CN2848368Y - Heavy oil feeding atomization nozzle - Google Patents
Heavy oil feeding atomization nozzle Download PDFInfo
- Publication number
- CN2848368Y CN2848368Y CN 200520143522 CN200520143522U CN2848368Y CN 2848368 Y CN2848368 Y CN 2848368Y CN 200520143522 CN200520143522 CN 200520143522 CN 200520143522 U CN200520143522 U CN 200520143522U CN 2848368 Y CN2848368 Y CN 2848368Y
- Authority
- CN
- China
- Prior art keywords
- steam
- distribution
- pipe
- heavy oil
- row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a heavy oil feeding atomization nozzle for a petroleum processing catalytic cracking device in order to solve the problems of large atomization particle diameter, oversize jet velocity, nonuniform atomization, etc. existing in the present nozzle. A steam divider (8) is coaxially arranged in the inner cavity (5) of a cylindrical nozzle body by the utility model; the steam divider (8) is connected with a steam inlet (1) through a transition section (9). At least three rows of steam distribution pipes (3) are arranged along the axial direction of the steam divider (8); at least three steam distribution pipes (3) are arranged around the circumferential direction of the steam divider (8) by each row of steam distribution pipes (3). The steam distribution pipes (3) are slantwise or vertically arranged correspondingly to the axial direction of the steam divider (8); the length a of the steam distribution pipes (3) in two adjacent rows of steam distribution pipes (3) gradually increases along the direction from the feeding section of the nozzle body (4) to the outlet section of the nozzle body (4). The utility model is mainly used for catalytic cracking devices of petroleum processing industry.
Description
Technical field
The utility model relates to the used a kind of heavy oil feed atomizer of PETROLEUM PROCESSING catalytic cracking unit.
Background technology
In catalytic cracking (FCC) process, the quality of feed nozzle performance distributes to cracking reaction, product and plays an important role; Particularly when being raw material with heavy oil, this influence is particularly outstanding.Wellatomized charging and high-temperature regenerated catalyst short-time contact, carry out violent catalytic cracking reaction, can improve yield of light oil, reduce coke yield, improve the product distribution, prevent overcracking, eliminate the coking phenomenon in the riser reactor, bring considerable economic.Therefore, both at home and abroad new and effective heavy oil feed atomizer is being continually developed always and released to relevant enterprise, with the needs that adapt to heavy oil deep processing technical development and obtain bigger economic benefit.
At present both at home and abroad the heavy oil feed atomizer that uses is divided into following a few class substantially: the first kind is improved on wikipedia type nozzle basis and is formed, and is characterized in utilizing convergence-expansion shape venturi to improve gas flow rate and gas-liquid two-phase speed difference with the increase intensity (referring to CN2069757U) that atomizes as far as possible; Second class is target spray nozzle (referring to US4434049), its principle is that feed oil forms high-speed jet bump metallic target under the High Pressure Difference effect, carries out the atomizing first time with the crossflow effect again, forms the aerosol two phase flow, quicken at shower nozzle spout place at last, realize secondary-atomizing.This nozzle atomization intensity height, but need very high input pressure and more atomizing medium (atomizing medium is a water vapour), thereby energy consumption is higher, has increased the investment of production cost and scrap build; The 3rd class is a hybrid feed nozzle (referring to CN2054461U) in two venturis; The 4th class is two-fluid rotarytype injector (referring to CN2356752Y), has wherein adopted the two-phase cyclone.
More than the shortcoming that exists of all kinds of nozzles be: atomizing particle size is bigger, and Suo Taier diameter (cold examination) is mostly more than 60 microns; The spouting velocity that has excessive (cause flowing instability and mechanical oscillation occur), the atomizing that has is inhomogeneous; The required input pressure of the nozzle that also has is higher, atomizing medium is more, causes energy consumption higher.
Summary of the invention
Technical problem to be solved in the utility model is: the higher and more energy consumption that causes of atomizing medium of the input pressure that the existing atomizing particle size of existing heavy oil feed atomizer is big, spouting velocity is excessive, atomizing is inhomogeneous, required is than problems such as height.
For addressing the above problem, the technical solution adopted in the utility model is: a kind of heavy oil feed atomizer, be provided with the mouth body, the mouth body has a mouth intracoelomic cavity, the feed zone of mouth body is provided with the steam inlet, the feedstock oil inlet, the outlet section of mouth body is provided with shower nozzle, the end of shower nozzle is provided with spout, it is characterized in that: the mouth intracoelomic cavity is cylindrical, the interior steam diversion pipe that is coaxially arranged with it of mouth intracoelomic cavity, one end of steam diversion pipe links to each other with the steam inlet by changeover portion, other end sealing, along at least 3 row's distribution of steam pipes that are axially arranged with of steam diversion pipe, every row's distribution of steam pipe is provided with 3 distribution of steam pipes at least around the circumferencial direction of steam diversion pipe, the distribution of steam pipe is with respect to the axioversion or vertical setting of steam diversion pipe, and the direction of length along mouth body feed zone to outlet section of distribution of steam pipe increases progressively in adjacent two row's distribution of steam pipes.
Adopt the utility model, have following beneficial effect: the utility model heavy oil feed atomizer is in operating process, heavy oil feed enters the mouth intracoelomic cavity by the feedstock oil inlet, and water vapour is entered the steam diversion pipe, sprays into the mouth intracoelomic cavity by the outlet of being located at the many rows distribution of steam pipe on the steam diversion pipe again through changeover portion by the steam inlet.In the operating process, the mouth intracoelomic cavity is as the mixed aerosol chamber; Heavy oil feed is fully mixed therein with water vapour by the outlet of distribution of steam pipe ejection, forms the oily vapour two phase flow that contains a lot of water vapours bubbles (by the oil plant coating), is sprayed by the spout on the shower nozzle at last.Pressure descended when oil vapour two phase flow was sprayed by spout, made the blast of water vapour bubble, thereby with the POL explosion atomizing around the water vapour bubble.Because the distribution of steam pipe is provided with many rows, every row is provided with many around the circumferencial direction of steam diversion pipe, and the direction of length along mouth body feed zone to outlet section of distribution of steam pipe increases progressively in adjacent two row's distribution of steam pipes, so just make water vapour axially also evenly distributing along the mouth intracoelomic cavity from different aspects, different radial position, different circumferencial direction coupler intracoelomic cavity, make heavy oil feed and water vapour carry out repeatedly fully mixed aerosol vertically, fully improve the utilization rate of mass-transfer efficiency and water vapour, reduced the consumption of atomizing medium (water vapour).The utility model is by introducing advanced effervescent atomization mechanism, make high viscosity heavy oil feed and water vapour form uniform bubble flow at the mouth intracoelomic cavity, spray through spout again, just can form very tiny drop (the Suo Taier diameter is generally about 60 microns), and distribute equably in spout ejection space, statistical distribution characteristic is good, and jet velocity lower (spout place jet velocity is less than 80 meter per seconds); Heavy oil feed can fully be contacted with catalyst, thereby improve the reaction condition of catalytic cracking unit, improve the light oil productive rate of device and reduce the green coke amount.Because heavy oil feed and water vapour are abundant at mouth intracoelomic cavity mixed aerosol, so only need use lower oil pressure (to be generally 0.3～0.6MPa) and less water vapour (the water vapour consumption is generally 3～6 weight % of heavy oil feed amount), can obtain good atomizing effect, so just reduce the energy consumption of nozzle.In addition, because water vapour and heavy oil feed be in the mixed aerosol mode of mouth intracoelomic cavity as mentioned above, when heavy oil feed amount to some extent during increase and decrease, the volume flow variation of oily vapour two phase flow is less relatively, can obviously not influence atomization quality, thereby make that operating flexibility of the present utility model is good, reliability is high.Advantage simple in structure, easy to use, that be easy to promote that the utility model also has.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.The drawings and specific embodiments do not limit the claimed scope of the utility model.
Description of drawings
Fig. 1 is the utility model heavy oil feed atomizer cutaway view vertically.
Fig. 2 is the A-A cutaway view among Fig. 1, and the deployment scenarios of first row's distribution of steam pipe is shown.
Fig. 3 is the B-B cutaway view among Fig. 1, and the deployment scenarios of second row's distribution of steam pipe is shown.
The specific embodiment
Referring to heavy oil feed atomizer of the present utility model shown in Figure 1 (abbreviation nozzle).This nozzle is provided with mouth body 4, and mouth body 4 has a mouth intracoelomic cavity 5.The feed zone of mouth body 4 is provided with steam inlet 1, feedstock oil inlet 2, and the outlet section of mouth body 4 is provided with shower nozzle 6, and the end of shower nozzle 6 is provided with spout 7.Wherein shower nozzle 6 is a conventional structure, is welded to connect with mouth body 4; Spout 7 can adopt existing flat mouthful or cellular spout commonly used.Feedstock oil inlet 2 adopts usual manner to be arranged on the feed zone of mouth body 4, and general the employing is welded to connect, and is connected with mouth intracoelomic cavity 5.
Mouth intracoelomic cavity 5 is cylindrical.Be coaxially arranged with steam diversion pipe 8 with it in the mouth intracoelomic cavity 5, an end of steam diversion pipe 8 links to each other with steam inlet 1 by changeover portion 9, other end sealing.The blind end of steam diversion pipe 8 can stretch in the shower nozzle 6 (as shown in Figure 1), also can be positioned at mouth intracoelomic cavity 5.Changeover portion 9 is located at the end of mouth body 4 feed zones, and it has the inner chamber of a truncated cone-shaped; The tip circle of this inner chamber is connected with steam diversion pipe 8, and end circle is connected with steam inlet 1.Being connected of changeover portion 9 and mouth body 4 feed zone ends, steam diversion pipe 8, steam inlet 1, generally all adopt to be welded to connect.
Referring to Fig. 1, along at least 3 row's distribution of steam pipes 3 that are axially arranged with of steam diversion pipe 8, every row's distribution of steam pipe 3 is provided with 3 distribution of steam pipes 3 at least around the circumferencial direction of steam diversion pipe 8.One end of every distribution of steam pipe 3 is outlet, and the other end is welded on the steam diversion pipe 8 corresponding to the perforate on the steam diversion pipe 8.Nozzle shown in Figure 1 is provided with 6 row's distribution of steam pipes 3, and every row's distribution of steam pipe 3 is provided with 6 distribution of steam pipes 3 (referring to Fig. 2, Fig. 3).Generally speaking, distribution of steam pipe 3 is provided with 3～50 rows, and every row's distribution of steam pipe 3 is provided with 3～10 distribution of steam pipes 3 (circumferencial direction around steam diversion pipe 8 is uniform).
Distribution of steam pipe 3 is with respect to the axioversion or vertical setting of steam diversion pipe 8; Referring to Fig. 1, the angle α between distribution of steam pipe 3 and the steam diversion pipe 8 is generally 10～90 degree.The direction of length a along mouth body 4 feed zones to outlet section of distribution of steam pipe 3 increases progressively in adjacent two row's distribution of steam pipes 3, increases progressively 3～10 millimeters generally speaking.Wherein the length a of distribution of steam pipe 3 can be 0 in first row's distribution of steam pipe 3, and distribution of steam pipe 3 contracted and became perforate on the steam diversion pipe 8 this moment.The outlet of distribution of steam pipe 3 can reach the surface of mouth intracoelomic cavity 5 in last row's distribution of steam pipe 3.It is to count from the end that steam diversion pipe 8 links to each other with changeover portion 9 that the row of above-mentioned distribution of steam pipe 3 counts sequence number.
Distribution of steam pipe 3 adopts above-mentioned set-up mode, mainly be for make water vapour mouth intracoelomic cavity 5 in evenly distribution and with the abundant mixed aerosol of heavy oil feed.For reaching this purpose better, adjacent two row's distribution of steam pipes 3 preferably are staggeredly arranged, and this is a kind of preferred version of the present utility model.Fig. 2 is the deployment scenarios of first row's distribution of steam pipe 3, and Fig. 3 is second deployment scenarios of arranging distribution of steam pipe 3 that is adjacent; By figure obviously as seen, each the root distribution of steam pipe 3 in this two rows distribution of steam pipe 3 is staggeredly arranged; Below respectively arranging distribution of steam pipe 3 alternately is staggeredly arranged according to this.Under the situation that the quantity of distribution of steam pipe 3 is different in each row's distribution of steam pipe 3, preferably also adopt the above-mentioned mode that is staggeredly arranged.
Other some structural parameters of the utility model heavy oil feed atomizer can be selected as required, and the utility model is not done special qualification.Referring to Fig. 1, these structural parameters are generally as follows: feedstock oil inlet 2 distance b to mouth body 4 feed zone end faces are 10～100 millimeters, angle β between feedstock oil inlet 2 and the mouth body 4 is 1～90 degree, the diameter of mouth intracoelomic cavity 5 is 40～200 millimeters, the interior diameter of steam diversion pipe 8 is 10～50 millimeters, the interior diameter of distribution of steam pipe 3 is 3～10 millimeters, first row's distribution of steam pipe 3 to the distance c of changeover portion 9 is 0～10 millimeter, between adjacent two row's distribution of steam pipes 3 is 10～50 millimeters apart from d, and the total length L of nozzle is 500～2000 millimeters.
For each single distribution of steam pipe 3, the interior diameter of wherein each distribution of steam pipe 3, length, generally should keep identical with angle α between the steam diversion pipe 8.For many rows distribution of steam pipe 3, each quantity of arranging distribution of steam pipe 3 in the distribution of steam pipe 3 is preferably identical, each arrange angle (being equal to) between distribution of steam pipe 3 and the steam diversion pipe 8 with the angle α between single distribution of steam pipe 3 and the steam diversion pipe 8 can be identical also can be inequality.Referring to Fig. 1, the steam inlet 1 of the utility model nozzle, steam diversion pipe 8, changeover portion 9 and inner chamber thereof, mouth body 4 and mouth intracoelomic cavity 5, shower nozzle 6 generally are coaxial settings in addition.
Be that example illustrates operating process of the present utility model with nozzle shown in Figure 1 below.Heavy oil feed enters mouth intracoelomic cavity 5 by feedstock oil inlet 2, and water vapour is entered steam diversion pipe 8, sprays into mouth intracoelomic cavity 5 by the outlet of being located at the many rows distribution of steam pipe 3 on the steam diversion pipe 8 again through changeover portion 9 by steam inlet 1.Described water vapour is generally 250～400 ℃ superheated vapour, and heavy oil feed is reduced crude, decompression residuum etc.In the operating process, mouth intracoelomic cavity 5 is as the mixed aerosol chamber; Heavy oil feed is fully mixed therein with water vapour by the outlet of distribution of steam pipe 3 ejection, forms the oily vapour two phase flow (bubble flow) that contains a lot of water vapours bubbles (being coated by oil plant), is sprayed by the spout on the shower nozzle 67 at last.Pressure descended when oil vapour two phase flow was sprayed by spout 7, made the blast of water vapour bubble, thereby with the POL explosion atomizing on every side of water vapour bubble, and make it even distribution.Said process has promptly been finished the atomization process of heavy oil feed; Heavy oil feed after the atomizing enters riser reactor then and reacts.Generally about 60 microns, the jet velocity at spout 7 places is less than 80 meter per seconds (being generally 60 meter per seconds) for heavy oil feed atomizer of the present utility model, heavy oil feed atomizing particle size (Suo Taier diameter); The oil pressure of heavy oil feed is generally 0.3～0.6MPa, and the water vapour consumption is generally 3～6 weight % of heavy oil feed amount.
Among the utility model Fig. 2 and Fig. 3, the represented technical characterictic of all unaccounted Reference numerals all with Fig. 1 in identical.
Below with the specific embodiment structure of the present utility model and operating process are had been described in detail in conjunction with the accompanying drawings.The utility model is mainly used in the catalytic cracking unit of PETROLEUM PROCESSING industry oil plant as a kind of novel heavy oil feed atomizer.
Claims (3)
1, a kind of heavy oil feed atomizer, be provided with mouth body (4), mouth body (4) has a mouth intracoelomic cavity (5), the feed zone of mouth body (4) is provided with steam inlet (1), feedstock oil inlet (2), the outlet section of mouth body (4) is provided with shower nozzle (6), the end of shower nozzle (6) is provided with spout (7), it is characterized in that: mouth intracoelomic cavity (5) is for cylindrical, the interior steam diversion pipe (8) that is coaxially arranged with it of mouth intracoelomic cavity (5), one end of steam diversion pipe (8) links to each other with steam inlet (1) by changeover portion (9), other end sealing, the at least 3 row's distribution of steam pipes (3) that are axially arranged with along steam diversion pipe (8), every row's distribution of steam pipe (3) is provided with 3 distribution of steam pipes (3) at least around the circumferencial direction of steam diversion pipe (8), distribution of steam pipe (3) is with respect to the axioversion or vertical setting of steam diversion pipe (8), and the direction of length a along mouth body (4) feed zone to outlet section of distribution of steam pipe (3) increases progressively in adjacent two row's distribution of steam pipes (3).
2, heavy oil feed atomizer according to claim 1 is characterized in that: adjacent two row's distribution of steam pipes (3) are staggeredly arranged.
3, heavy oil feed atomizer according to claim 1 and 2, it is characterized in that: described distribution of steam pipe (3) is provided with 3～50 rows, every row's distribution of steam pipe (3) is provided with 3～10 distribution of steam pipes (3), angle α between distribution of steam pipe (3) and the steam diversion pipe (8) is 10～90 degree, and the direction of length a along mouth body (4) feed zone to outlet section of distribution of steam pipe (3) increases progressively 3～10 millimeters in adjacent two row's distribution of steam pipes (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520143522 CN2848368Y (en) | 2005-12-09 | 2005-12-09 | Heavy oil feeding atomization nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520143522 CN2848368Y (en) | 2005-12-09 | 2005-12-09 | Heavy oil feeding atomization nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2848368Y true CN2848368Y (en) | 2006-12-20 |
Family
ID=37520844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520143522 Expired - Lifetime CN2848368Y (en) | 2005-12-09 | 2005-12-09 | Heavy oil feeding atomization nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2848368Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107138306A (en) * | 2017-07-10 | 2017-09-08 | 沈晓兰 | A kind of PETROLEUM PROCESSING heavy oil feeding atomization nozzle |
| CN107185742A (en) * | 2017-06-27 | 2017-09-22 | 沈晓兰 | A kind of PETROLEUM PROCESSING mixed aerosol nozzle |
| CN107413545A (en) * | 2017-07-25 | 2017-12-01 | 沈晓兰 | A kind of new heavy oil feeding atomization nozzle |
-
2005
- 2005-12-09 CN CN 200520143522 patent/CN2848368Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107185742A (en) * | 2017-06-27 | 2017-09-22 | 沈晓兰 | A kind of PETROLEUM PROCESSING mixed aerosol nozzle |
| CN107138306A (en) * | 2017-07-10 | 2017-09-08 | 沈晓兰 | A kind of PETROLEUM PROCESSING heavy oil feeding atomization nozzle |
| CN107138306B (en) * | 2017-07-10 | 2019-01-11 | 绍兴柯桥嘉好钰定型有限公司 | A kind of PETROLEUM PROCESSING heavy oil feeding atomization nozzle |
| CN107413545A (en) * | 2017-07-25 | 2017-12-01 | 沈晓兰 | A kind of new heavy oil feeding atomization nozzle |
| CN107413545B (en) * | 2017-07-25 | 2019-05-07 | 新昌县麟耀建筑材料有限公司 | A kind of heavy oil feeding atomization nozzle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201900063U (en) | Bubble atomizing nozzle | |
| CN201900064U (en) | Swirl atomizing nozzle | |
| CN201250210Y (en) | Catalytic cracking feed nozzle | |
| CN200967809Y (en) | Heavy oil feeding atomization nozzle | |
| CN202063879U (en) | Catalytic cracking feed nozzle | |
| CN204051632U (en) | A kind of Venturi tube-type spreader gas-liquid allotter of high-efficient atomizing | |
| CN106010630A (en) | Feed atomizing nozzle for catalytic cracking | |
| CN2848368Y (en) | Heavy oil feeding atomization nozzle | |
| CN202786132U (en) | Multistage-atomization heavy oil catalytic cracking anti-coking nozzle | |
| CN202131286U (en) | Catalytic cracking and atomizing material feeding spray nozzle | |
| CN202099253U (en) | Feed nozzle of catalytic cracking device | |
| CN201372270Y (en) | Heavy oil feed nozzle of FCCU | |
| CN200978270Y (en) | Heavy-oil feeding atomization nozzle | |
| CN107138306B (en) | A kind of PETROLEUM PROCESSING heavy oil feeding atomization nozzle | |
| CN201439516U (en) | Catalytic cracking feed nozzle | |
| CN201896161U (en) | Catalytic cracking and atomizing feeding spray nozzle | |
| CN201776201U (en) | Catalytic cracking feeding spray nozzle | |
| CN203754651U (en) | Feeding nozzle of lifting pipe of high-efficiency catalytic cracking device | |
| CN202849336U (en) | Catalytic cracking feed nozzle | |
| CN203295441U (en) | Catalytic cracking feeding nozzle | |
| CN202849335U (en) | Catalytic cracking feed nozzle | |
| CN203999509U (en) | A kind of catalytic cracking feeding nozzle | |
| CN214288045U (en) | Two-fluid atomizer and spray granulation dryer using same | |
| CN104293372A (en) | Heavy oil catalysis atomizing nozzle | |
| CN204111685U (en) | Heavy-oil catalytic atomizing nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061220 |
|
| EXPY | Termination of patent right or utility model |