CN209210722U - A kind of flusher and fractionating system mitigating fouling and corrosion - Google Patents
A kind of flusher and fractionating system mitigating fouling and corrosion Download PDFInfo
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- CN209210722U CN209210722U CN201821896637.3U CN201821896637U CN209210722U CN 209210722 U CN209210722 U CN 209210722U CN 201821896637 U CN201821896637 U CN 201821896637U CN 209210722 U CN209210722 U CN 209210722U
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Abstract
The utility model relates to oil refining apparatus corrosion control technology fields, and in particular to a kind of flusher and fractionating system for mitigating fouling and corrosion, to solve the problems, such as that fouling caused by fractionating system salification existing in the prior art and corrosion phenomenon are serious.It includes fractionating column, flusher, heat exchanger, cooler and the oil water separator for mitigating fouling and corrosion.Fractionator overhead distillate is introduced into flusher using circulation drawing pump, the water sprayed in fractionator overhead distillate and flusher spray head, which is formed, inversely to be contacted, sour gas and salts substances sufficiently in washing dissolution distillate are effectively relieved salt fouling blockage equipment and reduce fractionating column top tray and push up the underdeposit corrosion degree for following pipeline.
Description
Technical field
The utility model relates to oil refining apparatus corrosion control technology fields, and in particular to it is a kind of mitigate fouling and corrosion rush
Cleaning device and fractionating system.
Background technique
Chloride, sulfide and nitride in crude oil generate NH in catalytic cracking process3, HCl and H2The corrosivity such as S
Substance, when temperature is reduced to the salt crust temperature of salt, salt with superfine small particle be fractionated column overhead distillate carry to
Upper layer column plate, salt are mainly shown as NH4Cl and NH4HS leads to fractionating column pressure drop increase, equipment and pipeline blocking, sets the whole series
It is standby to be unable to operate normally.
Traditional washing process mode is to be directly injected into fractionator overhead distillate pipeline by spray head, in water-washing process
The NH of dissolution4Cl and NH4HS, to next layer of tower tray, gradually rises with the liquid-phase reflux in tower with temperature, be easy to cause salt crust position
It moves down and salt crust cannot be completely eliminated, in water-washing process, NH4Cl and NH4HS aqueous solution is in the aggregation of flow velocity lower position to setting
Standby to cause serious corrosion, there are ammonium chloride crystals and more serious, ammonium salt and corrosion wind is precipitated in reaction effluent condensation cooling system
Danger is not effectively relieved.
Utility model content
The purpose of this utility model is to provide a kind of flushers for mitigating fouling and corrosion, can be by fractionation column
Top distillate is drawn and is cleaned outside fractionating column, improves water filling mixing in the prior art and disperses undesirable problem, mitigation is set
The problem of standby and pipeline ammonium salt blockage and corrosion.
Another of the utility model is designed to provide a kind of fractionating system, which includes that can preferably protect point
Tower and pipeline are evaporated, realizes better water-oil separating mode.
The embodiments of the present invention are achieved in that
It is a kind of mitigate fouling and corrosion flusher comprising can,douche, the first water injection pipe and be set to the flushing
Spray head inside tank, can,douche top are equipped with the air inlet connecting with external fractionator overhead distillate pipeline, rinse pot sidewall
Equipped with the first perforation, spray head is provided close to rinse the position of pot bottom, and water spraying direction is the air inlet direction, the first water filling
Pipe is connect across the first perforation with spray head.
In the utility model preferred embodiment, above-mentioned spray head quantity is at least one, and each spray head is equipped with multiple mists
Change nozzle, be in the conical surface cascade when water spray, opposite nozzle injection angle is 120 °~150 °.
In the utility model preferred embodiment, one end that above-mentioned first water injection pipe is set to inside can,douche is the first water filling
Pipe first end, and it is welded with first flange piece, spray head is welded with second flange piece, the first method close to the one end for stating the first water injection pipe
The shape and sealing hole of blue piece and second flange piece match, and close first flange piece and second flange piece simultaneously using bolt.
In the utility model preferred embodiment, above-mentioned air inlet and the first perforation are flange hole, and fractionator overhead evaporates
Out property management line and the first water injection pipe respectively with air inlet and the first detachable flanged joint of perforation.
In the utility model preferred embodiment, above-mentioned flushing pot bottom is equipped with water outlet, mixed for oil, water, salt to be discharged
Close object.
In the utility model preferred embodiment, the flusher of above-mentioned mitigation structure and corrosion further includes circulation drawing pump
And water pump, circulation drawing pump are set on fractionator overhead distillate pipeline, water pump is set on the first water injection pipe.
In the utility model preferred embodiment, above-mentioned fractionator overhead distillate pipeline and the first water injection pipe are equipped with certainly
Dynamic flow control valve.
It further include neutralizer storage tank and corrosion inhibiter storage tank in the utility model preferred embodiment, neutralizer storage tank is gentle
Erosion agent tank is connect with fractionator overhead distillate pipeline respectively.
A kind of fractionating system further includes the flusher of fractionating column and above-mentioned mitigation fouling and corrosion, fractionator overhead
Distillate pipeline is connected with the mitigation fouling with the flusher of corrosion.
In the utility model preferred embodiment, in fractionating system further include:
Heat exchanger, air cooler and/or water cooler, and successively connect with flusher pipeline；
Oil water separator, and connect with air cooler and/or water cooler pipeline.
Compared with the existing technology, the beneficial effect of the utility model embodiment is: one kind of the offer of the utility model point
System is evaporated, fractionator overhead distillate is drawn outside fractionating column, is rinsed using the flusher of a kind of mitigation fouling and corrosion,
Spray head water spraying direction is inversely contacted with fractionator overhead distillate approach axis on the contrary, being formed in flusher, is sufficiently washed molten
Solution makes sour gas in distillate become liquid phase, rinses the salts substances in distillate, form the mixture of oil, water and salt, mixes
Conjunction object enters oil water separator and is separated, the oil gas return fractionating column isolated, in the distillate after water-oil separating no longer
Salt is carried, therefore fractionator overhead is effectively relieved and the salification situation of system is followed on top, to mitigate fractionator overhead and top is followed
The underdeposit corrosion degree of system.
Detailed description of the invention
For the clearer technical solution for illustrating the utility model embodiment, letter is made to required attached drawing below
Singly introduce, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, therefore should not be regarded as
It is the restriction to protection scope, for those of ordinary skill in the art, without creative efforts, may be used also
With other accompanying drawings can also be obtained according to these attached drawings.
Fig. 1 is the fractionating system structural schematic diagram that the utility model first embodiment provides；
Fig. 2 is the fractionating system structural schematic diagram that the utility model second embodiment provides；
Fig. 3 is the flusher structural schematic diagram for mitigating fouling and corrosion in the utility model；
Fig. 4 is the utility model spray head and the first water injection pipe flange connection schematic diagram.
Icon: 100a- fractionating system；100b- fractionating system；1- fractionating column；The flusher of 2- mitigation fouling and corrosion；
3- heat exchanger；4- air cooler；5- water cooler；6- oil water separator；7- high pressure hot separator；8- cold high pressure separator；10- fractionation
Column overhead distillate pipeline；11- first flow regulating valve；20- air inlet；21- spray head；22- first perforates；23- water outlet；
The first water injection pipe of 24-；25- first circulation waterpipe；26- corrosion inhibiter pipeline；27- neutralizer pipeline；The water outlet of 28- flusher
Pipe；29- second flow regulating valve；30- first pipe；40- second pipe；50- third pipeline；60- tower overhead gas outlet conduit；
61- oil circulating line；62- sulfur-containing waste water outlet conduit；63- water circulating pump；71- condensate make-up piping；80- the first liquid level control
System；The second Liquid level of 81-；200- can,douche；210- first flange piece；220- second flange piece；230- bolt；240- is recessed
Slot；250- nozzle；260- first base；270- second base；280- blind hole.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " first ", " second " etc. are only used for distinguishing description,
It is not understood to indicate or imply relative importance.
In the utility model description, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting "
" connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can be with
It is mechanical connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
Connection inside a element.For the ordinary skill in the art, above-mentioned term can be understood in this reality with concrete condition
With the concrete meaning in novel.
With reference to the accompanying drawing, it elaborates to some embodiments of the utility model, in the absence of conflict, under
The embodiment of category and the feature in embodiment can be combined with each other.
Embodiment one
As shown in Figure 1, a kind of fractionating system 100a provided by the embodiment of the utility model comprising sequentially connected fractionation
Tower 1, the flusher 2 for mitigating fouling and corrosion, heat exchanger 3, air cooler 4, water cooler 5 and oil water separator 6, further
Ground, in above-mentioned fractionating system, fractionating column 1 can slow down for one kind atmospheric and vacuum distillation unit, catalytic fractionator, coking fractional distillation column and
Hydrogenation reaction fractionating column etc..
In conjunction with Fig. 1, Fig. 3 and Fig. 4, the overhead of fractionating column 1 is evaporated using circulation drawing pump by fractionator overhead
Property management line 10 enters distillate in the flusher 2 for mitigating fouling and corrosion from air inlet 20 out, mitigates fouling and corrosion
Flusher 2 includes air inlet 20, can,douche 200, spray head 21, the first water injection pipe 24 and water outlet 23, and spray head 21 is set to and leans on
The position of nearly water outlet 23, and water spraying direction and 20 direction of air inlet are opposite vertically, 200 side wall of can,douche is additionally provided with the first perforation
22, the first water injection pipe 24 passes through the first perforation 22 and connect with spray head 21, while the first water injection pipe 24 will fill the water water source by water pump
It leads in spray head 21.Preferably, air inlet 20 and water outlet 23 are set to the center of 200 upper and lower surface of can,douche, into
Gas direction and water spraying direction are opposite vertically, and reverse contact, sufficiently wash the sour gas in solution fractionation column overhead distillate
With the salts substances in oil, mitigate equipment corrosion.In addition, 200 bottom of can,douche is additionally provided with symmetrical first base 260 and second
Pedestal 270 is placed on can,douche 200 on ground, convenient for balance.
Further, above-mentioned air inlet 20, water outlet 23 and the first perforation 22 are flange hole, respectively with fractionation column
Push up distillate pipeline 10,24 flanged joint of flusher outlet pipe 28 and the first water injection pipe, i.e., air inlet 20, water outlet 23 with
And first perforation 22 on be respectively welded flange plate, with fractionator overhead distillate pipeline 10, flusher outlet pipe 28 and
The flange plate dimensions closure hole welded on first water injection pipe 24 matches.Meanwhile fractionator overhead distillate pipeline 10 and first
First flow regulating valve 11 and second flow regulating valve 29 are respectively equipped on water injection pipe 24, according to fractionator overhead distillate
Uninterrupted controls injection flow, so that water filling can sufficiently dissolve the salts substances in distillate.
Further, 21 quantity of spray head can be one or more, and water spraying direction should be the direction of air inlet 20, spray head 21
When quantity is one, it is preferable that on the central axis in can,douche 200；21 quantity of spray head be two when, be preferably disposed at
The symmetrical position of 200 central axis of can,douche；When 21 quantity of spray head is three, three spray heads 21 form congruent triangles and formation
Plane perpendicular to can,douche 200 central axis, i.e., when 21 quantity of spray head be it is multiple when, preferred arrangement mode is to be formed
Side polygon, and the plane and 200 central axis upright of can,douche of equilateral polygon formation, spray water more evenly, spray field
It is wider.
Further, first perforation the 22, first water injection pipe 24 and spray head 21 quantity can for one or more, and with spray
Head quantity and position are mutually matched.Water pump can be separately provided for each first water injection pipe 24, or in order to simplify structure,
Water pump quantity is one, and the first water injection pipe 24 includes main pipeline and multiple laterals, multiple laterals and multiple spray heads 21
It connects one to one, for the ease of controlling whether to fill the water to spray head 21 and convenient for adjusting the flow of each spray head, further, respectively
Flow control valve is respectively equipped on a lateral.
Further, as shown in figure 4, being welded with first flange piece 210 on the first water injection pipe 24, is welded on spray head 21
Two flange plates 220, first flange piece 210 are matched with the size of second flange piece 220 and blind hole 280, pass through spiral shell
Bolt 230 connects, and 280 quantity of blind hole is consistent with 230 quantity of bolt, and detachable connection is convenient for the installation and inspection of spray head 21
It repairs, further, the material of can,douche 200 and spray head 21 is both preferably C-276, with hydrochloric acid corrosion resistant, erosion corrosion and washes away
Corrosion.
Further, as shown in Figure 3 and Figure 4, spray head 21 is equipped with groove 240, is equipped with multiple nozzles 250 in groove 240,
And be atomizer, under the action of water pump, water is sprayed from nozzle 250 to 20 direction of air inlet, tapered cascade, groove
Angular range is 120 ° to 150 ° when position is opposite in 240 nozzle 250 sprays, be obviously improved fractionator overhead distillate with
The contact area of water.
In order to further mitigate fractionating column 1 tower top and top follow extraction scaling, corrosion situation, in a kind of preferred reality
It applies in mode, fractionating system further includes corrosion inhibiter tank and neutralizer tank, passes through corrosion inhibiter pipeline 26 and neutralizer pipeline 27 respectively
It is connect with fractionator overhead distillate pipeline 10, corrosion inhibiter and neutralizer is mixed with water, and is mixed with distillate together
It closes, to play antisepsis.In the present embodiment, the corrosion inhibiter used is preferably oil-soluble inhibitor.
Fractionator overhead distillate forms the mixing of oil, water and salt after mitigating the flusher 2 of fouling and corrosion
Object, mixture successively pass through first pipe 30, second pipe 40 and third by flusher outlet pipe 28 from water outlet 23
Pipeline 50 enters heat exchanger 3, air cooler 4 and water cooler 5, and the mixture of oil, water and salt after heat exchange enters grease point
From device 6, the gas after oil water separator 6 separates the mixture of oil, water and salt is discharged from tower overhead gas outlet conduit 60, oil warp
It crosses oil circulating line 61 and is back to fractionating column 1, sulfur-containing waste water enters wastewater disposal basin, water-oil separating by sulfur-containing waste water outlet conduit 62
The outlet of device 6 is additionally provided with first circulation waterpipe 25, is connected under the effect of water circulating pump 63 with the first water injection pipe 24, forms water filling
It is recycled, is additionally provided with condensate make-up piping 71 on the first water injection pipe 24, for that can be replenished in time in recirculated water insufficient supply.
In the present embodiment, the operating method and principle of fractionating system 100a is as described below:
Fractionator overhead distillate enters flusher through recycling drawing pump, and fractionator overhead distillate enters flusher
It is sufficiently mixed before with neutralizer and corrosion inhibiter, into after flusher, the water of fractionator overhead distillate and ejection is inversely connect
Touching, sufficiently washing dissolution is soluble in water by the sour gas in fractionator overhead distillate, so that it becomes liquid phase；Dilution initial set
HCl concentration in water, control and adjusting tower top distillate the dew point position of system, and dew point corrosion position is made to move forward；In flushing oil
Ammonium salt prevents underdeposit corrosion.The mixture of oil, water and salt is after heat exchanger, air cooler and water cooler into grease point
From device, oil is separated with the water dissolved with salt, the oil gas isolated cycles back to fractionating column, and the gas phase isolated is from oil water separator
Discharger, the sour water a part isolated enter wastewater disposal basin, and a part of (preferably 40%~50%) recycles.
Embodiment two
Hydrogenation fractionating system 100b provided in this embodiment is similar to first embodiment offer fractionating system basic structure, area
It is not, the fractionating system of the present embodiment further includes high pressure hot separator 7 and cold high pressure separator 8, and high pressure hot separator 7 is set to
After fractionating column 1, after the flusher 2 of mitigation fouling and corrosion is set to high pressure hot separator 7, fractionator overhead distillate pipeline 10
It is connect with high pressure hot separator 7, the flusher 2 of the top gas outlet and mitigation fouling and corrosion of high pressure hot separator 7
Air inlet 20 connects, and mitigates 2 inside of flusher of fouling and corrosion and mitigates fouling in fractionating system 100a and what is corroded rush
2 indistinction of cleaning device.
As shown in Fig. 2, the operating method and principle of the hydrogenation fractionating system 100b of the present embodiment are as described below:
Hydrogenation reaction effluent from fractionating column 1 through heat exchanger 3 heat exchange after enter (the temperature 40-55 of high pressure hot separator 7
DEG C), the hot high score gas come out from the top of high pressure hot separator 7 initially enters the flusher 2 for mitigating fouling and corrosion, is mitigating
The water sprayed in the flusher 2 of fouling and corrosion with spray head 21 inversely contacts, then into cold anticyclone point after air cooler 4 is cooling
From progress oil, gas and water three phase separation in device 8.The recycle hydrogen come out from the top of cold high pressure separator 8 can be recycled, self cooling
The cold high score oil that 8 bottom of high-pressure separator comes out enters cold low separator under the first Liquid level 80, separates from cold anticyclone
The sour water that 8 bottom of device comes out enters sour water tank after going out device.The hot high score oil come out from 7 bottom of high pressure hot separator
After hydraulic turbine recovers energy or thermal low-pressure separators are directly entered under the second Liquid level 81.
In conclusion the utility model is by the way that fractionator overhead distillate to be introduced into external flusher, distillate
It is inversely contacted with the water for being provided close to rinse the ejection of pot bottom spray head, sufficiently washs the acidity in solution fractionation column overhead distillate
Salts substances in gas and oil, mitigate equipment corrosion, carry out grease point using heat exchanger, air cooler and oil water separator
From being again introduced into the oil of fractionating column after oil water separator, there is no salts, to alleviate fractionator overhead and system is followed on top
The situation of fouling, corrosion.Meanwhile flusher component is simple and easy to get, easy to operate, detachable spray head is easy to maintain, cost
Lower, the utility model is convenient for a large amount of industrial production and utilization.
The preferred embodiment of upper described only the utility model, is not intended to limit the utility model, for ability
For the technical staff in domain, various modifications and changes may be made to the present invention.It is all the spirit and principles of the utility model it
Interior, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of flusher for mitigating fouling and corrosion, which is characterized in that including can,douche, the first water injection pipe and be set to institute
The spray head inside can,douche is stated, is equipped with the air inlet connecting with external fractionator overhead distillate pipeline at the top of the can,douche,
The flushing pot sidewall is equipped with the first perforation, and the spray head is provided close to the position for rinsing pot bottom, and water spraying direction is
The air inlet direction, first water injection pipe pass through first perforation and connect with the spray head.
2. a kind of flusher for mitigating fouling and corrosion according to claim 1, which is characterized in that the spray head quantity
For at least one, each spray head is equipped with multiple atomizers, is in the conical surface cascade when water spray, and opposite jet blower sprays folder
Angle is 120 °~150 °.
3. a kind of flusher for mitigating fouling and corrosion according to claim 2, which is characterized in that first water filling
One end that pipe is set to inside the can,douche is the first water injection pipe first end, and is welded with first flange piece, and the spray head is close
One end of first water injection pipe is welded with second flange piece, the shape and sealing hole of the first flange piece and second flange piece
It matches, closes the first flange piece and the second flange piece simultaneously using bolt.
4. it is according to claim 3 it is a kind of mitigate fouling and corrosion flusher, which is characterized in that the air inlet and
First perforation is flange hole, the fractionator overhead distillate pipeline and first water injection pipe respectively with the air inlet
Mouth and the detachable flanged joint of first perforation.
5. a kind of flusher for mitigating fouling and corrosion according to claim 4, which is characterized in that the can,douche bottom
Portion is equipped with water outlet, for oil, water, salt mixture to be discharged.
6. a kind of flusher for mitigating fouling and corrosion according to claim 5, which is characterized in that extracted out including circulation
Pump and water pump, the circulation drawing pump are set on the fractionator overhead distillate pipeline, and the water pump is set to first note
On water pipe.
7. a kind of flusher for mitigating fouling and corrosion according to claim 6, which is characterized in that the fractionation column
It pushes up distillate pipeline and first water injection pipe is equipped with automatic flow control valve.
8. a kind of flusher for mitigating fouling and corrosion according to claim 7, which is characterized in that stored up including neutralizer
Tank and corrosion inhibiter storage tank, the neutralizer storage tank and the corrosion inhibiter storage tank connect with the fractionator overhead distillate pipeline respectively
It connects.
9. a kind of fractionating system, which is characterized in that a kind of mitigation fouling including fractionating column and claim 1-8 any one and
The flusher of corrosion, the fractionator overhead distillate pipeline and the mitigation fouling are connected with the flusher of corrosion.
10. a kind of fractionating system according to claim 9, which is characterized in that further include:
Heat exchanger, air cooler and/or water cooler, and successively connect with the flusher pipeline；
Oil water separator, and connect with the air cooler and/or water cooler pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896637.3U CN209210722U (en) | 2018-11-16 | 2018-11-16 | A kind of flusher and fractionating system mitigating fouling and corrosion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821896637.3U CN209210722U (en) | 2018-11-16 | 2018-11-16 | A kind of flusher and fractionating system mitigating fouling and corrosion |
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| CN209210722U true CN209210722U (en) | 2019-08-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112546657A (en) * | 2020-11-11 | 2021-03-26 | 润泰化学（泰兴）有限公司 | A preliminary distillation tower for producing 2,2, 4-trimethyl-3 hydroxypentanoic acid isobutyl ester |
| CN112779046A (en) * | 2020-11-06 | 2021-05-11 | 中国石油天然气股份有限公司 | Device and method for preventing salt deposition corrosion of stripping tower of oil refining device |
| CN113698955A (en) * | 2020-05-21 | 2021-11-26 | 中国石油天然气集团有限公司 | Aviation kerosene hydrogenation reaction product treatment system |
-
2018
- 2018-11-16 CN CN201821896637.3U patent/CN209210722U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113698955A (en) * | 2020-05-21 | 2021-11-26 | 中国石油天然气集团有限公司 | Aviation kerosene hydrogenation reaction product treatment system |
| CN112779046A (en) * | 2020-11-06 | 2021-05-11 | 中国石油天然气股份有限公司 | Device and method for preventing salt deposition corrosion of stripping tower of oil refining device |
| CN112546657A (en) * | 2020-11-11 | 2021-03-26 | 润泰化学（泰兴）有限公司 | A preliminary distillation tower for producing 2,2, 4-trimethyl-3 hydroxypentanoic acid isobutyl ester |
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