CN106010630A - Feed atomizing nozzle for catalytic cracking - Google Patents
Feed atomizing nozzle for catalytic cracking Download PDFInfo
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- CN106010630A CN106010630A CN201610476268.1A CN201610476268A CN106010630A CN 106010630 A CN106010630 A CN 106010630A CN 201610476268 A CN201610476268 A CN 201610476268A CN 106010630 A CN106010630 A CN 106010630A
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- steam
- catalytic cracking
- expansion
- nozzle
- jet expansion
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/085—Feeding reactive fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
- B05B7/0416—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid
- B05B7/0441—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing one gas and one liquid with one inner conduit of liquid surrounded by an external conduit of gas upstream the mixing chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
- B05B7/02—Spray pistols; Apparatus for discharge
- B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
- B05B7/0892—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/14—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils with preheated moving solid catalysts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G11/00—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G11/20—Catalytic cracking, in the absence of hydrogen, of hydrocarbon oils by direct contact with inert heated gases or vapours
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention discloses a novel atomizing feed nozzle for catalytic cracking. The nozzle comprises a spray head, a venturi, an outer tube, an inner tube, a raw material oil inlet, a steam inlet and a steam hole plate. Steam atomizes raw material oil in a mixed atomization chamber for the first time, steam carrying raw material oil enters the venturi and passes through a contraction section, the circulation area is contracted, then steam carrying raw material oil passes through a throat section and is sprayed out of an expansion section, and therefore steam atomizes raw material oil for the second time; steam carrying out raw material oil enters a nozzle outlet of the spray head for atomization for the third time. The nozzle outlet of the spray head has multiple arrangement forms, a wide screen is formed when steam carrying raw material oil is sprayed out, sufficient contact and reaction of raw material oil and a catalyst are promoted, and meanwhile catalyst cracking is effectively lowered.
Description
Technical field
The invention belongs to petroleum refining field catalytic cracking unit, relate generally to the catalytic cracking Novel feed nozzle of a kind of multistage atomizing.
Background technology
Raw material oil feeding atomizing nozzle is a visual plant of petroleum refining field catalytic cracking unit, its effect is: first that raw oil is broken, atomization is substantial amounts of fine drop, again raw material oil droplet is injected in catalytic cracking riser reactor, mixes with the catalyst in riser reactor, react.The form of the raw material oil feeding atomizing nozzle being currently used for catalytic cracking unit has a lot, such as, there are a cast, trunnion type, Y type, spiral blade profile, cone target type and all kinds of target type nozzle, domestic nozzle has single-tube nozzle, i.e. using single tube chamber to feed air inlet mixed aerosol, using effect is less desirable.
Nozzle makes reaction raw materials become droplet, it is therefore an objective to energy Quick-gasifying also reacts, and atomization is not final purpose, improves reaction effect and is only target.For the reaction result reached, i.e. need to make the liquid atomization, need again to make atomization logistics distribute in reactor, be especially critically important with catalyst uniform contact.
Further, since the liquid mist such as raw oil to be made turn to fine particle, need higher pressure drop and gas flow rate.The gas-liquid atomization logistics of prior art high speed is injected directly into reactor, washes away catalyst broken more serious.
But in actual use, said nozzle more or less also exists problems with: one is that the atomizing effect of raw oil needs to be improved further；Two is that the raw oil being injected in riser reactor by nozzle is not wide with catalyst contact surface, and reaction effect is the best；The raw material oil droplet jet velocity that three has been the atomization that has nozzle to spray is too high, makes catalyst breakage serious.
The present invention proposes a kind of catalytic cracking Novel atomized feed nozzle, makes raw oil obtain multistage atomizing, effectively eliminates major diameter drop, thus reach the atomizing particle size required by catalytic cracking process.Research to shower nozzle simultaneously finds, shower nozzle sprays into the raw oil of riser reactor and contacts with catalyst, reacts insufficient, it is owing to the arrangement form of conventional jet expansion is unfavorable for the diffusion of raw oil, the present invention proposes four kinds of nozzle structure forms, the jet expansion centrage of shower nozzle both sides and nozzle-axis angle are 0-30 °, nozzle surface is deflected to both sides by middle part, it is 0-30 ° with radial direction angle, this setting makes raw material oil droplet spread to both sides after being sprayed into riser reactor by nozzle, form broad curtain screen, bigger with the contact surface of catalyst.It addition, jet expansion is provided with expansion segment, through circulation area expansion segment during the ejection of raw material oil droplet, owing to atomization gas density is little, along with the increase of circulation area is slowed down rapidly, reduce the situation of catalyst breakage.
Summary of the invention
It is an object of the invention to provide a kind of catalytic cracking Novel atomized feed nozzle, the multistage atomizing to raw oil can be realized, effectively eliminate major diameter drop, when nozzle sprays, form broader curtain screen so that raw oil contacts more fully with catalyst, reacts simultaneously.
For solving the problems referred to above, the technical scheme is that
A kind of catalytic cracking Novel atomized feed nozzle, described nozzle includes shower nozzle, trunnion, outer tube, inner tube, raw oil entrance, steam inlet and steam orifice plate；Described steam orifice plate is arranged between trunnion and outer tube, steam orifice plate centre bore is connected with inner tube, between steam orifice plate, outer tube and inner tube, form toroidal cavity constitute vaporium, and steam inlet is set on vaporium, between steam orifice plate, inner tube outlet and trunnion contraction section entrance, constitute mixed aerosol room；Described trunnion has shrinkage expansion range of atomization, i.e. has expansion segment, aditus laryngis section and contraction section；The described steam multiple steam fumarole of orifice plate circle distribution, the multiple jet expansion of shower nozzle circle distribution.
The trunnion of described catalytic cracking Novel atomized feed nozzle has multiple shrinkage expansion range of atomization, i.e. has many groups and forms the expansion segment of logistics acceleration-deceleration, aditus laryngis section and contraction section.
The steam orifice plate of above-mentioned catalytic cracking Novel atomized feed nozzle is determined around the steam fumarole of inner tube circle distribution N number of φ D, N, D by the treating capacity of raw oil.
Steam fumarole can set on inner pipe.
The shower nozzle circumference of described catalytic cracking Novel atomized feed nozzle arranges multiple jet expansion, the structure of jet expansion is set to wikipedia type, i.e. it is made up of contraction section, aditus laryngis section, expansion segment, this structure can make raw oil obtain third level atomization, form deceleration area at expansion segment simultaneously, effectively solve the too high problem making catalyst breakage serious of raw material oil droplet jet velocity；The layout of jet expansion may be configured as the various arrangement forms such as circular uniform, oval or layout that is that limit vertical direction width；The surface of spray outlet end is designed as the tangent plane that steering angle is α in the horizontal direction, and α is 0-30 °, and jet expansion centrage is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above makes steam carry after raw oil is sprayed by jet expansion to expand to horizontal both sides in sector, form broader steam curtain screen, so that raw oil is fully reacted with catalyst.
The shower nozzle circumference of described catalytic cracking Novel atomized feed nozzle arranges multiple jet expansion, and the jet expansion above spray outlet end face horizontal axis deflects down C1 angle at Way out；Outlet below spray outlet end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from spray outlet end face vertical centrage different distance.
The jet expansion inner surface of shower nozzle or jet expansion contraction section inner surface or jet expansion contraction section and aditus laryngis section inner surface could be arranged to leafy grass shape, preferentially being set to Herba Galii Bungei shape, this setting makes third level atomizing steam higher to impact, the breaking capacity of raw oil.
Heated and have the raw oil of certain pressure through raw oil entrance, inner tube enters in mixed aerosol room, steam enters vaporium through steam inlet, and enter mixed aerosol room after being accelerated by the steam fumarole that circle distribution on steam orifice plate is multiple, the raw oil flowing into mixed aerosol room above by inner tube is impacted, mixing, make raw oil obtain for the first time to be atomized, simultaneously because multiple steam fumaroles of circle distribution are around inner tube on steam orifice plate, form steamdrum and round raw oil and carry at a high speed raw oil flowing, reduce the gathering in Bian Bi region of the big drop, strengthening atomizing effect；Steam carries raw oil and enters in trunnion, owing to the contraction section of trunnion is tapered, further through aditus laryngis section and expansion segment after circulation area contraction, raw oil is further impacted by steam, crushes, make raw oil obtain second time to be atomized, organize expansion segment, aditus laryngis section and contraction section owing to trunnion can be arranged more, make steam carry raw oil repeatedly acceleration-deceleration, now impact grinding ability is higher, and atomizing effect is more preferable；Steam carries raw oil and enters the jet expansion on shower nozzle, and owing to jet expansion has contraction section, aditus laryngis section, circulation area is shunk and made steam accelerate further to be impacted raw oil, crush at contraction section, forms third time atomization.Through three grades of atomizations, major diameter drop can be effectively eliminated so that the raw oil entering riser reactor is fully contacted with catalyst, reacts, thus improves reaction yield.
Control owing to each jet expansion direction to have been carried out design, carry out the expansion of β angle in the horizontal direction, carry out C1 and C2 angular direction at vertical direction to flow to react outside spray outlet end at atomization logistics jet length L of requirement and converge, the oil and gas logistics making porous flow out forms flat distribution band in reactor, sufficiently can contact gasification, reaction with the catalyst in reactor.C1 and C2 value is determined by L.
The catalytic cracking Novel atomized feed nozzle of the present invention, compared with prior art, has a following beneficial effect:
1, three grades of atomizations to raw oil can effectively eliminate major diameter drop, thus reaches the atomizing particle size required by catalytic cracking process；
2, this jet expansion arrangement form makes steam form broader and flat vapor oil air curtain screen after carrying raw oil ejection, so that raw oil and catalyst are fully contacted, react, improves yield；
3, this jet expansion is provided with deceleration area, solves the too high problem making catalyst breakage serious of raw material oil droplet jet velocity；
4, tapered due to the contraction section 11 of trunnion 6, raw oil repeatedly acceleration-deceleration is carried further through steam in aditus laryngis section 10 circulation area contraction process, increase gas and the speed difference of liquid so that raw oil is further impacted, crushes by steam, makes raw oil atomized；Steam carries raw oil and enters the jet expansion 8A on shower nozzle 8, and owing to jet expansion 8A has contraction section 8D, aditus laryngis section 8C, circulation area is shunk and made steam accelerate further to be impacted raw oil, crush at contraction section 8D, is formed and is again atomized.
Accompanying drawing explanation
Fig. 1-Fig. 9 is catalytic cracking Novel atomized feed nozzle structure chart, specifically:
Fig. 1: catalytic cracking Novel atomized feed nozzle structural representation；
Fig. 2: trunnion 6 arranges the catalytic cracking Novel atomized feed nozzle structural representation of many group scaling sections；
The structural representation of Fig. 3: A-A sectional view；
The catalytic cracking Novel atomized feed nozzle structural representation that Fig. 4: steam fumarole 4A is arranged in inner tube 7；
The schematic diagram of four kinds of structures of Fig. 5-8: shower nozzle 8；
The structural representation of Fig. 9: C-C sectional view.
nullIn figure: 1、Raw oil entrance，2、Steam inlet，3、Vaporium，4、Steam orifice plate，5、Mixed aerosol room，6、Trunnion，7、Inner tube，8、Shower nozzle，9、Expansion segment，10、Aditus laryngis section，11、Contraction section，12、Outer tube，4A、Steam fumarole，8A、Jet expansion，8B、Jet expansion expansion segment，8C、Jet expansion aditus laryngis section，8D、Jet expansion contraction section，α、Spray outlet end surfaces horizontal direction angle of inclination，β、Jet expansion centrage horizontal direction angle，A1、Trunnion expansion segment angle，B1、Trunnion contraction section angle，A2、Jet expansion expansion angle，B2、Jet expansion converging angles，C1、Shower nozzle horizontal axis nozzle above outlet vertical direction inclination angle，C2、Jet expansion vertical direction inclination angle below shower nozzle horizontal axis，a、Jet expansion vertical direction distributing position，b、Jet expansion horizontal direction distributing position，L、The atomization logistics jet length that reaction requires，φ1、Jet expansion throat diameter，φ2、Leafy grass diameter，φ3、Trunnion aditus laryngis section diameter.
Detailed description of the invention
The present invention is further detailed explanation with detailed description of the invention below in conjunction with the accompanying drawings, it is intended to helps the feature of the reader understanding present invention and essence, but the drawings and specific embodiments content be not limiting as the present invention can practical range.
As it is shown in figure 1, a kind of catalytic cracking Novel atomized feed nozzle, described nozzle includes shower nozzle 8, trunnion 6, outer tube 12, inner tube 7, raw oil entrance 1, steam inlet 2 and steam orifice plate 4；Described steam orifice plate 4 is arranged between trunnion 6 and outer tube 12, steam orifice plate 4 centre bore is connected with inner tube 7, between steam orifice plate 4, outer tube 12 and inner tube 7, form toroidal cavity constitute vaporium 3, and steam inlet 2 is set on vaporium 3, export composition mixed aerosol room 5 between trunnion 6 contraction section 11 entrance in steam orifice plate 4, inner tube 7；Described trunnion 6 has shrinkage expansion range of atomization, i.e. has expansion segment 9, aditus laryngis section 10 and contraction section 11；Described steam orifice plate 4 multiple steam fumarole 4A of circle distribution, shower nozzle 8 circle distribution multiple jet expansion 8A.
As in figure 2 it is shown, the trunnion 6 of described catalytic cracking Novel atomized feed nozzle can have multiple shrinkage expansion range of atomization, i.e. have many group expansion segments 9, aditus laryngis section 10 and contraction section 11, this example is 2 groups.
As it is shown on figure 3, the steam orifice plate 4 of above-mentioned catalytic cracking Novel atomized feed nozzle is determined around steam fumarole 4A of inner tube 7 circle distribution N number of φ D, N, D by the treating capacity of raw oil.
As shown in Figure 4, steam fumarole 4A can be located in inner tube 7.
As shown in Fig. 5,6,7, shower nozzle 8 circumference arranges multiple jet expansion 8A, the structure of jet expansion 8A is set to wikipedia type, i.e. it is made up of contraction section 8D, aditus laryngis section 8C, expansion segment 8B, this structure can make raw oil obtain third level atomization, form deceleration area at expansion segment 8B simultaneously, effectively solve the too high problem making catalyst breakage serious of raw material oil droplet jet velocity；The layout of jet expansion 8A may be configured as the various arrangement forms such as circular uniform, oval or layout that is that limit vertical direction width；The surface of shower nozzle 8 port of export is designed as the tangent plane that steering angle is α in the horizontal direction, and α is 0-30 °, and jet expansion 8A centrage is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above make steam carry raw oil by jet expansion 8A spray after in sector to both sides expand, form broader steam curtain screen, so that raw oil is fully reacted with catalyst.
As it is shown in figure 9, the jet expansion 8A above shower nozzle 8 exit end face horizontal axis deflects down C1 angle at Way out；Jet expansion 8A below shower nozzle 8 exit end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from shower nozzle 8 exit end face vertical centrage different distance.
As shown in Figure 8, the jet expansion 8A inner surface of shower nozzle 8 or jet expansion 8A contraction section 8D inner surface or jet expansion 8A contraction section 8D and aditus laryngis section 8C inner surface are set to leafy grass shape, preferentially being set to Herba Galii Bungei shape, this setting makes third level atomizing steam higher to impact, the breaking capacity of raw oil.
Heated and have the raw oil of certain pressure through raw oil entrance 1, inner tube 7 enters in mixed aerosol room 5, steam enters vaporium 3 through steam inlet 2, and enter mixed aerosol room 5 after being accelerated by steam fumarole 4A that circle distribution on steam orifice plate 4 is multiple, the raw oil flowing into mixed aerosol room 5 above by inner tube 7 is impacted, mixing, make raw oil obtain for the first time to be atomized, simultaneously because multiple steam fumaroles 4A of circle distribution are around inner tube 7 on steam orifice plate 4, form steamdrum and round raw oil and carry at a high speed raw oil flowing, reduce the gathering in Bian Bi region of the big drop, strengthening atomizing effect；Steam carries raw oil and enters in trunnion 6, owing to the contraction section 11 of trunnion 6 is tapered, further through aditus laryngis section 10 and expansion segment 9 after circulation area contraction, raw oil is further impacted by steam, crushes, make raw oil obtain second time to be atomized, owing to trunnion 6 can arrange many group expansion segments 9, aditus laryngis section 10 and contraction section 11, make steam carry raw oil repeatedly acceleration-deceleration, now impact grinding ability is higher, and atomizing effect is more preferable；Steam carries raw oil and enters the jet expansion 8A on shower nozzle 8, and owing to jet expansion 8A has contraction section 8D, aditus laryngis section 8C, circulation area is shunk and made steam accelerate further to be impacted raw oil, crush at contraction section 8D, forms third time atomization.Through three grades of atomizations, major diameter drop can be effectively eliminated so that the raw oil entering riser reactor is fully contacted with catalyst, reacts, thus improves reaction yield.
Control owing to each jet expansion 8A direction to have been carried out design, carry out the expansion of β angle in the horizontal direction, carry out C1 and C2 angular direction at vertical direction to flow to react outside shower nozzle 8 port of export at atomization logistics jet length L of requirement and converge, the oil and gas logistics making porous flow out forms flat distribution band in reactor, sufficiently can contact gasification, reaction with the catalyst in reactor.C1 and C2 value is determined by L.
Embodiment
One nozzle raw oil inlet amount 25t/h, feeding temperature 250 DEG C, feed pressure 0.7MPa(G), reactor pressure 0.2MPa(G)；Atomizing steam 1.0t/h, vapor (steam) temperature 250 DEG C, steam pressure 0.8MPa(G).
Present configuration as shown in Figure 1, nozzle design example is as follows:
Oil-in 1 specification DN80, steam port 2 specification DN50, trunnion 6 external diameter 132mm, inner tube 7 external diameter 89mm, trunnion 6 arranges a shrinkage expansion section, φ 3=35mm, B1=20 °, A1=10 °, 4A number N=10, φ D=8mm, 8A quantity=12, φ 1=8mm, B2=15 °, A2=6 ° of α=β=15 °, C1=C2=5 °, L=400mm, steam port 2 quantity of steam 900kg/h, 12 8A location arrangements as shown in Figure 6, wherein a=65, b=110.
Claims (9)
1. a catalytic cracking Novel atomized feed nozzle, it is characterised in that it includes shower nozzle (8), trunnion (6), outer tube (12), inner tube (7), raw oil entrance (1), steam inlet (2) and steam orifice plate (4)；Described steam orifice plate (4) is arranged between trunnion (6) and outer tube (12), steam orifice plate (4) is connected with inner tube (7), between steam orifice plate (4), outer tube (12) and inner tube (7), form toroidal cavity constitute vaporium (3), and steam inlet (2) is set on vaporium (3), at steam orifice plate (4), between inner tube (7) outlet and trunnion (6) contraction section (11) entrance, constitute mixed aerosol room (5)；Described trunnion (6) has shrinkage expansion range of atomization, i.e. has expansion segment (9), aditus laryngis section (10) and contraction section (11)；The described multiple steam fumarole of steam orifice plate (4) circle distribution (4A), the multiple jet expansion of shower nozzle (8) circle distribution (8A).
2. catalytic cracking Novel atomized feed nozzle as claimed in claim 1, it is characterized in that, the trunnion (6) of catalytic cracking Novel atomized feed nozzle has multiple shrinkage expansion range of atomization, i.e. has and organizes expansion segment (9), aditus laryngis section (10) and contraction section (11) more.
3. catalytic cracking Novel atomized feed nozzle as claimed in claim 1, it is characterised in that the steam orifice plate (4) of catalytic cracking Novel atomized feed nozzle is around the steam fumarole (4A) of N number of diameter phi D of inner tube (7) circle distribution, and N, D are determined by quantity of steam.
4. catalytic cracking Novel atomized feed nozzle as claimed in claim 1, it is characterised in that steam fumarole (4A) can be arranged in inner tube (7).
5. catalytic cracking Novel atomized feed nozzle as claimed in claim 1, it is characterized in that, shower nozzle (8) circumference arranges multiple jet expansion (8A), and the structure of each jet expansion (8A) is set to be made up of contraction section (8D), aditus laryngis section (8C), expansion segment (8B).
6. the catalytic cracking Novel atomized feed nozzle as described in claim 1 or 5, it is characterised in that the layout of jet expansion (8A) can be provided in round the various arrangement form such as layout that is uniform, oval or that limit vertical direction width on transverse section.
7. the catalytic cracking Novel atomized feed nozzle as described in claim 1 or 6, it is characterized in that, the surface of shower nozzle (8) port of export is designed as the tangent plane that inclination angle is α in the horizontal direction, α is 0-30 °, jet expansion (8A) centrage is that β, β are 0-30 ° in the horizontal direction with shower nozzle axis angle；Arrangement above make steam carry raw oil by jet expansion (8A) spray after in sector to both sides expand, form broader steam curtain screen, so that raw oil is fully reacted with catalyst.
8. the catalytic cracking Novel atomized feed nozzle as described in claim 1 or 6, it is characterised in that the jet expansion (8A) above shower nozzle (8) exit end face horizontal axis deflects down C1 angle at Way out；Jet expansion (8A) below shower nozzle (8) exit end face horizontal axis upward deflects C2 angle at Way out；The outlet streams making diverse location is pooled to flat area in reactor；Corresponding different C1 and the C2 numerical value of outlet away from shower nozzle (8) exit end face vertical centrage different distance, C1 and C2 is determined by the atomization logistics jet length L-value reacting requirement.
9. catalytic cracking Novel atomized feed nozzle as claimed in claim 1, it is characterized in that, jet expansion (8A) inner surface of shower nozzle (8) or jet expansion (8A) contraction section (8D) inner surface or jet expansion (8A) contraction section (8D) and aditus laryngis section (8C) inner surface are set to leafy grass shape, and this setting makes third level atomizing steam higher to impact, the breaking capacity of raw oil.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476268.1A CN106010630B (en) | 2016-06-27 | 2016-06-27 | A kind of atomizing nozzle for feeding raw material in catalytic cracking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476268.1A CN106010630B (en) | 2016-06-27 | 2016-06-27 | A kind of atomizing nozzle for feeding raw material in catalytic cracking |
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| CN106010630A true CN106010630A (en) | 2016-10-12 |
| CN106010630B CN106010630B (en) | 2019-01-01 |
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Cited By (6)
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| CN107126831A (en) * | 2017-06-20 | 2017-09-05 | 佛山市三水新明珠建陶工业有限公司 | A kind of injector for SNCR denitration system |
| CN109264753A (en) * | 2017-07-18 | 2019-01-25 | 神华集团有限责任公司 | Raw slurry spraying gun, alumina rotary kiln and the method for spraying raw slurry |
| CN109385294A (en) * | 2017-08-08 | 2019-02-26 | 中国石油天然气股份有限公司 | A kind of catalytic cracking nozzle and application |
| CN112354711A (en) * | 2020-12-16 | 2021-02-12 | 青岛诺诚化学品安全科技有限公司 | Inhibitor multistage atomization method |
| CN114749296A (en) * | 2022-05-12 | 2022-07-15 | 鑫广绿环再生资源股份有限公司 | Urea solution atomizing spray gun |
| CN114849592A (en) * | 2022-05-11 | 2022-08-05 | 湖南长科诚享石化科技有限公司 | Method and system for pre-atomizing catalytic feed oil |
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| CN109264753B (en) * | 2017-07-18 | 2021-08-17 | 国家能源投资集团有限责任公司 | Raw slurry spray gun, alumina clinker kiln and raw slurry spraying method |
| CN109385294A (en) * | 2017-08-08 | 2019-02-26 | 中国石油天然气股份有限公司 | A kind of catalytic cracking nozzle and application |
| CN109385294B (en) * | 2017-08-08 | 2020-12-01 | 中国石油天然气股份有限公司 | Catalytic cracking nozzle and application |
| CN112354711A (en) * | 2020-12-16 | 2021-02-12 | 青岛诺诚化学品安全科技有限公司 | Inhibitor multistage atomization method |
| CN114849592A (en) * | 2022-05-11 | 2022-08-05 | 湖南长科诚享石化科技有限公司 | Method and system for pre-atomizing catalytic feed oil |
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