mode of heating is direct
By fire, fuel uses liquid or gaseous fuel, while requires that long period is continuously run.
Due to technological requirement, the heating furnace in some processing unit (plant)s, the medium heated contains solid particle, but boiler tube is adopted
Structure is continuous U-tube, for long boiler tube of trying one's best of being arranged in limited furnace cavity, the radius of turn of U-tube
All very littles, unreasonable due to structure design, there is erosion wear phenomenon in boiler tube, causes boiler tube explosion that security incident easily occurs,
So as to influence equipment safety operation.
Coking is that after more than certain temperature boundary thermal cracking occurs for the medium in boiler tube, becomes free carbon, is deposited in pipe
Phenomenon on inwall.Coking steeply rises tube wall temperature, exacerbates corrosion and the high-temperature oxydation of boiler tube, cause boiler tube bulge,
Rupture, while overpressure drop is added, make furnace maneuver penalty, cause device to be stopped work, influence long period operation.
The content of the invention
In view of this, the invention provides a kind of U-shaped heat transfer coils heating furnace, heat transfer coils in the heating furnace using pair
Designed to U-shaped formula helical structure, by the min. turning radius of the U-shaped heat transfer coils of reasonable selection, slow down medium in backflow of turning
Area improves the security that equipment is run to the erosion wear of boiler tube.
A kind of U-shaped heat transfer coils heating furnace, the heating furnace include furnace wall, combustion bottom burner, radiant wall burner, heat transfer coils
And support tube；
The furnace wall is rectangular configuration, and its top is provided with discharge flue, and combustion bottom burner and radiant wall burner are respectively arranged
Heated in the bottom surface of furnace wall and side, while to the air inside furnace wall；The form that the heat transfer coils helically rise passes through
Support tube is fixed in furnace wall, individual layer heat transfer coils be to U-shape structure, to U-shape structure by two U-shaped semi-ring elbows and two
The docking of root horizontal segment coil pipe forms, and the bottom of heat transfer coils is oil inlet, and top is oil-out.
Further, the min. turning radius R >=6 times tube pitch of the heat transfer coils, tube pitch are that heat transfer coils are adjacent
The half of two pipeline centre-to-centre spacing.
Further, the caloric value allocation proportion of the combustion bottom burner and radiant wall burner is 7:3.
Beneficial effect：
1st, heating furnace radiating furnace tube of the invention is used to U-shaped formula heat transfer coils structure design, U-shaped heat transfer coils are most
The tube pitch of tight turn radius R >=6 times, slow down erosion wear of the medium in boiler tube turning recirculating zone, improve equipment operation
Security.
2nd, heating furnace of the present invention uses bottom+lateral wall type combined burning technology, and heat transfer coils are made coil pipe by double-side radiation heat
It is heated evenly, can effectively reduces and slow down the coking rate of heating medium, improves the stability of equipment long-term operation.Using
The being heated evenly property of double-side radiation technology heat transfer coils is traditional single side radiation by 1.5 times of hot coil.Equal conditions lower coil pipe
Usable floor area it is few, investment it is low.
3rd, burner for heating furnace of the invention burns combining form using bottom burning+side, and caloric value allocation proportion is 7:3, pass through
Combined type burns, and burner can form distributing combustion efficiency, reaches sublevel sectional combustion, reduces burning calorific intensity, so as to
The growing amount of thermal NO is effectively reduced, reduces the discharge of pollutant.
Brief description of the drawings
Fig. 1 is the overall structure front view of the present invention；
Fig. 2 is the overall structure side view of the present invention；
Fig. 3 is the overall structure top view of the present invention；
Fig. 4 is the U-shaped coil arrangement schematic diagram of the present invention；
Fig. 5 is Fig. 4 A-A sectional views.
Wherein, 1- furnace walls, 2- combustion bottom burners, 3- radiant wall burners, 4- heat transfer coils, 5- support tubes, 6- oil inlets, 7-
Oil-out.
Embodiment
The present invention will now be described in detail with reference to the accompanying drawings and examples.
As shown in accompanying drawing 1,2 and 3, the invention provides a kind of U-shaped heat transfer coils heating furnace, the heating furnace include furnace wall 1,
Combustion bottom burner 2, radiant wall burner 3, heat transfer coils 4 and support tube 5；
The furnace wall 1 is rectangular configuration, and its top is provided with discharge flue, and combustion bottom burner 2 and radiant wall burner 3 distinguish cloth
Put in the bottom surface of furnace wall 1 and side, combustion bottom burner 2 and radiant wall burner 3 are using the fuel combustion being externally supplied while to stove
Air heating inside wall 1；The form that the heat transfer coils 4 helically rise is fixed in furnace wall 1 by support tube 5, heat transfer
The bottom of coil pipe is oil inlet, and top is oil-out, and crude oil is flowed by oil inlet into heat transfer coils along pipeline, in furnace wall
High temperature air and heat radiation crude oil is passed to by the tube wall of heat transfer coils so that the temperature of crude oil rises to design temperature,
Crude oil after heating finally flows out from oil-out 7；As shown in figs. 4 and 5, individual layer heat transfer coils are to U-shape structure, to U
Type structure is formed by two U-shaped semi-ring elbows and two horizontal segment coil pipe docking.
Min. turning radius R >=6 times the tube pitch of the heat transfer coils 4, tube pitch are in adjacent two pipeline of heat transfer coils
The heart away from half.Erosion wear of the medium in boiler tube turning recirculating zone can be slowed down using said structure parameter, improved
The security of equipment operation.
The caloric value allocation proportion of the combustion bottom burner 2 and radiant wall burner 3 is 7:3, combustion intensity is reduced, reduces heat
The growing amount of power type nitrogen oxides, reduces the discharge of pollutant, environmental protection, reaches the purpose of energy-saving and emission-reduction.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (3)
1. a kind of U-shaped heat transfer coils heating furnace, the heating furnace include furnace wall, combustion bottom burner, radiant wall burner, heat transfer coils and
Support tube；
The furnace wall is rectangular configuration, and its top is provided with discharge flue, and combustion bottom burner and radiant wall burner are arranged in stove
The bottom surface and side of wall, while the air inside furnace wall is heated；Characterized in that, the shape that the heat transfer coils helically rise
Formula is fixed in furnace wall by support tube, and individual layer heat transfer coils are to U-shape structure, to curved by two U-shaped semi-rings to U-shape structure
Head and two horizontal segment coil pipe docking form, and the bottom of heat transfer coils is oil inlet, and top is oil-out.
2. U-shaped heat transfer coils heating furnace as claimed in claim 1, it is characterised in that the minimum of the heat transfer coils is turned partly
Footpath R >=6 times tube pitch, tube pitch are the half of the adjacent two pipelines centre-to-centre spacing of heat transfer coils.
3. U-shaped heat transfer coils heating furnace as claimed in claim 1, it is characterised in that the combustion bottom burner and side wall burning
The caloric value allocation proportion of device is 7:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146714.3A CN107860225A (en) | 2017-11-17 | 2017-11-17 | A kind of U-shaped heat transfer coils heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711146714.3A CN107860225A (en) | 2017-11-17 | 2017-11-17 | A kind of U-shaped heat transfer coils heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107860225A true CN107860225A (en) | 2018-03-30 |
Family
ID=61702142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711146714.3A Pending CN107860225A (en) | 2017-11-17 | 2017-11-17 | A kind of U-shaped heat transfer coils heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107860225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878218A (en) * | 2018-09-06 | 2020-03-13 | 中国石化工程建设有限公司 | Method for heating delayed coking raw material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106038Y (en) * | 2007-11-06 | 2008-08-27 | 上海奥韦通工程技术有限公司 | Asphalt flat-jet heating furnace |
| CN101982524A (en) * | 2010-11-23 | 2011-03-02 | 中国石油化工股份有限公司 | Delayed coking furnace |
| CN202229580U (en) * | 2011-09-26 | 2012-05-23 | 高捷 | Multistage wall-attached combustion box type furnace |
| CN103063028A (en) * | 2012-12-17 | 2013-04-24 | 北京石油化工工程有限公司 | Double-sided radiation spiral pipe heating furnace |
| CN207585343U (en) * | 2017-11-17 | 2018-07-06 | 北京拓首能源科技股份有限公司 | A kind of U-shaped heat transfer coils heating furnace |
-
2017
- 2017-11-17 CN CN201711146714.3A patent/CN107860225A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201106038Y (en) * | 2007-11-06 | 2008-08-27 | 上海奥韦通工程技术有限公司 | Asphalt flat-jet heating furnace |
| CN101982524A (en) * | 2010-11-23 | 2011-03-02 | 中国石油化工股份有限公司 | Delayed coking furnace |
| CN202229580U (en) * | 2011-09-26 | 2012-05-23 | 高捷 | Multistage wall-attached combustion box type furnace |
| CN103063028A (en) * | 2012-12-17 | 2013-04-24 | 北京石油化工工程有限公司 | Double-sided radiation spiral pipe heating furnace |
| CN207585343U (en) * | 2017-11-17 | 2018-07-06 | 北京拓首能源科技股份有限公司 | A kind of U-shaped heat transfer coils heating furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110878218A (en) * | 2018-09-06 | 2020-03-13 | 中国石化工程建设有限公司 | Method for heating delayed coking raw material |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180330 |