CN203295443U - Catalytic cracking reactor with short reaction time - Google Patents
Catalytic cracking reactor with short reaction time Download PDFInfo
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- CN203295443U CN203295443U CN2013201987685U CN201320198768U CN203295443U CN 203295443 U CN203295443 U CN 203295443U CN 2013201987685 U CN2013201987685 U CN 2013201987685U CN 201320198768 U CN201320198768 U CN 201320198768U CN 203295443 U CN203295443 U CN 203295443U
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Abstract
The utility model discloses a catalytic cracking reactor with short reaction time, which solves the problem of uniform mixing of raw oil and a regeneration catalyst and secondary cracking of a reaction process in catalytic cracking engineering with the short reaction time in the prior art. The technical scheme is as follows: the catalytic cracking reactor with the short reaction time comprises a first reactor section, a tapered pipe section, a second reactor section and a connection pipe which are arranged sequentially along the same axis; a regeneration catalyst conveying pipe and a nozzle are arranged on the first reactor section; a cyclone separator is connected with the second reactor section by the connection pipe; a turbulent flow member is arranged on the pipe inner wall of the tapered pipe section. With the adoption of the catalytic cracking reactor with the short reaction time disclosed by the utility model, the reaction time of raw materials can be controlled within 0.3s-1.5s, and a secondary reaction of a raw material cracked product is inhibited, so that production distribution and production properties of a catalytic cracking reaction are improved and the energy consumption of the device is reduced.
Description
Technical field
The invention belongs to petrochemical industry, relate to a kind of heavy oil catalytic cracking reaction device on catalytic cracking unit.
Background technology
At present, in petrochemical industry, the conventional catalyst cracking case is to adopt the riser tube reaction formation.Exist atomized feed with high temperature catalyst, can not fully mix and carry out contact reacts in reactor, the oil gas linear speed that promotes in tubular reactor causes the landing of coked catalyst higher than the catalyzer linear speed and forms back-mixing.Long reaction time (generally in the 4s left and right) the long reaction times that promotes tubular reactor all affects very large on product distribution, product property; For this reason, the descending tubular reactor of gas-solid has appearred the nineties in 20th century.Its characteristics be agent oil in the same way, agent oil than uniform contact, mix rapidly, the reaction times is short.Catalyzer moves downward along gravity field, can not produce the catalyzer landing and the air-teturning mixed phenomenon that depart from desirable plug flow that are similar in riser reactor.Can under the high temperature short contact time conditions, produce stop bracket gasoline, reduce simultaneously the productive rate of dry gas and coke.
US Patent No. P5462652 discloses a kind of short reaction time catalytic cracking unit, related millisecond catalytic cracking technical characterstic is: in reacting-settler, the mobile direction of catalyzer is downward, 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.
The utility model content
The purpose of this utility model is to provide a kind of short reaction time catalyst cracker, with even the mixing and the secondary cracking problem of reaction process that solves prior art short reaction time catalytic cracking engineering Raw oil and regenerated catalyst.Use the utility model, the raw material reaction time can be controlled between 0.3～1.5 second, and can suppress the secondary reaction of raw material cracking resultant, improve product distribution and product property and the reduction plant energy consumption of catalytic cracking reaction.
The utility model provides a kind of short reaction time catalyst cracker, it is characterized in that: this catalyst cracker comprises two sections of one section of reactor, Taper Pipe section, reactors and the pipe connecting that sets gradually along same axis, pipe connecting further is connected with cyclone separator, catalyst transport and nozzle are arranged on one section of reactor, and the Taper Pipe inner tubal wall of Taper Pipe section is provided with the flow-disturbing member.
The further technical characterictic of the utility model is: one section diameter D1 of described reactor is Φ 500～2000mm, and length L 1 is 3～6m.
The further technical characterictic of the utility model is: two sections diameter D2 of described reactor are Φ 500～2000mm, and length L 2 is 3～6m.
The further technical characterictic of the utility model is: described jet exit position is at one section of the reactor intersection point place with the catalyst transport center line of suction.
The further technical characterictic of the utility model is: described Taper Pipe segment length L3 is 0.5～2m, and tapering β is 0～20 °.
The further technical characterictic of the utility model is: the flow-disturbing member number that arranges in described Taper Pipe section is 2～16, is evenly distributed on Taper Pipe section tube wall inboard.
The further technical characterictic of the utility model is: described flow-disturbing member is the trilateral solid conical, and it is of a size of: long La 0.5～2m, wide Lb are 30～200mm, and high H is 30～200mm's.
The further technical characterictic of the utility model is: two sections of one section of described reactor and reactors are the metal circular tube of liner insulating and wearing-resistant lining.
The further technical characterictic of the utility model is: described Taper Pipe section and flow-disturbing member are the wear resistant corrosion resistant metalwork.
The further technical characterictic of the utility model is: the axial angle that described catalyst transport and reactor are a section is α, 0<α<180 °, the axial angle that cyclone separator and reactor are two sections is γ, 0<γ<180 °, flow-disturbing member and horizontal direction angle are the δ direction, 0<δ<90 °.
In the utility model, regenerated catalyst from catalyst transport together enters one section of reactor with the raw material that enters through reactor nozzle, and then enter reactor Taper Pipe section, in Taper Pipe, arrange under the effect of flow-disturbing member change in reactor axially and radial density poor, raw material and catalyst mix after making to vaporize are more even, react more abundant, reactor outlet is connected by pipe connecting with the cyclone separator in settling vessel, and reactant flow is separated.Reactor diameter carries out calculative determination according to oil gas linear speed 5～20 meter per seconds, and the Taper Pipe section is calculated the rate mean diameter of taking an examination.Total reactor length was carried out calculative determination according to 0.3～1.5 second reaction times.Use the utility model to suppress the secondary reaction of raw material cracking resultant.This structure of reactor is simple, is applicable to short reaction time catalytic cracking unit.
The beneficial effect that the utility model compared with prior art has is: the catalyst cracker that the utility model provides, raw material and the direct contact reacts of regenerated catalyst via nozzle atomization, reactant flow enters the Taper Pipe section, in Taper Pipe, establishing the flow-disturbing member has not only increased the reactant flow linear speed but also improve axial and radial density distribution, reduces the phenomenon that landing and back-mixing etc. depart from desirable plug flow.The raw material reaction time can be controlled between 0.3～1.5s, thereby the secondary reaction that suppresses raw material cracking resultant, improve the product distribution of catalytic cracking reaction and product property, reduction plant energy consumption, this catalyst cracker is simple in structure, is applicable to short reaction time catalytic cracking unit.
Below in conjunction with the drawings and specific embodiments, a kind of short reaction of the utility model time catalyst cracker is described in further detail, but does not limit scope of the present utility model.
The accompanying drawing explanation
Fig. 1 is the application site schematic diagram of catalyst cracker of a kind of short reaction time of the utility model at heavy oil catalytically cracking equipment.
Fig. 2 is the schematic diagram of structure of reactor.
Fig. 3 is the schematic diagram of Taper Pipe section A-A cross section in Fig. 2.
Fig. 4 is flow-disturbing member three-dimensional structure diagram.
Fig. 5 is the left view of flow-disturbing member shown in Figure 4.
Reference numeral shown in figure is:
One section of 1-reactor, 2-nozzle, two sections of 3-reactors, 4-Taper Pipe section, 5-cyclone separator, 6-catalyst transport, 7-pipe connecting, 8-flow-disturbing member.
As Figure 1-Figure 2, catalyst cracker of a kind of short reaction time of the utility model, comprise two section 2 of one section 1 of reactor, Taper Pipe section 4, the reactor and the pipe connecting 7 that along same axis, set gradually, pipe connecting 7 further is connected with cyclone separator 5, catalyst transport 6 and nozzle 3 are arranged on a section 1 of reactor, and the Taper Pipe inner tubal wall of Taper Pipe section 4 is provided with flow-disturbing member 8.
One section diameter D1 of described reactor is Φ 500～2000mm, and length L 1 is 3～6m; Two sections diameter D2 of reactor are Φ 500～2000mm, and length L 2 is 3～6m; Described jet exit position is at one section of the reactor intersection point place with the catalyst transport center line of suction.
Described Taper Pipe segment length L3 is 0.5～2m, and tapering β is 0～20 °; The flow-disturbing member number that arranges in described Taper Pipe section is 2～16, is evenly distributed on Taper Pipe section tube wall inboard, as shown in Figure 3.
As shown in Figure 4 and Figure 5, described flow-disturbing member is of a size of: long La is 0.5～2m, and wide Lb is 30～200mm, and high H is 30～200mm, and flow-disturbing member 8 is the trilateral solid conical.
One section 1 of described reactor and reactor can be the metal circular tube of liner insulating and wearing-resistant lining for two section 2.
Described Taper Pipe section 4 and flow-disturbing member 8 are the wear resistant corrosion resistant metalwork.
The axial angle that described catalyst transport 6 and reactor are one section 1 is α, 0<α<180 °, and the axial angle that cyclone separator 5 and reactor are two section 4 is γ, 0<γ<180 °, flow-disturbing member 8 is the δ direction with the horizontal direction angle, 0<δ<90 °.
workflow of the present utility model is: regenerated catalyst and the atomized feed that enters through reactor nozzle 3 from catalyst transport 6 together enter a section 1 of reactor, and then enter reactor Taper Pipe section 4, in Taper Pipe, arrange under the effect of flow-disturbing member 8 change in reactor axially and radial density poor, raw material and catalyst mix after making to vaporize are more even, react more abundant, from Taper Pipe section 4 logistics out, entering reactor reacts for two section 3 again, through reactor outlet, enter by the cyclone separator in two section 3 settling vessel that is connected of pipe connecting 7 and reactor afterwards, settling vessel is by inclined tube to be generated, the connected revivifier of regeneration coke-burning riser, revivifier regenerator transfer lime 6 is connected for one section 1 with reactor.
Thereby described reactor can change the reactant flow linear speed and changed axially and the warp-wise density distribution by in the Taper Pipe section, establishing the flow-disturbing member, catalyzer is contacted more even with oil gas.Can make in reactor mixing of materials more even, suppress the secondary reaction of raw material cracking resultant, improve the product distribution of catalytic cracking reaction and product property, reduction plant energy consumption.This catalyst cracker is simple in structure, is applicable to the application of short reaction time heavy oil fluid catalytic cracking engineering.
Claims (10)
1. short reaction time catalyst cracker, it is characterized in that: this catalyst cracker comprises reactor one section (1), Taper Pipe section (4), reactor two sections (2) and the pipe connectings (7) that set gradually along same axis, pipe connecting (7) further is connected with cyclone separator (5), catalyst transport (6) and nozzle (3) are arranged on one section of reactor (1), and the Taper Pipe inner tubal wall of Taper Pipe section (4) is provided with flow-disturbing member (8).
2. a kind of short reaction time catalyst cracker according to claim 1, it is characterized in that: one section (1) diameter D1 of described reactor is Φ 500～2000mm, and length L 1 is 3～6m.
3. a kind of short reaction time catalyst cracker according to claim 1, it is characterized in that: two sections (2) diameter D2 of described reactor are Φ 500～2000mm, and length L 2 is 3～6m.
4. a kind of short reaction time catalyst cracker according to claim 1 is characterized in that: described nozzle (3) outlet position is at the intersection point place of reactor one section (1) with catalyst transport (6) center line of suction.
5. a kind of short reaction time catalyst cracker according to claim 1, it is characterized in that: described Taper Pipe section (4) length L 3 is 0.5～2m, and tapering β is 0～20 °.
6. a kind of short reaction time catalyst cracker according to claim 1 is characterized in that: flow-disturbing member (8) number that arranges in described Taper Pipe section (4) is 2～16, is evenly distributed on Taper Pipe section (4) tube wall inboard.
7. according to claim 1 or 6 described a kind of short reaction time catalyst crackers, it is characterized in that: the size of described flow-disturbing member (8) is that long La is 0.5～2m, and wide Lb is 30～200mm, and high H is the trilateral solid conical of 30～200mm.
8. a kind of short reaction time catalyst cracker according to claim 1 is characterized in that: described reactor one section (1) and reactor two sections (2) are the metal circular tube of liner insulating and wearing-resistant lining.
9. a kind of short reaction time catalyst cracker according to claim 1, it is characterized in that: described Taper Pipe section (4) and flow-disturbing member (8) are the wear resistant corrosion resistant metalwork.
10. a kind of short reaction time catalyst cracker according to claim 1, it is characterized in that: described catalyst transport (6) is α with the axial angle of reactor one section (1), 0<α<180 °, cyclone separator (5) is γ with the axial angle of reactor two sections (4), 0<γ<180 °, flow-disturbing member (8) is δ with the horizontal direction angle, 0<δ<90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201987685U CN203295443U (en) | 2013-04-15 | 2013-04-15 | Catalytic cracking reactor with short reaction time |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013201987685U CN203295443U (en) | 2013-04-15 | 2013-04-15 | Catalytic cracking reactor with short reaction time |
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| CN203295443U true CN203295443U (en) | 2013-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681343A (en) * | 2019-10-15 | 2020-01-14 | 广东省新材料研究所 | Continuous reactor |
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2013
- 2013-04-15 CN CN2013201987685U patent/CN203295443U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110681343A (en) * | 2019-10-15 | 2020-01-14 | 广东省新材料研究所 | Continuous reactor |
| CN110681343B (en) * | 2019-10-15 | 2024-02-02 | 广东省科学院新材料研究所 | Continuous reactor |
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Granted publication date: 20131120 |