CN110921484B - Hoisting device and hoisting method for wet-process sulfuric acid production equipment - Google Patents
Hoisting device and hoisting method for wet-process sulfuric acid production equipment Download PDFInfo
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- CN110921484B CN110921484B CN201911121951.3A CN201911121951A CN110921484B CN 110921484 B CN110921484 B CN 110921484B CN 201911121951 A CN201911121951 A CN 201911121951A CN 110921484 B CN110921484 B CN 110921484B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
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Abstract
The embodiment of the invention provides a hoisting device and a hoisting method for wet-process sulfuric acid preparation equipment, belonging to the field of hoisting devices for sulfuric acid preparation devices. The lifting lugs are matched with the lifting points, the lifting points are fixed on the inner wall of the converter, the lifting lugs are fixed outside the heat exchanger, the lifting device is hung on the lifting points and is provided with a zipper structure, one end of the zipper structure is connected with the matched lifting lugs, and the other end of the zipper structure is connected with lifting power. The lifting point is arranged on the inner wall of the converter, the lifting lugs are arranged on the surface of the heat exchanger, the lifting device is fixed on the lifting point, and the heat exchanger is lifted from the lifting lugs by the lifting device for lifting maintenance. The top cover of the converter does not need to be detached in the hoisting process, a large crane does not need to be used, the catalyst in the converter does not need to be transferred out, the construction period is greatly shortened, the hoisting difficulty is reduced, the construction cost is reduced, and the production efficiency is improved.
Description
Technical Field
The invention relates to the field of hoisting devices for sulfuric acid preparation devices, in particular to a hoisting device and a hoisting method for wet-process sulfuric acid preparation equipment.
Background
The SO3 (sulfur trioxide) converter of a large WSA (wet process sulfuric acid) plant adopts a built-in heat exchanger, particularly a cooler of a one-stage process, the mass of the plant is large, and the conventional heat exchanger can reach 90 tons generally. During the use process, the heat exchanger has the possibility of generating the fault that the installation welding seam is torn, so that the heat exchanger falls and deflects, and the heat exchanger needs to be repaired. During maintenance, the mobile maintenance is carried out by adopting a hoisting mode. The traditional hoisting method is that a heat-insulating top cover at the top of the SO3 converter is removed, a catalyst above a heat exchanger is completely unloaded, a large crane is adopted to hoist the heat exchanger from the top of the converter without the top cover to a steel wire rope, and maintenance operation is carried out after restoration.
In the mode, the top cover needs to be cut off, the catalyst is unloaded, large hoisting equipment is called, rain-proof and moisture-proof measures need to be taken at the top of the converter in order to prevent the residual catalyst in the converter from being affected with damp, a large amount of manpower, material resources and financial resources are needed, construction is easily affected by weather, the construction period usually needs more than three months, and the influence on production is great. Meanwhile, the difficulty of later-stage top cover recovery team formation is high, and the use difficulty is increased.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a hoisting device and a hoisting method for wet-process sulfuric acid production equipment, which reduce the operation difficulty in the hoisting process of a heat exchanger.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a hoisting device for wet-process sulfuric acid production equipment, wherein the wet-process sulfuric acid production equipment is provided with a converter, a heat exchanger is arranged in a cavity of the converter, and the hoisting device comprises: the lifting device comprises a plurality of lifting points fixed on the inner wall of the converter and a plurality of lifting lugs matched with the lifting points, wherein the plurality of lifting lugs are fixed outside the heat exchanger. And the lifting devices are matched with the lifting points, one end of each lifting device is connected with the matched lifting point, and the other end corresponding to the one end of each lifting device is connected with the matched lifting lug, so that the heat exchanger is lifted.
In a preferred technical scheme of the invention, the lifting and pulling paper is provided with a zipper structure, the zipper structure can slide in the lifting and pulling device, one end of the zipper structure is connected with the matched lifting lug, and the other end of the zipper structure is connected with a first lifting and pulling power.
In a preferred embodiment of the present invention, the lifting device is configured as a chain block, the chain block is suspended from the lifting point, and a lifting chain of the chain block is hooked to the lifting lug matched with the lifting point.
In a preferred technical scheme of the present invention, the suspension point is provided with a reinforcement device for improving stress distribution of the stress point.
In a preferred technical scheme of the invention, the reinforcing device comprises circular arc-shaped studs fixed on the left side and the right side of the lifting point. And the circular arc-shaped studs are fixedly connected with the inner wall of the converter.
In a preferred technical scheme of the invention, the reinforcing device comprises H-shaped steel fixed at the upper end and the lower end of the lifting point (4). And the H-shaped steel is also fixedly connected with the inner wall of the converter.
In a preferred technical scheme of the invention, the hoisting device further comprises an auxiliary lifting device, an auxiliary lifting lug arranged outside the heat exchanger, and an auxiliary lifting point arranged on the inner wall of the converter and corresponding to the auxiliary lifting lug. The auxiliary lifting device is suspended on the auxiliary lifting point, one end of the auxiliary lifting device is connected with the auxiliary lifting point, and the other end of the auxiliary lifting device is connected with second lifting power.
In a preferred technical scheme of the invention, a reinforcing rib plate is arranged above the lifting lug and is fixed on the heat exchanger. And/or the lifting lugs are configured to be 4, and 4 lifting lugs are respectively fixed on end corners of the heat exchanger. And/or, the converter comprises an SO3 converter.
The invention also provides wet-process sulfuric acid production equipment which comprises a converter and a heat exchanger arranged in the cavity of the converter, and the wet-process sulfuric acid production equipment also comprises a hoisting device of the wet-process sulfuric acid production equipment in any one of the technical schemes in the preamble.
The invention also provides a hoisting method of the hoisting device for the wet-process sulfuric acid production equipment, which comprises the following steps: welding each lifting lug to the outside of the heat exchanger;
welding each lifting point on the inner wall of the converter, wherein the height of each lifting point is higher than the height of the converter; and the hoisting point is positioned on the converter as close as possible to the lifting lug matched with the hoisting point. And (3) grooving one of the welding sides of the hoisting point and the converter, or grooving both sides of the welding side of the hoisting point and the converter, and then welding by using a welding rod.
And detecting whether the welding surface is qualified.
And after the welding surface is detected to be qualified, hanging the lifting device on the lifting point matched with the lifting device, connecting the lifting device to the lifting lug matched with the lifting device, and lifting the heat exchanger by pulling the lifting device.
The invention has the beneficial effects that:
the invention provides a hoisting device and a hoisting method for wet-process sulfuric acid production equipment. The top cover of the converter does not need to be detached in the hoisting process, a large crane does not need to be used, the catalyst in the converter does not need to be transferred out, the construction period is greatly shortened, the hoisting difficulty is reduced, the construction cost is reduced, and the production efficiency and the economic benefit are improved.
Drawings
Fig. 1 is a schematic front view of a hoisting device for a wet-process sulfuric acid production apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a hoisting device for a wet-process sulfuric acid production apparatus according to an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a schematic structural diagram of a hoisting device for a wet-process sulfuric acid production plant, which is provided by the embodiment of the invention and adopts 4 lifting lug heat exchangers;
FIG. 5 is a schematic structural diagram of a top view of a lifting point of a lifting device for a wet-process sulfuric acid production apparatus according to an embodiment of the present invention;
FIG. 6 is a schematic side view of a hoisting point of the hoisting device for wet-process sulfuric acid production equipment according to the embodiment of the invention;
fig. 7 is a schematic structural diagram of a top view of a hoisting device for a wet-process sulfuric acid production plant provided by the embodiment of the invention, which adopts 2 hoisting points;
fig. 8 is a schematic structural diagram of a hoisting device for a wet-process sulfuric acid production plant, which is provided by the specific embodiment of the invention and adopts 2 lifting lug heat exchangers.
FIG. 9 is a schematic view of a hanger welding provided by an embodiment of the present invention;
fig. 10 is a schematic structural view of a reinforcing apparatus provided in a building according to an embodiment of the present invention.
In the figure:
1. the device comprises a converter, 2, a heat exchanger, 3, lifting lugs, 4, lifting points, 5, a lifting device, 6, auxiliary lifting points, 7, auxiliary lifting lugs, 8, auxiliary lifting devices, 31, circular-arc-shaped studs, 32, H-shaped steel, 33 and reinforcing rib plates.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1-4, in the embodiment, a hoisting device for a wet-process sulfuric acid production plant is provided, the wet-process sulfuric acid production plant has a converter 1, a heat exchanger 2 is disposed in a cavity of the converter 1, the hoisting device includes a plurality of hoisting points 4 fixed on an inner wall of the converter 1, and a plurality of lifting lugs 3 disposed in cooperation with the hoisting points 4, wherein the plurality of lifting lugs 3 are fixed outside the heat exchanger 2. And a plurality of lifting devices 5 which are matched with the lifting points 4 and the lifting lugs 3. One end of each lifting device 5 is connected with a matched lifting point 4, and the other end corresponding to one end is connected with a matched lifting lug 3, so that the heat exchanger 2 is lifted. The converter 1 in this example is a sulfur trioxide converter.
It should be noted that although the converter 1 in the wet-process sulfuric acid production plant shown in the embodiment of the present invention is a sulfur trioxide converter, it can be understood by those skilled in the art that when sulfuric acid is produced in other ways, the converter mentioned in the present invention can be used in other converters, and is not limited to the SO3 converter.
The heat exchanger 2 is generally in a cuboid shape, the lifting lugs 3 are fixedly welded on the side wall of the heat exchanger 2, the position of the lifting points 4 is confirmed by a lifting responsible person, the position of the lifting points 4 is higher than the installation position of the heat exchanger 2, and the lifting points 4 are welded on the inner wall of the converter 1 by a welder. Meanwhile, the arrangement of the lifting points 4 also needs to correspond to the positions of the lifting lugs 3, each lifting lug 3 corresponds to one lifting point 4, after the height of each lifting lug 4 is determined, the position of each lifting lug 4 in the horizontal direction is determined to be as close to the corresponding lifting lug 3 as possible, and the lifting points 4 are arranged perpendicular to the side wall of the heat exchanger 2. The lifting device 5 is fixed to the lifting point 4 and the lifting end of the lifting device 5 is connected to the lifting lug 3 corresponding to the lifting point 4, the pulling end of the lifting device 5 hanging below the converter 1. And a plurality of operators pull the tension ends of the lifting devices 5 simultaneously to lift the heat exchanger 2. Other power sources, such as electric motors, oil burners, etc., may be used to pull the pulling end of the pulling device 5. Because the heat exchanger 2 is pulled by the plurality of pulling devices 5 at the same time, the weight of heat exchange is dispersed to the plurality of pulling devices 5, and the more pulling devices 5 are arranged, the less pulling force is required. After the gravity is dispersed in such a way, the heat exchanger 2 can be pulled by using less pulling force without a large crane. After the heat exchanger 2 is pulled to a proper height, operations such as maintenance, welding and the like can be carried out.
In one embodiment of the invention, the lifting device 5 is provided with a zipper structure, which is slidable within the lifting device 5, one end of the zipper structure being connected to the associated lifting lug 3 and the other end of the zipper structure being connected to the first lifting power. The zipper structure takes the hoisting device as a fulcrum, and the first lifting power configuration is pulled by a hand or by a motor, a fuel engine and other power. The first pulling force is the main pulling force, and it must be ensured that the pulling force is large enough to pull up the heat exchanger 2.
In one embodiment of the invention the lifting device 5 is configured as a chain block, which is suspended from a lifting point 4, and the lifting chain of which is hooked to a lifting lug 3 matching the lifting point 4. The chain block is also called a chain block, and is a manual hoisting device with simple structure and strong hoisting capacity. The chain block is connected with the hanging point 4 and the lifting lug 3 through hanging and hooking, and is tightened during bearing, so that the chain block is not easy to fall off. In the use process, the hoisting chain drives the heat exchanger 2 to ascend or descend by dragging the manual chain to rotate clockwise or anticlockwise. Meanwhile, the chain block adopts a ratchet friction sheet type one-way brake, and can automatically brake under load, so that the condition that the heat exchanger 2 slips down due to force loss of an operator in the lifting process can be avoided. In addition, the chain block is pulled by hands, so that the lifting and descending height can be directly and accurately regulated and controlled by hands compared with a large crane, and the construction operation precision is improved.
In one embodiment of the invention, as shown in fig. 5, the suspension points 4 are provided with stiffening means for improving stress distribution at the force-bearing points. The reinforcing means comprises circular arc-shaped studs 31 fixed to the left and right sides of the lifting point 4. And the circular arc-shaped studs 31 are also fixedly connected with the inner wall of the converter 1. The radian of the circular arc-shaped stud 31 is consistent with that of the inner wall of the heat exchanger 2 and is tightly attached to the inner wall of the special converter 1. In the hoisting process, the lifting device 5 lifts the heat exchanger 2 by taking the hoisting point 4 as a fulcrum, and the circular arc-shaped studs 31 connected with the hoisting point 4 can disperse the stress condition of the inner wall of the converter 1 in the horizontal direction. The single-point stress of the original lifting point 4 on the inner wall of the converter 1 is changed into the large-area belt-shaped stress of the lifting point 4 and the circular arc-shaped vertical ribs 31 on the two sides, so that the situation that the single-point stress of the converter 1 is too large and the converter is broken is avoided.
In one embodiment of the present invention, as shown in fig. 6, the reinforcing means includes H-shaped steels 32 fixed to upper and lower ends of the lifting point 4. And the H-shaped steel 32 is also fixedly connected with the inner wall of the converter 1. . The H-beam 32 is fixed to the inner wall of the converter 1. The H-shaped steel 32 acts on the circular arc-shaped studs 31, and the H-shaped steel 32 disperses the stress on the inner wall of the converter 1 in the vertical direction, so that the converter 1 is protected from being damaged.
In one embodiment of the invention, the hoisting device further comprises an auxiliary lifting device 8, an auxiliary lifting lug 7 arranged outside the heat exchanger 2, and an auxiliary lifting point 2 arranged on the inner wall of the converter 1 and corresponding to the position of the auxiliary lifting lug 7. Wherein, the auxiliary lifting device 8 is suspended on the auxiliary lifting point, one end of the auxiliary lifting device is connected with the auxiliary lifting point 6, and the other end of the auxiliary lifting device 8 is connected with the second lifting power. The heat exchanger 2 is generally cuboid in shape, and during hoisting, the lifting lugs 3 are generally arranged at end corners or two ends of the heat exchanger 2. In order to avoid side turning during the hoisting process, an auxiliary lifting lug 7 is arranged outside the heat exchanger 2, the auxiliary lifting lug 7 and the lifting lug 3 are arranged on different surfaces of the heat exchanger, and an auxiliary lifting device 8 is used for connecting an auxiliary lifting point 6 and the auxiliary lifting lug 7. The lifting device 5 of the auxiliary lifting point 6 is not required to provide lifting force during the lifting process, and the auxiliary lifting device 8 only needs to be kept in a tensioning state. The second lifting power which powers the auxiliary lifting device 8 does not therefore need as much force as the preceding first lifting power. In this embodiment, the second lifting power may be manual traction, electric motor traction, or oil-fired machine traction according to the needs of actual conditions. The heat exchanger is pulled by the auxiliary lifting device 8, the heat exchanger 2 is prevented from inclining to the direction of the auxiliary lifting lug 7, and the damage of devices caused by collision between the heat exchanger 2 and the wall of the converter 1 is avoided.
In one embodiment of the invention, the lifting lug 3, the lifting point 4 and the auxiliary lifting point 6 are all made of stainless steel. Stainless steel, particularly S30408 stainless steel, is a general purpose stainless steel with strong corrosion resistance and formability. The lifting lug 3 can be prevented from being corroded by various chemical substances in the converter 1 due to strong corrosivity, and the lifting lug 3, the lifting point 4 and the auxiliary lifting point 6 are not easy to deform and can stably and reliably work due to strong formability.
In one embodiment of the invention, a reinforcing rib plate 33 is arranged above the lifting lug 3, and the reinforcing rib plate 33 is fixed on the heat exchanger 2. The reinforcing rib plate 33 can disperse the acting force of the lifting lug 3 on the heat exchanger 2, and the original single-point force action is changed into a strip-shaped force action, so that the damage of the heat exchanger 2 due to the single-point force action is avoided.
In one embodiment of the present invention, the lifting lugs 3 are configured to be 4, and 4 lifting lugs 3 are respectively fixed on the end corners of the heat exchanger 2. Because the heat exchanger 2 is generally rectangular, the lifting lugs 3 are arranged on 4 end corners of the heat exchanger 2 for lifting, so that the heat exchanger 2 can keep balance, and the height and the angle of the heat exchanger 2 can be conveniently and directly adjusted.
In one embodiment of the present invention, as shown in fig. 7 to 8, the lifting lugs 3 are configured in 2, and 2 lifting lugs 3 are respectively fixed on the left and right side walls of the heat exchanger 2. Converter 1 comprises an SO3 converter. The lifting lugs 3 are arranged at the two ends of the heat exchanger 2 to carry out lifting, so that the lifting points 4 and the quantity of the lifting lugs 3 can be saved to the maximum extent, and the cost can be further saved. However, it should be noted that since the number of the pulling devices 5 is reduced in the present embodiment, the pulling device 5 having a larger pulling weight is required to pull the heat exchanger 2.
The hoisting structure of the embodiment of the invention ensures the most critical requirements of strength and precision of hoisting, and can realize safe and accurate hoisting operation. Because the catalyst does not need to be discharged, the crushing loss and activity damage of the catalyst are avoided.
The invention also provides wet-process sulfuric acid preparation equipment which comprises the converter 1 and the heat exchanger 2 arranged in the cavity of the converter 1, wherein the wet-process sulfuric acid preparation equipment comprises the hoisting device for the wet-process sulfuric acid preparation equipment in any embodiment.
The invention also provides a hoisting method of the hoisting device for the wet-process sulfuric acid production equipment, which comprises the following steps:
each lifting lug 3 is welded to the outside of the heat exchanger 2. Each lifting point 4 is welded to the inner wall of the converter 1, wherein each lifting point 4 is arranged at a height higher than the height of the converter 2, and the lifting point 4 is arranged as close as possible to the lifting lug 3 matching with the lifting lug. In this embodiment, each lifting lug 3 is welded to an end corner of the heat exchanger 2.
As shown in FIG. 9, the hoisting point 4 and one of the welding sides of the converter 1 are beveled, or the hoisting point 4 and the welding side of the converter 1 are beveled on both sides and then welded with a welding rod. Because the wall of the converter 1 is relatively thin, the direct welding may cause the welding of the hoisting point 4, and the welding is not firm, except the reinforcement device adopted in the former embodiment to strengthen the structural rigidity, the embodiment opens a double-face groove on the side of the phase welding, i.e. the wall of the converter 1 is expected to be opened on the hoisting point 4, and the double-face groove is configured to be K-type, the setting mode of the K-type groove, can make the welding rod go deep into the joint of the converter 1 and the hoisting point, so that the two joints are more tight, in addition, during the welding, the embodiment adopts the a102 welding rod for welding, the a102 welding rod is a Cr19Ni10 stainless steel welding rod with titanium-calcium type coating, the deposited metal has good mechanical property and intercrystalline corrosion resistance, and the welding rod is adopted for welding, so that the hoisting point 4 and the converter 1 are more tightly connected. Except for the case that the welding sides of the hoisting point 4 and the converter 1 are provided with grooves in the embodiment, the welding can also be carried out by only providing grooves on the hoisting point 4 or the converter 1 wall according to actual needs.
Besides the K-shaped groove, a V-shaped groove or an X-shaped groove can be adopted according to actual conditions. The V-groove is easy to machine, but angular deformation is easy to occur after welding. Compared with the V-shaped groove, the X-shaped groove can reduce about half of weld metal under the same thickness, and has small deformation and internal stress after welding. Therefore, the groove is not limited to the K-groove in this embodiment, and can be flexibly selected according to actual requirements.
And detecting whether the welding surface of the lifting point 4 and the converter 1 is qualified. In the present embodiment, the monitoring method used is PT monitoring (penetration detection), and PT detection is a non-destructive detection method, which is mainly used to detect surface damage such as cracks that cannot be identified by the naked eye, and by this method, defects (cracks), pores, porosity, delamination, lack of penetration and fusion, etc. at the welding point of the hoisting point 3 and the converter 1 can be detected.
And after the welding surface is detected to be qualified, hanging the lifting device 5 on a matched lifting point, connecting the lifting device 5 to a matched lifting lug 3, and lifting the heat exchanger 2 by pulling the lifting device 5.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. The present invention is not to be limited by the specific embodiments disclosed herein, and other embodiments that fall within the scope of the claims of the present application are intended to be within the scope of the present invention.
Claims (7)
1. A hoisting device for wet-process sulfuric acid production equipment, wherein the wet-process sulfuric acid production equipment is provided with a converter (1), a heat exchanger (2) is arranged in a cavity of the converter (1), and the hoisting device is characterized by comprising:
a plurality of lifting points (4) fixed to the inner wall of the converter (1);
the lifting lugs (3) are matched with the lifting points (4), and the lifting lugs (3) are fixed outside the heat exchanger (2); and the number of the first and second groups,
a plurality of lifting devices (5) which are matched with the lifting points (4) and the lifting lugs (3), wherein one end of each lifting device (5) is connected with the matched lifting point (4), and the other end corresponding to one end is connected with the matched lifting lug, so that the heat exchanger (2) is lifted;
a reinforcing device for improving stress distribution of stress points is arranged on the lifting point (4);
the reinforcing device comprises circular arc-shaped vertical ribs (31) fixed on the left side and the right side of the lifting point (4), and the circular arc-shaped vertical ribs (31) are also fixedly connected with the inner wall of the converter (1);
the auxiliary lifting lug (7) is arranged outside the heat exchanger (2), and the auxiliary lifting point (6) is arranged on the inner wall of the converter (1) and corresponds to the auxiliary lifting lug (7);
the auxiliary lifting device (8) is suspended on the auxiliary lifting point (6), one end of the auxiliary lifting device (8) is connected with the auxiliary lifting point (6), and the other end of the auxiliary lifting device (8) is connected with a second lifting power.
2. A hoisting device for wet-process sulfuric acid production equipment, wherein the wet-process sulfuric acid production equipment is provided with a converter (1), a heat exchanger (2) is arranged in a cavity of the converter (1), and the hoisting device is characterized by comprising:
a plurality of lifting points (4) fixed to the inner wall of the converter (1);
the lifting lugs (3) are matched with the lifting points (4), and the lifting lugs (3) are fixed outside the heat exchanger (2); and the number of the first and second groups,
a plurality of lifting devices (5) which are matched with the lifting points (4) and the lifting lugs (3), wherein one end of each lifting device (5) is connected with the matched lifting point (4), and the other end corresponding to one end is connected with the matched lifting lug, so that the heat exchanger (2) is lifted;
a reinforcing device for improving stress distribution of stress points is arranged on the lifting point (4);
the reinforcing device comprises H-shaped steel (32) fixed at the upper end and the lower end of the lifting point (4), and the H-shaped steel (32) is also fixedly connected with the inner wall of the converter (1); the auxiliary lifting lug (7) is arranged outside the heat exchanger (2), and the auxiliary lifting point (6) is arranged on the inner wall of the converter (1) and corresponds to the auxiliary lifting lug (7);
the auxiliary lifting device (8) is suspended on the auxiliary lifting point (6), one end of the auxiliary lifting device (8) is connected with the auxiliary lifting point (6), and the other end of the auxiliary lifting device (8) is connected with a second lifting power.
3. The hoisting device of the wet-process sulfuric acid production equipment according to claim 1 or 2, characterized in that:
the lifting device (5) is provided with a zipper structure, the zipper structure can slide in the lifting device (5), one end of the zipper structure is connected with the lifting lug (3) matched with the zipper structure, and the other end of the zipper structure is connected with first lifting power.
4. The hoisting device of the wet-process sulfuric acid production equipment according to claim 1 or 2, wherein the lifting device (5) is configured as an inverted chain, the inverted chain is suspended on the lifting point (4), and the lifting chain of the inverted chain is hooked on the lifting lug (3) matched with the lifting point (4).
5. The hoisting device of the wet-process sulfuric acid production equipment according to claim 1 or 2, wherein a reinforcing rib plate (33) is arranged above the lifting lug (3), and the reinforcing rib plate (33) is fixed on the heat exchanger (2); and/or the presence of a gas in the gas,
the lifting lugs (3) are configured to be 4, and the 4 lifting lugs (3) are respectively fixed on the end corners of the heat exchanger (2); and/or the presence of a gas in the gas,
the converter (1) comprises an SO3 converter.
6. A wet-process sulfuric acid production plant comprising a converter (1) and a heat exchanger (2) built into the cavity of the converter (1), characterized in that the wet-process sulfuric acid production plant further comprises a hoisting device of the wet-process sulfuric acid production plant according to any one of claims 1 to 5.
7. Hoisting method for a hoisting device according to any one of claims 1-5, characterized in that the method comprises:
welding each lifting lug (3) to the outside of the heat exchanger (2);
welding each lifting point (4) on the inner wall of the converter (1), wherein the height of each lifting point (4) is higher than the height of the converter (1); and the lifting point (4) is positioned on the converter (1) as close as possible to the lifting lug (3) matched with the lifting point;
beveling one of the welding sides of the hoisting point (4) and the converter (1), or beveling the welding side of the hoisting point (4) and the converter (1) and then welding by using a welding rod;
detecting whether the welding surface is qualified; after the welding surface is detected to be qualified, the lifting device (5) is hung on the lifting point (4) matched with the welding surface, the lifting device (5) is connected to the matched lifting lug (3), and the heat exchanger (2) is lifted by pulling the lifting device (5).
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| CN201911121951.3A CN110921484B (en) | 2019-11-15 | 2019-11-15 | Hoisting device and hoisting method for wet-process sulfuric acid production equipment |
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| CN201911121951.3A CN110921484B (en) | 2019-11-15 | 2019-11-15 | Hoisting device and hoisting method for wet-process sulfuric acid production equipment |
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| CN110921484B true CN110921484B (en) | 2021-11-09 |
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| GB747469A (en) * | 1953-09-09 | 1956-04-04 | Carl Josef Trumper | Apparatus for lifting and lowering dust-bins, barrels and like loads |
| CN105171282A (en) * | 2015-09-10 | 2015-12-23 | 中国十九冶集团有限公司 | Converter shell mounting method |
| CN107916316A (en) * | 2017-10-26 | 2018-04-17 | 宣化钢铁集团有限责任公司 | A kind of converter lining brick masonry apparatus and method that can be integrally built by laying bricks or stones |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993002B (en) * | 2009-08-11 | 2013-04-24 | 中煤第五建设公司 | Automatic lift type shaft hanging stage |
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2019
- 2019-11-15 CN CN201911121951.3A patent/CN110921484B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB747469A (en) * | 1953-09-09 | 1956-04-04 | Carl Josef Trumper | Apparatus for lifting and lowering dust-bins, barrels and like loads |
| CN105171282A (en) * | 2015-09-10 | 2015-12-23 | 中国十九冶集团有限公司 | Converter shell mounting method |
| CN107916316A (en) * | 2017-10-26 | 2018-04-17 | 宣化钢铁集团有限责任公司 | A kind of converter lining brick masonry apparatus and method that can be integrally built by laying bricks or stones |
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