CN202705312U - Heavy oil atomizing nozzle - Google Patents
Heavy oil atomizing nozzle Download PDFInfo
- Publication number
- CN202705312U CN202705312U CN 201220336904 CN201220336904U CN202705312U CN 202705312 U CN202705312 U CN 202705312U CN 201220336904 CN201220336904 CN 201220336904 CN 201220336904 U CN201220336904 U CN 201220336904U CN 202705312 U CN202705312 U CN 202705312U
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- heavy oil
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- nozzle
- mixing section
- atomizing nozzle
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Abstract
The utility model relates to a heavy oil atomizing nozzle comprising an injection pipe and a bushing, wherein the injection pipe comprises a mixing section, a conveyor section and a sprayer in sequence along the flow direction of material flow in the injection pipe, the inner diameter of the mixing section is larger than that of the conveyor section, the conveyor section and the sprayer are contained in the bushing, clearance exists between the inner wall of the bushing and the outer walls of the conveyor section and the sprayer, the mixing section is provided with a steam inlet and a heavy oil inlet, both the lateral part and the top of the sprayer are provided with openings, the lateral part of the bushing is provided with a steam inlet, and the top of the bushing is provided with a nozzle opening. According to the heavy oil atomizing nozzle disclosed by the utility model, not only the heavy oil is prevented from coking because of the temperature rise, but also the atomizing effect of the heavy oil is improved.
Description
Technical field
The utility model relates to a kind of heavy oil atomizing nozzle.
Background technology
In refining equipment, the effect of feed nozzle be will device stock oil be atomized into tiny drop and spray into reactor, contact with the solid particulate thermal barrier, heat up and react.The quality of nozzle atomization effect directly affects the heavy oit pyrolysis effect, has developed the nozzle of various structural shapes for full scale plant heavy oil atomizing nozzle.The nozzle of industrial catalyticing cracking device does not go deep in the beds on device, and these nozzles are being designed to carry out the structure of heavy oil upgrading amount when being 2-10kg/h, when carrying out the middle-scale device experiment, because the less cause of experimental installation, the heavy oil nozzle generally puts in bed from bottom of device and contacts with high temperature catalyst, but not nozzle is contained on the sidewall of device, avoid heavy oil to be sprayed onto on the wall of reactor.In medium-sized continuous apparatus, nozzle puts in reactor bed a segment distance, because furol viscosity is high, when heavy oil flows in entrainment with steam, part heavy oil is adherent to flow, going down for a long time because nozzle outer wall contact high temperature catalyst easily causes heavy oil temperature to raise coking phenomenon occurs, and then plug nozzle, causes device to turn round down.In the medium-sized experimental installation of heavy oil, especially when processing high viscosity inferior heavy oil, assurance nozzle noncoking obstruction seems and is even more important.Heavy oil upgrading technique for nozzle being put in the fluidized-bed bed also requires the nozzle entrance section is protected, and causes nozzle inner fluid temperature to raise and coking to prevent that nozzle from contacting with high temperature catalyst.Therefore, the nozzle of developing a kind of suitable heavy oil fluid catalytic cracking/cracking has great importance.
The utility model content
The purpose of this utility model is to cause easily the defective of coking and blocking in order to overcome existing heavy oil atomizing nozzle, and a kind of improved heavy oil atomizing nozzle is provided.
The utility model provides a kind of heavy oil atomizing nozzle, wherein, described heavy oil atomizing nozzle comprises spray tube and sleeve pipe, logistics in described spray tube flows to, described spray tube comprises mixing section successively, transportation section and shower nozzle, the internal diameter of described mixing section is greater than the internal diameter of described transportation section, described transportation section and described shower nozzle are contained in the described sleeve pipe, and has the gap between the outer wall of the inwall of described sleeve pipe and described transportation section and described shower nozzle, described mixing section is provided with steam-in and heavy oil entrance, sidepiece and the top of described shower nozzle are provided with opening, and the sidepiece of described sleeve pipe is provided with the steam-in, and the top of described sleeve pipe is provided with nozzle opening.
Preferably, described spray tube also comprises the undergauge section, and described undergauge section is arranged between described mixing section and the described transportation section.
Preferably, be provided with diverting device in the described mixing section, described diverting device is divided into two zones that are interconnected with described mixing section.Described diverting device is preferably swirl flow nozzle.For described swirl flow nozzle, the middle part of described swirl flow nozzle preferably is provided with the hole, Lavalle, and the sidepiece of described swirl flow nozzle preferably is provided with spiral groove.
More preferably, in described mixing section, described diverting device is near an end of described transportation section.
In described spray tube, the internal diameter of described mixing section is preferably 2-20:1 with the ratio of the internal diameter of described transportation section.
For described shower nozzle, the logistics in described spray tube flows to, and described shower nozzle preferably comprises hole enlargement zone and undergauge zone successively, and the opening of shower nozzle sidepiece preferably is arranged on the sidewall in described hole enlargement zone.
More preferably, the logistics in described spray tube flows to, and the height in described hole enlargement zone accounts for the 30-60% of the total height of described shower nozzle.
More preferably, the logistics in described spray tube flows to, and the top of described sleeve pipe is the undergauge section, and the parallel sidewalls at the top of the sidewall in described undergauge zone and described sleeve pipe.
According to described heavy oil atomizing nozzle of the present utility model; in the process of using; the steam that injects by the steam-in of cover tube side part can shield to the transportation section of spray tube and the heavy oil in the shower nozzle, thereby can prevent heavy oil temperature from raising and the generation coking.
And, can improve the heavy oil atomizing effect according to described heavy oil atomizing nozzle of the present utility model, so that the droplet of ejection is more tiny and even, its principle of work is: a part of steam that injects by the steam-in of cover tube side part can enter shower nozzle via the opening of shower nozzle sidepiece, wherein gas-oil mixture is impacted, another part steam further impacts the gas-oil mixture that the opening by the shower nozzle top sprays at the nozzle opening place that is arranged at the sleeve pipe top simultaneously, so that the drop of heavy oil significantly diminishes through after twice impact; And, in described spray tube, the mixture of steam and heavy oil is entered the transportation section of minor diameter by large diameter mixing section, so that the pressure of the gas-oil mixture of steam and heavy oil increases, then gas-oil mixture is by being arranged at the nozzle opening ejection at sleeve pipe top, and the pressure of gas-oil mixture reduces suddenly, and volume expands suddenly, the drop of heavy oil can break, thereby produces tiny and uniform droplet.
Other feature and advantage of the present utility model will partly be described in detail in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and consists of the part of specification sheets, is used from explanation the utility model with following embodiment one, but does not consist of restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of heavy oil atomizing nozzle of the present utility model;
Fig. 2 is the structural representation of a kind of preferred implementation of heavy oil atomizing nozzle of the present utility model;
Fig. 3 is the partial schematic diagram at the top of heavy oil atomizing nozzle of the present utility model.
Description of reference numerals
1 spray tube, 2 sleeve pipes, 3 diverting devices, 11 mixing sections
13 shower nozzles, 14 steam-ins, 12 transportation sections, 15 heavy oil entrances
16 openings, 17 openings, 18 undergauge sections, 19 hole enlargements zone
Hole, 31 Lavalle, 20 undergauges zone 32 spiral grooves
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.Should be understood that embodiment described herein only is used for description and interpretation the utility model, is not limited to the utility model.
In the utility model, do not doing in the situation of opposite explanation, " bottom ", " top " and " sidepiece " all are based on the interior logistics flow direction of spray tube, wherein, " bottom " refers to the end of the upstream that the logistics in the spray tube flows to, " top " refers to the end in the downstream that the logistics in the spray tube flows to, and " sidepiece " refers to the part between top and the bottom.
As illustrated in fig. 1 and 2, heavy oil atomizing nozzle of the present utility model comprises spray tube 1 and sleeve pipe 2, logistics in described spray tube 1 flows to, described spray tube 1 comprises mixing section 11 successively, transportation section 12 and shower nozzle 13, the internal diameter of described mixing section 11 is greater than the internal diameter of described transportation section 12, described transportation section 12 and described shower nozzle 13 are contained in the described sleeve pipe 2, and has the gap between the outer wall of the inwall of described sleeve pipe 2 and described transportation section 12 and described shower nozzle 13, described mixing section 11 is provided with steam-in 14 and heavy oil entrance 15, the sidepiece of described shower nozzle 13 is provided with opening 16, the top of described shower nozzle 13 is provided with opening 17, the sidepiece of described sleeve pipe 2 is provided with steam-in 21, and the top of described sleeve pipe 2 is provided with nozzle opening 22.
In described heavy oil atomizing nozzle, internal diameter by making described mixing section 11 is greater than the internal diameter of described transportation section 12, so that from the gas-oil mixture of the heavy oil of described mixing section 11 and steam after entering described transportation section 12, pressure and velocity of flow can increase, thereby can impel heavy oil and steam in the gas-oil mixture evenly to mix.In the preferred case, the internal diameter of described mixing section 11 is 2-20:1, more preferably 2-10:1 with the ratio of the internal diameter of described transportation section 12.
In described heavy oil atomizing nozzle, for described mixing section 11 be connected the connection of transportation section 12, for example can as shown in Figure 1, directly described mixing section 11 be connected with described transportation section 12.Yet in this case, there is the dead angle in described mixing section 11 with the junction of described transportation section 12, and heavy oil can be assembled at this place, dead angle.Therefore, for fear of the gathering of heavy oil in mixing section 11, preferably, as shown in Figure 2, between described mixing section 11 and described transportation section 12, undergauge section 18 is set.The height of described undergauge section 18 (also being that the top of described mixing section 11 is to the distance between the bottom of described transportation section 12) can be 1:0.1-10 with the ratio of the internal diameter of described mixing section 11, is preferably 1:0.5-5.
When being provided with undergauge section 18 between described mixing section 11 and the described transportation section 12, the bottom of described sleeve pipe preferably is fixedly connected on the outer wall of described undergauge section 18, and the described mode that is fixedly connected with for example can be welding.
In described heavy oil atomizing nozzle, for the gas-oil mixture that impels heavy oil and steam evenly mixes, thereby further improve atomizing effect, the described mixing section 11 interior diverting devices 3 that preferably are provided with, described diverting device 3 is divided into two zones that are interconnected with described mixing section 11.In the preferred case, described diverting device 3 swirl flow nozzles.More preferably, the middle part of described swirl flow nozzle is provided with hole, Lavalle 31, and the sidepiece of described swirl flow nozzle is provided with spiral groove 32.The middle part of described swirl flow nozzle refers to central axis part on every side parallel or overlapping with the central axis (logistics in described spray tube 1 flows to) of described spray tube 1 in described swirl flow nozzle.When the sidepiece that is provided with hole, Lavalle 31 and described swirl flow nozzle when the middle part of described swirl flow nozzle is provided with spiral groove 32, hole, described Lavalle 31 and described spiral groove 32 can form liquid film with liquid heavy oil effectively, liquid film can be torn into fluid column and/or drop by the high velocity vapor that steam-in 14 is injected, thereby heavy oil is evenly mixed with steam.In described swirl flow nozzle, the number of described spiral groove 32 can be 2-6.The size in hole, described Lavalle 31 can be determined by the treatment capacity of heavy oil.Preferably, the minimum-value aperture in hole, described Lavalle 31 is 1:5-100, more preferably 1:10-50 with the ratio of the internal diameter of described mixing section 11; The maximum diameter of hole in hole, described Lavalle 31 is 1:1.5-10, more preferably 1:2-5 with the ratio of the internal diameter of described mixing section 11.
Further preferably, in described mixing section 11, described diverting device 3 is near an end of described transportation section 12.More preferably, described diverting device 3 accounts for the 50-80% of the total height (being described mixing section 11 distance from bottom to top) of described mixing section 11 to the distance of the bottom of described mixing section 11.
In described heavy oil atomizing nozzle, described transportation section 12 and shower nozzle 13 are contained in the described sleeve pipe 2.The external diameter of described transportation section 12 can be 1:1.1-2 with the ratio of the internal diameter of described sleeve pipe 2, is preferably 1:1.1-1.5.
As Figure 1-3, for described shower nozzle 13, the logistics in described spray tube 1 flows to, and described shower nozzle 13 preferably comprises hole enlargement zone 19 and undergauge zone 20 successively, and the opening 16 of shower nozzle 13 sidepieces is arranged on the sidewall in described hole enlargement zone 19.In this case, gas-oil mixture from described transportation section 12 reduces pressure and reduction of speed in described hole enlargement zone 19 first, in described undergauge zone 20, pressurize again and accelerate, can improve the velocity contrast of heavy oil and steam, thereby impel heavy oil evenly to mix with steam and atomize.
In order further to impel the heavy oil uniform atomizing, the opening 16 of shower nozzle 13 sidepieces is preferably a plurality of, and more preferably 2-20, more preferably 3-15.When the opening 16 of shower nozzle 13 sidepieces when being a plurality of, the opening 16 of shower nozzle 13 sidepieces preferably be evenly distributed on described hole enlargement zone 19 sidewall around.The height in described hole enlargement zone 19 (i.e. logistics in the described spray tube 1 flows to upstream extremity from described hole enlargement zone 19 to the distance the downstream end) preferably accounts for the 10-80% of the total height (i.e. logistics in the described spray tube 1 flows to upstream extremity from described shower nozzle 13 to the distance the opening 17 at shower nozzle 13 tops) of described shower nozzle 13, more preferably 30-60%.Further, as shown in Figure 3, the sidewall in described hole enlargement zone 19 and the angle β of horizontal direction can be 1-45 °, are preferably 10-45 °.
As shown in Figure 3, the logistics in described spray tube 1 flows to, and the top of described sleeve pipe 2 is preferably the undergauge section.This undergauge section can improve the speed of the vapour stream that is injected by steam-in 21, so that this vapour stream is with the gas-oil mixture of higher velocity shock by opening 17 ejections at shower nozzle 13 tops, thereby can further improve the atomizing effect of heavy oil, and improve the mixing uniformity of heavy oil and steam.Still more preferably, the parallel sidewalls at the top of the sidewall in described undergauge zone 20 and described sleeve pipe 2.The sidewall in the undergauge zone 20 at the top of described sleeve pipe 2 and the angle α of horizontal direction can be 10-70 °, are preferably 20-70 °, more preferably 30-60 °.
According to described heavy oil atomizing nozzle of the present utility model, in a kind of preferred implementation, as shown in Figure 1, described heavy oil atomizing nozzle comprises spray tube 1 and sleeve pipe 2, logistics in described spray tube 1 flows to, described spray tube 1 comprises mixing section 11, transportation section 12 and shower nozzle 13 successively, and the internal diameter of described mixing section 11 is greater than the internal diameter of described transportation section 12.Be provided with swirl flow nozzle 3 in the described mixing section 11, the middle part of described swirl flow nozzle 3 is provided with hole, Lavalle 31, and the sidepiece of described swirl flow nozzle 3 is provided with spiral groove 32, and described swirl flow nozzle 3 is near an end of described transportation section 12.Described transportation section 12 directly is connected with described mixing section 11, the outer wall welding at the top of the bottom of described sleeve pipe 2 and described mixing section 11.Described mixing section 11 is provided with steam-in 14 and heavy oil entrance 15.Described transportation section 12 and described shower nozzle 13 are contained in the described sleeve pipe 2, and have the gap between the outer wall of the inwall of described sleeve pipe 2 and described transportation section 12 and described shower nozzle 13.The sidepiece of described shower nozzle 13 is provided with opening 16, and the top of described shower nozzle 13 is provided with opening 17.Logistics direction in the described spray tube 1, described shower nozzle 13 comprises hole enlargement zone 19 and undergauge zone 20 successively, and shower nozzle 13 side mouth 16 are arranged on the sidewall in described hole enlargement zone 17, and the top of described sleeve pipe 2 is the undergauge section.In this preferred implementation, in the process that described heavy oil atomizing nozzle uses, heavy oil injects described mixing section 11 with lower speed by heavy oil entrance 15, steam injects described mixing section 11 with higher speed by steam-in 14, hole, described Lavalle 31 and described spiral groove 32 can form liquid film with heavy oil effectively, and high velocity vapor can be torn into fluid column/drop with liquid film.Then, the gas-oil mixture of heavy oil and steam enters described transportation section 12, because the internal diameter less of transportation section 12, the pressure of gas-oil mixture and flow velocity increase, so that fluid column/drop is shredded into tiny drop.Simultaneously, by steam-in 21 injecting steams, steam enters described shower nozzle 13 by the opening 16 of shower nozzle sidepiece, and the gas-oil mixture from transportation section 12 is impacted; And, regional by passing through successively hole enlargement zone and undergauge from the gas-oil mixture of transportation section 12, can improve the velocity contrast of heavy oil and steam, thereby impel fluid column/drop to carry out fragmentation, so that heavy oil evenly mixes with steam and atomizes.Then, gas-oil mixture compiles with the vapour stream that is injected by steam-in 21 by opening 17 ejections at shower nozzle 13 tops, and by nozzle opening 22 ejections.
In a kind of more preferably embodiment, as shown in Figure 2, described heavy oil atomizing nozzle also comprises undergauge section 18, and described undergauge section 18 is arranged between described mixing section 11 and the described transportation section 12; The outer wall welding of the bottom of described sleeve pipe 2 and described undergauge section 18.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in the above-mentioned embodiment; in technical conceive scope of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
Need to prove that in addition each the concrete technical characterictic described in above-mentioned embodiment in reconcilable situation, can make up by any suitable mode.For fear of unnecessary repetition, the utility model is to the no longer separately explanation of various possible array modes.
In addition, also can carry out arbitrary combination between the various embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (10)
1. heavy oil atomizing nozzle, it is characterized in that, described heavy oil atomizing nozzle comprises spray tube (1) and sleeve pipe (2), logistics in described spray tube (1) flows to, described spray tube (1) comprises mixing section (11) successively, transportation section (12) and shower nozzle (13), the internal diameter of described mixing section (11) is greater than the internal diameter of described transportation section (12), described transportation section (12) and described shower nozzle (13) are contained in the described sleeve pipe (2), and has the gap between the outer wall of the inwall of described sleeve pipe (2) and described transportation section (12) and described shower nozzle (13), described mixing section (11) is provided with steam-in (14) and heavy oil entrance (15), the sidepiece of described shower nozzle (13) is provided with opening (16), the top of described shower nozzle (13) is provided with opening (17), the sidepiece of described sleeve pipe (2) is provided with steam-in (21), and the top of described sleeve pipe (2) is provided with nozzle opening (22).
2. heavy oil atomizing nozzle according to claim 1 is characterized in that, described spray tube (1) also comprises undergauge section (18), and described undergauge section (18) is arranged between described mixing section (11) and described transportation section (12).
3. heavy oil atomizing nozzle according to claim 1 and 2 is characterized in that, is provided with diverting device (3) in the described mixing section (11), and described diverting device (3) is divided into two zones that are interconnected with described mixing section (11).
4. heavy oil atomizing nozzle according to claim 3 is characterized in that, described diverting device (3) is swirl flow nozzle.
5. heavy oil atomizing nozzle according to claim 4 is characterized in that, the middle part of described swirl flow nozzle is provided with hole, Lavalle (31), and the sidepiece of described swirl flow nozzle is provided with spiral groove (32).
6. heavy oil atomizing nozzle according to claim 3 is characterized in that, in described mixing section (11), described diverting device (3) is near an end of described transportation section (12).
7. heavy oil atomizing nozzle according to claim 1 and 2 is characterized in that, the ratio of the internal diameter of the internal diameter of described mixing section (11) and described transportation section (12) is 2-20:1.
8. heavy oil atomizing nozzle according to claim 1 and 2, it is characterized in that, logistics in described spray tube (1) flows to, described shower nozzle (13) comprises hole enlargement zone (19) and undergauge zone (20) successively, and the opening (16) of shower nozzle (13) sidepiece is arranged on the sidewall in described hole enlargement zone (19).
9. heavy oil atomizing nozzle according to claim 8 is characterized in that, the logistics in described spray tube (1) flows to, and the height in described hole enlargement zone (19) accounts for the 30-60% of the total height of described shower nozzle (13).
10. heavy oil atomizing nozzle according to claim 8, it is characterized in that, logistics in described spray tube (1) flows to, and the top of described sleeve pipe (2) is the undergauge section, and the parallel sidewalls at the top of the sidewall in described undergauge zone (20) and described sleeve pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336904 CN202705312U (en) | 2012-07-11 | 2012-07-11 | Heavy oil atomizing nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220336904 CN202705312U (en) | 2012-07-11 | 2012-07-11 | Heavy oil atomizing nozzle |
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| CN202705312U true CN202705312U (en) | 2013-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220336904 Expired - Lifetime CN202705312U (en) | 2012-07-11 | 2012-07-11 | Heavy oil atomizing nozzle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815779A (en) * | 2015-05-14 | 2015-08-05 | 神华集团有限责任公司 | Gaseous polymerization system and nozzle device thereof |
| CN107088484A (en) * | 2017-06-28 | 2017-08-25 | 迈德乐喷雾系统广州有限公司 | A kind of small air atomizer |
| CN109382046A (en) * | 2017-08-11 | 2019-02-26 | 中国石油天然气股份有限公司 | fixed fluidized bed reactor feeding system |
| CN110964555A (en) * | 2018-09-30 | 2020-04-07 | 中国石油天然气股份有限公司 | Atomizing nozzle for lifting pipe |
-
2012
- 2012-07-11 CN CN 201220336904 patent/CN202705312U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104815779A (en) * | 2015-05-14 | 2015-08-05 | 神华集团有限责任公司 | Gaseous polymerization system and nozzle device thereof |
| CN107088484A (en) * | 2017-06-28 | 2017-08-25 | 迈德乐喷雾系统广州有限公司 | A kind of small air atomizer |
| CN109382046A (en) * | 2017-08-11 | 2019-02-26 | 中国石油天然气股份有限公司 | fixed fluidized bed reactor feeding system |
| CN109382046B (en) * | 2017-08-11 | 2021-03-09 | 中国石油天然气股份有限公司 | Fixed fluidized bed reactor feeding system |
| CN110964555A (en) * | 2018-09-30 | 2020-04-07 | 中国石油天然气股份有限公司 | Atomizing nozzle for lifting pipe |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130130 |