Fluorine-containing liquid accelerator reaction kettle

Abstract

The utility model discloses a fluorine-containing liquid accelerator reaction kettle. The fluorine-containing liquid accelerator reaction kettle comprises a kettle body, a cover plate, a stirrer, a cold air inlet pipe and a hot air outlet pipe, the cover plate covers the kettle body and is fixedly connected with the kettle body; the cold air inlet pipe is communicated with the accommodating cavity of the kettle body; the hot air outlet pipe is also communicated with the accommodating cavity pipeline of the kettle body; the joint of the cold air inlet pipe and the kettle body is lower than the joint of the hot air outlet pipe and the kettle body; the kettle body is prepared from reinforced plastic. The kettle body prepared from the reinforced plastic has higher corrosion resistance, and can resist corrosion of reactants and reaction products of an acidic accelerator containing fluorine ions in the production process; the cold air inlet pipe and the hot air outlet pipe are arranged, so that air in the kettle body can flow, heat generated by reaction can be taken away in time, heat is effectively dissipated to prevent heat accumulation from aggravating equipment perforation, and leakage of reactants or reaction products is also avoided.

Description

Technical Field

[0001] The utility model relates to the field of chemical reagent manufacturing, in particular to a reaction kettle. Background Art

[0002] When a fluoride-containing acidic liquid accelerator is rapidly mixed with cement paste, the fluoride ions in the accelerator cause the gypsum component in the cement paste to quickly lose its retarding effect, causing it to set rapidly. Simultaneously, the acidic substances in the accelerator react with the alkaline substances in the cement paste, releasing a large amount of heat and accelerating the setting of the cement paste.

[0003] During the production process, fluoride-containing acidic liquid accelerators are prepared using fluorosilicic acid, sodium metaaluminate, organic alcohol amines, aluminum sulfate, aluminum hydroxide, and water as raw materials. The strong acidity of fluorosilicic acid and the slightly alkaline organic alcohol amines, sodium metaaluminate, and aluminum hydroxide are mixed, dissolved, and reacted in water. This reaction releases a large amount of heat. Due to the small atomic radius of fluorine and its active properties, and due to the temperature increase during the production process and the cooling process after the reaction, residual fluoride in the reactants and reaction products can exacerbate corrosion of the reaction equipment and its accessories. As a result, conventional fluoride-containing acidic liquid accelerator reaction equipment often suffers from equipment perforation and leakage of reactants or reaction products. Utility Model Content

[0004] Based on this, it is necessary to provide a fluorine-containing liquid accelerating setting agent reactor with good heat dissipation effect and low corrosion resistance.

[0005] The technical solution of the utility model is as follows:

[0006] A fluorine-containing liquid quick-setting agent reactor, comprising a reactor body, a cover plate and an agitator, wherein the cover plate is fitted over the reactor body and fixedly and sealed therewith; the reactor body has a receiving cavity, the agitator is arranged in the receiving cavity of the reactor body and connected to the reactor body; the reactor also comprises a cold air inlet pipe and a hot air outlet pipe; the cold air inlet pipe is connected to the receiving cavity of the reactor body; the hot air outlet pipe is also connected to the receiving cavity pipeline of the reactor body, and the interface height between the cold air inlet pipe and the reactor body is lower than the interface height between the hot air outlet pipe and the reactor body; the reactor body is made of polypropylene or fiber reinforced plastic.

[0007] Optionally, the cold air inlet pipe and the hot air outlet pipe are arranged on both sides of the kettle body opposite to each other.

[0008] Optionally, the cover plate includes a cover plate body and a baffle, wherein the baffle is arranged on a side of the cover plate body close to the kettle body, and the baffle protrudes from the cover plate body and is fixedly connected to the cover plate body.

[0009] Optionally, the axis of the baffle is perpendicular to a line connecting the center of the interface between the cold air inlet pipe and the kettle body and the center of the interface between the hot air outlet pipe and the kettle body.

[0010] Optionally, a feeding port is opened on the cover body, and the feeding port is opened on the side of the cover body close to the hot air outlet pipe, the baffle is arranged on the side of the feeding port away from the hot air outlet pipe, and the distance between the baffle and the hot air outlet pipe is smaller than the distance between the baffle and the cold air inlet pipe.

[0011] Optionally, a spoiler throat is provided on the baffle, and a plurality of the spoiler throats are provided, and adjacent spoiler throats are evenly spaced.

[0012] Optionally, the inner diameter of the interface between the cold air inlet pipe and the kettle body is larger than the inner diameter of the interface between the hot air outlet pipe and the kettle body.

[0013] Optionally, the cold air inlet pipe includes an inlet pipe body, a bag net and a check valve; the inlet of the inlet pipe body is an oblique mouth that is longer at the top and shorter at the bottom, the bag net is sleeved on the inlet of the inlet pipe body, the inlet of the inlet pipe body is connected to the external atmospheric environment, and the outlet of the inlet pipe body is connected to the kettle body; the check valve is embedded in the inlet pipe body and fixedly connected to it.

[0014] Optionally, the cold air inlet duct also includes an air inlet manifold; the air inlet manifold includes a manifold body and an air inlet fan; the inlet of the manifold body is connected to the external atmospheric environment or an external cold air source, and the outlet of the manifold body is connected to the air inlet duct body; the air inlet fan is embedded in the manifold body and fixedly connected thereto.

[0015] Optionally, the inlet of the hot air outlet pipe is connected to the kettle body, the height of the outlet of the hot air outlet pipe is higher than the height of the inlet of the air inlet pipe body, and the outlet of the air outlet pipe is connected to the external atmospheric environment or an external exhaust gas absorption tower.

[0016] Advantages of the technical solution of the present invention: The kettle body made of reinforced plastic has stronger corrosion resistance and can resist the corrosion of the kettle body by the reactants and reaction products during the production process of the acidic liquid accelerator containing fluorine ions; it can promptly remove the heat generated by the reaction and effectively dissipate heat to avoid heat accumulation that aggravates equipment perforation, and at the same time prevent the leakage of reactants or reaction products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a fluorine-containing liquid accelerating setting agent reactor provided in one embodiment.

[0019] Figure 2 The figure is a schematic structural diagram of a cover plate in a reactor for a fluorine-containing liquid quick-setting agent provided in one embodiment.

[0020] The names and serial numbers of the components in the figure are: 1. Kettle body; 2. Cover plate; 3. Cold air inlet pipe; 4. Hot air outlet pipe; 21. Cover plate body; 22. Baffle; 23. Feeding port; 221. Turbine gate; 31. Interface between cold air inlet pipe and kettle body; 41. Interface between hot air outlet pipe and kettle body; 32. Air inlet pipe body; 33. Bag net; 34. Check valve; 35. Air inlet manifold; 351. Manifold body; 352. Air inlet fan.

[0021] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the descriptions of "first", "second", etc. in this utility model are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0025] refer to Figure 1-2 ,

[0026] A fluorine-containing liquid accelerator reactor comprises a reactor body 1, a cover plate 2, an agitator (not shown), a cold air inlet pipe 3, and a hot air outlet pipe 4. The cover plate 2 covers the reactor body 1 and is fixedly and sealed therewith. The reactor body 1 has a receiving cavity, and the agitator is disposed in the receiving cavity of the reactor body 1 and is connected to the reactor body 1. The cold air inlet pipe 3 is connected to the receiving cavity of the reactor body 1; the hot air outlet pipe 4 is also connected to the receiving cavity pipeline of the reactor body 1. The height of the interface 31 between the cold air inlet pipe 3 and the reactor body 1 is lower than the height of the interface 41 between the hot air outlet pipe 4 and the reactor body 1. The reactor body 1 is made of reinforced plastic. The kettle body 1 is specifically made of polypropylene or FRP (fiber reinforced composite material). The reinforced plastic has excellent corrosion resistance. The reactants and reaction products are placed in the accommodating cavity of the kettle body 1 and are in direct contact with the kettle body 1. The corrosion resistance of the reinforced plastic will help the kettle body 1 effectively resist and avoid being corroded by the reactants or reaction products. During specific manufacturing, the inner diameter of the kettle body 1 is designed to be 1.2 to 1.4 times the depth of the kettle body 1, that is, a waist-thick short kettle body 1 is selected, and a metal or nylon protective hoop is hooped every 30 cm from top to bottom on the outside of the kettle body 1 to reduce the outward tension of the kettle body 1. Since the acidic liquid quick-setting agent containing fluorine ions generates a large amount of heat during the acid-base neutralization reaction during the production process, the reactor provided in this specific embodiment is also provided with a cold air inlet pipe 3 and a hot air outlet pipe 4. There is a circulated gas inside the reactor body 1. These gases fill the gap between the liquid surface and the cover plate 2. The reactants in the reactor body 1 react to generate heat. The liquid and the gas exchange heat, the gas becomes hot, the hot gas rises, and escapes from the hot gas outlet pipe 4. The cold air enters the reactor body along the cold air inlet pipe 3. The reaction continues, and the above-mentioned hot air escape-cold air replenishment process will be carried out spontaneously and continuously. Moreover, due to the interface 3 between the cold air inlet pipe 3 and the reactor body 1, the hot air will continue to escape from the hot air outlet pipe 4. 1 is lower than the height of the interface 41 between the hot gas outlet pipe 4 and the kettle body 1, and the temperature in the kettle body 1 is significantly higher than the external environment. In specific implementation, the hot gas outlet pipe 4 can be set to a height of not less than 15 meters. Based on the "chimney" effect, the rising speed of the hot gas in the hot gas outlet pipe 4 is accelerated, the suction force on the gas in the kettle body 1 is increased, the hot air escapes quickly, and more cold air is continuously sucked into the kettle body 1 from the cold air inlet pipe 3 set at a lower position. With the assistance of the agitator, heat and cold exchange is quickly formed between the liquid surface of the material in the kettle body 1 and the air layer. The cold air flows quickly to take away the heat on the surface of the liquid material, thereby completing the rapid cooling of the high-temperature liquid quick-setting agent in the reactor.

[0027] In this embodiment, the cold air inlet pipe 3 and the hot air outlet pipe 4 are arranged oppositely on both sides of the kettle body 1. Keeping the cold air inlet pipe 3 and the hot air outlet pipe 4 oppositely arranged on both sides of the kettle body 1 can maximize the flow distance of the gas in the kettle body 1, ensure that the reactants are in full contact with the gas entering the kettle body 1, and maximize heat exchange.

[0028] In this embodiment, the cover plate 2 includes a cover plate body 21 and a baffle 22. The baffle 22 is disposed on a side of the cover plate body 21 near the kettle body 1, protruding from the cover plate body 21 and fixedly connected to the cover plate body 21. Since the baffle 22 protrudes from the cover plate body 21, the gas entering the cold air inlet pipe 3 must bypass the baffle 22 before escaping from the hot air outlet pipe 4. The baffle 22 not only acts as a flow disruptor, but also prevents the formation of a passage between the cold air inlet end and the hot air outlet end, thereby preventing the cold air from entering the kettle body 1 through the cold air inlet pipe 3 and escaping directly from the hot air outlet pipe 4. On the other hand, the baffle 22 can also be used to separate the cold air zone from the hot air zone, thereby forming a pressure difference between the two sides of the baffle 22 within the receiving chamber of the kettle body 1, driving the gas inside the kettle body 1 to flow rapidly from the cold air inlet pipe 3 to the hot air outlet pipe 4, further improving the heat dissipation efficiency.

[0029] In this specific embodiment, the axis of the baffle 22 is perpendicular to the line connecting the center of the interface 31 between the cold air inlet pipe 3 and the kettle body 1 and the center of the interface 41 between the hot air outlet pipe 4 and the kettle body 1 .

[0030] In this embodiment, a feeding port 23 is provided on the cover body 21, and the feeding port 23 is provided on a side of the cover body 21 near the hot air outlet pipe 4. The feeding port 23 is used to feed the reactants required for production as needed. In a specific implementation, a feeding cover can be added to the feeding port 23 to cover the feeding port 23 to prevent the reactants or reaction products from splashing out. The baffle 22 is provided on the side of the feeding port 23 away from the hot air outlet pipe 4, and the distance between the baffle 22 and the hot air outlet pipe 4 is smaller than the distance between the baffle 22 and the cold air inlet pipe 3. In this way, the interior of the kettle body 1 is divided by the baffle 22 to form a pattern of a smaller hot air area and a larger cold air area. The feeding port 23 is completely located on the side of the smaller hot air area, and the pressure difference between the interior of the kettle body 1 and the two sides of the baffle 22 is more obvious, which helps to enhance the "chimney effect" and facilitates the rapid escape of gas from the kettle body 1.

[0031] In this specific embodiment, the baffle 22 is provided with a plurality of flow-disrupting constrictions 221, with adjacent flow-disrupting constrictions 221 evenly spaced. The baffle 22 is fixedly connected at both ends to the inner wall of the kettle body 1, and the flow-disrupting constrictions 221 are provided at the lower edge of the baffle 22. The protruding "concave-convex" shape of the flow-disrupting constrictions 221 can, on the one hand, prevent the liquid in the kettle body 1 from overflowing due to the relatively closed environment when the liquid level suddenly rises during the reaction process. On the other hand, while leaving a gas flow channel, it further disrupts the flow of gas, further promoting sufficient contact between the gas and the liquid surface inside the kettle body 1 and sufficient heat exchange.

[0032] In this specific embodiment, the inner diameter of the interface 31 between the cold air inlet pipe 3 and the kettle body 1 is larger than the inner diameter of the interface 41 between the hot air outlet pipe 4 and the kettle body 1. The diameter of the cold air inlet pipe 3 is set to be approximately 30-40 cm, and the diameter of the hot air outlet pipe 4 is set to be 60-80 cm. The height of the interface 31 between the cold air inlet pipe 3 and the kettle body 1 is approximately 5-8 cm lower than the interface 41 between the hot air outlet pipe 4 and the kettle body 1. The Bernoulli equation reveals the principle that when gas flows, the greater the flow rate, the lower the pressure. In this specific embodiment, the inner diameter of the interface 31 between the cold air inlet pipe 3 and the kettle body 1 is set to be larger than the inner diameter of the interface 41 between the hot air outlet pipe 4 and the kettle body 1. The gas flow rate at the hot air outlet pipe 4 with a smaller inner diameter will be faster and the air pressure will be lower. Gas with higher pressure in other parts of the kettle body 1 will tend to flow quickly to the hot air outlet pipe 4, carrying heat out with the gas, further improving the heat dissipation efficiency of the reactor.

[0033] In this embodiment, the cold air inlet duct 3 includes an inlet duct body 32, a bag net 33, and a check valve 34. The inlet of the inlet duct body 32 is formed into a slanted opening with a length at the top and a short at the bottom. The bag net 33 is sleeved onto the inlet of the inlet duct body 32. The inlet of the inlet duct body 32 is connected to the external atmosphere, while the outlet 31 of the inlet duct body 32 is connected to the kettle body 1. The check valve 34 is embedded in the inlet duct body 32 and fixedly connected thereto. The bag net 33 is used to filter dust and other impurities. The inlet of the inlet duct body 32 is formed into a slanted opening with a length at the top and a short at the bottom. The bag net 33 is sleeved onto the slanted opening with a length at the top and a short at the bottom. Dust and other impurities blocked by the bag net 33 fall naturally due to gravity. The slanted opening with a length at the top and a short at the bottom helps prevent the accumulation of impurities at the inlet of the inlet duct body 32.

[0034] In this specific embodiment, the cold air inlet duct 3 also includes an air inlet manifold 35; the air inlet manifold 35 includes a manifold body 351 and an air inlet fan 352; the inlet of the manifold body 351 is connected to the external atmospheric environment or an external cold air source, and the outlet of the manifold body 351 is connected to the air inlet duct body 32; the air inlet fan 352 is embedded in the manifold body 351 and fixedly connected thereto.

[0035] In this embodiment, the inlet 41 of the hot gas outlet pipe 4 is connected to the kettle body 1. The outlet of the hot gas outlet pipe 4 is higher than the inlet of the cold air inlet pipe 3, and the height of the hot gas outlet pipe 4 is not less than 15 meters. The outlet of the hot gas outlet pipe 4 is connected to the external atmosphere or an external exhaust gas absorption tower. Connecting the outlet of the hot gas outlet pipe 4 to the external exhaust gas absorption tower can centrally recover and treat the reaction waste gas, ensuring the environmental protection of the entire production process.

[0036] The above are only preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the utility model concept, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A fluorine-containing liquid quick-setting agent reaction kettle, comprising a kettle body, a cover plate, and an agitator, wherein the cover plate is fitted over the kettle body and is fixedly and sealedly connected thereto; the kettle body has a receiving cavity, and the agitator is disposed in the receiving cavity of the kettle body and connected to the kettle body; It is characterized by: It also includes a cold air inlet pipe and a hot air outlet pipe; the cold air inlet pipe is connected to the accommodating cavity of the kettle body; the hot air outlet pipe is also connected to the accommodating cavity pipeline of the kettle body, and the interface height between the cold air inlet pipe and the kettle body is lower than the interface height between the hot air outlet pipe and the kettle body; the kettle body is made of polypropylene or fiber reinforced plastic.

2. The fluorine-containing liquid accelerating setting agent reactor according to claim 1, characterized in that: The cold air inlet pipe and the hot air outlet pipe are arranged on two sides of the kettle body opposite to each other.

3. The fluorine-containing liquid accelerating setting agent reactor according to claim 1, characterized in that: The diameter of the hot air outlet pipe is larger than the diameter of the cold air inlet pipe.

4. The fluorine-containing liquid accelerating setting agent reactor according to claim 1, characterized in that: The cover plate includes a cover plate body and a baffle, wherein the baffle is arranged on a side of the cover plate body close to the kettle body, and the baffle protrudes downward from the cover plate body and is fixedly and sealedly connected to the cover plate body.

5. The fluorine-containing liquid accelerating setting agent reactor according to claim 4, characterized in that: The axis of the baffle is perpendicular to a line connecting the center of the interface between the cold air inlet pipe and the kettle body and the center of the interface between the hot air outlet pipe and the kettle body.

6. The fluorine-containing liquid accelerating setting agent reactor according to claim 5, characterized in that: A feeding port is provided on the cover body, and the feeding port is provided on a side of the cover body close to the hot air outlet pipe. The baffle is provided on a side of the feeding port away from the hot air outlet pipe, and the distance between the baffle and the hot air outlet pipe is smaller than the distance between the baffle and the cold air inlet pipe.

7. The fluorine-containing liquid accelerating setting agent reactor according to claim 6, characterized in that: The baffle plate is provided with a spoiler throat, a plurality of the spoiler throats are provided, and adjacent spoiler throats are evenly spaced.

8. The fluorine-containing liquid accelerating setting agent reactor according to claim 1, characterized in that: The inner diameter of the interface between the cold air inlet pipe and the kettle body is larger than the inner diameter of the interface between the hot air outlet pipe and the kettle body.

9. The fluorine-containing liquid accelerating setting agent reactor according to claim 1, characterized in that: The cold air inlet duct includes an air inlet duct body, a bag net and a check valve; the inlet of the air inlet duct body is an oblique mouth that is longer at the top and shorter at the bottom, and the bag net is sleeved on the inlet of the air inlet duct body. The inlet of the air inlet duct body is connected to the external atmospheric environment, and the outlet of the air inlet duct body is connected to the kettle body; the check valve is embedded in the air inlet duct body and fixedly connected thereto; the cold air inlet duct also includes an air inlet manifold; the air inlet manifold includes a manifold body and an air inlet fan; the inlet of the manifold body is connected to the external atmospheric environment or an external cold air source, and the outlet of the manifold body is connected to the air inlet duct body; the air inlet fan is embedded in the manifold body and fixedly connected thereto.

10. The fluorine-containing liquid accelerating setting agent reactor according to claim 9, characterized in that: The inlet of the hot air outlet pipe is connected to the kettle body, the outlet height of the hot air outlet pipe is higher than the inlet height of the cold air inlet pipe, and the outlet of the hot air outlet pipe is connected to the external atmospheric environment or an external tail gas absorption tower.

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