CN215540719U

CN215540719U - Actively-mixed continuous flow reactor and reaction system

Info

Publication number: CN215540719U
Application number: CN202120572037.7U
Authority: CN
Inventors: 张海彬; 李嫣然; 王春; 王志磊; 卜春坡; 游恒志; 钟明; 李正强
Original assignee: Shenzhen E Zheng Tech Co ltd
Current assignee: Shenzhen E Zheng Tech Co ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2022-01-18
Anticipated expiration: 2031-03-19

Abstract

The utility model discloses an active mixing continuous flow reactor and a reaction system, wherein the active mixing continuous flow reactor comprises a reaction tube, a dispersing piece and a driving device, the reaction tube is provided with a reactant containing cavity, the reactant containing cavity is used for containing reactants, the dispersing piece is arranged in the reactant containing cavity, the dispersing piece extends along the axial direction of the reaction tube and divides the reactant containing cavity into a plurality of containing spaces, each containing space extends along the axial direction of the reaction tube, the dispersing piece is provided with a through hole for transferring the reactants between two adjacent containing spaces, and a driving component is connected with the reaction tube and/or the dispersing piece and is used for driving the reaction tube and/or the dispersing piece to reciprocate along the radial direction of the reaction tube. The technical scheme of the utility model solves the problem of low production efficiency caused by poor mass transfer effect of the existing tubular reactor.

Description

Actively-mixed continuous flow reactor and reaction system

Technical Field

The utility model relates to the technical field of reaction devices, in particular to an active mixing continuous flow reactor and a reaction system.

Background

The tubular reactor belongs to a plug flow reactor, reactants in the tubular reactor are mixed through free diffusion, in order to realize process amplification production with lower cost and improve yield, the pipe diameter is usually increased, but when the pipe diameter is increased, solid particles, bubbles and the like in multiphase reaction are very difficult to disperse in liquid, the mixing performance in the tubular reactor is greatly reduced, the multiphase mixing effect is very poor, namely the mass transfer effect is poor, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide an active mixing continuous flow reactor, aiming at solving the problem of low production efficiency caused by poor mass transfer effect of the existing tubular reactor.

To achieve the above object, the present invention provides an active mixing continuous flow reactor comprising:

the reaction tube is provided with a reactant cavity, and the reactant cavity is used for accommodating reactants;

the dispersion piece is arranged in the reactant containing cavity and extends along the axial direction of the reaction tube so as to divide the reactant containing cavity into a plurality of containing spaces, each containing space extends along the axial direction of the reaction tube, and the dispersion piece is provided with a through opening for transferring reactants between two adjacent containing spaces; and

and the driving device is connected with the reaction tube and/or the dispersing piece and is used for driving the reaction tube and/or the dispersing piece to reciprocate along the radial direction of the reaction tube.

In one embodiment, the dispersing member is a partition plate disposed in the reactant chamber.

In one embodiment, the number of the partition plates is multiple, and the multiple partition plates are arranged at intervals along the radial direction of the reaction tube.

In one embodiment, the dispersion member is disposed in a curved shape.

In one embodiment, the dispersing member is a cylinder disposed in the reactant chamber.

In an embodiment, the plurality of through openings are arranged at intervals along the length direction of the cylinder, and/or the plurality of through openings are arranged at intervals along the circumferential direction of the cylinder.

In one embodiment, the cylinder is configured to hold a solid.

In one embodiment, the dispersion member is spirally disposed.

In one embodiment, a gas permeable tube is disposed in the reactant cavity, and the gas permeable tube is used for containing a gaseous reactant.

The utility model also provides a reaction system which is characterized by comprising one or more active mixing continuous flow reactors as described above, wherein a plurality of active mixing continuous flow reactors are arranged in series or in parallel.

According to the technical scheme, the reactant containing cavity is formed in the reaction tube, and reactants can move along the axial direction of the reaction tube after entering the reactant containing cavity; a dispersion piece is arranged in the reactant containing cavity, the reactant containing cavity is divided into a plurality of containing spaces extending along the axial direction of the reaction tube by the dispersion piece, and a through hole for transferring reactants between two adjacent containing spaces is formed in the dispersion piece; and the driving device is connected with the reaction tube and/or the dispersing part, when the driving device drives the reaction tube and/or the dispersing part to do reciprocating motion along the radial direction of the reaction tube, the reaction tube and the dispersing part do reciprocating motion along the radial direction of the reaction tube together, or the dispersing part does reciprocating motion along the radial direction of the reaction tube in the reaction tube, so that the reactant in the reactant containing cavity moves relative to the dispersing part under the action of gravity and inertia and moves in each containing space, or the reactant moves between the adjacent containing spaces through the through hole, namely the dispersing part plays a role in radial shearing on the reactant moving in the reactant containing cavity along the axial direction, thereby better realizing the mixing of the reactant, improving the mass transfer effect and improving the production efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic diagram of the structure of an actively mixed continuous flow reactor according to an embodiment of the present invention;

FIG. 2 is an exploded view of the actively mixed continuous flow reactor of FIG. 1;

FIG. 3 is a schematic diagram of the structure of another embodiment of the actively-mixed continuous flow reactor of the present invention;

FIG. 4 is an exploded view of the actively mixed continuous flow reactor of FIG. 3;

FIG. 5 is a schematic cross-sectional view of the actively-mixed continuous flow reactor of FIG. 3;

FIG. 6 is a schematic structural view of yet another embodiment of an actively-mixed continuous flow reactor of the present invention;

FIG. 7 is an exploded view of the actively mixed continuous flow reactor of FIG. 6;

FIG. 8 is a schematic diagram of the structure of one embodiment of a continuous feed apparatus for an actively mixed continuous flow reactor;

FIG. 9 is an exploded view of the continuous feed device of FIG. 8;

FIG. 10 is a schematic structural diagram of an embodiment of a reaction system of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Reaction tube	100	Feeding device body
11	Reactant chamber	101	Gas feed inlet
				12	Ventilation tube	102	Discharge port
13	Supporting tube	200	Charging screw
				20	Dispersing piece	300	Driving motor
21	Through opening	400	Magnetic coupling
				30	Heat exchange sleeve

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, if appearing throughout the text, "and/or" is meant to include three juxtaposed aspects, taking "A and/or B" as an example, including either the A aspect, or the B aspect, or both A and B satisfied aspects. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides an active mixing continuous flow reactor.

Referring to fig. 1 and 2, in an embodiment of the present invention, the active mixing continuous flow reactor includes a reaction tube 10, a dispersing member 20, and a driving device, the reaction tube 10 is provided with a reactant containing cavity 11, the reactant containing cavity 11 is used for containing a reactant, the dispersing member 20 is disposed in the reactant containing cavity 11, the dispersing member 20 extends along an axial direction of the reaction tube 10 and divides the reactant containing cavity 11 into a plurality of containing spaces, the dispersing member 20 is provided with a through opening 21 for transferring the reactant between two adjacent cavity spaces, and the driving device is connected to the reaction tube 10 and/or the dispersing member 20 and is used for driving the reaction tube 10 and/or the dispersing member 20 to reciprocate along a radial direction of the reaction tube 10. Wherein, the opening 21 is a round hole, an elliptical hole, a square hole, a triangular hole or an opening with irregular shape.

According to the technical scheme, the reactant containing cavity 11 is formed in the reaction tube 10, and reactants can move along the axial direction of the reaction tube 10 after entering the reactant containing cavity 11; a dispersing member 20 is arranged in the reactant accommodating cavity 11, the reactant accommodating cavity 11 is divided into a plurality of accommodating spaces extending along the axial direction of the reaction tube 10 by the dispersing member 20, and an opening 21 for transferring reactants between two adjacent accommodating spaces is arranged on the dispersing member 20; and the driving device is connected to the reaction tube 10 and/or the dispersing member 20, when the driving device drives the reaction tube 10 and/or the dispersing member 20 to reciprocate along the radial direction of the reaction tube 10, the reaction tube 10 and the dispersing member 20 reciprocate along the radial direction of the reaction tube 10 together, or the dispersing member 20 reciprocates along the radial direction of the reaction tube 10 in the reaction tube 10, so that the reactant in the reactant accommodating chamber 11 moves relative to the dispersing member 20 under the action of gravity and inertia and moves in each accommodating space, or transfers between adjacent accommodating spaces through the through opening 21, that is, the dispersing member 20 plays a role of radial shearing on the reactant moving in the reactant accommodating chamber 11 along the axial direction, thereby better realizing the mixing of the reactants, improving the mass transfer effect, and thus improving the production efficiency. It will be appreciated that the reaction tube 10 is provided with a feed inlet for the reactants to enter the reactant volume 11.

In general, the slurry has a high specific gravity, and is in the lower part of the reaction tube 10 by gravity, and the gas is in the upper part of the reaction tube 10, and if the specific gravity of the solid particles in the slurry is different from that of the liquid, the solid particles will settle to the bottom of the liquid, thus forming a multi-layer distribution, and the mixing effect is poor. In order to realize effective mixing of gas, liquid and solid, the above embodiment enhances three-phase mass and heat transfer by designing the internal structure of the reaction tube 10 and actively mixing.

In addition, the active mixing continuous flow reactor is a tubular reactor, so the active mixing continuous flow reactor has the advantages of small back mixing of the tubular reactor, high volume efficiency, high temperature control precision and low cost, and can be widely applied to laboratory research and industrial production.

It will be appreciated that in the above embodiment, when the driving end of the driving means is connected to the reaction tube 10, the reaction tube 10 is driven to reciprocate, thereby shaking the reactant in the reactant-containing chamber 11 and accelerating the dispersion of the reactant. Wherein, the dispersion member 20 can be fixed or unfixed with the reaction tube 10, when the dispersion member 20 is fixed with the reaction tube 10, the dispersion member 20 and the reaction tube 10 move synchronously, and the reactant shakes under the action of gravity and inertia, and the reactant is subjected to the shearing dispersion action of the dispersion member 20 in the shaking process, so as to improve the mass transfer effect; when dispersion member 20 and reaction tube 10 are not fixed, dispersion member 20 rocks under action of gravity and the effect of inertia at reaction tube 10 reciprocating motion's in-process, but dispersion member 20 rocks and rocks desynchronously with the reactant to play the shearing dispersion effect to the reactant, promote the mass transfer effect. The reaction tube 10 of the scheme has the advantages of simple internal structure, easy processing, low cost and no transmission shaft sealing problem.

In an embodiment, the material inlet is disposed at one axial end of the reaction tube 10, the reactant enters the reactant accommodating chamber 11 from the material inlet and is gradually accumulated, the reactant entering the reactant accommodating chamber flows axially, and the reactant flows axially while being subjected to a radial shearing action of the dispersing member 20, so as to improve the mass transfer effect.

In some embodiments, dispersion member 20 is a divider plate (not shown) disposed within reactant reservoir 11. The reactant accommodating cavity 11 is divided into a plurality of accommodating spaces by the aid of the partition plates arranged in the reactant accommodating cavity 11, and the reactant flowing along the axial direction is radially sheared by the partition plates, so that high-efficiency mass transfer is realized. Wherein, the partition plate is fixed with the inner wall of the reaction tube 10 or the partition plate is movably connected in the reaction tube 10.

In one embodiment, the partition plate is provided in plural, such as two, three, four, five or more, and the plural partition plates are arranged at intervals in the radial direction of the reaction tube 10. Through setting up a plurality of dispersion pieces 20, the shearing effect to the reactant is strengthened, further promotes the mass transfer effect. Wherein, a plurality of division boards are parallel arrangement or are close parallel arrangement each other. It can be understood that, in this embodiment, a plurality of partition plates are fixed on the inner wall of the reaction tube 10 at intervals, or a plurality of partition plates are arranged in a grid shape and then movably connected in the reaction tube 10, so that the plurality of partition plates are arranged at intervals along the radial direction of the reaction tube 10.

In one embodiment, the openings 21 on the partition plates are arranged in a staggered manner, so that the reactants are sheared in multiple stages, and the mixing is more uniform.

Referring to fig. 2, in some embodiments, the dispersion member 20 is disposed in a curved shape. More openings 21 can be arranged on the dispersion member 20 arranged in a curved surface shape, so that the transfer speed of the reactant between each accommodating space is accelerated and the mixing is more rapid and uniform when the shearing effect of the reactant is ensured.

In one embodiment, the dispersion member 20 is a cylinder disposed within the reactant reservoir 11. The cylinder is arranged in the reactant accommodating cavity 11 of the reaction tube 10, and reactants are bound to be subjected to shearing force when entering and exiting the cylinder, so that the mixing effect is better. In other embodiments, the dispersion member 20 may also be shaped to have a C-shape, S-shape, or irregular shape in cross-section. In this embodiment, the reaction tube 10 has a very simple internal structure, is easy to process, and has a low cost. Need not set up additional structure and strengthen passive mixing, avoided because of the inhomogeneous problem of material density difference dispersion, do not have the sealed problem of transmission shaft and the solid piles up the problem such as formation dead volume equally.

In one embodiment, the through openings 21 are provided in plural, and the plural through openings 21 are arranged at intervals along the length direction of the cylinder, and/or the plural through openings 21 are arranged at intervals along the circumference direction of the cylinder. Through a plurality of mouths 21 of arranging along the length direction of drum and/or along the circumference interval of drum for the reactant more evenly disperses to each position in reactant appearance chamber 11, when the guarantee is to the shearing effect of reactant, makes the transfer speed of reactant between each accommodation space accelerate, mixes more evenly fast.

In one embodiment, the cylinder is configured to hold a solid. The cylinder is used for containing solid reactants or solid catalysts, the solid swings in the cylinder to drive gas and liquid to contact with the solid in the cylinder, and the gas and the liquid flow in gaps of solid particles through the openings 21 on the cylinder to react. The problem that solid particles are difficult to disperse in liquid is solved, and the mass transfer and heat transfer performance is good. In the case of large reactant particles and large specific gravity, for example, the solid particles are 20-100 mesh in size, the solid particles are placed inside the cylinder, and gas and liquid flow through the solid to mix, so that the problem of difficult dispersion when the reactant particles are large is solved.

Referring to fig. 3 to 5, in an embodiment, a plurality of sleeves, such as two, three, four or more layers, are disposed in the cylinder, and the size of the openings 21 on different sleeves can be adjusted according to actual requirements, for example, a sleeve containing large particles has a larger size of the openings 21 than the size of the openings 21 of a sleeve containing small particles, so that the fluid can flow faster and the mixing is more uniform on the premise of avoiding the particles from leaving the sleeve from the openings 21. Different solid particles are accommodated in different sleeves, so that solid particles such as solid reactants, solid products, solid catalysts and the like can be conveniently classified and taken out.

Referring to fig. 6 and 7, in one embodiment, the dispersion member 20 is spirally disposed, for example, in a spring shape, the diameter of the spring (the shape of the spring is not limited) is 2/3 of the diameter of the reaction tube 10, the pitch of the spiral is 10mm, and the reactant is sufficiently sheared and mixed by the spiral dispersion member 20, thereby solving the problems of solid precipitation or poor mass transfer effect in the reaction of solid particle suspension, such as crushing, dispersion, emulsification, and the like.

In the above embodiment, the reactant chamber 11 is provided with the gas permeable tube 12, and the gas permeable tube 12 is used for containing the gas reactant. Gas is input into permeability cell 12, and in other fluids in reactant appearance chamber 11 were dispersed through the bleeder vent on the 12 pipe walls of permeability cell, and dispersion 20 rocked and drive the bubble and disperse in gas, when reaction tube 10 moved from top to bottom, fluid and the reaction tube 10 inner structure collision in reaction tube 10, under the shearing action of inner structure, continuously kept the mixing of convection cell, strengthened mass transfer heat transfer.

In an embodiment, the vent pipe 12 is an AF2400 polytetrafluoroethylene hydrophobic vent pipe 12, the pipe diameter of the vent pipe 12 is 8mm to 20mm, for example, 10mm, and the vent pipe 12 is disposed in the middle of the spring-shaped or cylindrical dispersing member 20, the dispersing member 20 drives the vent pipe 12 to rock, so as to improve the stirring effect, and the hydrophobic air permeability of the AF2400 polytetrafluoroethylene hydrophobic vent pipe 12 is beneficial to dispersing the gas into the liquid, so as to further improve the mixing effect. Through combining together vibrating mixing mode and membrane dispersion tympanic bulla from top to bottom, have the gas-liquid solid intensive mixing effect and have bubble homodisperse again, the tympanic bulla mixed function has strengthened the solid three-phase mass transfer heat transfer of gas-liquid, has splendid gas-liquid solid three-phase's mass transfer heat transfer performance, promotes reaction efficiency. The unique gas dispersion bubbling tube and the dispersion member 20 in the reaction tube 10 are matched with an up-and-down oscillation mode, so that the mass transfer performance of gas-liquid-solid multiphase reaction is greatly improved, the reaction efficiency is improved, an ideal reaction environment and high-performance equipment are provided for continuous preparation and production of high-added-value fine chemicals, medical intermediates, new materials and the like, and the kettle type process is favorably promoted to be changed into a miniaturized continuous process in the fields of chemical industry and pharmacy.

In the above embodiment, since the AF2400 polytetrafluoroethylene hydrophobic vent pipe 12 is a thin film pipe, the structural strength of the thin film pipe is low, and in order to avoid the influence on gas feeding due to deformation or damage of the vent pipe 12 in the reaction stirring process, the support pipe 13 is arranged inside the vent pipe 12, and the wall of the support pipe 13 is provided with the air holes, or the support pipe 13 is arranged outside the vent pipe 12, and the wall of the support pipe 13 is provided with the air holes. Moreover, the supporting tube 13 is arranged, so that the ventilation tube 12 is more convenient to mount and has better sealing effect. The material of the support tube 13 is not limited, such as a hard plastic tube, a stainless steel tube, etc.

In one embodiment, the diameter of the reaction tube 10 is 400mm-1000mm, the AF2400 ptfe hydrophobic air permeable tube 12 and the dispersing member 20 are disposed inside the reaction tube 10, and the diameter of the dispersing member 20 is 1/2-3/4 of the diameter of the reaction tube 10, such as 2/3 of the diameter of the dispersing member 20 of the reaction tube 10. The dispersing part 20 is a metal pipe provided with a plurality of round holes, the size of the round holes is 10mm-20mm, the dispersing part 20 radially shakes in the reaction pipe 10 under the action of external force to shear the axially coming fluid, so that a high-shear stirring effect is formed, and the dispersing part is suitable for gas/liquid, solid/liquid, liquid/liquid, gas/liquid/solid reactions and the like. The advantages of the membrane reactor and the active mixing reactor are combined, so that the membrane reactor has the excellent bubble dispersion function of the membrane reactor, and the active mixing reactor has the advantages of the solid particle dispersion aspect. Has excellent mass transfer and heat transfer performance of gas phase, liquid phase and solid phase, and can realize continuous process amplification and production of multiphase reaction.

In the above embodiment, the dispersing members 20 with different structures can realize a plurality of different reaction conditions, thereby greatly expanding the application space.

In one embodiment, the axis of the reaction tube 10 is horizontally disposed, the gas permeable tube 12 is disposed near the bottom of the reactant chamber 11, and the gas permeable tube 12 is disposed in the middle of the spring-like or cylindrical dispersing member 20, so as to better stir the bottom, so that solid particles or suspension liquid which easily sink under the action of gravity can be better dispersed uniformly.

In one embodiment, the heat exchange sleeve 30 is sleeved outside the reaction tube 10, heat is transferred to the heat exchange fluid in the heat exchange sleeve 30 through the heat exchange sleeve 30, the fluid only flows between the heat exchange sleeve 30 and the reaction tube 10, the heat transfer distance is short, and the stirrer accelerates the heat transfer and maintains good heat transfer performance. Furthermore, the heat transfer in the reaction tube 10 can also be locally adjusted by adjusting the temperature of the gas fed into the gas-permeable tube 12.

In the above embodiment, the driving device is a motor, an air cylinder or an electric cylinder, and the motor, the air cylinder or the electric cylinder is used to drive the reaction tube 10 to move, so that the dispersing component 20 rocks in the reaction tube 10, and the shearing and stirring of the reactant in the reactant accommodating cavity 11 are realized.

Referring to fig. 8 and 9, in an embodiment of the present invention, the active mixing continuous flow reactor further includes a continuous feeding device connected to the reaction tube to continuously feed the reaction tube. The continuous feeding device comprises a feeding device body 100, a feeding screw rod 200, a driving motor 300 and a magnetic coupler 400, wherein the feeding device body 100 is provided with a feeding port and a feeding cavity communicated with a reactant cavity, and the feeding port is communicated with the feeding cavity so that solid particles can enter the feeding cavity; the feeding screw rod 200 is arranged in the feeding cavity, and the materials in the feeding cavity can be dispersed by the rotation of the feeding screw rod 200, so that the materials can more uniformly enter the reactant cavity of the reaction equipment from the feeding cavity, and uniform feeding is realized; the driving motor 300 is used to drive the feeding screw 200 to rotate, and one end of the magnetic coupler 400 is connected to the driving end of the driving motor 300, and the other end is connected to the feeding screw 200. Wherein, magnetic coupling 400 includes the copper rotor, permanent magnet rotor and controller, there is air gap (being called the air gap) between copper rotor and the permanent magnet rotor, there is not the mechanical connection of transmission moment of torsion, utilize magnetic coupling 400 to be connected reinforced screw rod 200 and driving motor 300, moreover, the steam generator is simple in structure, high durability and convenient installation, long service life, energy-saving effect is good, the maintenance work load is little, allow great installation centering error (can be 5mm at most), the installation and debugging process has been simplified greatly, overload protection function has, thereby entire system's reliability has been improved, can promote driving motor 300's startability, reduce impact and vibration, thereby reduce the influence of charging process to reaction equipment.

According to the technical scheme, the feeding screw rod 200 is arranged in the feeding cavity of the feeding device body 100, the driving motor 300 is used for driving the feeding screw rod 200 to rotate, so that solid particles entering the feeding cavity from the feeding port are driven to spirally move, the solid particles are uniformly fed into a reactant cavity of reaction equipment, the feeding screw rod 200 is connected with the driving motor 300 through the magnetic coupler 400, no mechanical connection for torque transmission exists, the feeding screw rod 200 is in soft (magnetic) connection with the driving motor 300, the change of the axial torque and the rotating speed of the feeding screw rod 200 is realized through adjusting an air gap, the adjustment is more accurate and stable, the feeding screw rod 200 is better utilized for uniformly feeding the reaction equipment, and the problem that the solid materials are difficult to uniformly feed in a continuous flow process is solved.

It will be understood that in the above embodiments, the feed port can be used for feeding solid particles into the feed cavity, but the feed port is not limited to only feeding solid particles into the feed cavity, and in practical applications, liquid and gas can also be fed into the feed cavity through the feed port, i.e. the continuous feeding device in the above embodiments can be used for feeding single-phase reaction and feeding multi-phase reaction.

In the above embodiment, the shape of the feed screw 200 is not limited, and the length thereof matches the length of the feeder body 100. The position of the feeding screw rod 200 in the feeding cavity can be adjusted according to actual requirements, for example, the feeding screw rod 200 is arranged in the middle of the feeding cavity, so that the structure of the continuous feeding device is stable; or, considering that solid particles or solid in slurry can sink under the action of gravity, the gravity center of the continuous feeding device in the feeding process moves downwards, so that the feeding screw rod 200 can be arranged at the lower part of the feeding cavity, the structural stability of the continuous feeding device cannot be influenced, and materials gathered at the lower part of the feeding cavity can be better dispersed.

In one embodiment, the feeding device body 100 further has a liquid feed opening. It can be understood that, at the reinforced in-process of slurry, not only solid particle gets into reinforced appearance chamber, still needs liquid material to get into reinforced appearance chamber, through setting up liquid feed inlet for liquid material can get into the reinforced appearance chamber from liquid feed inlet, thereby makes solid and liquid get into the feeding appearance chamber from different mouths respectively at the reinforced in-process, avoids solid particle to be drenched by liquid material and the jam charge door of agglomeration for the slurry is reinforced more evenly.

In one embodiment, the liquid feed port is provided with a plunger pump, liquid materials are fed through the plunger pump, the liquid material feeding process is convenient to adjust due to the fact that the plunger pump is high in rated pressure, compact in structure and convenient to adjust flow, the fed liquid materials are mixed with solid particles, the solid particles are kept suspended under the stirring of the feeding screw rod 200, and uniform slurry feeding is achieved.

In one embodiment, the feeding device body 100 further has a gas feed opening 101. Through setting up gas feed inlet 101 for gas feed is separated with liquid feeding and solid feeding, thereby more is favorable to gas and liquid feeding and solid feeding misce bene. In addition, the pressure in the feeding cavity can be adjusted through the inert gas through the gas feeding hole 101, and the pressure balance in the feeding cavity is kept.

In an embodiment, the continuous feed device further comprises a pressure display and/or a safety valve. Through setting up the pressure display, the operating personnel of being convenient for know reinforced pressure of holding the intracavity, avoid pressure unbalance, the setting of relief valve can prevent that reinforced pressure of holding the intracavity from exceeding regulation numerical value, the safety in the guarantee reaction process.

The uniform feeding of solid catalyst in continuous flow processes has always been a difficult problem that plagues the application of continuous flow multiphase reactors. The diaphragm pump with small flow has the problems of uneven slurry pumping and low pumping pressure. Industrial diaphragm reciprocating pumps can achieve high pressure pumping of slurry, but the flow rate is large and cannot be applied in continuous flow processes. The continuous feeding device of the technical scheme of the utility model can ensure more uniform feeding while meeting continuous flow multiphase reaction conditions, solves the feeding problem of slurry and solid under high pressure under small flow, and can realize continuous feeding of the slurry in a high-pressure system.

In one embodiment, the feeding device body 100 further has a discharge port 102 for connecting with the reaction equipment, and the discharge port 102 is provided with a metering type needle valve, and the output flow of the slurry is controlled by the metering type needle valve, so that the feeding process is better controlled. The pressure of the slurry pumped by the conventional diaphragm pump is low, typically within 10bar, and the pumping is not uniform enough and the solution forms a deposit in the pumping line. The present embodiment adopts high pressure gas to push the material into the reactor, the pressure can reach 100bar, and the slurry feeding of the high pressure continuous flow system is solved. The catalyst solid and the liquid are continuously added into the feeding cavity, are uniformly mixed under the stirring of the feeding screw rod 200, and directly enter the reaction equipment after passing through the metering needle valve, so that the slurry feeding uniformity is improved, and the deposition of a pump pipe does not exist.

In an embodiment, the discharge port 102 and the gas charging port are respectively disposed at two ends of the feeding device body 100, so that after the gas material enters the charging cavity, more sufficient time is provided for mixing with the solid or liquid material in the charging cavity, and charging is more uniform.

In one embodiment, the outlet 102 is disposed at the bottom of the feeding device body 100. The discharge hole 102 is arranged at the bottom of the feeding device, so that the solid or slurry material can smoothly come out from the discharge hole 102, the solid or slurry material can be uniformly fed, and the subsequent cleaning work of the feeding device body 100 is more convenient. Wherein, charge door and discharge gate 102 set up electromagnetic switch respectively, and in the charging process, the electromagnetic switch of the charge door that is located the upper end is opened, and solid or slurry adds in the reinforced appearance chamber, and the stirring of feeding screw 200 is then closed to the electromagnetic switch of the charge door that is located the upper end, and the electromagnetic switch of the discharge gate 102 that is located the lower extreme is opened, carries out solid feeding or slurry feeding in small batches to the reactant appearance chamber that the reaction set up through discharge gate 102.

In one embodiment, the feeding device body 100 is a high pressure resistant stainless steel cavity, so that the feeding device is safer and more stable and has a longer service life.

In the above embodiment, the continuous feeding device further includes an electric heater, and the electric heater is used for heating the feeding device body 100, so as to realize continuous feeding of slurry at high temperature, save the preheater, prevent deposition of solids in the preheater, and solve the problem of continuous feeding at high temperature. The type of the electric heater is not limited. Traditional feeding device, diaphragm pump can only pump sending thick liquids at normal atmospheric temperature, and the thick liquids pipeline need enter the reactor after preheating, and the thick liquids deposit more in the preheating pipe, and the solid that gets into in the reactor is inhomogeneous, causes continuous reaction in-process local catalyst not enough, seriously influences the reaction effect, and the catalyst waste that the price is expensive is serious. In the above embodiment, through setting up continuous feed arrangement and including electric heater, realize that the slurry directly gets into the reactor after preheating in reinforced holding chamber, saved the pre-heater before the reactor, prevented the deposit of solid in the pre-heater simultaneously, promoted reaction efficiency and catalyst utilization efficiency, saved the cost, solved and lasted the feeding problem under the high temperature.

Referring to fig. 10, the present invention further provides a reaction system, which includes an active mixing continuous flow reactor, and the specific structure of the active mixing continuous flow reactor refers to the above embodiments, and since the reaction system adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are provided, and no further description is provided herein. The active mixing continuous flow reactor is provided with one or a plurality of active mixing continuous flow reactors, and the active mixing continuous flow reactors are connected in series or in parallel, so that the reaction yield is improved or the retention time is prolonged. For example, the serial arrangement of a plurality of active mixing continuous flow reactors can realize multi-stage continuous production, multi-step reaction or multi-temperature zone reaction or scale-up. The multiple active mixing continuous flow reactors are arranged in parallel, so that the pressure of a reaction pipe 10 is reduced, the flux is large, the process amplification production of the reaction in several minutes or even dozens of minutes is realized, and the problems that the heterogeneous reaction continuous process amplification with gas-liquid-solid participation is poor, the mass transfer and heat transfer performance in the production is poor, and the amplification cannot be realized in the small-scale reaction are solved. Has wide application prospect in the aspects of continuous process amplification and production.

In the above embodiment, the heat exchange sleeves 30 of the plurality of active mixing continuous flow reactors are arranged in series or in parallel, and the heat exchange sleeves 30 form a single temperature zone when connected in series and form a multi-temperature zone when connected in parallel. The port of the active mixing continuous flow reactor is provided with a gas regulating valve to balance the gas pressure of the multistage series pipes. The gas outlet of the series reactor is externally connected with a backpressure regulating valve, and the reaction material outlet is connected with a gas-liquid separator. The whole set of reactor is fixed on the oscillating bottom plate and moves along with the reciprocating motion of the oscillating bottom plate. The oscillating bottom plate is driven by a motor to reciprocate or driven by a cylinder to reciprocate, the frequency of the motion is adjustable, the oscillating frequency is 2HZ-10HZ, the amplitude is 10mm-60mm, and the reaction and the high-efficiency mass and heat transfer are realized.

In one embodiment, the inner diameter of the reaction tube 10 is 20mm-80mm, the length of the reaction tube 10 is 20mm-100mm, an oil bath heat exchange sleeve 30 is arranged outside the reaction tube 10, the axis of the reaction tube 10 is horizontally or nearly horizontally arranged, a vent pipe 12 is arranged in the reaction tube 10 at the position below the axis, the diameter of the vent pipe 12 is 3mm-10mm, the vent pipe 12 is an amorphous polytetrafluoroethylene AF2400 microporous pipe or an expanded PTFE hydrophobic vent microporous pipe or a microporous metal gas distributor, and the bottom of the reaction tube 10 is bubbled through the vent pipe 12, so that gas and slurry at the bottom of the reaction tube 10 are mixed conveniently; two layers of porous partition plates are arranged in the reaction tube 10, and the slurry vertically passes through the partition plates in the vertical reciprocating vibration process of the reaction tube 10, is sheared by the partition plates, is dispersed into liquid drops and is fully mixed with gas. The reaction tube 10 vibrates up and down in a mode that the motor drives the reaction tube to vibrate, the vibration amplitude is larger than 0mm and smaller than or equal to 60mm, the maximum vibration amplitude oscillation frequency range is larger than 0rpm and smaller than or equal to 500rpm, and the reaction tube 10 is fixed on the motor through the bracket.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An actively mixed continuous flow reactor, comprising:

the dispersion piece is arranged in the reactant containing cavity, extends along the axial direction of the reaction tube and divides the reactant containing cavity into a plurality of containing spaces, and a through opening for transferring reactants between two adjacent containing spaces is formed in the dispersion piece; and

2. The active mixing continuous flow reactor of claim 1, wherein the dispersion member is a divider plate disposed within the reactant chamber.

3. The active mixing continuous flow reactor of claim 2, wherein the partition plate is provided in plurality, and a plurality of the partition plates are arranged at intervals in a radial direction of the reaction tube.

4. The active mixing continuous flow reactor of claim 1, wherein the dispersion member is disposed in a curved shape.

5. The active mixing continuous flow reactor of claim 4, wherein the dispersion member is a cylinder disposed within the reactant chamber.

6. The active mixing continuous flow reactor of claim 5, wherein the plurality of openings are provided and are spaced apart along the length of the cylinder and/or are spaced apart along the circumference of the cylinder.

7. The active mixing continuous flow reactor of claim 5, wherein the cylinder is configured to hold a solid.

8. The active mixing continuous flow reactor of claim 1, wherein the dispersion member is disposed in a helical configuration.

9. The active mixing continuous flow reactor of any one of claims 1 to 8, wherein a gas permeable tube is disposed within the reactant volume for containing a gaseous reactant.

10. A reaction system comprising an actively-mixed continuous flow reactor as claimed in any one of claims 1 to 9, wherein said actively-mixed continuous flow reactor is provided in one or more, and a plurality of said actively-mixed continuous flow reactors are provided in series or in parallel.