CN202290379U - Heavy oil catalytic cracking spray nozzle with tangential feeding - Google Patents
Heavy oil catalytic cracking spray nozzle with tangential feeding Download PDFInfo
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- CN202290379U CN202290379U CN2011203842910U CN201120384291U CN202290379U CN 202290379 U CN202290379 U CN 202290379U CN 2011203842910 U CN2011203842910 U CN 2011203842910U CN 201120384291 U CN201120384291 U CN 201120384291U CN 202290379 U CN202290379 U CN 202290379U
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Abstract
The utility model belongs to the technical field of petrochemical industry, and relates to a heavy oil catalytic cracking spray nozzle with tangential feeding. A primary steam pipe (3) is arranged inside an outer sleeve (1) of the spray nozzle, and a primary steam spray hole I (6) and a primary steam spray hole II (5) are respectively arranged at the end socket and the front end of the primary steam pipe (3) in the outer sleeve (1); an inner sleeve (4) is surrounded the primary steam pipe (3), and a raw oil inlet pipe (2) tangential with the outer sleeve (1) is arranged; the inner sleeve (4) is provided with a contraction segment (9), a throat segment (10) and an expansion segment (11); a pressure stabilizing segment (18) is arranged between the expansion segment (11) and a spray head (15); a secondary steam chamber (13) is formed between the outer sleeve (1) and the inner sleeve (4); a secondary steam spray hole (14) is arranged at the end socket of the secondary steam chamber (13); and a nozzle orifice (16) is arranged on the spray head (15). The heavy oil catalytic cracking spray nozzle provided by the utility model has high wear resistance and clogging resistance and good atomization effect.
Description
Technical field
The utility model belongs to the petroleum refining field, relates generally to a kind of RFCC nozzle of tangential feed.
Background technology
The shortage of petroleum resources and crude oil is heaviness day by day, and heavy oil catalytic cracking process and equipment thereof are had higher requirement.Wherein, catalytic cracking feed nozzle, the particularly RFCC feed nozzle important that in catalytic cracking process, just seems.The atomizing that nozzle is good can improve light oil yield, reduces coke yield, improve product and distribute, and can device periodic duty also closely related therewith.
For this reason, the catalytic cracking feed nozzle has obtained developing rapidly, and constantly has new heavy-oil catalytic feed nozzle to come out.
, have Kellogg company and Mobil company to work out ATWAX type nozzle abroad, Uop Inc. works out Optimix type nozzle, and Texaco company develops Micro-Jet type nozzle by name.
Domestic, have Chinese Academy of Sciences's mechanics KH type nozzle, the BWJ type nozzle of Sinopec Beijing petrochemical industry project company, the CS type nozzle of Sentai Petrochemical Machinery Co., Ltd., Luoyang, the LPEC-E type nozzle of Sinopec Luoyang Petrochemical engineering company etc.
More than all kinds of nozzles in use all the degree difference have following one or more shortcomings: atomizing effect is not ideal enough; The atomizing medium consumption is big; The right property of operation should be relatively poor, has coking phenomenon to take place; Jet velocity is too high, and catalyst is had pulverizing, causes problems such as slurry oil solid content and balance catalyst fines be bigger than normal.
Summary of the invention
The utility model proposes a kind of RFCC nozzle of tangential feed for solving the problems of the technologies described above.
The utility model adopts following technical scheme for accomplishing the foregoing invention purpose:
A kind of RFCC nozzle of tangential feed, the outer tube of said RFCC nozzle are tubular cylinder; The primary steam chamber that is made up of the primary steam pipe is set in the sleeve pipe outside; One end of primary steam pipe is the steam inlet, and the other end of primary steam pipe stretches in the outer tube and has primary steam spray orifice I in its termination, in the front end edge circle distribution of primary steam pipe a plurality of primary steam spray orifice II is arranged; Be provided with inner sleeve in the sleeve pipe outside, the rear portion ring of inner sleeve encloses the primary steam pipe, and the toroidal cavity between said outer tube, inner sleeve and the primary steam pipe constitutes inlet space; Corresponding inlet space is provided with the feedstock oil oil inlet pipe, and described feedstock oil oil inlet pipe and outer tube are tangent; The procephalic inner sleeve cavity of primary steam pipe end forms the mixing chamber of feedstock oil and primary steam; Described inner sleeve has the contraction section of undergauge, the equal diameter trunnion section identical with the minor diameter of contraction section, the expansion segment of hole enlargement; Between the expansion segment of inner sleeve and shower nozzle, have isodiametric pressure-stabilizing section, the diameter of said pressure-stabilizing section is identical with the major diameter of inner sleeve expansion segment; The primary steam spray orifice I of the pressure-stabilizing section between the contraction section of said inner sleeve, trunnion section, expansion segment, expansion segment and the shower nozzle, primary steam pipe, primary steam spray orifice II constitute the primary atomization structure of feedstock oil; Toroidal cavity between outer tube and the inner sleeve constitutes the indirect steam chamber, and corresponding described indirect steam chamber is provided with the indirect steam inlet tube; There are a plurality of indirect steam spray orifices termination in said indirect steam chamber along circle distribution, and the indirect steam spray orifice is positioned at the rear portion of pressure-stabilizing section and is communicated with pressure-stabilizing section, constitutes the secondary-atomizing structure of feedstock oil; The spout that on described shower nozzle, is provided with, three atomizing structures of formation feedstock oil.
It is said that the indirect steam spray orifice of circle distribution is a row or many rows along termination, indirect steam chamber.
The angle of throat of said inner sleeve contraction section is 50～90 degree; The angle of flare of expansion segment is 40～80 degree; The length of contraction section is 3～6 times of trunnion section diameter; The length of expansion segment is 4～8 times of trunnion section diameter; The length of outer tube front end pressure-stabilizing section is 1.5～2.5 times of trunnion section diameter; Trunnion section draw ratio is 0.5～1.6.
The angle of indirect steam inlet tube and indirect steam chamber is 50～90 degree.
The RFCC nozzle of a kind of tangential feed that the utility model proposes, three times the atomizing structure makes atomizing particle size thin, and particle size distribution is even; Because feedstock oil passes through contraction section with steam; The trunnion section, expansion segment, pressure-stabilizing section; So be difficult for stopping up, accident such as wearing and tearing; Have higher wear-resistant, performance of anti-blockage and good atomizing effect, the normal distribution of atomizing particle size is more reasonable, and jet expansion atomization angle coverage rate is wideer.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of shower nozzle in the utility model.
Fig. 4 is the another kind of structural representation of shower nozzle in the utility model.
Among the figure: 1, outer tube, 2, the feedstock oil oil inlet pipe, 3, the primary steam pipe, 4, inner sleeve, 5, primary steam spray orifice II; 6, primary steam spray orifice I, 7, inlet space, 8, mixing chamber, 9, contraction section, 10, the trunnion section; 11, expansion segment, 12, the indirect steam inlet tube, 13, the indirect steam chamber, 14, the indirect steam spray orifice; 15, shower nozzle, 16, spout, 17, inner chamber, 18, pressure-stabilizing section.
The specific embodiment
In conjunction with accompanying drawing and specific embodiment the utility model is explained:
Like Fig. 1, shown in Figure 2, a kind of RFCC nozzle of tangential feed, described RFCC nozzle has outer tube 1, and described outer tube 1 is a tubular cylinder; In the sleeve pipe 1 the primary steam chamber that is made up of the primary steam pipe is set outside; One end of primary steam pipe 3 is the steam inlet, and the other end stretches in the outer tube 1 and in its centre, termination has primary steam spray orifice I 6, in the front end edge circle distribution of primary steam pipe 3 a plurality of primary steam spray orifice II 5 is arranged; The diameter of primary steam spray orifice I 5, II 5 is 1～5mm; Be provided with inner sleeve 4 outside in the sleeve pipe, the rear portion of inner sleeve 4 ring encloses primary steam pipe 3, the toroidal cavity formation inlet space 7 between said outer tube 1, inner sleeve 4 and the primary steam pipe 3; Corresponding inlet space is provided with feedstock oil oil inlet pipe 2, and described feedstock oil oil inlet pipe 2 is tangent with outer tube 1; The anterior inner sleeve cavity in primary steam pipe 3 terminations forms the mixing chamber 8 of feedstock oil and primary steam; Described inner sleeve has the contraction section 9 of undergauge, the equal diameter trunnion section 10 identical with the minor diameter of contraction section, the expansion segment 11 of hole enlargement; The contraction section 9 of said inner sleeve 4, trunnion section 10, expansion segment 11 are extremely before set gradually by the back along the flow direction of feedstock oil; Angle of throat 50～90 degree of said contraction section 9; The angle of flare 40～80 degree of expansion segment 11; The length of contraction section 9 is 3～6 times of trunnion section 10 diameters; The length of expansion segment 11 is 4～8 times of trunnion section 10 diameters; Trunnion section 10 draw ratios 0.5～1.6.Between the expansion segment 11 of inner sleeve and shower nozzle 15, have isodiametric pressure-stabilizing section 18, the diameter of said pressure-stabilizing section 18 is identical with the major diameter of inner sleeve expansion segment; The length of pressure-stabilizing section 18 is 1.5～2.5 times of inner sleeve trunnion section 10 diameters.The primary steam spray orifice I 6 of the pressure-stabilizing section 18 between the contraction section 9 of said inner sleeve, trunnion section 10, expansion segment 11, expansion segment 11 and the shower nozzle 15, primary steam pipe 3, primary steam spray orifice II 5 constitute the primary atomization structure of feedstock oil; Toroidal cavity between outer tube 1 and the inner sleeve 4 constitutes indirect steam chamber 13, and corresponding described indirect steam chamber is provided with indirect steam inlet tube 12, and indirect steam inlet tube 12 is 90 degree with the angle of indirect steam chamber 13; Along circle distribution a plurality of indirect steam spray orifices 14 are arranged said, among this embodiment, set indirect steam spray orifice 14 is a row, and the diameter of indirect steam spray orifice 14 is 1～5mm; Indirect steam spray orifice 14 is positioned at the rear portion of pressure-stabilizing section 18 and is communicated with pressure-stabilizing section 18, constitutes the secondary-atomizing structure of feedstock oil; Shower nozzle 15 be positioned at the outer tube termination and with the coaxial setting of outer tube, the spout 16 that on described shower nozzle 15, is provided with constitutes three atomizing structures of feedstock oil.
In conjunction with Fig. 3, Fig. 4, described spout 16 cross sectional shapes are that long strip type is flat-shaped; Spout 16 can be one or two.
Operating process below in conjunction with description of drawings the utility model:
The utility model operating process is that feedstock oil gets into inlet space 7 by oil inlet pipe 2 tangentials; Water vapour gets into primary steam pipe 3; Feedstock oil with certain centrifugal force is after contraction section 9 quickens; Primary steam spray orifice II 5, primary steam spray orifice I 6 in primary steam chamber 4 spray under the effect of steam ejections; Trunnion section 10 is further pushed, quickens, shears, is rotated the liquid film or the brin that make formation and accomplishes atomizing for the first time through expansion segment 11, pressure-stabilizing section 18, sprays the shear action of steam again via the indirect steam spray orifice 14 of indirect steam chamber 13, has obtained secondary-atomizing; Get into spout 16 at last; Because spout 16 abrupt pressure reductions, the steam bubble blast of further expanding in the drop, and under the effect that exports sharp sharp edge; Oil droplet is produced further destruction be referred to as three atomizings, get into riser and regenerated catalyst Contact Evaporating, reaction afterwards.
Claims (4)
1. the RFCC nozzle of a tangential feed, the outer tube of said RFCC nozzle (1) is a tubular cylinder; It is characterized in that: the primary steam chamber that is made up of primary steam pipe (3) is set in the sleeve pipe (1) outside; One end of primary steam pipe (3) is the steam inlet; The other end of primary steam pipe (3) stretches in the outer tube (1) and has primary steam spray orifice I (6) in its termination, in the front end edge circle distribution of primary steam pipe (3) a plurality of primary steam spray orifice II (5) is arranged; Be provided with inner sleeve (4) in the sleeve pipe (1) outside, the rear portion ring of inner sleeve (4) encloses primary steam pipe (3), and the toroidal cavity between said outer tube (1), inner sleeve (4) and the primary steam pipe (3) constitutes inlet space (7); Corresponding inlet space (7) is provided with feedstock oil oil inlet pipe (2), and described feedstock oil oil inlet pipe (2) is tangent with outer tube (1); The anterior inner sleeve cavity in primary steam pipe (3) termination forms the mixing chamber (8) of feedstock oil and primary steam; Described inner sleeve (4) has the contraction section (9) of undergauge, the equal diameter trunnion section (10) identical with the minor diameter of contraction section, the expansion segment (11) of hole enlargement; Between the expansion segment (11) of inner sleeve and shower nozzle (15), have isodiametric pressure-stabilizing section (18), the diameter of said pressure-stabilizing section (18) is identical with the major diameter of inner sleeve expansion segment; Pressure-stabilizing section (18) between the contraction section (9) of said inner sleeve (4), trunnion section (10), expansion segment (11), expansion segment (11) and the shower nozzle (15), the primary steam spray orifice I (6) of primary steam pipe (3), primary steam spray orifice II (5) constitute the primary atomization structure of feedstock oil; Toroidal cavity between outer tube (1) and the inner sleeve (4) constitutes indirect steam chamber (13), and corresponding described indirect steam chamber (13) is provided with indirect steam inlet tube (12); There are a plurality of indirect steam spray orifices (14) termination in said indirect steam chamber (13) along circle distribution, and indirect steam spray orifice (14) is positioned at the rear portion of pressure-stabilizing section (18) and is communicated with pressure-stabilizing section (18), constitutes the secondary-atomizing structure of feedstock oil; Go up the spout (16) that is provided with at described shower nozzle (15), constitute three atomizing structures of feedstock oil.
2. the RFCC nozzle of a kind of tangential feed according to claim 1 is characterized in that: said the indirect steam spray orifice (14) of circle distribution is a row or many rows along termination, indirect steam chamber (13).
3. the RFCC nozzle of a kind of tangential feed according to claim 1 is characterized in that: the angle of throat of said inner sleeve contraction section (9) is 50～90 degree; The angle of flare of expansion segment (11) is 40～80 degree; The length of contraction section (9) is 3～6 times of trunnion section (10) diameter; The length of expansion segment (11) is 4～8 times of trunnion section (10) diameter; The length of outer tube front end pressure-stabilizing section (18) is 1.5～2.5 times of trunnion section diameter; Trunnion section (10) draw ratio is 0.5～1.6.
4. the RFCC nozzle of a kind of tangential feed according to claim 1 is characterized in that: indirect steam inlet tube (12) is 50～90 degree with the angle of indirect steam chamber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203842910U CN202290379U (en) | 2011-10-11 | 2011-10-11 | Heavy oil catalytic cracking spray nozzle with tangential feeding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203842910U CN202290379U (en) | 2011-10-11 | 2011-10-11 | Heavy oil catalytic cracking spray nozzle with tangential feeding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202290379U true CN202290379U (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203842910U Expired - Lifetime CN202290379U (en) | 2011-10-11 | 2011-10-11 | Heavy oil catalytic cracking spray nozzle with tangential feeding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202290379U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827627A (en) * | 2012-09-13 | 2012-12-19 | 洛阳森德石化工程有限公司 | Multistage atomized heavy oil catalytic cracking anti-coking nozzle |
| CN102827628A (en) * | 2012-09-13 | 2012-12-19 | 洛阳森德石化工程有限公司 | Heavy oil catalytic cracking feeding atomizing nozzle |
| CN104293372A (en) * | 2014-08-25 | 2015-01-21 | 洛阳帝博石化装备有限公司 | Heavy oil catalysis atomizing nozzle |
| CN104293373A (en) * | 2014-08-25 | 2015-01-21 | 洛阳帝博石化装备有限公司 | Heavy oil catalysis atomizing nozzle |
| CN105090951A (en) * | 2015-07-01 | 2015-11-25 | 洛阳帝博石化装备有限公司 | Novel heavy oil spray nozzle |
| CN105879793A (en) * | 2015-01-20 | 2016-08-24 | 中石化洛阳工程有限公司 | Oil inlet distribution tube for wood tar fluidized bed hydrogenation reactor |
| EP3101093A1 (en) | 2015-06-03 | 2016-12-07 | Indian Oil Corporation Limited | Fcc feed injector with improved atomization |
| WO2018211531A1 (en) * | 2017-05-18 | 2018-11-22 | Hindustan Petroleum Corporation Limited | Fluid atomizer, fluidized catalytic cracking unit and method of cracking heavy hydrocarbon fuel |
| US10159951B2 (en) | 2015-06-03 | 2018-12-25 | Indian Oil Corporation Limited | FCC feed injector with improved atomization |
-
2011
- 2011-10-11 CN CN2011203842910U patent/CN202290379U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102827627A (en) * | 2012-09-13 | 2012-12-19 | 洛阳森德石化工程有限公司 | Multistage atomized heavy oil catalytic cracking anti-coking nozzle |
| CN102827628A (en) * | 2012-09-13 | 2012-12-19 | 洛阳森德石化工程有限公司 | Heavy oil catalytic cracking feeding atomizing nozzle |
| CN104293372A (en) * | 2014-08-25 | 2015-01-21 | 洛阳帝博石化装备有限公司 | Heavy oil catalysis atomizing nozzle |
| CN104293373A (en) * | 2014-08-25 | 2015-01-21 | 洛阳帝博石化装备有限公司 | Heavy oil catalysis atomizing nozzle |
| CN104293372B (en) * | 2014-08-25 | 2016-04-13 | 洛阳帝博石化装备有限公司 | Heavy-oil catalytic atomizing nozzle |
| CN105879793A (en) * | 2015-01-20 | 2016-08-24 | 中石化洛阳工程有限公司 | Oil inlet distribution tube for wood tar fluidized bed hydrogenation reactor |
| CN105879793B (en) * | 2015-01-20 | 2018-07-31 | 中石化洛阳工程有限公司 | A kind of oil inlet distributor pipe for wood tar boiling bed hydrogenation reactor |
| EP3101093A1 (en) | 2015-06-03 | 2016-12-07 | Indian Oil Corporation Limited | Fcc feed injector with improved atomization |
| US10159951B2 (en) | 2015-06-03 | 2018-12-25 | Indian Oil Corporation Limited | FCC feed injector with improved atomization |
| CN105090951A (en) * | 2015-07-01 | 2015-11-25 | 洛阳帝博石化装备有限公司 | Novel heavy oil spray nozzle |
| CN105090951B (en) * | 2015-07-01 | 2017-10-31 | 洛阳帝博石化装备有限公司 | A kind of heavy oil nozzle |
| WO2018211531A1 (en) * | 2017-05-18 | 2018-11-22 | Hindustan Petroleum Corporation Limited | Fluid atomizer, fluidized catalytic cracking unit and method of cracking heavy hydrocarbon fuel |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan Patentee after: Luoyang Ruichang Environmental Engineering Co., Ltd. Address before: 471003 No. 8, Yan Guang road, high and new technology development zone, Luoyang, Henan Patentee before: Luoyang Ruichang Petrochemical Equipment Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |