CN115738985A - Tubular reaction system for producing ultra-low molecular weight povidone - Google Patents
Tubular reaction system for producing ultra-low molecular weight povidone Download PDFInfo
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- CN115738985A CN115738985A CN202211326397.4A CN202211326397A CN115738985A CN 115738985 A CN115738985 A CN 115738985A CN 202211326397 A CN202211326397 A CN 202211326397A CN 115738985 A CN115738985 A CN 115738985A
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 58
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 title claims abstract description 26
- 229920000036 polyvinylpyrrolidone Polymers 0.000 title claims abstract description 26
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229940069328 povidone Drugs 0.000 title claims abstract description 25
- 238000001816 cooling Methods 0.000 claims abstract description 52
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000004321 preservation Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000000926 separation method Methods 0.000 claims description 38
- 239000000110 cooling liquid Substances 0.000 claims description 36
- 239000002826 coolant Substances 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 25
- 229920000742 Cotton Polymers 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 18
- 238000010521 absorption reaction Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000000945 filler Substances 0.000 claims description 8
- 230000000630 rising effect Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000002745 absorbent Effects 0.000 claims 1
- 239000002250 absorbent Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 6
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- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 230000001174 ascending effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241001075561 Fioria Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- 238000009826 distribution Methods 0.000 description 1
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- 239000012535 impurity Substances 0.000 description 1
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Abstract
The invention discloses a tubular reaction system for producing povidone with ultra-low molecular weight, which comprises a raw material heating section, a polymerization reaction temperature control section, a heat preservation depth reaction section and a cooling section; the raw material and auxiliary material heating section, the polymerization reaction temperature control section, the heat preservation depth reaction section and the cooling section are communicated in series; the raw material and auxiliary material heating section is a linear pipe section, and a heating jacket is arranged on the outer side of the linear pipe section; the polymerization temperature control section is a U-shaped pipe section, and a temperature control jacket is arranged on the outer side of the U-shaped pipe section; the heat-preservation depth reaction section is a linear pipe section, and a heat-preservation jacket is arranged on the outer side of the linear pipe section; the cooling section is a linear pipe section, and a cooling jacket is arranged on the outer side of the linear pipe section. The invention can realize the temperature rise of the initial material, can effectively realize the complete controllable improvement of the heat release of the subsequent polymerization reaction, and realizes the safety of the polymerization reaction operation by matching with the use of a safety valve. The invention overcomes the defects of the prior art, has reasonable design and compact structure, and has higher social use value and application prospect.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a tubular reaction system for producing povidone with ultra-low molecular weight.
Background
The tubular reactor is a continuous operation reactor with tubular shape and large length-diameter ratio, and has the characteristics of small volume, large specific surface area, high heat exchange efficiency and the like. In addition, the tubular reactor can realize the operation of sectional temperature control, has high safety, is very suitable for the reaction with high reaction rate and large heat effect, and is particularly suitable for pressurized reaction.
The ultra-low molecular weight povidone is a povidone product with the K value of less than 20, and is a strong exothermic reaction during povidone production, the polymerization heat release is huge, particularly, the polymerization rate is extremely high during the ultra-low molecular weight povidone production process, and the heat release speed is more than ten times of the heat release of the conventional molecular weight povidone polymerization reaction. And when the ultra-low molecular weight povidone is produced, the process conditions also need high-temperature pressurized operation, and the reaction temperature and the reaction pressure of the system are higher.
The existing production of the ultra-low molecular weight povidone mainly adopts a reaction kettle to carry out intermittent reaction, and in the heat release process of polymerization reaction, because the heat exchange area of the kettle is insufficient, the temperature is more easily out of control after the polymerization reaction begins due to the self-acceleration effect of the polymerization reaction, the molecular weight of the polymer is difficult to control, and the color of the material is also yellowed. In addition, because the polymerization reaction is operated under pressure, temperature runaway has great potential safety hazard. When a reaction kettle with a small volume is used, although the temperature control is helped to a certain extent, the batch reaction needs to be repeatedly fed and discharged, so that the production efficiency is influenced.
And because the heat transfer is frequent, therefore the demand of coolant liquid is very big, current coolant liquid is the mode through circulation cooling, recycle, the mode of circulation cooling is through the mode that forced air cooling and refrigeration pipe cooling combined together, the realization is to the cooling that has the uniform temperature coolant liquid, and the joining of forced air cooling, although heat dissipation that can be timely, but take away the moisture in the coolant liquid very easily, thereby the loss of coolant liquid has been caused, cause the not enough of coolant liquid volume, in order to guarantee holistic steady operation, need often carry out the make-up water, lead to very trouble, influence holistic production efficiency.
Therefore, the inventor provides a tubular reaction system for producing povidone with ultra-low molecular weight, which is developed based on the design, development and practical production experience of the related industry for many years, and is improved based on the existing structure and deficiency, so as to achieve the purpose of higher practical value.
Disclosure of Invention
In order to solve the problems that the existing method for producing the ultra-low molecular weight povidone mainly adopts a reaction kettle to carry out intermittent reaction, and the temperature is easy to lose control due to insufficient heat exchange area of the kettle and self-acceleration effect of polymerization reaction after the polymerization reaction starts in the heat release process of the polymerization reaction, so that the molecular weight of a polymer is difficult to control, and the color of a material is yellowed. In addition, because the polymerization reaction is operated under pressure, temperature runaway has great potential safety hazard. When a reaction kettle with a small volume is used, although the reaction kettle has certain help for temperature control, the batch reaction needs repeated feeding and discharging so as to influence the production efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tubular reaction system for producing ultra-low molecular weight povidone comprises a raw material heating section, a polymerization reaction temperature control section, a heat preservation depth reaction section and a cooling section; the raw material and auxiliary material temperature-rising section, the polymerization reaction temperature-controlling section, the heat-preservation depth reaction section and the temperature-reducing section are mutually communicated in series; the raw and auxiliary material heating section is a linear pipe section, and a heating jacket for heating the raw and auxiliary materials to the polymerization initiation temperature is arranged on the outer side of the linear pipe section; the polymerization reaction temperature control section is a U-shaped pipe section, and a temperature control jacket which takes out a large amount of polymerization reaction heat in a cooling liquid heat exchange mode is arranged on the outer side of the U-shaped pipe section; the heat-preservation depth reaction section is a linear pipe section, and a heat-preservation jacket for improving the conversion rate of raw materials by controlling the temperature of the raw materials in the linear pipe section is arranged on the outer side of the linear pipe section; the cooling section is a linear pipe section, and a cooling jacket for cooling and discharging materials in the pipe section in a cooling liquid heat exchange cooling mode is arranged on the outer side of the linear pipe section;
wherein, static mixed fillers are filled in the raw material and auxiliary material temperature rising section, the polymerization reaction temperature control section, the heat preservation depth reaction section and the temperature reduction section.
Preferably, adjacent U-shaped pipe sections and straight pipe sections are provided with U-shaped elbows for communication.
Preferably, a thermometer and a pressure gauge for monitoring the temperature and the pressure of the materials in the corresponding pipe sections in real time are arranged in the raw material and auxiliary material heating section, the polymerization reaction temperature control section, the heat preservation depth reaction section and the temperature reduction section.
Preferably, the raw and auxiliary materials section of heating feed inlet department is equipped with the high pressure measuring pump that is used for adjusting raw and auxiliary materials entering pipeline internal volume, be equipped with between high pressure measuring pump and the pipeline feed end and be connected and be used for absorbing metal collapsible tube.
Preferably, the heating jacket, the temperature control jacket, the heat preservation jacket and the temperature reduction jacket are all provided with jacket interfaces for heat exchange raw materials to enter and exit, the heat exchange raw materials in the heating jacket and the heat preservation jacket adopt one of steam or heat conduction oil, and the cooling liquid in the temperature control jacket and the temperature reduction jacket adopts one of coolant or circulating water.
Preferably, the static mixed filler is one of SK type or SX type.
Preferably, still including being used for in time cooling down and in time recycling the circulation jar for controlling the temperature and pressing from both sides cover heat transfer back coolant liquid for the temperature, one side at circulation jar middle part is equipped with the inlet pipe that is used for the coolant liquid to get into, and circulation jar bottom is equipped with and is used for coolant liquid exhaust discharging pipe, is located the circulation jar the inlet pipe tip is equipped with rotatable and is used for spilling the flow equalizing pipe in the circulation jar with coolant liquid evenly distributed, circulation jar bottom is equipped with and is used for the refrigerated cooling pipe of cooling liquid, and is equipped with the exhaust hole that is used for air current exhaust above the circulation jar, is located the flow equalizing pipe top be equipped with fixed connection's separation block in the circulation jar, be equipped with the run-through formula in the separation block and be square separation tank, be equipped with in the separation tank and be annular and rotatable filter mesh belt, filter belt upper and lower surface all is equipped with and is used for gaseous moisture to absorb the absorption cotton layer that prevents that the coolant liquid from running off.
Further, all be equipped with rotatable dancer rools on the inner wall of disengagement tank both sides, the dancer rools is right trapezoid and distributes, the filter mesh belt is the tight form setting in the dancer rools outside, the rotation of dancer rools can drive the filter mesh belt and rotate, be equipped with a plurality of stripper plates that are used for in time the extrusion separation with the adsorbed moisture on absorption cotton layer on the wall of disengagement tank both sides.
Furthermore, the adjusting roller comprises two first driven rollers, two second driven rollers and a driving roller, the two first driven rollers are arranged at the upper end and the lower end of one side of the separation groove, the driving roller and the second driven rollers are arranged at the upper end and the lower end of the other side of the separation groove, the first driven rollers and the second driven rollers are respectively connected with the inner walls of the corresponding separation grooves in a rotating mode, a driving groove is formed in the separation block, a driving motor used for driving the driving roller to rotate is arranged in the driving groove, and the output end of the driving motor is connected with one end of the driving roller.
Furthermore, separating tank one side is equipped with the standing groove that is the U-shaped and is used for drive roll and second driven voller to place, is located between first driven voller and the second driven voller be equipped with a plurality of third driven voller that are crisscross interval distribution on the inner wall of separating tank both sides, the filter mesh belt passes corresponding third driven voller in proper order, the filter mesh belt of third driven voller in with the separating tank is the zigzag form and distributes, be equipped with a plurality ofly on the separating tank inner wall and be used for first driven voller, third driven voller to hide respectively and place and be circular-arc holding chamber, be equipped with a plurality of guiding gutters in the separator block, the guiding gutter sets up respectively in corresponding holding chamber and standing groove, and the guiding gutter communicates with the standing groove of corresponding holding chamber and second driven voller department respectively, the stripper plate sets up in the guiding gutter, and the distance between stripper plate tip and corresponding second driven voller, first driven voller and the third driven voller makes the filter mesh belt pass through just.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can realize the temperature rise of the initial material, can effectively realize the complete controllable improvement of the heat release of the subsequent polymerization reaction, and realizes the safety of the polymerization reaction operation by matching with the use of a safety valve. The tubular reactor can also supplement an initiator to realize the later-stage deep reaction through a heat-preservation deep reaction section, and the conversion rate of materials and the product quality are improved. The reactor also realizes the production of the ultra-low molecular weight povidone by continuous feeding and continuous discharging, and improves the production efficiency.
2. The design of the circulating tank can timely provide cooling liquid for the temperature control jacket and the cooling jacket after cooling the cooling liquid with a certain temperature after heat exchange through the circulating tank, so that the stability of the temperature control jacket and the cooling jacket for temperature control is ensured, and the design of the flow equalizing pipe can ensure that the cooling liquid with a certain temperature can be uniformly sprayed in the circulating tank through the flow equalizing pipe, so that the temperature in the cooling liquid can be dispersed through air, the cooling efficiency of the cooling liquid is improved, and the energy loss of the cooling pipe is reduced; the exhaust hole can be convenient for the discharge of hot gas flow, and the design on separating tank, filter mesh belt and absorption cotton layer can carry out timely absorption through the moisture in the cotton layer of absorption will the steam that rises, the effectual loss that reduces the coolant liquid, and filter mesh belt's rotatable, can be timely through filter mesh belt pivoted mode with the filter mesh belt shift after the absorption, guarantee the interior filter screen area of separating tank and go up the adsorption efficiency to moisture.
In conclusion, the invention overcomes the defects of the prior art, has reasonable design and compact structure, and has higher social use value and application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of the tubular reaction system for producing ultra-low molecular weight povidone in accordance with the present invention.
Fig. 2 is a schematic perspective view of the circulation tank of the present invention.
FIG. 3 is a schematic view of the internal structure of the circulation tank of the present invention in a front view.
Fig. 4 is an enlarged view of the point a in fig. 3 according to the present invention.
Fig. 5 is a schematic perspective view of a mesh belt according to the present invention.
In the figure: 1. a circulation tank; 11. an exhaust hole; 12. a feed pipe; 13. a discharge pipe; 14. a flow equalizing pipe; 141. rotating the disc; 142. a flow equalizing hole; 143. rotating the tube; 144. a fixing rod; 15. separating the blocks; 151. a third driven roller; 152. a drive roll; 153. a placement groove; 154. a separation tank; 155. a first driven roller; 156. a second driven roller; 157. an accommodating cavity; 158. a diversion trench; 159. a pressing plate; 16. a support frame; 17. a filter mesh belt; 171. filtering meshes; 2. heating section of raw materials and auxiliary materials; 21. a high pressure metering pump; 22. a metal hose; 23. a heating jacket; 3. a polymerization temperature control section; 31. a temperature control jacket; 4. a heat-preserving deep reaction section; 41. a heat-preserving jacket; 42. an initiator replenishment interface; 5. a cooling section; 51. a cooling jacket; 52. a safety valve; 53. a pressure regulating valve; 6. a sampling port; 7. a jacket interface; 8. a pressure gauge; 9. a thermometer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, the tubular reaction system for producing the povidone with ultra-low molecular weight comprises four parts, including a raw material and auxiliary material temperature-raising section 2, a polymerization temperature-controlling section 3, a heat-preserving deep reaction section 4 and a temperature-reducing section 5;
the raw and auxiliary material heating section 2 is a linear pipe section, the heating of the raw and auxiliary materials to the initiation temperature of polymerization reaction can be realized by using a heating jacket 23, the section is composed of a high-pressure metering pump 21, a metal hose 22, a pipeline with a flange joint, the heating jacket 23, a jacket interface 7, a thermometer 9, a pressure gauge 8 and other instruments, the high-pressure metering pump 21 can adjust the amount of the raw and auxiliary materials entering a reactor, the metal hose 22 mainly plays a role in shock absorption, a temperature machine 9 and the pressure gauge 8 at an inlet can test the temperature and pressure of materials entering, the temperature of the heated materials can be monitored at an outlet, static mixed fillers are filled in the pipeline, and steam, heat conducting oil and the like can be filled in the heating jacket 23;
the polymerization temperature control section 3 is a U-shaped pipe section, can realize the polymerization process with ultra-low molecular weight, and mainly takes a large amount of polymerization heat out of a polymerization system through circulating cooling water or other coolants in a temperature control jacket 31 so as to realize the control of polymerization temperature, and the section is composed of a pipeline with a flange joint, the temperature control jacket 31, a jacket interface 7, instruments such as a thermometer 9, a pressure gauge 8 and the like, a sampling port 6 and a pipeline filled with static mixed fillers. The inlet can read the pressure of the entering materials, the outlet can read the temperature of the temperature-controlled materials, the sampling port 6 can sample and test products on line for adjusting process parameters and the like, the temperature control jacket 31 can be internally provided with circulating cooling water or other coolants, and the polymerization temperature control section 3 can be formed by a plurality of sections of pipe sections which are connected in series;
the heat-preservation deep reaction section 4 can improve the conversion rate of raw materials and reduce impurities, and the linear pipe section is composed of a pipeline with a flange joint, a heat-preservation jacket 41, a jacket interface 7, instruments such as a thermometer 9 and a pressure gauge 8, a sampling port 6, an initiator supplement interface 42 and static mixed filler filled in the pipeline. The thermometer 9 and the pressure gauge 8 can judge the heat preservation temperature and the pressure of the material, and the sampling port 6 can sample and analyze the product for adjusting the process parameters and the like. The heat-insulating jacket 41 can be filled with steam, heat-conducting oil and the like, the initiator supplementing interface 42 can continuously supplement the initiator into the system according to product analysis data so as to continuously perform reaction, and the heat-insulating deep reaction section can be formed by connecting multiple sections in series.
The cooling section 5 is the cooling ejection of compact that realizes the material, this straight line pipeline section is by the pipeline of flanged joint, cooling jacket 51 and jacket interface 7, instruments such as thermometer 9 and manometer 8, sample connection 6, the static mixed filler of intussuseption, relief valve 52 and pressure regulating valve 53 are constituteed, can be recirculated cooling water in the temperature control jacket 31, sample connection 6 can sample the analytical product property ability, material temperature and pressure before the ejection of compact can be judged to thermometer 9 and manometer 8, pressure regulating valve 53 can adjust the reaction pressure of system, relief valve 52 can automatic pressure release and ensure reaction system safety.
Further, the static mixing filler is composed of a static mixer, the static mixer adopts SK model or SX model, the SX model is as follows: the units are formed into a plurality of X-shaped units by crossed horizontal bars according to a certain rule. SK model: is formed by assembling and welding left and right twisted spiral sheets of a single pore passage.
Example 2
The same points as those in embodiment 1 are not described, and the differences from embodiment 1 are:
referring to fig. 2-5, the system further comprises a circulation tank 1 for timely cooling and timely recycling the cooling liquid after heat exchange between the temperature control jacket 31 and the temperature reduction jacket 51, wherein a feed pipe 12 for feeding the cooling liquid is arranged on one side of the middle part of the circulation tank 1, a discharge pipe 13 for discharging the cooling liquid is arranged at the bottom of the circulation tank 1, a rotatable flow equalizing pipe is arranged at the end part of the feed pipe 12 in the circulation tank 1, the flow equalizing pipe is used for uniformly distributing and spraying the cooling liquid in the circulation tank 1, a refrigeration pipe for cooling the cooling liquid is arranged at the bottom of the circulation tank 1, an exhaust hole 11 for discharging air flow is arranged above the circulation tank 1, a separation block 15 fixedly connected with the circulation tank 1 is arranged above the flow equalizing pipe 14, a penetrating and square separation tank 154 is arranged in the separation block 15, an annular and rotatable filter mesh belt 17 is arranged in the separation tank 154, and an absorbent cotton layer for absorbing moisture in the gas to prevent the cooling liquid from losing is arranged on the upper and lower surfaces of the filter mesh belt 17. The design of the circulating tank 1 can timely provide cooling liquid for the temperature control jacket 31 and the temperature reduction jacket 51 after cooling the cooling liquid with a certain temperature after heat exchange cooling through the circulating tank 1, so that the stability of the temperature control jacket 31 and the temperature reduction jacket 51 on temperature control is ensured, and the design of the flow equalizing pipe 14 can enable the cooling liquid with a certain temperature to be uniformly sprayed in the circulating tank 1 through the flow equalizing pipe 14, so that the temperature in the cooling liquid can be dispersed through air, the cooling efficiency of the cooling liquid is improved, and the energy loss of the cooling pipe is reduced; exhaust hole 11 can be convenient for the discharge of hot gas flow, and separating tank 154, filter mesh belt 17 and the design on absorption cotton layer can carry out timely absorption through the moisture in the steam that the absorption cotton layer will rise, the effectual loss that reduces the coolant liquid, and filter mesh belt 17 rotatable, can be timely through filter mesh belt 17 pivoted mode, filter mesh belt 17 after can be timely will adsorbing shifts, guarantees the adsorption efficiency to moisture on the filter mesh belt 17 in the separating tank 154. Wherein, the bottom of the circulation tank 1 is provided with a plurality of supporting frames 16 for supporting and fixing.
As a feasible embodiment, be located the separation piece 15 below the circulation tank 1 middle part is equipped with fixed connection's rotatory pipe 143, rotatory pipe 143 bottom is equipped with the rotary disk 141 that rotates sealing connection and communicate with rotatory pipe 143, flow equalizing pipe 14 evenly distributed is in the rotary disk 141 outside, and flow equalizing pipe 14 and rotary disk 141 inside intercommunication, is located with one side flow equalizing pipe 14 oblique below all is equipped with a plurality of evenly distributed's the hole 142 that flow equalizes, be equipped with a plurality of fixed connection's dead lever 144 on the circulation tank 1 inner wall, dead lever 144 respectively with corresponding rotatory pipe 143 fixed connection, communicate between inlet pipe 12 tip and the rotatory pipe 143, rotatory pipe 143 upper end is equipped with fixed connection and is the rotor plate of fan-leaf form. The rotating pipe 143 fixedly connected can suspend the rotating disc 141 in the circulating tank 1 in a rotating manner, and the design of the flow equalizing pipe 14 and the flow equalizing holes 142 drives and pushes the flow equalizing pipe 14 to rotate by using the reverse acting force of the liquid sprayed out through the flow equalizing holes 142, so that the flow equalizing pipe 14 uniformly sprays the cooling liquid in the circulating tank 1, the hot gas in the cooling liquid can be better separated, and the heat dissipation efficiency is improved; the addition of the rotating plate enables the flow equalizing pipe 14 to form an ascending air flow by using the unique structure of the rotating plate in the rotating process, so that the hot air flow emitted by the cooling liquid can be quickly driven to move upwards, and the emission efficiency of the hot air flow is improved.
As a feasible embodiment, the inner walls of the two sides of the separation tank 154 are provided with rotatable adjusting rollers, the adjusting rollers are distributed in a right trapezoid shape, the filter mesh belt 17 is arranged outside the adjusting rollers in a tight manner, the rotation of the adjusting rollers can drive the filter mesh belt 17 to rotate, and the two side walls of the separation tank 154 are provided with a plurality of squeezing plates 159 for squeezing and separating the moisture absorbed by the absorbent cotton layer in time. The design of dancer rools can drive the periodic rotation of screen belt 17, can make the absorption cotton layer on the screen belt 17 adsorb the back like this, through the rotation of screen belt 17, including stripper plate 159's combination to the timely extrusion separation of the cotton layer surface adsorbed moisture that will adsorb that can be timely, thereby guaranteed the absorption efficiency of absorption cotton layer to moisture, the better loss that reduces the moisture.
As a possible embodiment, the adjusting roller includes a first driven roller 155, a second driven roller 156, and a driving roller 152, the number of the first driven rollers 155 is two, the first driven rollers 155 are disposed at the upper and lower ends of one side of the separating groove 154, the driving roller 152 and the second driven rollers 156 are disposed at the upper and lower ends of the other side of the separating groove 154, the first driven rollers 155 and the second driven rollers 156 are respectively rotatably connected to the inner walls of the corresponding separating groove 154, a driving groove is disposed in the separating block 15, a driving motor for driving the driving roller 152 to rotate is disposed in the driving groove, the output end of the driving motor is connected to one end of the driving roller 152, a U-shaped placing groove 153 for placing the driving roller 152 and the second driven rollers 156 is disposed at one side of the separating groove 154, a plurality of third driven rollers 151 disposed at staggered intervals are disposed on the inner walls of both sides of the separating groove 154 between the first driven rollers 155 and the second driven rollers 156, the filter mesh belt 17 sequentially passes through the corresponding third driven rollers 151, the third driven rollers 151 distribute the filter mesh belt 17 in the separation groove 154 in a zigzag manner, a plurality of accommodating cavities 157 which are used for hiding and placing the first driven rollers 155 and the third driven rollers 151 respectively are arranged on the inner wall of the separation groove 154, the separation block 15 is internally provided with a plurality of guide grooves 158, the guide grooves 158 are respectively arranged in the corresponding accommodating cavities 157 and the placing grooves 153, the guide grooves 158 are respectively communicated with the corresponding accommodating cavities 157 and the placing grooves 153 at the second driven rollers 156, the extrusion plates 159 are arranged in the guide grooves 158, and the distances between the end parts of the extrusion plates 159 and the corresponding second driven rollers 156, first driven rollers 155 and third driven rollers 151 enable the filter mesh belt 17 to pass through right. The first driven roller 155, the second driven roller 156, the third driven roller 151 and the driving roller 152 are designed to enable the filter mesh belt 17 to be in a zigzag shape in the separation groove 154, and to enable meshes on the filter mesh belt 17 to be distributed in the separation groove 154 in a staggered manner, so that the meshes inevitably contact with the filter mesh belt 17 in the air flow rising process, and the contact probability of an adsorption cotton layer and the rising air flow can be effectively improved, so that the moisture separation efficiency in the rising air flow can be effectively improved, the loss of the cooling liquid is further reduced, the replenishment frequency of the cooling liquid is reduced, and the timely recycling of the cooling liquid is ensured;
the design of the accommodating cavity 157 can hide the first driven roller 155 and the third driven roller 151, so that the passing area of the airflow in the separating groove 154 is ensured, and meanwhile, the design of the accommodating cavity 157 can enable the airflow to only pass through the filter mesh belt 17 in the rising process, and the airflow cannot pass through other places to be omitted. The driving motor can drive the driving roller 152 to rotate, so that the rotation of the filter mesh belt 17 is realized, in the embodiment, a plurality of conveying teeth meshed with the filter mesh holes 171 on the filter mesh belt 17 can be further arranged on the driving roller 152, and the meshing of the conveying teeth and the filter mesh holes 171 can be utilized, so that the driving roller 152 can better and more stably drive the rotation of the filter mesh belt 17.
This embodiment is when using:
firstly, a discharge pipe 13 is respectively communicated with a jacket interface 7 at a feeding end on a corresponding temperature control jacket 31 and a cooling jacket 51, then a feed pipe 12 is communicated with a jacket interface 7 at a discharging end on the corresponding temperature control jacket 31 and the corresponding cooling jacket 51, a conveying pump for conveying cooling liquid is arranged at the discharge pipe 13, when heat exchange and cooling are needed, the conveying pump is started to convey the cooling liquid into the temperature control jacket 31 and the cooling jacket 51 for cooling, after cooling, the cooling liquid with certain temperature is discharged through the feed pipe 12 and enters a flow equalizing pipe 14 in a circulating tank 1, and is sprayed out through a flow equalizing hole 142, and the flow equalizing pipe 14 can be driven to rotate along with the spraying of the cooling liquid from the flow equalizing hole 142, so that the cooling liquid is uniformly sprayed into the circulating tank 1 in a rotating shape, and the rotating plate is driven to rotate while the flow equalizing pipe 14 is driven to generate ascending air flow, and hot air can be driven to ascend in time;
when hot air flow rises to the separation tank 154, the hot air flow passes through the filter mesh belt 17, moisture in the hot air flow is adsorbed by the adsorbed cotton layer in time, and meanwhile, the driving motor is started to drive the driving roller 152 to rotate slowly, so that the filter mesh belt 17 rotates periodically in the separation tank 154, when the adsorbed cotton layer adsorbing moisture moves to the extrusion plate 159, the adsorbed cotton layer can be extruded by the extrusion plate 159, the moisture in the adsorbed cotton layer can be discharged in time, the absorption efficiency of the adsorbed cotton layer in the separation tank 154 on the moisture is ensured, and the loss of cooling liquid can be effectively reduced; the extruded cooling liquid enters the diversion trench 158 along with the extrusion plate 159 and flows back to the bottom of the circulation tank 1;
get into the coolant liquid of circulation tank 1 bottom, carry out cooling by the refrigerating pipe, steadily descend the coolant liquid to the value of settlement, then continue to flow back to through discharging pipe 13 and cool down in accuse temperature jacket 31 and the cooling jacket 51, because the unique design of circulation tank 1, reduced the loss of coolant liquid, can be timely for accuse temperature jacket 31 and cooling jacket 51 supply the coolant liquid, need not regularly supply extra coolant liquid in circulation tank 1 moreover.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; they may be mechanically coupled, directly coupled, or indirectly coupled through intervening agents, both internally and/or in any other manner known to those skilled in the art. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A tubular reaction system for producing ultra-low molecular weight povidone, characterized in that: comprises a raw material and auxiliary material temperature rising section (2), a polymerization reaction temperature control section (3), a heat preservation depth reaction section (4) and a temperature reduction section (5); the raw material and auxiliary material heating section (2), the polymerization reaction temperature control section (3), the heat preservation depth reaction section (4) and the cooling section (5) are communicated in series;
the raw and auxiliary material temperature-rising section (2) is a linear pipe section, and a heating jacket (23) for raising the temperature of the raw and auxiliary materials to the polymerization initiation temperature is arranged on the outer side of the linear pipe section;
the polymerization reaction temperature control section (3) is a U-shaped pipe section, and a temperature control jacket (31) which takes out a large amount of polymerization reaction heat in a cooling liquid heat exchange mode is arranged on the outer side of the U-shaped pipe section;
the heat-preservation depth reaction section (4) is a linear pipe section, and a heat-preservation jacket (41) for improving the conversion rate of raw materials by controlling the temperature of the raw materials in the linear pipe section is arranged on the outer side of the linear pipe section;
the cooling section (5) is a linear pipe section, and a cooling jacket (51) for cooling and discharging materials in the pipe section in a cooling liquid heat exchange cooling mode is arranged on the outer side of the linear pipe section;
wherein the raw material and auxiliary material heating section (2), the polymerization reaction temperature control section (3), the heat preservation depth reaction section (4) and the cooling section (5) are filled with static mixed fillers.
2. The tubular reaction system for the production of ultra low molecular weight povidone of claim 1 in which: and U-shaped elbows for communication are arranged on the adjacent U-shaped pipe sections and the straight pipe sections.
3. The tubular reaction system for the production of ultra low molecular weight povidone of claim 1 wherein: the raw material and auxiliary material temperature-raising section (2), the polymerization reaction temperature-controlling section (3), the heat-preservation depth reaction section (4) and the temperature-reducing section (5) are internally provided with a thermometer (9) and a pressure gauge (8) which are used for monitoring the temperature and the pressure of materials in the corresponding pipe sections in real time.
4. The tubular reaction system for the production of ultra low molecular weight povidone of claim 1 wherein: the raw and auxiliary materials section of heating (2) feed inlet department is equipped with high-pressure measuring pump (21) that are used for adjusting raw and auxiliary materials entering pipeline internal volume, be equipped with between high-pressure measuring pump (21) and the pipeline feed end and be connected and be used for absorbing metal collapsible tube (22).
5. The tubular reaction system for the production of ultra low molecular weight povidone of claim 1 wherein: the heating jacket (23), the temperature control jacket (31), the heat preservation jacket (41) and the temperature reduction jacket (51) are all provided with jacket interfaces (7) for heat exchange raw materials to enter and exit, the heat exchange raw materials in the heating jacket (23) and the heat preservation jacket (41) adopt one of steam or heat conduction oil, and cooling liquid in the temperature control jacket (31) and the temperature reduction jacket (51) adopts one of coolant or circulating water.
6. The tubular reaction system for the production of ultra low molecular weight povidone of claim 1 wherein: still including being used for in time cooling down and in time recycling the circulation tank (1) for temperature control jacket (31) and cooling jacket (51) heat transfer back coolant liquid, one side at circulation tank (1) middle part is equipped with inlet pipe (12) that are used for the coolant liquid to get into, and circulation tank (1) bottom is equipped with and is used for coolant liquid exhaust discharging pipe (13), is located circulation tank (1) inlet pipe (12) tip is equipped with rotatable and is used for spilling the flow equalizing pipe (14) in circulation tank (1) with coolant liquid evenly distributed, circulation tank (1) bottom is equipped with and is used for cooling down refrigerated cooling tube to coolant liquid, and is equipped with above circulation tank (1) and is used for air current exhaust hole (11), is located flow equalizing pipe (14) top be equipped with fixed connection's separation block (15) in circulation tank (1), be equipped with the run-through formula in separation block (15) and be square separation tank (154), be equipped with in the separation tank (154) and be annular and rotatable filter mesh belt (17), the surface all is equipped with the absorption cotton layer that is arranged in the gas and absorbs water and prevents the coolant liquid and runs off about filter mesh belt (17).
7. The tubular reaction system for the production of ultra low molecular weight povidone of claim 6 wherein: all be equipped with rotatable dancer rools on separating tank (154) both sides inner wall, the dancer rools is right trapezoid and distributes, filter mesh belt (17) are the form setting of tightening in the dancer rools outside, the rotation of dancer rools can drive filter mesh belt (17) and rotate, be equipped with a plurality of stripper plates (159) that are used for in time the extrusion separation with the absorbent moisture in absorption cotton layer on separating tank (154) both sides wall.
8. The tubular reaction system for the production of ultra low molecular weight povidone of claim 6 in which: the adjusting roller comprises a first driven roller (155), a second driven roller (156) and a driving roller (152), the number of the first driven roller (155) is two, the first driven roller (155) is arranged at the upper end and the lower end of one side of the separation groove (154), the driving roller (152) and the first driven roller (155) are arranged at the upper end and the lower end of the other side of the separation groove (154), the first driven roller (155) and the second driven roller (156) are respectively in rotating connection with the inner wall of the corresponding separation groove (154), a driving groove is formed in the separation block (15), a driving motor used for driving the driving roller (152) to rotate is arranged in the driving groove, and the output end of the driving motor is connected with one end of the driving roller (152).
9. The tubular reaction system for the production of ultra low molecular weight povidone of claim 8 in which: a U-shaped placing groove (153) for placing a driving roller (152) and a second driven roller (156) is arranged on one side of the separating groove (154), a plurality of third driven rollers (151) which are distributed at intervals are arranged on the inner walls of two sides of the separating groove (154) between the first driven roller (155) and the second driven roller (156), the filter mesh belt (17) sequentially passes through corresponding third driven rollers (151), the third driven roller (151) distributes the filter mesh belt (17) in the separation groove (154) in a zigzag shape, a plurality of arc-shaped accommodating cavities (157) which are respectively used for hiding the first driven roller (155) and the third driven roller (151) are arranged on the inner wall of the separation groove (154), a plurality of flow guide grooves (158) are arranged in the separating block (15), the flow guide grooves (158) are respectively arranged in the corresponding accommodating cavity (157) and the placing groove (153), the guide groove (158) is respectively communicated with the corresponding accommodating cavity (157) and the placing groove (153) at the second driven roller (156), the extrusion plate (159) is arranged in the guide groove (158), and the distance between the end of the pressing plate (159) and the corresponding second driven roller (156), first driven roller (155) and third driven roller (151) is such that the mesh belt (17) passes through.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211326397.4A CN115738985A (en) | 2022-10-27 | 2022-10-27 | Tubular reaction system for producing ultra-low molecular weight povidone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211326397.4A CN115738985A (en) | 2022-10-27 | 2022-10-27 | Tubular reaction system for producing ultra-low molecular weight povidone |
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| CN115738985A true CN115738985A (en) | 2023-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211326397.4A Pending CN115738985A (en) | 2022-10-27 | 2022-10-27 | Tubular reaction system for producing ultra-low molecular weight povidone |
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| CN210357188U (en) * | 2019-06-12 | 2020-04-21 | 安徽红太阳新材料有限公司 | Continuous tubular reaction equipment |
| CN112999813A (en) * | 2021-03-03 | 2021-06-22 | 界首市宏佳塑业有限公司 | Dust and tail gas treatment device for granulation workshop for regenerated modified plastic particles |
| CN214233980U (en) * | 2020-11-25 | 2021-09-21 | 张以梅 | Continuous tubular oxidation reactor for p-nitrobenzoic acid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4402914A (en) * | 1981-07-10 | 1983-09-06 | Eckhoff Paul S | Apparatus for continuous production of emulsions |
| CN202881276U (en) * | 2012-10-31 | 2013-04-17 | 福州大北农生物技术有限公司 | Equipment for low-temperature vaccine antigen inactivation process |
| CN103333278A (en) * | 2013-01-30 | 2013-10-02 | 应悦 | A device and a preparation technology for preparing fluoropolymers and fluorocopolymers |
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