Modularized installation and construction method for stock bin of flue gas desulfurization tower

Abstract

The invention discloses a modular installation construction method of a flue gas desulfurization tower stock bin, which comprises the steps of stock bin module division, module manufacturing, modular installation and the like, and the stock bin is divided into three sections along the longitudinal direction by the module division; the first section module is the lower part of the bin body above the bottom ash bucket, the second section module is the upper part of the bin body, and the third section module is a hoisting beam and rainproof shed structure at the top of the bin body; the first section module and the second section module are divided according to the structural difference of basic components of the upper and lower bin bodies; each section of module is divided into a plurality of sub-modules with the same height, the first sub-module is square, and the other two sub-modules are C-shaped. According to the modular design method, the modular design is carried out on the large-scale heating furnace desulfurization tower stock bin according to a certain principle by comprehensively considering multiple aspects of module processing cost, module structure stability, installation convenience and the like, so that the engineering of modular installation of the large-scale stock bin is feasible.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment construction, and more specifically, to a modular installation and construction method for a flue gas desulfurization tower silo. Background Art

[0002] In order to meet the ultra-low emission requirements, steel companies add desulfurization equipment to the flue gas of the heating furnace in the later process to reduce the content of sulfides in the flue gas. At present, the flue gas emissions of the heating furnace mostly use tower desulfurization silos, referred to as desulfurization towers. The usual practice for the desulfurization tower structure is to use a crane to lift the monolithic structural unit to the installation location, and personnel perform a lot of docking and welding work at height. This method consumes a large number of machine shifts, a large number of personnel working at heights, low installation efficiency, high installation costs, and high safety risks. Modular installation uses modules manufactured by the processing plant to be transported to the site for immediate lifting and installation, which can greatly reduce the crane shift fee and is conducive to the simultaneous production and installation of the processing plant. However, there is currently no modular installation and construction technology suitable for flue gas desulfurization tower silos that has been made public.

[0003] Therefore, developing a modular installation and construction method for a flue gas desulfurization tower silo is a technical problem that needs to be solved urgently. Summary of the invention

[0004] In view of the above-mentioned defects in the prior art, the present invention provides a modular installation and construction method for a flue gas desulfurization tower silo, which aims to shorten the construction period, reduce a large amount of high-altitude operations, reduce crane shifts, and improve installation efficiency and safety through appropriate module division.

[0005] To achieve the above object, the present invention provides a modular installation and construction method for a flue gas desulfurization tower silo, which is characterized by comprising the following steps:

[0006] S1. Module division of the silo: First, the silo is divided into three sections along the longitudinal direction; the first section module is the lower part of the silo above the bottom ash hopper, the second section module is the upper part of the silo, and the third section module is the hoisting beam and rainproof canopy structure on the top of the silo; the division of the first section module and the second section module is based on the difference in the basic component structure of the upper and lower parts of the silo; secondly, each section module is divided into several sub-modules with the same height, of which the first sub-module is square and the other two sub-modules are C-shaped;

[0007] S2. Module production of silo: each module is produced in the processing plant according to the detailed drawings of the divided modules;

[0008] S3. Modular installation of silos: After the modules arrive at the site, the corresponding module units are hoisted to the installation positions according to the installation numbers. The first section modules are located on the concrete foundation, the second section modules are located on the first section modules, and the third section modules are located on the second section modules.

[0009] The construction method first divides the desulfurization tower structure into modules, then manufactures them in modular form in a processing plant, transports them to the installation site, and uses a truck crane for installation. This can greatly reduce the number of workers performing splicing and welding operations at high places, thereby improving work efficiency.

[0010] Furthermore, in step S1, each module section is divided into sub-modules with the same length, width and height, which makes it easier to carry out the lifting work.

[0011] Furthermore, in the step S1, the submodule lengths and submodule widths of the first section module and the second section module are respectively consistent, so that the modules can be stably stacked and easily connected during installation.

[0012] Furthermore, in step S2, temporary support is added to the non-pillar side of the C-shaped submodule to enhance the rigidity of the C-shaped module.

[0013] Furthermore, in step S3, when installing the submodules of each section of the module, the square box module is installed first, and the remaining C-shaped submodules are installed in sequence close to the first submodule.

[0014] Furthermore, the temporary support of the C-shaped submodule is removed before installation.

[0015] Compared with the prior art, the above invention has the following advantages or beneficial effects:

[0016] (1) The present invention takes into account multiple aspects such as module processing cost, module structural stability, and installation convenience, and modularizes the large-scale heating furnace desulfurization tower silo according to innovative principles to make the modular installation of large-scale silos feasible.

[0017] (2) The present invention processes and manufactures modules in a processing plant, thereby improving work efficiency and greatly reducing the safety risks of construction workers working at heights. At the same time, it greatly reduces the number of crane shifts and does not occupy installation space. The modules manufactured in the processing plant are transported to the site and can be hoisted and installed immediately, thereby greatly reducing the number of crane shifts and facilitating the simultaneous production and installation of the processing plant. It is significantly higher than the existing technical solutions in terms of cost and installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention and its features, appearance and advantages will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings. The same reference numerals indicate the same parts in all the drawings. The drawings are not drawn to scale, and emphasis is placed on illustrating the subject matter of the present invention.

[0019] Figure 1 A flowchart of modular installation and construction of a flue gas desulfurization tower silo according to an embodiment of the present invention;

[0020] Figure 2 It is a front and side view of the modular division of the flue gas desulfurization tower silo according to one embodiment of the present invention;

[0021] Figure 3 A top view showing the division of the first and second stage desulfurization tower silo modules according to an embodiment of the present invention;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a square submodule manufactured according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of module hoisting according to an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The following is a further description of the structure of the present invention in conjunction with the accompanying drawings and specific embodiments, but it is not intended to limit the present invention. The execution order of actions, steps, etc. in the devices and methods shown in the claims, specifications and drawings of the present invention can be implemented in any order as long as there is no special explicit limitation on the order and the output of the previous processing is not used in the subsequent processing.

[0025] It should also be noted that in the description of this application, the terms "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] The technical solution of the present invention is described in detail below with specific embodiments and examples.

[0027] Example

[0028] See also Figure 1 This embodiment relates to a modular installation and construction method for a flue gas desulfurization tower silo, comprising the following steps:

[0029] S1. Module division of the silo: First, the silo is divided into three sections along the longitudinal direction; the first section module is the lower part of the silo above the bottom ash hopper, the second section module is the upper part of the silo, and the third section module is the lifting beam and rainproof canopy structure on the top of the silo; the division of the first section module and the second section module is based on the difference in the basic component structure of the upper and lower parts of the silo; secondly, each section module is divided into several sub-modules with the same height, among which the first sub-module is square and the other two sub-modules are C-shaped.

[0030] As a more specific example, in step S1, the desulfurization tower silo body drawing is modularly designed and divided according to the structural design of the heating furnace flue gas desulfurization tower and the on-site installation conditions and transportation conditions. Figure 2The upper and lower parts of the silo are made of 16mm and 12mm thick square steel respectively. The difference in the foundation components dominates the division of the first and second modules. The desulfurization tower silo is divided into three modules. Figure 2 and Figure 3 , the first section is from the ash hopper to +14.6 meters, which is divided into three modules, each module is 10.8 meters high, 4.65 meters long and 5.45 meters wide. The second section of the warehouse is from +14.6 meters to 26.1 meters, which is also divided into 3 modules, each module is 11.5 meters high, 4.65 meters long and 5.45 meters wide. The third section is the top hoisting beam and rainproof canopy structure. Each section of the module is divided into sub-modules with the same length, width and height, which is more convenient for hoisting work. The sub-module length and sub-module width of the first section module and the second section module are respectively consistent, so that the modules are stable and easy to stack and connect during installation.

[0031] S2. Module production of silos: Each module is produced in the processing plant according to the detailed drawings of the divided modules. In order to reduce the amount of high-altitude work, reduce the difficulty of sub-structure installation, and ensure the quality of sub-structure installation, more specifically, the modular structure of the three-stage desulfurization tower silo is produced in the processing plant according to the detailed drawings. The first module of the first and second sections ( Figure 1 The first and fourth blocks are made into squares, and the two adjacent modules are made into C shapes ( Figure 1 2, 3, 5, 6) so that three modules per segment can be installed. Figure 4 The desulfurization tower silo module is relatively large overall. When the C-type module is manufactured, the structure of the side without columns is relatively thin. Temporary support is added during manufacturing to enhance the rigidity. The temporary support can be a steel plate or an I-beam, which is set at the position of the column to support the structure of the side without columns and prevent the module from deformation.

[0032] S3. Modular installation of silos: After the modules arrive at the site, the corresponding module units are hoisted to the installation positions according to the installation numbers. The first section module is located on the concrete foundation, the second section module is located on the first section module, and the third section module is located on the second section module. Each section module is assembled on the ground. The square box submodule is installed first, and the remaining C-shaped submodules are installed close to the first submodule in sequence. The temporary support of the C-shaped submodule is removed before assembly. Calculate the weight of each section module, select a crane of appropriate tonnage for hoisting, and pay attention to wind force during hoisting operations. For more details, see Figure 5 First, two truck cranes are used to erect the module vertically, with the main crane lifting the top and the auxiliary truck crane lifting the tail. In this embodiment, the truck crane is only needed to lift the module, and the truck crane is not required to be on site for a long time, which can reduce at least 25 shifts of the truck crane.

[0033] The present invention takes into comprehensive consideration multiple aspects such as module processing cost, module structural stability, and installation convenience, and modularizes the large-scale heating furnace desulfurization tower silo according to innovative principles to make the modular installation of the large-scale silo feasible.

[0034] From the above description, it can be seen that the present invention greatly shortens the construction period of the silo through appropriate module division, reduces a large amount of high-altitude operations, reduces crane shifts, and improves installation efficiency and safety.

[0035] In summary, the present invention provides a modular installation and construction method for a flue gas desulfurization tower silo, including steps such as module division of the silo, module production and modular installation, wherein the module division divides the silo into three sections in the longitudinal direction; the first section module is the lower part of the silo body above the bottom ash hopper, the second section module is the upper part of the silo body, and the third section module is the hoisting beam and rainproof canopy structure at the top of the silo body; the division of the first section module and the second section module is based on the structural differences of the basic components of the upper and lower parts of the silo body; each section module is divided into a number of highly consistent sub-modules, wherein the first sub-module is square and the other two sub-modules are C-shaped. The present invention comprehensively considers multiple aspects such as module processing cost, module structural stability, and installation convenience, and modularly designs the silo of a large heating furnace desulfurization tower according to certain principles to make the modular installation of large silos feasible.

[0036] Those skilled in the art should understand that those skilled in the art can implement variations by combining the prior art and the above embodiments, which will not be described in detail here. Such variations do not affect the essential content of the present invention, and will not be described in detail here.

[0037] The above describes the preferred embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and the devices and structures that are not described in detail should be understood to be implemented in a common manner in the art; any technician familiar with the art can use the above-disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the scope of the technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes, which does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention are still within the scope of protection of the technical solutions of the present invention.

Claims

1. A modular installation and construction method for a flue gas desulfurization tower silo, It is characterized in that The following steps are involved: S1. Module division of the silo: First, the silo is divided into three sections along the longitudinal direction; the first section module is the lower part of the silo above the bottom ash hopper, the second section module is the upper part of the silo, and the third section module is the hoisting beam and rainproof canopy structure on the top of the silo; the division of the first section module and the second section module is based on the difference in the basic component structure of the upper and lower parts of the silo; secondly, each section module is divided into several sub-modules with the same height, of which the first sub-module is square and the other two sub-modules are C-shaped; S2. Module production of silo: each module is produced in the processing plant according to the detailed drawings of the divided modules; S3. Modular installation of silos: After the modules arrive at the site, the corresponding module units are hoisted to the installation positions according to the installation numbers. The first section modules are located on the concrete foundation, the second section modules are located on the first section modules, and the third section modules are located on the second section modules.

2. A modular installation and construction method for a flue gas desulfurization tower silo according to claim 1, It is characterized in that In step S1, each module segment is divided into submodules with the same length, width and height.

3. A modular installation and construction method for a flue gas desulfurization tower silo according to claim 2, It is characterized in that In the step S1, the submodule lengths and submodule widths of the first section module and the second section module are respectively consistent.

4. A modular installation and construction method for a flue gas desulfurization tower silo according to claim 1, It is characterized in that In step S2, temporary support is added to the side of the C-shaped submodule without columns.

5. A modular installation and construction method for a flue gas desulfurization tower silo according to claim 1, It is characterized in that In step S3, when installing the submodules of each module segment, the square box module is installed first, and the remaining C-shaped submodules are installed in sequence close to the first submodule.

6. A modular installation and construction method for a flue gas desulfurization tower silo according to claim 5, It is characterized in that The temporary support is removed before installing the C-shaped submodule.

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