CN114534642A - Reaction device for preparing aromatic oil from liquefied gas - Google Patents
Reaction device for preparing aromatic oil from liquefied gas Download PDFInfo
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- CN114534642A CN114534642A CN202210299721.1A CN202210299721A CN114534642A CN 114534642 A CN114534642 A CN 114534642A CN 202210299721 A CN202210299721 A CN 202210299721A CN 114534642 A CN114534642 A CN 114534642A
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- reactor
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- aromatic oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/04—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
- B01J8/0446—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical
- B01J8/0449—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds
- B01J8/0453—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical beds the beds being superimposed one above the other
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G5/00—Recovery of liquid hydrocarbon mixtures from gases, e.g. natural gas
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention discloses a reaction device for preparing aromatic oil from liquefied gas, and relates to the technical field of aromatic oil production equipment. The raw materials enter a first-stage bed layer through a raw material inlet, the first reaction is carried out after the raw materials are catalyzed by a catalyst, the raw materials which are not completely reacted enter a second-stage bed layer through a supporting steel grating after the raw materials are guided to rotate by a guide component, mixing with the low-temperature raw material which enters from the middle section feed inlet and is distributed by the middle section feed distributor, cooling, performing catalytic reaction, fixing the flow guide assembly in the reactor through the fixing flange, and the fixed flange can collect the materials flowing down from the wall of the first section of bed layer, so that the materials are prevented from flowing into the wall of the second section of bed layer along the wall of the reactor, the materials do not participate in catalytic reaction to cause low raw material yield, the phenomena of wall flow and uneven mixing of the reactor are solved, the reaction raw materials can be fully reacted and fully mixed and cooled with the cold feed in the middle section to the greatest extent, the conversion rate of the reaction feed is improved, and the service life of the catalyst is prolonged.
Description
Technical Field
The invention relates to the technical field of aromatic oil production equipment, in particular to a reaction device for preparing aromatic oil from liquefied gas.
Background
The traditional reactor for producing aromatic oil is a two-stage reaction, wherein materials enter a first-stage reactor for reaction and then enter a second-stage reactor bed layer through a catalyst bed layer, and are mixed with cold materials fed in the middle stage for cooling and re-reaction. The traditional reactor adopts a direct current mode to enter a second section bed layer, so that a reaction material directly flows into the second section bed layer by pressure, the reaction material can form a certain wall flow phenomenon by the feeding mode, the reaction material can not be uniformly mixed with a first section reaction discharge material in the reaction middle section, and the catalyst activity is influenced by the non-uniform temperature reduction effect.
Disclosure of Invention
The invention provides a reaction device for preparing aromatic oil from liquefied gas, which solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a reaction device for preparing aromatic oil from liquefied gas comprises a reactor, wherein a first-stage bed layer and a second-stage bed layer are separated from the inside of the reactor, a supporting steel grid is fixedly arranged at the separation position of the first-stage bed layer and the second-stage bed layer, a flow guide assembly is arranged on the upper side of the supporting steel grid in an inner cavity of the first-stage bed layer, a raw material inlet is formed in the surface of the top end of the reactor, a material returning opening is formed in the middle section of the reactor, a material returning opening is formed in the middle position of the bottom of the reactor, a reactor discharging opening is formed in the side wall of the bottom of the reactor, a middle-stage feeding opening is formed in the lower part of the middle section of the reactor, and a middle-stage feeding distributor is arranged in the second-stage bed layer at the position of the middle-stage feeding opening; the guide assembly comprises a guide frame main body, a fixing flange is fixedly arranged on the surface of the upper end of the guide frame main body, a plurality of guide vanes are fixedly arranged in the guide frame main body, the guide vanes are inclined and annularly arranged in the guide frame main body, raw materials enter a section of bed layer through a raw material inlet, a first reaction is carried out after catalysis of a catalyst, unreacted raw materials enter a section of bed layer through a supporting steel grating after guide rotation of the guide assembly, the raw materials are mixed with refrigerants entering from a middle section feed inlet and low-temperature raw materials distributed by a middle section feed distributor for cooling and then are subjected to catalytic reaction, the completely reacted materials flow out from a discharge port of the reactor, the catalyst in the reactor exits through a discharge port and a discharge port, the reactor is fixed on a steel structure frame through a fixed support, the guide vanes are arranged on the guide assembly, the guide vanes are all obliquely arranged on the guide assembly to form annular guide, the flow guide assembly is fixed in the reactor through the fixing flange, and the fixing flange can collect the material flowing down from the wall of the first-section bed layer, so that the material is prevented from flowing into the wall of the second-section bed layer along the wall of the reactor, and the material is not involved in catalytic reaction to cause low yield of the raw material.
As a further scheme of the invention: a plurality of fixed supports are uniformly distributed on the outer wall of the reactor, and the reactor is connected with an external fixed base body through the fixed supports.
As a further scheme of the invention: the bottom of the material returning port is provided with a base plane with the height of the base plane of the fixed flange on the flow guide assembly.
As a further scheme of the invention: the middle section feeding distributor comprises a distributor main body fixed on a middle section feeding hole, an inlet end and an inner flow port are formed in the distributor main body, a sealing plug is movably arranged in the distributor main body, an inner spring is connected between the sealing plug and the inner flow port, a rotating connecting block is arranged at the bottom of the distributor main body in a rotating mode, a spray head is fixedly arranged at the bottom of the rotating connecting block, guide vanes are fixedly arranged on the upper side of the rotating connecting block, refrigerant enters the distributor main body from the inlet end, and when the refrigerant enters the distributor main body, force generated by liquid flowing of the refrigerant enters the distributor main body drives the guide vanes to rotate, the spray head is driven to rotate simultaneously, and accordingly the uniformity of the refrigerant is guaranteed.
As a further scheme of the invention: the guide vanes are uniformly arranged on the upper surface of the rotary connecting block.
As a further scheme of the invention: and a communicating groove is formed in the inner wall of the rotary connecting block and communicated with the spray head.
The invention provides a reaction device for preparing aromatic oil from liquefied gas. Compared with the prior art, the method has the following beneficial effects:
raw materials enter a first section of bed layer through a raw material inlet, are subjected to a first reaction after being catalyzed by a catalyst, the raw materials which are not completely reacted enter a second section of bed layer through a supporting steel grating after being guided and rotated by a guide assembly, are mixed with a refrigerant entering from a middle section feed inlet and are subjected to a catalytic reaction after being cooled by a low-temperature raw material distributed by a middle section feed distributor, the materials which are completely reacted flow out from a discharge port of a reactor, the catalyst in the reactor exits from a material return port, the reactor is fixed on a steel structure frame by a fixed support, wherein a plurality of guide vanes are arranged on the guide assembly, are obliquely arranged on the guide assembly to form annular guide flow, the guide assembly is fixed into the reactor through a fixed flange, and the fixed flange can collect the materials flowing down from the wall of the first section of bed layer, prevent the materials from flowing into the wall of the second section of bed layer along the wall, and are not involved in the catalytic reaction to cause low yield of the raw materials, the phenomenon that the reactor forms wall flow and is not uniformly mixed is solved, the reaction raw materials can be fully reacted and fully mixed and cooled with the cold feeding material in the middle section to the maximum extent, the conversion rate of the reaction feeding material is improved, and the service life of the catalyst is prolonged.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic view of a flow guide assembly according to the present invention;
FIG. 3 is a schematic diagram of the middle stage feed distributor of the present invention.
In the figure: 1. a first bed layer; 2. a second-stage bed layer; 3. a raw material inlet; 4. a material returning port; 5. fixing and supporting; 6. a middle section feed inlet; 7. a middle section feed distributor; 71. a distributor body; 72. an inlet end; 73. sealing; 74. an inner spring; 75. an internal flow port; 76. a guide vane; 77. rotating the connecting block; 78. a spray head; 8. a flow guide assembly; 9. a discharge port of the reactor; 10. a material returning port I; 11. a flow deflector; 12. a fixed flange; 13. supporting a steel grating; 15. a reactor; 16. the guide frame main part.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be given with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-3, a reactor for preparing aromatic oil from liquefied gas comprises a reactor 15, the reactor 15 is internally divided into a first-stage bed layer 1 and a second-stage bed layer 2, a supporting steel grid 13 is fixedly arranged at the separation position of the first-stage bed layer 1 and the second-stage bed layer 2, a flow guide component 8 is arranged on the upper side of the supporting steel grid 13 in the inner cavity of the first bed layer 1, the top end surface of the reactor 15 is provided with a raw material inlet 3, one side of the bottom end of the first section of bed layer 1 is provided with a material returning port 4, a first material returning opening 10 is arranged at the middle position of the bottom of the reactor 15, a reactor material outlet 9 is arranged at one side of the bottom end of the second-stage bed layer 2, a middle section feeding hole 6 is formed in one side of the upper end of the second-section bed layer 2, and a middle section feeding distributor 7 is arranged at one end, extending into the second-section bed layer 2, of the middle section feeding hole 6; the flow guide assembly 8 comprises a flow guide frame main body 16, a fixing flange 12 is fixedly arranged on the upper end surface of the flow guide frame main body 16, a plurality of flow guide sheets 11 are fixedly arranged inside the flow guide frame main body 16, the flow guide sheets 11 are inclined and annularly arranged inside the flow guide frame main body 16, raw materials enter a first bed layer 1 through a raw material inlet 3, a first reaction is carried out after catalysis of a catalyst, the raw materials which are not completely reacted enter a second bed layer 2 through a support steel grating 13 after the flow guide of the flow guide assembly 8 is guided and rotated, the raw materials are mixed with a refrigerant entering from a middle section feed inlet 6 and a low-temperature raw material distributed through a middle section feed distributor 7 for cooling and then are subjected to a catalytic reaction, the completely reacted materials flow out from a reactor discharge port 9, the catalyst in the reactor 15 exits through a material return port 4 and a material return port 10, and the reactor 15 is fixed on a steel structure frame by a fixed support 5, wherein set up 10 water conservancy diversion pieces 11 on the water conservancy diversion subassembly 8, water conservancy diversion piece 11 all inclines to install and forms annular water conservancy diversion on water conservancy diversion subassembly 8, and water conservancy diversion subassembly 8 is fixed to reactor 15 in through mounting flange 12, and mounting flange 12 can collect the material that flows down on one section bed 1 wall, prevents that the material from flowing into the wall of two-section bed 2 along the wall, does not participate in catalytic reaction and causes the raw materials productivity low.
A plurality of fixed supports 5 are uniformly distributed on the outer wall of the reactor 15, and the reactor 15 is connected with an external fixed base body through the fixed supports 5.
The bottommost end of the material returning opening 4 and the base surface of the fixing flange 12 on the flow guide assembly 8 are in the same plane.
The middle-section feeding distributor 7 comprises a distributor main body 71 fixed on the middle-section feeding hole 6, an inlet end 72 and an inner flow port 75 are arranged in the distributor main body 71, a plug 73 is movably arranged in the distributor main body 71, an inner spring 74 is connected between the plug 73 and the inner flow port 75, a rotating connecting block 77 is rotatably arranged at the bottom of the distributor main body 71, a spray head 78 is fixedly arranged at the bottom of the rotating connecting block 77, a guide vane 76 is fixedly arranged at the upper side of the rotating connecting block 77, refrigerant enters the distributor main body 71 from the inlet end 72, when the refrigerant enters the distributor main body 71, the guide vane 76 is driven to rotate by the force generated by the liquid flow of the refrigerant, the spray head 78 is driven to rotate at the same time, the uniformity of the refrigerant spraying is further ensured, and the refrigerant enters the distributor main body 71, when the liquid pressure reaches a certain force, the plug 73 is opened from the inlet section 72, the refrigerant flows in, and when the refrigerant delivery is closed, the liquid pressure disappears, and the plug 73 blocks the inlet section again under the action of the internal spring 74.
Wherein, the whole diameter of the reaction device is not limited to the arrangement mode of big end up.
The guide vanes 76 are provided in plurality and are circumferentially and uniformly distributed at the upper end of the rotary connecting block 77.
The inner wall of the rotary connecting block 77 is provided with a communicating groove, and the communicating groove is communicated with the spray head 78.
When the invention is used, raw materials enter a first section of bed layer 1 through a raw material inlet 3, a first reaction is carried out after the catalysis of a catalyst, the raw materials which are not completely reacted enter a second section of bed layer 2 through a support steel grating 13 after being guided and rotated by a guide assembly 8, the raw materials are mixed with a refrigerant entering from a middle section feed inlet 6 and a low-temperature raw material distributed by a middle section feed distributor 7 for cooling and then are subjected to a catalytic reaction, the completely reacted materials flow out from a reactor discharge port 9, the catalyst in the reactor 15 exits from a material return port 4 and a material return port I10, the reactor 15 is fixed on a steel structure frame through a fixed support 5, wherein 10 guide vanes 11 are arranged on the guide assembly 8, the guide vanes 11 are obliquely arranged on the guide assembly 8 to form annular guide, the guide assembly 8 is fixed in the reactor 15 through a fixed flange 12, and the fixed flange 12 can collect the materials flowing down from the wall of the first section of bed layer 1, prevents the material from flowing into the wall of the second-stage bed layer 2 along the wall and causing low yield of the raw material because the material does not participate in the catalytic reaction.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a reaction unit of liquefied gas system aromatic oil, includes reactor (15), the inside partition of reactor (15) has one section bed (1) and two-stage bed (2), its characterized in that: a supporting steel grating (13) is fixedly arranged at the separation position of the first section of bed layer (1) and the second section of bed layer (2), a flow guide assembly (8) is arranged on the upper side of the supporting steel grating (13) in the inner cavity of the first section of bed layer (1), a raw material inlet (3) is formed in the top surface of the reactor (15), a material returning port (4) is formed in one side of the bottom end of the first section of bed layer (1), a material returning port I (10) is formed in the middle position of the bottom of the reactor (15), a reactor discharging port (9) is formed in one side of the bottom end of the second section of bed layer (2), a middle section feeding port (6) is formed in one side of the upper end of the second section of bed layer (2), and a middle section feeding distributor (7) is arranged at one end of the middle section feeding port (6) extending into the second section of bed layer (2); the flow guide assembly (8) comprises a flow guide frame body (16), a fixing flange (12) is fixedly arranged on the upper end surface of the flow guide frame body (16), a plurality of flow guide sheets (11) are fixedly arranged in the flow guide frame body (16), and the flow guide sheets (11) are inclined in the flow guide frame body (16) and are annularly arranged.
2. The reaction device for liquefying aromatic oil according to claim 1, wherein: the reactor is characterized in that a plurality of fixed supports (5) are uniformly distributed on the outer wall of the reactor (15), and the reactor (15) is connected with an external fixed base body through the fixed supports (5).
3. The reaction device for liquefying aromatic oil according to claim 1, wherein: the bottommost end of the material returning opening (4) and the base surface of the fixing flange (12) on the flow guide assembly (8) are located on the same plane.
4. The reaction device for liquefying aromatic oil according to claim 1, wherein: middle section feeding distributor (7) is including fixing distributor main part (71) on middle section feed inlet (6), entrance point (72) and interior flow port (75) have been seted up to the inside of distributor main part (71), the inside activity of distributor main part (71) is provided with shutoff stopper (73), be connected with between shutoff stopper (73) and interior flow port (75) interior spring (74), the bottom of distributor main part (71) is rotated and is provided with rotation connecting block (77), the fixed shower nozzle (78) that is provided with in bottom of rotation connecting block (77), the fixed guide vane (76) that is provided with of upside of rotation connecting block (77).
5. The reaction device for liquefying aromatic oil according to claim 4, wherein: the guide vanes (76) are arranged in a plurality and are circumferentially and uniformly distributed at the upper end of the rotating connecting block (77).
6. The reaction device for liquefying aromatic oil according to claim 4, wherein: the inner wall of the rotary connecting block (77) is provided with a communicating groove which is communicated with the spray head (78).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210299721.1A CN114534642A (en) | 2022-03-25 | 2022-03-25 | Reaction device for preparing aromatic oil from liquefied gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210299721.1A CN114534642A (en) | 2022-03-25 | 2022-03-25 | Reaction device for preparing aromatic oil from liquefied gas |
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| Publication Number | Publication Date |
|---|---|
| CN114534642A true CN114534642A (en) | 2022-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210299721.1A Pending CN114534642A (en) | 2022-03-25 | 2022-03-25 | Reaction device for preparing aromatic oil from liquefied gas |
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| CN (1) | CN114534642A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915482A (en) * | 2006-06-21 | 2007-02-21 | 中国石油集团工程设计有限责任公司抚顺分公司 | No wall flow technique and equipment for hydrogenation reaction chamber |
| CN102151523A (en) * | 2011-03-14 | 2011-08-17 | 高玉玲 | Aromatization reactor |
| CN104525057A (en) * | 2014-12-26 | 2015-04-22 | 太原理工大学 | Device and process for preparing gasoline using synthesis gas by two-step method |
| US20170015917A1 (en) * | 2014-03-14 | 2017-01-19 | Morten Muller Ltd. Aps | Scale collection and predistribution tray for vessel with downward two-phase flow |
| US20190169088A1 (en) * | 2016-08-31 | 2019-06-06 | Exxonmobil Chemical Patents Inc. | Hydrocarbon Conversion |
| CN111013495A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Intersegment feeding structure of multi-section fixed bed reactor, multi-section fixed bed reactor and application of intersegment feeding structure |
| CN211706717U (en) * | 2019-11-19 | 2020-10-20 | 上海继尔新材料科技有限公司 | Polyethylene comonomer feeding device in polyethylene production |
| CN113426384A (en) * | 2021-07-29 | 2021-09-24 | 上海兖矿能源科技研发有限公司 | Multi-section fixed bed reactor and Fischer-Tropsch synthesis reaction system |
-
2022
- 2022-03-25 CN CN202210299721.1A patent/CN114534642A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1915482A (en) * | 2006-06-21 | 2007-02-21 | 中国石油集团工程设计有限责任公司抚顺分公司 | No wall flow technique and equipment for hydrogenation reaction chamber |
| CN102151523A (en) * | 2011-03-14 | 2011-08-17 | 高玉玲 | Aromatization reactor |
| US20170015917A1 (en) * | 2014-03-14 | 2017-01-19 | Morten Muller Ltd. Aps | Scale collection and predistribution tray for vessel with downward two-phase flow |
| CN104525057A (en) * | 2014-12-26 | 2015-04-22 | 太原理工大学 | Device and process for preparing gasoline using synthesis gas by two-step method |
| US20190169088A1 (en) * | 2016-08-31 | 2019-06-06 | Exxonmobil Chemical Patents Inc. | Hydrocarbon Conversion |
| CN111013495A (en) * | 2018-10-10 | 2020-04-17 | 中国石油化工股份有限公司 | Intersegment feeding structure of multi-section fixed bed reactor, multi-section fixed bed reactor and application of intersegment feeding structure |
| CN211706717U (en) * | 2019-11-19 | 2020-10-20 | 上海继尔新材料科技有限公司 | Polyethylene comonomer feeding device in polyethylene production |
| CN113426384A (en) * | 2021-07-29 | 2021-09-24 | 上海兖矿能源科技研发有限公司 | Multi-section fixed bed reactor and Fischer-Tropsch synthesis reaction system |
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Application publication date: 20220527 |
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