An efficient installation method for cyclone separator in reactor of methanol to olefins plant

Abstract

The present invention provides an efficient installation method for a cyclone separator in a reactor of a methanol to olefins device, comprising: making an auxiliary tool; using a truck crane to place each group of rough rotation, single-stage right-hand rotation and single-stage left-hand rotation on the auxiliary tool and adjusting the horizontality of the separator interface; using the auxiliary tool to fine-tune the interfaces of the rough rotation, single-stage right-hand rotation and single-stage left-hand rotation, and welding after adjusting the horizontality; installing a temporary bracket in the upper cylinder of the reactor, which is used as a temporary bracket platform for the cyclone separator, and marking the axis position of each cyclone separator on the temporary bracket; using a crawler crane to place each group of cyclone separators on the temporary bracket in turn, and the lower part is fixed by angle steel welding. The present invention realizes the pre-assembly and installation of the cyclone separator on the ground in advance by prefabricating a simple and easy-to-use auxiliary tool, which not only expands the construction work surface, but also shortens the high-altitude operation time, improves the installation efficiency and safety, and ensures the safety and quality of the construction.

Description

Technical Field

[0001] The invention belongs to the technical field of construction of methanol to olefins devices, and in particular relates to a high-efficiency installation method of a cyclone separator in a reactor of a methanol to olefins device. Background Art

[0002] The cyclone separation system is the core equipment of the reaction and regeneration system of the methanol to olefins unit. Its separation efficiency directly affects the stable operation of the reaction and regeneration system and the loss of the catalyst. In order to ensure the separation efficiency of the cyclone separator, in addition to ensuring its manufacturing quality, the installation of the equipment is also very critical. The cyclone separator system in the third-generation methanol to olefins reactor is mainly composed of coarse cyclone, single-stage right-handed cyclone, and single-stage left-handed cyclone, with a total of 45 cyclone separators. The traditional installation and construction method of the cyclone separator is to install it in pairs in the reactor cylinder. However, the cyclone separator has large specifications and dimensions. Due to the small construction space in the reactor and the long high-altitude operation time, it brings great safety hazards to the construction, and the construction quality and safety are difficult to guarantee. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an efficient installation method for a cyclone separator in a reactor of a methanol to olefins device, which reduces the time of high-altitude operations, improves installation efficiency and accuracy, and realizes efficient installation of a cyclone separator in a reactor.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] An efficient installation method for a cyclone separator in a reactor of a methanol to olefins device comprises the following steps:

[0006] Step 1: Make auxiliary tooling on site according to the sizes of coarse rotation, single-stage right-hand rotation and single-stage left-hand rotation;

[0007] Step 2: Use a truck crane to place each set of coarse rotation, single-stage right-hand rotation, and single-stage left-hand rotation on the auxiliary tooling, and then use the auxiliary tooling to adjust the height of the cyclone separator interface to ensure that the interfaces are on the same horizontal line;

[0008] Step 3: Continue to use the auxiliary tooling to fine-tune the cyclone separator interface, and weld after the fine-tuning is completed;

[0009] Step 4: Install a triangular temporary bracket in the upper cylinder of the reactor to serve as a temporary bracket platform for the cyclone separator, and mark the axis position of each cyclone separator on the temporary bracket;

[0010] Step 5: Use a crawler crane to place each set of cyclone separators on the temporary support in turn, and fix the lower part with angle steel welding.

[0011] Furthermore, in step 1, the auxiliary tooling includes a saddle and a gantry; the saddle includes a hydraulic lifting rod installed on the lower surface of the base plate, a plurality of webs are vertically installed on the upper surface of the base plate, a plurality of ribs are installed between the webs and the base plate, and an arc-shaped pad for placing the cyclone separator is installed on the top of the ribs and the webs; the gantry is erected above the saddle, and includes a main frame body welded from seamless steel pipes, and a fall chain is installed on the main frame body.

[0012] Furthermore, in step 2, the height of the cyclone separator interface is adjusted using a hydraulic lifting rod of an auxiliary tooling.

[0013] Furthermore, in step 3, the cyclone separator interface is fine-tuned using the fall chain of the auxiliary tooling.

[0014] Furthermore, in step 3, when fine-tuning the interface of the cyclone separator, the error amount of the interface is controlled to be ≤2.5mm and the edge angle is ≤3mm.

[0015] Further, in step 4, the temporary support includes a coarse-rotation temporary support and a single-stage left-rotation and right-rotation temporary support; the coarse-rotation temporary support includes a first channel steel and a first H-shaped steel, one end of two horizontally arranged first H-shaped steels are vertically fixed on the inner wall of the reactor, and the other ends are extended, and the two first channel steels are installed between the two horizontally arranged first H-shaped steels, one end of two obliquely arranged first H-shaped steels are fixed on the inner wall of the reactor, and the other ends are respectively connected to the corresponding horizontally arranged first H-shaped steels directly above them; the single-stage left-rotation and right-rotation temporary support includes a second channel steel and a second H-shaped steel, the arrangement of the second H-shaped steel is the same as the arrangement of the first H-shaped steel in the coarse-rotation temporary support, two second channel steels are installed between the horizontally arranged second H-shaped steels, and a second channel steel is also installed between the upper surface of the horizontally arranged second H-shaped steel and the inner wall of the reactor.

[0016] Furthermore, in step 5, during the placement of the cyclone separators, the center distance deviation of the cyclone separator axes is controlled to be within 2 mm, and the verticality deviation of each cyclone separator is not greater than 5 mm.

[0017] The present invention has the following beneficial effects:

[0018] (1) The present invention can be used to pre-assemble and install the cyclone separator on the ground in advance, which not only expands the construction work surface, but also shortens the high-altitude operation time and improves the installation efficiency and safety;

[0019] (2) The present invention also provides a highly efficient installation auxiliary tooling for a cyclone separator in a reactor of a methanol to olefins plant, which is simple to manufacture, easy to use, and can meet installation requirements.

[0020] (3) The traditional construction method requires the erection of a large number of scaffoldings in the reactor, which has a long construction period and poor economic efficiency. In addition, the hoisting and assembly installation of the cyclone separator in the reactor is limited due to the limited space in the reactor and the large size of the cyclone separator. The available working surface is limited, the high-altitude working time is long, and there are great safety hazards. The present invention, by prefabricating a simple and easy-to-use auxiliary tooling, realizes the pre-assembly and installation of the cyclone separator on the ground in advance, which not only expands the construction working surface, but also shortens the high-altitude working time and improves the installation efficiency and safety. According to calculations, compared with the traditional construction method, the scaffolding erection area is saved by about 2300m 2 , saving about 30 car crane shifts, about 270 man-days of labor, and a total cost savings of about 600,000 yuan. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a layout diagram of the cyclone separator of the present invention;

[0022] Figure 2 It is a plan view of the rough rotation temporary support of the present invention;

[0023] Figure 3 It is a side view of the rough rotating temporary support of the present invention;

[0024] Figure 4 It is a plan view of the single-stage left-hand and right-hand temporary support of the present invention;

[0025] Figure 5 It is a side view of the single-stage left-hand and right-hand temporary support of the present invention;

[0026] Figure 6 This is a schematic diagram of the auxiliary tooling of the present invention.

[0027] In the figure: 1. rough rotation temporary support; 2. single-stage left and right rotation temporary support; 3. first channel steel; 4. first H-shaped steel; 5. second H-shaped steel; 6. second channel steel; 7. saddle; 7a. web; 7b. rib plate; 7c. bottom plate; 7d. pad; 7e. hydraulic lifting rod; 8. gantry; 8a. steel pipe; 8b. fall chain; 9. rough rotation; 10. single-stage right rotation; 11. single-stage left rotation; 12. reactor inner wall. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto. The use of the terms "first", "second", "a", "b", "c", "d", "e" and the like mentioned in the present embodiment is for the convenience of distinguishing the components and cannot be understood as limiting the present invention.

[0029] The efficient installation method of the cyclone separator in the reactor of the methanol to olefins device of the present invention comprises the following steps:

[0030] Step 1: Make auxiliary tooling on site according to the sizes of the coarse cyclone separator (hereinafter referred to as coarse cyclone 9), the inner ring single-stage right cyclone separator (hereinafter referred to as single-stage right cyclone 10), and the outer ring single-stage left cyclone separator (hereinafter referred to as single-stage left cyclone 11);

[0031] like Figure 6 As shown, the auxiliary tooling includes a saddle 7 and a gantry 8; the saddle 7 includes a web 7a, a rib plate 7b, a bottom plate 7c, a pad 7d and a hydraulic lifting rod 7e, the hydraulic lifting rod 7e is installed on the lower surface of the bottom plate 7c, a plurality of webs 7a are vertically installed on the upper surface of the bottom plate 7c, a plurality of ribs 7b are installed between the web 7a and the bottom plate 7c, and an arc pad 7d is installed on the top of the rib plate 7b and the web 7a; the gantry 8 is erected above the saddle 7, and includes a main frame body welded by seamless steel pipes 8a, and a fall chain 8b is installed on the main frame body.

[0032] Step 2: Use a truck crane to place each set of coarse rotation 9, single-stage right rotation 10, and single-stage left rotation 11 on the pad 7d of the auxiliary tooling, and then use the hydraulic lifting rod 7e to adjust the height of the cyclone separator interface to ensure that the interfaces are on the same horizontal line.

[0033] Step 3: Use the inverted chain 8b of the auxiliary tooling to fine-tune the interfaces of the coarse rotation 9, the single-stage right rotation 10, and the single-stage left rotation 11, and control the interface misalignment to be ≤2.5mm and the edge angle to be ≤3mm. After the fine-tuning is completed, weld and assemble.

[0034] Step 4: Reference Figures 2 to 5 As shown, a triangular temporary bracket is installed in the upper cylinder of the reactor to serve as a temporary bracket platform for the cyclone separator, and the axis position of each cyclone separator is marked on the temporary bracket;

[0035] The temporary support includes a rough rotation temporary support 1 and a single-stage left-hand and right-hand temporary support 2; the rough rotation temporary support 1 includes a 14a first channel steel 3 and a 200×200mm first H-shaped steel 4, one end of two horizontally arranged first H-shaped steels 4 are vertically fixed on the inner wall 12 of the reactor, and the other ends are extended, the two first channel steels 3 are installed between the two horizontally arranged first H-shaped steels 4, one end of two obliquely arranged first H-shaped steels 4 are fixed on the inner wall 12 of the reactor, and the other ends are respectively connected to the horizontally arranged first H-shaped steels 4 corresponding to the upper part thereof; the single-stage left-hand and right-hand temporary support 2 includes a 16a second channel steel 6 and a 350×250mm second H-shaped steel 5, the arrangement of the second H-shaped steel 5 is the same as the arrangement of the first H-shaped steel 4 in the rough rotation temporary support 1, two second channel steels 6 are installed between the horizontally arranged second H-shaped steels 5, and a second channel steel 6 is also installed between the upper surface of the horizontally arranged second H-shaped steel 5 and the inner wall 12 of the reactor.

[0036] Step 5: Use a crawler crane to place each set of cyclone separators on a temporary support in turn. During the placement process, control the deviation of the cyclone separator axis center distance within 2mm, and ensure that the verticality deviation of each cyclone separator is no more than 5mm. After passing the test, the lower part of each cyclone separator is fixed by angle steel welding; the layout of the installed cyclone separator is as follows: Figure 1 shown.

[0037] The embodiments are preferred implementations of the present invention, but the present invention is not limited to the above-mentioned implementations. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essential content of the present invention belong to the protection scope of the present invention.

Claims

1. An efficient installation method for a cyclone separator in a reactor of a methanol to olefins plant, characterized in that: The process includes the following: Step 1: Making auxiliary tooling on site according to the sizes of the rough rotation (9), the single-stage right-hand rotation (10) and the single-stage left-hand rotation (11); Step 2: Use a truck crane to place each set of coarse rotation (9), single-stage right-hand rotation (10), and single-stage left-hand rotation (11) on the auxiliary tooling, and then use the auxiliary tooling to adjust the height of the cyclone separator interface to ensure that the interfaces are on the same horizontal line; Step 3: Continue to use the auxiliary tooling to fine-tune the cyclone separator interface, and weld after the fine-tuning is completed; Step 4: Install a triangular temporary bracket in the upper cylinder of the reactor to serve as a temporary bracket platform for the cyclone separator, and mark the axis position of each cyclone separator on the temporary bracket; Step 5: Use a crawler crane to place each set of cyclone separators on the temporary support in turn, and fix the lower part with angle steel welding; In the step 1, the auxiliary tooling includes a saddle (7) and a gantry (8); the saddle (7) includes a hydraulic lifting rod (7e) installed on the lower surface of a base plate (7c); a plurality of webs (7a) are vertically installed on the upper surface of the base plate (7c); a plurality of ribs (7b) are installed between the webs (7a) and the base plate (7c); an arc-shaped pad (7d) for placing a cyclone separator is installed on the ribs (7b) and the top of the webs (7a); the gantry (8) is erected above the saddle (7), and includes a main frame body welded from seamless steel pipes (8a); a fall chain (8b) is installed on the main frame body; In step 2, the height of the cyclone separator interface is adjusted using a hydraulic lifting rod (7e) of an auxiliary tooling; In the step 3, the cyclone separator interface is fine-tuned using the fall chain (8b) of the auxiliary tooling; In the step 4, the temporary support comprises a rough rotation temporary support (1) and a single-stage left-hand and right-hand rotation temporary support (2); the rough rotation temporary support (1) comprises a first channel steel (3) and a first H-shaped steel (4); one end of two horizontally arranged first H-shaped steels (4) are both vertically fixed on the inner wall (12) of the reactor and the other ends are both extended; the two first channel steels (3) are installed between the two horizontally arranged first H-shaped steels (4); one end of two obliquely arranged first H-shaped steels (4) are both fixed on the inner wall (12) of the reactor , and the other end is respectively connected to the first H-shaped steel (4) arranged horizontally above it; the single-stage left-hand and right-hand temporary support (2) comprises a second channel steel (6) and a second H-shaped steel (5); the arrangement of the second H-shaped steel (5) is the same as the arrangement of the first H-shaped steel (4) in the rough rotation temporary support (1); two second channel steels (6) are installed between the horizontally arranged second H-shaped steels (5), and a second channel steel (6) is also installed between the upper surface of the horizontally arranged second H-shaped steel (5) and the inner wall (12) of the reactor.

2. The efficient installation method of a cyclone separator in a reactor of a methanol to olefins plant according to claim 1, characterized in that: In step 3, when fine-tuning the interface of the cyclone separator, the error amount of the interface is controlled to be ≤2.5mm and the edge angle is ≤3mm.

3. The efficient installation method of a cyclone separator in a reactor of a methanol to olefins plant according to claim 1, characterized in that: In step 5, during the placement of the cyclone separators, the center distance deviation of the cyclone separator axes is controlled to be within 2 mm, and the verticality deviation of each cyclone separator is not greater than 5 mm.

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