CN103965949B - A kind of feed process of catalyst cracker and device - Google Patents
A kind of feed process of catalyst cracker and device Download PDFInfo
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- CN103965949B CN103965949B CN201310036090.5A CN201310036090A CN103965949B CN 103965949 B CN103965949 B CN 103965949B CN 201310036090 A CN201310036090 A CN 201310036090A CN 103965949 B CN103965949 B CN 103965949B
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Abstract
The feed process of catalyst cracker and a device, belong to cracking of oil technical field.Raw material pass tubes connects ring pipe, and the other end of ring pipe connects nozzle, and ring pipe is that 4 tunnels connect raw material pass tubes respectively; Atomizing steam pass tubes connects atomizing steam ring pipe; Atomizing steam ring pipe connects atomizing steam pipeline, and atomizing steam pipeline connects the vapor interface of nozzle; The center of atomizing steam ring pipe and ring pipe is riser tube; Atomizing steam ring pipe is connected with frame by supporting, and ring pipe is connected with frame by supporting.Advantage of the present invention is: catalyst cracker riser tube nozzle material-feeding changes annular charging into by sectional feeding, before nozzle, each feeding line internal pressure is fallen almost impartial, feed rate is substantially identical, eliminate the Biased flow phenomenon of each nozzle material, decrease the coking in device riser tube, product slates is optimized.
Description
Technical field
The present invention relates to a kind of feed process and device of catalyst cracker, belong to cracking of oil technical field.
Background technology
At present, the raw material sources of catalyst cracker are relatively more extensive, and in general feedstock property is all poor, and the feeding manner of raw material has direct impact to catalytic cracking effect.The atomizing raw materials effect that good feeding manner can produce, is beneficial to fully contacting of catalyzer and raw material, and then affects good and bad degree and the product slates situation of catalytic cracking reaction.
China Patent Publication No. is: CN1340595; Provide " a kind of feeding method for catalytic cracking of hydrocarbon oil ", finish sparger is set above the regenerated catalyst inlet of riser reactor inside, the lower middle portion of riser reactor is divided into and is parallel to 2 ~ 4 axial reaction zones, and corresponding hydrocarbon raw material nozzle is set in each reaction zone; High temperature regeneration agent from revivifier is uniformly distributed in each reaction zone; Hydrocarbon raw material of different nature injects different reaction zones respectively, contacts and react with high temperature regeneration agent; Reacted logistics is up along riser tube in respective reaction zone, and after leaving finish sparger, each logistics is continuing mutually to mix in the process up along riser tube; Reaction product isolated, spent agent returns riser reactor and recycles after stripping, regeneration.The method is adopted to contribute to improving product slates and the product property of catalytic cracking.
China Patent Publication No. is: CN1388212, provides " a kind of oil solution mixing chamber for catalytic cracking riser reactor ", comprises with lower member: pre-lift pipe, interior transfer lime, outer transfer lime, lifting dielectric distribution device, hydrocarbon oil distribution device; Wherein, pre-lift pipe and interior transfer lime are coaxially arranged from bottom to up, are round table-like transition section between the two, and along the circumferential direction uniform pore openings of this round platform; Outer transfer lime is positioned at the outside of transfer lime, and coaxial with interior transfer lime, and they form annular cavity between the two; Be connected with riser tube after the top undergauge of outer transfer lime, and be connected with the round table-like transition section between pre-lift pipe and interior transfer lime after the undergauge of its underpart; Promote the bottom of annular cavity that dielectric distribution device is arranged at interior transfer lime, pre-lift pipe respectively and is formed by inside and outside transfer lime; Hydrocarbon oil distribution device and be arranged at bottom and the top of outer transfer lime respectively.
Be entitled as " a kind of feeding method for catalytic cracking of hydrocarbon oil " (patent No.: 00122842.0; Publication date: 2002-3-20) in domestic petroleum petrochemical industry patent, provide a kind of feed process of catalytic cracking of hydrocarbon oil, that finish sparger is set above the regenerant inlet of riser tube inside, the lower middle portion of riser tube is divided into and is parallel to 2 ~ 4 axial reaction zones, in each reaction zone, corresponding hydrocarbon oil feed nozzle is set, make hydrocarbon ils of different nature inject different reaction zones respectively, contact with high temperature regeneration agent and react; Reacted logistics is up along riser tube, converges after leaving finish sparger; Reaction product isolated, spent agent uses through stripping, regeneration Posterior circle.
Existing sectional feeding mode: consult Fig. 1.
Raw material is first divided into two-way, and then every road raw material is further divided into two-way, causes riser tube nozzle system.Meanwhile, atomizing steam is first divided into two-way, and then every road is further divided into two-way, causes after riser tube nozzle system mixes with raw material and sprays.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of feed process and device of catalyst cracker, can prevent from producing bias current between each road nozzle of riser tube, thus the raw material of Shi Ge road nozzle obtains balanced atomizing effect.
A feeding unit for catalyst cracker, raw material pass tubes connects ring pipe, and the other end of ring pipe connects nozzle, and ring pipe is that 4 tunnels connect raw material pass tubes respectively;
Atomizing steam pass tubes connects atomizing steam ring pipe; Atomizing steam ring pipe connects atomizing steam pipeline, and atomizing steam pipeline connects the vapor interface of nozzle;
The center of atomizing steam ring pipe and ring pipe is riser tube; Atomizing steam ring pipe is connected with frame by supporting, and ring pipe is connected with frame by supporting.
A feed process for catalyst cracker, containing following steps;
Charging comprises raw material and steam, steam and raw material are introduced into ring pipe, then draw from ring pipe and enter nozzle ejection, steam utilizes the surging force of steam and the special construction of nozzle self in nozzle, atomizing raw materials is become tiny particle, and then raw material and catalyzer fully contact and carry out catalytic cracking reaction;
Ring pipe is drawn 4 road nozzles, the flow of charging and the Pressure Drop of pipeline substantially impartial, the flow of the atomizing steam of 4 road nozzles is substantially identical, and the Pressure Drop of pipeline is also substantially identical, and the atomizing effect of 4 road nozzle Raws is basically identical; Avoid Biased flow phenomenon, be conducive to each road raw material and obtain the impartial chance fully contacted with catalyzer, thus make raw material reach good catalytic cracking effect.
Advantage of the present invention is: the feeding manner of catalyst cracker, and catalyst cracker riser tube nozzle material-feeding changes annular charging into by sectional feeding; Catalyst cracker raw material installs ring pipe additional before entering riser tube nozzle; Catalyst cracker atomizing steam installs ring pipe additional before entering riser tube nozzle.
After catalyticreactor riser tube nozzle system adopts annular feeding manner, before nozzle, each feeding line internal pressure is fallen almost impartial, feed rate is substantially identical, eliminate the Biased flow phenomenon of each nozzle material, decrease the coking in device riser tube, product slates is optimized: yield of gasoline increases by 0.4 percentage point, diesel yield increases by 0.6 percentage point, liquid hydrocarbon declines 0.4 percentage point, coke yield declines 0.5 percentage point, dry gas yield declines 0.3 percentage point, and total liquid yield rises 0.6 percentage point.
Accompanying drawing explanation
When considered in conjunction with the accompanying drawings, by referring to detailed description below, more completely can understand the present invention better and easily learn wherein many adjoint advantages, but accompanying drawing described herein is used to provide a further understanding of the present invention, form a part of the present invention, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention, as schemed wherein:
Fig. 1 is existing sectional feeding mode schematic diagram.
Fig. 2 is structural representation of the present invention.
Solid line represents the flow process of raw material, the flow process of represented by dotted arrows atomizing steam, and the dotted line wherein in the middle of riser tube represents the part be blocked, and the 4 road arrows be connected on riser tube represent 4 tunnel chargings.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
Obviously, the many modifications and variations that those skilled in the art do based on aim of the present invention belong to protection scope of the present invention.
Embodiment 1: as shown in Figure 2, a feeding unit for catalyst cracker, solid line is raw material pass tubes 2, and dotted line is atomizing steam pass tubes 3, dotted line wherein in the middle of riser tube 1 represents the part be blocked, and the 4 road line arrows be connected on riser tube 1 indicate 4 road feed pipes.
Raw material pass tubes 2 connects ring pipe 4, and the other end of ring pipe 4 connects nozzle 6, and ring pipe 4 is that 4 tunnels connect raw material pass tubes 2 respectively;
Atomizing steam pass tubes 3 connects atomizing steam ring pipe 7; Atomizing steam ring pipe 7 connects atomizing steam pipeline, and atomizing steam pipeline connects the vapor interface of nozzle;
The center of atomizing steam ring pipe 7 and ring pipe 4 is riser tube 1.
Atomizing steam pipeline is more than 2.
There is provided a kind of feeding manner of catalyst cracker, solve the Biased flow phenomenon of each road charging, the line pressure balancing each road nozzle falls, and Shi Ge road nozzle material-feeding is even, reduces coking in riser tube, and optimizing product distributes.
The charging of catalytic cracking unit riser tube tuyere arrangement comprises raw material and steam.Steam utilizes the surging force of steam and the special construction of nozzle self in nozzle, and atomizing raw materials is become tiny particle, and then raw material and catalyzer fully contact and carry out catalytic cracking reaction;
The feeding manner of nozzle system charging is changed, namely changes annular feeding manner into by original segmented mode charging.
Make the Pressure Drop of the flow of 4 road nozzle material-feedings and pipeline substantially impartial like this, avoid Biased flow phenomenon, be conducive to each road raw material and obtain the impartial chance fully contacted with catalyzer, thus make raw material reach good catalytic cracking effect.
Atomizing steam flow process installs ring pipe additional, and namely atomizing steam is introduced into ring pipe, then enters nozzle system from ring pipe extraction and mixes with raw material.Make the flow of the atomizing steam of 4 road nozzles substantially identical like this, the Pressure Drop of pipeline is also substantially identical, and the atomizing effect of 4 road nozzle Raws is basically identical.
Carry feed system nozzle material-feeding and change annular charging into by original sectional feeding.
Technical characteristic of the present invention is as follows:
The riser tube nozzle material-feeding of catalyst cracker changes annular charging into by sectional feeding;
Ring pipe is installed additional before the raw material of catalyst cracker enters riser tube nozzle;
Ring pipe is installed additional before the atomizing steam of catalyst cracker enters riser tube nozzle.
As mentioned above, embodiments of the invention are explained, but as long as do not depart from inventive point of the present invention in fact and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation is also all included within protection scope of the present invention.
Claims (1)
1. a feeding unit for catalyst cracker, it is characterized in that raw material pass tubes connects ring pipe, the other end of ring pipe connects 4 road nozzles, and ring pipe is that 4 tunnels connect raw material pass tubes respectively; Atomizing steam pass tubes connects atomizing steam ring pipe; Atomizing steam ring pipe connects atomizing steam pipeline, and atomizing steam pipeline connects the vapor interface of nozzle; The center of atomizing steam ring pipe and ring pipe is riser tube; Atomizing steam ring pipe is connected with frame by supporting, and ring pipe is connected with frame by supporting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310036090.5A CN103965949B (en) | 2013-01-30 | 2013-01-30 | A kind of feed process of catalyst cracker and device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310036090.5A CN103965949B (en) | 2013-01-30 | 2013-01-30 | A kind of feed process of catalyst cracker and device |
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| Publication Number | Publication Date |
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| CN103965949A CN103965949A (en) | 2014-08-06 |
| CN103965949B true CN103965949B (en) | 2016-01-20 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322384A (en) * | 1977-04-01 | 1982-03-30 | The British Petroleum Company Limited | Sparger nozzles |
| CN102120165A (en) * | 2010-11-19 | 2011-07-13 | 洛阳森德石化工程有限公司 | Catalytic cracking lifting pipe feeding and mixing section structure for inhibiting catalyst backmixing |
| CN201900006U (en) * | 2010-11-19 | 2011-07-20 | 洛阳森德石化工程有限公司 | Feed mixing section structure of catalytic cracking riser |
| CN203174048U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Feeding device of catalytic cracking reactor |
| CN103834430A (en) * | 2013-01-23 | 2014-06-04 | 洛阳瑞泽石化工程有限公司 | Design method of feed nozzle of catalytic cracking device |
-
2013
- 2013-01-30 CN CN201310036090.5A patent/CN103965949B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322384A (en) * | 1977-04-01 | 1982-03-30 | The British Petroleum Company Limited | Sparger nozzles |
| CN102120165A (en) * | 2010-11-19 | 2011-07-13 | 洛阳森德石化工程有限公司 | Catalytic cracking lifting pipe feeding and mixing section structure for inhibiting catalyst backmixing |
| CN201900006U (en) * | 2010-11-19 | 2011-07-20 | 洛阳森德石化工程有限公司 | Feed mixing section structure of catalytic cracking riser |
| CN103834430A (en) * | 2013-01-23 | 2014-06-04 | 洛阳瑞泽石化工程有限公司 | Design method of feed nozzle of catalytic cracking device |
| CN203174048U (en) * | 2013-01-30 | 2013-09-04 | 中国石油天然气股份有限公司 | Feeding device of catalytic cracking reactor |
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| CN103965949A (en) | 2014-08-06 |
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