A process for the reactivation of catalyst

Abstract

The application discloses a kind of furnace repair processes, comprising the following steps: preparation equipment: first need preparation equipment;Prepare steel: the steel needing furnace repair treatment is prepared;Debugging equipment: debugging equipment to ensure normal operation of equipment;Irradiate steel: laser beam is irradiated to the area needing furnace repair;Post-processing: after steel is repaired, surface modification treatment is needed;Steel inspection: the steel after treatment is inspected.The application irradiates laser beam to the area needing furnace repair, and the heating area needs to be selected and controlled according to the type and shape of steel, to ensure that not only the decontamination effect can be achieved, but also the steel deformation, cracking and other problems will not be caused, the laser is used to locally heat and clean the area needing furnace repair, and the local laser furnace repair is strong, so only the area needing cleaning needs to be locally heated and cleaned, which reduces the waste of resources and reduces the impact on the whole steel.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of repair of converter, in particular to a repair of converter process. BACKGROUND

[0002] The repair of converter refers to the repair operation of the converter for the sudden local damage or the vulnerable and eroded parts, and the repair of converter usually has two methods of hot repair and cold repair, the traditional repair method of converter is to repair the converter by using magnesium carbon bricks, large surface materials and the like, and the sintering needs to be performed for a long time each time the converter is repaired, the repair surface of the pig iron block is the slagging surface, the pig iron is adhered to reduce the mechanical erosion of the converter body, so as to reduce the consumption of the repair material and improve the service life of the converter lining.

[0003] The repair of converter is an important process link in steel production, the traditional hot repair process usually adopts the electric arc furnace repair, the electric arc furnace repair is generally suitable for large area repair operation, since the electric arc furnace repair needs a long time for each repair, the cost of converter protection is high, and the energy consumption is large, when the local repair operation is needed, the electric arc furnace repair is not suitable, and it does not conform to the current concept of energy saving and environmental protection. SUMMARY

[0004] The present application aims to provide a repair of converter process to solve the problems in the background.

[0005] To achieve the above object, the present application provides the following technical scheme:

[0006] A repair of converter process, comprising the following steps:

[0007] Step S1, preparing equipment: first, the laser, optical fiber, scanning head and control system and the like are needed, the laser needs to have high power and strong focal point, the optical fiber needs to have high transmittance and energy transmission rate, and a suitable scanning head needs to be selected for irradiation and control;

[0008] Step S2, preparing steel material: the steel material needing repair is inspected and prepared, the surface grease, corrosion and dirt and the like are removed, the repair effect is improved, and the area needing repair should be marked, so as to control the irradiation during repair;

[0009] Step S3, debugging equipment: the equipment is debugged to ensure that the laser, optical fiber and scanning head and the like work normally, and the appropriate parameters such as power, pulse width and scanning speed and the like are set;

[0010] Step S4, irradiating the steel material: irradiate the laser beam to the area that needs to be repaired, and heat the area as needed according to the type and shape of the steel material to ensure that not only the decontamination and cleaning effect can be achieved, but also the deformation and cracking of the steel material can be avoided. The laser repair area is locally heated and cleaned using a laser. The local repair of the laser is strong, so only the area that needs to be cleaned needs to be heated and cleaned locally, reducing resource waste and reducing the impact on the entire steel material;

[0011] Step S5, post-processing: after the steel material is repaired, surface modification treatment is needed according to specific needs to improve the performance and application range of the steel material, such as increasing the hardness, wear resistance, and corrosion resistance of the steel material;

[0012] Step S6, steel material inspection: after the surface modification treatment is completed, the treated steel material is inspected to ensure that the composition and process requirements of the steel material meet the expected repair effect. The detection process includes steel chemical composition detection, steel mechanical property detection, and steel surface property detection.

[0013] Further, in step S2, the specific steps for marking the repair area are as follows:

[0014] Step S2-1, first, the steel material needs to be inspected and analyzed to determine the area that needs to be repaired. This area may be oxides, dirt, or other undesirable substances on the surface of the steel material.

[0015] Step S2-2, after determining the area that needs to be repaired, a special color pen or paint can be used to mark the area. Digital, alphabetical, and other marking methods can be used to facilitate subsequent processing control and operation.

[0016] Step S2-3, according to the specific repair requirements and the operating capacity of the laser equipment, determine the size and shape of the marked area. The size of the marked area should be as small as possible to reduce the impact of laser heating on the entire steel material.

[0017] Step S2-4, before using the laser radiation repair method, the marked area needs to be cleaned to remove surface grease, dirt, oxides, etc. to improve the repair effect.

[0018] Further, in step S5, after the surface modification treatment is completed, the repair area needs to be inspected to ensure that the repair effect meets the requirements and to remove any residual dirt and impurities that may have been left over during the repair process. Also, record the repair parameters and data, such as the temperature, time, laser power, and wavelength of the repair area, to facilitate subsequent detection and analysis of the repair effect.

[0019] Further, in step S6, the steel material inspection process is as follows:

[0020] Step S6-1, the chemical composition of steel is detected to ensure that the composition of the steel meets the requirements, achieves the expected effect of the furnace, and the chemical composition is detected by various methods to measure the content of various elements, including spectral analysis, flame atomic absorption spectrometry, inductively coupled plasma emission spectrometry and other methods;

[0021] Step S6-2, the mechanical properties of the steel are detected to test the strength, toughness, hardness and other performance indicators of the steel, and the specific detection methods include tensile test, impact test, hardness test and the like;

[0022] Step S6-3, the surface properties of the steel are detected to ensure that the quality of the surface of the steel meets the requirements, and the expected effect of the furnace is achieved, and the specific detection methods include adhesion test, hardness test and the like;

[0023] Further, in the step S4, the specific data of the laser radiation furnace repair are:

[0024] 1. Laser power: 500W;

[0025] 2. Laser wavelength: 1064nm;

[0026] 3. Scanning speed: 10m / min;

[0027] 4. Furnace repair area temperature: about 700°C;

[0028] 5. Furnace repair time: about 30 seconds.

[0029] Compared with the prior art, the beneficial effects of the present application are:

[0030] The present application irradiates the laser beam to the area needing furnace repair, and the heating area needs to be selected and controlled according to the type and shape of the steel to ensure that not only the decontamination and cleaning effect can be achieved, but also the steel deformation, cracking and other problems can be avoided. The laser is used to locally heat and clean the area needing furnace repair. The local laser furnace repair is strong, so only the area needing cleaning needs to be locally heated and cleaned, which reduces the waste of resources and reduces the impact on the entire steel;

[0031] After completing the surface modification treatment, the furnace repair area needs to be inspected to ensure that the furnace repair effect meets the requirements, and the dirt and impurities that may be left during the furnace repair process are removed, and the parameters and data of the furnace repair, such as the temperature, time, laser power and wavelength of the furnace repair area, are recorded, so as to facilitate the detection and analysis of the furnace repair effect;

[0032] The post-inspection detection step of the laser radiation repair furnace includes detecting the chemical composition of the steel material, detecting the mechanical properties of the steel material and the surface properties of the steel material, etc., which can ensure the quality and performance of the steel material and prepare for the next use. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 A repair furnace process flow diagram is provided. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0035] Please refer to Figure 1 The present application provides a technical solution:

[0036] A repair furnace process, comprising the following steps:

[0037] Step S1, preparing equipment: first, laser, optical fiber, scanning head and control system and other equipment need to be prepared, the laser needs to have high power and strong focus, the optical fiber needs to have high transmittance and energy transmission rate, and a suitable scanning head needs to be selected for irradiation and control;

[0038] Step S2, preparing steel material: the steel material that needs to be repaired is inspected and prepared, and the surface grease, corrosion and dirt are removed to improve the repair effect, and the area that needs to be repaired should be marked out for irradiation control during repair;

[0039] Step S3, debugging equipment: debugging the equipment to ensure that the laser, optical fiber and scanning head work normally, and setting appropriate parameters such as power, pulse width and scanning speed;

[0040] Step S4, irradiating the steel material: the laser beam is irradiated to the area that needs to be repaired, and the heating area needs to be selected and controlled according to the type and shape of the steel material to ensure that not only the cleaning effect can be achieved, but also the problems such as deformation and cracking of the steel material will not occur, the laser is used to locally heat and clean the area that needs to be repaired, the local heating and cleaning of the laser repair furnace is strong, so only the area that needs to be cleaned needs to be heated and cleaned, which reduces the waste of resources and also reduces the influence on the whole steel material;

[0041] Step S5, post-processing: after the steel passes through the furnace, surface modification treatment is needed according to specific needs to improve the performance and application range of the steel, such as increasing the hardness, wear resistance, corrosion resistance, etc.

[0042] Step S6, steel inspection: after the surface modification treatment is completed, the treated steel is inspected to ensure that the composition of the steel meets the process requirements and achieves the expected furnace repair effect, and the detection process includes steel chemical composition detection, detection of steel mechanical properties and detection of steel surface properties.

[0043] In the present application, in step S2, the specific steps for marking the area of the furnace repair are as follows:

[0044] Step S2-1, first, the steel needs to be inspected and analyzed to determine the area that needs to be repaired, which may be oxides, dirt or other undesirable substances on the surface of the steel;

[0045] Step S2-2, after determining the area that needs to be repaired, a special color pen or paint can be used to mark the area, and numbers, letters, etc. can be used as marking methods to facilitate subsequent processing control and operation;

[0046] Step S2-3, according to the specific repair requirements and the operating capacity of the laser equipment, the size and shape of the marked area are determined, and the size of the marked area should be as small as possible to reduce the impact of laser heating on the entire steel;

[0047] Step S2-4, before using the laser irradiation repair method, the marked area needs to be cleaned to remove surface grease, dirt, oxides, etc. to improve the repair effect;

[0048] In the present application, in step S5, after the surface modification treatment is completed, the repair area needs to be inspected to ensure that the repair effect meets the requirements and to remove possible residual dirt and impurities during the repair process, and the parameters and data of the repair, such as the temperature, time, laser power and wavelength of the repair area, are recorded to facilitate subsequent detection and analysis of the repair effect;

[0049] In the present application, in step S6, the steel inspection process is as follows:

[0050] Step S6-1, chemical composition detection of the steel is performed to ensure that the composition of the steel meets the requirements and achieves the expected repair effect, and the chemical composition detection is performed by various methods to determine the content of various elements, including spectral analysis, flame atomic absorption spectrometry, inductively coupled plasma emission spectrometry, etc.

[0051] Step S6-2, mechanical property detection of the steel material is performed to check the strength, toughness, hardness and other performance indexes of the steel material, and the specific detection methods include tensile test, impact test, hardness test and the like;

[0052] Step S6-3, surface property detection of the steel material is performed to ensure that the quality of the surface of the steel material meets the requirements and achieves the expected effect of the furnace repair, and the specific detection methods include adhesion test, hardness test and the like;

[0053] In the present application, in the step S4, the specific data of the laser irradiation furnace repair are as follows:

[0054] 1. Laser power: 500W;

[0055] 2. Laser wavelength: 1064nm;

[0056] 3. Scanning speed: 10m / min;

[0057] 4. Furnace repair area temperature: about 700°C;

[0058] 5. Furnace repair time: about 30 seconds.

[0059] It should be noted that, in this document, the terms such as first and second are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or equipment including a series of elements includes not only those elements, but also other elements not explicitly listed or inherent to such a process, method, article or equipment.

[0060] Although the embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A furnace repair process, characterized in that: The following steps are involved: Step S1, prepare equipment: First, prepare the laser, optical fiber, scanning head and control system. The laser needs to have high power and strong focus, the optical fiber needs to have high transmittance and energy transmission rate, and a suitable scanning head needs to be selected for irradiation and control; Step S2, steel preparation: The steel that needs to be repaired is inspected and prepared to remove surface grease, corrosion and dirt. The areas that need to be repaired are marked to facilitate irradiation control during repair. Step S3, debugging the equipment: debugging the equipment to ensure that the laser, optical fiber and scanning head are working properly, and setting appropriate parameters, including power, pulse width and scanning speed; Step S4, irradiating the steel: irradiating the laser beam to the area that needs to be repaired. The heating area needs to be selected and controlled according to the type and shape of the steel. The laser is used to locally heat and clean the area that needs to be repaired. Among them, the specific data of laser radiation furnace repair are: (1) Laser power: 500W; (2) Laser wavelength: 1064nm; (3) Scanning speed: 10m / min; (4) Temperature of the furnace repair area: 700°C; (5) Furnace filling time: 30 seconds; Step S5, post-processing: After the steel has been reheated, it is necessary to perform surface modification according to specific needs, including increasing the hardness, wear resistance, and corrosion resistance of the steel; Step S6, steel inspection: After the surface modification treatment is completed, the treated steel is inspected to ensure that the composition of the steel meets the process requirements and achieves the expected furnace repair effect. The inspection process includes steel chemical composition inspection, steel mechanical property inspection, and steel surface property inspection; In step S2, the specific steps of marking the area of ​​the furnace repair are as follows: Step S2-1: First, the steel needs to be inspected and analyzed to determine the area that needs to be repaired. This area may be oxides or dirt on the steel surface; Step S2-2: After determining the area that needs to be repaired, use a special color pen or paint to mark the area, including using numbers or letters; Step S2-3: Determine the size and shape of the marking area based on the specific furnace repair requirements and the operating capabilities of the laser equipment. The size of the marking area should be as small as possible to reduce the impact of laser heating on the entire steel. Step S2-4: Before using the laser radiation furnace repair method, the marked area needs to be cleaned to remove grease, dirt, and oxides on the surface; In step S5, after the surface modification treatment is completed, the furnace repair area needs to be inspected to ensure that the furnace repair effect meets the requirements, and to remove dirt and impurities that may remain during the furnace repair process. At the same time, the parameters and data of the furnace repair are recorded, including the temperature of the furnace repair area, the furnace repair time, the laser power and the laser wavelength; In step S6, the steel inspection process is specifically as follows: Step S6-1, chemical composition testing of the steel is performed to ensure that the composition of the steel meets the requirements and achieves the expected furnace repair effect. Chemical composition testing is performed by measuring the content of various elements using a variety of methods, including spectral analysis, flame atomic absorption spectrometry, and inductively coupled plasma optical emission spectrometry. Step S6-2: Conducting a mechanical property test on the steel to examine its strength, toughness, and hardness. Specific testing methods include tensile testing, impact testing, and hardness testing. Step S6-3, testing the surface properties of the steel to ensure that the quality of the steel surface meets the requirements and achieves the expected furnace repair effect. Specific testing methods include adhesion testing and hardness testing.

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