CN207585343U - A kind of U-shaped heat transfer coils heating furnace - Google Patents
A kind of U-shaped heat transfer coils heating furnace Download PDFInfo
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- CN207585343U CN207585343U CN201721542069.2U CN201721542069U CN207585343U CN 207585343 U CN207585343 U CN 207585343U CN 201721542069 U CN201721542069 U CN 201721542069U CN 207585343 U CN207585343 U CN 207585343U
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Abstract
The utility model discloses a kind of U-shaped heat transfer coils heating furnace, which includes furnace wall, combustion bottom burner, radiant wall burner, heat transfer coils and support tube；Furnace wall is rectangular configuration, and top is equipped 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 on by support tube in furnace wall, individual layer heat transfer coils are opposite U-shaped structure, opposite U-shaped structure is docked by two U-shaped semi-ring elbows and two horizontal segment coil pipes, and the bottom end of heat transfer coils is oil inlet, and top is oil outlet.Heat transfer coils in the utility model heating furnace, by reasonably selecting the min. turning radius of U-shaped heat transfer coils, are slowed down erosion wear of the medium in turning recirculating zone to boiler tube, improve the safety of equipment operation using opposite U-shaped formula helical structure design.
Description
Technical field
The utility model is related to a kind of tubular heaters, and in particular to a kind of heating furnace of the spiral heat transfer coils of band belongs to
In petroleum refining, petrochemical industry and chemistry, chemical fibre industry, coal chemical industry, coal liquifaction heating 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 substances, dangerous big, operating condition is harsh.The mode of heating is direct
By fire, fuel uses liquid or gaseous fuel, while requires long period continuous operation.
Due to technological requirement, the heating furnace in some processing unit (plant)s, added hot medium contains solid particle, but boiler tube is adopted
Structure is continuous U-tube, for boiler tube long as possible of arranging in limited furnace cavity, the turning radius of U-tube
All very littles, unreasonable due to structure design, there is erosion wear phenomenon in boiler tube, causes boiler tube explosion that safety accident 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
The phenomenon that on inner wall.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 increased, make furnace maneuver penalty, device is caused to be stopped work, influence long period operation.
Utility model content
In view of this, the utility model provides a kind of U-shaped heat transfer coils heating furnace, and the heat transfer coils in the heating furnace are adopted
It is designed with opposite U-shaped formula helical structure, by reasonably selecting the min. turning radius of U-shaped heat transfer coils, slows down medium and turning
Recirculating zone improves the safety of equipment operation 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 top is equipped with discharge flue, and combustion bottom burner and radiant wall burner are respectively arranged
It is 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, and individual layer heat transfer coils are opposite U-shaped structure, and opposite U-shaped structure is by two U-shaped semi-ring elbows and two
Root horizontal segment coil pipe docks, and the bottom end of heat transfer coils is oil inlet, and top is oil outlet.
Further, the min. turning radius R >=6 times tube pitch of the heat transfer coils, tube pitch are adjacent for heat transfer coils
The half of two pipeline centre-to-centre spacing.
Further, the calorific value allocation proportion of the combustion bottom burner and radiant wall burner is 7:3.
Advantageous effect：
1st, the heating furnace radiating furnace tube of the utility model is using opposite U-shaped formula heat transfer coils structure design, U-shaped heat transfer coils
Min. turning radius R >=6 times tube pitch, slow down medium boiler tube turning recirculating zone erosion wear, improve equipment fortune
Capable safety.
2nd, the utility model heating furnace uses bottom+lateral wall type combined burning technology, and heat transfer coils are made by double-side radiation heat
Heated coil is uniform, can effectively reduce and slow down the coking rate of heat medium, improves the stability of equipment long-term operation.
Being heated evenly property using double-side radiation technology heat transfer coils is traditional single side radiation by 1.5 times of hot coil.Under equal conditions
The usable floor area of coil pipe is few, and investment is low.
3rd, the burner for heating furnace of the utility model burns combining form using bottom burning+side, and calorific value allocation proportion is 7:3,
It being burnt by combined type, burner can form distributing combustion efficiency, reach sublevel sectional combustion, reduce burning calorific intensity, from
And the production quantity of thermal NO can be effectively reduced, reduce the discharge of pollutant.
Description of the drawings
Fig. 1 is the overall structure front view of the utility model；
Fig. 2 is the overall structure side view of the utility model；
Fig. 3 is the overall structure vertical view of the utility model；
Fig. 4 is the U-shaped coil arrangement schematic diagram of the utility model；
Fig. 5 is the A-A sectional views of Fig. 4.
Wherein, 1- furnace walls, 2- combustion bottom burners, 3- radiant wall burners, 4- heat transfer coils, 5- support tubes, 6- oil inlets, 7-
Oil outlet.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
As shown in attached drawing 1,2 and 3, the utility model provides a kind of U-shaped heat transfer coils heating furnace, which includes stove
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 top is equipped with discharge flue, and combustion bottom burner 2 and radiant wall burner 3 distinguish cloth
It puts 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 on by support tube 5 in furnace wall 1, heat transfer
The bottom end of coil pipe is oil inlet, and top is oil outlet, and crude oil enters heat transfer coils along pipeline by oil inlet and flows, 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 rise of crude oil to design temperature,
Crude oil after heating is finally flowed out from oil outlet 7；As shown in figs. 4 and 5, individual layer heat transfer coils are opposite U-shaped structure, opposite U
Type structure is docked by two U-shaped semi-ring elbows and two horizontal segment coil pipes.
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.Parameter can slow down erosion wear of the medium in boiler tube turning recirculating zone using the above structure, improve
The safety of equipment operation.
The calorific value allocation proportion of the combustion bottom burner 2 and radiant wall burner 3 is 7:3, combustion intensity is reduced, reduces heat
The production quantity of power type nitrogen oxides, reduces the discharge of pollutant, and environmental protection achieves energy-saving and emission reduction purposes.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model
Protection domain.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all wrap
Containing being within the protection scope of the utility model.
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 top is equipped 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；It is characterized in that, the shape that the heat transfer coils helically rise
Formula is fixed on by support tube in furnace wall, and individual layer heat transfer coils are opposite U-shaped structure, and opposite U-shaped structure is curved by two U-shaped semi-rings
Head and two horizontal segment coil pipes dock, and the bottom end of heat transfer coils is oil inlet, and top is oil outlet.
2. U-shaped heat transfer coils heating furnace as described in claim 1, which is characterized in that the minimum turning half of the heat transfer coils
Diameter 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 described in claim 1, which is characterized in that the combustion bottom burner and side wall burning
The calorific value allocation proportion of device is 7:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721542069.2U CN207585343U (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 |
|---|---|---|---|
| CN201721542069.2U CN207585343U (en) | 2017-11-17 | 2017-11-17 | A kind of U-shaped heat transfer coils heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207585343U true CN207585343U (en) | 2018-07-06 |
Family
ID=62731956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721542069.2U Active CN207585343U (en) | 2017-11-17 | 2017-11-17 | A kind of U-shaped heat transfer coils heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207585343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860225A (en) * | 2017-11-17 | 2018-03-30 | 北京拓首能源科技股份有限公司 | A kind of U-shaped heat transfer coils heating furnace |
| 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 |
-
2017
- 2017-11-17 CN CN201721542069.2U patent/CN207585343U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860225A (en) * | 2017-11-17 | 2018-03-30 | 北京拓首能源科技股份有限公司 | A kind of U-shaped heat transfer coils heating furnace |
| 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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