Environment-friendly bimetallic passivator and reaction kettle for production

Abstract

The invention relates to the field of petroleum additives, in particular to an environment-friendly bimetallic passivator and a reaction kettle for production. The environment-friendly double-metal passivator comprises the following components in percentage by mass: 5 to 10 weight percent of antimony trioxide, 5 to 10 weight percent of cerous carbonate, 1 to 8 weight percent of citric acid, 5 to 10 weight percent of hydrogen peroxide, 5 to 10 weight percent of ammonium persulfate, 5 to 10 weight percent of ammonium dihydrogen phosphate, 1 to 5 weight percent of triethylamine, 1 to 2 weight percent of monoethanolamine, 1 to 2 weight percent of a weather-resistant modifier, 0.5 to 1 weight percent of a corrosion inhibitor and 50 to 60 weight percent of demineralized water. The weather resistance modifier is sodium silicate, and the corrosion inhibitor is hydroxyethylidene diphosphonic acid. The weather-resistant modifier and the corrosion inhibitor are filled into the passivator, so that the mechanical strength and the wear resistance of a coating are improved, the service life is prolonged, and meanwhile, the passivator has an excellent scale inhibition effect and good biodegradability.

Description

Technical Field

[0001] The invention relates to the field of petroleum additives, in particular to an environmentally friendly bimetallic passivator and a reaction kettle for production. Background Art

[0002] Environmentally friendly bimetallic passivator is a chemical used for metal surface treatment, designed to reduce environmental impact and provide excellent corrosion protection. It prevents corrosion and extends the service life of metal products by forming a stable oxide film or chemical reaction layer on the surface of steel and other metals to prevent oxygen, water and harmful chemicals from contacting the metal. This type of passivator usually contains two or more metal compounds that can form a protective barrier on the metal surface. Existing bimetallic passivators lack corrosion inhibitors and weathering improvers, resulting in the passivation film being unable to obtain a uniform and stable protective layer on the metal surface. Insufficient local stability makes these areas more susceptible to corrosive media, thereby reducing the overall protective effect. Physical and chemical changes are prone to occur under high temperature conditions, and temperature fluctuations can cause uneven expansion and contraction of the coating, resulting in cracks or blistering. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an environmentally friendly bimetallic passivator and a production reactor.

[0004] The technical solution is as follows: an environmentally friendly bimetallic passivator, comprising the following components in mass percentage: 5~10wt% antimony trioxide, 5~10wt% cerium carbonate, 1~8wt% citric acid, 5~10wt% hydrogen peroxide, 5~10wt% ammonium persulfate, 5~10wt% diammonium phosphate, 1~5wt% triethylamine, 1~2wt% monoethanolamine, 1~2wt% weather resistance modifier, 0.5~1wt% corrosion inhibitor and 50~60wt% desalted water; The weather resistance modifier is sodium silicate, and the corrosion inhibitor is hydroxyethylidene diphosphonic acid.

[0005] Environmentally friendly bimetallic passivator production reactor, including: Bracket; A reaction tank is fixedly connected to the bracket, and the top and bottom of the reaction tank are respectively fixedly connected and connected with a filling pipe and a discharge pipe; There are two exhaust pipes, which are fixedly connected and communicated with the reaction tank, and a blocking piston is sealingly and slidably connected in the exhaust pipe; There are two first elastic members, which are respectively arranged between adjacent exhaust pipes and adjacent blocking pistons; A pressure sensor is disposed in the reaction tank and is used to detect the gas pressure in the reaction tank; A stirring assembly, disposed on the reaction tank, for stirring the material in the reaction tank; The heating component is arranged in the reaction tank and is used for heating the material in the reaction tank.

[0006] As a preferred technical solution of the present invention, the stirring assembly includes: A fixed frame, fixedly connected to the reaction tank; A first motor, fixedly connected to the fixing frame; A rotating shaft is sealed and rotatably connected to the inside of the reaction tank, the output shaft of the first motor is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to a stirring frame; A transmission assembly is arranged on the reaction tank and is used to switch the exhaust pipe to be opened.

[0007] As a preferred technical solution of the present invention, the transmission assembly includes: A swivel, rotatably connected to the fixing frame; An extrusion ring is fixedly connected to the inside of the rotating ring, and the two blocking pistons are both in contact with the extrusion ring; The driving assembly is arranged on the fixing frame and is used for driving the rotating ring to rotate.

[0008] As a preferred technical solution of the present invention, the driving assembly includes: A second motor is fixedly connected to the fixing frame; A first gear, fixedly connected to an output shaft of the second motor; The first gear ring is fixedly connected to the rotating ring, and the first gear ring is meshed with the first gear.

[0009] As a preferred technical solution of the present invention, the heating component includes: A heat exchange inner shell is sealed and rotatably connected to the interior of the reaction tank, and the heat exchange inner shell cooperates with the reaction tank to form a heat exchange cavity, and the reaction tank is fixedly connected with an air inlet pipe and an air outlet pipe communicating with the heat exchange cavity; There are a plurality of heat exchange plates, all of which are fixedly connected to the heat exchange inner shell, the heat exchange plates are provided with inner cavities, and the inner cavities of all the heat exchange plates are connected to the heat exchange cavity; The rotating assembly is arranged in the reaction tank and is used to drive the heat exchange inner shell to rotate.

[0010] As a preferred technical solution of the present invention, the plurality of heat exchange plates are evenly distributed circumferentially on circular trajectories of different radii with the central axis of the heat exchange inner shell as the central axis, and the heat exchange plates on the circular trajectories of different radii are staggered.

[0011] As a preferred technical solution of the present invention, the rotating assembly includes: A second gear ring is rotatably connected to the reaction tank, and the heat exchange inner shell is fixedly connected to the second gear ring; A second gear is rotatably connected to the reaction tank, and the second gear ring is meshed with the second gear; The third gear is fixedly connected to the rotating shaft, and the third gear is meshed with the second gear.

[0012] As a preferred technical solution of the present invention, it also includes: A locking assembly is provided on the reaction tank and is used to quickly lock the rotating shaft. The locking assembly includes: There are a plurality of clamping blocks, all of which are fixedly connected to the rotating shaft and located outside the reaction tank; A limit block is slidably connected to the reaction tank, the limit block limits the rotating shaft through the clamping block, and a second elastic member is provided between the limit block and the reaction tank; The pushing component is arranged on the limiting block and is used for pushing the limiting block to slide.

[0013] As a preferred technical solution of the present invention, the pushing component includes: A rotating member, fixedly connected to the first gear, wherein half of the circumference of the first gear ring indexing circle is an integral multiple of the circumference of the first gear indexing circle; A push block is fixedly connected to the limit block, and the rotating member is used for pressing the push block.

[0014] The beneficial effects produced by utilizing the above technical solution are as follows: 1. The present invention improves the mechanical strength and wear resistance of the coating and prolongs its service life by filling the weather resistance improver sodium silicate and the corrosion inhibitor hydroxyethylidene diphosphonic acid into the passivator, while having excellent scale inhibition effect and good biodegradability.

[0015] 2. By automatically detecting the pressure change in the reaction tank, when the pressure in the reaction tank increases, another exhaust pipe is automatically switched to discharge the gas in the reaction tank along the other exhaust pipe, so as to avoid the blockage of the exhaust pipe due to long-term use, which will cause the pressure in the reaction tank to increase sharply and affect the preparation quality of the passivating agent.

[0016] 3. The heating area of ​​the raw materials is increased by using a number of heat exchange plates. At the same time, the heat exchange plates and the stirring frame rotate in the opposite direction to stir the materials, so that the raw materials in the reaction tank are subjected to staggered rotational forces, so that the raw materials react evenly and the reaction rate is increased.

[0017] 4. By stopping the stirring and heating of the raw materials in the reaction tank when switching the exhaust pipe, and by means of physical limiting, the rotation of the rotating shaft is quickly stopped, the reaction rate of the raw materials is suppressed, the generation rate of the gas in the reaction tank is reduced, and the gas in the reaction tank is quickly discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the reaction tank of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the rotating ring and the extrusion ring of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the blocking piston of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of the first gear and the first gear ring of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the heat exchange inner shell and the heat exchange cavity of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the heat exchange plate of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the clamping block and the limiting block of the present invention.

[0019] In the accompanying drawings: 1-bracket, 2-reaction tank, 3-exhaust pipe, 4-sealing piston, 5-first elastic member, 21-fixed frame, 22-first motor, 23-rotating shaft, 24-stirring frame, 31-rotating ring, 32-extrusion ring, 33-second motor, 34-first gear, 35-first gear ring, 41-heat exchange inner shell, 42-heat exchange chamber, 43-heat exchange plate, 44-second gear ring, 45-second gear, 46-third gear, 51-block, 52-limiting block, 53-second elastic member, 54-rotating member, 55-push block. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are 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 ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] The existing bimetallic passivators lack corrosion inhibitors and weathering agents, which results in the inability of the passivation film to form a uniform and stable protective layer on the metal surface. This makes the local area more susceptible to corrosive media, reducing the overall protective effect. In addition, the coating is prone to physical and chemical changes under high temperature conditions, and temperature fluctuations can also cause uneven expansion and contraction, resulting in cracks or blistering.

[0022] 5-10wt% antimony trioxide, 5-10wt% cerium carbonate, 1-8wt% citric acid, 5-10wt% hydrogen peroxide, 5-10wt% ammonium persulfate, 5-10wt% diammonium phosphate, 1-5wt% triethylamine, 1-2wt% monoethanolamine, 1-2wt% weather resistance modifier, 0.5-1wt% corrosion inhibitor and 50-60wt% desalted water; the weather resistance modifier is sodium silicate, and the corrosion inhibitor is hydroxyethylidene diphosphonic acid.

[0023] The present invention fills the weather resistance modifier sodium silicate into the passivator. The sodium silicate can form a dense silicate film on the metal surface. This film not only provides a physical barrier to prevent moisture, oxygen and other corrosive substances from contacting the metal, but also increases the adhesion of the coating. At the same time, the corrosion inhibitor hydroxyethylidene diphosphonic acid can form a stable complex with metal ions to prevent these ions from precipitating to form scale or sediment, and adsorbing on the metal surface to form a thin and uniform protective film, thereby inhibiting the oxidation and corrosion process of the metal.

[0024] Environmentally friendly bimetallic passivator production reactor, please refer to Figure 1-Figure 4 As shown, it includes: a bracket 1; a reaction tank 2, which is fixedly connected to the bracket 1, and the top and bottom of the reaction tank 2 are respectively fixedly connected and connected with a filling pipe and a discharge pipe; two exhaust pipes 3, which are fixedly connected and connected to the reaction tank 2, and a blocking piston 4 is sealed and slidably connected in the exhaust pipe 3; two first elastic members 5, which are respectively arranged between adjacent exhaust pipes 3 and adjacent blocking pistons 4; a pressure sensor, which is arranged in the reaction tank 2 and is used to detect the gas pressure in the reaction tank 2; a stirring component, which is arranged on the reaction tank 2 and is used to stir the material in the reaction tank 2; a heating component, which is arranged in the reaction tank 2 and is used to heat the material in the reaction tank 2.

[0025] In the above scheme, a control terminal is arranged on the bracket 1, the reaction tank 2 is made of stainless steel and has a glass lining to improve the corrosion resistance of acids and alkalis, and a transparent observation mirror is arranged on the reaction tank 2 so that the staff can observe the reaction of the internal raw materials, and the two exhaust pipes 3 are connected to the external gas collection device to prevent the leakage of harmful gases, and the first elastic member 5 is a tension spring, which is used to drive the adjacent blocking piston 4 to move upward, and the first elastic member 5 is always in a stretched state, that is, the front blocking piston 4 protrudes out of the adjacent exhaust pipe 3, so that the gas generated by the reaction can enter the gas collection device along the front exhaust pipe 3, and at this time, the rear blocking piston 4 is in a blocked state with respect to the adjacent exhaust pipe 3, that is, the gas generated by the reaction cannot be discharged along the rear exhaust pipe 3, and after the front exhaust pipe 3 is blocked, the rear exhaust pipe 3 is opened to discharge the reaction tank 2 along the rear air pipe 3, so as to avoid the blockage of the exhaust pipe 3 due to long-term use, resulting in a sharp increase in the pressure in the reaction tank 2, affecting the preparation quality of the passivating agent.

[0026] For details, please refer to Figure 2 and Figure 3 As shown, the stirring assembly includes: a fixed frame 21, fixedly connected to the reaction tank 2; a first motor 22, fixedly connected to the fixed frame 21; a rotating shaft 23, sealed and rotatably connected to the inside of the reaction tank 2, the output shaft of the first motor 22 is fixedly connected to the rotating shaft 23, and the rotating shaft 23 is fixedly connected to a stirring frame 24; a transmission assembly, arranged on the reaction tank 2, for switching the exhaust pipe 3 open.

[0027] In the above scheme, the first motor 22 is connected to the control terminal point. The first motor 22 is a three-phase asynchronous motor with the advantages of high reliability, good overload capacity and easy maintenance. The exterior of the rotating shaft 23 and the stirring frame 24 are both provided with a corrosion-resistant coating, such as an epoxy phenolic resin coating, which has excellent resistance to acids and alkalis and good mechanical strength. The pressure sensor is electrically connected to the control terminal, and the pressure sensor is used to detect the gas pressure in the reaction tank 2.

[0028] For details, please refer to Figure 3 and Figure 5 As shown, the transmission assembly includes: a swivel 31, rotatably connected to the fixed frame 21; an extrusion ring 32, fixedly connected to the inside of the swivel 31, and two blocking pistons 4 are both in contact with the extrusion ring 32; a driving assembly, arranged on the fixed frame 21, for driving the swivel 31 to rotate.

[0029] In the above scheme, the rotating ring 31 is arranged parallel to the fixing frame 21, the extrusion ring 32 is arranged obliquely, and the inclination angle of the extrusion ring 32 can be freely set. The height difference between the highest point and the lowest point of the lower side of the extrusion ring 32 is sufficient to drive the blocking piston 4 to move upward to block the adjacent exhaust pipe 3. The outside of the extrusion ring 32 is provided with a wear-resistant coating, such as a chromium coating, which is used to reduce the friction loss between the extrusion ring 32 and the two blocking pistons 4 and extend the service life.

[0030] For details, please refer to Figure 2 , Figure 3 and Figure 5 As shown, the driving assembly includes: a second motor 33 fixedly connected to the fixing frame 21; a first gear 34 fixedly connected to the output shaft of the second motor 33; a first gear ring 35 fixedly connected to the rotating ring 31, and the first gear ring 35 meshes with the first gear 34.

[0031] In the above scheme, the second motor 33 is electrically connected to the control terminal. The second motor 33 is also a three-phase asynchronous motor. The first gear 34 and the first gear ring 35 are made of cast iron, which has high wear resistance and vibration reduction performance and low noise. The gas pressure in the reaction tank 2 is detected by the pressure sensor, and then the output shaft of the second motor 33 is controlled to drive the extrusion ring 32 to rotate 180°, switching the opening state of the two exhaust pipes 3.

[0032] For details, please refer to Figure 6 and Figure 7 As shown, the heating component includes: a heat exchange inner shell 41, which is sealed and rotatably connected to the inside of the reaction tank 2, and the heat exchange inner shell 41 and the reaction tank 2 cooperate to form a heat exchange chamber 42, and the reaction tank 2 is fixedly connected with an air inlet pipe and an air outlet pipe connected to the heat exchange chamber 42; a plurality of heat exchange plates 43, all of which are fixedly connected to the heat exchange inner shell 41, and the heat exchange plates 43 are provided with inner cavities, and the inner cavities of all heat exchange plates 43 are connected to the heat exchange chamber 42; a rotating component is arranged in the reaction tank 2, and is used to drive the heat exchange inner shell 41 to rotate; a plurality of heat exchange plates are circumferentially evenly distributed on circular trajectories of different radii with the central axis of the heat exchange inner shell as the central axis, and the heat exchange plates on the circular trajectories of different radii are staggered.

[0033] In the above scheme, the heat exchange inner shell 41 and all the heat exchange plates 43 are made of stainless steel, and a corrosion-resistant coating is provided on the outside, which has certain thermal conductivity and excellent corrosion resistance. The number of heat exchange plates 43 can be freely set. The air inlet pipe is located on the lower side of the reaction tank 2, and the air outlet pipe is located on the side wall of the reaction tank 2, which is convenient for hot gas to fully enter the inner cavity of the heat exchange plate 43 and improve the heat exchange rate. The shape of the heat exchange plate 43 is an arc plate. The number of heat exchange plates 43 is six, divided into three groups, each group has two heat exchange plates 43, and the distance from each group to the central axis of the heat exchange inner shell 41 is continuously increasing. The two adjacent groups of heat exchange plates 43 are staggered, which is used to increase the heating area of ​​the reactants and make the raw materials react evenly.

[0034] For details, please refer to Figure 6 As shown, the rotating assembly includes: a second gear ring 44, which is rotatably connected to the reaction tank 2, and the heat exchange inner shell 41 is fixedly connected to the second gear ring 44; a second gear 45, which is rotatably connected to the reaction tank 2, and the second gear ring 44 is meshed with the second gear 45; a third gear 46, which is fixedly connected to the rotating shaft 23, and the third gear 46 is meshed with the second gear 45.

[0035] In the above scheme, the exterior of the second gear ring 44, the second gear 45 and the third gear 46 are all provided with a corrosion-resistant coating, and the exterior is smooth, which prolongs the service life and facilitates cleaning. Here, through the transmission of the second gear 45, the rotation direction of the rotating shaft 23 is opposite to that of the heat exchange inner shell 41, so that the rotating shaft 23 and a plurality of heat exchange plates 43 stir the raw materials in an alternating manner, thereby improving the uniformity of the raw materials and increasing the preparation rate of the passivating agent.

[0036] Working principle: When it is necessary to prepare the passivating agent, the raw materials are transported to the reaction tank 2 along the injection pipe through a specific step. When the raw materials are transported, the first motor 22 is turned on, and the output shaft of the first motor 22 drives the rotating shaft 23 to rotate, and the rotating shaft 23 drives the stirring frame 24 to rotate to stir the raw materials in the reaction tank 2, so that the raw materials start to react. At the same time, a gas of a specific temperature is injected into the heat exchange chamber 42 through the air inlet pipe, so that the gas flows along the heat exchange chamber 42 and performs heat exchange on the raw materials in the reaction tank 2, and is finally discharged along the air outlet pipe, providing a reaction environment of a specific temperature for the raw materials in the reaction tank 2. The gas generated in the reaction will be discharged along the exhaust pipe 3 until the reaction is completed. The gas generated during the reaction will carry part of the raw materials and be discharged along the exhaust pipe 3 at the same time. After the temperature of the raw materials decreases, they will adhere to the inner wall of the exhaust pipe 3. After long-term use, the flow aperture of the exhaust pipe 3 will be reduced or even blocked, thereby causing the gas generated by the reaction to be unable to be discharged from the reaction tank 2, and the air pressure in the reaction tank 2 will increase.

[0037] When the exhaust pipe 3 is blocked, the gas generated in the reaction tank 2 cannot be discharged in time, and then accumulates in the reaction tank 2, causing the pressure in the reaction tank 2 to increase. At this time, the pressure sensor detects the pressure change and sends a signal to the control terminal. The control terminal turns on the second motor 33, so that the output shaft of the second motor 33 drives the first gear 34 to rotate, and the first gear 34 drives the rotating ring 31 to rotate synchronously through the first gear ring 35, and the rotating ring 31 drives the internal extrusion ring 32 to rotate synchronously, and this is done until the extrusion ring 32 rotates 180°, and then the second motor 33 is turned off. In this process, the extrusion ring 32 rotates 180°. The ring 32 drives the height of the two blocking pistons 4 to change, so that the first elastic member 5 in the front exhaust pipe 3 drives the adjacent blocking piston 4 to move upward to block the front exhaust pipe 3, and at the same time, the rear blocking piston 4 moves downward to open the rear exhaust pipe 3. At the same time, the first elastic member 5 on the rear side is stretched to discharge the gas accumulated in the reaction tank 2 along the rear exhaust pipe 3. By detecting the pressure change in the reaction tank 2, the other exhaust pipe 3 is automatically switched to discharge the reaction tank 2 along the remaining exhaust pipes 3, thereby avoiding the gradual increase of the gas pressure in the reaction tank 2 and affecting the preparation rate of the passivating agent.

[0038] When the rotating shaft 23 drives the stirring frame 24 to stir the reactants, the rotating shaft 23 drives the third gear 46 to rotate, and the third gear 46 drives the second gear ring 44 to rotate synchronously through the second gear 45, so that the second gear ring 44 drives the heat exchange inner shell 41 at the bottom to rotate synchronously, and the rotating shaft 23 and the heat exchange inner shell 41 are rotated in the opposite direction through the second gear 45 and the third gear 46. The heat exchange inner shell 41 drives its staggered heat exchange plates 43 and the stirring frame 24 to rotate in the opposite direction, so that the raw materials in the reaction tank 2 are subjected to staggered rotational force, so that the raw materials react evenly and the reaction rate is improved. At the same time, the heating area of ​​the raw materials is increased by a plurality of heat exchange plates 43, so that the temperature of the raw materials quickly rises to the required temperature at the beginning of the reaction, thereby improving the reaction rate.

[0039] When the passivating agent preparation is completed, the staff turns off the first motor 22, stops the rotation of the stirring frame 24 and the heat exchange inner shell 41, and stops injecting high-temperature gas into the air inlet pipe. Then, the product in the reaction tank 2 is discharged and the reaction tank 2 is cleaned. When the exhaust pipe 3 is blocked, the blocked exhaust pipe 3 is cleaned synchronously after the passivating agent is prepared to restore its original flow aperture. When the exhaust pipe 3 is blocked again, the above steps are repeated.

[0040] In further embodiments, please refer to Figure 8As shown, it also includes: a locking component, which is arranged on the reaction tank 2 and is used to quickly lock the rotating shaft 23. The locking component includes: a plurality of clamping blocks 51, which are all fixedly connected to the rotating shaft 23 and are located outside the reaction tank 2; a limiting block 52, which is slidably connected to the reaction tank 2, and the limiting block 52 limits the rotating shaft 23 through the clamping block 51. A second elastic member 53 is arranged between the limiting block 52 and the reaction tank 2; a pushing component, which is arranged on the limiting block 52 and is used to push the limiting block 52 to slide.

[0041] In the above scheme, the number of blocks 51 can be freely set, and several blocks 51 are circumferentially evenly distributed on the rotating shaft 23. The material of the block 51 and the limit block 52 is high-strength steel, which has a certain structural strength to reduce the possibility of collision and breakage. The second elastic member 53 is a spring, and the second elastic member 53 is used to drive the limit block 52 to reset.

[0042] For details, please refer to Figure 8 As shown, the pushing assembly includes: a rotating member 54, fixedly connected to the first gear 34, half of the circumference of the dividing circle of the first gear ring 35 is an integer multiple of the circumference of the dividing circle of the first gear 34; a pushing block 55, fixedly connected to the limiting block 52, and the rotating member 54 is used to squeeze the pushing block 55.

[0043] In the above scheme, half of the circumference of the dividing circle of the first gear ring 35 in the present application is twice the circumference of the dividing circle of the first gear 34, that is, the first gear ring 35 rotates 180°, and the first gear 34 rotates two circles. The rotating member 54 is provided with a groove, and the shape of the groove is an isosceles trapezoid, and the push block 55 is an isosceles trapezoidal block. The initial push block 55 is located in the groove of the rotating member 54. When switching the exhaust pipe 3, the first gear 34 will synchronously drive the rotating member 54 to rotate 180°. The groove of the rotating member 54 squeezes the push block 55 to instantly lock the rotating shaft 23, and promptly stops the stirring of the raw materials in the reaction tank 2. At the same time, the first motor 22 is turned off to suppress the reaction rate of the raw materials, reduce the generation rate of the gas in the reaction tank, and quickly discharge the gas shell in the reaction tank.

[0044] When the pressure sensor detects that the pressure in the reaction tank 2 increases, that is, the exhaust pipe 3 currently in use is blocked, and the second motor 33 is triggered to switch the exhaust pipe 3, the control terminal synchronously turns off the first motor 22, and stops injecting high-temperature gas into the intake pipe at the same time. By stopping stirring and heating the reactants, the gas generation rate is reduced to ensure that the pressure in the reaction tank 2 increases slowly or no longer increases. However, due to the rotational inertia of the rotating shaft 23 and the stirring frame 24, it is difficult for the rotating shaft 23 to stop rotating quickly, and its speed gradually slows down until it stops, resulting in the difficulty in reducing the rate of gas generation in the reaction tank 2. As a result, after switching the exhaust pipe 3, the gas in the reaction tank 2 cannot be discharged to the normal pressure state in time, affecting the preparation rate of the passivating agent. Therefore, when the output shaft of the second motor 33 drives the extrusion ring 32 to switch the exhaust pipe 3 through the first gear 34, the first gear ring 35 and the rotating ring 31, the first gear 34 drives the rotating member 54 to rotate synchronously. At this time, the groove of the rotating member 54 squeezes the push block 55, and the push block 55 is driven by the extrusion force of the rotating member 54 to drive the limit block 52 along the reaction tank 2. The tank 2 slides, and the second elastic member 53 is compressed, until the push block 55 fits the edge of the rotating member 54. At this time, the limit block 52 slides to the limit state. When the rotating shaft 23 is still rotating due to inertia, the rotating shaft 23 drives the block 51 of the annular array thereon to contact the limit block 52, so that the limit block 52 limits the rotating shaft 23 through the block 51, and the rotation of the rotating shaft 23 is stopped, until the first gear 34 drives the rotating member 54 to rotate two circles (at the same time, the first gear ring 35 rotates 180°), so that the push block 55 moves along the The rotating member 54 slides and finally stops in the groove of the rotating member 54. At this time, the rotating member 54 releases the limit on the push block 55, and the second elastic member 53 pushes the limit block 52 to return to the initial state. The limit block 52 releases the limit on the blocking block 51. When switching the exhaust pipe 3, the stirring and heating of the raw materials in the reaction tank 2 are stopped. At the same time, the rotation of the rotating shaft 23 is quickly stopped by physical limiting, thereby suppressing the reaction rate of the raw materials, reducing the generation rate of the gas in the reaction tank 2, and quickly discharging the gas shell in the reaction tank 2.

[0045] When the limit block 52 releases the limit on the blocking block 51, the synchronous switching of the exhaust pipe 3 is completed, and the gas accumulated in the reaction tank 2 begins to be discharged along the exhaust pipe 3, and this continues until the pressure sensor detects that the pressure of the reaction tank 2 returns to normal pressure. The pressure sensor sends a signal to the control terminal, so that the control terminal starts the first motor 22, and the output shaft of the first motor 22 drives the stirring frame 24 and a plurality of heat exchange plates 43 to continue stirring the raw materials through the rotating shaft 23, and at the same time continues to inject high-temperature gas into the intake pipe, continues to heat the raw materials to a specific temperature, and continues to prepare the passivating agent, and this continues until the reaction is completed.

[0046] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Environmentally friendly bimetallic passivator, characterized in that: The following components are included in mass percentage: 5~10wt% antimony trioxide, 5~10wt% cerium carbonate, 1~8wt% citric acid, 5~10wt% hydrogen peroxide, 5~10wt% ammonium persulfate, 5~10wt% diammonium phosphate, 1~5wt% triethylamine, 1~2wt% monoethanolamine, 1~2wt% weather resistance modifier, 0.5~1wt% corrosion inhibitor and 50~60wt% desalted water; The weather resistance modifier is sodium silicate, and the corrosion inhibitor is hydroxyethylidene diphosphonic acid.

2. Environmentally friendly bimetallic passivator production reactor, characterized in that: Included are: Bracket (1); A reaction tank (2) is fixedly connected to the support (1), and the top and bottom of the reaction tank (2) are respectively fixedly connected and communicated with a material injection pipe and a material discharge pipe; The exhaust pipes (3) have two portions, are fixedly connected and communicate with the reaction tank (2), and a blocking piston (4) is sealingly and slidably connected inside the exhaust pipes (3); There are two first elastic members (5), which are respectively arranged between adjacent exhaust pipes (3) and adjacent blocking pistons (4); A pressure sensor, arranged in the reaction tank (2), for detecting the gas pressure in the reaction tank (2); A stirring component, arranged on the reaction tank (2), and used for stirring the material in the reaction tank (2); A heating component is arranged in the reaction tank (2) and is used to heat the material in the reaction tank (2).

3. The environmentally friendly bimetallic passivator production reactor according to claim 2, characterized in that: The stirring assembly comprises: A fixing frame (21), fixedly connected to the reaction tank (2); A first motor (22) fixedly connected to the fixing frame (21); A rotating shaft (23) is sealed and rotatably connected to the interior of the reaction tank (2); an output shaft of the first motor (22) is fixedly connected to the rotating shaft (23); and a stirring frame (24) is fixedly connected to the rotating shaft (23); A transmission assembly is arranged on the reaction tank (2) and is used to switch the exhaust pipe (3) open.

4. The environmentally friendly bimetallic passivator production reactor according to claim 3, characterized in that: The transmission assembly comprises: A swivel (31) rotatably connected to the fixing frame (21); An extrusion ring (32) is fixedly connected to the inside of the rotating ring (31), and the two blocking pistons (4) are both in contact with the extrusion ring (32); A driving assembly is arranged on the fixing frame (21) and is used to drive the rotating ring (31) to rotate.

5. The environmentally friendly bimetallic passivator production reactor according to claim 4, characterized in that: The drive assembly comprises: A second motor (33) fixedly connected to the fixing frame (21); A first gear (34) fixedly connected to an output shaft of the second motor (33); The first gear ring (35) is fixedly connected to the rotating ring (31), and the first gear ring (35) is meshed with the first gear (34).

6. The environmentally friendly bimetallic passivator production reactor according to claim 3, characterized in that: The heating component comprises: A heat exchange inner shell (41) is sealed and rotatably connected to the interior of the reaction tank (2), and the heat exchange inner shell (41) cooperates with the reaction tank (2) to form a heat exchange cavity (42), and the reaction tank (2) is fixedly connected with an air inlet pipe and an air outlet pipe that are in communication with the heat exchange cavity (42); A plurality of heat exchange plates (43) are fixedly connected to the heat exchange inner shell (41); the heat exchange plates (43) are provided with inner cavities, and the inner cavities of all the heat exchange plates (43) are in communication with the heat exchange cavity (42); A rotating assembly is arranged in the reaction tank (2) and is used to drive the heat exchange inner shell (41) to rotate.

7. The environmentally friendly bimetallic passivator production reactor according to claim 5, characterized in that: The plurality of heat exchange plates (43) are evenly distributed circumferentially on circular tracks of different radii with the central axis of the heat exchange inner shell (41) as the central axis, and the heat exchange plates (43) on the circular tracks of different radii are staggered.

8. The environmentally friendly bimetallic passivator production reactor according to claim 6, characterized in that: The rotating assembly comprises: A second gear ring (44) is rotatably connected to the reaction tank (2), and the heat exchange inner shell (41) is fixedly connected to the second gear ring (44); A second gear (45) is rotatably connected to the reaction tank (2), and the second gear ring (44) is meshed with the second gear (45); The third gear (46) is fixedly connected to the rotating shaft (23), and the third gear (46) is meshed with the second gear (45).

9. The environmentally friendly bimetallic passivator production reactor according to claim 8, characterized in that: Also included are: A locking assembly is arranged on the reaction tank (2) and is used to quickly lock the rotating shaft (23), wherein the locking assembly comprises: There are a plurality of clamping blocks (51), all of which are fixedly connected to the rotating shaft (23) and are located outside the reaction tank (2); a limit block (52) slidably connected to the reaction tank (2), the limit block (52) limiting the rotation axis (23) through the clamping block (51), and a second elastic member (53) being provided between the limit block (52) and the reaction tank (2); A pushing component is arranged on the limiting block (52) and is used to push the limiting block (52) to slide.

10. The environmentally friendly bimetallic passivator production reactor according to claim 9, characterized in that: The pushing component comprises: A rotating member (54) fixedly connected to the first gear (34), wherein half of the circumference of the indexing circle of the first gear ring (35) is an integer multiple of the circumference of the indexing circle of the first gear (34); The push block (55) is fixedly connected to the limit block (52), and the rotating member (54) is used to press the push block (55).

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