CN204325235U - A kind of ethane cracking furnace 4-3-1 type radiating furnace tube - Google Patents
A kind of ethane cracking furnace 4-3-1 type radiating furnace tube Download PDFInfo
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- CN204325235U CN204325235U CN201420678404.1U CN201420678404U CN204325235U CN 204325235 U CN204325235 U CN 204325235U CN 201420678404 U CN201420678404 U CN 201420678404U CN 204325235 U CN204325235 U CN 204325235U
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Abstract
The utility model provides a kind of ethane cracking furnace 4-3-1 type radiating furnace tube, belongs to pyrolyzer field.This device comprises the first journey boiler tube, the second journey boiler tube and the 3rd journey boiler tube; Described first journey boiler tube comprises four boiler tubes, and the second journey boiler tube comprises three boiler tubes, and the 3rd journey boiler tube comprises a boiler tube; One end of first journey boiler tube is connected with one end of 4-3 type pipe fitting, and the other end of 4-3 type pipe fitting is connected with one end of U-tube, and one end of the other end transition conduit of U-tube connects, and the other end of transition conduit is connected with one end of the second journey boiler tube; The other end of the second journey boiler tube is connected with one end of three-in-one pipe fitting, and the other end of three-in-one pipe fitting is connected with the one end across pipe, and the other end across pipe is connected with one end of the 3rd journey boiler tube; The opening end of described first journey boiler tube is positioned at the top, and the opening end of described 3rd journey boiler tube is positioned at bottom.
Description
Technical field
The utility model belongs to pyrolyzer field, is specifically related to a kind of ethane cracking furnace 4-3-1 type radiating furnace tube.
Background technology
The radiant coil that in petrochemical complex ethylene unit, ethane cracking furnace extensively adopts is configured as two journey boiler tubes and quadruple pass boiler tube, and three journey pipes also do not have application in ethane cracking furnace.
As depicted in figs. 1 and 2, two journey 2-1 types (comprising the first journey boiler tube 1 and the second journey boiler tube 2) and the quadruple pass 2-1-1-1 type boiler tube (comprising the first journey boiler tube 1, second journey boiler tube 2, the 3rd journey boiler tube 3 and quadruple pass boiler tube 4, Y-piece 6) of stone-Robert Webster company exploitation are typical branch adapter bonnet, the caliber of these two kinds of boiler tubes is by Cheng Fang great, but the pipe number of the first journey pipe is 1, the pipe number of all the other tube sides is all 1, and the residence time is about 0.15s-0.3s.Two journey 2-1 type boiler tube length are short compared with quadruple pass 2-1-1-1 type boiler tube, and the residence time is also shorter, and pressure drop is also less; Comparatively two journey 2-1 type boiler tubes are long for quadruple pass 2-1-1-1 type boiler tube, and the residence time is also slightly long, and pressure drop is also larger, but throughput is large compared with two journey 2-1 type boiler tubes.
At present, no matter be that two journey 2-1 types and quadruple pass 2-1-1-1 type boiler tube are arranged, radiating furnace tube entrance and exit is all at pyrolyzer radiation furnace roof, be arranged in the small space of furnace roof across pipe, furnace tube spring hanger system and waste heat boiler, their rational, collisionless layouts are the difficult points of engineering design always.
Utility model content
The purpose of this utility model is to solve the difficult problem existed in above-mentioned prior art, a kind of ethane cracking furnace 4-3-1 type radiating furnace tube is provided, it has the feature of two journey 2-1 type boiler tubes compared with short residence time(SRT) and low pressure drop, there is again the feature that quadruple pass 2-1-1-1 type boiler tube throughput is larger, three journey 4-3-1 type radiating furnace tube material bottom in and top out or upper entering and lower leavings.
The utility model is achieved through the following technical solutions:
A kind of ethane cracking furnace 4-3-1 type radiating furnace tube, comprises the first journey boiler tube, the second journey boiler tube and the 3rd journey boiler tube;
Described first journey boiler tube comprises four boiler tubes, and the second journey boiler tube comprises three boiler tubes, and the 3rd journey boiler tube comprises a boiler tube;
One end of first journey boiler tube is connected with one end of 4-3 type pipe fitting, and the other end of 4-3 type pipe fitting is connected with one end of U-tube, and one end of the other end transition conduit of U-tube connects, and the other end of transition conduit is connected with one end of the second journey boiler tube;
The other end of the second journey boiler tube is connected with one end of three-in-one pipe fitting, and after the two-in-one convergence of three-in-one pipe fitting, the other end of three-in-one pipe fitting is connected with the one end across pipe, and the other end across pipe is connected with one end of the 3rd journey boiler tube;
The opening end of described first journey boiler tube is positioned at the top, and the opening end of described 3rd journey boiler tube is positioned at bottom;
Or the opening end of described first journey boiler tube is positioned at bottom, the opening end of described 3rd journey boiler tube is positioned at the top.
Described 4-3 type pipe fitting comprises four inlet ends and three exit end;
One end of four boiler tubes of described first journey boiler tube is connected with four inlet ends of 4-3 type pipe fitting respectively;
Each exit end of 4-3 type pipe fitting is connected with one end of a U-tube; The other end of three U-tube is connected respectively by transition conduit one end with three boiler tubes of the second journey boiler tube.
Described three-in-one pipe fitting comprises three inlet ends and an exit end; Three inlet ends are connected with the other end of three boiler tubes of the second journey boiler tube respectively; The exit end of three-in-one pipe fitting is connected with the one end across pipe.
A Venturi tube is equipped with in each boiler tube of described second journey boiler tube.Like this, four described first journey pipes are transitioned into three second journey pipes through 4-3 type pipe fitting, and under the effect of the second journey pipe Venturi tube, be evenly distributed to three the second journey pipes.
Four boiler tubes of described first journey boiler tube, three boiler tubes of the second journey boiler tube and the 3rd journey boiler tube are circular boiler tube.
The internal diameter of four boiler tubes of described first journey boiler tube is φ 1, and the internal diameter of three boiler tubes of the second journey boiler tube is φ 2, and the internal diameter of the 3rd journey boiler tube is φ 3, and φ 1≤φ 2≤φ 3,40mm≤φ 1≤60mm, 47mm≤φ 2≤70mm, 82mm≤φ 3≤122mm.
Four boiler tubes of described first journey boiler tube, three boiler tubes of the second journey boiler tube are hung with the 3rd journey boiler tube is all vertical, and perpendicular to the center line of radiant heat zone.
Compared with prior art, the beneficial effects of the utility model are: the utility model has the feature of two journey 2-1 type boiler tubes compared with short residence time(SRT) and low pressure drop, there is again the feature that quadruple pass 2-1-1-1 type boiler tube throughput is larger, improve processing performance to a certain extent; The mode that three journey 4-3-1 type radiating furnace tubes can be taked material furnace bottom to enter furnace roof to go out, make to be arranged in the spring hanger system layout of furnace bottom, waste heat boiler and part boiler tube at furnace roof across pipe, add the handiness of furnace roof spatial arrangement, bring facility to engineering construction.
Accompanying drawing explanation
Two journey 2-1 type boiler tube configurations of Fig. 1 prior art
The quadruple pass 2-1-1-1 type boiler tube configuration of Fig. 2 prior art
Fig. 3 the utility model three journey 4-3-1 type boiler tube configuration.
1-first journey boiler tube; 2-second journey boiler tube; 3-the 3rd journey boiler tube; 4-quadruple pass boiler tube; 5-transition conduit; 6-Y type pipe; 7-4-3 type pipe fitting; The three-in-one pipe fitting of 8-; 9-Venturi tube; 10-radiation section center line.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
The utility model 4-3-1 type radiating furnace tube is three journey boiler tubes, and the first journey boiler tube 1 is five boiler tubes, and the second journey boiler tube 2 is two boiler tubes, and the 3rd journey boiler tube 3 is a boiler tube, and boiler tube is all circular boiler tube.The lower end of the first journey boiler tube 1 is connected with 4-3 type pipe fitting 7 upper end, and 4-3 type pipe fitting 7 lower end is connected with one end of U-tube, and the other end of U-tube is connected with the lower end of the second journey boiler tube 2; Respectively have the upper end of a Venturi tube 9, second journey boiler tube 2 to be connected with the lower end of three-in-one pipe fitting 8 in the straight tube of the second journey boiler tube 2, after three-in-one pipe fitting 8 converges, its upper end is connected with the one end across pipe, and the other end across pipe is connected with the upper end of the 3rd journey boiler tube 3.
First journey stove bore is φ 1, and the second journey boiler tube 2 internal diameter is φ 2, and the 3rd journey boiler tube 3 internal diameter is φ 3, and φ 1≤φ 2≤φ 3,40mm≤φ 1≤60mm, 47mm≤φ 2≤70mm, 82mm≤φ 3≤122mm.This radiating furnace tube is vertical hanging, and perpendicular to the center line 10 of radiant heat zone.
Particularly, in order to overcome the shortcoming of existing two journey 2-1 boiler tubes and quadruple pass 2-1-1-1 boiler tube, the utility model adopts three journey 4-3-1 type radiating furnace tubes, and radiating furnace tube material bottom in and top out, improves processing performance to a certain extent.
As shown in Figure 3, an embodiment is as follows: radiating furnace tube is three journey boiler tubes, the first journey Guan Weisi root boiler tube, the second journey Guan Weisan root boiler tube, and the 3rd journey boiler tube is a boiler tube, and boiler tube is all circular boiler tube, radiating furnace tube material bottom in and top out.First journey stove bore is 50mm, and the second journey stove bore is 57mm, and the 3rd journey stove bore is 100mm.This radiating furnace tube is vertical hanging, and perpendicular to the center line of radiant heat zone.
The utility model provides a kind of ethane cracking furnace 4-3-1 type radiating furnace tube, it has the feature of two journey 2-1 type boiler tubes compared with short residence time(SRT) and low pressure drop, there is again the feature that quadruple pass 2-1-1-1 type boiler tube throughput is larger, improve processing performance to a certain extent; The mode that three journey 4-3-1 type radiating furnace tubes can be taked material furnace bottom to enter furnace roof to go out, namely the first journey boiler tube enters from bottom, 3rd journey pipe goes out from top, make to be arranged in the spring hanger system layout of furnace bottom, waste heat boiler and part boiler tube at furnace roof across pipe, add the handiness of furnace roof spatial arrangement, bring facility to engineering construction.
Technique scheme is several the most typical embodiment of the present utility model, for those skilled in the art, on the basis that the utility model discloses application method and principle, be easy to make various types of improvement or distortion, and the method be not limited only to described by the above-mentioned embodiment of the utility model, therefore previously described mode is just preferred, and does not have restrictive meaning.The utility model radiant coil can be used for newly-built pyrolyzer or carries out capacity expansion revamping to pyrolyzer.
Claims (7)
1. an ethane cracking furnace 4-3-1 type radiating furnace tube, is characterized in that: described ethane cracking furnace 4-3-1 type radiating furnace tube, comprises the first journey boiler tube, the second journey boiler tube and the 3rd journey boiler tube;
Described first journey boiler tube comprises four boiler tubes, and the second journey boiler tube comprises three boiler tubes, and the 3rd journey boiler tube comprises a boiler tube;
One end of first journey boiler tube is connected with one end of 4-3 type pipe fitting, and the other end of 4-3 type pipe fitting is connected with one end of U-tube, and one end of the other end transition conduit of U-tube connects, and the other end of transition conduit is connected with one end of the second journey boiler tube;
The other end of the second journey boiler tube is connected with one end of three-in-one pipe fitting, and the other end of three-in-one pipe fitting is connected with the one end across pipe, and the other end across pipe is connected with one end of the 3rd journey boiler tube;
The opening end of described first journey boiler tube is positioned at the top, and the opening end of described 3rd journey boiler tube is positioned at bottom;
Or the opening end of described first journey boiler tube is positioned at bottom, the opening end of described 3rd journey boiler tube is positioned at the top.
2. ethane cracking furnace 4-3-1 type radiating furnace tube according to claim 1, is characterized in that: described 4-3 type pipe fitting comprises four inlet ends and three exit end;
One end of four boiler tubes of described first journey boiler tube is connected with four inlet ends of 4-3 type pipe fitting respectively;
Each exit end of 4-3 type pipe fitting is connected with one end of a U-tube; The other end of three U-tube is connected respectively by transition conduit one end with three boiler tubes of the second journey boiler tube.
3. ethane cracking furnace 4-3-1 type radiating furnace tube according to claim 2, is characterized in that: described three-in-one pipe fitting comprises three inlet ends and an exit end; Three inlet ends are connected with the other end of three boiler tubes of the second journey boiler tube respectively; The exit end of three-in-one pipe fitting is connected with the one end across pipe.
4. ethane cracking furnace 4-3-1 type radiating furnace tube according to claim 3, is characterized in that: be equipped with a Venturi tube in each boiler tube of the second journey boiler tube.
5. ethane cracking furnace 4-3-1 type radiating furnace tube according to claim 4, is characterized in that: four boiler tubes of described first journey boiler tube, three boiler tubes of the second journey boiler tube and the 3rd journey boiler tube are circular boiler tube.
6. ethane cracking furnace 4-3-1 type radiating furnace tube according to claim 5, it is characterized in that: the internal diameter of four boiler tubes of described first journey boiler tube is φ 1, the internal diameter of three boiler tubes of the second journey boiler tube is φ 2, the internal diameter of the 3rd journey boiler tube is φ 3, and φ 1≤φ 2≤φ 3,40mm≤φ 1≤60mm, 47mm≤φ 2≤70mm, 82mm≤φ 3≤122mm.
7. according to the arbitrary described ethane cracking furnace 4-3-1 type radiating furnace tube of claim 1 to 6, it is characterized in that: four boiler tubes of described first journey boiler tube, three boiler tubes of the second journey boiler tube are hung with the 3rd journey boiler tube is all vertical, and perpendicular to the center line of radiant heat zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678404.1U CN204325235U (en) | 2014-11-07 | 2014-11-07 | A kind of ethane cracking furnace 4-3-1 type radiating furnace tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420678404.1U CN204325235U (en) | 2014-11-07 | 2014-11-07 | A kind of ethane cracking furnace 4-3-1 type radiating furnace tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204325235U true CN204325235U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420678404.1U Expired - Fee Related CN204325235U (en) | 2014-11-07 | 2014-11-07 | A kind of ethane cracking furnace 4-3-1 type radiating furnace tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204325235U (en) |
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2014
- 2014-11-07 CN CN201420678404.1U patent/CN204325235U/en not_active Expired - Fee Related
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| 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: 20150513 Termination date: 20151107 |
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| EXPY | Termination of patent right or utility model |