Reaction kettle for solid-liquid reaction
By employing a three-layer agitator and a liquid feed distributor in the reactor, the problem of uneven mixing in the solid-liquid reactor was solved, achieving thorough mixing and efficient reaction of the solid and liquid.
Patent Information
- Application Number
- CN202520339597.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing solid-liquid reactors suffer from insufficient stirring during the stirring process, which leads to the easy deposition of solids and uneven mixing of solids and liquids. This is especially true when reacting small particles or powders with high temperatures, resulting in incomplete reactions and prolonged reaction times.
A three-layer agitator structure was designed, including an upper axial flow agitator, a middle axial flow agitator, and a bottom radial flow agitator. Combined with a liquid feed distributor and a demister, it ensures sufficient solid-liquid contact and mixing, and reduces the impact of bubbles.
This achieves full contact between solid and liquid, improves stirring efficiency, reduces the impact of solid deposition and bubbles, and ensures a more uniform and efficient reaction.
Smart Images
Figure CN223901802U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of reaction kettle, concretely relates to a reaction kettle for solid-liquid reaction. BACKGROUND
[0002] The reaction kettle is widely understood as a container with physical or chemical reaction, and through the structure design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing function of process requirements are realized. The reaction kettle has been widely applied to petroleum, chemical industry, rubber, pesticide, dye, medicine and food fields, as a pressure container used to complete the vulcanization, nitration, hydrogenation, alkylation, polymerization, condensation and other process.
[0003] In the chemical reaction, the solid-liquid reaction often involves, but the existing solid-liquid reaction kettle has the phenomenon that the stirring is insufficient, the solid is easy to deposit to the bottom, and the solid and liquid are not mixed uniformly. Especially when the solid particles are small particles or powder, the viscosity is very high after the solid-liquid mixing, and the stirring capacity is very high. Once the stirring cannot meet the reaction requirements, the reaction will be insufficient, and the reaction time will be longer. UTILITY MODEL CONTENT
[0004] In view of the above technical problems, the utility model provides a reaction kettle for solid-liquid reaction, which can solve the problems of insufficient contact and uneven stirring during solid-liquid reaction, and is especially suitable for the reaction in which the material in the reaction kettle is small solid particles or powder and the reaction temperature is much higher than the boiling point of the added liquid.
[0005] The technical scheme of the utility model is:
[0006] The utility model provides a reaction kettle for solid-liquid reaction, which comprises a kettle body and a stirring device, the kettle body top is equipped with solid feeding port and top liquid feeding port, the stirring device includes stirring motor and the stirring shaft arranged in the kettle body, the stirring motor can drive the stirring shaft rotation, the stirring shaft is equipped with upper layer axial flow agitator, middle layer axial flow agitator, bottom layer radial flow agitator in proper order, the kettle body below the bottom layer radial flow agitator is equipped with liquid feeding distributor, the liquid feeding distributor is equipped with a plurality of outlet liquid outlet holes downwards, liquid feeding is sprayed into the kettle downwards from the liquid outlet hole, and the liquid feeding distributor is connected with the bottom liquid feeding port.
[0007] Preferably, the upper layer axial flow agitator and the middle layer axial flow agitator are three-blade paddle agitators, and the bottom layer radial flow agitator is a turbine dispersion disc agitator.
[0008] Preferably, the liquid feeding distributor is annular tubular, and the bottom of the annular tubular liquid feeding distributor is further provided with a corresponding support.
[0009] Preferably, a first defoaming net is arranged in the kettle body above the upper axial flow agitator, and a second defoaming net is arranged in the kettle body between the upper axial flow agitator and the middle axial flow agitator.
[0010] Preferably, the kettle body is composed of an upper head, a kettle body main body and a lower head arranged in sequence from top to bottom.
[0011] Preferably, the upper axial flow agitator and the middle axial flow agitator are arranged in the kettle body main body.
[0012] The bottom radial flow agitator and the liquid feed distributor are arranged in the lower head.
[0013] Preferably, at least one long strip-shaped baffle arranged longitudinally is fixed to the inner wall of the kettle body main body, and a plurality of holes are arranged on the baffle.
[0014] Preferably, a pointed end is arranged at the bottom of the baffle, and the pointed end extends into the lower head.
[0015] Preferably, the kettle body is provided with a jacket, a jacket feed inlet is arranged at the bottom of the jacket, and a jacket discharge outlet is arranged at the upper side of the jacket.
[0016] Preferably, a gas phase outlet is arranged at the top of the kettle body, a reactant discharge outlet is arranged at the bottom of the kettle body, and the distance between the liquid feed distributor and the reactant discharge outlet is 10-15 cm.
[0017] Preferably, a catalyst feed inlet, a pressure gauge port, a sight glass port and a thermometer are arranged at the top of the kettle body.
[0018] The beneficial effects of the utility model are as follows:
[0019] (1) The liquid material is sprayed into the kettle from the liquid outlet hole downward through the distributor at the bottom, the contact area between the solid and the liquid is increased, the influence of high temperature and bubbles on the liquid material is avoided, the effective reaction time is increased, and the reaction is more sufficient.
[0020] (2) The baffle with holes is arranged in the reaction kettle, and the solid particles are suspended under the stirring action of the multi-layer paddles to avoid the deposition of the solid particles.
[0021] (3) The defoaming net is further arranged to eliminate and reduce the bubble foam generated in the high-temperature reaction process, and reduce the harmful influence of the bubble foam on the reaction process of the reactants. BRIEF DESCRIPTION OF DRAWINGS
[0022] The utility model will be further described in combination with the drawings and examples:
[0023] Figure 1It is the internal structure schematic view of the reaction kettle of the utility model;
[0024] Figure 2 It is the structure schematic view of the upper axial flow stirrer, the middle axial flow stirrer and the bottom radial flow stirrer.
[0025] In the drawing, mark as: 1, upper head; 2, kettle body main part; 3, lower head; 4, stirring motor; 5, stirring shaft; 6, upper axial flow stirrer; 7, middle axial flow stirrer; 8, bottom radial flow stirrer; 9, liquid feed distributor; 10, bottom liquid feed port; 11, baffle; 12, first defoaming net; 13, second defoaming net; 14, jacket; 15, jacket feed port; 16, jacket discharge port; 17, gas phase outlet; 18, reactant discharge port; 19, thermometer sleeve. DETAILED DESCRIPTION
[0026] To make the purpose, technical scheme and advantage of the utility model more clear and obvious, below combining with specific embodiment and referring to the drawings, the utility model is further detailedly explained.It should be understood that these descriptions are only exemplary, and not to limit the scope of the utility model.In addition, in the following description, the description of known structure and technology is omitted to avoid unnecessary confusion of the concept of the utility model.
[0027] As Figure 1 And 2 Shown, a kind of reaction kettle for solid-liquid reaction, including kettle body and stirring device, kettle body is by upper head 1, kettle body main part 2 and lower head 3 sequentially distributed from top to bottom.It includes stirring motor 4 and stirring shaft 5 in stirring device, stirring shaft 5 is located in the interior of kettle body, and stirring motor 4 can drive stirring shaft 5 rotation.Stirring shaft 5 is sequentially provided with upper axial flow stirrer 6, middle axial flow stirrer 7, bottom radial flow stirrer 8, upper axial flow stirrer 6 and middle axial flow stirrer 7 are located in kettle body main part 2, and bottom radial flow stirrer 8 is located in lower head 3.Upper axial flow stirrer 6 and middle axial flow stirrer 7 in the embodiment are preferably three-blade paddle stirrer, and bottom radial flow stirrer 8 is preferably turbine dispersion disc type stirrer, and the reaction kettle is distributed by three layers of stirrer upper-middle-lower, guarantees the sufficiency of stirring, so that solid material can be more fully contacted with liquid material, reduces the possibility of solid condensation in reaction process, improves the uniformity of reaction, so that reaction is more sufficient.
[0028] Below the bottom radial flow agitator 8, an annular tubular liquid feed distributor 9 is located inside the vessel body. This liquid feed distributor 9 is also located within the lower head 3 and is supported by welded brackets. The liquid feed distributor 9 has multiple downward-facing outlet holes, through which liquid is sprayed into the vessel. The liquid feed distributor 9 is connected to the bottom liquid inlet 10. The liquid material is sprayed into the vessel from the bottom through the downward-facing outlet holes of the distributor, increasing the contact area between the solid and liquid, avoiding the influence of high temperature and air bubbles on the liquid material, increasing the effective reaction time, and making the reaction more complete.
[0029] At least one longitudinally arranged elongated baffle 11 is fixed on the inner wall of the main body 2 of the vessel. The baffle 11 has multiple holes and a pointed part at the bottom, which extends into the lower head 3. The baffle 11 greatly reduces the "vortex" phenomenon during stirring, increases the turbulence of the stirred liquid, and improves the efficiency of stirring and mixing.
[0030] A first demister 12 is installed in the vessel above the upper axial flow stirrer 6, and a second demister 13 is installed in the vessel between the upper axial flow stirrer 6 and the middle axial flow stirrer 7. The demisters help to eliminate and reduce bubbles and foam generated during the high-temperature reaction, and reduce the harmful effects of bubbles and foam on the reaction process. The first demister 12 and the second demister 13 have corresponding notches to avoid the stirring shaft 5, and other notches to avoid components that need to pass through the corresponding demisters, such as longitudinal baffles 11.
[0031] The vessel body is equipped with a jacket 14, which serves to keep the vessel warm or cold. The bottom of the jacket 14 is provided with a jacket inlet 15, and the upper side of the jacket 14 is provided with a jacket outlet 16. The relevant cold / hot carriers enter the jacket 14 through the jacket inlet 15 and flow out of the jacket 14 through the jacket outlet 16.
[0032] The upper end cap 1 is provided with a top liquid inlet and a solid inlet. Figure 1 (Not shown in the image), the upper head 1 is also equipped with a gas phase outlet 17, and the lower head 3 is equipped with a reactant outlet 18. The distance between the liquid feed distributor 9 and the reactant outlet 18 is 10-15 cm. If gas is generated during the reaction, the gas phase outlet 17 ensures that the gas pressure inside and outside the reactor can be similar. The upper head 1 is also equipped with a catalyst inlet, a pressure gauge port, a sight glass port, and a thermometer. A corresponding thermometer sleeve 19 is installed inside the reactor. The temperature can be observed through the thermometer port. During the reaction, the reaction situation inside the reactor can be observed through the sight glass port. The catalyst inlet, pressure gauge port, sight glass port, and thermometer port are located at... Figure 1 Not shown in the image.
[0033] The reaction kettle of the embodiment is suitable for the case that the solid feed is solid small particles or powder, and is especially suitable for the reaction in which the reaction temperature is much higher than the boiling point of the dropping feed. In use, the solid feed enters through the solid feed port, part of the liquid material such as solvent enters the liquid feed distributor 9 through the bottom liquid feed port 10, and then is sprayed into the kettle through the liquid outlet hole downward, the solid feed forms a suspension slurry under the action of the solvent and stirring, and other liquid materials participating in the reaction can be added dropwise through the top liquid feed port to continuously enter the reaction kettle at a certain flow rate to react with the solid material.
[0034] It should be understood that the above specific embodiments of the utility model are only used for example or explanation of the principle of the utility model, and do not constitute the limitation of the utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without deviating from the spirit and scope of the utility model shall be included in the protection scope of the utility model. In addition, the appended claims of the utility model are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or the equivalent form of such scope and boundary.
Claims
1. A reactor for solid-liquid reaction, comprising a reactor body and a stirring device, the reactor body is provided with a solid feeding port and a top liquid feeding port, the stirring device comprises a stirring shaft arranged in the reactor body and a stirring motor capable of driving the stirring shaft to rotate, characterized in that, The upper layer axial flow agitator, the middle layer axial flow agitator and the bottom layer radial flow agitator are sequentially arranged on the stirring shaft, a liquid feeding distributor is arranged in the kettle body below the bottom layer radial flow agitator, a plurality of liquid outlet holes with downward outlets are arranged on the liquid feeding distributor, and the liquid feeding distributor is connected with the bottom liquid feeding port.
2. The reactor for solid-liquid reaction according to claim 1, wherein The upper layer axial flow agitator and the middle layer axial flow agitator are three-blade paddle agitators, and the bottom layer radial flow agitator is a turbine dispersion disc agitator.
3. The reactor for solid-liquid reaction according to claim 1, wherein The liquid feeding distributor is an annular tube.
4. The reactor for solid-liquid reaction according to claim 1, wherein A first defoaming net is arranged in the kettle body above the upper layer axial flow agitator, and a second defoaming net is arranged in the kettle body between the upper layer axial flow agitator and the middle layer axial flow agitator.
5. The reactor for solid-liquid reaction according to claim 1, wherein The kettle body is composed of an upper head, a kettle body main body and a lower head which are sequentially arranged from top to bottom.
6. The reactor for solid-liquid reaction according to claim 5, wherein The upper layer axial flow agitator and the middle layer axial flow agitator are arranged in the kettle body main body. The bottom layer radial flow agitator and the liquid feeding distributor are arranged in the lower head.
7. The reactor for solid-liquid reaction according to claim 5, wherein At least one long strip-shaped baffle arranged longitudinally is fixed to the inner wall of the kettle body main body, and a plurality of holes are arranged on the baffle.
8. The reactor for solid-liquid reaction according to claim 7, wherein A sharp end part is arranged at the bottom of the baffle, and the sharp end part extends into the lower head. 9.The reactor for solid-liquid reaction according to claim 1, wherein, The kettle body is provided with a jacket, a jacket feeding port is arranged at the bottom of the jacket, and a jacket discharging port is arranged at the upper side of the jacket. 10.The reactor for solid-liquid reaction according to claim 1, wherein, A gas phase outlet is arranged at the top of the kettle body, and a reactant discharging port is arranged at the bottom of the kettle body.