CN116510657A - High-efficient esterification reaction kettle for preparing ethyl formate - Google Patents
High-efficient esterification reaction kettle for preparing ethyl formate Download PDFInfo
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- CN116510657A CN116510657A CN202310426249.8A CN202310426249A CN116510657A CN 116510657 A CN116510657 A CN 116510657A CN 202310426249 A CN202310426249 A CN 202310426249A CN 116510657 A CN116510657 A CN 116510657A
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- China
- Prior art keywords
- pipe
- kettle body
- ethyl formate
- heat transfer
- central shaft
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Links
- 238000005886 esterification reaction Methods 0.000 title claims abstract description 35
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 title claims abstract description 32
- WBJINCZRORDGAQ-UHFFFAOYSA-N formic acid ethyl ester Natural products CCOC=O WBJINCZRORDGAQ-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000003507 refrigerant Substances 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims description 38
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 230000032050 esterification Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 description 43
- 238000006243 chemical reaction Methods 0.000 description 27
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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
- B01J19/18—Stationary reactors having 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
- B01J19/0066—Stirrers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
-
- 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
- B01J2219/00081—Tubes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a high-efficiency esterification reaction kettle for preparing ethyl formate, which comprises a kettle body, a central shaft and a motor, wherein the top of the kettle body is provided with a feed inlet, the bottom of the kettle body is provided with a discharge outlet, the central shaft is arranged in the kettle body and is rotationally connected with the kettle body, the bottom end of the central shaft penetrates through the kettle body and is fixedly connected with the output end of the motor, the top of the central shaft is provided with a buffer cylinder, a flow passage is arranged in the central shaft, a plurality of groups of heat transfer pipes which are arranged at equal intervals are arranged outside the central shaft, one end of each heat transfer pipe is communicated with the flow passage, the other end of each heat transfer pipe is communicated with the buffer cylinder, the top of the buffer cylinder is provided with a sealing plate, the top of the sealing plate is provided with an output pipe and an input pipe, the output pipe is communicated with the flow passage, the input pipe is communicated with the buffer cylinder, the input end of the input pipe is provided with a three-way pipe, the input pipe is connected with a refrigerant pipe and a heating medium pipe through the three-way, and valves for controlling the opening and closing of the pipes are arranged on the output pipe, the refrigerant pipe and the heating medium pipe. The efficient esterification reaction kettle for preparing ethyl formate has good heat conductivity and high production efficiency.
Description
Technical Field
The invention relates to an efficient esterification reaction kettle for preparing ethyl formate, and belongs to the technical field of esterification reaction kettles.
Background
Ethyl formate is an important organic solvent and organic synthesis intermediate, can be used for pharmacy, the method of the common synthetic ethyl formate adopts sulfuric acid as catalyst, by formic acid and ethanol chemical reaction, the chemical industry produces ethyl formate and generally utilizes the reaction kettle as the reaction vessel to produce.
In the prior art, the heating and cooling of the reaction kettle generally adopts a jacket, a coil pipe and other structures, and the heat transfer structure can meet most of chemical production requirements. However, because the heat transfer structure is single, the heat source transfers heat with reactants by the inner wall of the reaction kettle, the heat transfer between the reactants and the heat source is not direct, the heat transfer of the reactants positioned in the center of the reaction kettle is usually slow, the time for heating and cooling materials is longer, and the production of chemical products, particularly fine chemicals, is usually carried out in an intermittent production mode, so that the production efficiency is low and the equipment utilization rate is not high due to the heat transfer structure. Particularly, the esterification reaction is carried out at a higher reaction temperature, the temperature of the material is increased from room temperature to the reaction temperature, and the temperature of the material is reduced from the reaction temperature to the temperature capable of discharging, so that a great deal of time is consumed, and the production efficiency is seriously affected.
Disclosure of Invention
The invention aims to solve the technical problem of providing the efficient esterification reaction kettle for preparing ethyl formate, which has good heat conductivity and high production efficiency.
The invention provides a technical scheme for solving the technical problems, which is as follows: the utility model provides an ethyl formate is high-efficient esterification reaction cauldron for preparation, includes the cauldron body, center pin and motor, cauldron body top is equipped with the feed inlet, cauldron body bottom is equipped with the discharge gate, the center pin is established in the cauldron body and with the cauldron body rotates to be connected, the bottom of center pin runs through the cauldron body and with motor output fixed connection, the center pin top is equipped with the buffer tube, the runner has been seted up in the center pin, the center pin outer wall is equipped with equidistant multiunit heat transfer pipe that sets up, heat transfer pipe one end is linked together with the runner, the other end and the buffer tube of heat transfer pipe are linked together;
the top of the buffer cylinder is provided with a sealing plate, the top of the sealing plate is provided with an output pipe and an input pipe, the output pipe is communicated with the flow channel, the input pipe is communicated with the buffer cylinder, the input end of the input pipe is provided with a three-way pipe, the input pipe is connected with a refrigerant pipeline and a heating medium pipeline through the three-way pipe, and valves for controlling the opening and closing of the pipelines are arranged on the output pipe, the refrigerant pipeline and the heating medium pipeline.
The heat transfer tube comprises a plurality of U-shaped tubes, the U-shaped tubes are distributed in a longitudinal array, and two adjacent U-shaped tubes are communicated to form an S-shaped bending structure.
The U-shaped pipe comprises two long pipes and a short pipe for connecting the two long pipes, and a positioning ring is arranged at the center of the short pipe.
The invention discloses a high-efficiency esterification reaction kettle for preparing ethyl formate, which also comprises a stirring device arranged in a U-shaped pipe, wherein the stirring device comprises a stirring rod rotatably arranged on a positioning ring, one end of the stirring rod is rotatably connected with a central shaft, a plurality of groups of blades are distributed on the peripheral surface of the stirring rod at equal intervals, and a transmission mechanism is arranged between the other end of the stirring rod and the inner wall of the kettle body.
The internal wall of cauldron has seted up a plurality of constant head tanks that correspond the puddler, the puddler tip extends into in the constant head tank.
The transmission mechanism comprises a mounting groove arranged on the side wall of the positioning groove, a toothed ring is arranged at the bottom of the mounting groove, and a gear meshed with the toothed ring is fixedly arranged on the outer wall of the stirring rod.
The sealing plate bottom end fixing is equipped with the connecting pipe that is used for connecting output tube and runner, the connecting pipe is sealed rotation with the runner and is connected.
The sealing groove is formed in the outer peripheral surface of the sealing plate, and the sealing ring is fixedly mounted on the inner wall of the buffer cylinder and is in sealing and rotating connection with the sealing groove.
The limiting groove is formed in the peripheral surface of the buffer cylinder, and the top surface of the kettle body is clamped in the limiting groove.
The buffer cylinder is in sealing and rotating connection with the kettle body, and the sealing plate is in sealing and rotating connection with the buffer cylinder.
The invention has the positive effects that:
(1) According to the efficient esterification reaction kettle for preparing ethyl formate, the flow channel is formed in the central shaft, the heat transfer pipe is matched to form the S-shaped bent structure, the heat transfer medium can directly circulate from the heat transfer pipe to enter the flow channel to form circulation, and when the central shaft rotates, the heat transfer pipe is driven to rotate, so that stirring of materials is realized, the contact surface of the heat transfer medium and the materials is always changed along with the rotation of the heat transfer pipe, the heat transfer pipe is contacted with the materials at different positions respectively, uniform heat transfer of the materials is facilitated, and the materials and a heat source are more directly transferred.
(2) According to the efficient esterification reaction kettle for preparing ethyl formate, the three-way pipe is arranged, the refrigerant pipeline and the heat medium pipeline are separately connected, and the buffer barrel is matched, so that the transportation of cold and hot media can be respectively controlled under the condition that the rotation of the central shaft is not influenced, namely, when the reaction is carried out, the types of media entering the buffer barrel can be controlled by opening and closing the control valve, different heat transfer media are rapidly switched, the time for heating materials from room temperature to reaction temperature and cooling materials from reaction temperature to temperature capable of discharging is reduced, and the production efficiency is improved.
(3) According to the efficient esterification reaction kettle for preparing ethyl formate, the stirring rod and the blades in the U-shaped pipe are arranged, the stirring rod is driven to rotate along with the rotation of the central shaft, the gear arranged on the stirring rod is matched with the toothed ring positioned on the inner wall of the kettle body, so that the stirring rod rotates while revolving around the central shaft, the blades rotate to drive materials to flow and circulate, the materials are enabled to be frequently contacted around the heat transfer pipe, the mixing uniformity degree of the materials and the heat transfer effect of the materials are further improved, the esterification reaction is facilitated, the reaction speed is improved, the heat transfer efficiency is increased, and the production efficiency is further improved.
Drawings
The efficient esterification reaction kettle for preparing ethyl formate is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram showing the overall structure of a shaft of a high-efficiency esterification reactor for ethyl formate production in this example;
FIG. 2 is a schematic diagram showing the internal sectional structure of a high-efficiency esterification reactor for ethyl formate production according to this example;
FIG. 3 is a schematic view showing a partial sectional structure of a high-efficiency esterification reactor for producing ethyl formate according to the present embodiment;
FIG. 4 is a schematic diagram showing the internal structure of the efficient esterification reactor for preparing ethyl formate according to the present embodiment;
fig. 5 is a schematic structural diagram of a middle stirring rod of the efficient esterification reactor for preparing ethyl formate according to the embodiment.
The above reference numerals are as follows:
a kettle body 1; a central shaft 2; a motor 3; a heat transfer pipe 4; a U-shaped tube 41; a positioning ring 42; a buffer tube 5; a flow passage 6; a sealing plate 7; an output pipe 8; an input tube 9; tee 91; a refrigerant pipe 92; a heating medium pipe 93; a valve 10; a stirring rod 11; a positioning groove 12; a toothed ring 13; a gear 14; a connection pipe 15; a seal groove 16; a seal ring 17; a vane 18.
Detailed Description
Examples
See fig. 1 to 5, the efficient esterification reaction kettle for preparing ethyl formate of this embodiment comprises a kettle body 1, a central shaft 2 and a motor 3, wherein the top of the kettle body 1 is provided with a feed inlet, the bottom of the kettle body 1 is provided with a discharge outlet, during use, materials are added into the kettle body 1 through the feed inlet, and after the reaction is completed, products are discharged from the discharge outlet.
The center pin 2 is established in the cauldron body 1 and is rotated with the cauldron body 1 and be connected, the bottom of center pin 2 runs through the cauldron body 1 and with motor 3 output fixed connection, the center pin 2 top is equipped with buffer tube 5, set up runner 6 in the center pin 2, the center pin 2 outer wall is equipped with 4 heat transfer tube 4 of equidistant setting, drive heat transfer tube 4 and rotate when center pin 2 rotates, heat transfer tube 4 stirs the material in the cauldron body 1 when rotating, improve the even degree of material mixing, make different materials contact more abundant, be favorable to the reaction ground to go on.
One end of the heat transfer tube 4 is communicated with the flow channel 6, the other end of the heat transfer tube 4 is communicated with the buffer tube 5, and the heat transfer tube 4 and the flow channel 6 together form a loop, so that heat transfer medium can circulate in the heat transfer tube 4 and the flow channel 6, heat transfer medium and materials can be efficiently transferred, and rotation stirring of the heat transfer tube 4 is matched, so that the contact surface of the heat transfer medium and the materials always changes along with rotation of the heat transfer tube 4, the heat transfer tube 4 is respectively contacted with the materials at different positions, uniform heat transfer of the materials is facilitated, and the materials and heat sources are transferred more directly.
The top of the buffer tube 5 is provided with a sealing plate 7, the top of the sealing plate 7 is provided with an output tube 8 and an input tube 9, the output tube 8 is communicated with the flow channel 6, the input tube 9 is communicated with the buffer tube 5, the input end of the input tube 9 is provided with a three-way tube 91, the input tube 9 is connected with a refrigerant pipeline 92 and a heating medium pipeline 93 through the three-way tube 91, and valves 10 for controlling the opening and closing of the pipelines are arranged on the output tube 8, the refrigerant pipeline 92 and the heating medium pipeline 93.
When the device is used, the refrigerant pipeline 92 is connected with a refrigerant medium, the heat medium pipeline 93 is connected with the heat medium, the type of the medium entering the input pipe 9 can be controlled by opening and closing the corresponding pipeline valve 10, the heat transfer medium can be rapidly switched, and the heat exchange speed is improved, namely, when the reaction is carried out, the type of the medium entering the buffer cylinder 5 can be controlled by opening and closing the valve 10, the switching of different heat transfer mediums is rapid, the time for heating the material from room temperature to the reaction temperature and cooling the material from the reaction temperature to the temperature capable of discharging is reduced, and the production efficiency is improved.
In practical application, the heat transfer medium is input into the buffer tube 5 through the input tube 9, is conveyed into each heat transfer tube 4 through the buffer tube 5, finally enters the flow channel 6 through the heat transfer tube 4, and is discharged through the output tube 8, so that heat exchange of materials is realized, and the rapid reaction is ensured.
Each group of heat transfer tubes 4 comprises 5U-shaped tubes 41,5 and U-shaped tubes 41 which are distributed in a longitudinal array, two adjacent U-shaped tubes 41 are communicated to form an S-shaped bending structure, the contact area between the heat transfer tubes 4 and materials under the structure is larger, the heat transfer effect is better, stirring and mixing of the materials are facilitated, and the esterification reaction effect of the materials is improved.
The U-shaped tube 41 comprises two long tubes and a short tube for connecting the two long tubes, and a positioning ring 42 is arranged in the center of the short tube.
The efficient esterification reaction kettle for preparing ethyl formate of this embodiment further comprises a stirring device arranged in the U-shaped tube 41, the stirring device comprises a stirring rod 11 rotatably arranged on a positioning ring 42, one end of the stirring rod 11 is rotatably connected with the central shaft 2, a plurality of groups of blades 18 are distributed on the peripheral surface of the stirring rod 11 at equal intervals, and a transmission mechanism is arranged between the other end of the stirring rod 11 and the inner wall of the kettle body 1. Can improve the stability of puddler 11 through holding ring 42, puddler 11 tip and center pin 2 rotate to be connected, puddler 11 outer peripheral face equidistance distributes has multiunit blade 18, be provided with drive mechanism between puddler 11 and the cauldron body 1 inner wall, when puddler 11 rotates along with center pin 2, under drive mechanism's effect, puddler 11 rotates, drive blade 18 rotates, make blade 18 rotate drive material flow circulation, make the material frequently contact around heat transfer pipe 4, further improve the misce bene degree of material and the heat transfer effect of material, be favorable to the going on of esterification reaction, the reaction rate has been improved.
The inner wall of the kettle body 1 is provided with a plurality of positioning grooves 12 corresponding to the stirring rods 11, and the end parts of the stirring rods 11 extend into the positioning grooves 12.
The drive mechanism is including seting up in the mounting groove of constant head tank 12 lateral wall, and the mounting groove bottom is equipped with ring gear 13, and the fixed gear 14 that is connected with ring gear 13 meshing that is equipped with of puddler 11 outer wall makes puddler 11 revolve around center pin 2 and rotates, carries out spacingly through constant head tank 12 to puddler 11, guarantees that puddler 11 remains at the same height throughout along with center pin 2 pivoted, has guaranteed the stable meshing of gear 14 and ring gear 13.
The bottom end of the sealing plate 7 is fixedly provided with a connecting pipe 15 for connecting the output pipe 8 with the runner 6, and the connecting pipe 15 is in sealing and rotating connection with the runner 6.
The sealing groove 16 is formed in the outer peripheral surface of the sealing plate 7, the sealing ring 17 is fixedly arranged on the inner wall of the buffer cylinder 5, and the sealing ring 17 is in sealing and rotating connection with the sealing groove 16.
Through the cooperation of seal groove 16 and sealing ring 17, be favorable to guaranteeing that buffer tube 5 keeps sealed with closing plate 7 in the rotation in-process, reduce closing plate 7 and buffer tube 5 and take place the risk of dislocation skew.
The limiting groove is formed in the peripheral surface of the buffer cylinder 5, and the top surface of the kettle body 1 is clamped in the limiting groove.
The buffer cylinder 5 is in sealing rotation connection with the kettle body 1, and the sealing plate 7 is in sealing rotation connection with the buffer cylinder 5.
When the efficient esterification reaction kettle is used, firstly, the refrigerant pipeline 92 is connected with a refrigerant medium, the heat medium pipeline 93 is connected with the heat medium, reaction materials are added into the kettle body 1, according to the requirements of a reaction process, when the temperature is raised, the valve 10 on the refrigerant pipeline 92 is closed, the valves 10 on the heat medium pipeline 93 and the output pipe 8 are opened, the motor 3 is started, the heat medium is input, the input pipe 9 inputs the heat medium into the buffer cylinder 5, the heat medium is conveyed into each heat transfer pipe 4 through the buffer cylinder 5, finally, after the heat transfer pipe 4 enters the flow channel 6, the heat transfer pipe 8 is discharged, the motor 3 drives the central shaft 2 to rotate, the heat transfer pipe 4 is driven to rotate when the central shaft 2 rotates, the heat transfer pipe 4 stirs materials in the kettle body 1 when rotating, the uniformity of the materials is improved, different materials are contacted more fully, meanwhile, the rotation of the central shaft 2 drives the stirring rod 11 to rotate, the gear 14 arranged on the stirring rod 11 is matched with the toothed ring 13 positioned on the inner wall of the kettle body 1, the stirring rod 11 rotates around the central shaft 2, the blades 18 are driven to rotate, the blades 18 rotate around the central shaft 18, the blades 18 are driven to rotate, the heat transfer materials are driven to flow uniformly, the heat transfer materials are contacted with each other, the reaction materials are contacted with each other evenly, and the reaction materials are contacted with each other, the reaction materials are subjected to the reaction effect is improved, and the reaction speed is convenient, and the reaction conditions are easy is convenient, and the reaction conditions are easy to be produced;
on the contrary, when the temperature needs to be reduced, the valve 10 on the heat medium pipeline 93 is closed, and the valve 10 on the refrigerant pipeline 92 is started, at this time, the medium in the heat transfer pipe 4 is changed, and the temperature is changed immediately, so that the material and the heat source are transferred more directly, and compared with the traditional jacket, coil pipe and other structures, the heat transfer device has the advantages of good heat transfer effect, high heat transfer uniformity and the like.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the embodiments of the present invention, and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While remaining within the scope of the invention, obvious variations or modifications are incorporated by reference herein.
Claims (10)
1. The utility model provides an ethyl formate preparation is with high-efficient esterification reaction cauldron which characterized in that: the novel heat transfer device comprises a kettle body (1), a central shaft (2) and a motor (3), wherein a feed inlet is formed in the top of the kettle body (1), a discharge outlet is formed in the bottom of the kettle body (1), the central shaft (2) is arranged in the kettle body (1) and is rotationally connected with the kettle body (1), the bottom end of the central shaft (2) penetrates through the kettle body (1) and is fixedly connected with the output end of the motor (3), a buffer cylinder (5) is arranged at the top of the central shaft (2), flow channels (6) are formed in the central shaft (2), a plurality of groups of heat transfer pipes (4) are arranged at equal intervals on the outer wall of the central shaft (2), one end of each heat transfer pipe (4) is communicated with the corresponding flow channel (6), and the other end of each heat transfer pipe (4) is communicated with the corresponding buffer cylinder (5).
The top of a buffer cylinder (5) is provided with a sealing plate (7), the top of the sealing plate (7) is provided with an output pipe (8) and an input pipe (9), the output pipe (8) is communicated with a runner (6), the input pipe (9) is communicated with the buffer cylinder (5), the input end of the input pipe (9) is provided with a three-way pipe (91), the input pipe (9) is connected with a refrigerant pipeline (92) and a heating medium pipeline (93) through the three-way pipe (91), and valves (10) for controlling opening and closing of the pipelines are arranged on the output pipe (8), the refrigerant pipeline (92) and the heating medium pipeline (93).
2. The efficient esterification reactor for preparing ethyl formate according to claim 1, wherein the heat transfer tube (4) comprises a plurality of U-shaped tubes (41), the plurality of U-shaped tubes (41) are distributed in a longitudinal array, and two adjacent U-shaped tubes (41) are communicated to form an S-shaped bending structure.
3. The efficient esterification reactor for preparing ethyl formate according to claim 2, wherein the U-shaped tube (41) comprises two long tubes and a short tube for connecting the two long tubes, and a positioning ring (42) is arranged at the center of the short tube.
4. The efficient esterification reaction kettle for preparing ethyl formate according to claim 3, further comprising a stirring device arranged in the U-shaped tube (41), wherein the stirring device comprises a stirring rod (11) rotatably arranged on a positioning ring (42), one end of the stirring rod (11) is rotatably connected with the central shaft (2), a plurality of groups of blades (18) are distributed on the peripheral surface of the stirring rod (11) at equal intervals, and a transmission mechanism is arranged between the other end of the stirring rod (11) and the inner wall of the kettle body (1).
5. The efficient esterification reaction kettle for preparing ethyl formate according to claim 4, wherein a plurality of positioning grooves (12) corresponding to stirring rods (11) are formed in the inner wall of the kettle body (1), and the end parts of the stirring rods (11) extend into the positioning grooves (12).
6. The efficient esterification reaction kettle for preparing ethyl formate according to claim 5, wherein the transmission mechanism comprises a mounting groove arranged on the side wall of the positioning groove (12), a toothed ring (13) is arranged at the bottom of the mounting groove, and a gear (14) meshed with the toothed ring (13) is fixedly arranged on the outer wall of the stirring rod (11).
7. The efficient esterification reaction kettle for preparing ethyl formate according to claim 1, wherein a connecting pipe (15) for connecting an output pipe (8) and a runner (6) is fixedly arranged at the bottom end of the sealing plate (7), and the connecting pipe (15) is in sealing rotary connection with the runner (6).
8. The efficient esterification reaction kettle for preparing ethyl formate according to claim 1, wherein a sealing groove (16) is formed in the outer circumferential surface of the sealing plate (7), a sealing ring (17) is fixedly mounted on the inner wall of the buffer cylinder (5), and the sealing ring (17) is in sealing rotary connection with the sealing groove (16).
9. The efficient esterification reaction kettle for preparing ethyl formate according to claim 1, wherein a limit groove is formed in the peripheral surface of the buffer cylinder (5), and the top surface of the kettle body (1) is clamped in the limit groove.
10. The efficient esterification reaction kettle for preparing ethyl formate according to any one of claims 1 to 9, wherein the buffer cylinder (5) is in sealing rotary connection with the kettle body (1), and the sealing plate (7) is in sealing rotary connection with the buffer cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310426249.8A CN116510657A (en) | 2023-04-20 | 2023-04-20 | High-efficient esterification reaction kettle for preparing ethyl formate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310426249.8A CN116510657A (en) | 2023-04-20 | 2023-04-20 | High-efficient esterification reaction kettle for preparing ethyl formate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116510657A true CN116510657A (en) | 2023-08-01 |
Family
ID=87398691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310426249.8A Pending CN116510657A (en) | 2023-04-20 | 2023-04-20 | High-efficient esterification reaction kettle for preparing ethyl formate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116510657A (en) |
-
2023
- 2023-04-20 CN CN202310426249.8A patent/CN116510657A/en active Pending
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