Hydrocarbon oil hydrogenation reactor

Abstract

The utility model discloses a hydrocarbon oil hydrogenation reactor and belongs to the field of hydrocarbon oil. The hydrocarbon oil hydrogenation reactor comprises a reactor kettle body, a magnetic coupler is fixedly mounted at the top of the reactor kettle body, an explosion-proof motor is connected to the top end, close to the magnetic coupler, of the reactor kettle body, and a stirrer is fixedly mounted at the output end of one side of the explosion-proof motor; one end of the stirrer penetrates into the reactor kettle body, the top of the outer cambered surface of the reactor kettle body is provided with a fixing assembly, the inclined hole of the middle coil pipe section II is arranged at an inclined upward angle, and the inclined hole of the bottom coil pipe section II is arranged at an inclined downward angle. The flowing effect generated by the steam in the solution forms an upward vortex in the upper layer area, and the lower layer part promotes the liquid to flow downwards to the bottom of the kettle body and then reflect to generate a vortex with an upward center, so that the convection phenomenon of the liquid is successfully initiated, in the process, the catalyst moves along with the convection liquid, and the kinetic energy is obviously increased; the bad conditions of deposition and bonding of the catalyst are effectively prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydrocarbon oil, and specifically relates to a hydrocarbon oil hydrogenation reactor. BACKGROUND

[0002] The hydrocarbon oil hydrogenation reactor is a key equipment for hydrocarbon oil hydrogenation treatment in petroleum refining and chemical processes. It is a closed container in which hydrocarbon oil and hydrogen gas undergo hydrogenation reaction under certain temperature, pressure and catalyst. In short, it is like a "reaction factory" that provides a suitable place and conditions for the hydrogenation reaction of hydrocarbon oil, so that various components in the hydrocarbon oil can chemically react with hydrogen gas to improve the quality of the hydrocarbon oil.

[0003] Many reaction kettles use external heating means for heating. This external heating mode has obvious drawbacks. Since heat needs to be transmitted to the internal material through the tank wall, its heat conduction efficiency is relatively low compared to other more efficient heating methods under the same area. Moreover, when the tank is heated from the outside, the heat distribution is difficult to be uniform, which can easily cause the coating inside the reaction kettle to bulge due to local overheating. As the use time goes on, the bulging problem becomes more and more serious, eventually causing the coating to fall off, greatly affecting the service life and performance of the reaction kettle.

[0004] Therefore, the utility model provides a hydrocarbon oil hydrogenation reactor to solve the above problems. UTILITY MODEL CONTENT

[0005] (I) Technical problem solved

[0006] The utility model provides a hydrocarbon oil hydrogenation reactor, aiming to solve the problems raised in the background art.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a reactor kettle body, a magnetic coupler is fixedly installed at the top of the reactor kettle body, an explosion-proof motor is connected to the top end of the reactor kettle body close to the magnetic coupler, a stirrer is fixedly installed at the output end of one side of the explosion-proof motor, one end of the stirrer penetrates into the inside of the reactor kettle body, a fixed assembly is installed on the outer arc surface top of the reactor kettle body, the fixed assembly includes a body fixedly installed on both sides of the upper surface of the reactor kettle body, an extension end is arranged on the upper surface of the body, a cavity is arranged in the inside of the body, a hole is arranged on both sides of the outer arc surface of the body, the hole in the body penetrates into the inside of the cavity, a threaded rod is connected through the inner arc surface of the cavity, a sawtooth head is fixedly installed at one end of the threaded rod.

[0009] As a preferred technical scheme of the present application, the flange plate is connected through the cavity slot in the body, the upper surface of the flange plate is provided with a sleeve, the outer arc surface of the sleeve is provided with a sawtooth groove, and the sleeve penetrates into the cavity slot.

[0010] As a preferred technical scheme of the present application, the sawtooth groove of the outer arc surface of the sleeve is in the same plane as the hole, one side of the sawtooth head is connected in abutment with the sawtooth groove, and the number of the threaded rods is two and is symmetrically distributed with the body as the center.

[0011] As a preferred technical scheme of the present application, the inside of the body is connected through a coil section one, the inner arc surface of the coil section one is a hollow structure, the outer arc surface of the coil section one is provided with a corrosion-resistant layer, and one end of the coil section one is provided with a free section.

[0012] As a preferred technical scheme of the present application, one end of the free section penetrates to the outside of the reactor kettle body, the inner arc surface of the coil section one is connected through a coil section two, and the upper top end of the coil section two is provided with a steam pipe.

[0013] As a preferred technical scheme of the present application, one end of the coil section two away from the steam pipe is provided with a compressed air pipe, one end of the compressed air pipe extends to the inside of the reactor kettle body, and the outer arc surface of the coil section two is provided with an inclined hole.

[0014] (Three) beneficial effects

[0015] 1. By setting the inclined hole of the middle coil section two at an upward angle, and setting the inclined hole of the bottom coil section two at a downward angle, the flow effect of the steam generated in the solution forms upward vortex in the upper layer area, and downward flow of the liquid to the bottom of the kettle body is reflected to generate upward vortex in the center, successfully causing the convection phenomenon of the liquid. In this process, the catalyst moves with the convective liquid, and the kinetic energy is significantly increased, effectively preventing the adverse conditions of catalyst deposition and adhesion.

[0016] 2. By coating the outer surface of the coil section one with a corrosion-resistant layer, preferably the material of the corrosion-resistant layer is PTFE, and by spraying PTFE on the surface under the condition of heating the coil section one, the corrosion-resistant layer is formed, and the PTFE corrosion-resistant layer does not decompose or lose corrosion resistance due to high temperature, and can still effectively protect the coil section one, thereby prolonging the service life of the coil section one. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a sectional overall structure schematic diagram of a hydrocarbon oil hydrogenation reactor;

[0018] Figure 2 It is a structure schematic diagram of the coil section two of the hydrocarbon oil hydrogenation reactor in plan view;

[0019] Figure 3 It is an internal overall sectional structure schematic view of a hydrocarbon oil hydrogenation reactor;

[0020] Figure 4 It is a fixed assembly structure schematic view of a hydrocarbon oil hydrogenation reactor;

[0021] Figure 5 It is a coil section one structure schematic view of a hydrocarbon oil hydrogenation reactor.

[0022] In the figure:

[0023] 1, reactor kettle body; 101, magnetic coupler; 102, explosion-proof motor; 103, stirrer; 2, fixed assembly; 201, body; 202, cavity groove; 203, threaded rod; 204, sawtooth head; 205, flange plate; 206, column sleeve; 207, sawtooth groove; 3, coil section one; 4, free section; 5, coil section two; 501, steam pipe; 502, compressed air pipe; 503, inclined hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] The present application provides a kind of hydrocarbon oil hydrogenation reactor, as shown in Figures 1 to 5 The inner arc surface of coil section one 3 is hollow structure, the outer arc surface of coil section one 3 is equipped with anticorrosive layer, one end of coil section one 3 is equipped with free section 4, one end of free section 4 is penetrated to reactor kettle body 1 outside, the inner arc surface of coil section one 3 is penetrated and connected with coil section two 5, the upper top of coil section two 5 is equipped with steam pipe 501, the end of coil section two 5 away from steam pipe 501 is equipped with compressed air pipe 502, one end of compressed air pipe 502 extends to the inside of reactor kettle body 1, the outer arc surface of coil section two 5 is equipped with inclined hole 503.

[0026] In the reaction system, after the steam is introduced, it will be injected into the solution through the inclined holes 503 on the coil section two 5, wherein the inclined holes 503 on the middle coil section two 5 are arranged in an upward inclined angle, and the inclined holes 503 on the bottom coil section two 5 are arranged in a downward inclined angle, in this way, the flow effect of the steam in the solution forms upward vortex in the upper layer area, and in the lower part, it causes the liquid to flow downward to the bottom of the kettle body and then reflect, thereby generating a central upward vortex, successfully inducing the convection phenomenon of the liquid, in this process, the catalyst moves with the convective liquid, and its kinetic energy is significantly increased, effectively preventing the adverse conditions of catalyst deposition and adhesion, at the same time, the stirring effect of the steam not only improves the kinetic energy of the catalyst, creates favorable conditions for the smooth development of the chemical reaction, but also greatly shortens the required reaction time, after the heating link is completed, the steam pipe 501 is closed, and as the temperature gradually decreases, the liquid will be sucked back into the coil section two 5 under the action of the pressure difference and deposited, at this time, the compressed air pipe 502 is opened, and compressed air is blown into the inside, the liquid is blown out by the strong force of the compressed air, so that the inclined hole 503 remains unblocked, in order to fully prepare for the next use, after the entire operation process is completed, the compressed air pipe 502 is used again to blow in compressed air, and the entire pipeline system is thoroughly cleaned to ensure that the inside of the pipeline is clean and tidy, without residual impurities or liquid, so as to ensure the stable operation of the system and the reliability of the subsequent use.

[0027] The coil section one 3 is used to heat the catalyst in the reactor kettle body 1, and considering the corrosion effect of the materials in the reactor kettle body 1 on the coil section one 3, the outer surface of the coil section one 3 is coated with a corrosion-resistant layer, and the material of the corrosion-resistant layer is preferably PTFE, which is sprayed on the surface under the condition of heating the coil section one 3, thereby forming a corrosion-resistant layer, and in order to further improve the corrosion resistance of the coil section one 3, the coil section one 3 can also be wrapped.

[0028] The top of the reactor kettle body 1 is fixedly installed with a magnetic coupler 101, the top end of the reactor kettle body 1 is connected with an explosion-proof motor 102 close to the magnetic coupler 101, the side output end of the explosion-proof motor 102 is fixedly installed with a stirrer 103, one end of the stirrer 103 penetrates into the inside of the reactor kettle body 1, the outer arc top of the reactor kettle body 1 is installed with a fixed assembly 2, the fixed assembly 2 comprises bodies 201 fixedly installed on both sides of the upper surface of the reactor kettle body 1, the upper surface of the body 201 is provided with an extension end, the inside of the body 201 is provided with a cavity groove 202, both sides of the outer arc surface of the body 201 are provided with holes, the holes of the body 201 penetrate into the inside of the cavity groove 202, the inner arc surface of the cavity groove 202 is connected with threaded rods 203 in penetration, one end of the threaded rod 203 is fixedly installed with a sawtooth head 204, the cavity groove 202 in the body 201 is connected with a flange plate 205 in penetration, the upper surface of the flange plate 205 is provided with a column sleeve 206, the outer arc surface middle section of the column sleeve 206 is provided with a sawtooth groove 207, the column sleeve 206 penetrates into the cavity groove 202, the outer arc sawtooth groove 207 of the column sleeve 206 is in the same plane with the hole, one side of the sawtooth head 204 is tightly connected with the sawtooth groove 207, the number of the threaded rods 203 is two and they are symmetrically distributed with the body 201 as the center.

[0029] In the installation process of the coil section one 3, the fixing operation is implemented on the structural body 201, specifically, the flange plate 205 is fixed by press-fit connection at the inner arc surface of the body 201, the top of the flange plate 205 is provided with the column sleeve 206, when the column sleeve 206 is accurately inserted into the inside of the cavity groove 202, the effective connection between the two disc bodies can be realized, then the threaded rods 203 are connected in penetration in the corresponding holes, so that the sawtooth head 204 at one end of the threaded rod 203 is tightly engaged with the surface of the sawtooth groove 207, through the operation steps, the entire coil section one 3 can be stably placed and fixed in the body 201, ensuring the stability and reliability of the installation.

[0030] The working principle of the hydrocarbon oil hydrogenation reactor is as follows:

[0031] Material preparation and feeding

[0032] Firstly, the hydrocarbon oil to be hydrotreated and hydrogen are respectively conveyed into the reactor kettle body 1 through the corresponding feeding pipelines. The hydrocarbon oil serves as the reaction raw material, and the hydrogen serves as the key reactant of the hydrogenation reaction. During the feeding process, the flow rate, pressure and temperature and other parameters of the hydrocarbon oil and hydrogen can be controlled according to the reaction requirements, so as to ensure that the materials entering the reactor are in a suitable state.

[0033] Stirring and mixing

[0034] The explosion-proof motor 102 starts to rotate the agitator 103. The blades of the agitator 103 stir the hydrocarbon oil and hydrogen gas in the reactor kettle 1 intensively, so that they are mixed thoroughly to form a uniform reaction material system. This helps to increase the contact probability between the reaction materials and promotes the hydrogenation reaction. During the stirring process, the magnetic coupling 101 plays a role in transmitting torque, which transmits the power of the explosion-proof motor 102 to the agitator 103 without contact, while ensuring the sealing performance of the reactor kettle 1 to prevent material leakage.

[0035] Heating and temperature rising

[0036] The coil section one 3 starts to work as the main heating component. The heat carrier (such as hot water, hot oil, etc.) circulates in the hollow inner arc surface of the coil section one 3, and transmits heat to the reaction materials in the reactor kettle 1 by heat conduction, so that the reaction system is heated to the temperature range required for the hydrogenation reaction. The anticorrosion layer (PTFE or other materials) on the outer arc surface of the coil section one 3 effectively prevents the corrosion of the reactor materials, ensuring the long-term stable operation of the heating system. Meanwhile, the coil section one 3 can also be subjected to wrapping treatment to further enhance the corrosion resistance.

[0037] Initiation and progress of hydrogenation reaction

[0038] When the reaction materials reach the appropriate temperature, pressure and good mixing state, the hydrocarbon oil and hydrogen gas undergo hydrogenation reaction under the action of the catalyst. The hydrogen molecules are activated on the surface of the catalyst and undergo addition reaction with the unsaturated bonds in the hydrocarbon oil molecules, so as to realize the hydrogenation treatment of the hydrocarbon oil, such as removing impurities and improving oil quality. Heat is released during the reaction process, and the continuous stirring of the agitator 103 helps to distribute the heat evenly and avoid local overheating.

[0039] Steam heating and convection enhancement

[0040] During the reaction process, steam enters the coil section two 5 through the steam pipe 501. The steam pipe 501 at the top end of the upper coil section two 5 introduces steam, which flows along the coil section two 5 and is injected into the interior of the reaction solution through the inclined holes 503 on the outer arc surface thereof. The inclined holes 503 of the middle coil section two 5 are arranged at an upward angle, so that the steam sprayed therefrom forms upward vortex in the upper layer region; the inclined holes 503 of the bottom coil section two 5 are arranged downward, so as to promote the downward flow of the lower liquid to the bottom of the kettle and then reflect. Such design successfully induces the convection phenomenon of the liquid, so that the reaction materials form strong circulation flow in the kettle. In this process, the catalyst moves with the convection liquid, and its kinetic energy is significantly increased, effectively preventing the undesirable conditions of catalyst deposition and adhesion, further improving the reaction efficiency, so that the hydrogenation reaction is more thorough and rapid.

[0041] Operation after completion of the reaction

[0042] When the hydrogenation reaction reaches a predetermined degree, the feeding is stopped, and the reaction is gradually stopped. As the temperature gradually decreases, the liquid will be sucked back into the coil section two 5 under the action of pressure difference and deposition phenomenon will occur. At this time, the compressed air pipe 502 is opened, and compressed air is blown into the interior. With the strong power of compressed air, the liquid is blown out, so that the inclined hole 503 remains unobstructed and is ready for the next use. After the entire operation process is completed, the compressed air pipe 502 is used again to blow in compressed air, and the entire pipeline system is thoroughly cleaned to ensure that the inside of the pipeline is clean and tidy, without residual impurities or liquid, thereby ensuring the stable operation of the system and the reliability of the subsequent use.

[0043] The role of the fixing assembly

[0044] The fixing assembly 2 plays a key supporting and fixing role in the entire reactor system. The body 201 is fixed on the top of the outer arc surface of the reactor kettle body 1 in a specific way (such as welding or bolt connection), providing a mounting base for the coil section one 3. The flange plate 205 is fixed at the inner arc surface of the body 201 by press-fit connection, and the column sleeve 206 penetrates into the cavity groove 202. Through the close meshing of the threaded rod 203 with the sawtooth head 204 and the sawtooth groove 207, the coil section one 3 is stably placed and fixed in the body 201, ensuring that the coil section one 3 does not displace, shake or loosen during the operation of the reactor, and ensuring the stability of the heating system and the entire reactor structure. It is of great importance to maintain the stability of the reaction conditions and the safe operation of the equipment.

[0045] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A hydrocarbon oil hydrogenation reactor comprising a reactor kettle (1), characterized by: The top of the reactor kettle body (1) is fixedly installed with a magnetic coupler (101), the top end of the reactor kettle body (1) is connected with an explosion-proof motor (102) close to the magnetic coupler (101), one side output end of the explosion-proof motor (102) is fixedly installed with a stirrer (103), one end of the stirrer (103) penetrates into the inside of the reactor kettle body (1), and the outer arc surface top of the reactor kettle body (1) is installed with a fixed assembly (2); The fixed assembly (2) comprises bodies (201) fixedly installed on the upper surfaces of the reactor kettle body (1) on both sides, the upper surface of the body (201) is provided with an extension end, the inside of the body (201) is provided with a cavity groove (202), the outer arc surfaces of the body (201) are both provided with holes, the holes of the body (201) penetrate into the inside of the cavity groove (202), and the inner arc surface of the cavity groove (202) is connected with a threaded rod (203) penetratingly, one end of the threaded rod (203) is fixedly installed with a sawtooth head (204).

2. A hydrocarbon oil hydrogenation reactor according to claim 1, characterized by: The threaded rod (203) penetrates into the cavity groove (202) in the body (201).

3. A hydrocarbon oil hydrogenation reactor according to claim 2, characterized in that: The outer arc surface sawtooth groove (207) of the column sleeve (206) is in the same plane as the hole, one side of the sawtooth head (204) is tightly connected with the sawtooth groove (207), and the number of the threaded rods (203) is two and is symmetrically distributed with the body (201) as the center.

4. The hydrocarbon oil hydrogenation reactor according to claim 1, characterized by: The inside of the body (201) is connected with a coil section one (3) penetratingly, the inner arc surface of the coil section one (3) is a hollow structure, the outer arc surface of the coil section one (3) is provided with a corrosion-resistant layer, and one end of the coil section one (3) is provided with a free section (4).

5. A hydrocarbon oil hydrogenation reactor according to claim 4, characterized in that: One end of the free section (4) penetrates to the outside of the reactor kettle body (1), the inner arc surface of the coil section one (3) is connected with a coil section two (5) penetratingly, and the upper top end of the coil section two (5) is provided with a compressed air pipe (502).

6. A hydrocarbon oil hydrogenation reactor according to claim 5, characterized in that: One end of the coil section two (5) away from the compressed air pipe (502) is provided with a steam pipe (501), one end of the compressed air pipe (502) extends to the inside of the reactor kettle body (1), and the outer arc surface of the coil section two (5) is provided with an inclined hole (503).

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