CN113648945A - Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets - Google Patents
Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets Download PDFInfo
- Publication number
- CN113648945A CN113648945A CN202110930580.4A CN202110930580A CN113648945A CN 113648945 A CN113648945 A CN 113648945A CN 202110930580 A CN202110930580 A CN 202110930580A CN 113648945 A CN113648945 A CN 113648945A
- Authority
- CN
- China
- Prior art keywords
- heating
- nozzle
- heating container
- temperature
- micro
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 190
- 238000000034 method Methods 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 114
- 238000005507 spraying Methods 0.000 claims abstract description 76
- 239000007788 liquid Substances 0.000 claims description 63
- 239000002994 raw material Substances 0.000 claims description 39
- 238000009434 installation Methods 0.000 claims description 25
- 238000002474 experimental method Methods 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 23
- 238000000197 pyrolysis Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 230000001105 regulatory effect Effects 0.000 claims description 16
- 230000001276 controlling effect Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 238000012795 verification Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000000889 atomisation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004364 calculation method Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 238000004821 distillation Methods 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 11
- XKGDWZQXVZSXAO-ADYSOMBNSA-N Ricinoleic Acid methyl ester Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC(=O)OC XKGDWZQXVZSXAO-ADYSOMBNSA-N 0.000 description 10
- XKGDWZQXVZSXAO-UHFFFAOYSA-N ricinoleic acid methyl ester Natural products CCCCCCC(O)CC=CCCCCCCCC(=O)OC XKGDWZQXVZSXAO-UHFFFAOYSA-N 0.000 description 10
- XKGDWZQXVZSXAO-SFHVURJKSA-N Ricinolsaeure-methylester Natural products CCCCCC[C@H](O)CC=CCCCCCCCC(=O)OC XKGDWZQXVZSXAO-SFHVURJKSA-N 0.000 description 9
- ANLABNUUYWRCRP-UHFFFAOYSA-N 1-(4-nitrophenyl)cyclopentane-1-carbonitrile Chemical compound C1=CC([N+](=O)[O-])=CC=C1C1(C#N)CCCC1 ANLABNUUYWRCRP-UHFFFAOYSA-N 0.000 description 8
- XPQPWPZFBULGKT-UHFFFAOYSA-N undecanoic acid methyl ester Natural products CCCCCCCCCCC(=O)OC XPQPWPZFBULGKT-UHFFFAOYSA-N 0.000 description 8
- 238000013461 design Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- FXHGMKSSBGDXIY-UHFFFAOYSA-N heptanal Chemical compound CCCCCCC=O FXHGMKSSBGDXIY-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- B01J6/00—Heat treatments such as Calcining; Fusing ; Pyrolysis
- B01J6/008—Pyrolysis reactions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a regulation and control method of a device capable of realizing full heating and temperature rise of micro-droplets, which is characterized in that a group of metal fins which are obliquely arranged and have the same inclination angle are uniformly distributed on the circumferential inner wall of a heating container at intervals, when the micro-droplets sprayed out by a nozzle are required to be quickly heated and heated, a heating device is used for heating, so that the inner wall of the heating container and the surfaces of the metal fins are heated together to form a high-temperature wall surface, then the nozzle is used for carrying out rotary spraying along the inclination direction of the metal fins in the heating container, and the micro-droplets formed by spraying are fully sprayed on the high-temperature wall surface to realize quick temperature rise. The invention scientifically and reasonably arranges the metal fins, increases the contact area of the micro-droplets and the high-temperature wall surface, ensures that the temperature of the high-temperature wall surface is more uniform, is more favorable for quickly heating the micro-droplets, realizes the regulation and control of the heating rate of the micro-droplets by utilizing the structure of the metal fins, and has simple regulation and control means and strong controllability.
Description
Technical Field
The invention relates to the technical field of rapid liquid temperature rise, in particular to a regulating and controlling method of a temperature rise device capable of achieving full heating of micro-droplets.
Background
In the prior art, the liquid heating device generally has the problems of large liquid layer thickness, large heat transfer temperature gradient and the like, which easily causes uneven heating of high boiling point liquid and high coking rate, so that the heating efficiency is reduced.
Chinese patent CN109011676A and CN108246210A respectively disclose a rectifying column and a novel pyrolysis reaction device capable of realizing rapid temperature rise vaporization of materials, all utilize spraying technology to realize rapid temperature rise vaporization or pyrolysis of materials, both of these patents utilize the nozzle to spray in the heating container, the inner wall of the heating container forms a high temperature wall surface by electromagnetic heating, the nozzle carries out lateral spraying to the high temperature wall surface of the heating container, and rapid temperature rise process of fog drops is realized. However, when the nozzle performs rotary spraying in the heating container, the heat utilization rate of the material per unit volume to the high-temperature wall surface is higher and the high-temperature stability on the high-temperature wall surface is better than that of the nozzle performing spraying in a static state, so that the nozzle can be designed into a structure of rotary feeding.
However, in the process of rotating and feeding the nozzle, the rotating nozzle has a certain stirring effect on the surrounding atmosphere and can drive the surrounding airflow to rotate, so that a cyclone vortex is generated, the flow rate of the ascending airflow is accelerated, and a part of fog drops flow out from the air outlet at the top of the heating container before reaching the high-temperature wall surface of the heating container, so that the collision probability of the micro-drops and the high-temperature wall surface is reduced, and the heating efficiency is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a regulating and controlling method of a device capable of realizing sufficient heating of micro-droplets. By the regulating method, the collision probability of the micro-droplets and the high-temperature surface can be increased, the heat utilization efficiency is increased, the high-flow material is quickly heated, and the production efficiency is improved.
The regulating and controlling method of the device capable of realizing the full heating and temperature rising of the micro-droplets is characterized in that the device capable of realizing the full heating and temperature rising of the micro-droplets comprises a heating container with a cylindrical main body structure, an air outlet is arranged at the top of the heating container, a heating device is arranged on the periphery of the heating container, a rotary liquid spraying device is arranged on the heating container, a nozzle of the rotary liquid spraying device is suspended in the center of an inner cavity of the heating container, a jet orifice of the nozzle is positioned at the side part of the nozzle, atomized materials are sprayed to the side wall of the heating container through the nozzle,
wherein, a group of metal fins which are obliquely arranged and have the same inclination angle are uniformly distributed on the circumferential inner wall of the heating container at intervals, when the micro liquid drops sprayed by the nozzle are rapidly heated and heated, the heating device is firstly used for heating, so that the inner wall of the heating container and the surfaces of the metal fins are heated together to form a high-temperature wall surface, then the nozzle is used for rotationally spraying in the heating container along the oblique direction of the metal fins, and the micro liquid drops formed by spraying are fully sprayed on the high-temperature wall surface to realize rapid heating,
according to the condition parameters of the rotary spraying of the nozzle in the heating container, the inclination angle and the width parameters of the metal fin on the inner wall of the heating container are adjusted, and the specific adjusting method comprises the following steps:
1) determination of the width of a metal fin
Testing an atomization angle beta when the nozzle sprays and a distance a from the nozzle to the inner wall of the cylinder body of the heating container; the width b of the metal fin is calculated as follows:
b＝2×a×sin(β/2)
2) determination of the inclination of the metal fins mounted on the circumferential inner wall of a heating vessel
Measuring a radial initial velocity V0 of the micro-droplets ejected from the ejection opening of the nozzle when the nozzle is spraying in a static state; measuring the radius R1 of the spray opening of the nozzle from the inner center of the nozzle, and calculating the tangential speed V1 of the spray when the nozzle rotates according to the rotating speed of the nozzle rotating and spraying in the cylinder of the heating container; the spraying condition parameters of the nozzle in a static state are the same as the condition parameters of the nozzle in rotary spraying, and the condition parameters comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature when the nozzle sprays;
then calculating the vector sum speed of the radial initial speed V0 and the tangential speed V1, wherein the vector sum speed is the speed direction of the micro liquid drops which are sprayed from the spray opening of the nozzle and move after the micro liquid drops are sprayed when the nozzle carries out rotary spraying, and the included angle between the vector sum speed and the radial initial speed V0 is marked as alpha; according to the fact that the vector and the speed are perpendicular to the metal fin, an included angle theta between the metal fin and a tangent line of the circumferential inner wall of the heating container is determined, and the calculation formula is as follows:
θ＝α
an included angle theta between the metal fin and a tangent line of the circumferential inner wall of the heating container is an inclined angle of the metal fin mounted on the circumferential inner wall of the heating container;
3) determining the range of the approximate number n of the metal fins according to the installation inclination angle theta and the width b of the metal fins and the circumferential length pi d of the circumferential inner wall of the heating container, and calculating as follows:
meanwhile, the number of the metal fins is at least 3;
and then setting a verification experiment to investigate the experimental effect of the metal fins under different quantities so as to determine the optimal installation quantity range of the metal fins.
The regulating and controlling method of the device capable of achieving full heating of micro-droplets is characterized in that when the heating container is used as a pyrolysis reactor and used for rapid heating of raw material liquid for carrying out pyrolysis reaction, product steam formed by pyrolysis reaction flows out from a gas outlet of the heating container during verification experiment, the flowing product steam is condensed, and the product yield is detected and analyzed; according to the process, under the conditions that the heating temperature of pyrolysis is the same and the condition parameters under the rotary spraying of the nozzle are not changed, the corresponding relation between the number of the metal fins and the product yield under the experiment is investigated, and the number of the metal fins corresponding to the experiment under the highest product yield is the optimal installation number of the metal fins; wherein the condition parameters under the rotary spraying of the nozzle comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
The regulating and controlling method for the device capable of achieving full heating of micro-droplets is characterized in that when the heating container is used as a tower kettle reboiler of a rectifying tower and used for rapidly heating raw material liquid to obtain raw material high-temperature steam, the raw material high-temperature steam formed in the verification experiment flows outwards from a gas outlet of the heating container, and the temperature of the raw material high-temperature steam passing through the gas outlet is detected; according to the process, under the conditions that the rectification heating temperature is the same and the condition parameters under the rotary spraying of the nozzle are not changed, the corresponding relation between the number of the metal fins under the experiment and the temperature of the high-temperature steam of the raw material is investigated, and the number of the metal fins corresponding to the experiment under the temperature of the high-temperature steam of the raw material is the optimal installation number of the metal fins; wherein the condition parameters under the rotary spraying of the nozzle comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
The regulation and control method of the device capable of realizing full heating of micro-droplets is characterized in that the metal fins are made of stainless steel with good thermal conductivity; the structure of the metal fin is a mesh structure, a plate structure or a louver structure.
The regulating and controlling method of the device capable of achieving full heating of micro-droplets is characterized in that the heating device comprises an electromagnetic coil wound on the outer wall of the heating container, two ends of the electromagnetic coil are connected with electromagnetic heating controllers, the electromagnetic heating controllers are connected with temperature controllers, the temperature controllers are connected with thermocouples, and the temperature of the heated outer wall of the heating container is tested through the thermocouples.
The regulating and controlling method of the device capable of realizing full heating of micro-droplets is characterized in that a drain outlet is arranged at the bottom of the heating container, and a drain valve is arranged on the drain outlet.
The regulating and controlling method of the device capable of achieving full heating of micro-droplets is characterized in that the rotary liquid spraying device comprises a motor, a feeding shaft tube and a nozzle arranged at the bottom of the feeding shaft tube, the outer side of the feeding shaft tube is in sealed and rotary connection with the top of a heating container, the upper end of the feeding shaft tube penetrates out of the top of the heating container upwards and is in sealed and rotary connection with a liquid inlet tube, and a raw material liquid pump is arranged on the liquid inlet tube; the fixed belt pulley that is provided with of feeding central siphon upper end lateral part, set up a belt between the output shaft of belt pulley and motor, under the operation effect of motor, can drive the feeding central siphon through the belt and take place to rotate.
The regulating and controlling method of the device capable of achieving full heating of micro-droplets is characterized in that the metal fins are vertically arranged on the heating container, and the metal fins are arranged at the same height with the inner wall of the side part of the heating container.
The regulating thought of the invention is as follows: 1. by arranging the fins, the fins and the inner wall form high-temperature surfaces, so that the area of the high-temperature surface capable of heating micro liquid drops is increased; 2. by arranging the forward inclination of the fins, the micro-droplets can vertically collide with the fin plate, the tiled diameter of the micro-droplets is increased, and the heating efficiency of the micro-droplets is improved; 3. by arranging the fins, the cyclone vortex generated by the rotation of the nozzle is disturbed, the turbulence of the air flow is increased, and the collision probability of the micro liquid drops and the high-temperature wall surface is improved.
By adopting the technology, compared with the prior art, the invention has the beneficial effects that:
1. the heating fins are scientifically and reasonably arranged, so that the contact area between the spray and the high-temperature wall surface is increased, the temperature of the high-temperature wall surface is more uniform, and the rapid temperature rise of micro-droplets is facilitated.
2. The heating fins are scientifically and reasonably arranged, so that the micro-droplets can vertically collide with the fins, the tiled diameter of the micro-droplets is increased, and the micro-droplets can be rapidly heated.
3. By arranging the metal fins on the inner wall of the heating container, the turbulence effect of the air flow can be increased when the air flow impacts the metal fins, so that the turbulence phenomenon of the air flow is enhanced. The airflow carries micro liquid drops to collide randomly, so that the collision probability of the micro liquid drops and a high-temperature wall surface is increased, and the heat exchange efficiency is enhanced.
4. The structure of the metal fin is utilized to realize the regulation and control of the heating rate of the micro-droplets, and the regulation and control means is simple and has strong controllability.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus capable of achieving sufficient heating and temperature rise of micro-droplets;
FIG. 2 is a schematic view of the micro-droplets formed by the rotating spray of the nozzle of the present invention being sprayed onto the metal fins;
FIG. 3 is a schematic view of the width design of the metal fin of the present invention;
FIG. 4 is a schematic view of the installation angle design of the metal fin of the present invention;
description of reference numerals: heating container 1, feed inlet 2, feeding central siphon 3, nozzle 4, gas outlet 5, metal fin 6, drain 7, solenoid 8, electromagnetic heating controller 9, temperature controller 10, thermocouple 11.
Detailed Description
The present invention is further illustrated by the following examples, which should not be construed as limiting the scope of the invention.
Example (b):
the structure of the device for heating micro-droplets fully is shown in figure 1, and comprises a heating container 1 with a cylindrical main body structure, wherein an air outlet 5 is arranged at the top of the heating container 1, a heating device is arranged outside the heating container 1, a rotary liquid spraying device is arranged on the heating container 1, a nozzle 4 of the rotary liquid spraying device is suspended in the center of an inner cavity of the heating container 1, and a spraying opening of the nozzle 4 is positioned at the side part of the nozzle so as to spray atomized materials to the side wall of the heating container 1 through the nozzle 4.
The metal fins 6 which are obliquely arranged and have the same inclination angle are uniformly distributed on the circumferential inner wall of the heating container 1 at intervals, when micro liquid drops sprayed by the nozzle 4 are required to be rapidly heated and heated, the micro liquid drops are firstly heated by the heating device, the inner wall of the heating container 1 and the surfaces of the metal fins 6 are heated together to form a high-temperature wall surface, then the nozzle 4 is rotated and sprayed in the heating container 1 along the inclination direction of the metal fins 6, and the micro liquid drops formed by spraying are fully sprayed on the high-temperature wall surface to achieve rapid heating.
According to the condition parameters of the rotary spraying of the nozzle 4 in the heating container 1, the inclination angle and the width parameters of the metal fin 6 on the inner wall of the heating container 1 are adjusted, and the specific adjusting method comprises the following steps:
1) determination of the width of the metal fins 6
Testing the atomization angle beta of the nozzle 4 during spraying and the distance a from the nozzle 4 to the inner wall of the cylinder of the heating container 1; the width b of the metal fin 6 is calculated as follows:
b＝2×a×sin(β/2)
the design idea of the width of the metal fin 6 is that the micro mist drops ejected laterally from the nozzle 4 in a static state form a spraying area, the cross-sectional width of the spraying area at the position of the side wall of the heating container 1 is approximately equal to the width of the metal fin 6, and in this case, the micro mist drops ejected instantaneously at a certain moment when the nozzle 4 rotates for spraying can be basically ejected on the surface of the metal fin 6 in theory.
2) Determination of the inclination of the metal fins 6 mounted on the circumferential inner wall of the heating vessel 1
When the nozzle 4 sprays in a static state, measuring the radial initial velocity V0 of the micro liquid drop sprayed from the spray opening of the nozzle 4 by a laser Doppler velocimeter; measuring the radius R1 of the spray opening of the nozzle from the inner center of the nozzle, and calculating the tangential speed V1 of the spray when the nozzle 4 rotates in the cylinder of the heating container 1 (the tangential speed V1 is equal to the multiplication value of the angular speed of the nozzle 4 and the radius R1) according to the rotating speed of the nozzle 4 when rotating and spraying; wherein the spraying condition parameters of the nozzle 4 in a static state are the same as the condition parameters of the nozzle 4 in rotary spraying, and the condition parameters comprise the raw material liquid composition, the spraying pressure, the spraying temperature and the like when the spraying is carried out through the nozzle 4;
then calculating the vector sum speed of the radial initial speed V0 and the tangential speed V1, wherein the vector sum speed is the speed direction of the micro liquid drops which are sprayed from the spray opening of the nozzle 4 and move after the micro liquid drops are sprayed out when the nozzle 4 carries out rotary spraying, and the included angle between the vector sum speed and the radial initial speed V0 is marked as alpha; according to the fact that the vector and the speed are perpendicular to the metal fin 6, an included angle theta between the metal fin 6 and a tangent line of the circumferential inner wall of the heating container 1 is determined, and a calculation formula is as follows:
θ＝α
an included angle theta between the metal fin 6 and a tangent line of the circumferential inner wall of the heating container 1 is an inclined angle of the metal fin 6 installed on the circumferential inner wall of the heating container 1;
the design idea of the installation inclination angle of the metal fin 6 is as follows: when the vector and the speed are perpendicular to the metal fin 6, the ejected micro-droplets can vertically collide with the metal fin, the tiled diameter of the micro-droplets is increased, and the rapid temperature rise of the micro-droplets is facilitated.
3) The approximate number n of the metal fins 6 is determined in the range of the inclination angle θ at which the metal fins 6 are mounted, the width b, and the circumferential length π d of the circumferential inner wall of the heating vessel 1, and is calculated as follows:
meanwhile, according to the experience in actual production operation, the number of the metal fins 6 is at least 3;
and then setting a verification experiment to examine the experimental effect of the metal fins 6 under different numbers so as to determine the optimal installation number range of the metal fins.
When the heating container 1 is used as a pyrolysis reactor and the heating container 1 is used for carrying out pyrolysis reaction by rapidly raising the temperature of the raw material liquid, the product steam formed by the pyrolysis reaction in the verification experiment flows out from the gas outlet 5 of the heating container 1, the flowing product steam is condensed, and the product yield is detected and analyzed; according to the process, under the conditions that the heating temperature of pyrolysis is the same and the condition parameters under the rotary spraying of the nozzle are not changed (namely, a single-factor experiment is set, the changed conditions are only the installation number of the metal fins 6, and the rest conditions are not changed), the corresponding relation between the number of the metal fins 6 and the product yield under the experiment is considered, and the number of the metal fins 6 corresponding to the experiment under the highest product yield is the optimal installation number of the metal fins 6; wherein the condition parameters under the rotary spraying of the nozzle 4 comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
When the heating container 1 is used as a tower kettle reboiler of the rectifying tower and the heating container 1 is used for rapidly heating the raw material liquid to obtain raw material high-temperature steam, the raw material high-temperature steam formed in the verification experiment flows out from a gas outlet 5 of the heating container 1, and the temperature of the raw material high-temperature steam passing through the gas outlet 5 is detected; according to the above process, under the conditions that the rectification heating temperature is the same and the condition parameters under the nozzle rotation spraying are not changed (namely, a single-factor experiment is set, the changed conditions are only the installation number of the metal fins 6, and the rest conditions are not changed), the corresponding relation between the number of the metal fins 6 and the temperature of the raw material high-temperature steam under the experiment is considered, and the number of the metal fins 6 corresponding to the experiment under the higher temperature of the raw material high-temperature steam is the optimal installation number of the metal fins 6. Wherein the condition parameters under the rotary spraying of the nozzle 4 comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
The metal fins 6 are made of stainless steel with good thermal conductivity; the structure of the metal fin 6 is a mesh structure, a plate structure or a louver structure.
The heating device comprises an electromagnetic coil 8 wound on the outer wall of the heating container 1, two ends of the electromagnetic coil 8 are connected with an electromagnetic heating controller 9, the electromagnetic heating controller 9 is connected with a temperature controller 10, the temperature controller 10 is connected with a thermocouple 11, and the temperature of the outer wall of the heating container 1 after being heated is tested through the thermocouple 11. A sewage draining outlet 7 is arranged at the bottom of the heating container 1, and a sewage draining valve is arranged on the sewage draining outlet 7.
The rotary liquid spraying device comprises a motor, a feeding shaft tube 3 and a nozzle 4 arranged at the bottom of the feeding shaft tube 3, the outer side of the feeding shaft tube 3 is connected with the top of the heating container 1 in a sealing and rotating way, the upper end of the feeding shaft tube 3 penetrates out of the top of the heating container 1 upwards and is connected with a liquid inlet tube in a sealing and rotating way, and a raw material liquid pump is arranged on the liquid inlet tube; the fixed belt pulley that is provided with of 3 upper end lateral parts of feeding central siphon, set up a belt between the output shaft of belt pulley and motor, under the operation effect of motor, can drive feeding central siphon 3 through the belt and take place to rotate.
In the field of rectification, the premise of rectification is that the raw material liquid is quickly heated and vaporized to form high-temperature steam, so that the heating container 1 can be used as a tower kettle reboiler of a rectification tower, and in this case, micro liquid drops are fully heated to quickly heat the micro liquid drops, so that the heat utilization efficiency can be effectively increased, and the energy consumption is saved.
In addition, in the field of high-temperature pyrolysis of some raw material liquids, pyrolysis reaction is realized in the moment that the raw material liquid contacts high temperature, and then pyrolysis products can be obtained. In the design idea of the invention, the nozzle sprays laterally to the high-temperature wall surface of the heating container, the temperature of the fog drops can be quickly raised to the cracking temperature in a very short time after the fog drops fully contact the high-temperature wall surface, and the target micromolecules are generated by reaction at the optimal cracking temperature, so that the deep cracking side reaction is less likely to occur, the yield of the reaction products is higher, and the reaction efficiency is best. For example: the reaction for generating the methyl undecylenate by cracking the methyl ricinoleate is instantly completed at high temperature, and the generated methyl undecylenate is easy to generate secondary decomposition when the reaction solution stays for a long time at high temperature.
Example 1: the device is adopted for cracking the methyl ricinoleate
Methyl ricinoleate (with the mass purity of 80%) is used as a raw material to carry out pyrolysis to prepare methyl undecylenate and heptanal:
the heating container has a cylindrical main structure and a diameter d of 210 mm. The nozzle is suspended in the center of the inner cavity of the heating container and is used for spraying atomized materials to the side wall of the heating container. In the pyrolysis reaction experiment, the nozzle is driven by the feeding shaft tube to rotate at the revolution of 4000r/min, a pair of spraying outlets (see fig. 1) are symmetrically arranged at the left side and the right side of the nozzle, and the distance between the spraying outlets of the nozzle and the vertical center line of the feeding shaft tube is about 25 mm. The raw material liquid is ricinoleic acid methyl ester (with the mass purity of 80%), the feeding pressure of the raw material liquid input into the nozzle is 0.6Mpa, and the feeding flow is 100 g/min. The atomization angle beta of each spray outlet of the nozzle is 20 degrees, the nozzle sprays under the condition, the sprayed micro-fog drops are tested by a nanometer laser particle size analyzer, and the average diameter D of the micro-fog drops3242 μm. Mean radial velocity u of droplet at the moment of ejection from nozzlex19m/s, calculated as the tangential velocity u at rotationy11 m/s. The radial average velocity uxWith tangential velocity uyThe vector sum speed between them is approximately 22m/s, and the angle α between said vector sum speed and the initial radial speed V0 is approximately 30 °. The distance a from the nozzle to the inner wall of the reactor was 80mm, and the width of the metal fin was 28mm (the metal fin was designed to be as high as the inner wall of the side portion of the heating vessel) and the circumference of the heating vessel was designed to be as wide as the inner wall of the side portion of the heating vesselA plurality of metal fins which are obliquely arranged and have the same inclination angle are uniformly distributed on the wall at intervals, and the included angle between the metal fins and the tangent line of the circumferential inner wall of the heating container is adjusted. When the heating vessel was heated to form a wall surface with a high temperature of 500 ℃ on the inner wall of the heating vessel, the cleavage reaction of methyl ricinoleate was carried out at a high temperature of 500 ℃. According to the above experimental process, when different operating conditions are changed (the changed operating conditions are the condition parameters of the installation inclination angle or the installation number of the metal fins), the corresponding experimental effects are respectively as follows:
1. and adjusting the included angle theta between the metal fins and the tangent line of the circumferential inner wall of the heating container to be 30 degrees, namely the installation inclination angle of the metal fins on the circumferential inner wall of the heating container is 30 degrees, and when the installation number of the metal fins is 3, the conversion rate of the methyl ricinoleate can reach 75 percent, and the yield of the methyl undecylenate can reach 53 percent.
2. When the included angle theta between the metal fins and the tangent line of the circumferential inner wall of the heating container is adjusted to be 30 degrees, namely the installation inclination angle of the metal fins on the circumferential inner wall of the heating container is 30 degrees, and the installation number of the metal fins is 6, the design distribution is shown in fig. 2. The conversion rate of the methyl ricinoleate can reach 95 percent, and the yield of the methyl undecylenate basically reaches 70 percent.
3. Without the metal fin, the conversion rate of methyl ricinoleate can reach 47 percent, and the yield of methyl undecylenate is only 32 percent.
4. And adjusting the included angle theta between the metal fins and the tangent line of the circumferential inner wall of the heating container to be 60 degrees, namely the installation inclination angle of the metal fins on the circumferential inner wall of the heating container is 60 degrees, and when the installation number of the metal fins is 6, the conversion rate of the methyl ricinoleate can reach 70 percent, and the yield of the methyl undecylenate can reach 49 percent.
5. The included angle theta between the metal fins and the tangent line of the circumferential inner wall of the heating container is adjusted to be 30 degrees, namely the installation inclination angle of the metal fins on the circumferential inner wall of the heating container is 30 degrees, the installation quantity of the metal fins is 6, and when the width of the metal fins is changed to be 10mm, the conversion rate of methyl ricinoleate can reach 80 percent, and the yield of methyl undecylenate can reach 57 percent.
The statements in this specification merely set forth a list of implementations of the inventive concept and the scope of the present invention should not be construed as limited to the particular forms set forth in the examples.
Claims (8)
1. A regulation and control method of a device capable of realizing micro-droplet full heating and temperature rise is characterized in that the device capable of realizing micro-droplet heating and temperature rise comprises a heating container (1) with a cylindrical main body structure, an air outlet (5) is arranged at the top of the heating container (1), a heating device is arranged on the periphery of the heating container (1), a rotary liquid spraying device is arranged on the heating container (1), a nozzle (4) of the rotary liquid spraying device is suspended in the center of an inner cavity of the heating container (1), a jet orifice of the nozzle (4) is positioned at the side part of the nozzle, atomized materials are sprayed to the side wall of the heating container (1) through the nozzle (4),
wherein, a group of metal fins (6) which are obliquely arranged and have the same inclination angle are uniformly distributed on the circumferential inner wall of the heating container (1) at intervals, when micro liquid drops sprayed by the nozzle (4) are rapidly heated and heated, the heating device is firstly used for heating, so that the inner wall of the heating container (1) and the surface of the metal fins (6) are heated together to form a high-temperature wall surface, then the nozzle (4) is used for rotationally spraying in the heating container (1) along the oblique direction of the metal fins (6), and the micro liquid drops formed by spraying are fully sprayed on the high-temperature wall surface to realize rapid heating,
according to the condition parameters of the rotary spraying of the nozzle (4) in the heating container (1), the inclination angle and the width parameters of the metal fin (6) installed on the inner wall of the heating container (1) are adjusted, and the specific adjusting method comprises the following steps:
1) determination of the width of a metal fin (6)
Testing the atomization angle beta when the nozzle (4) sprays and the distance a from the nozzle (4) to the inner wall of the cylinder of the heating container (1); the width b of the metal fin (6) is calculated as follows:
b＝2×a×sin(β/2)
2) determination of the inclination of the metal fins (6) on the circumferential inner wall of the heating vessel (1)
Measuring the radial initial velocity V0 of the micro liquid drop sprayed from the spray opening of the nozzle (4) when the nozzle (4) sprays in a static state; measuring the radius R1 of the spray opening of the nozzle from the inner center of the nozzle, and calculating the tangential speed V1 of the spray when the nozzle (4) rotates according to the rotating speed of the nozzle (4) rotating and spraying in the cylinder of the heating container (1); wherein the spraying condition parameters of the nozzle (4) in a static state are the same as the condition parameters of the nozzle (4) in rotary spraying, and the condition parameters comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature when the nozzle (4) is used for spraying;
then calculating the vector sum speed of the radial initial speed V0 and the tangential speed V1, wherein the vector sum speed is the speed direction of the micro liquid drops which are sprayed from the spray opening of the nozzle (4) and move after the micro liquid drops are sprayed when the nozzle (4) carries out rotary spraying, and the included angle between the vector sum speed and the radial initial speed V0 is marked as alpha; according to the fact that the vector and the speed are perpendicular to the metal fin (6), an included angle theta between the metal fin (6) and a tangent line of the circumferential inner wall of the heating container (1) is determined, and the calculation formula is as follows:
θ＝α
an included angle theta between the metal fin (6) and a tangent line of the circumferential inner wall of the heating container (1) is an inclined angle of the metal fin (6) installed on the circumferential inner wall of the heating container (1);
3) determining the range of the approximate number n of the metal fins (6) according to the inclination angle theta and the width b of the installation of the metal fins (6) and the circumferential length pi d of the circumferential inner wall of the heating container (1), and calculating as follows:
meanwhile, the number of the metal fins (6) is at least 3;
and then setting a verification experiment to examine the experimental effect of the metal fins (6) under different quantities so as to determine the optimal installation quantity range of the metal fins (6).
2. The regulating method of the device capable of heating micro droplets sufficiently as claimed in claim 1, wherein when the heating container (1) is used as a pyrolysis reactor and the heating container (1) is used for carrying out pyrolysis reaction by rapid heating of the raw material liquid, the product steam formed by pyrolysis reaction flows out from the gas outlet (5) of the heating container (1) in the verification experiment, the flowing product steam is condensed, and the product yield therein is detected and analyzed; according to the process, under the conditions that the heating temperature of pyrolysis is the same and the condition parameters of the nozzle (4) under rotary spraying are not changed, the corresponding relation between the number of the metal fins (6) and the product yield under an experiment is investigated, and the number of the metal fins (6) corresponding to the experiment under the highest product yield is the optimal installation number of the metal fins (6); wherein the condition parameters of the nozzle (4) under the rotary spraying comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
3. The control method of the device for achieving heating of micro droplets sufficiently according to claim 1, wherein when the heating container (1) is used as a reboiler of a distillation column, and the heating container (1) is used for rapidly heating a raw material liquid to obtain a high-temperature raw material vapor, the high-temperature raw material vapor formed in the verification experiment flows out from the gas outlet (5) of the heating container (1), and the temperature of the high-temperature raw material vapor passing through the gas outlet (5) is detected; according to the process, under the conditions that the rectification heating temperature is the same and the condition parameters of the nozzle (4) under rotary spraying are not changed, the corresponding relation between the number of the metal fins (6) and the temperature of the high-temperature steam of the raw material under the experiment is investigated, and the number of the metal fins (6) corresponding to the experiment under the higher temperature of the high-temperature steam of the raw material is the optimal installation number of the metal fins (6); wherein the condition parameters of the nozzle (4) under the rotary spraying comprise the conditions of raw material liquid composition, spraying pressure and spraying temperature.
4. The regulating method of the device capable of achieving the sufficient heating of the micro-droplets as claimed in claim 1, wherein the metal fin (6) is made of stainless steel with good thermal conductivity; the structure of the metal fin (6) is a net structure, a plate structure or a louver structure.
5. The regulation and control method of the device capable of heating the micro droplets sufficiently as claimed in claim 1, wherein the heating device comprises an electromagnetic coil (8) wound on the outer wall of the heating container (1), both ends of the electromagnetic coil (8) are connected with an electromagnetic heating controller (9), the electromagnetic heating controller (9) is connected with a temperature controller (10), the temperature controller (10) is connected with a thermocouple (11), and the temperature of the heated outer wall of the heating container (1) is tested by the thermocouple (11).
6. The regulating and controlling method of the device capable of achieving the sufficient heating of micro droplets as claimed in claim 1, characterized in that the bottom of the heating container (1) is provided with a drain outlet (7), and a drain valve is arranged on the drain outlet (7).
7. The regulating method of the device capable of achieving sufficient heating of micro-droplets according to claim 1, wherein the rotary liquid spraying device comprises a motor, a feeding shaft tube (3) and a nozzle (4) arranged at the bottom of the feeding shaft tube (3), the outer side of the feeding shaft tube (3) is connected with the top of the heating container (1) in a sealing and rotating manner, the upper end of the feeding shaft tube (3) penetrates out of the top of the heating container (1) upwards and is connected with a liquid inlet tube in a sealing and rotating manner, and a raw material liquid pump is arranged on the liquid inlet tube; the fixed belt pulley that is provided with of feeding central siphon (3) upper end lateral part, set up a belt between the output shaft of belt pulley and motor, under the operation effect of motor, can drive feeding central siphon (3) through the belt and take place to rotate.
8. The regulating method of the device capable of achieving the sufficient heating of the micro-droplets as claimed in claim 1, wherein the metal fins (6) are arranged at the same height as the inner wall of the heating container (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930580.4A CN113648945B (en) | 2021-08-13 | 2021-08-13 | Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930580.4A CN113648945B (en) | 2021-08-13 | 2021-08-13 | Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113648945A true CN113648945A (en) | 2021-11-16 |
| CN113648945B CN113648945B (en) | 2023-04-07 |
Family
ID=78479880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110930580.4A Active CN113648945B (en) | 2021-08-13 | 2021-08-13 | Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113648945B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324704A (en) * | 2021-12-29 | 2022-04-12 | 杭州谱育科技发展有限公司 | Chromatographic detection device and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102085453A (en) * | 2010-12-15 | 2011-06-08 | 杭州银轮科技有限公司 | Mixing device for diesel engine urea SCR system |
| US20110143237A1 (en) * | 2010-10-28 | 2011-06-16 | Clearedge Power, Inc. | Radiative Heat Transfer via Fins in a Steam Reformer |
| US20130068587A1 (en) * | 2010-05-18 | 2013-03-21 | Envirollea Inc. | Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained |
| CN105910080A (en) * | 2016-04-13 | 2016-08-31 | 湖南伟图科技有限公司 | Mist-spray rotary steam generator |
| CN108246210A (en) * | 2018-01-30 | 2018-07-06 | 浙江工业大学 | A kind of new type high temperature cracking reaction device |
| US20190070579A1 (en) * | 2016-04-12 | 2019-03-07 | Basf Antwerren Nv | Reactor for a cracking furnace |
| CN208606152U (en) * | 2018-06-19 | 2019-03-15 | 代天荣 | High-frequency induction steam generator |
| CN109724446A (en) * | 2017-10-27 | 2019-05-07 | 中国石油化工股份有限公司 | Augmentation of heat transfer pipe and pyrolysis furnace |
| CN112450839A (en) * | 2020-12-11 | 2021-03-09 | 追创科技(苏州)有限公司 | Nozzle assembly and cleaning equipment with same |
| CN113082752A (en) * | 2021-04-09 | 2021-07-09 | 云南国润香料制造有限公司 | Sectional type filler rectification device capable of improving eucalyptol extraction efficiency and control system |
-
2021
- 2021-08-13 CN CN202110930580.4A patent/CN113648945B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130068587A1 (en) * | 2010-05-18 | 2013-03-21 | Envirollea Inc. | Thermal processing reactor for mixtures, fabrication of the reactor, processes using the reactors and uses of the products obtained |
| US20110143237A1 (en) * | 2010-10-28 | 2011-06-16 | Clearedge Power, Inc. | Radiative Heat Transfer via Fins in a Steam Reformer |
| CN102085453A (en) * | 2010-12-15 | 2011-06-08 | 杭州银轮科技有限公司 | Mixing device for diesel engine urea SCR system |
| US20190070579A1 (en) * | 2016-04-12 | 2019-03-07 | Basf Antwerren Nv | Reactor for a cracking furnace |
| CN105910080A (en) * | 2016-04-13 | 2016-08-31 | 湖南伟图科技有限公司 | Mist-spray rotary steam generator |
| CN109724446A (en) * | 2017-10-27 | 2019-05-07 | 中国石油化工股份有限公司 | Augmentation of heat transfer pipe and pyrolysis furnace |
| CN108246210A (en) * | 2018-01-30 | 2018-07-06 | 浙江工业大学 | A kind of new type high temperature cracking reaction device |
| CN208606152U (en) * | 2018-06-19 | 2019-03-15 | 代天荣 | High-frequency induction steam generator |
| CN112450839A (en) * | 2020-12-11 | 2021-03-09 | 追创科技(苏州)有限公司 | Nozzle assembly and cleaning equipment with same |
| CN113082752A (en) * | 2021-04-09 | 2021-07-09 | 云南国润香料制造有限公司 | Sectional type filler rectification device capable of improving eucalyptol extraction efficiency and control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114324704A (en) * | 2021-12-29 | 2022-04-12 | 杭州谱育科技发展有限公司 | Chromatographic detection device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113648945B (en) | 2023-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113648945B (en) | Regulation and control method of device capable of achieving sufficient heating and temperature rise of micro-droplets | |
| RU2319093C1 (en) | Utilizer of the heat with the boiling layer | |
| CN104353405B (en) | A kind of horizontal three-dimensional percussion flow mixing reactor | |
| CN106669582B (en) | A kind of multiple groups layering symmetrical baffle plate formula percussion flow mixing reactor | |
| CN104338492B (en) | Multi-group layered submerged impinging steam reactor | |
| CN110787766B (en) | Tower type reaction device and process for preparing fatty acid butyl ester | |
| CN105920861A (en) | Spray distillation device | |
| CN111701262A (en) | High-efficiency scraper film evaporation device | |
| CN101813889B (en) | Spraying device of liquid material thin film and spraying method thereof | |
| CN101435663B (en) | Reversed flow heat transfer eddy flow secondary atomizing induced draft cooling tower | |
| JP6836426B2 (en) | Spray fine particle manufacturing equipment | |
| US11407948B2 (en) | High-temperature pyrolysis reaction device | |
| CN201364040Y (en) | Packless cyclone atomized cooling tower | |
| US2467470A (en) | Manufacture of spherical particles | |
| CN214319170U (en) | Rectifying device is used in production of 3-methyl-2-ethyl crotonate | |
| CN102580333B (en) | Evaporation system for pressure reduction and film formation through vacuum rotation | |
| CN112973164B (en) | High-efficiency sucrose 6 ester continuous production equipment and method | |
| CN107188258B (en) | Evaporation device applied to desulfurization wastewater and control method | |
| CN210145526U (en) | Counter-flow falling-film evaporator and liquid film distributor thereof | |
| KR101645472B1 (en) | Multifunctional chemical equipment | |
| CN217392407U (en) | Reaction kettle | |
| CN211836369U (en) | Waste heat utilization's distillation plant of waste heat utilization | |
| CN213433022U (en) | High-efficient scraper blade film evaporator | |
| CN215611604U (en) | Acid dissolution reactor and equipment for preparing nickel sulfate | |
| KR101879020B1 (en) | A multi-phase reactor system with slinger liquid reflux distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |