CN2356752Y - Catalytic cracking feeding jet nozzle - Google Patents
Catalytic cracking feeding jet nozzle Download PDFInfo
- Publication number
- CN2356752Y CN2356752Y CN 98233035 CN98233035U CN2356752Y CN 2356752 Y CN2356752 Y CN 2356752Y CN 98233035 CN98233035 CN 98233035 CN 98233035 U CN98233035 U CN 98233035U CN 2356752 Y CN2356752 Y CN 2356752Y
- Authority
- CN
- China
- Prior art keywords
- chamber
- catalytic cracking
- atomizing
- oil
- spin
- 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
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Abstract
The utility model relates to a catalytic cracking feeding jet nozzle, which is suitable for heavy oil and residual oil. The better atomization effect of the first atomization of high viscosity oil-bearing materials can be realized by using lower oil pressure and few atomization media (steam). Primarily, a spin chamber is welded between a mixing chamber and an atomizing chamber, a swirler is inserted into the spin chamber, and the centrifugal atomization of the mixture of oil-bearing materials and steam can be carried out through an interior nozzle which is arranged on the spin chamber; the rear part of the atomizing chamber is welded with an accelerating section and a stable section to form a stable two-phase spray flow, and high atomizing quality can be conveniently obtained by the re-atomizing of an external nozzle of a spray head.
Description
The utility model is one and is applicable to heavily (slag) oily catalytic cracking feed nozzle.
At present, what use was wider in the prior art is that target formula nozzle is (by the United States Patent (USP) of Patent Office of the People's Republic of China's announcement, the patent No.: 4434049, approved date: 1984.2.28, title: the resid feed technology of fluid catalytic cracking), be characterized in allowing earlier the high viscosity oil plant under the high pressure effect, make it to pulverize with the high-speed impact metallic target, carry out the atomizing first time of oil plant, with carrying out the atomizing second time in the shower nozzle outlet again after the vapor mixing.The atomizing intensity of target spray nozzle is higher, but needs very high oil pressure (to be generally 1.0～1.4MPa) and more atomizing medium (being high gas/liquid ratio), thereby to have improved production cost and cost of equipment.Another kind of is two venturi formula spray groups, as KH type nozzle (China Patent No.: 89207961.9) and catalytic cracking charging nozzle unit (China Patent No.: 89207964.9), its main feature is to improve steam flow rate and oil/vapour two-phase flow flow velocity as far as possible.Its shortcoming is that effect is limited, and egress line speed is excessive, and the job insecurity phenomenon easily takes place.A kind of in addition at present, be called processing of heavy oil charging nozzle (China Patent No.: 93213297.9), be characterized on interior venturi, setting up the cruciate lobe chip architecture, with broken oil/vapour two-phase annular flow, attenuate oil film.Equally also be that effect is limited, muzzle velocity is excessive.
The purpose of this utility model provides a kind of improved catalytic cracking feed nozzle, realizes that the atomizing first time of high viscosity oil plant only needs to use lower oil pressure and less atomizing medium (steam) just can obtain than the better atomizing effect of target spray nozzle.
The purpose of this utility model is achieved in that promptly: welded a spin chamber between mixing chamber and spray chamber, swirler is embedded in the spin chamber by welding, is welding an accelerating sections and stable section behind spray chamber.Have helicla flute on the swirler, the spiral fluted cross section can be square, rectangle and trapezoidal, 2～8 of numbers, purpose is that preliminary mixed steam and oil plant carry out strong blending in helicla flute, forms the two-phase vortex flow.An interior spout is arranged in the spin chamber, can obtain centrifugal atomizing for the first time by interior spout.By being welded to connect the taper accelerating sections, the convergency of taper accelerating sections is to improve the axial velocity of vapour, liquid two-phase mist flow for＜45 ° of purposes in the spray chamber back.By being welded to connect the tubular stable section, its area is half of spin chamber's area in the back of taper accelerating sections, and stable section can impel and form stable gas, liquid two-phase mist flow.At last, the two-phase mist flow further quickens in the hemispherical shower nozzle, and spout is realized the atomizing second time of oil plant with fan-shaped ejection outside flat flute profile.
The utility model allows to remove interior spout, allows stream-liquid two-phase flow directly spray into riser through the dome-type shower nozzle.
The utility model compared with prior art has following useful effect:
1. atomizing particle is thin, and particle size distribution is even, and the atomizing medium consumption is few.
2. operating flexibility is good.Steam and oil plant enter the helicla flute of swirler together, because oil plant density is much larger than steam, when the oil plant flow increased and decreased to some extent, the volume flow of two phase flow changed less relatively, can obviously not worsen atomization quality.
3. functional reliability height.Oil plant by swirler and spin chamber, because helicla flute cross section and interior nozzle exit are all bigger, so be difficult for coking takes place, stops up the accident of a class with steam.
4. economy is simple in structure, and is easy to use, is easy to promote.Because atomizing does not need very high oil pressure and more atomizing medium (being high vapour, liquor ratio), thereby has reduced the improvement expenses of production cost and equipment.
Below in conjunction with accompanying drawing concrete structure of the present utility model is further described.
Among the figure: 1-steam inlet pipe 2-oil plant inlet tube
3-mixing chamber 4-swirler
Spout in the 6-of 5-spin chamber
7-spray chamber 8-accelerating sections
9-stable section 10-shower nozzle
The outer spout 12-helicla flute of 11-
Fig. 1 is the general structure schematic diagram of utility model:
On mixing chamber (3), welding steam inlet pipe (1) and oil plant inlet tube (2).Welding a spin chamber (5) between mixing chamber (3) and the spray chamber (7), an interior spout (6) is being arranged on spin chamber (5).Swirler (4) is embedded in lining, spin chamber (5) by welding, and helicla flute (12) is arranged on the cyclone (4), and number is 2～8, and the cross section is a square rectangle or trapezoidal.Welding accelerating sections 8 in the back of spray chamber 7, be shaped as taper, convergency is welding stable section (9) for＜45 ° in accelerating sections (8) back, be shaped as tubular, area is half of spin chamber (5) area, stable section (9) and shower nozzle (10) welding have spout (11) outside the flat flute profile on shower nozzle (10).
Swirler of the present utility model, the spin chamber, accelerating sections, stable section is made by the metal material carbon steel.
During operation, steam and oil plant are entered swirler (4) respectively together after steam inlet pipe (1) and oil plant inlet tube (2) input mixing chamber (3) tentatively mix helicla flute (12) splits blending by force and forms the two-phase eddy current and also carry out the centrifugal atomizing first time by interior spout (6), form the vapour that has certain tangential velocity in spray chamber (7) lining, liquid two-phase atomized flow, enter taper accelerating sections (8) then and improve its axial velocity, stable section (9) can impel and form stable vapour, liquid two-phase mist flow, last two-phase atomized flow is further quickened in hemispheric shower nozzle (10), spout outside flat flute profile (11) is realized the atomizing second time of oil plant with fan-shaped ejection.
Claims (5)
1. catalytic cracking feed nozzle, comprise steam inlet pipe (1), oil plant inlet tube (2), mixing chamber (3), spray chamber (7), shower nozzle (10) and outer spout (11), it is characterized in that between mixing chamber (3) and spray chamber (7), welding spin chamber (5), swirler (4) is embedded in lining, spin chamber (5) by welding, is welding accelerating sections (8) and stable section (9) behind spray chamber (7).
2. catalytic cracking feed nozzle according to claim 1 is characterized in that helicla flute (12) is arranged on the swirler (4), and the number of helicla flute (12) is 2～8, and the cross section is square, rectangle or trapezoidal.
3. catalytic cracking feed nozzle according to claim 1 is characterized in that an interior spout (6) is arranged in the spin chamber (5).
4. catalytic cracking feed nozzle according to claim 1 is characterized in that accelerating sections (8) for taper, convergency＜45 °.
5. catalytic cracking feed nozzle according to claim 1 is characterized in that stable section (9) is a tubular, and area is half of spin chamber (5) area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233035 CN2356752Y (en) | 1998-09-25 | 1998-09-25 | Catalytic cracking feeding jet nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233035 CN2356752Y (en) | 1998-09-25 | 1998-09-25 | Catalytic cracking feeding jet nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2356752Y true CN2356752Y (en) | 2000-01-05 |
Family
ID=33981850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98233035 Expired - Lifetime CN2356752Y (en) | 1998-09-25 | 1998-09-25 | Catalytic cracking feeding jet nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2356752Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727076B (en) * | 2004-07-29 | 2011-01-19 | 欧思股份有限公司 | Injection nozzle structure and oil separator using the same |
| CN103007724A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Swirl type denitration ejector of circulating fluidized bed |
| CN103666522A (en) * | 2013-11-07 | 2014-03-26 | 中国石油大学(北京) | Feeding nozzle of catalytic cracking unit |
| CN107138306A (en) * | 2017-07-10 | 2017-09-08 | 沈晓兰 | 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 |
| CN107486351A (en) * | 2017-09-18 | 2017-12-19 | 华中科技大学 | A kind of eddy flow mercury absorbent injection apparatus |
| CN110449283A (en) * | 2019-09-12 | 2019-11-15 | 河北工业大学 | A kind of novel atomized nozzle based on bubble cutting |
| CN112358894A (en) * | 2020-11-07 | 2021-02-12 | 新能能源有限公司 | Coal gasification catalyst loading device |
-
1998
- 1998-09-25 CN CN 98233035 patent/CN2356752Y/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1727076B (en) * | 2004-07-29 | 2011-01-19 | 欧思股份有限公司 | Injection nozzle structure and oil separator using the same |
| CN103007724A (en) * | 2012-12-08 | 2013-04-03 | 中国航天科技集团公司第六研究院第十一研究所 | Swirl type denitration ejector of circulating fluidized bed |
| CN103666522A (en) * | 2013-11-07 | 2014-03-26 | 中国石油大学(北京) | Feeding nozzle of catalytic cracking unit |
| CN103666522B (en) * | 2013-11-07 | 2016-05-18 | 中国石油大学(北京) | Catalytic cracking unit feed 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 |
| CN107486351A (en) * | 2017-09-18 | 2017-12-19 | 华中科技大学 | A kind of eddy flow mercury absorbent injection apparatus |
| CN107486351B (en) * | 2017-09-18 | 2022-10-14 | 华中科技大学 | Rotational flow mercury adsorbent injection device |
| CN110449283A (en) * | 2019-09-12 | 2019-11-15 | 河北工业大学 | A kind of novel atomized nozzle based on bubble cutting |
| CN112358894A (en) * | 2020-11-07 | 2021-02-12 | 新能能源有限公司 | Coal gasification catalyst loading device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |