CN116175159A - Installation system and installation construction method of second dehydrogenation reactor - Google Patents

Abstract

The application relates to the field of equipment installation, in particular to a system and a method for installing a second dehydrogenation reactor. The mounting system comprises a rail, a first supporting component and a second supporting component, wherein the rail is arranged in the horizontal direction, the front end of the rail can penetrate through the opening to extend to the upper side of the connecting pipe, the first supporting component can penetrate through the connecting pipe to extend to the inner cavity to form a support for the rail, the second supporting component is located outside the inner cavity and supports the rail, the mounting system further comprises a first bearing trolley for bearing a central guide cone, a second bearing trolley for bearing an inner net and a third bearing trolley for bearing an outer net, and the first bearing trolley, the second bearing trolley and the third bearing trolley are all arranged on the rail in a rolling mode. The installation method comprises the following steps: 1. paving a track; 2. installing a central diversion cone; 3. installing an intranet; 4. the utility model has the advantages of convenient installation.

Description

Installation system and installation construction method of second dehydrogenation reactor

Technical Field

The application relates to the field of equipment installation, in particular to a system and a method for installing a second dehydrogenation reactor.

Background

The key technology of the styrene device is that ethylbenzene is dehydrogenated to prepare styrene, and the key equipment is a first dehydrogenation reactor and a second dehydrogenation reactor of styrene, and the key equipment comprises a shell cylinder body, an inner distribution cylinder, an outer distribution cylinder and other parts.

The journal "popular science and technology" 14 volume 156 th page 114 discloses a design and manufacturing technical scheme of a second dehydrogenation reactor, when installing a shell cylinder, an inner distribution cylinder and an outer distribution cylinder, the assembly sequence is as follows: the outer distribution cylinder is installed, the inner distribution cylinder is installed, and the gas reaction cone is installed.

The patent CN105798567B also discloses a method for installing the inner and outer distribution cylinders in the dehydrogenation reactor, horizontally placing the outer distribution cylinders, arranging 2 arc-shaped outer guard plates at the bottom, connecting four outer trolleys which are manufactured with the outer guard plates by bolts, connecting 2 outer trolleys with each outer guard plate, spot-welding outer guide rails of two angle steels on the inner wall of the horizontal reactor cylinder, placing a main crane outside one end of the cylinder, then penetrating a steel wire rope on the main crane into the cylinder, fixing one end of the outer distribution cylinder, driving the main crane to slide along the outer guide rails until the end of the outer distribution cylinder contacts with a flange in the cylinder, then fixing the end of the outer distribution cylinder with the flange by an operator, then removing the outer trolleys and the outer guard plates, arranging inner guide rails of two angle steels at the inner bottom of the reinforcing ring, horizontally placing the inner distribution cylinder, arranging 2 arc-shaped inner guard plates at the bottom, connecting the four inner trolleys which are manufactured with the inner guard plates by bolts, connecting the steel wire rope on the main crane with one end of the inner distribution cylinder after penetrating the outer distribution cylinder, driving the steel wire rope to slide along the inner guide rails, driving the inner distribution cylinder and finally driving the inner guide rails to slide along the inner distribution cylinder and the inner guide rails to be in contact with the reinforcing ring.

In the two methods, the outer distribution cylinder is firstly installed and then the inner distribution cylinder is installed, as can be seen from the patent CN105798567B, only the outer distribution cylinder and the inner distribution cylinder are installed, namely, two tracks are paved, the tracks in the previous working procedure are removed before the inner distribution cylinder is installed, and more tracks are needed and the installation working procedure is more complicated.

Disclosure of Invention

In order to improve the installation convenience of the second dehydrogenation reactor, the application provides an installation system and an installation construction method of the second dehydrogenation reactor.

In a first aspect, the present application provides a mounting system of a second dehydrogenation reactor, the second dehydrogenation reactor includes barrel, center water conservancy diversion awl, intranet and outer net, and the barrel has the inner chamber, and the one end of barrel has the opening that is linked together with the inner chamber, and the lateral wall of barrel has the takeover with barrel inner chamber intercommunication, mounting system includes track, first supporting component and second supporting component, the track sets up along the horizontal direction, orbital front end can pass the opening and extend to the top of takeover, first supporting component can pass the takeover extends to the inner chamber in to form the support to the track, second supporting component is located outside the inner chamber, and right the track forms the support, mounting system still includes first bearing dolly that is used for bearing center water conservancy diversion awl, second bearing dolly that is used for bearing the intranet and third bearing dolly that is used for bearing the outer net, first bearing dolly, second bearing dolly and third bearing dolly all roll set up in on the track.

Through adopting above-mentioned technical scheme, during the installation, be horizontal with the barrel horizontal, the takeover of barrel is vertical downwards, be fixed in ground or other platforms with second supporting component lower extreme, then pass the opening of barrel with orbital front end and lay to the inner chamber in, make orbital front end be located takeover top, then pass the upper end of first supporting component and extend to the inner chamber in, form the support to orbital front end, then hoist the central guide cone on first bearing dolly through first bearing dolly, carry central guide cone to the inner chamber through first bearing dolly, with the barrel is fixed, then hoist the intranet on second bearing dolly, carry the intranet to the inner chamber through second bearing dolly, with the barrel is fixed, hoist the outer net on third bearing dolly at last, carry the outer net to the barrel through third bearing dolly, with the barrel is fixed. The utility model provides an ingenious takeover that has utilized barrel self in this application, lay the track in the barrel, and be fixed in on barrel or other parts, easy dismounting can not cause the damage to parts themselves to a track can realize the transport of center water conservancy diversion awl, intranet and outer net, need not multiple dismouting, improves the installation convenience.

Preferably, the first support assembly comprises a first support plate and a first scissor lift, the upper end of the first support plate is detachably connected with the front end of the track, the lower end of the first support plate is connected with the first scissor lift, the second support assembly comprises a second support plate and a second scissor lift, the upper end of the second support plate is connected with the track, and the lower end of the second support plate is connected with the second scissor lift.

Through adopting above-mentioned technical scheme, through the lift of first fork lift and second fork lift, the height of central water conservancy diversion awl, intranet, outer net during adjustable installation to adjust the concentricity between three and the barrel.

Preferably, the mounting system further comprises a barrel support assembly for bearing the barrel, the barrel support assembly comprises a barrel support plate and a fourth scissor lift, the upper end of the barrel support plate can be connected with the side wall of the barrel, and the lower end of the barrel is connected with the fourth scissor lift.

Through adopting above-mentioned technical scheme, the fourth is cut fork lift and is driven the barrel backup pad and go up and down, can drive the barrel and go up and down to adjust the difference in height between barrel and central water conservancy diversion awl, intranet, the outer net during installation, thereby adjust the concentricity between barrel and other parts.

Preferably, the front end of the track is fixedly provided with a horizontal motor, the output end of the horizontal motor is connected with a screw rod, a driving trolley is arranged on the track in a rolling mode, the driving trolley is provided with a nut in spiral fit with the screw rod, the driving trolley is provided with a first lifting driving source, a second lifting driving source and a third lifting driving source along the moving direction of the driving trolley, a first supporting block for supporting a central guide cone is arranged on the first lifting driving source, a second supporting block for supporting an inner net is arranged on the second lifting driving source, and a third supporting block for supporting an outer net is arranged on the third lifting driving source.

By adopting the technical scheme, after the central diversion cone is hoisted on the first supporting trolley, the first lifting driving source drives the first supporting plate to ascend and contact with the central diversion cone to form a support, and then the horizontal motor rotates to drive the driving trolley to move, so that a moving force is applied to the central diversion cone; the second lifting driving source and the third lifting driving source have the functions similar to those of the first lifting driving source and are matched with the inner net and the outer net respectively.

In a second aspect, the present application provides a method for installing a second dehydrogenation reactor, which adopts the following technical scheme:

the installation method of the second dehydrogenation reactor adopts the installation system and comprises the following steps:

(1) Paving a track: paving the track in the inner cavity of the cylinder;

(2) And (3) installing a central diversion cone: the central diversion cone is hoisted on a first bearing trolley on the track, the central diversion cone is conveyed into the inner cavity of the cylinder body through the first bearing trolley, and the central diversion cone is fixed with the cylinder body;

(3) And (3) installing an intranet: the inner net is hoisted on the second bearing trolley on the rail, the inner net is conveyed into the inner cavity of the cylinder body through the second bearing trolley, and the inner net is fixed with the cylinder body;

(4) And (3) installing an outer net: and the outer net is hoisted on the third bearing trolley on the rail, is conveyed into the inner cavity of the cylinder body through the third bearing trolley, and is fixed with the cylinder body.

Through adopting above-mentioned technical scheme, install central water conservancy diversion awl earlier, install the intranet again, install the outer net at last, through from inside to outside mounting means, adopt a track can, effectively improve the installation convenience.

Preferably, the central diversion cone comprises a front cylinder section and a rear cylinder section, before the step (1), the end socket of the cylinder body is vertically placed, then the front cylinder section is hoisted in the end socket through a crane, the front cylinder section is arranged on the end socket, a rice-shaped support is arranged in the front cylinder section, then the cylinder body is horizontally placed through the crane, and a track is paved; the step (2) further comprises: and (3) adjusting concentricity of the front cylinder section and the rear cylinder section, abutting against the rear end of the rear cylinder section through the supporting pipe to form a fulcrum, performing girth welding on the joint of the front cylinder section and the rear cylinder section, testing sagging amount of the rear end of the central diversion cone after welding, judging that the sagging amount is less than 10mm, and temporarily supporting the front end of the central diversion cone through a temporary supporting piece when the sagging amount is less than 10 mm.

Through adopting above-mentioned technical scheme, can effectively reduce the sagging volume, improve whole rigidity, support temporarily the position that the central water conservancy diversion awl is close to the front end can reduce the sagging volume of intranet net in-process.

Preferably, the step (3) further includes: set up assembly pulley and chain block in the barrel, hold the intranet through the suspender pocket, mention the front end of intranet, simultaneously at the rear end design hoisting point of intranet, also mention the rear end of intranet, adjust the intranet position through the chain block, make the installation department of intranet and the installation department of barrel align and fixed, then fix intranet and central water conservancy diversion awl mutually to be close to intranet front end department and carry out interim support to the intranet through interim support piece.

Through adopting above-mentioned technical scheme, through the position of chain hoist adjustment intranet, can adjust the concentricity of intranet, also can make the installation department of intranet and the installation department of barrel align, fix intranet and central water conservancy diversion awl mutually, can reduce the sagging volume of intranet, and design has temporary support piece, the sagging volume when the outer net advances the net can be reduced equally.

Preferably, the step (4) further includes: the front of the third bearing trolley is also provided with a positioning trolley which is arranged on the track in a rolling way, when the third bearing trolley bearing an outer net moves, the positioning trolley is positioned at the front end of the outer net, the bearing surface of the positioning trolley is contacted with the outer wall of the inner net, and the bearing surface of the positioning trolley is made of wear-resistant polytetrafluoroethylene.

Through adopting above-mentioned technical scheme, the design has the positioning dolly, when can reduce the outer net and advance the net, the sagging volume that the intranet took place, and the bearing face of positioning dolly adopts wear-resisting polytetrafluoroethylene can reduce the frictional force between positioning dolly and the intranet.

Preferably, the step (4) further includes: the front end and the rear end of the outer net are lifted by the sling bag, and the position of the outer net is adjusted by the chain block, so that the installation part of the outer net is aligned with the installation part of the cylinder body.

Drawings

Fig. 1 is a schematic structural diagram of the present embodiment when conveying an intranet.

Fig. 2 is a schematic structural diagram of the front shell ring of the central diversion cone according to the embodiment of the present application when connected with the lower end enclosure of the cylinder.

Fig. 3 is a schematic view of a track structure according to an embodiment of the present application.

Fig. 4 is a schematic diagram of the structure of the embodiment of the present application when transporting an outer net.

Reference numerals illustrate: 1. a cylinder; 11. an inner cavity; 12. an opening; 13. connecting pipe; 14. a lower end enclosure; 15. a barrel support assembly; 2. a central diversion cone; 21. a first support trolley; 22. a front cylinder section; 23. a rear cylinder section; 3. an intranet; 31. a second supporting trolley; 4. an outer net; 41. a third supporting trolley; 5. a track; 51. a first support assembly; 52. a second support assembly; 53. a cross bar; 54. a horizontal motor; 55. a screw rod; 56. driving a trolley; 57. a first support block; 58. a second support block; 59. a third support block; 6. positioning trolley; 7. and (5) supporting the tube.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a mounting system of a second dehydrogenation reactor.

As shown in fig. 1 and 2, the second dehydrogenation reactor comprises a cylinder 1, a central guide cone 2, an inner net 3 and an outer net 4, wherein the cylinder 1 is provided with an inner cavity 11, one end of the cylinder 1 is provided with an opening 12 communicated with the inner cavity 11, and the side wall of the cylinder 1 is provided with a connecting pipe 13 communicated with the inner cavity 11 of the cylinder 1.

In this embodiment, the barrel 1 includes a cylindrical body, the front end of the body is connected with a lower seal head 14, the front end of the barrel 1 is sealed by the lower seal head 14, the area between the connecting tube 13 and the lower seal head 14 is a reinforced section, the opening 12 is located at the rear end of the barrel 1, the aperture of the opening 12 is equal to the barrel diameter of the barrel 1, and after the installation is completed, the barrel 1, the central guide cone 2, the inner net 3 and the outer net 4 are coaxial.

As shown in fig. 1 and 3, the present mounting system includes a rail 5, a first support assembly 51, and a second support assembly 52.

Specifically, the rail 5 is disposed in a horizontal direction, the front end of the rail 5 can extend through the opening 12 to above the adapter 13, the first support member 51 can extend through the adapter 13 into the cavity 11 to support the rail 5, and the second support member 52 is located outside the cavity 11 and supports the rail 5.

In this embodiment, the track 5 includes two rails 53 disposed in parallel at intervals, and a raceway is formed on an upper surface of the rails 53.

The first support assembly 51 includes a first support plate and a first scissor lift, an upper end of the first support plate is detachably connected to a front end of the rail 5, and a lower end of the first support plate is connected to the first scissor lift.

The upper end of first backup pad is connected with dismantling of track 5 front end, and the detachable mode of accessible flange joint realizes, and the stability of support is better simultaneously, of course, also can adopt modes such as bolted connection, joint.

The lower extreme of first backup pad is connected with first fork lift, and the mode of undetachable such as accessible welding is preferred to the joint in this embodiment, sets up the draw-in groove at the lower extreme of first backup pad, and the upper end design of first fork machine is with draw-in groove matched with boss, when needs are detached first supporting component 51 from track 5's front end, can descend first fork machine, makes the boss shift out from the draw-in groove, takes away first fork machine, makes the whole length of first supporting component 51 shorten, conveniently takes out first backup pad.

The second support assembly 52 includes a second support plate and a second scissor lift, an upper end of the second support plate being connected to the rail 5, and a lower end of the second support plate being connected to the second scissor lift.

In this embodiment, the upper end of the second support plate is preferably detachably connected to the rail 5 by a flange, so that the second support plate is convenient to detach and store.

The lower end of the second supporting plate and the second scissor lift can be connected by adopting a flange, welded and the like.

As shown in fig. 1 and 3, the mounting system further includes a cylinder support assembly 15 for bearing the cylinder 1, the cylinder support assembly 15 includes a cylinder support plate and a fourth scissor lift, the upper end of the cylinder support plate can be connected with the sidewall of the cylinder 1, and the lower end of the cylinder 1 is connected with the fourth scissor lift.

Specifically, the upper end of the support plate of the cylinder 1 may be designed into an arc shape matching with the outer wall of the cylinder 1, so as to support and fix the cylinder 1, or an upper connecting portion may be designed on the side wall of the cylinder 1, and a lower connecting portion corresponding to the upper connecting portion may be designed on the upper end of the support plate of the cylinder 1, and the upper connecting portion and the lower connecting portion are connected by bolts or the like.

As shown in fig. 3 and 4, the installation system further comprises a first supporting trolley 21 for supporting the central guide cone 2, a second supporting trolley 31 for supporting the inner net 3, and a third supporting trolley 41 for supporting the outer net 4, wherein the first supporting trolley 21, the second supporting trolley 31, and the third supporting trolley 41 are all arranged on the rail 5 in a rolling manner.

In this embodiment, the first supporting trolley 21, the second supporting trolley 31 and the third supporting trolley 41 are sequentially distributed along the track 5 from front to back, the first supporting trolley 21 has two supporting trolleys, the upper end surface of the first supporting trolley 21 and the upper end surface of the second supporting trolley 31 are arc-shaped, are matched with the outer wall of the central diversion cone 2, and the height of the first supporting trolley 21 located in front is smaller than that of the first supporting trolley 21 located in the rear. The number of the second bearing trolleys 31 is two, and the upper end face of the second bearing trolley 31 is arc-shaped and is matched with the outer wall of the inner net 3. The third supporting trolley 41 has two upper end faces with arc shapes and is matched with the outer wall of the outer net 4. The lower ends of the first bearing trolley 21, the second bearing trolley 31 and the third bearing trolley 41 are matched with the rollaway nest on the track 5 through rollers.

As shown in fig. 3, preferably, a horizontal motor 54 is fixed at the front end of the track 5, a screw rod 55 is connected to the output end of the horizontal motor 54, a driving trolley 56 is arranged on the track 5 in a rolling manner, a nut in spiral fit with the screw rod 55 is arranged on the driving trolley 56, a first lifting driving source, a second lifting driving source and a third lifting driving source are arranged on the driving trolley 56 along the moving direction of the driving trolley, a first supporting block 57 for supporting the central guide cone 2 is arranged on the first lifting driving source, a second supporting block 58 for supporting the inner net 3 is arranged on the second lifting driving source, and a third supporting block 59 for supporting the outer net 4 is arranged on the third lifting driving source.

In this embodiment, the first lifting driving source, the second lifting driving source and the third lifting driving source adopt linear motors, the power wire harness is connected to the outside of the cylinder 1 through the connecting pipe 13, and the first lifting driving source, the second lifting driving source and the third lifting driving source are also distributed from front to back in sequence.

The implementation principle of the installation system of the second dehydrogenation reactor in the embodiment of the application is as follows: during installation, the cylinder 1 is horizontally arranged, the connecting pipe 13 of the cylinder 1 is vertically downward, the cylinder 1 is supported by the cylinder 1 supporting plate and the fourth scissor lift, the lower end of the second supporting component 52 is fixed on the ground or other platforms, then the front end of the rail 5 is paved into the inner cavity 11 through the opening 12 of the cylinder 1, the front end of the rail 5 is positioned above the connecting pipe 13, then the upper end of the first supporting component 51 is extended into the inner cavity 11 through the connecting pipe 13, the front end of the rail 5 is supported, and then the central guide cone 2, the inner net 3 and the outer net 4 are conveyed into the cylinder 1 for installation sequentially through the first supporting trolley 21, the second supporting trolley 31 and the third supporting trolley 41.

As shown in fig. 1 and 2, the embodiment of the application also discloses a method for installing the second dehydrogenation reactor, which adopts the installation system and comprises the following steps:

(1) Laying a track 5: the track 5 is paved in the inner cavity 11 of the cylinder body 1;

in this embodiment, the central guide cone 2 includes a front shell 22 and a rear shell 23, before the track 5 is laid, the end socket of the barrel 1 is vertically placed, then the front shell 22 is lifted in the end socket by a crane, the front shell 22 is concentric with the end socket, then the front shell 22 is mounted on the end socket, a rice-shaped support and a reinforcing rib are arranged in the front shell 22, then the barrel 1 is horizontally placed by the crane, the barrel 1 is positioned on the barrel support assembly 15 and is adjusted to a proper height, then the front end of the track 5 is extended into the barrel 1 and is positioned above the connecting pipe 13, and then the first support assembly 51 is connected with the front end of the track 5, so that the track 5 is laid;

(2) And (3) installing a central diversion cone 2: the central guide cone 2 is hoisted on the first bearing trolley 21 on the track 5, the central guide cone 2 is conveyed into the inner cavity 11 of the cylinder 1 through the first bearing trolley 21, in the embodiment, the central guide cone 2 is conveyed and driven in an auxiliary manner through the driving trolley 56, the central guide cone is positioned in the inner cavity 11, the central guide cone 2 is fixed with the cylinder 1, and the central guide cone 2 and the cylinder 1 can be fixed by bolts and the like;

in this embodiment, the rear cylinder section 23 of the central guide cone 2 is hoisted on the first supporting trolley 21, and after being conveyed to the inner cavity 11 of the cylinder body 1, concentricity of the front cylinder section 22 and the rear cylinder section 23 is required to be adjusted, a supporting point is formed by propping against the rear end of the rear cylinder section 23 through the supporting tube 7, the supporting tube 7 can be fixed on the ground or other objects through a bracket, the center of the supporting tube 7 is preferably propped against the center of the rear end face of the rear cylinder section 23, and finally, the joint of the front cylinder section 22 and the rear cylinder section 23 is subjected to girth welding, and the girth welding can be realized through the girth trolley and the like.

And after welding, testing the sagging amount of the rear end of the central diversion cone 2, judging that the sagging amount is less than 10mm, and temporarily supporting the front end of the central diversion cone 2 through a temporary supporting piece.

(3) Mounting inner net 3: 2 groups of detachable reinforcing rings are arranged in the inner net 3, the inner net 3 is hoisted on a second bearing trolley 31 on the track 5, the inner net 3 is conveyed into the inner cavity 11 of the cylinder 1 through the second bearing trolley 31, and the inner net 3 and the cylinder 1 are fixed;

in this embodiment, set up assembly pulley and chain block in barrel 1, hold intranet 3 through the suspender pocket, use the loop wheel machine to mention the front end of intranet 3, simultaneously at the rear end design hoisting point of intranet 3, use the loop wheel machine to mention the rear end of intranet 3 too, adjust intranet 3 position through the chain block, up and down, control, direction such as rotate, make the installation department of intranet 3 align and fix with the installation department of barrel 1, for example the alignment of bolt and hole, then fix intranet 3 and central water conservancy diversion awl 2 mutually, and support intranet 3 temporarily through temporary support piece in being close to intranet 3 front end department.

In addition, 2 groups of adjustable supporting points are arranged at the positions of the reinforcing rings corresponding to the cylinder body 1 and the inner net 3 and the central diversion cone 2, 8 points are uniformly distributed in each group, and the inner net and the central diversion cone are fixed after concentricity is adjusted.

After the fixation is completed, the sagging amount of the rear end of the inner net 3 needs to be tested, the sagging amount is actually measured to be less than 20mm, and the rigidity requirement during installation is met.

(4) And (3) installing an outer net 4: the outer net 4 is hoisted on a third bearing trolley 41 on the rail 5, the outer net 4 is conveyed into the inner cavity 11 of the cylinder 1 through the third bearing trolley 41, and the outer net 4 is fixed with the cylinder 1.

In this embodiment, the inner side of the outer net 4 and the outer side of the inner net 3 are a wire mesh composed of stainless steel wires, a catalyst is filled in the middle, a positioning trolley 6 is further arranged in front of the third supporting trolley 41, the positioning trolley 6 is arranged on the track 5 in a rolling manner, when the third supporting trolley 41 supporting the outer net 4 moves, the positioning trolley 6 is located at the front end of the outer net 4, the supporting surface of the positioning trolley 6 is in contact with the outer wall of the inner net 3, and the supporting surface of the positioning trolley 6 is made of wear-resistant polytetrafluoroethylene.

After the outer net 4 moves to the inner cavity 11 of the cylinder body 1, the front end and the rear end of the outer net 4 are held by the hanging belt, the front end and the rear end of the outer net 4 are lifted by using the crane, and the position of the outer net 4 is adjusted by the chain block, so that the installation part of the outer net 4 is aligned with the installation part of the cylinder body 1.

After the central diversion cone 2, the inner net 3 and the outer net 4 are installed and fixed, the temporary support rods and the like are removed, and the ellipticity and the concentricity are measured integrally.

The working principle of the installation construction method of the second dehydrogenation reactor provided by the embodiment of the application is as follows: the central diversion cone 2, the inner net 3 and the outer net 4 are sequentially installed from inside to outside, so that the laying times of the track 5 are effectively reduced, and the installation convenience is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (9)

1. A mounting system for a second dehydrogenation reactor, characterized in that the second dehydrogenation reactor comprises a cylinder (1), a central guide cone (2), an inner net (3) and an outer net (4), the cylinder (1) has an inner cavity (11), one end of the cylinder (1) has an opening (12) communicating with the inner cavity (11), the side wall of the cylinder (1) has a connecting tube (13) communicating with the inner cavity (11) of the cylinder (1), the mounting system comprises a rail (5), a first support assembly (51) and a second support assembly (52), the rail (5) is arranged in a horizontal direction, the front end of the rail (5) can extend through the opening (12) to above the connecting tube (13), the first support assembly (51) can extend through the connecting tube (13) to form a support for the rail (5) in the inner cavity (11), the second support assembly (52) is located outside the inner cavity (11) and forms a support for the rail (5), the mounting system further comprises a first support trolley (21) for supporting the central guide cone (2), a second trolley (21) for supporting the inner net (21) and a third trolley (41) for supporting the inner net (21) The second bearing trolley (31) and the third bearing trolley (41) are arranged on the track (5) in a rolling way.

2. The mounting system of a second dehydrogenation reactor according to claim 1 characterized in that the first support assembly (51) comprises a first support plate and a first scissor lift, the upper end of the first support plate being detachably connected to the front end of the rail (5), the lower end of the first support plate being connected to the first scissor lift, the second support assembly (52) comprising a second support plate and a second scissor lift, the upper end of the second support plate being connected to the rail (5), the lower end of the second support plate being connected to the second scissor lift.

3. A mounting system for a second dehydrogenation reactor according to claim 2 characterized in that the mounting system further comprises a barrel support assembly (15) for bearing the barrel (1), the barrel support assembly (15) comprising a barrel support plate and a fourth scissor lift, the upper end of the barrel support plate being connectable to the side wall of the barrel (1), the lower end of the barrel (1) being connected to the fourth scissor lift.

4. A mounting system for a second dehydrogenation reactor according to claim 3 characterized in that the front end of the rail (5) is fixed with a horizontal motor (54), the output end of the horizontal motor (54) is connected with a screw rod (55), a driving trolley (56) is arranged on the rail (5) in a rolling manner, the driving trolley (56) is provided with a nut in screw fit with the screw rod (55), the driving trolley (56) is provided with a first lifting driving source, a second lifting driving source and a third lifting driving source along the moving direction of the driving trolley, the first lifting driving source is provided with a first supporting block (57) for supporting a central guide cone (2), the second lifting driving source is provided with a second supporting block (58) for supporting an inner net (3), and the third lifting driving source is provided with a third supporting block (59) for supporting an outer net (4).

5. A method of installing a second dehydrogenation reactor using the installation system according to any one of claims 1 to 4, comprising the steps of:

(1) Track (5) is laid: the track (5) is paved in an inner cavity (11) of the cylinder body (1);

(2) And installing a central diversion cone (2): the central diversion cone (2) is hoisted on a first bearing trolley (21) on a track (5), the central diversion cone (2) is conveyed into an inner cavity (11) of the cylinder body (1) through the first bearing trolley (21), and the central diversion cone (2) is fixed with the cylinder body (1);

(3) Mounting inner net (3): hoisting the inner net (3) on a second bearing trolley (31) on the track (5), conveying the inner net (3) into an inner cavity (11) of the cylinder (1) through the second bearing trolley (31), and fixing the inner net (3) and the cylinder (1);

(4) And (3) installing an outer net (4): and hoisting the outer net (4) on a third bearing trolley (41) on the track (5), conveying the outer net (4) into the inner cavity (11) of the cylinder (1) through the third bearing trolley (41), and fixing the outer net (4) and the cylinder (1).

6. The method for installing the second dehydrogenation reactor according to claim 5 is characterized in that the central diversion cone (2) comprises a front cylinder section (22) and a rear cylinder section (23), the end socket of the cylinder body (1) is vertically placed before the step (1), then the front cylinder section (22) is hoisted in the end socket by a crane, the front cylinder section (22) is installed on the end socket, a rice-shaped support is arranged in the front cylinder section (22), then the cylinder body (1) is horizontally placed by the crane, and a track (5) is paved; the step (2) further comprises: concentricity of the front cylinder section (22) and the rear cylinder section (23) is adjusted, the rear ends of the front cylinder section (22) and the rear cylinder section (23) are propped against through the supporting pipe (7) to form a supporting point, the joint of the front cylinder section (22) and the rear cylinder section (23) is subjected to girth welding, the sagging amount of the rear end of the central guide cone (2) is tested after welding, the sagging amount is less than 10mm, the rigidity requirement is judged to be met, and the front end of the central guide cone (2) is temporarily supported through a temporary supporting piece.

7. The method for installing a second dehydrogenation reactor according to claim 6, wherein the step (3) further comprises: set up assembly pulley and chain block in barrel (1), hold intranet (3) through the suspender pocket, lift the front end of intranet (3), simultaneously at the rear end design hoisting point of intranet (3), also mention the rear end of intranet (3), adjust intranet (3) position through the chain block, make the installation department of intranet (3) align and fix with the installation department of barrel (1), then fix intranet (3) and central water conservancy diversion awl (2) mutually, and be close to intranet (3) front end department and carry out temporary support to intranet (3) through temporary support piece.

8. The method for installing a second dehydrogenation reactor according to claim 7, wherein the step (4) further comprises: the place ahead of third bearing dolly (41) still has positioning dolly (6), positioning dolly (6) roll and set up on track (5), and when bearing has third bearing dolly (41) of outer net (4) to remove, positioning dolly (6) are located the front end of outer net (4), and the bearing face of positioning dolly (6) contacts with the outer wall of intranet (3), and the bearing face of positioning dolly (6) adopts wear-resisting polytetrafluoroethylene to make.

9. The method for installing a second dehydrogenation reactor according to claim 8, wherein the step (4) further comprises: the front end and the rear end of the outer net (4) are lifted by the sling bag, the position of the outer net (4) is adjusted by the chain block, and the installation part of the outer net (4) is aligned with the installation part of the cylinder body (1).

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