CN115228404A - Indirect uniform heating structure of jacket type reaction kettle and manufacturing method - Google Patents
Indirect uniform heating structure of jacket type reaction kettle and manufacturing method Download PDFInfo
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- CN115228404A CN115228404A CN202210838924.3A CN202210838924A CN115228404A CN 115228404 A CN115228404 A CN 115228404A CN 202210838924 A CN202210838924 A CN 202210838924A CN 115228404 A CN115228404 A CN 115228404A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 77
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 61
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005192 partition Methods 0.000 claims abstract description 35
- 238000003466 welding Methods 0.000 claims description 124
- 230000003014 reinforcing effect Effects 0.000 claims description 32
- 238000009434 installation Methods 0.000 claims description 15
- 230000008719 thickening Effects 0.000 claims description 14
- 238000003754 machining Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
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- 230000000694 effects Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 11
- 238000004140 cleaning Methods 0.000 description 3
- 239000012774 insulation material Substances 0.000 description 3
- 238000010411 cooking Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
- B01J2219/00051—Controlling the temperature
- B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
- B01J2219/00076—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements inside the reactor
- B01J2219/00085—Plates; Jackets; Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0022—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for chemical reactors
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Abstract
The invention discloses a jacket type reaction kettle indirect uniform heating structure and a manufacturing method thereof, wherein a longitudinal guide plate, an axial main channel partition plate and a circumferential baffle plate are welded between an inner cylinder and an outer cylinder, the longitudinal guide plate is staggered along the axial direction and is provided with a certain interval along the circumference, then a local S-shaped heat medium channel area which is eight sections along the axial direction of the whole kettle body and is uniformly distributed along the circumference is formed together with the axial main channel partition plate and the circumferential baffle plate, namely, 8 x 4=32 areas are divided on the outer circumferential surface of the whole inner cylinder, each area forms a local S-shaped heat medium channel 23 area, each area is arranged in parallel in a formed axial heat medium inflow channel and a formed axial heat medium outflow channel, the inlet temperature and the outlet temperature of each area are basically the same, the outer surface of the whole inner cylinder is uniformly heated by the mode, the temperature in the kettle is ensured to be uniform, the heat transfer area is large, the heating effect is good, and the heat energy is fully utilized.
Description
The technical field is as follows:
the invention relates to a heating technology of a reaction kettle, in particular to a jacket type reaction kettle indirect uniform heating structure and a manufacturing method thereof.
Background art:
in the existing reaction kettles which are commonly used, a plurality of reaction kettles are vertically arranged, and in the structural form of indirect heating, two main types are provided, one type is a mode that a spiral semicircular pipe is welded outside a pressure-resistant inner layer reaction kettle and a heating medium is introduced, so that the heating medium in the semicircular pipe flows along the spiral pipeline, a heat transfer channel and time are increased, and the sufficient heat transfer of the heating medium is ensured; the other type is a honeycomb structure, circular supporting pieces are arranged on the inner layer and the outer layer of the reaction kettle in an array mode, the inner layer and the outer layer of the reaction kettle are connected, the purpose of improving the rigidity of the whole reaction kettle is achieved, and meanwhile, a heating medium flows in a curve mode between the inner layer and the outer layer, so that the purpose of fully utilizing a heat source to improve the heat transfer efficiency is achieved. The two structures have the defects that the kettle body can not be completely contacted with a heating medium, the heat transfer efficiency is influenced, the integral rigidity of the kettle body still takes the inner layer as the main part, and the outer layer basically has no effect.
In the current common rotary dryer or rotary kiln, continuous feeding and discharging can be realized through the rotary type, but the direct heating mode is different from the indirect heating structural form of the invention, especially for powder, the heating airflow is easy to bring out the material, and the dust removal load of the exhaust gas and the raw material recovery cost are increased.
In addition, the steam-curing kettle, the cooking kettle or the still kettle which is common in the market mainly works in a static mode, namely, in the working process, the whole reaction kettle is static, only the end face is provided with the openable cover, materials enter the reaction kettle through the rail trolley, and the temperature and the pressure are increased to carry out the cooking reaction after the cover is closed. The reaction kettle of the type has direct heating and indirect heating, the jacket of the indirect heating has a relatively simple structure, one side is ventilated, the other side is exhausted, the heat transfer efficiency is low by directly passing through the jacket, and the cost is low.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: overcomes the defects of the prior art, and provides a jacket type reaction kettle indirect uniform heating structure with reasonable design, multi-zone heating and good heating uniformity and a manufacturing method thereof.
The technical scheme of the invention is as follows:
the utility model provides a press from both sides indirect even heating structure of cover type reation kettle, contains the cauldron body, the cauldron body includes interior barrel and outer barrel, and cavity between the two is for heating jacket, evenly be provided with two at least axial main entrance baffles along the circumferencial direction interval in the heating jacket, every two are adjacent constitute an independent heating region between the axial main entrance baffle, each evenly be provided with two at least circumference fender stream boards along the axial interval in the heating region, every two are adjacent constitute a sub-heating region, each between the circumference fender stream board along the circumferencial direction interval in the sub-heating region evenly be provided with two at least vertical guide plates, each the one end and one of vertical guide plate circumference fender stream board is connected, and its other end and another leave the clearance between the circumference fender stream board, all vertical guide plate and same end adopt to be connected and leave the crisscross setting of gapped mode between the circumference fender stream board, form the continuous formula of turning back's the flow channel, each the both sides of heating region are provided with flow in channel and heat medium outflow channel respectively, each all in the heating region import and export of sub-heating medium flow channel equally divide equally and flow channel with heat medium outflow channel intercommunication.
Preferably, the both ends of interior barrel and outer barrel are interior head and outer head respectively, with one end the centre bore department of interior head and outer head is provided with the flange subassembly respectively, two the flange subassembly is connected with import rotary joint and export rotary joint respectively, each open the air vent that has the equipartition on the pipe that the flange subassembly belongs for introduce or discharge heat medium from rotary joint, the terminal surface department of interior head and outer head evenly is provided with the terminal surface baffling board along the circumferencial direction interval, adjacent two the clearance of terminal surface baffling board is heat medium import or heat medium export, each heat medium import and one the heat medium inflow channel intercommunication of heating region, each the heat medium export with one the heat medium outflow channel intercommunication of heating region.
Preferably, at least two inner and outer seal head supporting ribs which are uniformly distributed along the circumference are welded and fixed in gaps at the center and the large end face between the inner seal head and the outer seal head, so that a gap is formed between the inner seal head and the outer seal head, and the rigidity of the gap is enhanced; the inner end socket and the outer end socket at two ends of the kettle body are provided with maintenance manholes for maintaining the inside of the reaction kettle, and meanwhile, an endoscope capable of being cleaned can be installed on the manholes for observing the material movement and the reaction condition in the reaction kettle.
Preferably, a large gear ring is arranged on the kettle body, the large gear ring is installed with a pin hole on the large gear ring through a pin hole on a large gear ring installation spring plate, the other end of the large gear ring installation spring plate is welded to a large gear ring welding cylinder in a tangent mode, the large gear ring welding cylinder is a thickened outer cylinder body, the large gear ring welding cylinder is welded with a thickened inner cylinder body at the large gear ring through a large gear ring radial support plate inside the large gear ring welding cylinder, and the thickened inner cylinder body at the large gear ring is welded with inner cylinder bodies at two sides in the longitudinal direction to form a whole; circumferential reinforcing plates are arranged at the two axial ends of the large gear ring welding cylinder and the large gear ring radial supporting plate, so that the large gear ring is strongly connected with the kettle body; the radial bearing plate of the large gear ring is uniformly distributed along the circumference, the distribution quantity of the radial bearing plate of the large gear ring is the same as that of the longitudinal guide plates, the radial bearing plate of the large gear ring is axially on the same line with the longitudinal guide plates when being welded, and arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate along the circumference to form the heat medium channel together with the longitudinal guide plates.
Preferably, a wheel belt is arranged on the kettle body and welded on the thickening inner cylinder at the wheel belt through a wheel belt radial supporting plate, circumferential reinforcing plates are welded at two ends of the wheel belt radial supporting plate along the axial direction, the inner cylinder is welded at two ends of the thickening inner cylinder at the wheel belt along the axial direction, the wheel belt is connected with the inner cylinder 11, and strong supporting rigidity is realized; the wheel belt radial supporting plates are uniformly distributed along the circumference, the number of the wheel belt radial supporting plates distributed on the circumference is the same as that of the longitudinal guide plates, the wheel belt radial supporting plates and the longitudinal guide plates are axially on the same line during welding, arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate along the circumference, and the circumferential reinforcing plate and the longitudinal guide plates form a heat medium channel.
Preferably, the wheel belt radial supporting plates are welded with wheel belt position partition plates at the positions where the wheel belt radial supporting plates are spaced pairwise, the wheel belt position partition plates are identical to the outer cylinder body in the radial welding position, and the wheel belt position partition plates and the wheel belt position thickening inner cylinder between every two wheel belt radial supporting plates form a plurality of circumferential heat medium channels.
Preferably, a space for installing heat insulation materials is formed between the outside of the clapboard at the belt and the inner hole of the belt, so that heat loss is prevented; and the right end face of the belt pulley is welded with a belt pulley axial positioning plate to realize the axial positioning of the belt pulley.
A manufacturing method of the indirect uniform heating structure of the jacket type reaction kettle comprises the following steps:
(1) Welding end socket assemblies at two ends of the reaction kettle:
both ends head subassembly includes: the flange assembly, the inner and outer seal head supporting ribs, the inner seal head and the outer seal head; welding the inner end enclosure and the outer end enclosure at two ends of the reaction kettle together through the inner end enclosure supporting rib and the outer end enclosure supporting rib which are connected in the middle, cutting out a central large hole of a welding flange assembly at the centers of the inner end enclosure and the outer end enclosure, and reserving machining allowance; then, an inner end socket and an outer end socket large end face welding groove and a central large hole are machined to reach the size by a large vertical lathe; welding the welded flange assembly with the machining allowance with the large holes in the centers of the inner seal head and the outer seal head; removing welding residual stress after welding, and then processing a connecting flange surface of the flange assembly;
(2) And (3) welding a wheel belt part assembly:
the belt station assembly includes: the wheel belt, the wheel belt thickening inner cylinder, the wheel belt radial support plate, the circumferential reinforcing plate, the wheel belt axial positioning plate and the wheel belt partition plate are uniformly welded outside the wheel belt thickening inner cylinder; then welding circumferential reinforcing plates on two end faces of the radial bearing plate of the wheel belt; welding a belt partition plate and a belt axial positioning plate between the radial belt supporting plates; removing residual stress after welding, performing finish machining on the surface matched with the belt on a vertical lathe, and machining a welding groove at the two ends of the thickened inner cylinder at the belt;
(3) Welding the large gear ring component assembly:
the large ring gear component assembly comprises: the large gear ring mounting cylinder, the large gear ring mounting spring plate, the thickened inner cylinder at the large gear ring, the large gear ring radial bearing plate and the circumferential reinforcing plate are arranged on the large gear ring mounting cylinder; the large gear ring and the large gear ring are provided with the spring plate, and construction is carried out on the installation site; then a large gear ring radial bearing plate is uniformly welded outside the thickened inner cylinder at the large gear ring; then welding a large gear ring mounting cylinder outside to ensure that the concentricity is 2mm; then welding circumferential reinforcing plates on two end surfaces of the radial bearing plate of the large gear ring; removing residual stress after welding, and processing a welding groove of the outer circular surface of the large gear ring installation cylinder and the thickened inner cylinder at the large gear ring on the vertical lathe;
(4) Welding the middle inner cylinder 11:
the middle inner cylinder body comprises a plurality of sections, and is subjected to rounding, welding and circle correction according to design sections, the roundness is controlled within 2mm, a 'Mi' -shaped support is welded inside to ensure the roundness, and a certain distance is staggered according to a standard longitudinal welding line during butt joint;
(5) The inner cylinder body is in butt welding with the belt wheel part assembly, the large gear ring component assembly and the two end sealing head assemblies, so that the coaxiality is ensured;
(6) According to the arrangement on the design drawing, the end surface flow baffle, the longitudinal flow guide plate, the axial main channel partition plate and the circumferential flow baffle are respectively welded on the inner cylinder body, the thickened inner cylinder at the large gear ring and the thickened inner cylinder at the wheel belt in a cross section mode, and the welding process is carried out by paying attention to the equal intervals along the circumferential direction, so that a foundation is laid for the outer cylinder body to be welded below;
(7) Welding an outer cylinder body:
the outer cylinder body is respectively rounded according to the axial size of the reaction kettle and according to the end surface baffle plate, the circumferential reinforcing plate at the large gear ring and the circumferential reinforcing plate at the wheel band, long-hole-shaped outer cylinder welding spots are cut on the surface of the outer cylinder body at intervals, the circumferential distance is the same as the external distance of the longitudinal guide plate and the axial main channel partition plate, the outer cylinder body is welded outside the end surface baffle plate, the longitudinal guide plate, the axial main channel partition plate and the circumferential baffle plate in a circumferential fragmentation mode, the axial end surface is aligned with the circumferential baffle plate during butt joint, a welding seam space is reserved, the circumferential cut outer cylinder welding spots are aligned with the longitudinal guide plate and the axial main channel partition plate and then welded after alignment and positioning, and the outer cylinder welding spots and the end surface circumferential welding seams of the end surface baffle plate and the circumferential baffle plate are completely repaired during welding;
(8) Welding auxiliary components:
cutting a manhole, stopping the machine, emptying a discharge hole for the reaction kettle, and welding a manhole assembly and a discharge hole assembly; and welding the internal lifting plate and the discharging guide plate.
Preferably, the following components: in the step (1), the large end face circle concentricity of the inner seal head and the outer seal head is controlled within 2mm during welding; the concentricity between the outer circle of the large end faces of the inner end socket and the outer end socket is ensured to be within 1 mm;
in the step (2), the wheel belt is thickened, the inner cylinder is rounded, welded and corrected, the roundness is controlled within 2mm, and a bearing shaped like a Chinese character 'mi' is welded inside to ensure the roundness;
in the step (3), the large gear ring is thickened, the inner cylinder is subjected to rounding, welding and rounding, the roundness is controlled within 2mm, and a 'Mi' -shaped support is welded inside to ensure the roundness.
Preferably, the following components: in the step (7), the size of the welding point of the long-hole-shaped outer cylinder is as follows: long holes with the length of 60mm multiplied by the width of 10mm and the distance of 400-500 mm.
The invention has the beneficial effects that:
1. the invention adopts an indirect jacket type heating mode and the structure of the S-shaped heating medium channel connected in parallel in the inner area of the jacket, ensures that the whole reaction kettle body is uniformly heated, ensures that the temperature in the kettle is uniform, has large heat transfer area and fully utilizes heat energy.
2. The invention adopts the structure of S-shaped heat medium channels which are connected in parallel in the inner partition of the jacket, and the structure comprises the guide plate along the axial direction and the baffle plate along the circumferential direction, thereby well enhancing the rigidity of the whole reaction kettle body, and the structure of the jacket is provided with the heat medium channels, and simultaneously can increase the whole rigidity and stability.
3. The supporting positions of the belt wheel and the large gear ring are designed with special supporting structures, the large gear ring is arranged outside the rotary outer-layer jacket and used for driving the reaction kettle to rotate, and the belt wheel for supporting the rotary reaction kettle is arranged at certain intervals along the axial direction of the reaction kettle; and meanwhile, the coating of the heat-insulating material is not influenced.
4. The invention adopts a special manufacturing process, effectively ensures the engineering realization of the reaction kettle, mainly adopts a welding structure and a welding process of the middle inner and outer cylinders of the reaction kettle, the middle longitudinal guide plate and the circumferential guide plate, and better solves the problem of welding connection between the outer cylinder and the guide plate.
5. The invention can be applied to chemical reaction occasions requiring high temperature and high pressure, and can realize continuous material treatment; because the horizontal installation is adopted, the device has larger effective volume, high capacity and good economic benefit after popularization.
Description of the drawings:
FIG. 1 is an assembled perspective view of an indirect uniform heating reactor of the present invention;
FIG. 2 is a side view of the indirect uniform heating reactor shown in FIG. 1;
FIG. 3 is a sectional view of the indirect uniform heating reactor shown in FIG. 2;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 2;
FIG. 6 is a view showing a heating structure and a heat medium passage of the indirect uniform heating reactor shown in FIG. 1;
fig. 7 is a partially enlarged view of fig. 6.
The specific implementation mode is as follows:
the first embodiment is as follows: referring to fig. 1-7, in the drawings, 1-kettle body, 2-bull gear, 3-supporting wheel belt, 4-inlet rotary joint, 5-outlet rotary joint, 6-inlet rotary joint connecting flange component, 7-inner and outer head supporting rib, 8-inner head, 9-manhole, 10-end baffle plate, 11-inner cylinder, 12-longitudinal guide plate, 13-axial main channel baffle plate, 14-circumferential baffle plate, 15-wheel belt thickening inner cylinder, 16-wheel belt radial supporting plate, 17-circumferential reinforcing plate, 18-outer cylinder, 19-bull gear installation cylinder, 20-heat medium inlet, 21-discharge port, 22-outer head, 23-heat medium channel, 24-outer cylinder welding point, 25-bull gear installation spring plate, 26-bull gear thickening inner cylinder, 27-bull gear radial supporting plate, 28-material raising plate, 29-pin shaft, 30-wheel belt axial positioning plate, 31-wheel belt partition plate, 32-discharge guide plate, 33-heat medium inflow channel, 34-heat medium outflow channel.
The device of the invention consists of five parts: the device comprises a kettle body 1, a large gear ring 2, a supporting wheel belt 3, an inlet rotary joint 4 and an outlet rotary joint 5. The whole reaction kettle is supported on a carrier roller (not shown in the figure) through a supporting wheel belt and is meshed with a bull gear for driving to rotate through a pinion (not shown in the figure) on a driving device. The axial direction of the whole reaction kettle is arranged according to the inclination of 0.02-0.05, so that the internal materials flow from the inlet to the outlet. As the materials are required to be heated in the reaction kettle, the reaction kettle adopts a jacket indirect heating mode, so that the whole outer surface of the reaction kettle body is required to be coated with a heat insulation material (not shown in the figure).
As shown in figures 3 and 4, the large gear ring 2 is installed with the pin hole on the large gear ring through the pin hole on the large gear ring installation spring plate 25 through the pin shaft 29, the other end of the large gear ring installation spring plate 25 is welded on the large gear ring welding cylinder 19 in a tangent mode, the large gear ring welding cylinder 19 is welded with the thickened inner cylinder 26 at the large gear ring through the large gear ring radial supporting plate 27 inside the large gear ring welding cylinder 19, and the thickened inner cylinder 26 at the large gear ring is welded with the inner cylinders 11 at two sides in the longitudinal direction to form a whole. Circumferential reinforcing plates 17 are arranged at two axial ends of the large gear ring welding cylinder 19 and the large gear ring radial bearing plate 27, so that the large gear ring 2 is strongly connected with the rotary kettle body 1, the rigidity of the joint is enhanced, and the driving of the large gear ring on the whole kettle body 1 is ensured. The radial bearing plates 27 of the large gear ring are uniformly distributed along the circumference, the distribution quantity of the radial bearing plates 27 of the large gear ring on the circumference is the same as that of the longitudinal guide plates 12, the radial bearing plates 27 of the large gear ring are axially on the same line with the longitudinal guide plates 12 when being welded, and arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate 17 along the circumference to form a heat medium channel together with the longitudinal guide plates 12.
As shown in fig. 3 and 5, the belt 3 is welded to the thickened inner cylinder 15 at the belt position through the radial belt supporting plate 16, the circumferential reinforcing plates 17 are welded to the two axial ends of the radial belt supporting plate 16, and the inner cylinder 11 is welded to the two axial ends of the thickened inner cylinder 15 at the belt position, so that the belt 3 is connected with the inner cylinder 11, and strong supporting rigidity can be realized. Similarly, the radial wheel belt bearing plates 16 are uniformly distributed along the circumference, the number of the radial wheel belt bearing plates 16 distributed on the circumference is the same as that of the longitudinal guide plates 12, the radial wheel belt bearing plates 16 are axially on the same line with the longitudinal guide plates 12 when being welded, and arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate 17 along the circumference to form a heat medium channel together with the longitudinal guide plates 12. Moreover, the wheel belt position partition plates 31 are welded at the positions of the wheel belt radial support plates 16 at intervals, the wheel belt position partition plates 31 are the same as the outer cylinder 18 in the radial welding positions, so that a plurality of heat medium channels along the circumference are formed among every two wheel belt radial support plates 16, the wheel belt position partition plates 31 and the wheel belt position thickening inner cylinder 15, and a space capable of installing heat insulation materials is formed between the outer part of the wheel belt position partition plates 31 and the inner hole of the wheel belt 3, so that heat loss is prevented. In addition, a belt axial positioning plate 30 is welded at the right end face of the belt 3 to realize the axial positioning of the belt 3.
As shown in fig. 6, the reactor jacket structure and the heating medium channel are cut open after the outer parts of the reactor body are hidden, and the inlet rotary joint 4 is connected with the inlet rotary joint connecting flange assembly 6 through a flange, and the sealing of the flange connecting surface is ensured. The inlet rotary joint connecting flange assembly 6 is integrally welded in central inner holes of the inner end enclosure 8 and the outer end enclosure 22, 6 vent holes are uniformly distributed on a circular tube to which the inlet rotary joint connecting flange assembly 6 belongs, the circular tube is used for introducing a heating medium from the inlet rotary joint 4, the heating medium is diffused from the center to the periphery, the heating medium enters a plurality of heating medium inlets between the inner barrel body 11 and the outer barrel body 18 through a gap between the inner end enclosure 8 and the outer end enclosure 22 respectively, and the heating medium inlets are formed by a plurality of end face flow blocking plates 10 welded in gaps between the end faces of the inner end enclosure 8 and the outer end enclosure 22. A plurality of inner and outer seal head supporting ribs 7 which are uniformly distributed along the circumference are welded and fixed in gaps at the center and the large end face between the inner seal head 8 and the outer seal head 22, so that a gap is formed between the inner seal head 8 and the outer seal head 22 and the rigidity of the gap is enhanced. The inner sealing head 8 and the outer sealing head 22 at the two ends of the kettle body 1 are both provided with maintenance manholes 9 for maintaining the inside of the reaction kettle, and the manholes 9 are arranged at the two ends for ventilation. Meanwhile, a cleanable endoscope (not shown in the figure) can be arranged on the manhole 9 to observe the material movement and the reaction condition in the reaction kettle.
Because the large gear ring 2 and the belt 3 are welded or installed on the kettle body 1, in order to prevent the spring plate 25 from being installed on the belt 3 and the large gear ring from being welded and fixed, the large gear ring radial bearing plate 27 is arranged at the position of the large gear ring 2, the belt radial bearing plate 16 is arranged at the position of the belt, and the large gear ring radial bearing plate 27 and the belt radial bearing plate 16 are collinear along the axial direction when being welded with the axial main channel partition plate 13 and the longitudinal guide plate 12, so that the heat medium channel 23 is formed together.
The discharge hole 21 is arranged on the reaction kettle body and is close to the outlet end, the position is just in the middle of the two heat medium channels, the two heat medium channels beside the reaction kettle still have through-flow sections capable of normally circulating, after the reaction kettle is stopped, corrosion caused by long-term storage of residual materials is prevented, and the emptying discharge hole 21 is arranged for cleaning the reaction kettle. When cleaning, the opening is turned to the lowest part, and the opening is opened for emptying and cleaning.
The key manufacturing process of the reaction kettle body comprises the following steps:
due to the common arrangement structure form of the jacketed S-shaped heating medium, the manufacturing process is different from the traditional form. The key manufacturing process method is realized by the following steps:
(1) Welding end enclosure assemblies at two ends of the reaction kettle:
both ends head subassembly includes: the inlet rotary joint is connected with the flange assembly 6, the inner and outer seal head supporting ribs 7, the inner seal head 8 and the outer seal head 22; welding inner sealing heads 8 and outer sealing heads 22 at two ends of the reaction kettle together through inner and outer sealing head supporting ribs 7 connected in the middle, and ensuring that the concentricity of large end faces of the inner sealing heads 8 and the outer sealing heads 22 is controlled within 2mm during welding; cutting a central large hole of the inlet rotary joint connecting flange assembly 6 at the centers of the inner seal head 8 and the outer seal head 22, and reserving machining allowance; then, an inner seal head 8 and an outer seal head 22 are machined to be large end face welding grooves and large center holes to reach the size by a large vertical lathe; welding the inlet rotary joint connecting flange assembly 6 which is welded and provided with machining allowance with the inner sealing head 8 and the large hole in the center of the outer sealing head 22; removing the residual welding stress after welding, and then processing the connecting flange surface of the inlet rotary joint connecting flange assembly 6 to ensure that the concentricity with the outer circles of the large end surfaces of the inner seal head 8 and the outer seal head 22 is within 1 mm;
(2) And (3) welding a wheel belt part assembly:
the belt station assembly includes: the wheel belt 3, the wheel belt position thickening inner cylinder 15, the wheel belt radial support plate 16, the circumferential reinforcing plate 17, the wheel belt axial positioning plate 30 and the wheel belt position partition plate 31 are welded on the wheel belt position, and the wheel belt 3 is generally welded on the installation site; the inner cylinder 15 is thickened at the wheel belt for rounding, welding and circle correction, the roundness is controlled within 2mm, and a 'meter' -shaped support is welded inside to ensure the roundness; then a radial bearing plate 16 of the belt is uniformly welded outside the thickening inner cylinder 15 at the belt; then welding circumferential reinforcing plates 17 on two end surfaces of the radial bearing plate 16 of the wheel belt; then welding a belt partition plate 31 and a belt axial positioning plate 30 between the belt radial supporting plates 16; removing residual stress after welding, performing finish machining on the surface matched with the belt on a vertical lathe, and machining a welding groove at the two ends of the thickened inner cylinder 15 at the belt;
(3) Welding the large gear ring component assembly:
the large ring gear component assembly comprises: a large gear ring mounting cylinder 19, a large gear ring mounting spring plate 25, a large gear ring thickening inner cylinder 26, a large gear ring radial bearing plate 27 and a circumferential reinforcing plate 17; the large gear ring 2 and the large gear ring installation spring plate 25 are constructed on the installation site; the inner cylinder 26 is thickened at the large gear ring for rounding, welding and roundness correction, the roundness is controlled within 2mm, and a 'Mi' -shaped support is welded inside to ensure the roundness; then a large gear ring radial bearing plate 27 is uniformly distributed and welded outside the thickened inner cylinder 26 at the large gear ring; then welding a large gear ring mounting cylinder 19 outside to ensure that the concentricity is 2mm; then welding the circumferential reinforcing plates 17 on the two end surfaces of the large gear ring radial supporting plate 27; and (4) removing residual stress after welding, and processing a welding groove of the outer circular surface of the large gear ring installation cylinder 19 and the thickened inner cylinder 26 at the large gear ring on the vertical lathe.
(4) Welding the middle inner cylinder body 11:
the middle inner cylinder body 11 comprises a plurality of sections, and is subjected to rounding, welding and circle correction according to design sections, the roundness is controlled within 2mm, and a 'Mi' -shaped support is welded inside to ensure the roundness. During butt joint, certain intervals need to be staggered according to standard longitudinal welding lines.
(5) The inner cylinder body 11 is in butt welding with the belt wheel part assembly, the large gear ring component assembly and the end enclosure assemblies at two ends, and coaxiality is guaranteed.
(6) According to the arrangement on the design drawing, the end surface flow baffle 10, the longitudinal flow guide plate 12, the axial main channel partition plate 13 and the circumferential flow baffle 14 are respectively welded on the inner cylinder body 11, the thickened inner cylinder 26 at the large gear ring and the thickened inner cylinder 15 at the wheel belt in a cross section, and the welding process is carried out by paying attention to the equal intervals along the circumferential direction, so that a foundation is laid for the outer cylinder body 18 to be welded below.
(7) Welding the outer cylinder 18:
the outer cylinder 18 is respectively rolled along the axial dimension of the reaction kettle according to the section of the end surface baffle plate 10, the circumferential baffle plate 14, the circumferential reinforcing plate 17 at the large gear ring 2 and the circumferential reinforcing plate 17 at the wheel band 3, long-hole-shaped outer cylinder welding spots 24 (such as long holes 60mm long multiplied by 10mm wide, the distance is 400 to 500mm) are cut at intervals on the outer cylinder surface, the distance along the circumferential direction is the same as the external distance of the longitudinal guide plate 12 and the axial main channel partition plate 13, the outer cylinder 18 is welded on the end surface baffle plate 10, the longitudinal guide plate 12, the axial main channel partition plate 13 and the outer surface of the circumferential baffle plate 14 along the circumferential direction, the axial end surface is aligned with the circumferential baffle plate 14 and a welding space is reserved during butt joint, the circumferentially cut outer cylinder welding spots 24 are in a line with the longitudinal guide plate 12 and the axial main channel partition plate 13, welding is performed after alignment positioning, and the end surface circumferential welding spots 24 of the outer cylinder baffle plate 10 and the circumferential baffle plate 14 are replenished during welding.
(8) Welding the auxiliary assembly:
cutting a manhole and a discharge hole, and welding a manhole assembly 9 and a discharge hole assembly 21; the internal lifter plate 28 and the discharge deflector plate 32 are welded.
Example two: the present embodiment is basically the same as the first embodiment, and the differences are that: the length and diameter of the kettle body 1 can be divided into more or less heating zones, such as 1: when 6 portions are uniformly distributed along the circumference and 10 portions are divided along the length, 10 × 6=60 regions are formed. For example, the ratio of 2: when 3 parts are circumferentially distributed and 6 parts are longitudinally divided, 6 × 3=18 regions are formed. According to the needs, it is not described in detail.
Of course, the width and height of the heat medium flow channel in each heating area are also changed according to the size of the kettle body, which can constitute more embodiments and are not described in detail.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modifications made according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a press from both sides indirect even heating structure of cover type reation kettle, contains the cauldron body, the cauldron body is including interior barrel and outer barrel, and cavity between the two presss from both sides cover, characterized by for heating: at least two axial main channel clapboards are evenly arranged in the heating jacket at intervals along the circumferential direction, every two adjacent axial main channel clapboards form an independent heating area, each heating area is internally evenly provided with at least two circumferential flow baffle plates at intervals along the axial direction, every two adjacent circumferential flow baffle plates form a sub-heating area, each sub-heating area is internally evenly provided with at least two longitudinal flow deflectors at intervals along the circumferential direction, each longitudinal flow deflector is connected with one circumferential flow baffle plate, the other end of the longitudinal flow deflector is connected with the other circumferential flow baffle plate, a gap is reserved between the circumferential flow baffle plates, all the longitudinal flow deflectors and the circumferential flow baffle plates at the same end are connected and arranged in a staggered mode with the gap, a continuous turn-back type heating medium flow channel is formed, each heating area is respectively provided with a heating medium inflow channel and a heating medium outflow channel at two sides, and each heating medium area is internally provided with all inlets and outlets of the sub-heating area flow channels are evenly communicated with the heating medium inflow channel and the heating medium outflow channel.
2. The indirect uniform heating structure of the jacketed reaction kettle according to claim 1, which is characterized in that: interior barrel and outer barrel's both ends are interior head and outer head respectively, with one end the centre bore department of interior head and outer head is provided with flange subassembly respectively, two flange subassembly is connected with import rotary joint and export rotary joint respectively, each open the air vent that has the equipartition on the pipe that the flange subassembly belongs for introduce or discharge the heat medium from rotary joint, the terminal surface department of interior head and outer head evenly is provided with the terminal surface along the circumferencial direction interval and keeps off and flows the board, adjacent two the terminal surface keeps off the clearance that flows the board and is heat medium import or heat medium export, each heat medium import and one the heat medium inflow channel intercommunication of heating region, each the heat medium export with one the heat medium outflow channel intercommunication of heating region.
3. The indirect uniform heating structure of the jacket type reaction kettle according to claim 2, characterized in that: at least two inner and outer seal head supporting ribs which are uniformly distributed along the circumference are welded and fixed in gaps at the center and the large end face between the inner seal head and the outer seal head, so that a gap is formed between the inner seal head and the outer seal head, and the rigidity of the gap is enhanced; the reactor is characterized in that maintenance manholes are formed in the inner end enclosure and the outer end enclosure at two ends of the reactor body and used for maintaining the inside of the reactor, and meanwhile, a cleanable endoscope can be installed on the manholes and used for observing material movement and reaction conditions in the reactor.
4. The indirect uniform heating structure of the jacketed reaction kettle according to claim 1, which is characterized in that: the large gear ring welding cylinder is a thickened outer cylinder body, the large gear ring welding cylinder is welded with the thickened inner cylinder at the large gear ring through a large gear ring radial bearing plate inside the large gear ring welding cylinder, and the thickened inner cylinder at the large gear ring is welded with the inner cylinder at two sides in the longitudinal direction to form a whole; circumferential reinforcing plates are arranged at the two axial ends of the large gear ring welding cylinder and the radial supporting plate of the large gear ring, so that the large gear ring is strongly connected with the kettle body; the radial bearing plate of the large gear ring is uniformly distributed along the circumference, the distribution quantity of the radial bearing plate of the large gear ring is the same as that of the longitudinal guide plates, the radial bearing plate of the large gear ring is axially on the same line with the longitudinal guide plates when being welded, and arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate along the circumference to form the heat medium channel together with the longitudinal guide plates.
5. The indirect uniform heating structure of the jacketed reaction kettle according to claim 1, which is characterized in that: the kettle body is provided with a wheel belt, the wheel belt is welded on the inner thickened cylinder at the wheel belt position through a wheel belt radial supporting plate, circumferential reinforcing plates are welded at two axial ends of the wheel belt radial supporting plate, the inner cylinder is welded at the two axial ends of the inner thickened cylinder at the wheel belt position, the wheel belt is connected with the inner cylinder body 11, and strong supporting rigidity is realized; the wheel belt radial supporting plates are uniformly distributed along the circumference, the distribution quantity of the wheel belt radial supporting plates on the circumference is the same as that of the longitudinal guide plates, the wheel belt radial supporting plates and the longitudinal guide plates are axially on the same line when being welded, arc-shaped grooves are uniformly distributed on the circumferential reinforcing plate along the circumference, and a heat medium channel is formed together with the longitudinal guide plates.
6. The indirect uniform heating structure of the jacketed reaction kettle according to claim 5, which is characterized in that: the wheel belt radial supporting plates are welded with wheel belt position partition plates at the positions where the wheel belt radial supporting plates are arranged pairwise, the wheel belt position partition plates are identical to the outer cylinder body in the radial welding position, and the wheel belt radial supporting plates, the wheel belt position partition plates and the wheel belt position thickening inner cylinder form a plurality of heat medium channels along the circumference.
7. The indirect uniform heating structure of the jacketed reaction kettle according to claim 6, wherein: a space for installing a heat insulating material is formed between the outside of the clapboard at the belt and the inner hole of the belt, so that heat is prevented from dissipating; and the right end face of the belt pulley is welded with a belt pulley axial positioning plate to realize the axial positioning of the belt pulley.
8. A method for manufacturing a jacket type reactor indirect uniform heating structure according to any one of claims 1 to 7, comprising the steps of:
(1) Welding end socket assemblies at two ends of the reaction kettle:
both ends head subassembly includes: the flange assembly, the inner and outer seal head supporting ribs, the inner seal head and the outer seal head; welding the inner end enclosure and the outer end enclosure at two ends of the reaction kettle together through the inner end enclosure supporting rib and the outer end enclosure supporting rib which are connected in the middle, cutting out a central large hole of a welding flange assembly at the centers of the inner end enclosure and the outer end enclosure, and reserving machining allowance; then, an inner end socket and an outer end socket large end face welding groove and a central large hole are machined to reach the size by a large vertical lathe; welding the welded flange assembly with the machining allowance and the large holes in the centers of the inner seal head and the outer seal head; removing the residual welding stress after welding, and then processing the connecting flange surface of the flange assembly;
(2) And (3) welding a wheel belt part assembly:
the belt station assembly includes: the wheel belt, the wheel belt thickening inner cylinder, the wheel belt radial support plate, the circumferential reinforcing plate, the wheel belt axial positioning plate and the wheel belt partition plate are uniformly welded outside the wheel belt thickening inner cylinder; then welding circumferential reinforcing plates on two end faces of the radial bearing plate of the wheel belt; welding a belt partition plate and a belt axial positioning plate between the radial belt supporting plates; removing residual stress after welding, performing finish machining on the surface matched with the belt on a vertical lathe, and machining a welding groove at the two ends of the thickened inner cylinder at the belt;
(3) Welding the large gear ring component assembly:
the large ring gear component assembly comprises: the large gear ring mounting cylinder, the large gear ring mounting spring plate, the thickened inner cylinder at the large gear ring, the large gear ring radial bearing plate and the circumferential reinforcing plate are arranged on the large gear ring mounting cylinder; the large gear ring and the large gear ring are provided with the spring plate, and construction is carried out on the installation site; then a large gear ring radial support plate is uniformly welded outside the thickened inner cylinder at the large gear ring; then welding a large gear ring mounting cylinder outside to ensure that the concentricity is 2mm; then welding circumferential reinforcing plates on two end surfaces of the radial bearing plate of the large gear ring; removing residual stress after welding, and processing the outer circular surface of the large gear ring installation cylinder and a welding groove of the thickened inner cylinder at the large gear ring on a vertical lathe;
(4) Welding the middle inner cylinder 11:
the middle inner cylinder body comprises a plurality of sections, and is subjected to rounding, welding and circle correction according to design sections, the roundness is controlled within 2mm, a 'Mi' -shaped support is welded inside to ensure the roundness, and a certain distance is staggered according to a standard longitudinal welding line during butt joint;
(5) The inner cylinder body is in butt welding with the belt wheel part assembly, the large gear part assembly and the end enclosure assemblies at two ends, so that the coaxiality is ensured;
(6) According to the arrangement on a design drawing, an end surface flow baffle, a longitudinal flow guide plate, an axial main channel partition plate and a circumferential flow baffle are respectively welded on the inner cylinder body, the thickened inner cylinder at the large gear ring and the thickened inner cylinder at the wheel belt in a cross section manner, and the welding process is carried out by paying attention to equal intervals along the circumferential direction, so that a foundation is laid for the outer cylinder body to be welded below;
(7) Welding an outer cylinder body:
the outer cylinder is divided into sections according to the axial size of the reaction kettle, namely an end surface flow baffle, a circumferential reinforcing plate at a large gear ring and a circumferential reinforcing plate at a wheel band, the sections are respectively rounded, long-hole-shaped outer cylinder welding spots are cut on the surface of the outer cylinder at intervals, the circumferential interval is the same as the external intervals of the longitudinal flow baffle and the axial main channel partition plate, the outer cylinder is welded on the end surface flow baffle, the longitudinal flow baffle, the axial main channel partition plate and the outer side of the circumferential flow baffle along the circumferential section, the axial end surface is aligned with the circumferential flow baffle during butt joint, a welding seam space is reserved, the circumferentially cut outer cylinder welding spots are in the same line with the longitudinal flow baffle and the axial main channel partition plate, the welding is carried out after alignment and positioning, and the outer cylinder welding spots and the end surface circumferential welding seams of the end surface flow baffle and the circumferential flow baffle are completely repaired during welding;
(8) Welding auxiliary components:
cutting a manhole, stopping the machine, emptying a discharge hole for the reaction kettle, and welding a manhole assembly and a discharge hole assembly; and welding an internal lifting plate and a discharge guide plate.
9. The method for manufacturing the indirect uniform heating structure of the jacketed reaction kettle according to claim 8, wherein the method comprises the following steps: in the step (1), the large end face circle concentricity of the inner seal head and the outer seal head is controlled within 2mm during welding; the concentricity between the outer circle of the large end faces of the inner end socket and the outer end socket is ensured to be within 1 mm;
in the step (2), the wheel belt is thickened, the inner cylinder is rounded, welded and corrected, the roundness is controlled within 2mm, and a bearing shaped like a Chinese character 'mi' is welded inside to ensure the roundness;
in the step (3), the large gear ring is thickened, the inner cylinder is rounded, welded and corrected, the roundness is controlled within 2mm, and a bearing shaped like a Chinese character 'mi' is welded inside to ensure the roundness.
10. The method for manufacturing the indirect uniform heating structure of the jacket-type reaction kettle according to claim 8, which comprises the following steps: in the step (7), the size of the welding point of the long-hole-shaped outer cylinder is as follows: long holes with the length of 60mm multiplied by the width of 10mm and the distance of 400-500 mm.
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| CN114225861A (en) * | 2022-01-22 | 2022-03-25 | 上海冰通实业有限公司 | Novel finned eddy jacket reactor |
| CN118123314A (en) * | 2024-05-10 | 2024-06-04 | 成都环龙智能机器人有限公司 | Welding equipment and method for skirt of titanium sponge reaction tank |
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| JP2002233861A (en) * | 2001-02-13 | 2002-08-20 | Udono Iki:Kk | Waste water sterilization treatment equipment |
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| CN115228404B (en) | 2024-09-13 |
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