CN212549559U - Continuous solid-borne multiphase reactor - Google Patents

Abstract

The utility model provides a but be used for continuous solid type multiphase reactor, is including putting the reactor barrel of feed inlet and discharge gate, its characterized in that: the reactor comprises a reactor barrel, wherein a gas feed port and a liquid feed port are respectively arranged at the left end and the right end of the reactor barrel, a discharge port is arranged at the upper end of the reactor barrel, a reactor cavity which can carry a catalyst fixedly and has a smooth surface and no dead angle is arranged in the discharge port of the reactor barrel, and a gas filter, a liquid filter and a discharge filter are respectively fixedly arranged in the gas feed port, the liquid feed port and the discharge port. The utility model discloses catalyst can not get into ejection of compact filter's filter element in reaction process, so can guarantee that the catalyst is complete to stop in the reactor, guarantee that the reaction can go on always steadily in succession. The utility model discloses but have enlargeable process route, preferred selection material, steerable shearing force and temperature, low energy consumption, product yield and purity are high, reduce cost, advantages such as safety in production are applicable to organic chemical synthesis industry field.

Description

Continuous solid-borne multiphase reactor

Technical Field

The utility model relates to a reaction unit applied to the field of organic chemical synthesis, in particular to a multiphase reactor device which is suitable for gas-liquid, gas-solid, liquid-gas or gas-liquid-solid three-phase reactions and the like and for executing a reaction method from the reactions, namely a multiphase reactor capable of fixing continuous reaction of a catalyst.

Background

In the prior art, a traditional fixed bed reaction kettle is widely applied to heterogeneous catalytic reaction. The fixed bed reaction kettle generally comprises an upper end enclosure, a lower end enclosure and a kettle body, wherein a solid catalyst is placed in the kettle body, gas enters from the upper end enclosure, and after the gas reacts under the action of the solid catalyst in the kettle body, the gas leaves the fixed bed reaction kettle from the lower end enclosure.

If adopt the fixed bed reation kettle of above-mentioned structure, the internal solid catalyst of cauldron can't be fixed in reation kettle usually internally, can take out the internal catalyst of cauldron through the export when gaseous or liquid flow through the cauldron body, leads to the solid catalyst quantity in the fixed bed reation kettle to reduce gradually, influences the effect of whole reaction.

In addition, the conventional multi-phase reaction kettle has the following defects: the fixed asset output is lower, the batch production utilization rate of the reaction kettle is low, and the matching public works and the occupied land utilization rate are low. Personnel cost is high, production process personnel complex operation, and production maloperation risk is big. The cost of the gas raw materials is high, and the consumption of the nitrogen and hydrogen replacement operation process is large and dangerous due to the large volume of the reaction kettle. The catalyst has high raw material cost, frequent collision (stirring) of the catalyst in the production process, easy oxidation in the adding and recovering processes, high danger and consumption and low catalyst recovery rate. The high energy consumption and cost reaction is usually accompanied with the temperature rise and temperature reduction, and the meaningless energy consumption is larger. The reaction time is long (production time is long) in order to ensure safety and controllability. The reaction process is difficult to sample, the sampling under pressure is dangerous, and the reaction end point cannot be accurately judged. The product purity is low, the reaction termination is difficult, the liquid holdup of the reaction kettle is large, and side reactions are easy to generate and impurities are generated in the slow cooling process.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome the defect that exists among the above-mentioned prior art, but provide one kind and can avoid the internal solid catalyst of traditional reation kettle to leave the heterogeneous reactor of fixed bed of type of can immobilizing in succession through the export.

The utility model discloses a following technical scheme has solved its technical problem: the utility model provides a but be used for continuous solid type multiphase reactor, is including putting the reactor barrel of feed inlet and discharge gate, its characterized in that: the reactor comprises a reactor barrel, wherein a gas feed port and a liquid feed port are respectively arranged at the left end and the right end of the reactor barrel, a discharge port is arranged at the upper end of the reactor barrel, a reactor cavity which can carry a catalyst fixedly and has a smooth surface and no dead angle is arranged in the discharge port of the reactor barrel, and a gas filter, a liquid filter and a discharge filter are respectively fixedly arranged in the gas feed port, the liquid feed port and the discharge port.

The utility model discloses compare its advantage with traditional reation kettle and lie in:

1. the process route has the advantage of amplification. In the conventional reaction kettle, a process route and a method adopted by each step of chemical reaction are generally determined in a laboratory stage, and when the originally selected process route and unit reaction method expose a serious problem which is difficult to overcome in a pilot-scale test or an amplification stage, other routes have to be reselected and amplification is carried out according to the new routes.

The utility model discloses thereby it compares experiment continuous type production time multiple Y's multiple magnification to only need the adjustment of parallelly connected reactor quantity X. The experimental route design development, pilot test or amplification zero adjustment can be realized.

2. The advantage of material selection. Compare reation kettle, the utility model discloses continuous type reaction is mainly realized in by the pipeline, compares the pipeline jar body container class material selection scope narrower because the restriction of the processing degree of difficulty. (meeting the requirements of heat exchange and pressure, and a plurality of materials can not be realized into a tank structure)

Static electricity in the traditional enamel reaction kettle is not easy to be led out, and the possibility of generating static electricity is provided for the materials to be stirred and rotated ceaselessly. The continuous pipeline reaction can adopt an anti-static pipe lined with an anti-corrosion conductive layer.

Conventional continuous reaction materials: 316 stainless steel, PP, PTFE, PVDF, aluminum, Fiber Reinforced Plastic (FRP).

3. Advantage of shear force control (reaction surface area). The effective shearing aims to fully mix the reactants, thereby increasing the reaction area and accelerating the reaction speed. Compared with a reaction kettle, the shearing force of the gas-liquid continuous flow reactor can be adjusted, and the reaction mixing of each section is stable and uniform.

In the kettle type stirring, the shearing force is influenced by the relative linear motion of the stirring paddle, and the shearing force is weak relative to the outer side and the central position of the stirrer. The influence on the product sensitive to the mixing force is obvious.

The stirring effect problem of small material volume in the laboratory is not obvious. The stirring of the same material is not suitable because the shearing force which is suitable for stabilizing is too fast or too slow. And the traditional stirring mode has dead corners under the bottom, so that the material deposition reaction is not sufficient.

4. The advantage of temperature control. The influence of temperature on the quality of products is large, different temperature reactions directly influence the yield of the products, the reaction time, and even partial reaction can be realized within a specific temperature range, and other temperature environments easily cause reaction byproducts or impurities.

Compared with a reactor carried by a reaction kettle, the heat exchange area is large, and the temperature uniformity of the held materials can be ensured. And the laboratory can not perform the heat and mass transfer problem due to the small volume of the material.

5. The advantage of energy consumption. A plurality of cooling and heating media are usually introduced into the reaction kettle and switched according to the process requirements, so that the cooling and heating media are required to be repeatedly switched to control materials in a batch of production. Not only the middle unnecessary energy consumption is very serious, but also the heating and cooling process time is longer, thereby greatly reducing the production efficiency and the product quality. The continuous reaction can realize sectional temperature control, different cooling and heating media are introduced in sections according to different reaction temperature requirements, so that in a continuous reaction system, each section of reactor only needs to be simultaneously introduced with one cooling and heating medium, and only a single temperature control working condition needs to be met.

6. The product yield and purity. Many reactions must be stopped after completion of prescribed conditions and the reaction product immediately separated from the reaction system, otherwise the reaction product may decompose, destroy, produce more by-products or undergo complicated changes if the reaction is continued, thereby reducing the yield and reducing the quality of the product.

The larger the batch capacity in the traditional reaction kettle is, the more the reaction can not be stopped in time. The catalyst is immobilized in the reactor, and the raw materials are separated from the catalyst system to terminate the reaction, thereby effectively avoiding partial side reactions.

7. The safety production is advantageous. Most of the reaction is carried out under normal pressure in the traditional reaction kettle, and partial reaction needs pressurization to be carried out to improve the yield.

Often in order to meet the high temperature and high pressure in the synthetic route. The heat exchange efficiency is contrary to the safety production when the container is designed (the heat exchange efficiency is required to be greatly reduced in structure and wall thickness). In this case, the production operation is not strictly controlled, and explosion accidents are easily caused. The utility model discloses withstand voltage under the same material is far more than reation kettle. The potential safety hazard is fundamentally avoided by combining the heat transfer advantages.

8. The advantage of closed production (environmental protection advantage). Most of the traditional reaction kettles have working conditions under normal pressure, need to be opened and fed, and the like, produce products and byproducts in a reaction, and simultaneously produce a large amount of waste gas and waste liquid. Although the discharge to the atmosphere and the discharge of waste water are strictly controlled by environmental protection, the production personnel and the environment in a production workshop are greatly polluted.

The utility model discloses production and the full automatic operation of unmanned on duty among the reaction environment is totally airtight, also avoided waste gas to atmospheric pollution among the reaction process when greatly reduced the cost of labor.

9. Cost advantage. The consumption of raw material gas source is low: the nitrogen replacement dosage of the gas source is extremely low, and the emission of hydrogen and nitrogen can be ensured at minimum under the linkage control of the oxygen molecule detector and the hydrogen molecule detector.

The catalyst recovery rate is high: compared with a kettle type reaction process, the method adopts the principle of immobilized catalyst, does not need to repeatedly add and recycle, and does not use automatic nitrogen protection or water sealing of the system to prevent oxidation. The production loss rate is zero.

The stable operation does not need an operator: the operation process runs continuously, and corresponding parameters can be adjusted without human intervention compared with kettle type intermittent operation.

The reactor has the same capacity, which is less than one percent of the corresponding reaction kettle, thereby saving the equipment cost and greatly reducing the use area of a workshop.

Drawings

FIG. 1 is a schematic structural diagram of a continuous solid-supported multiphase reactor according to the present invention.

In the figure, the numbers are respectively represented as: 1-a discharge pipe; 2-discharge port end cover; 3-discharging port; 4-a discharge filter; 5-a reactor chamber; 6-liquid feed inlet; 7-liquid feed port end cap; 8-liquid feed pipe; 9-a liquid filter; 10-a gas filter; 11-gas feed pipe; 12-gas feed port end cap; 13-gas feed; 14-reactor barrel.

Detailed Description

Reactor barrel 14 embeds there is reactor cavity 5, reactor barrel 14's lower part and top are equipped with import and export, reactor barrel 14 have cavity of resorption and the epicoele of intercommunication, the cavity of resorption links to each other in the import, the cavity of resorption divide into left import and right import, can regard as gas feed inlet 13 and liquid feed inlet 6 respectively, the epicoele links to each other with discharge gate 3. The connected mode of importing and exporting is the connection of can dismantling, and the convenience is connected with the import and export pipeline of unidimensional model, and import and export pipeline can be separated with reactor barrel 14 through dismantling the connection, dismantles fast and installs, has the convertibility simultaneously, and the quick dismantlement of the whole reactor barrel 14 of being convenient for is changed, also makes things convenient for the washing of solid-supported catalyst to change in the reactor cavity 5. The filters are distributed at the inlet and outlet parts and are connected with the inlet and outlet pipelines, and the filters can be separated from the reactor cylinder 14 through the detachable connection of the inlet and outlet, so that the filters are convenient to clean and replace; the filter can be selected according to the characteristic appearance size of the solid catalyst and the macroscopic structure and the property of solid catalyst particles, the filtering capacity effect of the filter is switched at any time, and the normal, effective and quantitative heterogeneous catalytic reaction in the reactor is ensured.

The invention is further described with reference to the following figures and examples.

Referring to fig. 1, in particular, the present invention relates to a continuous solid-borne multiphase reactor, comprising a reactor cylinder 14 provided with a feed inlet and a discharge outlet 3.

The reactor comprises a reactor cylinder 14, a gas inlet 13 and a liquid inlet 6 are respectively arranged at the left end and the right end of the reactor cylinder 14, a discharge port 3 is arranged at the upper end of the reactor cylinder 14, a reactor cavity 5 which can be used for fixedly carrying a catalyst and has a smooth surface and no dead angle is arranged in the discharge port 3 of the reactor cylinder 14, and a gas filter 10, a liquid filter 9 and a discharge filter 4 are respectively and fixedly arranged in the gas inlet 13, the liquid inlet 6 and the discharge port 3.

Further, the gas filter 10 is fixedly connected with one end of a gas feeding pipe 11 through a screw thread, the gas feeding pipe 11 passes through and is fixedly connected with a gas feeding port end cover 12, and the gas feeding port end cover 12 is fixedly connected with a gas feeding port 13 through a screw thread.

The liquid filter 9 is fixedly connected with one end of a liquid feeding pipe 8 through threads, the liquid feeding pipe 8 penetrates through the liquid feeding port end cover 7 and is fixedly connected with the liquid feeding port end cover 7, and the liquid feeding port end cover 7 is fixedly connected with the liquid feeding port 6 through threads.

Discharging filter 4 passes through screw thread fixed connection with 1 one end of discharging pipe, and this discharging pipe 1 passes discharge gate end cover 2 and rather than fixed connection, and this discharge gate end cover 2 passes through screw thread fixed connection with discharge gate 3.

The pipe diameter of the discharge pipe 1 is larger than the pipe diameters of the gas feed pipe 11 and the liquid feed pipe 8.

The utility model discloses the during operation, get into gas filter 10 from gas inlet pipe 11 respectively as gas and liquid, and get into the lower cavity of reactor cavity 5 after getting into liquid filter 9 from liquid inlet pipe 8, earlier with the internal catalyst of cavity of resorption contact reaction, reactant in the fluid looks main part is transmitted to the catalyst on the surface, then react, reaction product also constantly transmits fluid looks main part from the catalyst surface, along with the continuous going on of reaction, gas and liquid climb slowly upwards, cavity operation slowly upwards, with the internal catalyst contact reaction of cavity of epicoele, when reaching certain pressure in reactor cavity 5, gas and liquid can get into the hole of ejection of compact filter 4 all around from the filter, and then get into in discharging pipe 1, in the reaction process catalyst can not get into the filter core of ejection of compact filter 4, always in reactor cavity 5, therefore, the catalyst can be ensured to be completely stayed in the reactor, and the reaction can be continuously and stably carried out all the time.

In addition, according to the reactor, can also install the thermometer on reactor cavity 5, can measure the temperature of reaction more accurately, make the condition of reaction more accurate reliable. And a jacket cavity can also be added to the reactor cavity 5, so that the reactor can be heated and cooled conveniently to reach the heating and cooling temperature required by the reaction.

The reactor of the utility model is mainly applied to the solid-supported catalyst or the consumption gas-liquid reaction, such as the hydrogenation reaction with hydrogen as the raw material; and (3) carrying out oxidation reaction by taking oxygen as a raw material.

The reactor realizes the final continuous reaction by greatly improving the reaction efficiency by increasing the reaction contact area and improving the reaction thermal power through high-pressure solid-supported catalyst or filler particles (mainly silicon carbide particles, glass particles and the like are selected according to reactants).

The present invention is not limited to the present embodiment, and for those skilled in the art, it is intended that the present invention shall not be limited to the embodiments, but the present invention shall be covered by the appended claims.

Claims (5)

1. The utility model provides a but in succession solid-borne type multiphase reactor, is including putting the reactor barrel of feed inlet and discharge gate, its characterized in that: the reactor comprises a reactor barrel, wherein a gas feed port and a liquid feed port are respectively arranged at the left end and the right end of the reactor barrel, a discharge port is arranged at the upper end of the reactor barrel, a reactor cavity which can carry a catalyst fixedly and has a smooth surface and no dead angle is arranged in the discharge port of the reactor barrel, and a gas filter, a liquid filter and a discharge filter are respectively fixedly arranged in the gas feed port, the liquid feed port and the discharge port.

2. The continuous, carryable multiphase reactor of claim 1, wherein: the gas filter is fixedly connected with one end of a gas inlet pipe through threads, the gas inlet pipe penetrates through a gas inlet end cover and is fixedly connected with the gas inlet end cover, and the gas inlet end cover is fixedly connected with a gas inlet through threads.

3. The continuous, carryable multiphase reactor of claim 1, wherein: the liquid filter is fixedly connected with one end of a liquid feeding pipe through threads, the liquid feeding pipe penetrates through a liquid feeding port end cover and is fixedly connected with the liquid feeding port end cover, and the liquid feeding port end cover is fixedly connected with the liquid feeding port through threads.

4. The continuous, carryable multiphase reactor of claim 1, wherein: the discharging filter is fixedly connected with one end of the discharging pipe through threads, the discharging pipe penetrates through the discharging port end cover and is fixedly connected with the discharging port end cover, and the discharging port end cover is fixedly connected with the discharging port through threads.

5. The continuous, loadable multi-phase reactor according to claim 4, characterized in that: the pipe diameter of the discharge pipe is larger than the pipe diameters of the gas feed pipe and the liquid feed pipe.

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