CN202214332U - Special hydrogenation air cooling inlet piping device with water injection point and mixer - Google Patents
Special hydrogenation air cooling inlet piping device with water injection point and mixer Download PDFInfo
- Publication number
- CN202214332U CN202214332U CN2011203119936U CN201120311993U CN202214332U CN 202214332 U CN202214332 U CN 202214332U CN 2011203119936 U CN2011203119936 U CN 2011203119936U CN 201120311993 U CN201120311993 U CN 201120311993U CN 202214332 U CN202214332 U CN 202214332U
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- Prior art keywords
- water injection
- bypass line
- inlet
- injection point
- air cooling
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Abstract
The utility model discloses a special hydrogenation air cooling inlet piping device with a water injection point and a mixer. An inlet pipeline is connected with multiphase flow media and divided into two pipelines through a static mixer. The outlets of the two pipelines are coupled with the top surface of a pipe box along the vertical direction. One to three rows of holes connected with a parallel fin pipe bundle are distributed in the lateral surface of the pipe box along the length direction; a water injection pipe is accessed to the inlet pipeline from the side through two collecting flanges to form a technical water injection point upward. Flow-limiting pore plates are connected between the two collecting flanges. Water injection quantity is adjusted by changing the flow-limiting pore plates or by a water injection pump. The reverse fountain type water injection point and the static mixer of the special hydrogenation air cooling inlet piping device in serial connection are installed at a hydrogenation pipe bundle inlet to adequately mix the multiphase flow media of oil, gas, and water after water injection. Before entering the hydrogenation air cooling pipe box, the multiphase flow media are mixed uniformly so that the liquid water flowing uniformly on the inner wall of the pipe bundle can effectively wash crystallized NH4HS or NH4Cl salts and reduce the risk of failure of flow induced corrosion.
Description
Technical field
The utility model relates to a kind of reaction effluent air cooler tube bundle system, specifically relates to equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank.
Background technology
Since the Isocracking hydrocracking technology of nineteen fifty-nine Chevron company invention came into operation, through six more than ten years developing rapidly in worldwide, this technology progressively became the core technology of petroleum chemical enterprise's light materialization of heavy oil.As the important secondary processing means of refinery, hydrocracking reaction effluent air cooler (Reactor Effluent Air Coolers is called for short REAC) system is in occupation of critical role.Processed the influence that Middle East high-sulfur, peracid, BO ratio such as chloride increase; In the evolution of oil refining apparatus maximization, raw oil poor qualityization, operation condition harshnessization; A lot of tube bank perforation leakage accidents have frequently appearred in hydrogenation REAC system; Its invalid characteristic has tangible locality, sudden and risk, has become the significant obstacle of safety in production of restriction petrochemical industry and sustainable and healthy development.
To the frequent leakage failure problem of hydrogenation REAC system, comprise that both at home and abroad scientific researches such as API, UOP, NACE, Institutes Of Technology Of Zhejiang and academic institution have carried out big quantity research, have explained NH in interchanger and the hydrogenation REAC system process process of cooling
4HS and NH
4The mobile deposition underdeposit corrosion and the multi-phase flow erosion mechanism of two kinds of ammonium salts of Cl have provided the Correlative Influence Factors that causes tube bank leakage perforation.Achievement in research shows, causes that hydrogen cracking interchanger, the inhomogeneous distribution of reaction effluent air cooler interior flow field are to cause multi-phase flow erosion or the sedimentary key influence factor of ammonium salt crystallization.When UOP investigated hydrogenation unit in 1996; Harvey and Singh is also proposing structural performance in the R. L. Piehl conclusion certainly; For example the symmetry of REAC system tube bank is the mobile key influence factor of corrosive of influence, and flow velocity is less than 4.6m/s and NH
4HS concentration is only applicable to the carbon steel REAC tube bank of complete symmetric arrangement less than 8% performance constraint; In case because of structure or water filling factor generation logistics distribution imbalance; Cause the bias current problem of tube bank together, cause part thus and restrain the local erosion problem after ammonium salt stops up.Show about the inefficacy finding of national hydrogenation air cooler according to China PetroChemical Corporation in 2006; The location of water injection and the water injection rate of hydrogenation REAC systems such as many oil refining enterprises comprise Zhenghai refinery, raise sub-petrochemical industry, Maoming petrochemical industry are different; Existing single-point water filling; The multiple spot water flooding regime is arranged again, and the failure mechanism that the tube bank perforation is leaked also has nothing in common with each other.Institutes Of Technology Of Zhejiang idol national wealth, Jin Haozhe are on the basis of fully investigation, and innovation proposes to be applicable to hydrogenation REAC system flow degree of unbalancedness notion, and have realized degree of unbalancedness calculating to raising sub-petrochemical industry hydrogenation REAC system.Research shows, different water flooding regimes, particularly multiple spot water flooding regime, and the under meter metering is inaccurate, and the actual bets water yield deviation of eight air coolers is very big, because the difference of water injection rate causes the air cooler Flow Field Distribution uneven, NH takes place in the part tube bank
4HS and NH
4The Cl ammonium salt stops up, and part tube bank then can multi-phase flow erosion take place under the effect of high density caustic soln lost efficacy because of the tube bank flow increases in addition.In addition, since the medium that hydrogenation REAC system carries for containing H
2, H
2S, HCl, NH
3, the polyphasic flow formed such as oil, water; Demixing phenomenon is obvious between each phase, and the liquid water yield of duct bottom is bigger, so in case flow velocity is too fast; Then can produce bigger shear-stress the corrosion product protective membrane that generates in the caustic soln system is washed out, cause tube bank perforation leakage.Therefore, very urgent in the engineering design for the technology water flooding regime and the static mixer that are applicable to hydrogenation REAC system heterogeneous flow field equilibrium distribution.But regrettably; Existing hydrogenation REAC system is a standardized component; Amount of finish that relates in the raw oil course of processing and working conditions change are very big; The mobile corrosion risk that causes thus is very high, and a present ubiquitous ammonium salt crystallization deposition underdeposit corrosion of hydrogenation REAC system or a multi-phase flow erosion inefficacy difficult problem can be effectively alleviated in a kind of special-purpose hydrogenation air cooling tube bank with injection point and mixing tank that the utility model proposes.
Summary of the invention
The purpose of the utility model is to provide a kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank equipped putting; Can make and comprise oil, gas, the triphasic polyphasic flow medium of water thorough mixing; Guarantee that the polyphasic flow medium mixes; Avoid the polyphasic flow medium demixing phenomenon in flow process, to occur, active balance hydrogenation REAC internal system flow field guarantees that air cooler tube bundle inside reduces the NH that forms along with temperature
4HS or NH
4The liquid water of Cl after by thorough mixing fully washes; Prevent that above-mentioned two kinds of ammonium salts from causing underdeposit corrosion or stopping up tube bank in tube bank intercrystalline deposition; The local erosion that also can avoid ammonium salt crystallization deposition underdeposit corrosion to cause; Can significantly improve the serviceability of hydrogenation REAC system from reducing the mobile corrosion operation risk of hydrogenation REAC system in essence.
In order to achieve the above object, the technical scheme of the utility model employing is:
The utility model comprises inlet duct, restriction orifice, reverse process injection point, static mixer, first bypass line, second bypass line, tube bank bobbin carriage, water injection pipe and finned-tube bundle; One termination polyphasic flow medium of inlet duct; The other end of inlet duct is divided into two bypass line behind static mixer; The outlet of first bypass line vertically connects through the end of first inlet flange with the tube bank bobbin carriage; The outlet of second bypass line vertically connects through the other end of second inlet flange with the tube bank bobbin carriage, is uniformly distributed with the hole that 1～3 row is connected with the finned-tube bundle of parallel connection on the tube bank bobbin carriage side along its length; Water injection pipe makes progress after inserting in the inlet duct from the side through two joint flanges; Be the technology injection point; Be connected to the restriction orifice that can dismantle in the middle of two joint flanges, water injection rate is regulated through the transposing restriction orifice, or carries out process adjustments through the terminal waterflood pump of water injection pipe.
Described static mixer import and export is connected with inlet duct through flange respectively, and the static mixer position is near first bypass line and the second road pipeline joint, 10～30cm place.
Described first bypass line, second bypass line are symmetric arrangement along the inlet duct direction, and the size of two pipeline along continuous straight runs equates, vertically measure-alike of two pipelines.
Described two inlet flanges are symmetrical set along the vertical bisector plane of tube bank bobbin carriage top length direction.
The beneficial effect that the utlity model has is:
Equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube that the utility model proposes with injection point and mixing tank; Its principal feature is that reverse fountain type technology injection point and static mixer are series system and are installed on hydrogenation air cooling pipe beam entrance; Can carry out thorough mixing to the polyphasic flow medium that the oil after the water filling, gas, water are formed, prevent oil, gas, the triphasic lamination problem of water.Before getting into hydrogenation air cooling bobbin carriage, the polyphasic flow medium mixes, and the liquid water that air cooling tube bank inwall uniform distribution flows can effectively wash crystalline NH
4HS or NH
4Cl salt reduces the mobile corrosion failure risk such as ammonium salt sedimentation or multi-phase flow erosion of hydrogenation air cooling system in essence.In addition, the utility model is simple in structure, is easy to promote, and estimates accessible economic benefit and obvious social benefit.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, inlet duct; 2, restriction orifice; 3, reverse process injection point; 4, static mixer; 5, first bypass line; 6, second bypass line; 7, second inlet flange; 8, first inlet flange; 9, tube bank bobbin carriage; 10, water injection pipe; 11, finned-tube bundle.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
As shown in Figure 1; The equipped interposed structure synoptic diagram of a kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank for the utility model proposes is characterized in that: comprise inlet duct 1, restriction orifice 2, reverse process injection point 3, static mixer 4, first bypass line 5, second bypass line 6, restrain bobbin carriage 9, water injection pipe 10 and finned-tube bundle 11; One termination polyphasic flow medium of inlet duct 1; The other end of inlet duct 1 is divided into two bypass line behind static mixer 4; 5 outlets of first bypass line vertically connect through the end of first inlet flange 8 with tube bank bobbin carriage 9; 6 outlets of second bypass line vertically connect through the other end of second inlet flange 7 with tube bank bobbin carriage 9, are uniformly distributed with the hole that 1～3 row is connected with the finned-tube bundle 11 of parallel connection on tube bank bobbin carriage 9 side along its length; Water injection pipe 10 makes progress after inserting in the inlet duct 1 from the side through two joint flanges; Be technology injection point 3; Be connected to the restriction orifice 2 that can dismantle in the middle of two joint flanges, water injection rate is regulated through transposing restriction orifice 2, or carries out process adjustments through water injection pipe 10 terminal waterflood pumps.
Described static mixer 4 import and exports are connected with inlet duct 1 through flange respectively, and static mixer 4 positions are near first bypass line 5 and the second road pipeline, 6 joints, 10～30cm place.
Described first bypass line 5, second bypass line 6 are symmetric arrangement along inlet duct 1 direction, and the size of two pipeline along continuous straight runs equates, vertically measure-alike of two pipelines.
Described two inlet flanges 7,8 are symmetrical set along the vertical bisector plane of tube bank bobbin carriage 9 top length directions.
Be equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank of realizing that the utility model proposes, its concrete working process is: the polyphasic flow medium carries out oil, gas (H through static mixer after inlet duct 1 enters into static mixer 4
2, H
2S, HCl, NH
3), water carries out entering into behind the thorough mixing two and is connected with first inlet flange 8, second inlet flange 7 vertically offered along the vertical bisector plane symmetry of bobbin carriage length direction through tube bank bobbin carriage 9 tops respectively along first bypass line 5 of inlet duct 1 direction symmetric arrangement and second bypass line, 6, the first bypass line 5 and 6 outlets of second bypass line.In addition; The utility model structure also can not offered inlet flange 7 and 8; Can first bypass line 5 and 6 outlets of second bypass line is directly fixing with the import welding of tube bank bobbin carriage 9; Be uniformly distributed with 1～3 row and the hole that parallel connection tube bank 11 is connected on the side of going up along its length of tube bank bobbin carriage 9, be uniformly distributed with the hole that two rows are connected with the finned-tube bundle 11 of parallel connection among Fig. 1, as of the outlet of polyphasic flow medium at flowing pipe beam tube case 9.Wherein, The installation site of static mixer is very important; Its position should be positioned at inlet duct and be divided into two before near first bypass line and the about 10～30cm of second bypass line, 6 joints place; Its objective is as much as possible that near 9 imports of tube bank bobbin carriage demixing phenomenon appears again in oversize so that polyphasic flow because of the length of pipeline to prevent static mixer to mix the back.Under the situation of condition permission, good more the closer to joint, and static mixer should as far as possible vertically be installed.What need explanation especially is; Inlet duct 1 is divided into two and is divided in the process of first bypass line and second bypass line; The Way out of static mixer 4 is for vertically downward, and first bypass line 5 and second bypass line 6 be along inlet duct 1 direction symmetric arrangement, and promptly horizontal direction is measure-alike; Vertical direction is measure-alike, and the Way out of two branch roads is the vertical tube bank bobbin carriage 9 that gets into.The import of restriction orifice 2 is connected with water injection pipe 10 through flange, and water injection pipe 10 ends are connected with the technology waterflood pump.Restriction orifice 2 outlets are connected with water injection pipe 10 through flange, and water injection pipe 10 oppositely is deep into inlet duct 1, and fixing with inlet duct 1 through welding.Water injection pipe 10 ends are equipped with reverse process injection point 3, and water flooding regime is a fountain type, and promptly inlet duct 1 polyphasic flow direction is opposite with the technology waterflood direction, are beneficial to the thorough mixing of polyphasic flow medium and technology water filling.
As shown in Figure 1; A kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank that the utility model proposes is equipped with to put to refer in particular to and is applicable to an air cooler; Usually adopt the mode of many hydrogenation air cooler parallel connections in the engineering reality; So every equipped structure formation of putting of air cooler inlet tube is consistent, all be injection point and static mixer to be set in 9 imports of tube bank bobbin carriage.Wherein water injection rate can be regulated technology through restriction orifice 2 or water injection pipe 10 terminal waterflood pumps and live the water yield, guarantees that there are enough liquid waters in hydrogenation air cooler tube bundle inlet.In addition, because the existence of restriction orifice 2 so under the situation of many hydrogenation air cooler parallel connections, can guarantee that the water injection rate of each air cooler is consistent, the water filling offset issue that active service hydrogenation air-cooler system exists because of the multiple spot water filling can not occur.
Above-mentioned embodiment is used for the utility model of explaining; Rather than the utility model limited; In the protection domain of the spirit of the utility model and claim,, all fall into the protection domain of the utility model to any modification and the change that the utility model is made.
Claims (4)
1. equipped the putting of the special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank is characterized in that: comprise inlet duct (1), restriction orifice (2), reverse process injection point (3), static mixer (4), first bypass line (5), second bypass line (6), tube bank bobbin carriage (9), water injection pipe (10) and finned-tube bundle (11); One termination polyphasic flow medium of inlet duct (1); The other end of inlet duct (1) is divided into two bypass line behind static mixer (4); First bypass line (5) outlet vertically connects through the end of first inlet flange (8) with tube bank bobbin carriage (9); Second bypass line (6) outlet vertically connects through the other end of second inlet flange (7) with tube bank bobbin carriage (9), is uniformly distributed with the hole that 1～3 row is connected with the finned-tube bundle (11) of parallel connection on tube bank bobbin carriage (9) side along its length; Water injection pipe (10) makes progress after inserting in the inlet duct (1) from the side through two joint flanges; Be technology injection point (3); Be connected to the restriction orifice (2) that to dismantle in the middle of two joint flanges; Water injection rate is regulated through transposing restriction orifice (2), or carries out process adjustments through the terminal waterflood pump of water injection pipe (10).
2. equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube according to claim 1 with injection point and mixing tank; It is characterized in that: described static mixer (4) import and export is connected with inlet duct (1) through flange respectively, and static mixer (4) position is near first bypass line (5) and the second road pipeline (6) joint 10～30cm place.
3. equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube according to claim 1 with injection point and mixing tank; It is characterized in that: described first bypass line (5), second bypass line (6) are symmetric arrangement along inlet duct (1) direction; And the size of two pipeline along continuous straight runs equates, vertically measure-alike of two pipelines.
4. equipped the putting of a kind of special-purpose hydrogenation air cooling inlet tube with injection point and mixing tank according to claim 1, it is characterized in that: described two inlet flanges (7,8) are symmetrical set along the vertical bisector plane of tube bank bobbin carriage (9) top length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203119936U CN202214332U (en) | 2011-08-25 | 2011-08-25 | Special hydrogenation air cooling inlet piping device with water injection point and mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203119936U CN202214332U (en) | 2011-08-25 | 2011-08-25 | Special hydrogenation air cooling inlet piping device with water injection point and mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202214332U true CN202214332U (en) | 2012-05-09 |
Family
ID=46013595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203119936U Withdrawn - After Issue CN202214332U (en) | 2011-08-25 | 2011-08-25 | Special hydrogenation air cooling inlet piping device with water injection point and mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202214332U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297608A (en) * | 2011-08-25 | 2011-12-28 | 杭州富如德科技有限公司 | Special hydrogenation air cooling inlet pipe arrangement device with water injection point and mixer |
| CN104236363A (en) * | 2014-09-30 | 2014-12-24 | 洛阳瑞泽石化工程有限公司 | Air cooler inlet pipeline structure |
| CN113041871A (en) * | 2021-04-22 | 2021-06-29 | 昆明有色冶金设计研究院股份公司 | Stirring-free multiphase mixing and distributing device |
-
2011
- 2011-08-25 CN CN2011203119936U patent/CN202214332U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297608A (en) * | 2011-08-25 | 2011-12-28 | 杭州富如德科技有限公司 | Special hydrogenation air cooling inlet pipe arrangement device with water injection point and mixer |
| CN102297608B (en) * | 2011-08-25 | 2012-10-17 | 杭州富如德科技有限公司 | Special hydrogenation air cooling inlet pipe arrangement device with water injection point and mixer |
| CN104236363A (en) * | 2014-09-30 | 2014-12-24 | 洛阳瑞泽石化工程有限公司 | Air cooler inlet pipeline structure |
| CN104236363B (en) * | 2014-09-30 | 2016-03-23 | 洛阳瑞泽石化工程有限公司 | Air cooler inlet piping structure |
| CN113041871A (en) * | 2021-04-22 | 2021-06-29 | 昆明有色冶金设计研究院股份公司 | Stirring-free multiphase mixing and distributing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120509 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |