CN101307249A - High-efficiency atomising nozzle for catalytic cracking of dead oil - Google Patents
High-efficiency atomising nozzle for catalytic cracking of dead oil Download PDFInfo
- Publication number
- CN101307249A CN101307249A CNA2007100113512A CN200710011351A CN101307249A CN 101307249 A CN101307249 A CN 101307249A CN A2007100113512 A CNA2007100113512 A CN A2007100113512A CN 200710011351 A CN200710011351 A CN 200710011351A CN 101307249 A CN101307249 A CN 101307249A
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- China
- Prior art keywords
- oil
- nozzle
- catalytic cracking
- steam injector
- ring cavity
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- Pending
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- 238000004523 catalytic cracking Methods 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 53
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000571 coke Substances 0.000 abstract description 5
- 239000003054 catalyst Substances 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 2
- 230000001133 acceleration Effects 0.000 abstract 1
- 239000000295 fuel oil Substances 0.000 abstract 1
- 239000007921 spray Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004939 coking Methods 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005381 potential energy Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000002010 green coke Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
Images
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to an atomizing nozzle of a catalytic cracking device for oil refining. The device aims at resolving the technical problems in the atomizing nozzle of the prior catalytic cracking device that the processing economic benefit is seriously affected because the nozzle can not finish the processing of inferior material oil. The invention provides a catalytic cracking high-efficiency atomizing nozzle for heavy oil, and the nozzle comprises a steam ejector section, an oil-gas mixing chamber section and an oil-gas nozzle, wherein the steam ejector section is mainly formed by a steam ejector, and a pre-mixing ring cavity is coaxially sleeved outside the steam ejector, and a material oil inlet pipe is communicated with the pre-mixing ring cavity, and an outlet of the steam ejector of the pre-mixing ring cavity is provided outside with a porous oil injection annular plate, a plurality of oil injection holes of which are inclined toward the axial line, and a convergence acceleration section is arranged between the steam ejector section and the oil-gas mixing chamber section. The application of the technique has the advantages of improving the yield of products, obviously lowering the yield of cokes, obviously reducing the consumption of catalysts and eliminating the vibration of a nozzle pipeline.
Description
Technical field
What the present patent application related to is the atomizing nozzle improvement technology of oil refining processing catalytic cracking unit.
Background technology
Present catalytic cracking atomizing nozzle, use the KH type high efficiency nozzle of a wider wherein series products structure as the Chinese Academy of Sciences, shown in the synoptic diagram of Fig. 1, include oily vapour premix section, oily vapour mixing chamber region and nozzle, in the collecting tubule of oily vapour premix section stock oil feed-pipe feeding and steam injector coaxial package, and enter steam injector by the oilhole of steam injector center lumen wall, with the steam premix, spray into oily vapour mixing section more jointly, fogging oil vapour is sprayed into reactor riser by laval nozzle.Mostly other structure formation of prior art is the local improvement on this agent structure basis.The technical problem underlying that this agent structure exists is: the nozzle pipeline vibration is very big in the use, once the stock oil pipeline was once shattering, analyze its major technique reason and be that vertical steam direction sprays into steam injector, its striking energy gesture put serious disturbing influence the gesture of steam potential energy put, thereby produced great low-frequency vibration.In addition, the more major issue that prior art faces be under the high always general layout of world market Trend of Crude Oil Price, how to adapt to the consideration of economic benefit aspect, long residuum processing is adjusted into the processing that subtracts the slag raw material.Concoct normal slag stock oil with subtract slag mutually specific mass differ greatly, be high-density, high viscosity, high heavy metal content, difficult cracked oil raw material, adopt existing catalytic cracking unit processing less than one month, the riser reactor coking is serious, coke yield has risen to 13% by 8%, catalyzer seriously poisons, consumes high, the unit consumption agent by the 1.4Kg/ tondal to more than the 3Kg/ ton, product yield is had a strong impact on, if continue to adopt existing catalytic cracking atomizing nozzle structure, obviously can't realize the expection benefit that the replacement of stock oil can reach.Initial stage generally believe be oil abominable due to, but through technician's research and analysis in many ways, discovery exists the core reasons of above technical problem to be that existing nozzle structure is not suitable for poor residuum stock oil characteristic, and residual oil did not obtain fully broken and atomizing before entering riser reactor.
Summary of the invention
The goal of the invention of patent application of the present invention be to provide a kind of with the fully broken atomizing of inferior feedstock oil, make it fully to contact with effective catalyst, to improve yield, to reduce a kind of high-efficiency atomising nozzle for catalytic cracking of dead oil of coke yield and catalyst consumption.High-efficiency atomising nozzle for catalytic cracking of dead oil technical scheme provided by the invention, its major technique content is: a kind of high-efficiency atomising nozzle for catalytic cracking of dead oil, include the steam injector section successively, oil vapour mixing chamber region and oily vapour nozzle, the steam injector section mainly is made of steam injector, coaxial package also is provided with the premix ring cavity outside steam injector, the stock oil oil inlet pipe feeds the premix ring cavity, the steam injector outlet port of premix ring cavity is provided with porous oil injection annular plate, some injection oilholes of porous oil injection annular plate are the jet hole that tilts to axis, are provided with the convergence accelerating sections between steam injector section and the oily vapour mixing chamber region.
In above-mentioned overall technical architecture, be serially connected with the stock oil oil inlet pipe and be provided with gesture and put device, this gesture is put and is provided with porous rotation target plate in the grand extra heavy pipe chamber of device, removes the rotation wad cutter that its central shaft hole peripheral hardware has some rotation direction unanimities on this porous rotation target plate.
High-efficiency atomising nozzle for catalytic cracking of dead oil technical scheme provided by the invention, changed the high-speed mixing mode of stock oil and steam, formed along the hybrid mode of axis high-speed cruising, especially before stock oil enters nozzle arrangements, adopting gesture to put device will spray stock oil potential energy gesture and put, group's step-down of stock oil oil and high-speed impact are broken, and then under the high speed impact of steam, spray the bigger raising of its atomizing effect through nozzle.Its nozzle pipeline vibration is also eliminated thereupon in actual the use, and product yield obviously improves, and coke yield obviously descends, and the catalyzer usage quantity obviously reduces, and moves after four months no coking in the riser reactor.
Description of drawings
Fig. 1 is this existing KH type high-efficient atomizing structure of nozzle synoptic diagram
Fig. 2 and Fig. 3 are respectively the structural representation and the sectional structure charts of high-efficiency atomising nozzle for catalytic cracking of dead oil of the present invention
Fig. 4 is the A-A sectional view of Fig. 3
Fig. 5 is a radially enlarged view of oil injection annular plate.
Embodiment
The structure construction of high-efficiency atomising nozzle for catalytic cracking of dead oil provided by the invention as shown in drawings, enters to oily vapour mixing ejection by steam and is provided with steam injector section, oily vapour mixing chamber region and oily vapour nozzle 8 successively.The steam injector section mainly is made of steam injector 3, coaxial package is provided with premix ring cavity 2 outside steam injector 3, stock oil oil inlet pipe 1 connects through flange, feeding premix ring cavity 2 is provided with, premix ring cavity 2 has the oil injection annular plates 4 that have many injection oilholes 5 at steam injector 3 outlet port peripheral hardwares, injection oilhole 5 on it is the jet hole that tilts to focus on to its axis, high speed stock oil enters oily vapour mixing section 6 by the injection oilhole 5 of oil injection annular plate 4 simultaneously with high velocity vapor, liquid oils is broken under the high speed impact of high velocity vapor, atomizing mixes, its mixing time is 0.03 ~ 0.05 second, by the conically convergent accelerating sections 7 between steam injector section and the oily vapour mixing section 6, through the fully atomizing ejection of oily vapour nozzle 8.In the present embodiment structure, being serially connected with stock oil oil inlet pipe 1 is provided with gesture and puts device 9, this gesture is put in the device 9 grand extra heavy pipe chambeies and is provided with porous rotation target plate 10, remove the rotation wad cutter 11 that its central shaft hole peripheral hardware has some rotation direction unanimities on this porous rotation target plate 10, as shown in Figure 4, this gesture is put device 9 the original potential energy of stock oil is become striking energy, and high speed impact is to porous rotation target plate 10, make the step-down of oil group, adjustment impact and break, enter premix ring cavity 2.
Practical application effect of the present invention is:
Select for use stock oil character identical:
Main operational condition:
The final product that processes through high-efficiency atomising nozzle for catalytic cracking of dead oil of the present invention and catalytic cracking unit is distributed as (%, massfraction):
As can be seen from the above results, under, the essentially identical condition of operational condition identical in stock oil character, high-efficiency atomising nozzle for catalytic cracking of dead oil atomizing effect of the present invention obviously is better than existing KH type nozzle.The light liquid yield: the present invention exceeds KH-2 type 3.2%; Liquid hydrocarbon yield the present invention exceeds 2.2% than KH type; Yield of gasoline the present invention exceeds 0.5% than KH type; Diesel yield the present invention exceeds 0.5% than KH type.Gasoline wherein, the quality condition of diesel oil are: gasoline octane rating does not have much variations, be 91～92 (RON), change also little before and after the olefin(e) centent, be 32～36%, diesel oil density rises 0.01, reaches about 0.953 (20 ℃), and this mainly is that heavy aromatics turns to coke in the past in the raw material, green coke amount reduction now turns to light oil constituents, should do the diesel oil blending component.Its imperfect product---coking yield, the present invention has descended 2.8% than KH type; The live catalyst consumption, the present invention descends 50% than KH type, and wherein unit consumption drops to 1Kg/ ton stock oil by 3Kg/ ton stock oil.Thereby the technical program has tangible economic benefit.
Claims (2)
1, a kind of high-efficiency atomising nozzle for catalytic cracking of dead oil, include the steam injector section successively, oil vapour mixing chamber region and oily vapour nozzle (8), the steam injector section mainly is made of steam injector (3), it is characterized in that coaxial package also is provided with premix ring cavity (2) outside steam injector, stock oil oil inlet pipe (1) feeds the premix ring cavity, the steam injector outlet port peripheral hardware of premix ring cavity has porous oil injection annular plate (4), some injection oilholes (5) of porous oil injection annular plate are the jet hole that tilts to axis, are provided with convergence accelerating sections (7) between steam injector section and the oily vapour mixing chamber region.
2, high-efficiency atomising nozzle for catalytic cracking of dead oil according to claim 1, it is characterized in that being serially connected with the stock oil oil inlet pipe is provided with gesture and puts device (9), this gesture is put and is provided with porous rotation target plate (10) in the grand extra heavy pipe chamber of device, removes the rotation wad cutter (11) that its central shaft hole peripheral hardware has some rotation direction unanimities on this porous rotation target plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100113512A CN101307249A (en) | 2007-05-16 | 2007-05-16 | High-efficiency atomising nozzle for catalytic cracking of dead oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100113512A CN101307249A (en) | 2007-05-16 | 2007-05-16 | High-efficiency atomising nozzle for catalytic cracking of dead oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101307249A true CN101307249A (en) | 2008-11-19 |
Family
ID=40123936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100113512A Pending CN101307249A (en) | 2007-05-16 | 2007-05-16 | High-efficiency atomising nozzle for catalytic cracking of dead oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101307249A (en) |
Cited By (3)
| 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 |
| CN112452577A (en) * | 2021-01-22 | 2021-03-09 | 中国科学院过程工程研究所 | Throat type nozzle for jointly strengthening bubble breaking and target type impact |
-
2007
- 2007-05-16 CN CNA2007100113512A patent/CN101307249A/en active Pending
Cited By (4)
| 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 |
| CN112452577A (en) * | 2021-01-22 | 2021-03-09 | 中国科学院过程工程研究所 | Throat type nozzle for jointly strengthening bubble breaking and target type impact |
| CN112452577B (en) * | 2021-01-22 | 2022-04-08 | 中国科学院过程工程研究所 | Throat type nozzle for jointly strengthening bubble breaking and target type impact |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081119 |