CN103245222A - Pipeline configuration structure of triple-inlet air cooler system for hydrogenation reaction effluents - Google Patents
Pipeline configuration structure of triple-inlet air cooler system for hydrogenation reaction effluents Download PDFInfo
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- CN103245222A CN103245222A CN2013101374290A CN201310137429A CN103245222A CN 103245222 A CN103245222 A CN 103245222A CN 2013101374290 A CN2013101374290 A CN 2013101374290A CN 201310137429 A CN201310137429 A CN 201310137429A CN 103245222 A CN103245222 A CN 103245222A
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Abstract
The invention discloses a pipeline configuration structure of a triple-inlet air cooler system for hydrogenation reaction effluents. The pipeline configuration structure is characterized in that an inlet header pipe is perpendicularly downwardly communicated with a middle point of a first pipeline, two ends of the inlet header pipe are respectively communicated with a second pipeline and a third pipeline, and a plane formed by the second pipeline and the third pipeline is perpendicular to a plane formed by the inlet header pipe and the first pipeline; the tail end of the second pipeline and the tail end of the third pipeline are perpendicularly communicated with a fourth pipeline, two ends and the center point of the fourth pipeline are respectively perpendicularly communicated with a fifth pipeline, a seventh pipeline and a sixth pipeline, a plane formed by the fifth pipeline, the seventh pipeline and the sixth pipeline is perpendicular to a plane formed by the first pipeline, the second pipeline and the third pipeline, and the fourth pipeline is quartered by three joints along the length direction of the fourth pipeline and the three joints are formed by the fourth pipeline jointed with the second pipeline, the third pipeline and the sixth pipeline respectively and the tail end of the fifth pipeline, the tail end of the sixth pipeline and the tail lend of the seventh pipeline are perpendicularly communicated with an air cooler header and quarter the air cooler header. The pipeline configuration structure has the advantages that phenomena of multi-phase flow erosion corrosion, deposition and blockage of ammonium salt and under-deposit corrosion due to uneven distribution of flow parameters of existing air cooler tube bundles can be reduced, unintended shutdown accidents are reduced, and the safe operation cycle of the air cooler system for the hydrogenation reaction effluents is prolonged.
Description
Technical field
The present invention relates to air-cooler system, relate to a kind of three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures specifically.
Background technology
Petrochemical industry is the pillar industry of China, and hydrocracking is oil refining process important in the oil plant, and hydrogenation reaction outflow air-cooler system is one of key equipment in the hydrocracking unit.In recent years; aggravation along with the world energy sources crisis; each enterprise of great oil refining constantly develops towards the direction of crude oil poor qualityization, device maximization, operating mode harshnessization; thereby caused the mobile corrosion failure of general hydrogenation reaction outflow air-cooler system; restrain obstruction, perforation, booster etc. frequently and caused a lot of unplanned shutdown accidents, become the outstanding problem of restriction hydrocracking unit long period safe operation.
How the mobile corrosion failure of science control hydrogenation reaction outflow air-cooler system is one of difficult problem of paying close attention in the world always.In the last few years, NACE technical committee, API association etc. have successively carried out a large amount of inefficacy case investigation statistics, and before and after 2004, released design, manufacturing, check, operation instruction criterion API 932-A, the API 932-B of hydrogenation REAC system, and recommend the hydrogenation reaction outflow air-cooler system material is upgraded to Incoloy 825 by carbon steel.Under the influence of API 932 standards, the upgrading of tube bank material is selected by domestic and international many petroleum chemical enterprises, to prolong the cycle of operation of air-cooler system.Finding after the upgrading material shows: although can improve the anti-mobile corrosive nature of air cooler tube bundle by upgrade of material, but it involves great expense, and for the operation of whole hydrogenation air-cooler system, effect is also not obvious, and part enterprise restrains leakage, the pipe explosion accident of restraining after the upgrade of material and still has generation.
The flow field numerical analysis of hydrogenation air-cooler system is the result show: the mobile corrosion failure of hydrogenation reaction outflow air-cooler system is closely related with the architectural characteristic of importing and exporting duct arrangement structure, bobbin carriage, the generation of the inhomogeneous and vortex of its inner multiphase flow Flow Field Distribution (phase fraction, flow velocity, flow) is to cause the main cause that partial hydrogenation reaction effluent air cooler tube bank local scour burn into ammonium salt sedimentation stops up and underdeposit corrosion lost efficacy.Therefore, import and export duct arrangement (pipe is joined) structure at hydrogenation reaction outflow air-cooler system and carry out the key that the balance optimizing design is solution air-cooler system frequent failure problem.
Summary of the invention
The object of the present invention is to provide a kind of three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures, solve the hydrogenation air-cooler system frequent failure problem that comprises the fluid bias current phenomenon initiation that inlet pipeline system, air cooler channel structure imbalance cause that exists in the background technology, prolong the service life of hydrogenation air-cooler system, reduce the generation of unplanned shutdown accident.
In order to achieve the above object, the technical solution adopted in the present invention is:
The present invention includes intake header, first pipeline, second pipeline, the 3rd pipeline, the 4th pipeline, the 5th pipeline, the 6th pipeline, the 7th pipeline, air cooler bobbin carriage, air cooler tube bundle; The intake header entrance point is horizontal direction, terminal for vertically downward, reduced pipe through threeway and two ends is communicated with the mid point of first pipeline, the two ends of first pipeline are communicated with second pipeline and the 3rd pipeline through elbow respectively, the end of second pipeline is communicated with the 4th pipeline through the reduced pipe at threeway and two ends, the end of the 3rd pipeline is communicated with the 4th pipeline through the reduced pipe at threeway, two ends, and plane and intake header end vertically downward that second pipeline and the 3rd pipeline are formed are perpendicular with the plane of first pipeline composition; The 4th pipeline center's point is through threeway and the 6th pipeline vertical connection, the 4th pipe ends through elbow respectively with the 5th pipeline, the 7th pipeline vertical connection, and the plane that the 5th pipeline, the 7th pipeline, the 6th pipeline are formed is perpendicular with the plane of first pipeline, second pipeline, the 3rd pipeline composition, and three interfaces of the 4th pipeline and second pipeline, the 3rd pipeline, the 6th pipeline are with the 4th pipeline quartering along its length; The 5th pipeline, the 6th pipeline, the 7th pipe end and the air cooler bobbin carriage is vertical is connected, three interfaces are with the air cooler bobbin carriage quartering along its length.
Described pipe fitting comprises threeway, reduced pipe and elbow; The reduced pipe of the port of export is the twice of entrance point reduced pipe internal diameter.
Described the 5th pipeline, the 6th pipeline, the 7th pipeline pass through connecting mode and the air cooler bobbin carriage vertical connection of welding or flange respectively.
A described air cooler bobbin carriage side along its length is equipped with the identical air cooler tube bundle of two row's specifications, and every emptying cooler is restrained uniform installation.
The beneficial effect that the present invention has is:
The three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures that the present invention proposes adopt pipeline antarafacial balanced arrangement mode not at the same level, guaranteed the balanced distribution of multiphase flow flow parameter such as flow and phase fraction in entering three pipelines of air cooler bobbin carriage, the bias current problem of having avoided pipeline branch in same plane to cause.The structure of three entrance air cooler bobbin carriages can effectively be avoided the generation of vortex phenomenon in the bobbin carriage, can make three-phase (oil, gas, water) distributed uniform between each air cooler tube bundle of fluid media (medium), increases the uniformity of media flow parameter distribution in the tube bank.The present invention can effectively reduce multiphase flow erosion corrosion, ammonium salt sedimentation obstruction and the underdeposit corrosion phenomenon that air cooler tube bundle flow parameter skewness causes, reduce the generation of unplanned shutdown accident, prolong the safe operation cycle of hydrogenation reaction outflow air-cooler system.
Description of drawings
Fig. 1 is the structural representation of three entrance hydrogenation reaction effluent air coolers and pipe arrangement.
Fig. 2 is the enlarged drawing of A among Fig. 1.
Among the figure: 1, intake header, 2, first pipeline, 3, second pipeline, the 4, the 3rd pipeline, the 5, the 4th pipeline, the 6, the 5th pipeline, the 7, the 6th pipeline, the 8, the 7th pipeline, 9, the air cooler bobbin carriage, 10, air cooler tube bundle.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 1, be structural representation of the present invention, comprise intake header 1, first pipeline 2, second pipeline 3, the 3rd pipeline 4, the 4th pipeline 5, the 5th pipeline 6, the 6th pipeline 7, the 7th pipeline 8, air cooler bobbin carriage 9, air cooler tube bundle 10.Wherein intake header 1 entrance point is horizontal direction, the port of export is vertical downward direction, intake header 1 horizontal segment is communicated with through pipe fitting (90 ° of elbows) with vertical section, vertically downward terminal earlier through threeway, the reduced pipe through two ends is connected with the mid point of first pipeline 2 again of intake header 1, the two ends of first pipeline 2 are communicated with second pipeline 3 and the 3rd pipeline 4 through pipe fitting (90 ° of elbows) respectively, and wherein intake header 1 pipeline section and first pipeline 2 plane and second pipeline 3 formed vertically downward is perpendicular with the plane of the 3rd pipeline 4 compositions; Second pipeline 3 and the 3rd pipeline 4 are terminal earlier through threeway, reduced pipe through two ends is connected with the 4th pipeline 5 again, the 4th pipeline 5 two ends are respectively through pipe fitting (90 ° of elbows) and the 5th pipeline 6, the 7th pipeline 8 vertically is connected, the 4th pipeline 5 central points are through pipe fitting (threeway) and 7 vertical being connected of the 6th pipeline, and the 5th pipeline 6, the 7th pipeline 8, plane and second pipeline 3 that the 6th pipeline 7 is formed, the plane that the 3rd pipeline 4 is formed is perpendicular, the 4th pipeline 5 and second pipeline 3, the 3rd pipeline 4, three interfaces of the 6th pipeline 7 with the 4th pipeline 5 along its length direction quartering; The end of the 5th pipeline 6, the 6th pipeline 7, the 7th pipeline 8 is by welding or the form and 9 vertical being connected of air cooler bobbin carriage of flange, and three interfaces with air cooler bobbin carriage 9 along its length direction quartering; Air cooler bobbin carriage 9 is equipped with identical air cooler tube bundle 10 and the uniform installation of two row's specifications along a side of its length direction, every emptying cooler tube bank quantity and specification are decided on the needs of technology heat exchange, are set to 40～50 usually, tube bank internal diameter 19 mm, wall thickness 3 mm, length 5 ~ 10 m.
As shown in Figure 2, be the enlarged drawing of A among structural representation Fig. 1 of the present invention.Wherein intake header 1 end vertically downward is communicated with first pipeline 2 through threeway B, reduced pipe C respectively, first pipeline 2 is communicated with second pipeline 3, the 3rd pipeline 4 respectively through elbow D again, and the diameter (internal diameter) that reduced pipe C is connected with threeway B is 2 times of the diameter (internal diameter) that is connected with first pipeline 2.Similarly, second pipeline 3, the 3rd pipeline 4 pass through at first process threeway, are communicated with the 4th pipeline 5 through reduced pipe, and the internal diameter of the 4th pipeline 5 is 1/2 of second pipeline 3 and the 3rd pipeline 4 internal diameters; The 4th pipeline 5 central points are through threeway and the 6th pipeline 7 vertical connections, and the 4th pipeline 5 is identical with the 6th pipeline 7 internal diameters.
The concrete course of work of the present invention:
The product of hydrogenation reaction is oil, gas, the heterogeneous blending agent that water is formed, usually be referred to as hydrogenation reaction effluent, oil, gas, the multiphase flow medium of water three phase compositions enters pipe-line system through intake header 1 import, the multiphase flow medium is divided into two through intake header 1 and flow into 2 imports of first pipeline, the multiphase flow medium enters into second pipeline 3 and 4 imports of the 3rd pipeline through two outlets of first pipeline 2 again, the multiphase flow medium enters into 5 imports of the 4th pipeline through second pipeline 3 and 4 outlets of the 3rd pipeline again, the multiphase flow medium is divided into three through the 4th pipeline 5 one again and flows into the 5th pipeline 6 respectively, the 6th pipeline 7, the 7th pipeline 8, flow into air cooler bobbin carriage 9 again, final flow into the cooling procedure that air cooler tube bundle 10 that outside that two rows are arranged in parallel has finned tube is finished reaction effluent, reach the needed chilling temperature of technology.
The above-mentioned specific embodiment is used for the present invention that explains, rather than limits the invention, and in the protection domain of claim of the present invention, any modification that the present invention is made all will fall into protection scope of the present invention.
Claims (4)
1. an entrance hydrogenation reaction outflow air-cooler system pipe distribution structure is characterized in that: comprise intake header (1), first pipeline (2), second pipeline (3), the 3rd pipeline (4), the 4th pipeline (5), the 5th pipeline (6), the 6th pipeline (7), the 7th pipeline (8), air cooler bobbin carriage (9), air cooler tube bundle (10); Intake header (1) entrance point is horizontal direction, terminal for vertically downward, reduced pipe through threeway and two ends is communicated with the mid point of first pipeline (2), the two ends of first pipeline (2) are communicated with second pipeline (3) and the 3rd pipeline (4) through elbow respectively, the end of second pipeline (3) is communicated with the 4th pipeline (5) through the reduced pipe at threeway and two ends, the end of the 3rd pipeline (4) is through threeway, the reduced pipe at two ends is communicated with the 4th pipeline (5), and plane and intake header (1) end vertically downward that second pipeline (3) and the 3rd pipeline (4) are formed are perpendicular with the plane of first pipeline (2) composition; The 4th pipeline (5) central point is through threeway and the 6th pipeline (7) vertical connection, the 4th pipeline (5) two ends through elbow respectively with the 5th pipeline (6), the 7th pipeline (8) vertical connection, and the plane that the 5th pipeline (6), the 7th pipeline (8), the 6th pipeline (7) are formed is perpendicular with the plane that first pipeline (2), second pipeline (3), the 3rd pipeline (4) are formed, and three interfaces of the 4th pipeline (5) and second pipeline (3), the 3rd pipeline (4), the 6th pipeline (7) are with the 4th pipeline (5) quartering along its length; Terminal and vertical being connected of air cooler bobbin carriage (9) of the 5th pipeline (6), the 6th pipeline (7), the 7th pipeline (8), three interfaces are with air cooler bobbin carriage (9) quartering along its length.
2. a kind of three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures according to claim 1, it is characterized in that: described pipe fitting comprises threeway, reduced pipe and elbow; The reduced pipe of the port of export is the twice of entrance point reduced pipe internal diameter.
3. a kind of three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures according to claim 1 is characterized in that: described the 5th pipeline (6), the 6th pipeline (7), the 7th pipeline (8) be connecting mode and air cooler bobbin carriage (9) vertical connection by welding or flange respectively.
4. a kind of three entrance hydrogenation reaction outflow air-cooler system pipe distribution structures according to claim 1, it is characterized in that: described air cooler bobbin carriage (a 9) side along its length is equipped with the identical air cooler tube bundle (10) of two row's specifications, and every emptying cooler is restrained uniform installation.
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| CN201310137429.0A CN103245222B (en) | 2013-04-19 | 2013-04-19 | Pipeline configuration structure of triple-inlet air cooler system for hydrogenation reaction effluents |
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| CN201310137429.0A CN103245222B (en) | 2013-04-19 | 2013-04-19 | Pipeline configuration structure of triple-inlet air cooler system for hydrogenation reaction effluents |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628729A (en) * | 2015-12-24 | 2016-06-01 | 浙江理工大学 | Prediction method for hydrogenation reaction exudation multi-phase flow NH4Cl salt crystallization rates |
| CN106989630A (en) * | 2017-03-16 | 2017-07-28 | 上海交通大学 | A kind of pipe arrangement and the large-scale ice chest with the matched tube structure |
| CN113267081A (en) * | 2021-05-08 | 2021-08-17 | 浙江理工大学 | Method for identifying and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
| CN113267080A (en) * | 2021-05-08 | 2021-08-17 | 浙江理工大学 | System for recognizing and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
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| CN101140131A (en) * | 2007-08-24 | 2008-03-12 | 浙江理工大学 | Hydrocracking reaction effluence system based on asymmetry analyse |
| CN201488410U (en) * | 2009-08-28 | 2010-05-26 | 周泽生 | Multi-stage shunting condenser |
| CN203298631U (en) * | 2013-04-19 | 2013-11-20 | 浙江理工大学 | Three-inlet pipeline arrangement structure of hydrogenation reaction effluent air cooler system |
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2013
- 2013-04-19 CN CN201310137429.0A patent/CN103245222B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101140131A (en) * | 2007-08-24 | 2008-03-12 | 浙江理工大学 | Hydrocracking reaction effluence system based on asymmetry analyse |
| CN201488410U (en) * | 2009-08-28 | 2010-05-26 | 周泽生 | Multi-stage shunting condenser |
| CN203298631U (en) * | 2013-04-19 | 2013-11-20 | 浙江理工大学 | Three-inlet pipeline arrangement structure of hydrogenation reaction effluent air cooler system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105628729A (en) * | 2015-12-24 | 2016-06-01 | 浙江理工大学 | Prediction method for hydrogenation reaction exudation multi-phase flow NH4Cl salt crystallization rates |
| CN106989630A (en) * | 2017-03-16 | 2017-07-28 | 上海交通大学 | A kind of pipe arrangement and the large-scale ice chest with the matched tube structure |
| CN113267081A (en) * | 2021-05-08 | 2021-08-17 | 浙江理工大学 | Method for identifying and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
| CN113267080A (en) * | 2021-05-08 | 2021-08-17 | 浙江理工大学 | System for recognizing and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
| CN113267080B (en) * | 2021-05-08 | 2022-03-25 | 浙江理工大学 | System for recognizing and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
| CN113267081B (en) * | 2021-05-08 | 2022-03-25 | 浙江理工大学 | Method for identifying and eliminating deposition characteristics of ammonium salt in tube bundle of hydrogenation air cooler |
| WO2022237531A1 (en) * | 2021-05-08 | 2022-11-17 | 浙江理工大学 | Method for identifying and eliminating ammonium salt deposition characteristics in pipe bundle of hydrogenation air cooler |
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| CN103245222B (en) | 2015-02-25 |
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