CN212819825U - Disc reactor with scraper device - Google Patents
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- CN212819825U CN212819825U CN202020647394.0U CN202020647394U CN212819825U CN 212819825 U CN212819825 U CN 212819825U CN 202020647394 U CN202020647394 U CN 202020647394U CN 212819825 U CN212819825 U CN 212819825U
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Abstract
The utility model relates to the field of polymer equipment, and discloses a disc reactor with a scraper device, which comprises a horizontal cylindrical shell, a rotating shaft and a plurality of annular discs; the rotating shaft is transversely fixed at two ends in the horizontal cylindrical shell, and the plurality of annular discs are axially fixed on the rotating shaft in a serial form; a feed inlet and a discharge outlet are respectively arranged at two ends of the bottom of the horizontal cylindrical shell, and a gas phase port is also arranged at the side of the discharge outlet of the horizontal cylindrical shell; and a scraper device is arranged between a plurality of adjacent annular disks in the horizontal cylindrical shell, and the top of the scraper device is higher than the material liquid level during reaction. The utility model discloses be equipped with a plurality of groups scraper device between the annular disc that is close to discharge gate side among the disc reactor, make the polymer of high viscosity can continuously update the liquid film, provide effectively and mix, mass transfer effect, promoted disc reactor's productivity effect.
Description
Technical Field
The utility model relates to a polymer reaction equipment field especially relates to a take disc reactor of scraper device.
Background
The disc reactor is a key device in the production of polymers such as polyester, taking polyester polymerization as an example, and is a final polycondensation reactor for polyester polymerization, polyester prepolymer from a pre-polycondensation reactor enters from a feed inlet at the bottom of the disc reactor, materials are continuously polymerized in a kettle through continuous stirring of an annular disc stirrer, the viscosity of the materials is continuously increased, and after the materials are kept for a certain time, the polymers meeting the product index requirements are discharged.
In the prior final polycondensation reactor for producing PTT, PET, PBT, PBAT, PBS and other types of polyesters, a circular disc reactor is a commonly used reactor, and the viscosity of the reactor for producing PET can reach 0.67 dL/g. When such a disc reactor produces higher viscosity polymers, the following occurs: when the viscosity of the polymer continuously condensed is continuously increased, the thickness of the polymer liquid film on the annular discs is correspondingly gradually increased, when the film thickness is increased to a certain degree, the polymer liquid films between the two annular discs are connected together, a large amount of high-viscosity polymer is adhered to the discs and rotates together with the discs, a solid rotation phenomenon is formed, the updating of the liquid films is also sharply reduced, and the mixed mass transfer effect is greatly reduced. Over time, the degradation rate of the polymer begins to be higher than the polymerization rate, so that the viscosity of the polymer begins to decrease again, and the partially degraded polymer gradually flows to a discharge port, which directly influences the quality of the produced product. On the other hand, when the polymer liquid film and the annular disc form a whole body to rotate together, the flow of the subsequent polymer is blocked, the surface renewal and polymerization reaction of the subsequent polymer are limited, and the viscosity of the subsequent polymer cannot be further increased.
SUMMERY OF THE UTILITY MODEL
To above-mentioned problem, in order to make the disc reactor can produce higher viscosity polymer, the utility model provides a take disc reactor of scraper device is equipped with a plurality of groups scraper device between the annular disc that is close to the discharge gate side in this disc reactor, makes the polymer of high viscosity constantly renew the liquid film, provides effectively and mixes, mass transfer effect, has promoted disc reactor's productivity effect.
The utility model discloses a concrete technical scheme does: a disc reactor with a scraper device comprises a horizontal cylindrical shell, a rotating shaft and a plurality of annular discs; the rotating shaft is transversely fixed at two ends in the horizontal cylindrical shell, and the plurality of annular discs are axially fixed on the rotating shaft in a serial form; the two ends of the bottom of the horizontal cylindrical shell are respectively provided with a feeding hole and a discharging hole, and the side of the discharging hole on the horizontal cylindrical shell is provided with a gas phase hole. And a scraper device is arranged between a plurality of adjacent annular disks in the horizontal cylindrical shell, and the top of the scraper device is higher than the material liquid level during reaction.
The utility model discloses an inside three district section that divide into from feed inlet to discharge gate direction axial of disc reactor: low-viscosity area, middle-viscosity area and high-viscosity area. The working principle is as follows: after a prepolymer from a pre-polycondensation kettle enters a disc reactor from a feed inlet, a polymer melt is adhered to the surface of an annular disc under the stirring of the continuously rotating annular disc, the prepolymer is driven by the annular disc to form an adhesive film and form a sagging film under the action of gravity, a stretching film is formed under the action of a scraper device vertical to the annular disc, and a new liquid film interface is continuously generated due to the continuous driving of the annular disc and the continuous sliding of a liquid film, so that the surface of the liquid film is continuously updated, small molecules generated in the polymerization process can be continuously separated from the melt, the polymerization reaction is continuously carried out, the polymerization degree is gradually increased, and the polymer melt with higher viscosity is obtained; the materials sequentially pass through the low-viscosity area, the middle-viscosity area and the high-viscosity area, and reach the required viscosity when reaching the discharge hole, so that a qualified product is produced.
Because the higher the viscosity of the polymer melt, the thicker the liquid film adhered on the annular disc, when a product with higher viscosity is produced by using the same reactor, the sum of the liquid films adhered between the two annular discs in a high-viscosity area is larger than the axial distance between the two annular discs, so that the polymer liquid films between the two annular discs are connected into a whole, a large amount of high-viscosity polymer is adhered on the annular discs and rotates together with the annular discs, the updating of the liquid films is also reduced sharply, the further progress of polymerization reaction is greatly hindered, and the liquid level at a discharge port is reduced or even the discharge port cannot be discharged; over time, this portion of the melt gradually degrades again, severely affecting product quality. In order to use original reactor to produce the new product of higher viscosity, the utility model discloses increase the scraper device that a plurality of groups are fixed in the barrel inner wall between the adjacent annular disc that is close to discharge gate department height and glues the district, there is relative motion for the scraper annular when annular disc is rotatory for the thick liquid membrane of adhesion on annular disc is cut apart by the scraper, has reduced liquid membrane thickness on the one hand and has increased the surface and has updated the area, and on the other hand high viscosity melt is being promoted by the scraper and is moving to the discharge gate direction, successfully produces the product of higher viscosity.
Preferably, the scraper device is arranged between a plurality of adjacent annular discs close to the discharge opening.
Preferably, the number of the scraper devices is 1/6-1/3 of the total number of the annular discs.
As the viscosity is higher during the polymerization of the polymer, the liquid surface updating rate is lower, and the viscosity value is slower to increase, the team of the invention preferably adds the scraper devices in an amount of 1/6-1/3 of the total number of the annular discs through careful research, so that the effect is optimal.
Preferably, the scraper device is a scraper or a combined scraper consisting of an upper scraper and a lower scraper.
Preferably, a plurality of different scraper devices can be designed according to the actual situation.
A scraper is arranged between two adjacent annular disks: the root of the scraper is fixed at the position, extending out of the liquid level, of the annular disc on the inner wall of the horizontal cylindrical shell in a rotating mode, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the scraper on the cross section of the annular disc and the head of the scraper is an obtuse angle (the angle alpha is greater than 90 degrees in figure 2).
When the scraper device is arranged as a single sheet, the position and the angle of the scraper device are strictly limited, so that the polymeric liquid film is pushed by the scraper to flow towards the inner side of the annular disc while being scraped to be thin, the material resistance is reduced (the polymeric liquid film is relatively open and is not blocked by the annular disc), the material can flow towards the discharge hole, the retention time of the material is effectively controlled, and the side reaction and the reverse reaction are prevented from exceeding the limit.
Be equipped with the combination scraper that constitutes by last scraper and lower scraper between two adjacent annular discs: the root part of the lower scraper is fixed at the part of the inner wall of the horizontal cylindrical shell, where the annular disc extends out of the liquid level in a rotating way, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the lower scraper on the cross section of the annular disc and the head part of the lower scraper is an obtuse angle (the angle alpha is more than 90 degrees in figure 3); the root of the upper scraper is fixed above the central line of the horizontal cylindrical shell, and the upper scraper is fixedly connected with the head of the lower scraper.
When the scraper devices are arranged in pairs, every two blades form a group, and the positions and angles of the two blades are strictly limited, so that the polymeric liquid film can be pushed to flow towards the inner side of the annular disc by the scraper while being scraped to be thin, the material resistance is reduced (the polymeric liquid film is relatively spacious and is not blocked by the annular disc), and the polymeric liquid film is favorable for the material to flow towards the direction of the discharge hole. The heads of the two scrapers are fixedly welded in a lap joint mode, and the two scrapers which are arranged in a triangular mode are very stable and not prone to deformation.
Preferably, the longitudinal generatrix of the scraper, the upper scraper or the lower scraper is parallel to the cross section of the annular disc, and the included angle between the cross section of the scraper, the upper scraper or the lower scraper and the surface of the annular disc is 15-45 degrees (namely, the beta angle in fig. 2-3 is 15-45 degrees).
The included angle between the cross section of the scraper and the surface of the annular disc is limited at the angle, so that the polymer liquid film can flow to the direction of the discharge port along the axial direction of the disc reactor while being scraped to be thin, the retention time of materials is effectively controlled, and the side reaction and the reverse reaction are prevented from exceeding the limit.
Preferably, the downward side of the cross section of the scraper, the upper scraper or the lower scraper is in a knife edge shape, and the upward side of the cross section of the scraper, the upper scraper or the lower scraper is in smooth transition.
The cross section of the scraper is designed into the shape, the lower part of the scraper is in a knife edge shape, so that the resistance of cutting materials can be reduced, and the upper part of the scraper is in smooth transition and is not easy to accumulate materials.
Preferably, the head of the blade, the upper blade or the lower blade is close to the rotating shaft.
The head of the scraper is close to the rotating shaft and can be used for scraping hanging materials on the rotating shaft.
Preferably, the inner part of the scraper, the upper scraper or the lower scraper is heated by a heat medium.
The heat medium is heated in the scraper, so that the flowability of the high-viscosity polymer can be further increased, and the polymerization reaction can be further enhanced.
Preferably, the horizontal cylindrical shell comprises an inner cylinder, a jacket cylinder arranged on the outer side of the inner cylinder and end covers sealed at two ends of the inner cylinder and the jacket cylinder; and the end cover is provided with a sealing device and a supporting device which are used for sealing and supporting the rotating shaft.
Preferably, a plurality of partition plates are arranged in the inner cylinder body, and the annular disc is axially divided into a plurality of chambers with communicated tops along the rotating shaft by the partition plates, so that the back mixing of materials in different chambers can be avoided, the plug flow is realized as far as possible, and the distribution range of the polymerization degree of the materials is reduced; meanwhile, holes can be formed in the partition plate according to the flowing requirement of the materials, so that the materials can smoothly complete axial flow.
Preferably, the axial distance between the adjacent annular disks is gradually increased from the feed inlet to the discharge outlet, the thickness of the liquid film adhered to the annular disks is gradually increased along with the continuous polymerization reaction, and the axial distance between the annular disks is correspondingly increased to adapt to the increase of the thickness of the liquid film.
Preferably, the annular disc is fixed to the shaft by a plurality of spokes.
Preferably, the center line of the horizontal cylindrical shell is higher than the axis of the rotating shaft, and the upper cavity is used as a gas channel. The polymerization reaction is also a process of continuously removing small molecules, gas-phase small molecules removed from the melt are collected with the cavity above the cylinder and are extracted from the gas-phase port above the discharge port of the cylinder, so that the vacuum degree in the reactor is ensured, and the polymerization reaction is continuously promoted.
Preferably, the horizontal cylindrical shell is oblong (the upper side and the lower side of the rectangle are respectively connected with a semicircle with the diameter of the cylinder), the center of the rotating shaft is concentric with the center of the lower semicircle of the inner cylinder, and the upper cavity is used as a gas channel.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses be equipped with the scraper device among the disc reactor, can scrape into the liquid film that thickness is little with the liquid film that adhesion thickness is big on annular disc, the liquid film thickness after scraping depends on the interval (can design as required/adjust) of scraper edge and annular disc, guarantees that the liquid film surface can still constantly be updated when the high viscosity, and the fuse-element is constantly deviate from to the micromolecule that polymerization produced, makes viscosity continue to rise (can reach 0.9~1.0dL/g at least).
(2) Through the optimization design of the structure and the position relation of the scraper device, the polymeric liquid film is pushed to flow towards the inner side of the annular disc by the scraper while being scraped to be thin, so that the material resistance is reduced, the material is pushed to flow towards the discharge port of the cylinder body, the retention time of the material is effectively controlled, and side reaction and counter reaction are prevented from exceeding the limit.
(3) Because the scraper is internally provided with the heat medium channel, the scraper can be externally connected with the heat medium to carry out temperature regulation, the local temperature increase can accelerate the polymerization reaction in the high-viscosity area on the one hand, and the fluidity of the high-viscosity melt can be improved on the other hand, thereby being beneficial to the production of qualified products.
Drawings
Fig. 1 is a front cross-sectional view of the present invention;
FIG. 2 is a schematic view showing a position and a structure of a doctor apparatus in embodiment 1;
fig. 3 is a schematic view of a position and a structure of the doctor apparatus in embodiment 2.
The reference signs are: the device comprises a rotating shaft 1, an annular disc 2, a feeding hole 3, a discharging hole 4, a gas phase port 5, a scraper device 6, an inner cylinder 7, a jacket cylinder 8, an end cover 9, a sealing and supporting device 10, a partition plate 11, spokes 12, a liquid level 13, a scraper 61, an upper scraper 62 and a lower scraper 63.
Detailed Description
The present invention will be further described with reference to the following examples. The devices, connections, and methods referred to in this disclosure are those known in the art, unless otherwise indicated.
General examples
As shown in fig. 1, a disc reactor with a scraper device comprises a horizontal cylindrical shell, a rotating shaft 1 and a plurality of annular discs 2. The horizontal cylindrical shell comprises an inner cylinder body 7, a jacket cylinder body 8 arranged on the outer side of the inner cylinder body, and end covers 9 sealed at two ends of the inner cylinder body and the jacket cylinder body. The rotating shaft is transversely fixed on end covers 9 at two ends in the horizontal cylindrical shell, and sealing and supporting devices 10 for sealing and supporting the rotating shaft are arranged on the end covers. Wherein the central line of the horizontal cylindrical shell is higher than the axis of the rotating shaft (namely, the horizontal cylindrical shell is in an eccentric design). Alternatively, the horizontal cylindrical shell may also be oblong (the upper and lower sides of the rectangle are respectively connected with a semicircle with the diameter of the cylinder), and the center of the rotating shaft is concentric with the center of the lower semicircle of the inner cylinder.
The plurality of annular discs are fixed in the axial direction of the rotating shaft in a serial mode through a plurality of spokes 12; a feed inlet 3 and a discharge outlet 4 are respectively arranged at two ends of the bottom of the horizontal cylindrical shell, and a gas phase port 5 is also arranged at the top (the side where the discharge outlet is arranged) of the horizontal cylindrical shell; a plurality of partition plates 11 with the height lower than that of the rotating shaft are arranged in the inner barrel body, the annular discs are axially divided into blocks with communicated tops by the partition plates along the rotating shaft, and the distance between every two adjacent annular discs is gradually increased from the feed inlet to the discharge outlet.
The bottom of the inner wall of the inner barrel body is located between a plurality of adjacent annular disks and is provided with a scraper device 6 (preferably arranged at a position close to a discharge port, and the number of the scraper devices is 1/6-1/3 of the total number of the annular disks), a gap is formed between each scraper device and the adjacent annular disks, and the top of each scraper device is higher than the liquid level 13 of materials in reaction (in reaction, the liquid level is an inclined plane due to high viscosity of the materials and rotation driving of the annular disks).
Optionally, the blade means is one blade 61 or a combined blade consisting of an upper blade 62 and a lower blade 63.
(1) A scraper is arranged between two adjacent annular disks: the root of the scraper is fixed on the inner wall of the horizontal cylindrical shell at the position where the annular disc extends out of the liquid level 13 in a rotating manner, and the included angle between the tangent line of the intersection point of the outer diameter of the annular disc and the scraper on the cross section of the annular disc and the head of the scraper is an obtuse angle (namely, the angle alpha in figure 2 is larger than 90 degrees).
(2) Be equipped with the combination scraper that constitutes by last scraper and lower scraper between two adjacent annular discs: the root of the lower scraper is fixed at the position, extending out of the liquid level 13, of the annular disc on the inner wall of the horizontal cylindrical shell in a rotating manner, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the lower scraper on the cross section of the annular disc and the head of the lower scraper is an obtuse angle (namely, the angle alpha in fig. 3 is larger than 90 degrees). The root of the upper scraper is fixed above the central line of the horizontal cylindrical shell, and the upper scraper is fixedly connected with the head of the lower scraper.
Preferably, the head of the scraper, the upper scraper or the lower scraper is close to the rotating shaft, and the downward side of the cross section of the scraper, the upper scraper or the lower scraper is of a knife edge type, and the upward side of the cross section of the scraper, the upper scraper or the lower scraper is in smooth transition. The longitudinal generatrix of the scraper, the upper scraper or the lower scraper is parallel to the cross section of the annular disc, and the included angle between the cross section of the scraper, the upper scraper or the lower scraper and the surface of the annular disc is 15-45 degrees (namely the beta angle in figures 2-3 is 15-45 degrees).
Further preferably, the inside of the blade, the upper blade or the lower blade is heated by a heat medium.
Example 1
As shown in fig. 1, a disc reactor with a scraper device comprises a horizontal cylindrical shell, a rotating shaft 1 and a plurality of annular discs 2. The horizontal cylindrical shell comprises an inner cylinder body 7, a jacket cylinder body 8 arranged on the outer side of the inner cylinder body, and end covers 9 sealed at two ends of the inner cylinder body and the jacket cylinder body. The rotating shaft is transversely fixed on end covers 9 at two ends in the horizontal cylindrical shell, and sealing and supporting devices 10 for sealing and supporting the rotating shaft are arranged on the end covers. Wherein the central line of the horizontal cylindrical shell is higher than the axis of the rotating shaft (namely, the horizontal cylindrical shell is in an eccentric design).
The annular disc is fixed in series in the axial direction of the rotating shaft by five spokes 12 (fig. 2); a feed inlet 3 and a discharge outlet 4 are respectively arranged at two ends of the bottom of the horizontal cylindrical shell, and a gas phase port 5 is also arranged at the top (the side where the discharge outlet is arranged) of the horizontal cylindrical shell; six partition plates 11 with the height lower than that of the rotating shaft are arranged in the inner barrel, and the annular disc is axially divided into seven blocks with communicated tops along the rotating shaft by the partition plates, so that the materials can be prevented from being back-mixed. The distance between adjacent annular discs is gradually increased from the feed inlet to the discharge outlet so as to adapt to the gradual increase of the viscosity of the materials.
In a block which is closest to the discharge port in the inner cylinder body, a scraper device 6 (the quantity is 1/5 of the total number of the annular disks) is arranged between every two adjacent annular disks, a gap is arranged between the scraper device and the adjacent annular disks, and the top of the scraper device is higher than the liquid level 13 of materials in reaction.
As shown in fig. 2, the scraper device is a scraper 61: a scraper is arranged between two adjacent annular disks: the root of the scraper is fixed on the inner wall of the inner cylinder body at the position where the annular disc extends out of the liquid level 13 in a rotating manner, the included angle between the tangent line of the intersection point of the outer diameter of the annular disc and the scraper on the cross section of the annular disc and the head of the scraper is 102 degrees (namely, the angle alpha in figure 2 is 102 degrees), the longitudinal generatrix of the scraper is parallel to the cross section of the annular disc, and the included angle between the cross section of the scraper and the surface of the annular disc is 30 degrees (namely, the angle beta in figure 2 is 30 degrees). The design ensures that the polymer liquid film is pushed by the scraper to flow towards the inner side of the annular plate of the annular disc while being scraped to be thin, and simultaneously, the materials flow towards the direction of the discharge hole due to the existence of the beta angle, and the reduction of the material resistance is facilitated.
The head of the scraper is close to the rotating shaft, and as can be seen from the auxiliary drawing on the right side in fig. 2, the downward side of the cross section of the scraper is in a knife edge shape, and the upward side of the cross section of the scraper is in smooth transition. In addition, can set up the passageway in the scraper inside, the scraper root extends to and presss from both sides the sleeve outside, sets up two mouths of pipe for put through the heat medium heating, can make the material temperature of scraper department improve by a small amount, increase high viscous polymer's mobility.
Example 2
As shown in fig. 1, a disc reactor with a scraper device comprises a horizontal cylindrical shell, a rotating shaft 1 and a plurality of annular discs 2. The horizontal cylindrical shell comprises an inner cylinder body 7, a jacket cylinder body 8 arranged on the outer side of the inner cylinder body, and end covers 9 sealed at two ends of the inner cylinder body and the jacket cylinder body. The rotating shaft is transversely fixed on end covers 9 at two ends in the horizontal cylindrical shell, and sealing and supporting devices 10 for sealing and supporting the rotating shaft are arranged on the end covers. Wherein the central line of the horizontal cylindrical shell is higher than the axis of the rotating shaft (namely, the horizontal cylindrical shell is in an eccentric design).
The annular disc is fixed in series in the axial direction of the rotating shaft by five spokes 12 (fig. 3); a feed inlet 3 and a discharge outlet 4 are respectively arranged at two ends of the bottom of the horizontal cylindrical shell, and a gas phase port 5 is also arranged at the top (the side where the discharge outlet is arranged) of the horizontal cylindrical shell; six partition plates 11 with the height lower than that of the rotating shaft are arranged in the inner barrel, and the annular disc is axially divided into seven blocks with communicated tops along the rotating shaft by the partition plates, so that the materials can be prevented from being back-mixed. The distance between adjacent annular discs is gradually increased from the feed inlet to the discharge outlet so as to adapt to the gradual increase of the viscosity of the materials.
In a block which is closest to the discharge port in the inner cylinder body, a scraper device 6 (the quantity is 1/5 of the total number of the annular disks) is arranged between every two adjacent annular disks, a gap is arranged between the scraper device and the adjacent annular disks, and the top of the scraper device is higher than the liquid level 13 of materials in reaction.
As shown in fig. 3, the blade assembly is a combined blade consisting of an upper blade 62 and a lower blade 63: the root of the lower scraper is fixed at the position, on the inner wall of the horizontal cylindrical shell, of the annular disc, which extends out of the liquid level 13 in a rotating manner, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the lower scraper on the cross section of the annular disc and the head of the lower scraper is 102 degrees (namely, the angle alpha in fig. 3 is 102 degrees). The root of the upper scraper is fixed above the central line of the horizontal cylindrical shell, and the upper scraper is fixedly connected with the head of the lower scraper. The longitudinal generatrix of the upper and lower scrapers is parallel to the cross section of the annular disc, and the angle between the cross section of the scrapers and the surface of the annular disc is 30 degrees (i.e. the angle beta in fig. 3 is 30 degrees). The design ensures that the polymer liquid film is pushed by the scraper to flow towards the inner side of the annular plate of the annular disc while being scraped to be thin, and simultaneously, the materials flow towards the direction of the discharge hole due to the existence of the beta angle, and the reduction of the material resistance is facilitated.
The heads of the upper and lower scrapers are close to the rotating shaft, as can be seen from the auxiliary drawing on the right side in fig. 3, the downward side of the cross section of the scraper is in a knife edge shape, and the upward side of the cross section of the scraper is in smooth transition. In addition, can set up the passageway in upper and lower scraper, upper and lower scraper root extends to and presss from both sides the sleeve outside, sets up two mouths of pipe for putting through the heating medium heating, can make the material temperature of scraper department improve by a small amount, increases high viscous polymer's mobility.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and equivalent structure transform of doing to above embodiment the utility model discloses technical scheme's protection scope.
Claims (11)
1. A disc reactor with a scraper device comprises a horizontal cylindrical shell, a rotating shaft (1) and a plurality of annular discs (2); the rotating shaft is transversely fixed at two ends in the horizontal cylindrical shell, and the plurality of annular discs are axially fixed on the rotating shaft in a serial form; a feed inlet (3) and a discharge outlet (4) are respectively arranged at two ends of the bottom of the horizontal cylindrical shell, and a gas phase port (5) is arranged at the side of the discharge outlet of the horizontal cylindrical shell; the method is characterized in that: and a scraper device (6) is arranged between a plurality of adjacent annular disks in the horizontal cylindrical shell, and the top of the scraper device is higher than the material liquid level during reaction.
2. The disc reactor of claim 1, wherein: the scraper device is arranged between the adjacent annular disks close to the discharge port.
3. The disc reactor of claim 2, wherein: the number of the scraper devices is 1/6-1/3 of the total number of the annular discs.
4. A disc reactor according to any one of claims 1 to 3, wherein: the scraper device is a scraper (61) or a combined scraper consisting of an upper scraper (62) and a lower scraper (63).
5. The disc reactor of claim 4, wherein:
a scraper is arranged between two adjacent annular disks: the root of the scraper is fixed at the position, extending out of the liquid level, of the annular disc on the inner wall of the horizontal cylindrical shell in a rotating manner, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the scraper on the cross section of the annular disc and the head of the scraper is an obtuse angle;
be equipped with the combination scraper that constitutes by last scraper and lower scraper between two adjacent annular discs: the root of the lower scraper is fixed at the position, extending out of the liquid level, of the annular disc on the inner wall of the horizontal cylindrical shell in a rotating manner, and the included angle between the tangent line of the outer diameter of the annular disc and the intersection point of the lower scraper on the cross section of the annular disc and the head of the lower scraper is an obtuse angle; the root of the upper scraper is fixed above the central line of the horizontal cylindrical shell, and the upper scraper is fixedly connected with the head of the lower scraper.
6. The disc reactor of claim 4, wherein: the longitudinal generatrix of the scraper, the upper scraper or the lower scraper is parallel to the cross section of the annular disc, and the included angle between the cross section of the scraper, the upper scraper or the lower scraper and the surface of the annular disc is 15-45 degrees.
7. The disc reactor of claim 6, wherein: the downward side of the cross section of the scraper, the upper scraper or the lower scraper is in a knife edge shape, and the upward side of the cross section of the scraper, the upper scraper or the lower scraper is in smooth transition.
8. The disc reactor of claim 4, wherein: the head of the scraper, the upper scraper or the lower scraper is close to the rotating shaft.
9. A disc reactor according to any one of claims 1 to 3, wherein: the horizontal cylindrical shell comprises an inner cylinder body (7), a jacket cylinder body (8) arranged on the outer side of the inner cylinder body and end covers (9) sealed at two ends of the inner cylinder body and the jacket cylinder body; and the end cover is provided with a sealing and supporting device (10) for sealing and supporting the rotating shaft.
10. The disc reactor of claim 9, wherein: a plurality of partition plates (11) are arranged in the inner barrel body, and the annular disc is axially divided into a plurality of blocks with communicated tops by the partition plates along the rotating shaft.
11. A disc reactor according to any one of claims 1 to 3, wherein: the distance between adjacent annular discs is gradually increased from the feed inlet to the discharge outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020647394.0U CN212819825U (en) | 2020-04-24 | 2020-04-24 | Disc reactor with scraper device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020647394.0U CN212819825U (en) | 2020-04-24 | 2020-04-24 | Disc reactor with scraper device |
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| CN212819825U true CN212819825U (en) | 2021-03-30 |
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