CN102827628B - Heavy oil catalytic cracking feeding atomizing nozzle - Google Patents
Heavy oil catalytic cracking feeding atomizing nozzle Download PDFInfo
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Abstract
The invention belongs to the technical field of petroleum refining and provides a heavy oil catalytic cracking feeding atomizing nozzle. The heavy oil catalytic cracking feeding atomizing nozzle comprises an inner tube (5), an outer tube (3), a shower nozzle (1), a raw material oil inlet (14) and a primary steam inlet (15), a plurality of primary steam nozzles (11) surrounding a raw oil nozzles (12) are communicated with the primary steam inlet (15), the first stage pulverization is carried out on part of raw oil in a mixing chamber (10),, and other part of the raw oil enters the inner tube (5) to conduct the second stage pulverization. A secondary steam spraying hole I (2-2) conducts the third stage pulverization on the raw oil. The heavy oil catalytic cracking feeding atomizing nozzle solves the problem that oil film aggregation exists on an inner wall of a partial position inside the nozzle, removes major-diameter liquid drops, obtains atomization grain sizes required by a catalytic cracking process, and avoids coking of the raw oil on the inner wall of a riser reactor above the nozzle.
Description
Technical field
The invention belongs to petroleum refining technology field, relate generally to a kind of Feed Atomizing Nozzles For Heavy Oil Fcc Unit.
Background technology
Raw material oil feeding atomizing nozzle is a visual plant of refining of petroleum field catalytic cracking unit, its effect is: first that stock oil is broken, atomization is a large amount of fine drop, again raw material oil droplet is injected in catalytic cracking riser reactor, with the catalyst mix in riser reactor, reaction.
In the last few years, for the raw material oil feeding atomizing nozzle of catalytic cracking unit, domestic mainly contain wikipedia type LPC type (90209410.6), adopt the KH type (89207961.9,200420066089.3) of the two wikipedia type of supersonic atomization steam, there is the BWJ type (98233035.9) of cyclone structure, there is the UPC-ɑ type (00109776.8) of porous steam distributor and there is the broad variety such as CCK type (99219391.5) of secondary-atomizing structure; External similar technique then mainly contains in the target spray nozzle of S & W company, Uop Inc.'s exploitation establishes many orifice types Optimix nozzle of porous steam distributor, Mobile company and Kellogg company to establish the ATOMAX nozzle of porous steam distributor and baffle plate, the feed nozzle with nozzle cover that can form flat jet of ABB Lummus company exploitation and the nozzle being provided with secondary-atomizing steam of Exxon company exploitation in developing jointly.
But in actual use, said nozzle more or less also exists following problem: one is that the atomizing effect of stock oil needs to be improved further; Two is that the stock oil be injected in riser reactor by nozzle occurs coking phenomenon at riser tube inwall; The raw material oil droplet jet velocity three to be sprayed by nozzle, be atomized is too high, makes catalyst breakage serious; Four is that atomizing steam and stock oil influence each other at the inlet zone of introducing nozzle, and even occur when atomizing steam (or stock oil) pressure surge, stock oil (or atomizing steam) cannot introduce the situation of nozzle.
The present inventor, by research, has found the mechanism of riser reactor inwall coking.Its reason is: after the stock oil be atomized is injected to riser tube, under the acting in conjunction of catalyzer, pre-lift vapour, a negative pressuren zone will be formed between riser tube inwall and stock oil jet, negative pressure produces injection backflow effect to stock oil itself and catalyzer, makes the two overstand, thus forms coking at riser tube inwall, and the coke button on riser tube inwall is once be formed, will be more long-pending larger, and then block riser tube runner, even need stopping production to carry out coke cleaning.
200410010045.3 patent applications that the present inventor proposes as one of contriver, propose to arrange three kinds of dissimilar secondary steam spray orifices with the atomizing effect of strengthening to stock oil; And steam fumarole is set on shower nozzle, thus between riser reactor inwall and stock oil jet, form steam curtain screen, with suppress stock oil to be injected in riser tube after injection backflow effect to self, reduce the coking of riser tube inwall, and the mixing of promoting catalyst and stock oil.
Found by research, the weak point of 200410010045.3 is mainly in two: one is the gathering that the inwall place of nozzle interior regional area still exists oil film, and namely the atomizing effect of 200410010045.3 still can improve further.Then the setting of 200410010045.3 nozzle position steam fumaroles in addition, make it to the change of operating parameters comparatively " sensitivity ", because 200410010045.3 steam fumaroles are communicated with secondary steam room, when fluctuation appears in vapor pressure, flow, when even there is fluctuation in stock oil flow, all may cause catalyzer suck-back, even cause the wearing and tearing of steam fumarole.In addition, the object that 200410010045.3 shower nozzle places arrange steam fumarole is that suppression stock oil is injected to the injection backflow effect afterwards to self in riser tube, and its steam fumarole is positioned at 5 ~ 30mm place above material oil outlet usually.And research shows, the prime area producing the backflow of this injection is positioned at the edge of " upper part " of material oil outlet jet itself, i.e. nozzle centerline and the part between extended line and riser tube inwall thereof.Therefore steam fumarole is located at not " radical cure " this injection backflow above material oil outlet, and " upper part " that steam fumarole should be positioned as close to material oil outlet just may realize suppressing this burst of injection backflow to greatest extent.
Summary of the invention
The object of the invention is to propose a kind of Feed Atomizing Nozzles For Heavy Oil Fcc Unit, the clustering phenomena of the oil film that the inwall place that can overcome nozzle interior local location exists, and then eliminate major diameter drop, obtain the atomizing particle size required by catalytic cracking process, and the coking phenomenon of stock oil riser reactor inwall above nozzle can be overcome.
The present invention takes following technical scheme to realize its invention task:
A kind of Feed Atomizing Nozzles For Heavy Oil Fcc Unit, described nozzle includes interior pipe, outer tube, shower nozzle, stock oil entrance and primary steam entrance; Annular cavity looping secondary steam room between interior pipe and outer tube also arranges secondary steam entrance; Described interior pipe has contraction section, aditus laryngis section and expansion section, and the front end of shower nozzle has jet exit; Described stock oil entrance is communicated with on collecting tubule room, and is communicated with the mixing section of truncated cone-shaped by stock oil spout; Primary steam spout is communicated with described primary steam entrance, described primary steam spout is the multiple of collar stock oil spout setting, make stock oil and primary atomization steam when initial contact, steam " occupies " borderline region, reduce the gathering of large drop in Bian Bi region, strengthening atomizing effect; In mixing section, a part of stock oil is carried out first time by primary steam at a high speed and impacts, is broken for mist of oil, the formation first step is atomized, another part stock oil " is surrounded " by steam, and forming outside is steam, and center is that the flow pattern of steam and mist of oil mixture enters in interior pipe; In interior pipe, by primary steam, stock oil further to be impacted, broken, make stock oil obtain second stage atomization; Cavity in secondary steam spray orifice I is corresponding between pipe expansion section exit end and jet exit is arranged, a part of secondary steam is made to flow to interior pipe expansion section exit end via interior pipe mix with the stock oil in cavity between jet exit with above-mentioned, it is atomized further, i.e. third stage atomization; Secondary steam spray orifice II corresponding nozzle outlet inside wall upper-end part of driving is arranged, a part of secondary steam is made to be injected into outlet inside wall upper end position by secondary steam spray orifice II, together riser reactor is entered into by jet exit with the secondary steam of rest part, primary steam and stock oil, between riser reactor inwall and stock oil jet, form steam curtain screen by the steam of secondary steam spray orifice II, prevent stock oil coking on riser reactor wall.
Described secondary steam spray orifice I is circumferential multiple; Described secondary steam spray orifice II is for being distributed in the multiple of upper semicircumference, and secondary steam spray orifice II and secondary steam spray orifice I are interspersed.
The axis of described primary steam spout and the angle β of interior tubular axis line are 0 ゜ ~ 30 ゜, make primary steam form ejector action to stock oil, carry stock oil " successfully " in interior pipe secretly.
The secondary steam spray orifice I be arranged between interior pipe expansion section exit end and jet exit has three classes, and the angle between the axis of secondary steam spray orifice I described in three classes and interior tubular axis line is respectively 6 ゜ ~ 15 ゜, 15 ゜ ~ 40 ゜, 45 ゜ ~ 80 ゜.
Angle between the axis of described secondary steam spray orifice II and interior tubular axis line is 10 ゜ ~ 55 ゜.
The shape of described stock oil spout is for being circle or rectangle.
The primary steam spout and the stock oil spout that are arranged on mixing-chamber inlet end can adopt override formats or direct form of holing.
With the secondary steam spray orifice I that interior pipe axis angle Φ 2 is 6 ゜ ~ 15 ゜, effect makes secondary steam be injected in material oil outlet medullary ray two ends, to destroy the oil film that stock oil is formed in this position.
With the secondary steam spray orifice I that interior pipe axis angle Φ 1 is 15 ゜ ~ 40 ゜, effect makes secondary steam be injected on shower nozzle inwall, to destroy the oil film that stock oil is formed in this position.
With the secondary steam spray orifice I that interior pipe axis angle Φ 3 is 45 ゜ ~ 80 ゜, effect makes secondary steam be injected between interior pipe expansion section exit end and jet exit, to the stock oil impact atomization again through mixing section atomization and the atomization of interior pipe.
In order to prevent the stock oil after spraying from piling up at nozzle exit area, the outside of described jet exit has the acute angle edge of a knife of arc.
In order to make to keep optimum velocity from the stock oil of jet exit ejection, prevent the stock oil spraying into riser tube from producing backflow because speed is too high, its spread angle of the expansion section of interior tube chamber is 2 ゜ ~ 3 ゜; Its angle of throat of the contraction section of interior tube chamber is 2 ゜ ~ 3 ゜.
In order to weaken the impact of riser reactor catalyst particles to spray-nozzle type sprinkler head bottom, the bottom of described shower nozzle is an inclined-plane, and the angle σ between this inclined-plane and interior tubular axis line is 20 ゜ ~ 40 ゜.
The present invention proposes a kind of Feed Atomizing Nozzles For Heavy Oil Fcc Unit, adopts above technical scheme, produces following beneficial effect to be:
1, enhance atomizing effect: the mixing section that have employed " drum oil " form, stock oil " successfully " can be carried secretly in interior pipe on the one hand, in mixing section, first time impact, fragmentation be carried out to stock oil simultaneously, form first step atomization.The mixing section of " drum oil " form to also provide enhanced in interior pipe steam to the crushing effect of stock oil, define second stage atomization, optimize the angle in secondary steam hole, the oil film effectively destroying shower nozzle inwall is piled up, eliminate major diameter drop, thus reach the atomizing particle size required by catalytic cracking process.
2, secondary steam spray orifice II on multiple distribution upper semicircumference is set, camber line place to jet exit inwall upper end is injected in order to make secondary steam, and then together spray into in riser reactor on stock oil top and stock oil, thus more effectively form steam curtain screen, suppress the backflow of stock oil injection, prevent the coking of stock oil on riser reactor wall.
Accompanying drawing explanation
Fig. 1 is structure sectional view of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the C-C sectional view of Fig. 1
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the structural representation of secondary steam spray orifice I.
Fig. 6 is the structural representation of secondary steam spray orifice I.
Fig. 7 is the structural representation of secondary steam spray orifice I.
Fig. 8 is the structural representation of secondary steam spray orifice II.
Fig. 9 is the vertical view of Fig. 5.
In figure: 1, shower nozzle, 2-2, secondary steam spray orifice I, 2-1, secondary steam spray orifice II, 3, outer tube, 4, annular secondary steam room, 5, interior pipe, 6, expansion section, 7, aditus laryngis section, 8, contraction section, 9, secondary steam entrance, 10, mixing section, 11, primary steam spout, 12, stock oil spout, 13, collecting tubule room, 14, stock oil entrance, 15, primary steam entrance, 17, inclined-plane, 18, the acute angle edge of a knife, 19, jet exit.
Embodiment
With specific embodiment, the present invention is illustrated by reference to the accompanying drawings;
As shown in Figure 1, and with reference to Fig. 2, Fig. 3, Fig. 4, a kind of Feed Atomizing Nozzles For Heavy Oil Fcc Unit, described nozzle includes interior pipe 5, outer tube 3, shower nozzle 1, stock oil entrance 14 and primary steam entrance 15; Annular cavity looping secondary steam room 4 between interior pipe 5 and outer tube 3 also arranges secondary steam entrance 9; Described interior pipe 5 has contraction section 6, aditus laryngis section 7 and expansion section 8, and the front end of shower nozzle 1 has jet exit 19; Described stock oil entrance 14 is communicated with on collecting tubule room 13, and is communicated with the mixing section 10 of truncated cone-shaped by stock oil spout 12; Be communicated with primary steam spout 11 with described primary steam entrance 15, described primary steam spout 11 is the multiple of collar stock oil spout 12 setting, i.e. steam nozzle " encirclement " stock oil spout, forms one of the present invention " drum oil " form; " drum oil " form why is adopted to be that the feature moved according to vapour, liquid two-phase is determined---liquid carries current downflow in high velocity vapor, if liquid flow rate is constant, increase velocity of steam gradually, bubble flow, slug flow, laminar flow, wavy flow, slug flow, annular-flow and spray flow seven kinds of flow patterns will be produced successively; Obviously, the most elementary object that spray flow is atomizing nozzle for feeding raw material in catalytic cracking is reached; But according to two-phase fluid mechanics basic theories---on flow area, the concentration of steam and oil, the distribution of speed are uneven, according to energy balance, the steam that relative density is lower is tending towards coming together in center high-speed region, and the oil droplet that relative density is higher then mainly appears at limit wall low-speed region; Even and if velocity of steam is high again, also inevitably there is the lower frictional belt of speed near wall; The liquid that then density is relatively large will form accumulation along tube wall, the flow pattern flowed in the form of a ring; Although namely now vapour, gas-liquid two-phase liquid, generally in spray flow flow pattern, are still in thick or thin annular-flow flow pattern at limit wall regional area in nozzle interior runner, in it, the existence of large drop is inevitable; Form that the present invention adopts " drum oil ", make stock oil and atomizing steam when initial contact, steam " occupies " borderline region, reduces the gathering of large drop in Bian Bi region, strengthening atomizing effect; In mixing section 10, a part of stock oil is carried out first time by primary steam at a high speed and impacts, is broken for mist of oil, the formation first step is atomized, another part stock oil " is surrounded " by steam, and forming outside is steam, and center is that the flow pattern of steam and mist of oil mixture enters in interior pipe 5; In interior pipe 5, by primary steam, stock oil further to be impacted, broken, make stock oil obtain second stage atomization; Cavity in secondary steam spray orifice I 2-2 correspondence between pipe expansion section exit end and jet exit 19 is arranged, a part of secondary steam is made to flow to interior pipe expansion section exit end via interior pipe 5 mix with the stock oil in cavity between jet exit with above-mentioned, it is atomized further, i.e. third stage atomization; Secondary steam spray orifice II 2-1 corresponding nozzle exports 19 inwall upper-end part of drivings and arranges, a part of secondary steam is made to be injected into outlet inside wall upper end position by secondary steam spray orifice II 2-1, together riser reactor is entered into by jet exit 19 with the secondary steam of rest part, primary steam and stock oil, between riser reactor inwall and stock oil jet, form steam curtain screen by the steam of secondary steam spray orifice II 2-1, prevent stock oil coking on riser reactor wall.
Composition graphs 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, described secondary steam spray orifice I 2-2 is circumferential multiple; Described secondary steam spray orifice II 2-1 is be distributed in upper semicircumference multiple, and secondary steam spray orifice II 2-1 and secondary steam spray orifice I 2-2 is interspersed; Described multiple secondary steam spray orifice I 2-2 are three classes, as shown in Figure 5, included angle 2 between secondary steam spray orifice I 2-2 and interior tubular axis line is 6 ゜ ~ 15 ゜, as shown in Figure 6, included angle 1 between secondary steam spray orifice I 2-2 and interior tubular axis line is 15 ゜ ~ 40 ゜, and as shown in Figure 7, the included angle 3 between secondary steam spray orifice I 2-2 and interior tubular axis line is 45 ゜ ~ 80 ゜, as shown in Figure 8, the included angle 4 between secondary steam spray orifice II 2-1 and interior tubular axis line is 10 ゜ ~ 55 ゜
Composition graphs 1, the primary steam spout 11 being arranged on mixing-chamber inlet end is 0 ゜ ~ 30 ゜ with the angle β of interior pipe 5 axis, makes primary steam form ejector action to stock oil, is carried secretly by stock oil " successfully " in interior pipe; When fluctuation appears in pressure, angle β is greater than 30 ゜ if not, and stock oil or primary steam possibly cannot introduce nozzle.
Composition graphs 1, in order to prevent the stock oil after spraying from piling up at nozzle exit area, the outside of described jet exit has the acute angle edge of a knife 18 of arc.
In order to weaken the impact of riser reactor catalyst particles to spray-nozzle type sprinkler head bottom, the bottom of described shower nozzle is an inclined-plane 17, and the angle σ between this inclined-plane 17 and interior tubular axis line is 20 ゜ ~ 40 ゜.
Working process of the present invention is:
After the stock oil of heating enters nozzle by stock oil entrance 14, enter into the mixing section 10 of truncated cone-shaped via stock oil spout 12, stock oil spout 12 is parallel with nozzle axis; Meanwhile, primary steam is then introduced by primary steam entrance 15, and via being arranged on around stock oil spout, the primary steam spout 11 of β sprays into mixing section 10, β angle is at an angle 0 ゜ ~ 30 ゜ with interior tubular axis line, this embodiment is 20 ゜; Shown in composition graphs 2, the primary steam spout 11 being arranged on mixing-chamber inlet end is for multiple and be uniformly distributed along the circumference, and this embodiment is 8; The shape of the stock oil spout of mixing-chamber inlet end is for being circular or rectangle, and this embodiment is circular; The primary steam spout 11 and the stock oil spout 12 that are arranged on mixing-chamber inlet end can adopt override formats or direct form of holing, and this embodiment all adopts override formats;
At mixing section 10, primary steam forms ejector action to stock oil, is carried secretly by stock oil " successfully " in interior pipe 5; Meanwhile, primary steam at a high speed carries out first time impact, fragmentation to stock oil in mixing section 10, forms first step atomization; The primary steam spout 11 of mixing section 10 entrance end is arranged on stock oil spout 12 around, i.e. steam nozzle 11 " encirclement " stock oil spout 12, forms " drum oil " form;
In interior pipe 5, primary steam carries out further fragmentation, atomization to stock oil, forms second stage atomization; Interior pipe 5 is made up of contraction section 8, aditus laryngis section 7 and expansion section 6 three part; At contraction section 8, velocity of steam increases, and stock oil is continued fragmentation; After the transition of aditus laryngis section 7, at expansion section 8, the flowing of central zone stock oil and steam tends towards stability, and the oil film at wall place, limit is extended thinner; Oil droplet and primary steam together enter into the cavity between interior pipe expansion section exit end and jet exit; It is pointed out that, in interior pipe, twice atomization process gone through by stock oil, the acceleration of expansion section that is contraction section---aditus laryngis section---, atomization of extending; Second is that the stock oil of internal layer is by the shearing of outer steam, fragmentation; As mentioned above, according to two-phase fluid mechanics energy balance, the steam that relative density is lower is tending towards coming together in center high-speed region, and the oil droplet that relative density is higher then should collect to limit wall low-speed region; And in the present invention, the inlet end of interior pipe is the form of " drum oil ", therefore, when stock oil and primary steam flow in interior pipe, in order to reach equilibrium state, the stock oil of internal layer must with outer field steam " switch ", in the process, steam by producing strong shear cracking action, further enhances atomizing effect to stock oil; In order to make to keep optimum velocity from the stock oil of jet exit ejection, prevent the stock oil spraying into riser tube from producing backflow because speed is too high, the spread angle of the expansion section 6 of interior tube chamber 5 is 2 ゜ ~ 3 ゜, and the angle of throat of contraction section 8 is 2 ゜ ~ 3 ゜, and this embodiment is 3 ゜;
As Fig. 1, Fig. 3, and composition graphs 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, secondary steam is introduced by secondary steam entrance 9, via the annular steam room 4 between interior pipe 5 and outer tube 3, then is injected in the cavity between interior pipe expansion section 6 exit end and jet exit 19 by secondary steam spray orifice;
Functionally, secondary steam is divided into two portions, and a part of secondary steam flows to interior pipe expansion section 6 exit end via interior pipe 5 mix with the stock oil in cavity between jet exit 19 with above-mentioned, is atomized further it; On the other hand, part secondary steam is injected into the camber line place (the D place of Fig. 3) of jet exit inwall upper end, this part steam is sprayed by multiple secondary steam spray orifice II 2-1 being only arranged on upper semicircumference, together riser reactor is entered into by jet exit 19 with the secondary steam of rest part, primary steam and stock oil, between riser reactor inwall and stock oil jet, form steam curtain screen by the steam of secondary steam spray orifice II 2-1, prevent stock oil coking on riser reactor wall; Particularly, secondary steam spray orifice I 2-2 is multiple and circumferentially, secondary steam spray orifice I 2-2 has 3 classes;
As shown in Figure 6, be multiple secondary steam spray orifice I 2-2 of 6 ゜ ~ 15 ゜ with interior pipe axis angle Φ 2, this embodiment is 6 ゜, and effect makes secondary steam be injected in jet exit 19 medullary ray two ends, to destroy the oil film that stock oil is formed in this position.
As shown in Figure 5, be multiple secondary steam spray orifice I 2-2 of 15 ゜ ~ 40 ゜ with interior pipe axis angle Φ 1, this embodiment is 25 ゜, and effect makes secondary steam be injected on shower nozzle inwall, to destroy the oil film that stock oil is formed in this position.
As shown in Figure 7, with multiple secondary steam spray orifice I 2-2 that interior pipe axis angle Φ 3 is 45 ゜ ~ 80 ゜, this embodiment is 45 ゜, and effect makes secondary steam be injected between interior pipe expansion section exit end and jet exit, to the stock oil impact atomization again through mixing section atomization and the atomization of interior pipe.
As shown in Figure 8, and composition graphs 9, multiple secondary steam spray orifice II 2-1 being 10 ゜ ~ 55 ゜ with interior pipe axis angle Φ 4 are only arranged on upper semicircumference.In this embodiment, the number of this type of secondary steam spray orifice II 2-1 is five, wherein secondary steam spray orifice II 2-1 mono-of angle Φ 4 to be secondary steam spray orifice II 2-1 two, the angle Φ 4 of 15 ゜ be secondary steam spray orifice II 2-1 two of 25 ゜, 40 ゜ of angle Φ 4; The effect of secondary steam spray orifice II 2-1 makes secondary steam be injected in camber line place (the D place of Fig. 3) to jet exit inwall upper end, and then together spray into in riser reactor on stock oil top and stock oil, thus form more effectively suppression injection backflow, prevent the coking of stock oil on riser reactor wall.
As Fig. 1, Fig. 3, and composition graphs 4, shower nozzle 1 is spherical form, it is arranged on outer tube front end and connects as one with it, shower nozzle front portion has jet exit 19 and the acute angle edge of a knife 18, four limits of jet exit adopt circular angle, and the spread angle ɑ <60 ゜ of former jet exit, this embodiment is 20 ゜.In order to prevent the stock oil after spraying from piling up at nozzle exit area, the angle <90 ゜ of the acute angle edge of a knife 18 and nozzle axis, this embodiment is 40 ゜.
Arrange an inclined-plane 17 in the bottom of shower nozzle 1, the angle σ between this inclined-plane 17 and interior tubular axis line is 20 ゜ ~ 40 ゜, and this embodiment is 30 ゜.The inclined-plane of shower nozzle bottom can be made so concordant with riser reactor inwall, thus weaken the impact of riser reactor catalyst particles to shower nozzle bottom.
Claims (4)
1. a Feed Atomizing Nozzles For Heavy Oil Fcc Unit, described nozzle includes interior pipe (5), outer tube (3), shower nozzle (1), stock oil entrance (14) and primary steam entrance (15), annular cavity looping secondary steam room (4) between interior pipe (5) and outer tube (3) also arranges secondary steam entrance (9), described interior pipe (5) has contraction section (6), aditus laryngis section (7) and expansion section (8), and the front end of shower nozzle (1) has jet exit (19), described stock oil entrance (14) is communicated with on collecting tubule room (13), and is communicated with the mixing section (10) of truncated cone-shaped by stock oil spout (12), primary steam spout (11) is communicated with described primary steam entrance (15), it is characterized in that: described primary steam spout (11) for collar stock oil spout (12) arrange multiple, make stock oil and primary atomization steam when initial contact, steam " occupies " borderline region, reduces the gathering of large drop in Bian Bi region, strengthening atomizing effect, in mixing section (10), a part of stock oil is carried out first time by primary steam at a high speed and impacts, is broken for mist of oil, the formation first step is atomized, another part stock oil " is surrounded " by steam, and forming outside is steam, and center is that the flow pattern of steam and mist of oil mixture enters in interior pipe (5), in interior pipe (5), by primary steam, stock oil further to be impacted, broken, make stock oil obtain second stage atomization, cavity in secondary steam spray orifice I (2-2) is corresponding between pipe expansion section exit end and jet exit (19) is arranged, make a part of secondary steam and flow to interior pipe expansion section exit end via interior pipe (5) and mix with the stock oil in cavity between jet exit, it is atomized further, i.e. third stage atomization, secondary steam spray orifice II (2-1) is arranged between interior pipe expansion section exit end and jet exit, described secondary steam spray orifice II (2-1) corresponding nozzle outlet (19) inwall upper-end part of driving is arranged, a part of secondary steam is made to be injected into outlet inside wall upper end position by secondary steam spray orifice II (2-1), with the secondary steam of rest part, primary steam and stock oil together enter into riser reactor by jet exit (19), between riser reactor inwall and stock oil jet, steam curtain screen is formed by the steam of secondary steam spray orifice II (2-1), prevent stock oil coking on riser reactor wall, described secondary steam spray orifice I (2-2) is for circumferential multiple, described secondary steam spray orifice II (2-1) is for being distributed in the multiple of upper semicircumference, and secondary steam spray orifice II (2-1) and secondary steam spray orifice I (2-2) are interspersed.
2. Feed Atomizing Nozzles For Heavy Oil Fcc Unit according to claim 1, it is characterized in that: the axis of described primary steam spout (11) and the angle β of interior pipe (5) axis are 0 ゜ ~ 30 ゜, make primary steam form ejector action to stock oil, stock oil " successfully " is carried secretly in interior pipe.
3. Feed Atomizing Nozzles For Heavy Oil Fcc Unit according to claim 1, it is characterized in that: described secondary steam spray orifice I (2-2) is arranged between interior pipe expansion section exit end and jet exit, described secondary steam spray orifice I (2-2) has three classes, angle between the axis of the secondary steam spray orifice I (2-2) described in three classes and interior pipe (5) axis is respectively 6 ゜ ~ 15 ゜, 15 ゜ ~ 40 ゜, 45 ゜ ~ 80 ゜.
4. Feed Atomizing Nozzles For Heavy Oil Fcc Unit according to claim 1, is characterized in that: the angle between the axis of described secondary steam spray orifice II (2-1) and interior tubular axis line is 10 ゜ ~ 55 ゜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336937.7A CN102827628B (en) | 2012-09-13 | 2012-09-13 | Heavy oil catalytic cracking feeding atomizing nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210336937.7A CN102827628B (en) | 2012-09-13 | 2012-09-13 | Heavy oil catalytic cracking feeding atomizing nozzle |
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| CN102827628A CN102827628A (en) | 2012-12-19 |
| CN102827628B true CN102827628B (en) | 2014-12-24 |
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| CN201210336937.7A Active CN102827628B (en) | 2012-09-13 | 2012-09-13 | Heavy oil catalytic cracking feeding atomizing nozzle |
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| CN113231212A (en) * | 2021-05-14 | 2021-08-10 | 内蒙古博大实地化学有限公司 | Atomizing spray head applied to urea product containing inhibitor and anticaking agent |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648209A (en) * | 2004-01-31 | 2005-08-03 | 洛阳森泰石化机械有限公司 | High efficiency atomizing material feeding nozzle for heavy oil catalytic cracking |
| CN2717959Y (en) * | 2004-01-31 | 2005-08-17 | 洛阳森泰石化机械有限公司 | Improved secondary steam orifice structure for heavy oil catalytic cracking feeding spray nozzle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2839269B1 (en) * | 2002-05-06 | 2004-07-09 | Inst Francais Du Petrole | IMPROVED DEVICE FOR INJECTING HYDROCARBONS INTO A FLUIDIZED ENCLOSURE |
| CN200967809Y (en) * | 2006-11-21 | 2007-10-31 | 中国石油化工集团公司 | Heavy oil feeding atomization nozzle |
| CN101307249A (en) * | 2007-05-16 | 2008-11-19 | 徐升 | High-efficiency atomising nozzle for catalytic cracking of dead oil |
| CN201686665U (en) * | 2010-04-14 | 2010-12-29 | 洛阳高新柯恒石化技术有限公司 | Atomizing nozzle used for feeding of heavy oil catalytic cracking unit |
| CN202290379U (en) * | 2011-10-11 | 2012-07-04 | 洛阳瑞昌石油化工设备有限公司 | Heavy oil catalytic cracking spray nozzle with tangential feeding |
| CN202786133U (en) * | 2012-09-13 | 2013-03-13 | 洛阳森德石化工程有限公司 | Heavy oil catalytic cracking feeding atomizing nozzle |
-
2012
- 2012-09-13 CN CN201210336937.7A patent/CN102827628B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1648209A (en) * | 2004-01-31 | 2005-08-03 | 洛阳森泰石化机械有限公司 | High efficiency atomizing material feeding nozzle for heavy oil catalytic cracking |
| CN2717959Y (en) * | 2004-01-31 | 2005-08-17 | 洛阳森泰石化机械有限公司 | Improved secondary steam orifice structure for heavy oil catalytic cracking feeding spray nozzle |
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