Billet flame cleaning wet type electric dust removal device and mounting method

Abstract

The invention belongs to the technical field of metallurgical equipment installation, and particularly discloses a steel billet flame cleaning wet-type electric dust removal device and an installation method.The steel billet flame cleaning wet-type electric dust removal device comprises a body frame, a drainage component is fixedly installed in the body frame, an ash bucket is fixedly installed at the top of the drainage component, and a water supply pipeline is fixedly installed at the top of the ash bucket; the water supply pipeline is fixedly installed at the bottom of the shell, the two ends of the shell are fixedly connected with the outlet horn and the inlet horn respectively, the regular flushing component and the water film spraying component are fixedly installed in the shell, and the water film spraying component is arranged at the bottom of the regular flushing component. The step-by-step combined hoisting and cross operation mode is adopted, procedures are reasonably planned, the procedure waiting time is shortened, the construction space and time are fully utilized, and the construction period can be effectively shortened; meanwhile, by optimizing the construction process, the exposure time and the rework probability of equipment are reduced, the anti-corrosion treatment cost and the material loss are reduced, and effective control over the comprehensive cost is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of metallurgical equipment installation, and particularly relates to a steel billet flame cleaning wet-type electric dust removal device and an installation method. BACKGROUND

[0002] The wet-type electric dust removal device is a dust removal device used for treating trace dust and micro-particles, is mainly used for treating high-humidity and high-corrosive flue gas, can efficiently remove fine particulate matter (PM2.5), acid mist, heavy metals and aerosol and other pollutants, and is a key equipment for industrial flue gas deep purification.

[0003] The existing steel billet flame cleaning wet-type electric dust removal device installation technology has obvious limitations. The traditional integral hoisting technology hoists the system as a whole by means of large hoisting equipment, although the on-site splicing is reduced, a hundred-ton or more crawler crane or automobile crane needs to be provided, the equipment rental and transportation cost is high, the space requirement for the site is strict, the construction site which is narrow or has obstacles is difficult to implement, and the post-positioned corrosion easily leads to the corrosion of the equipment interior and the weld. The sequential installation technology sequentially completes the installation of each component according to a fixed process, the process is clear, but is highly dependent on the process, once a certain link is delayed, the overall construction period will be extended, the equipment is exposed for a long time, the corrosion difficulty and cost increase, and the space and time utilization rate is low. The simple segmented installation technology simply segments and hoists and splices, is not planned from the system level, the segmentation is mostly outside the structure, which leads to insufficient installation space of the internal precision components, the precision is affected, and then the dust removal efficiency is reduced. Most of the existing technologies lack cross-operation management, the installation and corrosion are separated, not only the construction period is extended, but also the safety hidden danger and management difficulty are increased due to the personnel interference, material transportation channel blockage and other problems, and in view of the above problems, how to design the steel billet flame cleaning wet-type electric dust removal device and the installation method becomes a problem to be solved at present. SUMMARY

[0004] The application aims to solve the problems in the prior art and provides a steel billet flame cleaning wet-type electric dust removal device and an installation method.

[0005] To achieve the above object, the application provides a steel billet flame cleaning wet-type electric dust removal device and an installation method, which comprises a body frame, a drainage component is fixedly installed in the body frame, an ash bucket is fixedly installed at the top of the drainage component, a water supply pipeline is fixedly installed at the top of the ash bucket, the water supply pipeline is fixedly installed at the bottom of a shell, an outlet horn and an inlet horn are fixedly connected at both ends of the shell respectively, a regular flushing component and a water film spraying component are fixedly installed in the shell, and the water film spraying component is arranged at the bottom of the regular flushing component.

[0006] In the above technical scheme, further, the inside of the shell is sequentially installed with an anode component and a cathode assembly from bottom to top, the cathode assembly comprises a cathode component and a cathode hanger, the inside of the inlet horn is fixedly installed with an inlet spraying component, the top of the shell is fixedly installed with a hot air component, a first insulation protection pipe, a second insulation protection pipe and a high-voltage power supply system, and the side wall of the shell is fixedly installed with a corridor platform.

[0007] A mounting method of a steel billet flame cleaning wet-type electric dust removal device, the wet-type electric dust removal device is divided into multiple parts, and the mounting is performed in the following order by using a step-by-step combined hoisting and mounting method of anticorrosion cross operation: shell, insulation and heat preservation cylinder installation, anticorrosion construction, anode module installation, cathode wire installation and inlet spraying component installation.

[0008] In the above technical scheme, further, the shell installation adopts ground combined installation, and the hopper, water supply pipeline, outlet horn, inlet horn and truss are combined and installed from bottom to top, and after the combined installation is completed, welding and polishing are performed, the shell after the combined installation is hoisted by using a 25T automobile crane, after the hoisting is completed, the outlet horn is connected with the desulfurization absorption tower through a non-metal expansion joint, the inside of the shell is installed with an anode module, a cathode wire, a regular flushing component and a water film spraying component, and the anode module is divided into four electric fields by a PP plate.

[0009] In the above technical scheme, further, the insulation and heat preservation cylinder installation adopts 25T automobile crane single-piece hoisting to the inside of the shell, and after the installation, the inside connecting flange joint surface is sealed by FRP.

[0010] In the above technical scheme, further, the anticorrosion construction sequentially performs the following procedures: shell inspection, base body sand blasting treatment, primer brushing, mortar smearing, local FRP reinforcement, quality detection and repair acceptance, finish paint brushing and overall acceptance.

[0011] In the above technical scheme, further, the anticorrosion construction process adopts a segmented and sliced manner and a day-and-night cross operation mode with the installation, ground anticorrosion welding reserved positions are welded and locally repaired after the welding, and the quality is controlled by visually observing the uniformity of the anticorrosion layer and detecting the thickness by using an electromagnetic thickness detector.

[0012] In the above technical scheme, further, the anode component is installed by measuring the size and recording the mark before the installation, the inside truss levelness of the shell is measured by using a level and is adjusted to be horizontal by using an FRP pad, the anode component and the inside truss fulcrum mark of the shell are well marked during the installation, the installation position is determined by comparison, the "iron carrying pole" is matched with two 25T automobile cranes to complete the turnover transportation, the perpendicularity is measured by using a plumb bob after the hoisting is in place, the oil top is adjusted when the perpendicularity does not meet the standard, the sealing is divided into upper and lower parts, the lower part is sealed by using an FRP plate and resin, and the upper part is sealed by using an FRP Ω-shaped mold matched with glass fiber and resin.

[0013] In the above technical scheme, further, the shell is separated into two parts by a partition plate and a U-shaped bolt before the cathode wire is installed, three groups of personnel are arranged for each electric field, and the upper two groups are responsible for temporary suspension and positioning and fastening, and the lower group is responsible for fastening the lower part to prevent the cathode wire from being bent, deformed and twisted.

[0014] In the above technical scheme, further, the inlet spray part is welded to the inside of the outlet horn by full argon arc welding, the nozzle is protected during welding, compressed air is used to blow the pipeline inside the inlet spray part after installation, then a pressure test under 1.25 times working pressure is carried out, and the atomization effect of the nozzle under different pressures is tested.

[0015] Compared with the prior art, the present application has the following beneficial effects: 1. The construction efficiency is greatly improved: the existing sequential installation technology is closely connected in each link, and a delay in one place will affect the overall construction period, and the simple segmented installation lacks systematic planning, which leads to difficulty in internal operation, the present application adopts a step-by-step combined lifting and cross-operation mode, reasonably plans the process, such as ground assembly lifting of the shell, corrosion prevention and installation, and cross-operation day and night, reduces the waiting time of the process, fully utilizes the construction space and time, and effectively shortens the construction period.

[0016] 2. The cost is significantly reduced: the traditional whole lifting relies on hundreds of tons of lifting equipment, and the rental and transportation cost is high. The present application uses small equipment such as 25t truck crane, reduces the equipment rental cost, at the same time, optimizes the construction process, reduces the equipment exposure time and the probability of rework, reduces the corrosion treatment cost and material loss, and realizes effective control of the comprehensive cost.

[0017] 3. The installation quality is reliably guaranteed: in the prior art, the corrosion is placed behind or treated centrally, which is easy to cause incomplete coating coverage and equipment rust, and the simple segmented installation affects the installation accuracy of internal precision parts, the present application strengthens quality control in multiple links, such as measurement and adjustment before installation of the anode module, use of a specific flanging technology to prevent collision, multi-person cooperation to prevent deformation during installation of the cathode wire, strict welding and testing of the secondary atomization system, etc., to ensure accurate installation of each part; the corrosion construction is carried out throughout the whole process, and the key areas are strengthened to ensure long-term stable operation of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 The present application provides a side view structure sectional view of a wet-type electric dust removal device; Fig. 2 The present application provides a front view structure sectional view of a wet-type electric dust removal device; Fig. 3 The present application provides an upper view structure sectional view of a wet-type electric dust removal device.

[0019] In the figure: 1, the body frame; 2, drainage components; 3, ash bucket; 4, water supply pipeline; 5, shell; 6, outlet horn; 7, regular flushing components; 8, water film spraying components; 9, cathode hanging; 10, cathode components; 11, anode components; 12, inlet horn; 13, inlet spraying components; 14, hot air components; 15, first insulation protection pipe; 16, second insulation protection pipe; 17, high-voltage power supply system; 18, corridor platform. DETAILED DESCRIPTION

[0020] In order to enable more clearly understand the above-mentioned purpose, features and advantages of the present application, the following will be further described in detail in combination with the drawings and specific embodiments.

[0021] As Figs. 1 to 3 shown in a kind of steel billet flame cleaning wet type electric dust collector and installation method, including body frame 1, drainage components 2 are fixedly installed in the inside of body frame 1, the top of drainage components 2 is fixedly installed with ash bucket 3, the top of ash bucket 3 is fixedly installed with water supply pipeline 4, water supply pipeline 4 is fixedly installed in the bottom of shell 5, shell 5 is separated into upper and lower cavities, shell 5 is internally trussed to set up catwalk, facilitate staff to install the both ends of shell 5 are respectively fixedly connected with outlet horn 6 and inlet horn 12, regular flushing components 7 and water film spraying components 8 are fixedly installed in the inside of shell 5, water film spraying components 8 are arranged at the bottom of regular flushing components 7, anode components 11 and cathode assembly are sequentially installed from bottom to top in the inside of shell 5, cathode assembly includes cathode components 10 and cathode hanging 9, inlet spraying components 13 are fixedly installed in the inside of inlet horn 12, hot air components 14, first insulation protection pipe 15, second insulation protection pipe 16 and high-voltage power supply system 17 are fixedly installed in the top of shell 5, corridor platform 18 is fixedly installed in the side wall of shell 5, by the setting of corridor platform 18, it is convenient for staff to install wet type electric dust collector, it needs to be noted that, need to wait after wet type electric dust collector is installed, then arrange hot air components 14, first insulation protection pipe 15, second insulation protection pipe 16 and high-voltage power supply system 17 etc.

[0022] A kind of steel billet flame cleaning wet type electric dust collector installation method, wet type electric dust collector is divided into multiple parts, adopts the method of step-by-step combination hoisting, installs anticorrosion cross operation according to following order: shell 5, insulation heat preservation cylinder installation, anticorrosion construction, anode module 11 installation, cathode wire installation and inlet spraying components 13 installation.

[0023] The shell 5 is installed by ground assembly, and the hopper, water supply pipeline 4, outlet horn 6, inlet horn 12 and truss are assembled from bottom to top. After the assembly is completed, welding and polishing are performed. The shell 5 after assembly is hoisted by a 25T truck crane. After hoisting is completed, the outlet horn 6 is connected to the desulfurization absorption tower through a non-metal expansion joint. The anode module 11, cathode wire, periodic flushing part 7 and water film spraying part 8 are installed inside the shell 5. The anode module 11 is divided into four electric fields by a PP plate.

[0024] The insulation cylinder is hoisted by a 25T truck crane and installed in the shell 5. During the process, the heater, porcelain bottle and cathode beam hanger inside the insulation cylinder are hoisted synchronously. After installation, the connection flange joint surface of the insulation cylinder is sealed with FRP.

[0025] The anticorrosion construction is performed in the following sequence: shell inspection, base body sand blasting, primer brushing, mortar application, local FRP reinforcement, quality detection and repair acceptance, finish coating and overall acceptance.

[0026] The anticorrosion construction is performed in the following sequence: shell inspection, base body sand blasting, primer brushing, mortar application, local FRP reinforcement, quality detection and repair acceptance, finish coating and overall acceptance.

[0027] Before installation of the anode part 11, the size is measured and marked. The levelness of the truss inside the shell 5 is measured by a level and adjusted to be level by an FRP pad. The installation position of the anode part 11 and the truss inside the shell 5 is marked and determined by comparison. The "iron pole" is used to cooperate with two 25T truck cranes to complete the turnover and transportation. After hoisting in place, the perpendicularity is measured by a plumb bob. If it does not meet the standard, it is adjusted by an oil top. The seal is divided into upper and lower parts. The lower part is sealed by an FRP plate and resin. The upper part is sealed by an FRP Ω-shaped mold, glass fiber and resin.

[0028] Before installation of the cathode wire, the shell 5 is divided by a partition and a U-shaped bolt. During installation, three groups of personnel are arranged in each electric field. The upper two groups are responsible for temporary suspension and positioning and fastening. The lower group corresponds to fastening the lower part to prevent bending and deformation and twisting of the cathode wire.

[0029] The inlet spraying part 13 is welded to the inside of the outlet horn 6 by full argon arc welding. The nozzle is protected during welding. After installation, the pipeline inside the inlet spraying part 13 is blown by compressed air. Then, a pressure test at 1.25 times the working pressure is performed, and the atomization effect of the nozzle under different pressures is tested.

[0030] The best way to implement the present application needs to strictly follow the method of step-by-step combination hoisting, installation and anticorrosion cross operation, and closely follow the construction principle of "first frame, then body, from outside to inside, installation matching anticorrosion, anticorrosion interpenetration installation", accurate control of each link from construction preparation to acceptance, as follows: 1. Construction preparation stage: comprehensively prepare various types of equipment and materials needed for construction, including hoisting equipment such as 25t truck crane, anticorrosion materials and wet type electric dust removal device components, and carry out technical briefing and safety training for construction personnel to ensure their familiarity with the operation points and quality standards of each link. At the same time, reasonably plan the layout of the construction site, reserve enough working space and material storage area, lay a foundation for the smooth development of subsequent construction; 2. Step-by-step combination hoisting and installation: First, install the body frame 1 to build the basic framework of the entire system and ensure the dimensional accuracy and stability of the frame to provide reliable support for the installation of subsequent components; After completing the frame installation, carry out the shell 5 installation, assemble the outlet horn 6, shell 5 and internal truss on the ground respectively, and use the 25t truck crane to hoist from bottom to top in turn. Before hoisting, complete the ground welding and polishing work of the components, and set up a jump board on the shell 5 truss to facilitate the work of construction personnel. Among them, the outlet horn 6 is connected with the desulfurization absorption tower through a non-metallic expansion joint, the internal truss of the shell 5 is used to arrange the secondary atomization pipeline, and the upper and lower boxes are used to install the anode module 11, cathode wire, periodic flushing component 7 and water film spraying component 8 respectively; Install the insulation cylinder, adopt single piece hoisting method, install the internal heater, porcelain bottle and cathode beam hanger in place during hoisting, and after installation, use FRP or acid-resistant sealant to seal the internal flange joint surface to ensure the sealing quality; Install the cathode hanging 9 girder and anode module 11 in the order of "first down and then up". Before installing the anode module 11, accurately measure its size and record it. Measure the levelness of the anode module 11 fulcrum lower shell 5 truss by using a level, and adjust it by using FRP pads of various thicknesses. Use "iron pole" to cooperate with two truck cranes to complete the anode module 11 edge turning and transportation to ensure that no collision damage occurs during hoisting. After positioning, measure the perpendicularity by using a plumb line, and make fine adjustment by using oil top and pad. Before installing the cathode wire, first install the partition plate between each electric field, and three groups of construction personnel work synchronously from top to bottom to prevent the cathode wire from bending and deforming and to ensure the installation accuracy; Install the periodic flushing component 7 and water film spraying component 8 in turn, adjust the cathode wire and install the inlet spraying component 13. When installing the inlet spraying component 13, use full argon arc welding on the ground to weld the pipeline, protect the nozzle during installation, and after installation, blow and flush the pipeline, and conduct tightness test and nozzle atomization effect test; 3. Installation and anti-corrosion work are carried out simultaneously: Anti-corrosion construction is carried out throughout the entire installation process. After the shell 5 passes inspection, the substrate is immediately sandblasted, primer is applied, and putty is applied. Local FRP reinforcement is carried out in key areas such as wall panels and truss corners. The anti-corrosion work of the upper and lower box trusses and wall panels is completed on the ground using a segmented construction method. For parts that need to be welded, reservations are made. After the components are in place and welded, local anti-corrosion repairs are carried out in a timely manner. The uniformity of the anti-corrosion layer is visually inspected and the thickness is measured by an electromagnetic thickness gauge to strictly control the quality of anti-corrosion. 4. Acceptance Phase: After all installation and anti-corrosion work is completed, a comprehensive acceptance test will be conducted on the billet flame cleaning wet electrostatic precipitator in accordance with relevant standards and specifications. This test will check whether the installation of each component meets the design requirements, whether the system is operating stably, and whether the quality of the anti-corrosion layer meets the standards, to ensure that the system can operate safely and efficiently and maximize the role of the wet electrostatic precipitator.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A wet electrostatic precipitator for flame cleaning of steel billets, comprising a main frame (1), characterized in that, The main body frame (1) is fixedly installed with a drainage component (2), and a ash hopper (3) is fixedly installed on the top of the drainage component (2). A water supply pipe (4) is fixedly installed on the top of the ash hopper (3). The water supply pipe (4) is fixedly installed at the bottom of the shell (5). An outlet horn (6) and an inlet horn (12) are fixedly connected to both ends of the shell (5). A periodic flushing component (7) and a water film spraying component (8) are fixedly installed inside the shell (5). The water film spraying component (8) is located at the bottom of the periodic flushing component (7).

2. The wet electrostatic precipitator for billet flame cleaning according to claim 1, characterized in that, The inside of the housing (5) is equipped with an anode component (11) and a cathode assembly from bottom to top. The cathode assembly includes a cathode component (10) and a cathode hanger (9). An inlet spray component (13) is fixedly installed inside the inlet horn (12). A hot air component (14), a first insulating protection pipe (15), a second insulating protection pipe (16) and a high-voltage power supply system (17) are fixedly installed on the top of the housing (5). A corridor platform (18) is fixedly installed on the side wall of the housing (5).

3. An installation method for a wet electrostatic precipitator for billet flame cleaning as described in claim 2, characterized in that, The wet electrostatic precipitator is divided into multiple parts and installed in the following order using a step-by-step combination hoisting, installation and anti-corrosion cross-operation method: shell (5), insulation and heat preservation cylinder installation, anti-corrosion construction, anode module (11) installation, cathode wire installation and inlet spray component (13) installation.

4. The installation method of the wet electrostatic precipitator for billet flame cleaning according to claim 3, characterized in that, The shell (5) is installed by ground assembly. The ash hopper (3), water supply pipeline (4), outlet horn (6), inlet horn (12) and truss are assembled from bottom to top. After the assembly is completed, welding and grinding are carried out. A 25T truck crane is used to lift the assembled shell (5). After the lifting is completed, the outlet horn (6) is connected to the desulfurization absorption tower through a non-metallic expansion joint. The shell (5) is equipped with an anode module (11), cathode wire, periodic flushing component (7) and water film spray component (8). The anode module (11) is divided into four electric fields by PP plate.

5. The installation method of the wet electrostatic precipitator for billet flame cleaning according to claim 3, characterized in that, The insulating and heat-preserving cylinder is installed by a 25T truck crane, which lifts it into the interior of the shell (5) one piece at a time, and the internal connecting flange joint surface is sealed with FRP after installation.

6. The installation method of a wet electrostatic precipitator for billet flame cleaning according to claim 5, characterized in that, The anti-corrosion construction shall proceed in the following steps: shell inspection, substrate sandblasting, primer application, putty application, local FRP reinforcement, quality inspection and repair acceptance, topcoat application, and comprehensive acceptance.

7. The installation method of a wet electrostatic precipitator for billet flame cleaning according to claim 6, characterized in that, The anti-corrosion construction process adopts a segmented and piece-by-piece approach, with day and night cross-operations with the installation. Welding positions are reserved for ground anti-corrosion, and local repairs are carried out after welding. The quality is controlled by visually inspecting the uniformity of the anti-corrosion layer and detecting the thickness with an electromagnetic thickness gauge.

8. The installation method of the wet electrostatic precipitator for billet flame cleaning according to claim 3, characterized in that, Before installation, the dimensions of the anode component (11) are measured and marked. The level of the internal truss of the housing (5) is measured with a level and adjusted to level with FRP pads. During installation, the support points of the anode component (11) and the internal truss of the housing (5) are marked and compared to determine the installation position. The "iron flat pole" is used in conjunction with two 25T truck cranes to complete the flipping and transfer. After hoisting into place, the verticality is measured with a plumb bob. If it does not meet the standard, it is adjusted with an oil jack. The seal is divided into upper and lower parts. The lower part is sealed with FRP plate and resin, and the upper part is sealed with FRP Ω-type mold, glass fiber and resin.

9. The installation method of a wet electrostatic precipitator for billet flame cleaning according to claim 3, characterized in that, Before the cathode wire is installed, the interior of the housing (5) is divided by partitions and U-bolts. During installation, three groups of people work simultaneously in each electric field. The two groups above are responsible for temporary suspension and positioning and fastening, and the group below is responsible for fastening the lower part to prevent the cathode wire from bending, deforming and twisting.

10. The installation method of a wet electrostatic precipitator for billet flame cleaning according to claim 3, characterized in that, The imported spray component (13) was welded to the inside of the outlet horn (6) by full argon arc welding. The nozzle was protected during welding. After installation, compressed air was used to purge the internal pipes of the imported spray component (13). Then, a pressure test of 1.25 times the working pressure was carried out, and the atomization effect of the nozzle under different pressures was tested.

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