Efficient feeding device of acid-containing reaction kettle

Abstract

The utility model relates to the technical field of humic acid production, in particular to an efficient feeding device of an acid-containing reaction kettle. The efficient feeding device of the acid-containing reaction kettle comprises a reaction kettle and a premixing kettle, the premixing kettle is connected with the reaction kettle through a feeding pump, the reaction kettle is connected with an acid liquor recovery tank through a primary filter, the acid liquor recovery tank is connected with a liquor preparation tank through a secondary filter, a flushing scraper is arranged in the reaction kettle, and a feeding port is formed in the premixing kettle. According to the device, the premixing kettle and the reaction kettle are reasonably arranged, and structures such as the acid liquor spraying disc are matched, so that the accumulation of acid mist at the feeding hole can be effectively reduced. The acid liquor spraying disc in the premixing kettle can be used for carrying out primary treatment on materials, so that the materials entering the reaction kettle are more uniform, the generation of acid mist is reduced, the problems of low blanking speed and blockage are solved, and the reaction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of humic acid production technology, specifically to a high-efficiency feeding device for an acid-containing reactor. Background Technology

[0002] Humic acid is a mixture of organic macromolecules widely found in nature, mainly formed from the decomposition and synthesis of plant and animal residues under microbial and geochemical processes. In agriculture, humic acid exhibits many excellent properties due to its unique chemical structure and characteristics. It not only improves soil structure and enhances soil water and fertilizer retention capacity, but also stimulates plant growth and improves crop resistance, significantly contributing to increased yield and quality of agricultural products. In industry, humic acid also has wide applications, such as as a mud treatment agent in oil extraction and as a flocculant and adsorbent in water treatment.

[0003] In the production of humic acid, existing reactor feeding devices have several problems. Due to the high temperature during reactor production, a large amount of acid mist is generated, which accumulates at the reactor's inlet. During secondary feeding, this mist accumulation often slows down the feeding rate or even causes blockages, significantly reducing reaction efficiency. Furthermore, if the reactor is simply cleaned after production and then put back into operation, incomplete cleaning often affects the quality of subsequent products, failing to meet the demands of high-quality production. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a high-efficiency feeding device for acid-containing reactors. Through the rational arrangement of the premixing vessel and the reactor, and the coordination of structures such as the acid spray plate, the accumulation of acid mist at the feed inlet can be effectively reduced. The acid spray plate in the premixing vessel can perform preliminary treatment on the material, making the material entering the reactor more uniform, reducing the generation of acid mist, thereby solving the problems of slow feeding speed and blockage, and improving reaction efficiency.

[0005] This utility model is achieved using the following technical solution:

[0006] The aforementioned high-efficiency feeding device for acid-containing reactors includes a reactor and a premixing vessel. The premixing vessel is connected to the reactor via a feed pump. The reactor is connected to an acid recovery tank via a primary filter. The acid recovery tank is connected to a mixing tank via a secondary filter. The reactor is equipped with a rinsing scraper, and the premixing vessel is equipped with a feed inlet.

[0007] The reactor contains a stirring impeller driven by a stirring motor, a rinsing scraper, and a rinsing spray plate. It is surrounded by an insulation jacket and has an obtuse-angled discharge device at the bottom. The stirring impeller ensures thorough mixing of the materials during the reaction, the insulation jacket maintains the reaction temperature, the rinsing scraper and spray plate work together to achieve efficient cleaning of the reactor, and the obtuse-angled discharge device facilitates smooth material discharge, ensuring the smooth progress of both the reaction and cleaning processes.

[0008] The premixing vessel is equipped with a premixing vessel stirring paddle inside, an acid spray plate is provided above the premixing vessel stirring paddle, and a heat insulation layer is provided on the outside of the premixing vessel.

[0009] The premixing vessel is equipped with a stirring paddle and an acid spray plate inside, and has an insulation layer on the outside. The stirring paddle ensures thorough mixing of the materials and acid, the acid spray plate evenly disperses the acid in the materials, and the insulation layer ensures temperature stability during the premixing process, thereby improving the premixing effect and providing a good material foundation for subsequent reactions.

[0010] The mixing tank is connected to an acid storage tank, which is connected to an acid spraying plate via a pipeline. The mixing tank serves to adjust the acid concentration and store the acid, providing the premixing kettle with an acid solution of appropriate concentration to ensure the smooth operation of the premixing process.

[0011] The reactor is equipped with a stirring paddle driven by a stirring motor inside, an insulation sleeve on the outside of the reactor, and an obtuse angle discharge device at the bottom of the reactor, which is connected to the primary filter through a pipe.

[0012] The rinsing scraper is equipped with a rinsing spray plate above it, and a rinsing water pipe is connected to the rinsing spray plate. A cylinder is connected to the rinsing scraper.

[0013] The rinsing scraper is equipped with a water outlet and a scraper blade, with the scraper blade located outside the water outlet. The rinsing scraper is connected to the rinsing water pipe.

[0014] The primary filter is equipped with a primary screen inside. The lower part of the primary screen is connected to the top of the acid recovery tank via a pipe, and the bottom of the acid recovery tank is connected to the primary filter via a return pipe.

[0015] The primary filter contains a primary screen, which is connected to the top of the acid recovery tank via a pipe. The bottom of the acid recovery tank is connected to the primary filter via a return pipe. The primary screen can initially filter impurities in the discharge, and the return pipe allows incompletely filtered acid to be filtered again, improving the filtration effect and achieving initial acid recovery.

[0016] The secondary filter is equipped with a filter plate inside. An inlet pipe connects the acid recovery tank to the secondary filter, with the connection point between the inlet pipe and the secondary filter located below the filter plate. The filter plate further purifies the acid, ensuring the quality of the recovered acid and enabling its recycling.

[0017] The working principle of this utility model is as follows:

[0018] The material enters the premixing vessel through the feed inlet. Acid from the acid storage tank flows through a pipeline to the mixing tank, and then from the mixing tank, it is piped to the acid spray plate above the premixing vessel. The premixing vessel's agitator is activated to mix the material and acid. The agitation speed is set at 100-150 rpm to ensure thorough mixing. The insulation layer on the outside of the premixing vessel maintains the premixing temperature at approximately 40-50°C. This is because within this temperature range, the chemical reactivity of the material and acid is moderate, ensuring uniform mixing while preventing material deterioration or excessively vigorous reactions due to high temperatures. To ensure uniform premixing, the premixing time is generally controlled between 15-30 minutes.

[0019] The premixed materials are pumped into the reactor via a feed pump. The reactor's agitator, driven by a stirring motor, further agitates the materials. The stirring speed is set at 80-120 rpm to ensure sufficient flow of the materials within the reactor, guaranteeing adequate contact and reaction between the reactants. An insulation jacket on the outside of the reactor maintains the reaction temperature at approximately 80-90℃. This temperature range is beneficial for humic acid production, accelerating the reaction rate while ensuring selectivity and yield. The reaction time is controlled at 4-6 hours. After the reaction is complete, the material is discharged from the reactor through an obtuse-angle discharge device and enters the primary filter. The primary filter's internal screen performs preliminary filtration, removing larger particles. The filtered acid then enters the acid recovery tank. The pore size of the primary screen is typically set at 0.5-1mm to effectively intercept larger particles. The acid in the acid recovery tank enters the secondary filter through a pipeline. The secondary filter's internal filter plates further filter the acid, obtaining a relatively pure acid solution, which is then recycled into the mixing tank. The filtration accuracy of the filter plate is generally 0.1-0.3mm to ensure that the purity of the acid solution meets the requirements of subsequent production.

[0020] After the reaction is complete, rinsing water enters the rinsing spray plate through the rinsing water pipe and is evenly sprayed inside the reactor. A cylinder drives the rinsing scraper to move along the inner wall of the reactor. The pressure of the rinsing water is controlled at 0.3-0.5 MPa to ensure that the rinsing water fully covers the inner wall of the reactor and has sufficient impact force to remove adhering impurities. The moving speed of the cylinder-driven rinsing scraper is controlled at 0.1-0.2 m / s, allowing the scraper to effectively remove impurities adhering to the inner wall of the reactor. The rinsing water and impurities are discharged through the outlet, ensuring the reactor is thoroughly cleaned and ready for the next production run.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] (1) Through the reasonable arrangement of the premixing vessel and the reaction vessel, as well as the cooperation of structures such as the acid spray plate, this device can effectively reduce the accumulation of acid mist at the feed inlet. The acid spray plate in the premixing vessel can perform preliminary treatment on the material, making the material entering the reaction vessel more uniform and reducing the generation of acid mist, thereby solving the problems of slow feeding speed and blockage, and improving the reaction efficiency.

[0023] (2) The internal structure of the reactor, including the rinsing scraper, rinsing spray plate, and related cylinders, enables efficient cleaning of the reactor interior. The rinsing spray plate provides rinsing water, and the cylinder drives the rinsing scraper to perform scraping. The design of the scraper and water outlet further enhances the cleaning effect, ensuring thorough cleaning of the reactor and avoiding product quality degradation caused by incomplete cleaning, thus improving product quality.

[0024] (3) By setting up a primary filter, a secondary filter, and an acid recovery tank, the acid is recycled. The primary filter initially filters out impurities in the reactor output, the acid recovery tank stores the filtered acid, and the secondary filter further purifies the acid, allowing it to return to the mixing tank to participate in the reaction, thus saving production costs and improving resource utilization. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the high-efficiency feeding device for the acid-containing reactor of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the rinsing scraper of this utility model;

[0027] In the diagram: 1. Reactor; 2. Premixing vessel; 3. Acid storage tank; 4. Primary filter; 5. Acid recovery tank; 6. Secondary filter; 7. Mixing tank; 8. Feed inlet; 9. Acid spray plate; 10. Premixing vessel agitator; 11. Rinsing spray plate; 12. Rinsing scraper; 13. Cylinder; 14. Rinsing water pipe; 15. Pipe leading to secondary filter; 16. Filter plate; 17. Return pipe; 18. Reactor agitator; 19. Obtuse angle discharge device; 20. Water outlet; 21. Scraper. Detailed Implementation

[0028] To make the objectives and technical solutions of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] like Figure 1 As shown, the high-efficiency feeding device for the acid-containing reactor includes a reactor 1 and a premixing reactor 2. The premixing reactor 2 is connected to the reactor 1 via a feed pump. The reactor 1 is connected to the acid recovery tank 5 via a primary filter 4. The acid recovery tank 5 is connected to the mixing tank 7 via a secondary filter 6. The reactor 1 is equipped with a rinsing scraper 12, and the premixing reactor 2 is equipped with a feed inlet 8. The premixing reactor 2 is equipped with a premixing impeller 10 inside, and an acid spray plate 9 is located above the impeller 10. The premixing reactor 2 is equipped with an insulation layer on the outside. The premixing reactor 2: The impeller 10 and the acid spray plate 9 are located inside, and an insulation layer is located on the outside. The impeller in the premixing reactor 2 ensures thorough mixing of the material and the acid, the acid spray plate 9 evenly disperses the acid in the material, and the insulation layer ensures temperature stability during the premixing process, thereby improving the premixing effect and providing a good material foundation for subsequent reactions. The mixing tank 7 is connected to an acid storage tank 3, and the mixing tank 7 is connected to the acid spray plate 9 via a pipeline. The reactor 1 is equipped with an agitator 18 driven by a stirring motor inside. An insulation jacket is installed on the outside of the reactor 1. An obtuse-angle discharge device 19 is located below the reactor 1, connected to the primary filter 4 via a pipe. A rinsing spray plate 11 is located above the rinsing scraper 12, with a rinsing water pipe 14 connected to the spray plate 11. A cylinder 13 is connected to the rinsing scraper 12. Figure 2 As shown, the rinsing scraper 12 is equipped with a water outlet 20 and a scraper blade 21. The scraper blade 21 is located outside the water outlet 20. The rinsing scraper 12 is connected to the rinsing water pipe 14. The primary filter 4 has a primary screen inside. The lower part of the primary screen is connected to the top of the acid recovery tank 5 through a pipe. The bottom of the acid recovery tank 5 is connected to the primary filter 4 through a return pipe 17. The secondary filter 6 has a filter plate 16 inside. An inlet pipe 15 is provided between the acid recovery tank 5 and the secondary filter 6. The connection between the inlet pipe 15 and the secondary filter 6 is located below the filter plate 16.

[0031] The above-mentioned high-efficiency feeding device for acid-containing reactors includes the following steps during operation:

[0032] (1) The material enters the premixing tank 2 through the feed inlet 8. The acid in the acid storage tank 3 first flows into the mixing tank 7, and then is transported to the acid spray plate 9 above the premixing tank 2 through the pipeline. The stirring paddle 10 of the premixing tank is started, and the stirring speed is adjusted according to the material characteristics. The material is premixed at 40-50℃ for 15-30 minutes to ensure that the material and acid are evenly mixed. The premixed material is sent to the reactor 1 by the feed pump. The stirring paddle 18 of the reactor is further stirred under the drive of the stirring motor. The stirring speed is usually set to 80-120 rpm. The insulation jacket of the reactor 1 maintains the temperature at 80-90℃ to create conditions for the reaction. (2) In the reactor 1, the material undergoes the humic acid production reaction under the given temperature and stirring conditions for 4-6 hours. During this period, the pH value is controlled at 5-7. After the reaction is completed, the material is discharged through the obtuse angle discharge device 19 and enters the primary filter 4. The primary screen intercepts larger particulate impurities. The filtered acid flows into the acid recovery tank 5. Acid solution enters secondary filter 6 from acid recovery tank 5 via secondary filter pipe 15. Filter plate 16 further purifies the acid solution, and the purified acid solution enters mixing tank 7 for recycling. (3) After the reaction is completed, rinsing water enters rinsing spray plate 11 through rinsing water pipe 14 at a pressure of 0.3-0.5MPa and is evenly sprayed inside reactor 1. Cylinder 13 drives rinsing scraper 12 to move on the inner wall of reactor 1 at a speed of 0.1-0.2m / s. Scraper 21 scrapes off impurities, and rinsing water and impurities are discharged through outlet 20, cleaning the reactor and preparing it for the next production.

Claims

1. A high-efficiency feeding device for an acid-containing reactor, characterized in that, It includes a reaction vessel (1) and a premixing vessel (2). The premixing vessel (2) is connected to the reaction vessel (1) via a feed pump. The reaction vessel (1) is connected to the acid recovery tank (5) via a primary filter (4). The acid recovery tank (5) is connected to the liquid preparation tank (7) via a secondary filter (6). The reaction vessel (1) is equipped with a rinsing scraper (12). The premixing vessel (2) is equipped with a feed inlet (8).

2. The high-efficiency feeding device for an acid-containing reactor according to claim 1, characterized in that, The premixing vessel (2) is equipped with a premixing vessel stirring paddle (10) inside, an acid spray plate (9) is provided above the premixing vessel stirring paddle (10), and a heat insulation layer is provided on the outside of the premixing vessel (2).

3. The high-efficiency feeding device for an acid-containing reactor according to claim 2, characterized in that, The solution mixing tank (7) is connected to an acid storage tank (3), and the solution mixing tank (7) is connected to an acid spraying plate (9) through a pipe.

4. The high-efficiency feeding device for an acid-containing reactor according to claim 1, characterized in that, The reactor (1) is equipped with a stirring paddle (18) driven by a stirring motor inside, and a heat insulation sleeve is provided on the outside of the reactor (1). An obtuse angle discharge device (19) is provided below the reactor (1). The obtuse angle discharge device (19) is connected to the primary filter (4) through a pipe.

5. The high-efficiency feeding device for an acid-containing reactor according to claim 1, characterized in that, A rinsing spray plate (11) is provided above the rinsing scraper (12), a rinsing water pipe (14) is connected to the rinsing spray plate (11), and a cylinder (13) is connected to the rinsing scraper (12).

6. The high-efficiency feeding device for an acid-containing reactor according to claim 5, characterized in that, The flushing scraper (12) is provided with a water outlet (20) and a scraper (21). The scraper (21) is located outside the water outlet (20). The flushing scraper (12) is connected to the flushing water pipe (14).

7. The high-efficiency feeding device for an acid-containing reactor according to claim 1, characterized in that, The primary filter (4) is equipped with a primary screen inside. The lower part of the primary screen is connected to the upper part of the acid recovery tank (5) through a pipe. The bottom of the acid recovery tank (5) is connected to the primary filter (4) through a return pipe (17).

8. The high-efficiency feeding device for an acid-containing reactor according to claim 1, characterized in that, The secondary filter (6) is equipped with a filter plate (16) inside. An inlet pipe (15) is provided between the acid recovery tank (5) and the secondary filter (6). The connection between the inlet pipe (15) and the secondary filter (6) is located below the filter plate (16).

Images