CN102827628A - Heavy oil catalytic cracking feeding atomizing nozzle - Google Patents
Heavy oil catalytic cracking feeding atomizing nozzle Download PDFInfo
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- CN102827628A CN102827628A CN2012103369377A CN201210336937A CN102827628A CN 102827628 A CN102827628 A CN 102827628A CN 2012103369377 A CN2012103369377 A CN 2012103369377A CN 201210336937 A CN201210336937 A CN 201210336937A CN 102827628 A CN102827628 A CN 102827628A
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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 the petroleum refining technology field, relate generally to a kind of RFCC atomizing feed nozzle.
Background technology
The raw oil atomizing feed nozzle is a visual plant of refining of petroleum field CCU; Its effect is: at first that raw oil is broken, atomizing is a large amount of fine drop; Again the raw material oil droplet is injected in the catalytic cracking riser reactor, with catalyst mix, the reaction in the riser reactor.
In the last few years; The raw oil atomizing feed nozzle that is used for CCU, the domestic LPC type (90209410.6) that mainly contains wikipedia type, adopt the two wikipedia types of supersonic atomization steam KH type (89207961.9,200420066089.3), have the BWJ type (98233035.9) of cyclone structure, the CCK type broad varietys such as (99219391.5) that has the UPC-ɑ type (00109776.8) of porous steam distributor and have the secondary-atomizing structure; External similar technology then mainly contain S&W company the exploitation of target spray nozzle, Uop Inc. in establish that many orifice types Optimix nozzle, Mobile company and the Kellogg company of porous steam distributor develop jointly in establish the ATOMAX nozzle of porous steam distributor and baffle plate, the feed nozzle that has nozzle cover that can form flat jet of ABB Lummus company exploitation and the nozzle that is provided with secondary-atomizing steam of Exxon company exploitation.
Yet in actual use, said nozzle more or less exists following problem: the one, and the atomizing effect of raw oil remains further to be improved; The 2nd, the raw oil that is injected in the riser reactor by nozzle coking phenomenon occurs at the riser tube inwall; The 3rd, too high by raw material oil droplet projection velocity nozzle ejection, that atomized, make catalyst breakage serious; The 4th, atomizing steam and raw oil influence each other at the inlet zone of introducing nozzle, even occur when atomizing steam (or raw oil) pressure surge, and raw oil (or atomizing steam) can't be introduced the situation of nozzle.
The inventor has found the mechanism of riser reactor inwall coking through research.Its reason is: the raw oil that has atomized is injected to after the riser tube, at catalyzer, promote under the acting in conjunction of vapour in advance, will between riser tube inwall and raw oil jet, form a negative pressuren zone; Negative pressure produces injection backflow effect to raw oil itself and catalyzer, makes the two overstand, thereby forms coking at the riser tube inwall; And the coke button on the riser tube inwall is in case form; Will be long-pending more big more, and then block the riser tube runner, even need stopping production to carry out coke cleaning.
200410010045.3 patented claims that the inventor proposes as one of contriver propose to be provided with three kinds of dissimilar secondary steam spray orifices to strengthen the atomizing effect to raw oil; And steam fumarole is set on shower nozzle; Thereby between riser reactor inwall and raw oil jet, form the steam curtain screen; To the injection backflow effect of self, reduce the coking of riser tube inwall after being injected in the riser tube with inhibition raw oil, and promote the mixing of catalyzer and raw oil.
Through discovering, 200410010045.3 weak point is mainly aspect two: the one, and still there is the gathering of oil film in the inwall place of nozzle interior regional area, and promptly 200410010045.3 atomizing effect still can further improve.Then be the setting of 200410010045.3 nozzle position steam fumaroles in addition; Make it to the variation of operating parameters comparatively " sensitivity "; Because 200410010045.3 steam fumaroles are communicated with the secondary steam chamber, when fluctuation appears in vapor pressure, flow, even the raw oil flow is when fluctuation occurring; All possibly cause the catalyzer suck-back, even cause the wearing and tearing of steam fumarole.In addition, the purpose that 200410010045.3 shower nozzle places are provided with steam fumarole is after suppressing raw oil is injected in the riser tube that to the injection backflow effect of self, its steam fumarole is positioned at 5～30mm place, material oil outlet top usually.And research shows, the prime area that produces this injection backflow is positioned at the edge of material oil outlet jet itself " upper part ", i.e. part between nozzle centerline and extended line thereof and the riser tube inwall.Therefore with steam fumarole be located at the material oil outlet top not " radical cure " this injection reflux, and should " upper part " that steam fumarole is positioned as close to material oil outlet just possibly be realized suppressing to greatest extent the backflow of this strand injection.
Summary of the invention
The objective of the invention is to propose a kind of RFCC atomizing feed nozzle; Make the clustering phenomena of the oil film of its inwall place that can overcome nozzle interior local location existence; And then elimination major diameter drop; Obtain the desired atomizing particle size of catalytic cracking process, and can overcome the coking phenomenon of raw oil riser reactor inwall above nozzle.
The present invention takes following technical scheme to realize its invention task:
A kind of RFCC atomizing feed nozzle, described nozzle include interior pipe, outer tube, shower nozzle, raw oil inlet and primary steam inlet; Annular cavity looping secondary steam chamber between interior pipe and the outer tube also is provided with the secondary steam inlet; Pipe has contraction section, aditus laryngis section and expansion section in described, and the front end of shower nozzle has jet exit; Described raw oil inlet is communicated with on the collecting tubule chamber, and is communicated with the mixing section of truncated cone-shaped through the raw oil spout; Be communicated with the primary steam spout with described primary steam inlet; Described primary steam spout encloses a plurality of that the raw oil spout is provided with for ring; Make raw oil and primary atomization steam when initially contacting; Steam " occupies " borderline region, reduces the gathering in big drop wall zone on the limit, strengthens atomizing effect; A part of raw oil is carried out impacting the first time, being broken for mist of oil by the high speed primary steam in mixing section; The atomizing of the formation first step; Another part raw oil " is surrounded " by steam, and forming the outside is steam, and the center is in managing in the flow pattern of steam and mist of oil mixture gets into; In interior pipe, by primary steam to raw oil further impact, fragmentation, make raw oil obtain second stage atomizing; Cavity setting in the secondary steam spray orifice I correspondence between pipe expansion section exit end and the jet exit; Make a part of secondary steam with above-mentioned flow to via interior pipe between pipe expansion section exit end and the jet exit raw oil in the cavity mix; To its further atomizing, i.e. third stage atomizing; Position, secondary steam spray orifice II corresponding nozzle outlet inwall upper end is provided with; Make a part of secondary steam be injected into outlet inwall upper end position through secondary steam spray orifice II; Together enter into riser reactor with secondary steam, primary steam and the raw oil of rest part by jet exit; Steam through secondary steam spray orifice II forms the steam curtain screen between riser reactor inwall and raw oil jet, prevent raw oil coking on the riser reactor wall.
Described secondary steam spray orifice I is a plurality of along circle distribution; Described secondary steam spray orifice II is be distributed in upper semicircumference a plurality of, and secondary steam spray orifice II and secondary steam spray orifice I are interspersed.
The angle β of the axis of said primary steam spout and interior tube's axis is 0 ゜～30 ゜, makes primary steam form ejector action to raw oil, and raw oil " successfully " is carried secretly to interior pipe.
Secondary steam spray orifice I in being arranged between pipe expansion section exit end and the jet exit has three types, and the axis and the angle between the interior tube's axis of three types of said secondary steam spray orifice I are respectively 6 ゜～15 ゜, 15 ゜～40 ゜, 45 ゜～80 ゜.
The axis of said secondary steam spray orifice II and the angle between the interior tube's axis are 10 ゜～55 ゜.
Being shaped as of said raw oil spout is circle or rectangle.
Be arranged on the primary steam spout of mixing-chamber inlet end and the form that the raw oil spout can adopt override formats or directly hole.
With the secondary steam spray orifice I that interior tube's axis angle Φ 2 is 6 ゜～15 ゜, effect is to make secondary steam be injected in material oil outlet medullary ray two ends, to destroy the oil film that raw oil forms in this position.
With the secondary steam spray orifice I that interior tube's axis angle Φ 1 is 15 ゜～40 ゜, effect is that secondary steam is injected on the shower nozzle inwall, to destroy the oil film that raw oil forms in this position.
With the secondary steam spray orifice I that interior tube's axis angle Φ 3 is 45 ゜～80 ゜, effect is that secondary steam is injected between interior pipe expansion section exit end and the jet exit, and the raw oil through mixing section atomizing and the atomizing of interior pipe is impacted atomizing once more.
Pile up at nozzle exit area for the raw oil after preventing to spray, the outside of said jet exit has the arcual acute angle edge of a knife.
To keep optimum velocity in order making from the raw oil of jet exit ejection, to prevent that the raw oil that sprays into riser tube from producing backflow because of 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 nozzle shower nozzle bottom, the bottom of said shower nozzle is an inclined-plane, and the angle σ between this inclined-plane and the interior tube's axis is 20 ゜～40 ゜.
The present invention proposes a kind of RFCC atomizing feed nozzle, adopts above technical scheme, produces following beneficial effect to be:
1, strengthened atomizing effect: adopted the mixing section of " drum oil " form, can raw oil " successfully " have been carried secretly to interior pipe on the one hand, in mixing section, raw oil has been carried out the impact first time, fragmentation simultaneously, formed first step atomizing.The mixing section of " drum oil " form has also been strengthened in the interior pipe steam to the crushing effect of raw oil; Formed second stage atomizing; Optimized the angle in secondary steam hole; Effectively destroyed the oil film of shower nozzle inwall and piled up, eliminated the major diameter drop, thereby reach the desired atomizing particle size of catalytic cracking process.
2, secondary steam spray orifice II on a plurality of distribution upper semicircumferences is set; Use so that secondary steam is injected in to the camber line place of jet exit inwall upper end; And then together spray into to riser reactor on raw oil top and raw oil; Thereby more effectively form the steam curtain screen, suppress the raw oil injection and reflux, prevent the coking of raw oil on the riser reactor wall.
Description of drawings
Fig. 1 is a 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.
Among the 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 chamber; 5, interior pipe, 6, expansion section, 7, the aditus laryngis section, 8, contraction section, 9, the secondary steam inlet; 10, mixing section, 11, the primary steam spout, 12, the raw oil spout, 13, the collecting tubule chamber, 14, the raw oil inlet; 15, primary steam inlet, 17, the inclined-plane, 18, the acute angle edge of a knife, 19, jet exit.
Embodiment
In conjunction with accompanying drawing and specific embodiment the present invention is explained;
As shown in Figure 1, and with reference to Fig. 2, Fig. 3, Fig. 4, pipe 5, outer tube 3, shower nozzle 1, raw oil inlet 14 and primary steam inlet 15 in a kind of RFCC atomizing feed nozzle, described nozzle include; Annular cavity looping secondary steam chamber 4 between interior pipe 5 and the outer tube 3 also is provided with secondary steam inlet 9; Pipe 5 has contraction section 6, aditus laryngis section 7 and expansion section 8 in described, and the front end of shower nozzle 1 has jet exit 19; Described raw oil inlet 14 is communicated with on collecting tubule chamber 13, and is communicated with the mixing section 10 of truncated cone-shaped through raw oil spout 12; Be communicated with primary steam spout 11 with described primary steam inlet 15, described primary steam spout 11 encloses a plurality of that raw oil spout 12 is provided with for ring, and promptly steam nozzle " encirclement " raw oil spout forms one of the present invention " drum oil " form; Why adopting " drum oil " form is to confirm according to vapour, the moving characteristics of liquid two-phase---liquid carries current downflow in high velocity vapor; If liquid flow rate is constant; Increase velocity of steam gradually, will produce bubble flow, slug flow, laminar flow, wavy flow, slug flow, annular-flow and seven kinds of flow patterns of spray flow successively; Obviously, reach the elementary object that spray flow is an atomizing nozzle for feeding raw material in catalytic cracking; Yet according to two-phase fluid mechanics basic theories---on flow area; Steam is uneven with the concentration of oil, the distribution of speed; According to energy balance; The steam that specific density is lower is tending towards coming together in the center high-speed region, and the higher oil droplet of specific density then mainly appears at limit wall low-speed region; Even and velocity of steam is high again, near wall, also there is the lower frictional belt of speed inevitably; Then the relatively large liquid of density will form accumulation along tube wall, in the form of a ring the flow pattern of stream; Though promptly vapour, gas-liquid two-phase liquid are the spray flow flow pattern generally in nozzle interior runner this moment, the wall regional area is still the annular-flow flow pattern that is thick or thin on the limit, and existence of big drop is inevitable in it; The present invention adopts " drum oil " form, makes raw oil and atomizing steam when initially contact, and steam " occupies " borderline region, reduces the regional gathering of wall on the limit of big drop, the reinforcement atomizing effect; A part of raw oil is carried out impacting the first time, being broken for mist of oil by the high speed primary steam in mixing section 10; The atomizing of the formation first step; Another part raw oil " is surrounded " by steam, and forming the outside is steam, and the center is to manage in 5 in the flow pattern of steam and mist of oil mixture gets into; In interior pipe 5, by primary steam to raw oil further impact, fragmentation, make raw oil obtain second stage atomizing; Cavity setting in the secondary steam spray orifice I 2-2 correspondence between pipe expansion section exit end and the jet exit 19; Make a part of secondary steam with above-mentioned flow to via interior pipe 5 between pipe expansion section exit end and the jet exit raw oil in the cavity mix; To its further atomizing, i.e. third stage atomizing; Secondary steam spray orifice II 2-1 corresponding nozzle exports position, 19 inwalls upper end and is provided with; Make a part of secondary steam be injected into outlet inwall upper end position through secondary steam spray orifice II 2-1; Together enter into riser reactor with secondary steam, primary steam and the raw oil of rest part by jet exit 19; Steam through secondary steam spray orifice II 2-1 forms the steam curtain screen between riser reactor inwall and raw oil jet, prevent raw oil coking on the riser reactor wall.
In conjunction with Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, described secondary steam spray orifice I 2-2 is a plurality of along circle distribution; Described secondary steam spray orifice II 2-1 is be distributed in upper semicircumference a plurality of, and secondary steam spray orifice II 2-1 and secondary steam spray orifice I 2-2 are interspersed; Described a plurality of secondary steam spray orifice I 2-2 is three types, and as shown in Figure 5, the included angle 2 between secondary steam spray orifice I 2-2 and the interior tube's axis is 6 ゜～15 ゜; As shown in Figure 6; Included angle 1 between secondary steam spray orifice I 2-2 and the interior tube's axis is 15 ゜～40 ゜, and is as shown in Figure 7, and the included angle 3 between secondary steam spray orifice I 2-2 and the interior tube's axis is 45 ゜～80 ゜; As shown in Figure 8, the included angle 4 between secondary steam spray orifice II 2-1 and the interior tube's axis is 10 ゜～55 ゜
In conjunction with Fig. 1, being arranged on the primary steam spout 11 of mixing-chamber inlet end and the angle β of interior pipe 5 axis is 0 ゜～30 ゜, makes primary steam form ejector action to raw oil, and raw oil " successfully " is carried secretly to interior pipe; When fluctuation appearred in pressure, angle β was greater than 30 ゜ if not, and raw oil or primary steam possibly can't be introduced nozzle.
In conjunction with Fig. 1, to pile up at nozzle exit area for the raw oil after preventing to spray, the outside of said jet exit has the arcual acute angle edge of a knife 18.
In order to weaken the impact of riser reactor catalyst particles to nozzle shower nozzle bottom, the bottom of said shower nozzle is an inclined-plane 17, and the angle σ between this inclined-plane 17 and the interior tube's axis is 20 ゜～40 ゜.
Working process of the present invention is:
After the raw oil of heating gets into nozzles by raw oil inlet 14, enter into the mixing section 10 of truncated cone-shaped via raw oil spout 12, raw oil spout 12 is parallel with nozzle axis; Meanwhile, primary steam is then introduced by primary steam inlet 15, and via be arranged on around the raw oil spout, with interior tube's axis at an angle the primary steam spout 11 of β spray into mixing section 10, the β angle is 0 ゜～30 ゜, this embodiment is 20 ゜; In conjunction with shown in Figure 2, the primary steam spout 11 that is arranged on the mixing-chamber inlet end is a plurality of and is uniformly distributed along the circumference that this embodiment is 8; Being shaped as of the raw oil spout of mixing-chamber inlet end is circle or rectangle, and this embodiment is circular; Be arranged on the primary steam spout 11 of mixing-chamber inlet end and the form that raw oil spout 12 can adopt override formats or directly hole, this embodiment all adopts override formats;
At mixing section 10, primary steam forms ejector action to raw oil, and raw oil " successfully " is carried secretly to interior pipe 5; Simultaneously, the high speed primary steam carries out the impact first time, fragmentation to raw oil in mixing section 10, forms first step atomizing; The primary steam spout 11 of mixing section 10 entrance ends be arranged on raw oil spout 12 around, i.e. steam nozzle 11 " encirclement " raw oil spout 12 forms " drum oil " form;
In interior pipe 5, primary steam carries out further fragmentation, atomizing to raw oil, forms second stage atomizing; In pipe 5 form by contraction section 8, aditus laryngis section 7 and expansion section 6 three parts; At contraction section 8, velocity of steam increases, and raw oil is continued fragmentation; After the transition through aditus laryngis section 7, at expansion section 8, the mobile of central zone raw oil and steam tends towards stability, and the oil film at limit wall place is extended thinlyyer; Cavity in oil droplet and primary steam together enter between pipe expansion section exit end and the jet exit; It is pointed out that in interior pipe, raw oil is gone through atomization process twice, the one, the acceleration of contraction section---aditus laryngis section---expansion section, the atomizing of extending; Second is that the raw oil of internal layer is by the shearing of outer steam, fragmentation; As stated, according to two-phase fluid mechanics energy balance, the steam that specific density is lower is tending towards coming together in the center high-speed region, and the higher oil droplet of specific density then should compile 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 raw oil and primary steam flow in interior pipe; In order to reach equilibrium state, the raw oil of internal layer must with outer field steam " switch ", in this process; Steam will produce the effect of intensive shearing-crushing to raw oil, further strengthen atomizing effect; Keep optimum velocity in order to make from the raw oil of jet exit ejection; Prevent that the raw oil that sprays into riser tube from producing backflow because of 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 ゜;
Like Fig. 1, Fig. 3; And combine Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9; Secondary steam is introduced by secondary steam inlet 9, via the annular steam chamber 4 between interior pipe 5 and the outer tube 3, in the cavity in being injected to through the secondary steam spray orifice again between pipe expansion section 6 exit end and the jet exit 19;
From function, secondary steam is divided into two portions, a part of secondary steam with above-mentioned flow to via interior pipe 5 between pipe expansion section 6 exit end and the jet exit 19 raw oil in the cavity mix, to its further atomizing; 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 by a plurality of secondary steam spray orifice II 2-1 ejections that only are arranged on upper semicircumference; Together enter into riser reactor with secondary steam, primary steam and the raw oil of rest part by jet exit 19; Steam through secondary steam spray orifice II 2-1 forms the steam curtain screen between riser reactor inwall and raw oil jet, prevent raw oil coking on the riser reactor wall; Particularly, secondary steam spray orifice I 2-2 is a plurality of and along circle distribution, secondary steam spray orifice I 2-2 has 3 types;
As shown in Figure 6, with interior tube's axis angle Φ 2 be a plurality of secondary steam spray orifice I 2-2 of 6 ゜～15 ゜, this embodiment is 6 ゜, effect is to make secondary steam be injected in jet exit 19 medullary ray two ends, to destroy the oil film that raw oil forms in this position.
As shown in Figure 5, with interior tube's axis angle Φ 1 be a plurality of secondary steam spray orifice I 2-2 of 15 ゜～40 ゜, this embodiment is 25 ゜, effect is that secondary steam is injected on the shower nozzle inwall, to destroy the oil film that raw oil forms in this position.
As shown in Figure 7; With interior tube's axis angle Φ 3 be a plurality of secondary steam spray orifice I 2-2 of 45 ゜～80 ゜; This embodiment is 45 ゜, and effect is that secondary steam is injected between interior pipe expansion section exit end and the jet exit, and the raw oil through mixing section atomizing and the atomizing of interior pipe is impacted atomizing once more.
As shown in Figure 8, and combine Fig. 9, with interior tube's axis angle Φ 4 be that a plurality of secondary steam spray orifice II 2-1 of 10 ゜～55 ゜ only are arranged on upper semicircumference.Among this embodiment; The number of this type of secondary steam spray orifice II 2-1 is five, and wherein angle Φ 4 is one of the secondary steam spray orifice II 2-1 of 40 ゜ of two of the secondary steam spray orifice II 2-1 of 15 ゜, two of secondary steam spray orifice II 2-1 that angle Φ 4 is 25 ゜, angle Φ 4; The effect of secondary steam spray orifice II 2-1 is that secondary steam is injected in to the camber line place (the D place of Fig. 3) of jet exit inwall upper end; And then together spray into to riser reactor on raw oil top and raw oil; More effectively suppress the injection backflow thereby form, prevent the coking of raw oil on the riser reactor wall.
Like Fig. 1, Fig. 3, and combine Fig. 4, shower nozzle 1 is a spherical form; It is arranged on the outer tube front end and connects as one with it, and the shower nozzle front portion has the jet exit 19 and the acute angle edge of a knife 18, and circular angle is adopted on four limits of jet exit; < 60 ゜, this embodiment are 20 ゜ to the spread angle ɑ of former jet exit.For the raw oil after preventing to spray is piled up at nozzle exit area, < 90 ゜, this embodiment are 40 ゜ to the angle of the acute angle edge of a knife 18 and nozzle axis.
An inclined-plane 17 is set in the bottom of shower nozzle 1, and the angle σ between this inclined-plane 17 and the interior tube's axis is 20 ゜～40 ゜, and this embodiment is 30 ゜.Can make the inclined-plane of shower nozzle bottom concordant like this, thereby weaken of the impact of riser reactor catalyst particles the shower nozzle bottom with the riser reactor inwall.
Claims (5)
1. RFCC atomizing feed nozzle, described nozzle include interior pipe (5), outer tube (3), shower nozzle (1), raw oil inlet (14) and primary steam enter the mouth (15); Annular cavity looping secondary steam chamber (4) between interior pipe (5) and the outer tube (3) also is provided with secondary steam inlet (9); Pipe (5) has contraction section (6), aditus laryngis section (7) and expansion section (8) in described, and the front end of shower nozzle (1) has jet exit (19); Described raw oil inlet (14) is communicated with on collecting tubule chamber (13), and is communicated with the mixing section (10) of truncated cone-shaped through raw oil spout (12); Be communicated with primary steam spout (11) with described primary steam inlet (15); Described primary steam spout (11) encloses a plurality of that raw oil spout (12) is provided with for ring; Make raw oil and primary atomization steam when initially contacting; Steam " occupies " borderline region, reduces the gathering in big drop wall zone on the limit, strengthens atomizing effect; A part of raw oil is carried out impacting the first time, being broken for mist of oil by the high speed primary steam in mixing section (10); The atomizing of the formation first step; Another part raw oil " is surrounded " by steam, and forming the outside is steam, and the center is to manage in (5) in the flow pattern of steam and mist of oil mixture gets into; In interior pipe (5), by primary steam to raw oil further impact, fragmentation, make raw oil obtain second stage atomizing; Cavity setting in secondary steam spray orifice I (2-2) is corresponding between pipe expansion section exit end and the jet exit (19); Make a part of secondary steam with above-mentioned flow to via interior pipe (5) between pipe expansion section exit end and the jet exit raw oil in the cavity mix; To its further atomizing, i.e. third stage atomizing; Position, secondary steam spray orifice II (2-1) corresponding nozzle outlet (19) inwall upper end is provided with; Make a part of secondary steam be injected into outlet inwall upper end position through secondary steam spray orifice II (2-1); Together enter into riser reactor with secondary steam, primary steam and the raw oil of rest part by jet exit (19); Steam through secondary steam spray orifice II (2-1) forms the steam curtain screen between riser reactor inwall and raw oil jet, prevent raw oil coking on the riser reactor wall.
2. RFCC atomizing feed nozzle according to claim 1 is characterized in that: described secondary steam spray orifice I (2-2) a plurality of for along circle distribution; Described secondary steam spray orifice II (2-1) is for to be distributed in a plurality of of upper semicircumference, and secondary steam spray orifice II (2-1) is interspersed with secondary steam spray orifice I (2-2).
3. RFCC atomizing feed nozzle according to claim 1; It is characterized in that: the angle β of the axis of said primary steam spout (11) and interior pipe (5) axis is 0 ゜～30 ゜; Make primary steam form ejector action, raw oil " successfully " is carried secretly to interior pipe raw oil.
4. RFCC atomizing feed nozzle according to claim 1; It is characterized in that: manage in said secondary steam spray orifice I (2-2) is arranged between expansion section exit end and the jet exit; Said secondary steam spray orifice I (2-2) has three types; Angle between the axis of three types of described secondary steam spray orifice I (2-2) and interior pipe (5) axis is respectively 6 ゜～15 ゜, 15 ゜～40 ゜, 45 ゜～80 ゜.
5. RFCC atomizing feed nozzle according to claim 1; It is characterized in that: between pipe expansion section exit end and the jet exit, the axis of said secondary steam spray orifice II (2-1) and the angle between the interior tube's axis were 10 ゜～55 ゜ in said secondary steam spray orifice II (2-1) was arranged on.
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| CN201210336937.7A CN102827628B (en) | 2012-09-13 | 2012-09-13 | Heavy oil catalytic cracking feeding atomizing nozzle |
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| CN201210336937.7A CN102827628B (en) | 2012-09-13 | 2012-09-13 | Heavy oil catalytic cracking feeding atomizing nozzle |
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| CN102827628B CN102827628B (en) | 2014-12-24 |
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| CN105778978A (en) * | 2016-04-15 | 2016-07-20 | 洛阳森德石化工程有限公司 | Use method of multi-stage raw oil atomizing spray nozzle structure for heavy oil catalytic cracking |
| CN105921295A (en) * | 2016-06-27 | 2016-09-07 | 石宝珍 | Feed atomization nozzle |
| CN105950208A (en) * | 2016-06-27 | 2016-09-21 | 石宝珍 | Multistage-atomization feed nozzle |
| CN106010630A (en) * | 2016-06-27 | 2016-10-12 | 石宝珍 | Feed atomizing nozzle for catalytic cracking |
| CN108816548A (en) * | 2018-06-29 | 2018-11-16 | 北京瑞诺安科新能源技术有限公司 | A kind of slurry spray gun |
| CN111748368A (en) * | 2020-07-23 | 2020-10-09 | 洛阳乐邦石化设备有限公司 | Catalytic cracking reactor capable of being flexibly adjusted |
| CN113058507A (en) * | 2021-04-02 | 2021-07-02 | 唐山开滦化工科技有限公司 | Device and method for adding polyformaldehyde terminator |
| 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062689A1 (en) * | 2002-05-05 | 2004-04-01 | Thierry Gauthier | Device for injection of hydrocarbons into a fluidized chamber |
| 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 |
| 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 (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040062689A1 (en) * | 2002-05-05 | 2004-04-01 | Thierry Gauthier | Device for injection of hydrocarbons into a fluidized chamber |
| 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 |
| 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 |
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| CN103897721B (en) * | 2014-03-10 | 2016-06-22 | 沈庆成 | A kind of efficient catalytic cracking unit riser feed nozzle and atomization method |
| CN103897721A (en) * | 2014-03-10 | 2014-07-02 | 沈庆成 | Feeding spray nozzle of raising pipe of high-efficiency catalytic cracking device and atomizing method |
| CN105195348A (en) * | 2015-09-11 | 2015-12-30 | 洛阳森德石化工程有限公司 | Abrasion retarding process of regeneration flue gas double-Venturi-structure spray nozzle |
| CN105195348B (en) * | 2015-09-11 | 2018-07-27 | 洛阳森德石化工程有限公司 | A kind of abrasion of regenerated flue gas double-venturi structure nozzle slows down technique |
| CN105778978B (en) * | 2016-04-15 | 2017-11-17 | 洛阳森德石化工程有限公司 | A kind of application method of the feedstock oil multistage atomizing nozzle arrangements of RFCC |
| CN105778978A (en) * | 2016-04-15 | 2016-07-20 | 洛阳森德石化工程有限公司 | Use method of multi-stage raw oil atomizing spray nozzle structure for heavy oil catalytic cracking |
| CN105921295A (en) * | 2016-06-27 | 2016-09-07 | 石宝珍 | Feed atomization nozzle |
| CN105950208B (en) * | 2016-06-27 | 2017-11-10 | 石宝珍 | A kind of multistage atomizing feed nozzle |
| CN106010630A (en) * | 2016-06-27 | 2016-10-12 | 石宝珍 | Feed atomizing nozzle for catalytic cracking |
| CN105950208A (en) * | 2016-06-27 | 2016-09-21 | 石宝珍 | Multistage-atomization feed nozzle |
| CN106010630B (en) * | 2016-06-27 | 2019-01-01 | 石宝珍 | A kind of atomizing nozzle for feeding raw material in catalytic cracking |
| CN105921295B (en) * | 2016-06-27 | 2019-03-26 | 石宝珍 | A kind of atomizing feed nozzle |
| CN108816548A (en) * | 2018-06-29 | 2018-11-16 | 北京瑞诺安科新能源技术有限公司 | A kind of slurry spray gun |
| CN111748368A (en) * | 2020-07-23 | 2020-10-09 | 洛阳乐邦石化设备有限公司 | Catalytic cracking reactor capable of being flexibly adjusted |
| CN113058507A (en) * | 2021-04-02 | 2021-07-02 | 唐山开滦化工科技有限公司 | Device and method for adding polyformaldehyde terminator |
| 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 |
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