Reaction separation device and reaction separation system

By designing a reaction separation device containing a closed cover and a cyclone separator in catalytic cracking or catalytic cracking reaction, combined with the separation system of the outer reactor, the problem of reaction oil and gas coking in the settlement shell is solved, and the structure is simple and convenient to operate is achieved. efficient separation effect.

CN119220291APending Publication Date: 2024-12-31SINOPEC ENGINEERING INCORPORATION +1
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Patent Information

Application Number
CN202310802764.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-06-30
Publication Date
2024-12-31

AI Technical Summary

Technical Problem

In catalytic cracking or catalytic cracking reactions, the reaction oil and gas stay in the settlement shell for too long, resulting in coking, causing economic losses and affecting the safe operation of the device. The existing anti-coking technology has complex structure, difficult design and construction, and complex operation.

Method used

A reaction separation device is designed, including a closed cover and a cyclone separator in the settlement housing, and at least two reactors on the outside, each reactor is equipped with a reaction tube and a separator to transfer the reaction oil and gas and catalyst through the connecting tube. Separate and transport it into a closed cover for secondary separation to prevent oil and gas from accumulating in the settler housing.

Benefits of technology

Effective sealing of reaction oil and gas in catalytic cracking or catalytic cracking reactions is achieved, coking in the settlement case is inhibited, catalyst separation efficiency is improved, device structure is simplified, and construction and operation difficulty is reduced.

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Abstract

The invention relates to a reaction separation device and a reaction separation system, the reaction separation device comprises a settler and at least two reactors, a settler shell is provided with a first oil gas outlet and a first catalyst outlet, the upper end of a sealing cover is hermetically communicated with an oil gas inlet of a cyclone separator, and the lower end of the sealing cover is open; the at least two reactors are arranged on the outer side of the settler shell, each reactor comprises a reactor shell, a reaction pipe, a separator, a first connecting pipe and a second connecting pipe, one end of the reaction pipe is provided with a material inlet, the other end of the reaction pipe extends into the reactor shell and is provided with a material outlet, the inlet of the separator is communicated with the material outlet, and the second connecting pipe is communicated with the separator. One end of the first connecting pipe is communicated with the second oil gas outlet, the other end of the first connecting pipe penetrates through the settler shell and extends into the sealing cover, one end of the second connecting pipe is communicated with the second catalyst outlet, and the other end of the second connecting pipe extends into the settler shell.
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Description

Technical Field

[0001] The present disclosure relates to the technical field of petroleum refining and coal-to-oil, and in particular, to a reaction separation device and a reaction separation system. Background Art

[0002] In catalytic cracking or catalytic cracking reactions, the reaction oil and gas stay in the settler shell for too long, and the coking precursors and heavy components in the oil and gas aggregate to form coke that adheres to the settler shell and internal components, resulting in coking of the settler. Coking of the settler often causes economic losses to the device and is also an unfavorable factor affecting the long-term safe operation of heavy oil catalytic cracking and catalytic cracking devices.

[0003] In the existing anti-coking technology, a closed structure for rapid separation and rapid export at the outlet of the riser is usually used to prevent the oil and gas from coking in the settler shell. Among them, in the catalytic cracking or catalytic cracking device using selective cracking, two risers are usually set up with different feed and operating conditions, that is, a double reaction form of inner riser + outer riser is adopted. For example, the inner riser adopts a swirl head for rapid separation, a closed cover is arranged outside the inner riser, and the outer riser goes deep into the settler shell and the closed cover of the inner riser in turn. The outlet adopts a coarse cyclone separator for rapid separation, and the coarse cyclone separator is arranged in the closed cover, and the closed cover outlet is directly connected to the cyclone separator at the top. Although this setting method can effectively and quickly export the reaction oil and gas of the inner and outer risers, and play a role in preventing coking, it has a complex structure, is difficult to design and construct, and is relatively complicated to operate. Summary of the invention

[0004] The purpose of the present disclosure is to provide a reaction separation device, which has a simple structure, is easy to operate and can effectively seal the reaction oil and gas produced in the catalytic cracking or catalytic cracking reaction, thereby inhibiting coking in the settler shell.

[0005] In order to achieve the above-mentioned purpose, the present disclosure provides a reaction separation device, which comprises: a settler, wherein the settler comprises a settler shell, a sealing cover and a cyclone separator arranged in the settler shell, wherein a first oil and gas outlet is arranged above the settler shell, and a first catalyst outlet is arranged below the settler shell, the oil and gas outlet of the cyclone separator is connected to the first oil and gas outlet, the upper end of the sealing cover is sealedly connected to the oil and gas inlet of the cyclone separator, and the lower end is open; and at least two reactors, wherein the at least two reactors are arranged outside the settler shell and each of the reactors comprises a reactor shell, a reaction tube, a separator and a reactor body. , a first connecting pipe and a second connecting pipe, the reactor shell is provided with a second oil and gas outlet and a second catalyst outlet, one end of the reaction tube in the axial direction is provided with a material inlet, and the other end extends into the reactor shell and is provided with a material outlet, the separator is located in the reactor shell and the inlet of the separator is connected with the material outlet, so as to separate the reaction oil and gas and catalyst flowing out of the reaction tube, one end of the first connecting pipe is connected with the second oil and gas outlet, and the other end passes through the settler shell and extends into the closed cover, one end of the second connecting pipe is connected with the second catalyst outlet, and the other end extends into the settler shell.

[0006] Optionally, the second connecting pipe is arranged to be inclined downward, and the upper end of the second connecting pipe is communicated with the second catalyst outlet, and the lower end of the second connecting pipe extends to the bottom of the settler shell.

[0007] Optionally, the settler includes a cover plate, which is located inside the settler shell and has a first gap between its outer circumferential surface and the inner wall of the settler shell, a second gap between the inner circumferential surface and the outer wall of the closure cover, and a through hole is provided on the cover plate, and the lower end of the second connecting pipe is located below the cover plate.

[0008] Optionally, the cyclone separator comprises a catalyst outlet pipe, one end of which is connected to the catalyst outlet of the cyclone separator, and the other end of which extends below the cover plate.

[0009] Optionally, the settler comprises an anti-coking steam ring, which is arranged on an upper wall inside the settler shell to provide anti-coking steam.

[0010] Optionally, the lower end of the closing cover is open, and a gap is provided between the lower end of the closing cover and the settler shell, and the cover plate is located above the gap.

[0011] Optionally, one end of the first connecting pipe is communicated with the second oil and gas outlet, and the other end passes through the side wall or the upper wall of the settler shell and extends into the closed cover.

[0012] Optionally, the reaction tube is configured as a riser or a variable diameter reactor.

[0013] Optionally, the separator is constructed as a cyclone-type quick separator, an inverted L-type quick separator, an inverted T-type quick separator or a bubble-cap type quick separator.

[0014] On the basis of the above scheme, the present disclosure further provides a reaction separation system, which is provided with the above reaction separation device.

[0015] Through the above technical scheme, in the reaction separation device provided by the present disclosure, at least two reactors are arranged on the outside of the settler shell, and the material outlet of the reaction tube in each reactor is connected to the separator in the reaction tube, and the reaction oil gas and catalyst flowing out of the reaction tube can be separated by the separator, that is, in the first separation, the separated catalyst enters the second connecting pipe from the second catalyst outlet on the reactor shell respectively, and is sent into the settler shell through the second connecting pipe, so that it can be discharged from the first catalyst outlet of the settler shell. The separated reaction oil gas enters the first connecting pipe through the second oil and gas outlet on the reactor shell, and is sent into the closed cover through the first connecting pipe. The reaction oil gas transported from the reactor to the closed cover can be transported to the cyclone separator through the oil and gas inlet of the cyclone separator for a second separation. After the second separation, the reaction oil gas can be transported from the oil and gas outlet of the cyclone separator to the first oil and gas outlet of the settler shell, and finally flows out from the first oil and gas outlet. On the one hand, such a setting can improve the separation efficiency of the catalyst, and on the other hand, it can effectively seal the reaction oil and gas produced in the catalytic cracking or catalytic cracking reaction, that is, it can quickly lead out the reaction oil and gas produced in the catalytic cracking or catalytic cracking reaction, and will not accumulate in the settler shell, thereby inhibiting the coking of the reaction oil and gas in the settler shell. In addition, the reactor of the reaction separation device is arranged outside the settler, with a simple structure and convenient construction and operation. Therefore, the reaction separation device provided by the present disclosure has a simple structure, is easy to operate, and can effectively seal the reaction oil and gas produced in the catalytic cracking or catalytic cracking reaction, thereby inhibiting the coking in the reactor shell.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic structural diagram of a reaction separation device provided according to some embodiments of the present disclosure;

[0019] Figure 2 is another schematic diagram of the structure of a reaction separation device provided according to some embodiments of the present disclosure.

[0020] Description of Reference Numerals

[0021] 1-settler; 11-settler housing; 111-first oil and gas outlet; 112-first catalyst outlet; 12-enclosed cover; 121-opening portion; 13-cyclone separator; 131-oil and gas outlet pipe; 132-catalyst outlet pipe; 14-cover plate; 15-anti-coking steam ring; 16-gap; 17-flow guide pipe;

[0022] 2-reactor; 2a-first reactor; 2b-second reactor; 21-reactor shell; 211-second oil and gas outlet; 212-second catalyst outlet; 22-reaction tube; 23-separator; 24-first connecting tube; 25-second connecting tube. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In the present disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the corresponding attached areas. Figure 1 In the drawings, "upper", "lower", "inner", and "outer" refer to the inner and outer relative to the outline of the component itself; in addition, the use of words such as "first" and "second" is intended to distinguish one element from another, and does not have order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limiting the present disclosure.

[0025] According to some embodiments of the present disclosure, a reaction separation device is provided. Figure 1 and Figure 2 Two embodiments of the reaction separation device are shown respectively, wherein reference Figure 1 and Figure 2As shown, the reaction separation device may include: a settler 1, the settler 1 includes a settler shell 11 and a closed cover 12 and a cyclone separator 13 arranged in the settler shell 11, the settler shell 11 is provided with a first oil and gas outlet 111 on the top, and a first catalyst outlet 112 on the bottom, the oil and gas outlet of the cyclone separator 13 is connected to the first oil and gas outlet 111, the upper end of the closed cover 12 is sealedly connected to the oil and gas inlet of the cyclone separator 13, and the lower end is open; and at least two reactors 2, the at least two reactors 2 are arranged outside the settler shell 11 and each reactor 2 includes a reactor shell 21, a reaction tube 22, a separator 23, a first connection The connecting pipe 24 and the second connecting pipe 25, the reactor shell 21 is provided with a second oil and gas outlet 211 and a second catalyst outlet 212, the reaction tube 22 is provided with a material inlet at one end in the axial direction, and the other end extends into the reactor shell 21 and is provided with a material outlet, the separator 23 is located in the reactor shell 21 and the inlet of the separator 23 is connected with the material outlet, so as to separate the reaction oil and gas and the catalyst flowing out of the reaction tube 22, one end of the first connecting pipe 24 is connected with the second oil and gas outlet 211, and the other end passes through the settler shell 11 and extends into the closing cover 12, one end of the second connecting pipe 25 is connected with the second catalyst outlet 212, and the other end extends into the settler shell 11.

[0026] Through the above technical scheme, in the reaction separation device provided by the present invention, at least two reactors 2 are arranged on the outside of the settler shell 11, and the material outlet of the reaction tube 22 in each reactor 2 is connected to the separator 23 in the reaction tube 22, and the reaction oil gas and catalyst flowing out of the reaction tube 22 can be separated by the separator 23, that is, in the first separation, the separated catalysts enter the second connecting pipe 25 from the second catalyst outlet 212 on the reactor shell 21 respectively, and are sent into the settler shell 11 through the second connecting pipe 25, so that they can be discharged from the first catalyst outlet 112 of the settler shell 11. The separated reaction oil and gas enter the first connecting pipe 24 through the second oil and gas outlet 211 on the reactor shell 21, and are sent into the closed cover 12 through the first connecting pipe 24. The reaction oil and gas sent from the reactor 2 to the closed cover 12 can be sent to the cyclone separator 13 through the oil and gas inlet of the cyclone separator 13 for a second separation. The reaction oil and gas after the second separation can be sent from the oil and gas outlet of the cyclone separator 13 to the first oil and gas outlet 111 of the settler shell 11, and finally flow out from the first oil and gas outlet 111. Such a setting can improve the separation efficiency of the catalyst on the one hand, and can effectively seal the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction on the other hand, that is, the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction can be quickly discharged without accumulating in the settler shell 11, thereby inhibiting the coking of the reaction oil and gas in the settler shell 11. In addition, the reactor 2 of the reaction separation device is arranged outside the settler 1, which has a simple structure and is easy to construct and operate. Therefore, the reaction separation device provided by the present invention has a simple structure, is easy to operate, and can effectively seal the reaction oil and gas produced in the catalytic cracking or catalytic cracking reaction, thereby suppressing coking in the settler shell 11.

[0027] It should be noted that the arrangement of at least two reactors 2 allows the reaction raw materials and catalyst to enter the reaction tube 22 under different feeding conditions and different operating conditions to achieve an optimized combined reaction effect. Figure 1 and Figure 2 As shown, the reactor 2 may include a first reactor 2a and a second reactor 2b, wherein the feed conditions and operating conditions of the reaction tubes 22 in the first reactor 2a and the second reactor 2b may be adaptively selected according to actual needs. For example, the outlet reaction temperature of the reaction tube 22 in the first reactor 2a is 450-650°C, and the reaction pressure is 0.05-0.35 MPa (gauge pressure); the outlet reaction temperature of the reaction tube 22 in the second reactor 2b is 480-700°C, and the reaction pressure is 0.05-0.35 MPa (gauge pressure). The present disclosure does not impose any limitation on this, and those skilled in the art may adaptively select according to actual needs.

[0028] In some embodiments of the present disclosure, the cyclone separator 13 and the separator 23 can be configured in any suitable manner, respectively. Optionally, the separator 23 can be constructed as a cyclone-type quick separator, an inverted L-type quick separator, an inverted T-type quick separator or a bubble-type quick separator. In other embodiments of the present disclosure, in order to separate the reaction oil gas and the catalyst flowing out of the reaction tube 22, the separator 23 can also be other construction methods. The present disclosure does not impose any restrictions on this, and those skilled in the art can selectively design it according to actual conditions. The cyclone separator 13 can be configured as a group, and the oil and gas inlet of the group of cyclone separators 13 is sealed and connected to the upper end of the closed cover 12 through the guide pipe 17. The guide pipe 17 and the closed cover 12 can be set and connected with the same diameter, or they can be set and connected with different diameters. It can also be selected that the cyclone separator 13 can be set as multiple groups, and the oil and gas inlets of the multiple groups of main cyclone separators 13 are all connected to the guide pipe 17. That is, the flow guide 17 can distribute the reaction oil and gas in the closed cover 12 to multiple groups of main cyclone separators 13 for secondary separation. Among them, the cyclone separator 13 in each group can be a primary cyclone separator or a multi-stage cyclone separator. This disclosure does not impose any restrictions on this, and the technology in this field can be adaptively selected according to actual needs. In addition, it should be noted that the structures and working principles of the cyclone type quick separator, the inverted L-type quick separator, the inverted T-type quick separator, the bubble-type quick separator and the cyclone separator 13 are all well known to those skilled in the art, and are not elaborated in this disclosure.

[0029] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the second connecting pipe 25 is tilted downwardly and the upper end of the second connecting pipe 25 is connected to the second catalyst outlet 212, and the lower end extends into the lower part of the settler shell 11. The second connecting pipe 25 is tilted downwardly to facilitate the catalyst to be transported from the second catalyst outlet 212 to the lower space in the settler shell 11.

[0030] In some embodiments of the present disclosure, the settler 1 may include a cover plate 14, the cover plate 14 is located in the settler shell 11, and a first gap is provided between the outer peripheral surface of the cover plate 14 and the inner wall of the settler shell 11, and a second gap is provided between the inner peripheral surface and the outer wall of the closed cover 12, and the setting of the first gap and the second gap can be used to solve the problem of equipment expansion, wherein the values ​​of the first gap and the second gap can be selectively designed according to actual needs, and the present disclosure does not impose any restrictions on this. The lower end of the second connecting pipe 25 is located below the cover plate 14. A through hole can be provided on the cover plate 14, and the flow area of ​​the through hole can be adjusted so that the anti-coking steam above flows into the lower part through the through hole, the first gap and the second gap and generates a certain pressure drop, while inhibiting the reaction oil and gas in the closed cover 12 from entering the upper space in the settler shell 11, thereby further realizing the effective sealing of the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction, and then effectively inhibiting the coking of the reaction oil and gas in the settler shell 11.

[0031] In some embodiments of the present disclosure, the cyclone separator 13 includes a catalyst outlet pipe 132, one end of which is connected to the catalyst outlet of the cyclone separator 13, and the other end extends under the cover plate 14 to prevent the reaction oil and gas carried by the catalyst separated by the cyclone separator 13 from entering the upper space in the settler shell 11, thereby further effectively sealing the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction, so as to effectively inhibit the coking of the reaction oil and gas in the settler shell 11.

[0032] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the settler 1 may include an anti-coking steam ring 15, which is arranged on the upper wall of the settler shell 11 to provide anti-coking steam. The anti-coking steam provided by the anti-coking steam ring 15 can, on the one hand, use its own pressure to suppress the reaction oil and gas from entering the upper space of the settler shell 11 from the space below the cover plate 14, and on the other hand, it can also press down the catalyst separated by the cyclone separator 13 and the reaction oil and gas it carries, so that the catalyst separated by the cyclone separator 13 and the reaction oil and gas it carries can enter the closed cover 12 through the gap 16 below the closed cover 12, so as to effectively seal the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction to prevent it from coking in the settler shell 11.

[0033] In some embodiments of the present disclosure, reference Figure 1 and Figure 2As shown, a gap 16 may be provided between the lower end of the closed cover 12 and the settler shell 11, and the cover plate 14 is located above the gap 16. The provision of the gap 16 enables the catalyst separated from the cyclone separator 13 to enter the lower part of the settler shell 11, and finally be discharged from the first catalyst outlet 112 below the settler shell 11, while the residual reaction oil gas in the settler shell 11 can enter the closed cover 12 through the gap 16, and then enter the cyclone separator 13 for a second separation, so that the reaction oil gas generated in the catalytic cracking or catalytic cracking reaction can be effectively sealed, that is, the reaction oil gas generated in the catalytic cracking or catalytic cracking reaction can be quickly discharged without accumulating in the settler shell 11, thereby inhibiting the coking of the reaction oil gas in the settler shell 11. The gap 16 may be constructed in any suitable manner. Optionally, the gap 16 may be constructed as an annular gap disposed between the lower end of the closing cover 12 and the settler housing 11 to prevent the catalyst separated from the cyclone separator 13 and the catalyst transported from the second connecting pipe 25 from accumulating in the gap 16. In other embodiments of the present disclosure, the gap 16 may also be configured in other ways, and the present disclosure does not impose any limitation on this.

[0034] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, the lower end of the closure cover 12 is open, that is, Figure 1 and Figure 2 The open portion 121 is shown in the figure, and a gap 16 is provided between the lower end of the closed cover 12 and the settler shell 11, and the cover plate 14 is located above the gap 16. The open setting facilitates the residual reaction oil and gas in the settler 1 to enter the closed cover 12.

[0035] In some embodiments of the present disclosure, reference Figure 1 and Figure 2 As shown, one end of the first connecting pipe 24 is connected to the second oil and gas outlet 211, and the other end passes through the side wall or upper wall of the settler shell 11 and extends into the closed cover 12. That is, the reaction oil and gas flowing out of the second oil and gas outlet 211 can directly enter the closed cover 12 through the first connecting pipe 24, so as to enter the cyclone separator 13 in the settler 1 for a second separation. In other words, the second oil and gas outlet 211 and the closed cover 12 are directly connected in a closed manner, so that the reaction oil and gas generated in the catalytic cracking or catalytic cracking reaction can be quickly discharged and will not accumulate in the settler shell 11, thereby inhibiting the coking of the reaction oil and gas in the settler shell 11. Among them, reference Figure 1 As shown, one end of the first connecting pipe 24 is connected to the second oil and gas outlet 211, and the other end passes through the side wall of the settler housing 11 and extends into the closed cover 12. Figure 2As shown, one end of the first connecting pipe 24 is connected to the second oil and gas outlet 211, and the other end passes through the upper wall of the settler housing 11 and extends into the closed cover 12. In other embodiments of the present disclosure, the closed connection between the second oil and gas outlet 211 and the closed cover 12 can also be other connection modes, and the present disclosure does not impose any limitation on this.

[0036] In some embodiments of the present disclosure, the reaction tube 22 can be constructed in any suitable manner. Optionally, the reaction tube 22 can be constructed as a riser or as a variable diameter reactor. In other embodiments of the present disclosure, the reaction tube 22 can also be constructed in other ways, and the present disclosure does not impose any restrictions on this. In addition, it should be noted that in order to avoid wear on the reactor during the flow of the catalyst, the inner wall of the reactor shell 21, the inner wall and outer wall of the reaction tube 22, the inner wall and outer wall of the first connecting pipe 24, the inner wall and outer wall of the second connecting pipe 25, the inner wall and outer wall of the separator 23, the inner wall of the guide pipe 17, and the inner wall of the cyclone separator 13 are all provided with wear-resistant linings, wherein the wear-resistant lining can be configured in any suitable manner, and the present disclosure does not impose any restrictions on this.

[0037] On the basis of the above scheme, the present disclosure further provides a reaction separation system, which is provided with the above reaction separation device.

[0038] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0040] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A reaction separation device, characterized in that: The reaction separation device comprises: A settler, the settler comprising a settler shell, a sealing cover and a cyclone separator arranged in the settler shell, the settler shell being provided with a first oil and gas outlet on the top and a first catalyst outlet on the bottom, the oil and gas outlet of the cyclone separator being connected to the first oil and gas outlet, the upper end of the sealing cover being sealedly connected to the oil and gas inlet of the cyclone separator, and the lower end being open; and At least two reactors are arranged on the outside of the settler shell and each of the reactors includes a reactor shell, a reaction tube, a separator, a first connecting pipe and a second connecting pipe. The reactor shell is provided with a second oil and gas outlet and a second catalyst outlet. One end of the reaction tube in the axial direction is provided with a material inlet, and the other end extends into the reactor shell and is provided with a material outlet. The separator is located in the reactor shell and the inlet of the separator is connected with the material outlet to separate the reaction oil and gas and the catalyst flowing out of the reaction tube. One end of the first connecting pipe is connected with the second oil and gas outlet, and the other end passes through the settler shell and extends into the closed cover. One end of the second connecting pipe is connected with the second catalyst outlet, and the other end extends into the settler shell.

2. The reaction separation device according to claim 1, characterized in that: The second connecting pipe is arranged to be inclined downward, and the upper end of the second connecting pipe is communicated with the second catalyst outlet, and the lower end of the second connecting pipe extends into the lower part of the settler shell.

3. The reaction separation device according to claim 2, characterized in that: The settler includes a cover plate, which is located in the settler shell and has a first gap between its outer circumferential surface and the inner wall of the settler shell, a second gap between its inner circumferential surface and the outer wall of the closure cover, and a through hole on the cover, wherein the lower end of the second connecting pipe is located below the cover plate.

4. The reaction separation device according to claim 3, characterized in that: The cyclone separator comprises a catalyst outlet pipe, one end of which is communicated with the catalyst outlet of the cyclone separator, and the other end of which extends below the cover plate.

5. The reaction separation device according to claim 3, characterized in that: The settler comprises an anti-coking steam ring, which is arranged on an upper wall in the settler shell to provide anti-coking steam.

6. The reaction separation device according to claim 3, characterized in that: The lower end of the closing cover is open, and a gap is arranged between the lower end of the closing cover and the settler shell, and the cover plate is located above the gap.

7. The reaction separation device according to claim 1, characterized in that: One end of the first connecting pipe is communicated with the second oil and gas outlet, and the other end passes through the side wall or the upper wall of the settler shell and extends into the closed cover.

8. The reaction separation device according to claim 1, characterized in that: The reaction tube is configured as a riser or a variable diameter reactor.

9. The reaction separation device according to claim 1, characterized in that: The separator is constructed as a cyclone-type quick separator, an inverted L-type quick separator, an inverted T-type quick separator or a bubble-cap type quick separator.

10. A reaction separation system, characterized in that: The reaction separation system is provided with the reaction separation device according to any one of claims 1-9.

Citation Information

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