Wet desulfurization and demisting integrated device construction method

Abstract

The invention relates to the technical field of environmental protection equipment, and discloses a construction method of a wet desulphurization and demisting integrated device, which comprises the following steps: mounting a shell step by step from bottom to top, and reserving a weld joint on the outer layer for welding; an all-round scaffold is built in the shell, and the height of the scaffold corresponds to the height of the shell; the inner wall of the shell is welded, and a demisting layer, a desulfurization layer, a mixing layer supporting cross beam and a sealing plate are installed; the scaffold from the top of the shell to the demisting layer is detached, and a demisting function module is installed on the demisting layer; a scaffold of the desulfurization layer is dismounted, and desulfurization function modules are installed on the desulfurization layer; and the scaffold of the mixing layer is dismounted, and the mixing function module is installed on the mixing layer. According to the method for installing the functional modules from top to bottom through the scaffold, welding of the inner wall of the shell and installation of the functional modules in the shell can be met, the utilization rate of temporary facilities is effectively increased, the use frequency of hoisting machinery is reduced, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection equipment, and in particular to a construction method of a wet desulfurization and demisting integrated device. Background Art

[0002] With the development of industry, the consequences of air pollution are becoming more and more serious, which has caused serious impacts on the ecological environment. The gases discharged from boilers, kilns, etc. need to be desulfurized, dusted, and defogged. In order to minimize environmental pollution, a wet desulfurization and defogging integrated device is generally used to filter the gases discharged from boilers, kilns, etc. The construction volume of the wet desulfurization and defogging integrated device is large. During the construction process, the construction period is long, involving high-altitude operations, and the risks of operators are also relatively large. In the prior art, the construction of the wet desulfurization and defogging integrated device is generally to build the shell from bottom to top step by step, build a construction platform for external welding of the shell, and then build a construction platform inside the shell to weld the inner wall weld of the shell. After the inner wall welding is completed, the welding platform is removed and the installation of the internal functional module begins. The installation of the internal functional module generally adopts the hoisting method, step by step, first install the mixer function module at the bottom layer, then install the desulfurization layer module at the middle layer, and finally install the defogging function module. This method has low utilization rate of temporary facilities, high frequency of use of hoisting machinery, slow construction process, and high labor cost. Summary of the invention

[0003] The purpose of the present invention is to provide a construction method for a wet flue gas desulfurization and mist removal integrated device, so as to improve the utilization rate of temporary facilities, reduce the frequency of use of hoisting machinery, and improve construction efficiency.

[0004] In order to solve the above technical problems, the embodiments of the present invention provide a technical solution as follows:

[0005] A construction method for an integrated wet desulfurization and demisting device, wherein the integrated wet desulfurization device comprises a vertically arranged shell, wherein a demisting layer, a desulfurization layer, and a mixing layer are arranged inside the shell from top to bottom, and the construction method for the integrated wet desulfurization device comprises the following steps:

[0006] Install the shell from bottom to top step by step, and weld the reserved welds on the outer layer;

[0007] Building a full-height scaffolding inside the shell, wherein the height of the scaffolding corresponds to the height of the shell;

[0008] Weld the inner wall of the shell and install the demisting layer, desulfurization layer, mixing layer support beams and sealing plates;

[0009] Remove the scaffolding from the top of the shell to the demisting layer, and install the demisting function module on the demisting layer;

[0010] Remove the scaffolding of the desulfurization layer and install the desulfurization function module in the desulfurization layer;

[0011] Remove the scaffolding of the mixed layer and install the mixed functional modules in the mixed layer.

[0012] Furthermore, welding the reserved weld of the outer layer includes building a temporary construction platform on the outer layer of the shell, and welding the outer layer of the shell with the help of the construction platform.

[0013] Furthermore, the shell and the supporting beam are provided with mounting holes correspondingly, and the mounting holes are arranged to pass through the shell transversely.

[0014] Furthermore, an escape space is provided at a position corresponding to the mounting hole of the scaffolding, and the escape space is used to support the hoisting and installation of the beam.

[0015] Furthermore, the scaffold is provided with an operating space of 200 to 300 mm from the inner wall of the shell to facilitate the installation of the sealing plate.

[0016] Furthermore, the scaffolding is used as a construction platform for welding the inner wall of the shell and installing the demisting layer, the desulfurization layer, the mixing layer support beams and the sealing plate.

[0017] Furthermore, the sealing plate is installed in a ring shape on the inner wall of the shell, one end of the sealing plate is fixedly connected to the supporting crossbeam, and the sealing plate is trumpet-shaped as a whole, and the trumpet-shaped opening with a larger diameter is arranged toward the bottom of the shell.

[0018] Furthermore, the side wall of the shell is provided with a manhole, and the components of the defogger function module, the desulfurization function module and the mixing function module are hoisted into the shell through the manhole or the top of the shell.

[0019] Furthermore, the shell has a double-layer structure, and the inner layer of the shell is made of stainless steel.

[0020] Furthermore, the supporting beam is square steel.

[0021] Compared with the prior art, the construction method of a wet flue gas desulfurization and demisting integrated device provided by the present invention can not only meet the welding requirements of the inner wall of the shell by erecting a full-floor scaffolding inside the shell, but also effectively improve the utilization rate of the scaffolding by installing the demisting function module, the desulfurization function module and the mixing function module in sequence from top to bottom. The method of dismantling one layer of scaffolding and installing one function module is beneficial to improving the installation efficiency of internal components, improving the utilization rate of temporary facilities, reducing the frequency of use of lifting machinery, improving construction efficiency, and helping to reduce construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 It is a flow chart of a construction method of an integrated wet desulfurization and demisting device in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the following will be described in detail with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that in the various embodiments of the present invention, many technical details are provided in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed for protection in the claims of the present application can be implemented.

[0025] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0026] The integrated wet desulfurization device includes a vertically arranged shell, and a demisting layer, a desulfurization layer, and a mixing layer are arranged inside the shell from top to bottom. The demisting layer is correspondingly provided with a demisting functional module, the desulfurization layer is correspondingly provided with a desulfurization functional module, and the mixing layer is correspondingly provided with a mixing functional module. A manhole and an installation hole are provided on the shell. The manhole is a channel penetrating the side wall of the shell for maintenance workers to pass through. The installation hole corresponds to the supporting beam inside the shell and is used for the installation of the supporting beam.

[0027] like Figure 1 The embodiment of the present invention relates to a construction method of a wet flue gas desulfurization and mist removal integrated device, comprising the following steps:

[0028] First, the shell is installed step by step from bottom to top, and the reserved welds on the outer layer are welded; using tower crane equipment, each section of the shell is lifted to the construction site and installed step by step. When welding the outer layer of the shell, a temporary construction platform needs to be built. The temporary construction platform is a platform bracket arranged around the outside of the shell. The operators use the platform bracket to weld the welds on the outer layer of the shell.

[0029] Secondly, a full-floor scaffolding is built inside the shell, and the height of the scaffolding corresponds to the height of the shell; the scaffolding is a temporary facility, and to facilitate the installation of the internal sealing plate of the shell, an operating space of 200mm to 300mm is provided between the scaffolding and the inside of the shell, and to facilitate the installation of the supporting beam, an avoidance space is provided between the scaffolding and the installation hole.

[0030] Then, the inner wall of the shell is welded and the supporting beams and sealing plates of the demisting layer, desulfurization layer and mixing layer are installed; the operators use the scaffolding and operating space to weld the inner wall of the shell and install the sealing plates, and use the avoidance space to complete the lifting and installation of the supporting beams. Preferably, the supporting beams are square steels, and the sealing plate rings are arranged on the inner wall of the shell, and one end of the sealing plate is fixedly connected to the supporting beams. The sealing plate is trumpet-shaped as a whole, and the larger diameter opening of the trumpet-shaped plate faces the bottom of the shell. The setting of the trumpet-shaped sealing plate is conducive to the gathering of gas, and guides the gas to the top of the shell for discharge.

[0031] After the support beam and the sealing plate are installed, the scaffolding from the top of the shell to the demisting layer is removed, and the demisting function module is installed in the demisting layer; the demisting function module is the existing technology, including a demister, a smoke outlet and other components. The components of the demisting function module can be lifted to the inside of the shell through the top of the shell or the side manhole, and the staff uses the scaffolding to complete the installation of the demisting function module.

[0032] After the installation of the demisting function module is completed, the scaffolding of the desulfurization layer is removed, and the desulfurization function module is installed in the desulfurization layer; the desulfurization function module is a prior art, including components such as a multi-stage spray device, and the components of the desulfurization function module can be lifted to the inside of the shell through the top or side manhole of the shell, and the staff uses the scaffolding to complete the installation of the desulfurization function module.

[0033] After the installation of the desulfurization function module is completed, the scaffolding of the mixing layer is removed and the mixing function module is installed in the mixing layer; the mixing function module is a prior art, including components such as a slurry tank, and the components of the mixing function module can be lifted to the inside of the shell through the top or side manhole of the shell, and the staff uses the scaffolding to complete the installation of the mixing function module.

[0034] In one embodiment, the shell is provided with mounting holes corresponding to the supporting beams, and the mounting holes are arranged transversely through the shell. The central axes of the two mounting holes corresponding to each supporting beam are the same. When the scaffolding is erected to the opening position, space is reserved for hoisting and installing the square steel supports according to the positions of the holes, so as to avoid interference with the scaffolding when the square steel supports are hoisted and installed, thereby affecting the safety of the scaffolding and the construction progress.

[0035] In one embodiment, the shell is a composite layer structure, and the inner layer of the shell is made of stainless steel. Preferably, the shell is a double-layer structure, and the thickness of the outer layer of the shell is greater than the thickness of the inner layer of the shell.

[0036] The construction method of a wet flue gas desulfurization and demisting integrated device provided by the present invention can not only meet the welding requirements of the inner wall of the shell by setting up a full-floor scaffolding inside the shell, but also effectively improve the utilization rate of the scaffolding by installing the demisting function module, the desulfurization function module and the mixing function module in sequence from top to bottom. The method of dismantling one layer of scaffolding and installing one function module is beneficial to improving the installation efficiency of internal components, improving the utilization rate of temporary facilities, reducing the frequency of use of lifting machinery, improving construction efficiency, and helping to reduce construction costs.

[0037] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. A construction method for a wet flue gas desulfurization and demisting integrated device, characterized in that: The integrated wet desulfurization device comprises a vertically arranged shell, wherein a demisting layer, a desulfurization layer and a mixing layer are arranged inside the shell from top to bottom. The construction method of the integrated wet desulfurization device comprises the following steps: Install the shell from bottom to top step by step, and weld the reserved welds on the outer layer; Building a full-height scaffolding inside the shell, wherein the height of the scaffolding corresponds to the height of the shell; Weld the inner wall of the shell and install the demisting layer, desulfurization layer, mixing layer support beams and sealing plates; Remove the scaffolding from the top of the shell to the demisting layer, and install the demisting function module on the demisting layer; Remove the scaffolding of the desulfurization layer and install the desulfurization function module in the desulfurization layer; Remove the scaffolding of the mixed layer and install the mixed functional modules in the mixed layer.

2. The construction method of a wet desulfurization and demisting integrated device according to claim 1, characterized in that: The welding of the reserved weld seam of the outer layer includes building a temporary construction platform on the outer layer of the shell, and welding the outer layer of the shell with the help of the construction platform.

3. The construction method of a wet desulfurization and demisting integrated device according to claim 1, characterized in that: The shell and the supporting beam are provided with mounting holes correspondingly, and the mounting holes are arranged to pass through the shell horizontally.

4. The construction method of a wet desulfurization and demisting integrated device according to claim 3, characterized in that: An escape space is provided at a position of the scaffold corresponding to the installation hole, and the escape space is used for supporting the hoisting and installation of the crossbeam.

5. The construction method of a wet desulfurization and demisting integrated device according to claim 4, characterized in that: The scaffold is provided with an operating space of 200 to 300 mm from the inner wall of the shell to facilitate the installation of the sealing plate.

6. A construction method for a wet flue gas desulfurization and demisting integrated device according to claim 5, characterized in that: The scaffolding is used as a construction platform for welding the inner wall of the shell and installing the demisting layer, the desulfurization layer, the mixing layer support beams and the sealing plate.

7. The construction method of a wet flue gas desulfurization and demisting integrated device according to claim 1, characterized in that: The sealing plate is installed in an annular shape on the inner wall of the shell, one end of the sealing plate is fixedly connected to the supporting crossbeam, and the sealing plate is trumpet-shaped as a whole, and the trumpet-shaped opening with a larger diameter is arranged toward the bottom of the shell.

8. The construction method of a wet desulfurization and demisting integrated device according to claim 1, characterized in that: The side wall of the shell is provided with a manhole, and the components of the defogger function module, the desulfurization function module and the mixing function module are hoisted into the shell through the manhole or the top of the shell.

9. The construction method of a wet flue gas desulfurization and demisting integrated device according to claim 1, characterized in that: The shell is a double-layer structure, and the inner layer of the shell is made of stainless steel.

10. A construction method for a wet flue gas desulfurization and demisting integrated device according to any one of claims 1 to 9, characterized in that: The supporting cross beam is square steel.

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