CN116943597A - Reactor for producing a catalyst - Google Patents
Reactor for producing a catalyst Download PDFInfo
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- CN116943597A CN116943597A CN202311125509.4A CN202311125509A CN116943597A CN 116943597 A CN116943597 A CN 116943597A CN 202311125509 A CN202311125509 A CN 202311125509A CN 116943597 A CN116943597 A CN 116943597A
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- feeding
- pipe
- heat exchange
- mixing
- mixing reaction
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- 239000003054 catalyst Substances 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 179
- 238000002156 mixing Methods 0.000 claims abstract description 133
- 239000000463 material Substances 0.000 claims abstract description 116
- 238000004891 communication Methods 0.000 claims abstract description 80
- 239000003507 refrigerant Substances 0.000 claims abstract description 58
- 238000012546 transfer Methods 0.000 claims abstract description 13
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- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 2
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- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
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- 239000004327 boric acid Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
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- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical group [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-M iodate Chemical compound [O-]I(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-M 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/0013—Controlling the temperature of the process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00085—Plates; Jackets; Cylinders
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The present application provides a reactor comprising: the feeding assembly comprises a first material inlet for introducing a first material and a second material inlet for introducing a second material, and is provided with a plurality of first communication channels and a plurality of second communication channels, wherein the first material inlet is communicated with the first communication channels, and the second material inlet is communicated with the second communication channels; the first communication channels and the second communication channels are communicated with the mixing reaction component, so that the first materials and the second materials form a mixed material in the mixing reaction component to perform chemical reaction; the heat exchange assembly is positioned at the outer sides of the plurality of mixed reaction components and is provided with a heat exchange cavity for introducing refrigerant, and the heat exchange assembly is connected with the plurality of mixed reaction components so as to exchange heat between the heat exchange assembly and the plurality of mixed reaction components. The application solves the problem of lower heat transfer efficiency of the reactor in the prior art.
Description
Technical Field
The application relates to the technical field of chemical industry, in particular to a reactor.
Background
In the process of the amplification production of chemical industry and medicine, especially the synthesis of organic chemicals, a reaction system comprises a large amount of highly corrosive, inflammable and explosive chemicals, and the reaction process has the characteristics of high reaction rate and serious heat release, and if the heat generated by the reaction cannot be removed in time, the safety accident is easily caused, so that the casualties are caused.
Specifically, the reactor device mainly comprises a kettle type reactor, a tubular reactor and a plate type reactor, wherein the technology of the kettle type reactor is mature, the operation flexibility is high, the reactor device is widely applied to the production process of reaction and heat exchange, however, the heat exchange of the kettle type reactor has obvious disadvantages, such as: the amplification effect is obvious, and adverse effects are also caused on the processes of three-transmission one-inversion and the like, so that the reaction effect is influenced.
Compared with the kettle type reactor, the tubular reactor and the plate type reactor have the characteristics of small size, large heat transfer area and plug flow, and are convenient for realizing the continuity of chemical reaction, so the tubular reactor and the plate type reactor are particularly suitable for strong exothermic reaction. The tubular reactor and the plate reactor are adopted to replace the kettle type reactor, so that the heat released by the reaction can be removed more rapidly, the reaction heat can not be accumulated, the safety of the production process can be realized conveniently, and in addition, the tubular reactor and the plate reactor are also favorable for accurate control of material flow rate, reaction temperature, and the like, so that the automation of control can be realized conveniently.
However, in the existing strong heat absorption/release reactor, the tubular reactor generally adopts a spiral coil, the inside of the spiral coil is a hollow pipe, the distributor distributes fluid in a seal head mode, two fluids are converged and enter one spiral coil, the heat transfer area of a single spiral coil is insufficient, the heat transfer efficiency between a reaction compound in the spiral coil and a refrigerant outside the spiral coil is easy to be low, and thus the reaction temperature of the tubular reactor is difficult to control, and the raw materials are excessive; likewise, plate reactors have the same problems.
Disclosure of Invention
The application mainly aims to provide a reactor to solve the problem of low heat transfer efficiency of the reactor in the prior art.
In order to achieve the above object, according to one aspect of the present application, there is provided a reactor comprising: the feeding assembly comprises a first material inlet for introducing a first material and a second material inlet for introducing a second material, and is provided with a plurality of first communication channels and a plurality of second communication channels, wherein the first material inlet is communicated with the first communication channels, and the second material inlet is communicated with the second communication channels; the first communication channels and the second communication channels are communicated with the mixing reaction component, so that the first materials and the second materials form mixed materials in the mixing reaction component, and the mixed materials undergo chemical reaction; the heat exchange assembly is positioned at the outer sides of the plurality of mixed reaction components and is provided with a heat exchange cavity for introducing refrigerant, and the heat exchange assembly is connected with the plurality of mixed reaction components so as to exchange heat between the heat exchange assembly and the plurality of mixed reaction components.
Further, each of the plurality of mixed reaction components includes: the mixing reaction pipes are sequentially bent; the first mixing bulges are arranged on the inner wall of the tube cavity of the mixing reaction tube, and the first mixing bulges are sequentially arranged along the flowing direction of the mixed materials.
Further, the heat exchange assembly includes: the shell is provided with a heat exchange cavity, and a plurality of mixed reaction components are all positioned in the heat exchange cavity; the shell is provided with a refrigerant inlet for introducing a refrigerant into the heat exchange cavity, so that the refrigerant is contacted with the outer walls of the mixing reaction pipes of the mixing reaction parts, and heat exchange is realized.
Further, the heat exchange assembly further comprises: the outer wall of the mixing reaction tube of each mixing reaction part is provided with at least one fin.
Further, the feed assembly includes: the first feeding component comprises a first main feeding pipe and a plurality of first feeding branch pipes, the first feeding branch pipes are communicated with the first main feeding pipe, a first pipe orifice of the first main feeding pipe is a first material inlet, and a pipe cavity of each first feeding branch pipe is a first communication channel; the second feeding component comprises a second main feeding pipe and a plurality of second feeding branch pipes, at least part of the second main feeding pipe is sleeved on the outer side of the first main feeding pipe, so that a second main feeding channel is formed in a space between the second main feeding pipe and the outer wall of the first main feeding pipe, the plurality of second feeding branch pipes are communicated with the second main feeding pipe, a second pipe orifice of each second main feeding pipe is a second material inlet, and a pipe cavity of each second feeding branch pipe is a second communication channel.
Further, the second main feed pipe comprises: the first feeding pipe section is sleeved on the first main feeding pipe and is connected with the outer wall of the first main feeding pipe; the second feeding pipe section is connected with the first feeding pipe section, the extending direction of the second feeding pipe section and the extending direction of the first feeding pipe section are arranged at a preset included angle, and one end of the second feeding pipe section, which is far away from the first feeding pipe section, is provided with a second pipe orifice.
Further, the plurality of first feeding branch pipes are provided with first communicating pipe sections, the plurality of second feeding branch pipes are provided with second communicating pipe sections, and the first communicating pipe sections are connected with the second communicating pipe sections so that the first materials and the second materials are intersected at the joint of the first communicating pipe sections and the second communicating pipe sections; wherein, be the setting of preset contained angle between first intercommunication pipeline section and the second intercommunication pipeline section.
Further, each of the plurality of mixed reaction components includes: the mixing reaction plate is internally provided with a runner, the runner comprises a mixing reaction runner section, and the mixing reaction runner sections are sequentially bent; the second mixing bulges are uniformly distributed in the mixing reaction flow passage section.
Further, the heat exchange assembly includes: a plurality of heat exchange plates, each heat exchange plate having a heat exchange cavity; the refrigerant feeding component is provided with a main refrigerant inlet and a plurality of refrigerant communication channels, and the plurality of refrigerant communication channels are communicated with the plurality of heat exchange plates in a one-to-one correspondence manner so as to introduce refrigerants into the heat exchange cavities of the heat exchange plates; the heat exchange plates and the mixed reaction plates of the mixed reaction components are sequentially staggered, so that the mixed reaction plates of the mixed reaction components are respectively contacted with the corresponding heat exchange plates to realize heat exchange.
Further, the feed assembly includes: the third feeding component is provided with a third main feeding pipe and a plurality of third feeding branch pipes, the plurality of third feeding branch pipes are all communicated with the third main feeding pipe, the pipe cavity of each third feeding branch pipe is a fourth feeding component of a first communication channel, the fourth feeding component is provided with a fourth main feeding pipe and a plurality of fourth feeding branch pipes, the plurality of fourth feeding branch pipes are all communicated with the fourth main feeding pipe, and the pipe cavity of each fourth feeding branch pipe is a second communication channel; wherein, third feeding part and fourth feeding part set up respectively in the both sides of mixing reaction board.
By applying the technical scheme of the application, the application provides a reactor, which comprises the following components: the feeding assembly comprises a first material inlet for introducing a first material and a second material inlet for introducing a second material, and is provided with a plurality of first communication channels and a plurality of second communication channels, wherein the first material inlet is communicated with the first communication channels, and the second material inlet is communicated with the second communication channels; the first communication channels and the second communication channels are communicated with the mixing reaction component, so that the first materials and the second materials form mixed materials in the mixing reaction component, and the mixed materials undergo chemical reaction; the heat exchange assembly is positioned at the outer sides of the plurality of mixed reaction components and is provided with a heat exchange cavity for introducing refrigerant, and the heat exchange assembly is connected with the plurality of mixed reaction components so as to exchange heat between the heat exchange assembly and the plurality of mixed reaction components. Through above-mentioned setting, heat transfer subassembly can carry out the heat transfer with a plurality of mixed reaction parts simultaneously, like this, has increased the heat transfer area between heat transfer subassembly and the mixed reaction part, has guaranteed the heat exchange efficiency between heat transfer subassembly and the mixed reaction part to the reaction temperature in the mixed reaction part of solution reactor is difficult to control, and the raw materials is remaining many problem.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:
FIG. 1 shows a schematic structural view of a mixing reaction tube inside a shell of a first embodiment of a reactor according to the present application;
FIG. 2 shows a cross-sectional view of a first embodiment of a reactor according to the application;
FIG. 3 shows a schematic view of the appearance of a first embodiment of a reactor according to the application;
FIG. 4 shows a schematic view of the appearance of a second embodiment of a reactor according to the application;
FIG. 5 shows a side view of a second embodiment of a reactor according to the application;
FIG. 6 shows a schematic structural view of a section B-B of the reactor according to FIG. 5;
FIG. 7 shows a schematic structural view of section A-A of the reactor according to FIG. 5;
FIG. 8 shows a cross-section of a third or fourth feed section of a second embodiment of a reactor according to the application;
FIG. 9 shows a cross-sectional view of a refrigerant feed section of a second embodiment of a reactor according to the present application;
FIG. 10 shows a schematic structural view of a mixing reaction tube according to a first embodiment of the reactor of the present application;
FIG. 11 shows a schematic simulation of a first embodiment of a reactor according to the application;
fig. 12 shows a schematic simulation of a second embodiment of a reactor according to the application.
Wherein the above figures include the following reference numerals:
1. a feed assembly; 101. a first material inlet; 102. a second material inlet; 103. a material outlet; 110. a first communication passage; 120. a second communication passage; 11. a first feed member; 111. a first main feed pipe; 112. a first feed sub-pipe; 12. a second feed member; 121. a second main feed tube; 122. a second feed sub-tube; 1211. a first feed pipe section; 1212. a second feed pipe section; 1120. a first communicating tube section; 1220. a second communicating tube section; 13. a third feed member; 131. a third main feed tube; 132. a third feeding branch pipe; 14. a fourth feed member; 141. a fourth main feed tube; 142. a fourth feeding branch pipe; 15. a discharge member;
2. a mixing reaction part; 20. a mixing reaction tube; 21. a first mixing protrusion; 22. a mixing reaction plate; 220. a flow passage; 221. a mixed reaction flow channel section; 23. a second mixing protrusion;
3. a heat exchange assembly; 300. a heat exchange cavity; 30. a housing; 301. a refrigerant inlet; 302. a refrigerant outlet; 31. a fin; 32. a heat exchange plate; 33. a refrigerant feeding part; 330. a main refrigerant inlet; 331. a refrigerant communication passage; 34. and a refrigerant discharging part.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1 to 10, the present application provides a reactor, comprising: a feed assembly 1, the feed assembly 1 comprising a first material inlet 101 for introducing a first material and a second material inlet 102 for introducing a second material, the feed assembly 1 having a plurality of first communication channels 110 and a plurality of second communication channels 120, the first material inlet 101 being in communication with the plurality of first communication channels 110, the second material inlet 102 being in communication with the plurality of second communication channels 120; a plurality of mixing and reacting components 2, a plurality of first communication channels 110 and a plurality of second communication channels 120 are communicated with the mixing and reacting components 2, so that the first materials and the second materials form a mixed material in the mixing and reacting components 2, and the mixed material is subjected to chemical reaction; the heat exchange assembly 3, the heat exchange assembly 3 is located the outside of a plurality of mixed reaction parts 2, and the heat exchange assembly 3 has the heat exchange cavity 300 that is used for letting in the refrigerant, and the heat exchange assembly 3 is connected with a plurality of mixed reaction parts 2 to make the heat exchange between heat exchange assembly 3 and a plurality of mixed reaction parts 2. Through the arrangement, the heat exchange assembly 3 can exchange heat with a plurality of mixed reaction components 2 simultaneously, so that the heat exchange area between the heat exchange assembly 3 and the mixed reaction components 2 is increased, the heat exchange efficiency between the heat exchange assembly 3 and the mixed reaction components 2 is ensured, and the problems that the reaction temperature in the mixed reaction components 2 of the reactor is difficult to control and the raw materials remain much are solved.
Alternatively, the number of the mixing reaction parts 2 is 3 to 20, and the number of the mixing reaction parts 2 may be selected according to actual circumstances.
In the embodiment of the present application, the number of the mixing reaction parts 2 is 10.
In a first embodiment of the present application, as shown in fig. 1 to 3, the reactor is a tubular reactor, and the plurality of mixed reaction parts 2 each include: the mixing reaction pipes 20, wherein the mixing reaction pipes 20 are sequentially bent; the first mixing protrusions 21 are disposed on the inner wall of the tube cavity of the mixing reaction tube 20, and the first mixing protrusions 21 are sequentially disposed along the flowing direction of the mixed material, so that resistance is provided to the flowing of the mixed material by the first mixing protrusions 21, and the mixed material is fully mixed.
In order to increase the heat exchange area of the heat exchange assembly 3, in the first embodiment of the present application, the heat exchange assembly 3 includes: the shell 30, the shell 30 has heat exchange cavity 300, a plurality of mixing reaction parts 2 are all located in heat exchange cavity 300; the casing 30 is provided with a refrigerant inlet 301 to introduce a refrigerant into the heat exchange cavity 300, so that the refrigerant contacts with the outer walls of the mixing reaction tubes 20 of the mixing reaction components 2 to exchange heat.
Specifically, the housing 30 is provided with a refrigerant outlet 302, which communicates with the heat exchange cavity 300 of the housing 30.
In order to further increase the heat exchange area of the mixing reaction tube of each mixing reaction part 2 and ensure the heat exchange efficiency, the heat exchange assembly 3 further comprises: a plurality of fins 31, at least one fin 31 is provided on the outer wall of the mixing reaction tube 20 of each mixing reaction part 2.
Specifically, the dimensions of the fins are: the value range of the fin height is 2mm to 10mm, the value range of the screw pitch is 10mm to 20mm, the value range of the thickness is 0.5mm to 2mm, and the value range of the inclination angle between the protruding direction of the fin and the axis of the mixing reaction tube is 0 to 45 degrees.
As shown in fig. 2, the feed assembly 1 includes: the first feeding part 11, the first feeding part 11 comprises a first main feeding pipe 111 and a plurality of first feeding branch pipes 112, the plurality of first feeding branch pipes 112 are communicated with the first main feeding pipe 111, a first pipe mouth of the first main feeding pipe 111 is a first material inlet 101, and a pipe cavity of each first feeding branch pipe 112 is a first communication channel 110; the second feeding component 12, the second feeding component 12 comprises a second main feeding pipe 121 and a plurality of second feeding branch pipes 122, at least part of the second main feeding pipe 121 is sleeved outside the first main feeding pipe 111, so that a space between the second main feeding pipe 121 and the outer wall of the first main feeding pipe 111 forms a second main feeding channel, the plurality of second feeding branch pipes 122 are communicated with the second main feeding pipe 121, a second pipe orifice of the second main feeding pipe 121 is a second material inlet 102, and a pipe cavity of each second feeding branch pipe 122 is a second communicating channel 120. By the arrangement, the structure between the first feeding part and the second feeding part can be compact.
Specifically, the second main feed pipe 121 includes: a first feeding pipe section 1211, the first feeding pipe section 1211 being sleeved on the first main feeding pipe 111 and connected to the outer wall of the first main feeding pipe 111; the second feeding pipe section 1212, the second feeding pipe section 1212 is connected to the first feeding pipe section 1211, the extending direction of the second feeding pipe section 1212 and the extending direction of the first feeding pipe section 1211 are set at a preset included angle, and the end of the second feeding pipe section 1212 far from the first feeding pipe section 1211 has a second pipe orifice. With the above arrangement, the first material and the second material are not easy to interfere with each other in the process that the first material enters through the first nozzle of the first main feeding pipe 111 and the second material enters from the second nozzle.
As shown in fig. 2, the plurality of first feed sub-pipes 112 each have a first communication pipe section 1120, the plurality of second feed sub-pipes 122 each have a second communication pipe section 1220, and the first communication pipe sections 1120 are connected to the second communication pipe sections 1220 such that the first material and the second material meet at the junction of the first communication pipe sections 1120 and the second communication pipe sections 1220; wherein, the first communication pipe segment 1120 and the second communication pipe segment 1220 are disposed at a predetermined included angle.
In an embodiment of the present application, the first communication pipe segment 1120 and the second communication pipe segment 1220 are disposed at a 90 ° angle therebetween.
Specifically, a plurality of second feed sub-tubes 122 are spaced around the first feed member; the plurality of mixing and reacting parts 2 are connected with the plurality of second feeding branch pipes 122 in a one-to-one correspondence; the housing 30 has a cylindrical shape, and the mixing reaction tubes 20 of the respective mixing reaction parts 2 are sequentially bent in the radial direction of the housing 30.
Specifically, in the radial direction of the housing 30, the mixing reaction tube 20 of each mixing reaction part 2 has a plurality of curved tube sections and a plurality of mixing tube sections arranged in parallel, and two adjacent mixing tube sections are connected by a curved tube section; wherein, each mixing pipe section is provided with at least one fin; a first mixing projection 21 is provided in each mixing tube section.
Specifically, the reactor includes a discharge pipe connected to the housing 30, the discharge pipe having a material outlet 103, the material outlet 103 being in communication with the mixing reaction pipes 20 of the plurality of mixing reaction parts 2 such that the mixed material after the mixing reaction through the mixing reaction pipes of the respective mixing reaction parts 2 flows out through the material outlet 103.
Specifically, the mixing reaction tube 20 of each mixing reaction part 2 includes a first tube section and a second tube section connected to each other, the tube diameter of the first tube section being smaller than the tube diameter of the second tube section; the first pipe section and the second pipe section are sequentially arranged along the flowing direction of the mixed materials.
In the implementation of the first embodiment of the present application, the first material and the second material meet (form an included angle of 90 °) at the connection point between the first communicating pipe section 1120 and the second communicating pipe section 1220, and the first material and the second material after the intersection perform slight heat release, and at the same time, the first material and the second material form a mixed material, and the mixed material continuously flows downward, passes through the first mixing protrusion 21 in the mixing reaction pipe 20, and the first material and the second material are fully mixed for mass transfer reaction, are fully mixed in the mixing reaction pipe 20, instantaneously release a large amount of heat, and the generated heat is transferred into the refrigerant of the shell 30 through the pipe wall and the fins 31 of the mixing reaction pipe 20, and the mixed material continuously flows in the mixing reaction pipe 20 until flowing out from the mixing reaction pipe 20 and meeting at the material outlet 103 at the bottom of the reactor. The design fully considers the material beating flow and the liquid holdup of the reactor, so as to ensure the enough residence time of the materials in the reactor, prolong the reaction time and enhance the heat exchange efficiency.
Alternatively, in a tubular reactor, the diameter of the shell 30 may range from 50mm to 800mm and the height of the shell 30 may range from 60mm to 800mm.
Alternatively, the diameter of the mixing reaction tube 20 may take a value in the range of 1mm to 20mm.
In the first embodiment of the application, after the feeding pipe (the feeding component 1) enters the cylinder, the feeding pipe is divided into 10 feeding branch pipes (comprising a first feeding branch pipe 112 and a second feeding branch pipe 122), the first feeding branch pipe 112 and the second feeding branch pipe 122 are communicated with the mixed reaction pipe 20 after being crossed and converged, a static mixer is arranged inside the mixed reaction pipe, the mixed reaction pipe is distributed in three layers, the processing mode is metal 3D printing, the printing is performed by adopting a Selective Laser Melting (SLM) mode, the pretreatment is required in the early stage, the treatment is performed by Magics software, the processing time is about 100 hours, the post-treatment processes such as powder cleaning, fishing, heat treatment, wire cutting, support removing, polishing, X-ray detection and the like are required in the later stage, the mixed reaction pipe and the shell are made of the same materials, and the mixed reaction pipe and the shell are made of metal materials, and the metal materials are optionally stainless steel, titanium alloy or hastelloy and the like. Wherein each of the mixing reaction tubes 20 is sequentially bent such that each of the mixing reaction tubes 20 includes a plurality of vertical tube sections distributed along a radial direction of the housing 30; wherein, the static mixer is distributed in three layers, which means that: each mixing reactor tube 20 comprises three vertical tube sections distributed in the radial direction of the housing 30.
In a second embodiment of the present application, as shown in fig. 4 to 9, the reactor is a plate reactor, and the plurality of mixing reaction parts 2 each include: the mixed reaction plate 22, the mixed reaction plate 22 is internally provided with a runner 220, the runner 220 comprises a mixed reaction runner section 221, and the mixed reaction runner sections 221 are sequentially and flexibly arranged; the second mixing protrusions 23 are uniformly distributed in the mixing reaction channel section 221.
The working principle of the plate reactor is similar to that of the tubular reactor, and the difference is that the tubular reactor transfers heat through the pipe wall, and the refrigerant in the jacket has no distribution structure; and the heat of the plate reactor is transferred through the thin wall surface of the plate, so that the heat exchange area is larger.
In order to achieve an increase in the heat exchange area of the plurality of hybrid reaction components 2, the heat exchange assembly 3 comprises: a plurality of heat exchange plates 32, each heat exchange plate 32 having a heat exchange cavity 300; the refrigerant feeding part 33, the refrigerant feeding part 33 is provided with a main refrigerant inlet 330 and a plurality of refrigerant communication channels 331, and the plurality of refrigerant communication channels 331 are communicated with the plurality of heat exchange plates 32 in a one-to-one correspondence manner so as to introduce refrigerant into the heat exchange cavities 300 of the heat exchange plates 32; the heat exchange plates 32 are sequentially staggered with the mixing reaction plates 22 of the mixing reaction parts 2, so that the mixing reaction plates 22 of each mixing reaction part 2 are respectively contacted with the corresponding heat exchange plates 32 to realize heat exchange.
As shown in fig. 9, the refrigerant feeding part 33 includes a plurality of partition plates, and the refrigerant feeding part 33 has a refrigerant feeding chamber communicating with the main refrigerant inlet 330, and the plurality of partition plates are disposed in the refrigerant feeding chamber at intervals to partition the refrigerant feeding chamber into a plurality of refrigerant communication passages 331.
As shown in fig. 8, the feed assembly 1 includes: a third feeding part 13, the third feeding part 13 having a third main feeding pipe 131 and a plurality of third feeding branch pipes 132, the plurality of third feeding branch pipes 132 each communicating with the third main feeding pipe 131, the lumen of each third feeding branch pipe 132 being a first communicating channel 110 and a fourth feeding part 14, the fourth feeding part 14 having a fourth main feeding pipe 141 and a plurality of fourth feeding branch pipes 142, the plurality of fourth feeding branch pipes 142 each communicating with the fourth main feeding pipe 141, the lumen of each fourth feeding branch pipe 142 being a second communicating channel 120; wherein the third feeding part 13 and the fourth feeding part 14 are respectively disposed at both sides of the mixing reaction plate 22.
In one heat exchange plate 32, as shown in fig. 6, the axis of the first communication passage 110 and the axis of the second communication passage 120 coincide.
In a second embodiment of the present application, the reactor further comprises a discharge part 15 and a refrigerant discharge part 34, wherein a third pipe orifice of the discharge part 15 is a material outlet, and the discharge part is communicated with the mixing reaction plates 22 of the plurality of mixing reaction parts 2, so that the mixed materials after being mixed and reacted by the mixing reaction plates 22 of the respective mixing reaction parts 2 flow out through the material outlet of the discharge part 15. Wherein the discharging part 15 has the same structure as the third feeding part and the fourth feeding part; the refrigerant discharge part 34 has the same structure as the refrigerant feed part 33.
In the present application, the number of mixing reaction plates 22 is N and the number of heat exchange plates 32 is N+1.
In the second embodiment of the present application, the number of heat exchange plates 32 is 11, and the number of mixing reaction plates 22 is 10.
Optionally, in the plate reactor, the plate reactor has overall dimensions of: the length of the plate reactor is in the range of 60mm to 800mm; the value range of the width of the plate reactor is 60mm to 800mm; the thickness of the plate reactor ranges from 30mm to 700mm.
The dimensions of the individual mixing reaction plates 22 and the individual heat exchanger plates 32 may be selected in accordance with the specific conditions of the actual test, depending on the overall dimensions of the plate reactor.
In the second embodiment of the present application, the third feeding part 13 and the fourth feeding part 14 are respectively provided with 10 feeding channels, so that materials respectively enter 10 mixing reaction plates 22 and then are converged, the refrigerant feeding part 33 is divided into 11 refrigerant communication channels 331, so that refrigerants respectively enter 11 heat exchange plates 32 and then are converged, the processing mode is metal 3D printing, the printing is performed by adopting a mode of Selective Laser Melting (SLM), the pretreatment is required in the early stage, the treatment is performed by adopting Magics software, the processing time is about 100 hours, the post-treatment processes such as powder cleaning, fishing, heat treatment, wire cutting, supporting, polishing, X-ray detection and the like are required in the later stage, and the whole plate reactor is made of metal materials, optionally, the metal materials comprise stainless steel, titanium alloy or hastelloy and other metal materials. The length direction of the plate reactor is the same as the feeding direction of the refrigerant feeding part 33 in fig. 4.
As shown in fig. 11 and 12, the simulation process of the tubular reactor and the plate reactor is as follows:
the model uses water (materials) for simulation, a laminar steady-state model is adopted for calculation, the two inlet flows are 970ml/min, and the liquid phase is incompressible fluid, so that specific feeding parameters are shown in the following table;
table 1 first example: feed data in a mixing reactor tube
As shown in fig. 11, red indicates that the flow rate is maximum, green indicates that the flow rate is medium, and blue indicates that the flow rate is minimum; it can be seen that the flow rate of the pipe section with a pipe diameter of 5mm is maximum.
Table 2 first example: data obtained by CFD numerical simulation of the mixing reactor tube
In table 2, in1 to in10 represent: feed data for 10 first feed branches 112; in11 to in20 represent the feed data of 10 second feed sub-pipes 122.
Simulation results:
in the tubular reactor, the theoretical average speed of the second tube section of the first tube section is 0.165m/s (the flow rate in the first tube section) and 0.064m/s (the flow rate of the second tube section), the simulation result is 0.155-0.185m/s and 0.054-0.085m/s, and the difference between the theoretical flow rate and the simulation flow rate is small; wherein, the theoretical value of the mass flow rate of the feeding pipe is 16.18g/s, the simulated average flow rate of the mixing reaction pipe 20 is 1.618g/s, the simulation result is shown in Table 2, the deviation is-3.23% to 2.46%, and the deviation is small.
In the plate reactor, the velocity field in the heat exchanger plate 32 is shown in fig. 12, and the blue region with smaller velocity is the "dead zone", i.e. the flow velocity in the blue region is slower, wherein the "dead zone" area is not large, indicating that the fluidity of the refrigerant in the heat exchanger plate 32 is better.
The following chemical experiments were carried out using the tubular reactor of the first example of the present application:
the Villermaux-Du shman reaction system (iodide and iodate reaction system) is Fournier et al [91-92] The parallel competition reaction system proposed in 1996 consists of an acid-base neutralization reaction (instantaneous completion) and an oxidation reaction (rapid completion), based on the parallel competition reactions shown in reaction equations (1.2), (1.3) and (1.4):
the reactant concentrations are shown in the following table:
material a was tested using potassium iodide, sodium hydroxide, potassium iodate, boric acid, material B was tested using dilute sulfuric acid at an inlet flow rate of 1400ml/min, respectively, and material a and material B entered the mixing reaction tube 20 through the first feed section 11 and the second feed section 12 of the feed assembly 1 of the present application, respectively, and an off-set index was calculated according to the following formula to evaluate mixing performance by the off-set index:
the iodine concentration is obtained by the balance calculation of the materialsThe following values are usedThe separation index Xs can be calculated by formulas (3.8), (3.9) and (3.10), and the separation index Xs is used for evaluating the micromixing efficiency of the reactor:
wherein:
V A is composed ofAnd I - Volume flow of solution, unit L/h;
V B is H-containing + Volume flow of solution, unit L/h;
for I formed in the reaction 2 Concentration of simple substance, unit mol/L;
is triiodide anion +.>Concentration in mol/L;
containing H as initial solution + Concentration in mol/L;
for the initial solution containing->Concentration in mol/L;
for the initial solution containing->Concentration in mol/L;
nI 2 the amount of material that is iodine generated;
nI 3 - for generating triiodide anion I 3 - The amount of the substance of (a);
nH 0 + for hydrogen ions H in the initial solution + The amount of the substance of (a);
y is hydrogen ion (H) consumed in the course of the reaction of the above reaction formula (1.3) + ) The ratio of the amount of material to the total amount of material added to the hydrogen ions, wherein the smaller the Y value, the better the degree of micromixing of the reactor;
Y ST the value is the value of Xs in the completely isolated state, i.e. H is added + All used in reaction formula (1.3) without H 3 BO 3 Is generated.
Experimental results:
1. the value of the dissociation index is between 0 and 1, when xs=1, the mixing effect is the worst for complete dissociation; when xs=0, an ideal complete mixing state is obtained. The closer Xs to 0, the better the micromixing effect.
2. The reaction is a fast reaction, the higher the flow rate is, the higher the mixing efficiency is, the better the effect is, the ideal separation index which can be achieved by the micro-channel mixer is 0.003-0.004, and the separation index of conventional stirring and mixing is 0.1-0.17;
3. in the mixing reaction tube of the present application, the segregation index of the tube reactor when the above experiment was performed was 0.042, which is significantly lower than that of conventional stirring and mixing, at a flow rate of 1400ml/min, and therefore, the mixing performance of the tube reactor of the present application was stronger than that of conventional stirring.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
the present application provides a reactor comprising: a feed assembly 1, the feed assembly 1 comprising a first material inlet 101 for introducing a first material and a second material inlet 102 for introducing a second material, the feed assembly 1 having a plurality of first communication channels 110 and a plurality of second communication channels 120, the first material inlet 101 being in communication with the plurality of first communication channels 110, the second material inlet 102 being in communication with the plurality of second communication channels 120; a plurality of mixing and reacting components 2, a plurality of first communication channels 110 and a plurality of second communication channels 120 are communicated with the mixing and reacting components 2, so that the first materials and the second materials form a mixed material in the mixing and reacting components 2, and the mixed material is subjected to chemical reaction; the heat exchange assembly 3, the heat exchange assembly 3 is located the outside of a plurality of mixed reaction parts 2, and the heat exchange assembly 3 has the heat exchange cavity 300 that is used for letting in the refrigerant, and the heat exchange assembly 3 is connected with a plurality of mixed reaction parts 2 to make the heat exchange between heat exchange assembly 3 and a plurality of mixed reaction parts 2. Through the arrangement, the heat exchange assembly 3 can exchange heat with a plurality of mixed reaction components 2 simultaneously, so that the heat exchange area between the heat exchange assembly 3 and the mixed reaction components 2 is increased, the heat exchange efficiency between the heat exchange assembly 3 and the mixed reaction components 2 is ensured, and the problems that the reaction temperature in the mixed reaction components 2 of the reactor is difficult to control and the raw materials remain much are solved.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A reactor, comprising:
a feed assembly (1), the feed assembly (1) comprising a first material inlet (101) for feeding a first material and a second material inlet (102) for feeding a second material, the feed assembly (1) having a plurality of first communication channels (110) and a plurality of second communication channels (120), the first material inlet (101) being in communication with a plurality of the first communication channels (110), the second material inlet (102) being in communication with a plurality of the second communication channels (120);
a plurality of mixing reaction parts (2), wherein a plurality of first communication channels (110) and a plurality of second communication channels (120) are communicated with the mixing reaction parts (2) so that the first materials and the second materials form a mixed material in the mixing reaction parts (2) and perform chemical reaction;
the heat exchange assembly (3), the heat exchange assembly (3) is located a plurality of the outside of mixing reaction part (2), heat exchange assembly (3) have be used for letting in heat transfer cavity (300) of refrigerant, heat exchange assembly (3) with a plurality of mixing reaction part (2) are connected, so that heat transfer is carried out between heat exchange assembly (3) and a plurality of mixing reaction part (2).
2. The reactor according to claim 1, wherein a plurality of said mixing reaction components (2) each comprise:
the mixing reaction tube (20), the said mixing reaction tube (20) is crooked to set up sequentially;
the mixing reaction tube comprises a plurality of first mixing bulges (21), wherein the first mixing bulges (21) are arranged on the inner wall of a tube cavity of the mixing reaction tube (20), and the first mixing bulges (21) are sequentially arranged along the flowing direction of the mixed materials.
3. The reactor according to claim 2, wherein the heat exchange assembly (3) comprises:
-a housing (30), said housing (30) having said heat exchange cavity (300), a plurality of said mixing reaction components (2) being located within said heat exchange cavity (300);
the shell (30) is provided with a refrigerant inlet (301) so as to introduce the refrigerant into the heat exchange cavity (300), so that the refrigerant is in contact with the outer walls of the mixing reaction pipes (20) of the plurality of mixing reaction parts (2) to realize heat exchange.
4. A reactor according to claim 3, wherein the heat exchange assembly (3) further comprises:
and a plurality of fins (31), wherein at least one fin (31) is arranged on the outer wall of the mixing reaction tube (20) of each mixing reaction component (2).
5. Reactor according to claim 2, characterized in that the feed assembly (1) comprises:
the first feeding component (11), the first feeding component (11) comprises a first main feeding pipe (111) and a plurality of first feeding branch pipes (112), the first feeding branch pipes (112) are communicated with the first main feeding pipe (111), a first pipe orifice of the first main feeding pipe (111) is the first material inlet (101), and a pipe cavity of each first feeding branch pipe (112) is the first communication channel (110);
the second feeding component (12), second feeding component (12) include second owner inlet pipe (121) and a plurality of second feeding are in charge of pipe (122), the outside of first owner inlet pipe (111) is established to at least part cover of second owner inlet pipe (121), so that second owner inlet pipe (121) with space between the outer wall of first owner inlet pipe (111) forms second owner feed channel, a plurality of second feeding are in charge of pipe (122) all with second owner inlet pipe (121) intercommunication, the second mouth of pipe of second owner inlet pipe (121) is second material import (102), each second feeding is in charge of pipe (122) lumen be second intercommunication passageway (120).
6. The reactor according to claim 5, characterized in that the second main feed pipe (121) comprises:
a first feeding pipe section (1211), wherein the first feeding pipe section (1211) is sleeved on the first main feeding pipe (111) and is connected with the outer wall of the first main feeding pipe (111);
the second feeding pipe section (1212), the second feeding pipe section (1212) is connected with the first feeding pipe section (1211), the extending direction of the second feeding pipe section (1212) and the extending direction of the first feeding pipe section (1211) form a preset included angle, and one end of the second feeding pipe section (1212) far away from the first feeding pipe section (1211) is provided with the second pipe orifice.
7. A reactor according to claim 5, wherein,
a plurality of the first feed sub-pipes (112) each have a first communication pipe section (1120), a plurality of the second feed sub-pipes (122) each have a second communication pipe section (1220), the first communication pipe sections (1120) are connected to the second communication pipe sections (1220) such that the first material and the second material meet at the junction of the first communication pipe sections (1120) and the second communication pipe sections (1220);
wherein, the first communicating pipe section (1120) and the second communicating pipe section (1220) are arranged at a preset included angle.
8. The reactor according to claim 1, wherein a plurality of said mixing reaction components (2) each comprise:
the device comprises a mixing reaction plate (22), wherein a flow channel (220) is arranged in the mixing reaction plate (22), the flow channel (220) comprises a mixing reaction flow channel section (221), and the mixing reaction flow channel sections (221) are sequentially and flexibly arranged;
a plurality of second mixing protrusions (23), wherein the plurality of second mixing protrusions (23) are uniformly distributed in the mixing reaction flow channel section (221).
9. The reactor according to claim 8, wherein the heat exchange assembly (3) comprises:
-a plurality of heat exchange plates (32), each of said heat exchange plates (32) having said heat exchange cavity (300);
a refrigerant feeding part (33), wherein the refrigerant feeding part (33) is provided with a main refrigerant inlet (330) and a plurality of refrigerant communication channels (331), and the refrigerant communication channels (331) are communicated with the heat exchange plates (32) in a one-to-one correspondence manner so as to introduce the refrigerant into the heat exchange cavities (300) of the heat exchange plates (32);
the heat exchange plates (32) and the mixed reaction plates (22) of the mixed reaction parts (2) are sequentially staggered, so that the mixed reaction plates (22) of the mixed reaction parts (2) are respectively contacted with the corresponding heat exchange plates (32) to realize heat exchange.
10. The reactor according to claim 8, wherein the feed assembly (1) comprises:
a third feeding part (13), wherein the third feeding part (13) is provided with a third main feeding pipe (131) and a plurality of third feeding branch pipes (132), the third feeding branch pipes (132) are communicated with the third main feeding pipe (131), and the pipe cavity of each third feeding branch pipe (132) is the first communication channel (110)
A fourth feeding part (14), wherein the fourth feeding part (14) is provided with a fourth main feeding pipe (141) and a plurality of fourth feeding branch pipes (142), the fourth feeding branch pipes (142) are communicated with the fourth main feeding pipe (141), and the pipe cavity of each fourth feeding branch pipe (142) is the second communication channel (120);
wherein the third feeding part (13) and the fourth feeding part (14) are respectively arranged at two sides of the mixing reaction plate (22).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311125509.4A CN116943597A (en) | 2023-08-31 | 2023-08-31 | Reactor for producing a catalyst |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311125509.4A CN116943597A (en) | 2023-08-31 | 2023-08-31 | Reactor for producing a catalyst |
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