CN203295444U - Catalytic cracking reactor - Google Patents
Catalytic cracking reactor Download PDFInfo
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- CN203295444U CN203295444U CN2013202202653U CN201320220265U CN203295444U CN 203295444 U CN203295444 U CN 203295444U CN 2013202202653 U CN2013202202653 U CN 2013202202653U CN 201320220265 U CN201320220265 U CN 201320220265U CN 203295444 U CN203295444 U CN 203295444U
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Abstract
The utility model provides a catalytic cracking reactor. The catalytic cracking reactor comprises a regenerated catalyst conveying pipe (1), a mixer (2), a cyclone separator (6), a raw material oil nozzle (8), a reaction pipe (4) and a reactor outlet (5), wherein the raw material oil nozzle (8) is communicated with the mixer (2) by a spherical end socket (3); the regenerated catalyst conveying pipe (1) is communicated with the mixer (2); the mixer (2) is communicated with the reaction pipe (4); the reactor outlet (5) is communicated with the cyclone separator; the reaction time can be effectively controlled in a range of 0.5s-1.5s so that a secondary reaction of a raw material cracked product is inhibited and the production rate of cracking gas is reduced, and furthermore, the yields of gasoline and diesel fractions are improved.
Description
Technical field
The utility model belongs to the catalytic cracking field of hydrocarbon ils in the non-hydrogen situation, particularly a kind of short reaction time heavy oil catalytic cracking reaction device.
Background technology
At present, there is following problem in the riser fluid catalytic cracking that uses in the petroleum chemical industry catalytic cracking process: promote the tubular type reactor reaction time long, generally in the 4s left and right.The long reaction times has also been aggravated the secondary reaction of raw material cracking resultant when improving the raw material per pass conversion, make the reacted gas gain in yield, thereby has reduced the yield of vapour, diesel oil distillate; In addition, because the oil gas linear speed that promotes in tubular reactor causes the landing of coked catalyst to form back-mixing higher than the catalyzer linear speed, thus, promoting tubular type reactor feedstocks nozzle top, the catalyzer of coking landing contacts with initial stage cracking resultant again with atomized feed, thereby worsened the product distribution, reduced the product selectivity of catalyzer to the raw material cracking.
The related millisecond catalytic cracking technical characterstic of US Patent No. P:5462652 is: in reacting-settler, the mobile direction of catalyzer is downward, and the raw material injection direction of nozzle becomes 90 ° of angles with the mobile direction of catalyzer, and reacting-settler connects cyclonic separator outward.The raw material injection direction of nozzle is over against cyclone inlet.Thereby raw material passes catalyst stream and directly enters in the cyclonic separator that reacting-settler connects the millisecond contact catalysis cracking that realizes raw material and catalyzer outward, reaches the secondary reaction that suppresses the raw material cracking, reduces dry gas, coke yield, improves the purpose that product distributes.But this reaction formation can make reaction oil gas be diffused into the conversion zone of whole reacting-settler, makes reaction oil gas and the catalyzer that does not enter cyclonic separator continue reaction, causes the secondary cracking of reaction oil gas, has reduced millisecond catalytic cracking and has improved the effect that product distributes.
Therefore, adopt the short reaction time catalyst cracker of relative closure to Intensified catalytic cracking raw material and regenerated catalyst short mix and reaction, for reducing dry gas (even comprising liquefied gas) and coke yield, improve catalytic cracking reaction product distribution and product property, reduce plant energy consumption, have important effect.
The utility model content
Can not short mix and long reaction time and the secondary cracking problem of the reaction oil gas that causes in order to solve catalytically cracked material and regenerated catalyst in prior art, a kind of catalyst cracker that the utility model proposes, purpose be solve that catalyzer in short reaction time catalytic cracking engineering mixes with the raw material Quick uniform, the problem of reaction and secondary cracking.
A kind of catalyst cracker, comprise that regenerated catalyst 1, mixing tank 2, dome head 3, cyclonic separator 6, raw material oil spray nozzle 8, reaction tubes 4 and reactor outlet 5 form; Raw material oil spray nozzle 8 is communicated with mixing 2 devices by dome head 3, and regenerated catalyst 1 is communicated with mixing tank 2, and mixing tank 2 is connected with reaction tubes 4, and reactor outlet 5 communicates with cyclonic separator.
Described mixing tank 2 is comprised of conical shell 7 and dome head 3, and dome head 3 is positioned at conical shell 7 bottoms.
Described regenerated catalyst 1 is communicated with the conical shell 7 of mixing tank 2.
Described mixing tank 2 tops are communicated with reaction tubes 4.
Described reactor outlet 5 is communicated with cyclonic separator 6 entrances.
Described mixing tank conical shell 7 and dome head 3 are the metal shell of liner insulated lining.
The cone angle a of described conical shell 7 is 40～120 °, and conical shell base diameter D is 0.1～5m, and conical shell 7 volumes are 0.05～60m
3
Described regenerated catalyst 1 is the metal tube of liner insulated lining, diameter of phi 0.01～3.0m.
Described regenerated catalyst 1 is vertical with reactor mixer conical shell 7 side surfaces, and regenerated catalyst 1 export center is positioned on mixing tank conical shell medullary ray, and outlet is positioned at apart from dome head 3 0.5～2.0m places, bottom.
Described reaction tubes 4 is the metal tube of liner insulated lining, and entrance is positioned at mixing tank conical shell top, and outlet communicates with cyclonic separator 6, diameter of phi 0.1～3.0m, length 1～15m.
Raw material oil spray nozzle 8 on mixing tank dome head 3 bottom centre's lines, is symmetrical arranged a plurality of nozzles around mixing tank dome head 3 bottom centre's lines, raw material oil spray nozzle 8 is 0.2～1.5m. apart from regenerated catalyst 1 outlet height H
Compared with prior art: adopt catalytic cracking unit of the present utility model, have following beneficial effect:
Short reaction time catalyst cracker, the reaction times can effectively be controlled between 0.5～1.5s, thereby suppresses the secondary reaction of raw material cracking resultant, the reacted gas productive rate is reduced, thereby has improved the yield of vapour, diesel oil distillate; The structure of reactor of this short reaction time catalytic cracking is simple, and is easy to operate, is applicable to fcc raw material oil short reaction time catalytic cracking unit.
, for the more detailed the utility model of explaining, below in conjunction with accompanying drawing, a kind of catalyst cracker of the utility model is described in further detail.
Description of drawings
Below in conjunction with accompanying drawing, a kind of catalyst cracker of the utility model is described in further detail.
Fig. 1 is the schematic diagram of the utility model catalyst cracker structure.
Fig. 2 is the utility model catalyst cracker vertical view.
Fig. 3 is the application site schematic diagram of the utility model catalyst cracker in heavy oil short reaction time catalytic cracking unit.
Wherein: 1. regenerated catalyst, 2. mixing tank, 3. dome head, 4. reaction tubes, 5. reaction tubes outlet, 6. cyclonic separator, 7. conical shell, 8. raw material oil spray nozzle, 9. settling vessel, 10. settling vessel stripping stage, 11. inclined tubes to be generated, 12. tubular types are burnt device, 13. revivifiers.
Embodiment
As shown in Figure 1, a kind of catalyst cracker of the utility model, comprise that regenerated catalyst 1, mixing tank 2, cyclonic separator 6, raw material oil spray nozzle 8, reaction tubes 4 and reactor outlet 5 form; Raw material oil spray nozzle 8 is communicated with mixing 2 devices by dome head 3, regenerated catalyst 1 is communicated with the conical shell 7 of mixing tank 2, mixing tank 2 tops are connected with reaction tubes 4, reaction tubes outlet 5 mixing tank 2 that communicates with cyclonic separator 6 is connected with reaction tubes 4, and reactor outlet 5 is communicated with cyclone inlet.
Be the vertical view of a kind of catalyst cracker Fig. 1 of the utility model as Fig. 2, the mixing tank 2 tops situation that is connected with reaction tubes 4 is described.
As shown in Figure 3, a kind of catalytic cracking unit of the utility model, consisting of regenerated catalyst 1, mixing tank 2, cyclonic separator 6, raw material oil spray nozzle 8, reaction tubes 4 and reaction tubes outlet 5; Wherein mixing tank 2 comprises that conical shell 7 and dome head 3 form.Reactor is arranged on settling vessel 9 outsides, reaction tubes outlet 5 is connected with cyclonic separator 6 entrances, cyclonic separator 6 is communicated with settling vessel 9, settling vessel stripping stage 10 burns device 12 by inclined tube 11 to be generated and tubular type and is communicated with, tubular type is burnt device and is communicated with revivifier 13, settling vessel shape end socket 3 at the bottom of reactor Raw oil burner nozzle 8 passes mixing tank enters in reactor mixer 2, regenerated catalyst 1 is connected with mixing tank 2, mixing tank 2 tops are connected with reaction tubes 4, and reaction tubes outlet 5 communicates with cyclonic separator 6.
The utility model can effectively be controlled raw material and catalyzer when different horizontal section lengths the contact reacts time is 0.5～1.5s.
A kind of catalyst cracker of described utility model, the size of mixing tank conical shell 7 is determined can be according to 0.3～0.5 second residence time of stock oil character, atomization water yield raw material oil gas under operational condition, and conical shell bottom oil gas linear speed 1.5～3.0 meter per seconds carry out calculative determination.
A kind of catalyst cracker of described utility model, reactor reaction pipe 4 diameters carry out calculative determination according to oil gas linear speed 5～20 meter per seconds, and length was carried out calculative determination according to 0.2～1.0 second reaction times.
The utility model is simple in structure, and is easy to operate, is easy to realize in full scale plant, is applicable to the device of heavy oil short reaction time catalytic cracking.
The reactor pyramidal structure that described utility model adopts is due to the density variation of mixing tank inner catalyst, thereby having strengthened raw material contacts and evenly mixes, suppresses the secondary reaction of raw material cracking resultant with the quick of regenerated catalyst, the reacted gas productive rate reduced, thereby improved the yield of vapour, diesel oil distillate; This heavy oil short reaction time catalyst cracker is simple in structure, easy to operate, is applicable to the device of heavy oil short reaction time catalytic cracking.
Claims (11)
1. catalyst cracker, comprise regenerated catalyst (1), mixing tank (2), dome head (3), cyclonic separator (6), raw material oil spray nozzle (8), reaction tubes (4) and reactor outlet (5), it is characterized in that: raw material oil spray nozzle (8) is communicated with mixing tank (2) by dome head (3), regenerated catalyst (1) is communicated with mixing tank (2), mixing tank (2) is connected with reaction tubes (4), and reactor outlet (5) communicates with cyclonic separator.
2., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: mixing tank (2) is comprised of conical shell (7) and dome head (3), and dome head (3) is positioned at conical shell (7) bottom.
3., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described regenerated catalyst (1) is communicated with conical shell (7).
4., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described mixing tank (2) top is communicated with reaction tubes (4).
5., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described reactor outlet (5) is communicated with cyclonic separator (6) entrance.
6., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described conical shell (7) and dome head (3) are the metal shell of liner insulated lining.
7., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: the cone angle a of described conical shell (7) is 40～120 °, and conical shell base diameter D is 0.1～5m, and conical shell (7) volume is 0.05～60m
3
8., according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described regenerated catalyst (1) is the metal tube of liner insulated lining, diameter of phi 0.01～3.0m.
9. according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described regenerated catalyst (1) is vertical with reactor mixer conical shell (7) side surface, regenerated catalyst (1) export center is positioned on mixing tank conical shell medullary ray, and outlet is positioned at apart from 0.5～2.0m place, dome head (3) bottom.
10. according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: described reaction tubes (4) is the metal tube of liner insulated lining, reaction tubes (4) entrance is positioned at mixing tank conical shell top, reaction tubes (4) outlet communicates with cyclonic separator (6), diameter of phi 0.1～3.0m, length 1～15m.
11. according to a kind of catalyst cracker claimed in claim 1, it is characterized in that: raw material oil spray nozzle (8) is on mixing tank dome head (3) bottom centre line, be symmetrical arranged a plurality of nozzles around mixing tank dome head (3) bottom centre line, raw material oil spray nozzle (8) is 0.2～1.5m apart from regenerated catalyst (1) outlet height H.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202202653U CN203295444U (en) | 2013-04-19 | 2013-04-19 | Catalytic cracking reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202202653U CN203295444U (en) | 2013-04-19 | 2013-04-19 | Catalytic cracking reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203295444U true CN203295444U (en) | 2013-11-20 |
Family
ID=49571475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202202653U Expired - Lifetime CN203295444U (en) | 2013-04-19 | 2013-04-19 | Catalytic cracking reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203295444U (en) |
-
2013
- 2013-04-19 CN CN2013202202653U patent/CN203295444U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131120 |
|
| CX01 | Expiry of patent term |