Preheating chemical solution stirring equipment

Abstract

According to the preheating chemical solution stirring equipment disclosed by the invention, a sealing cover of the preheating chemical solution stirring equipment adopts a hopper-shaped design, so that hot steam in a tank is effectively guided to be collected to a steam collecting opening, and the steam collecting efficiency is improved; meanwhile, under the action of the heat preservation material, the hot steam is pressurized by the sucking pump and then divided into two parts, one part enters the heat dissipation pipe in the jacket for spiral heat dissipation, auxiliary heat preservation is provided for the tank body, and the energy utilization efficiency is remarkably improved; and the other part of the mixed solution enters the preheating pipe to preheat the feeding raw material, so that the heating time of the mixed solution is effectively shortened, and the heating efficiency is improved. In addition, the scraping plate driven by the stirring shaft can rotate to scrape materials deposited at the bottom of the tank, so that the materials are prevented from being bonded into blocks, and the product quality is ensured.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, and more specifically to a preheated chemical solution stirring device. Background Technology

[0002] In the preparation of highly dispersed hierarchical porous Ti-based SCR (selective catalytic reduction) catalysts, it is necessary to precisely add various raw material solvents into a mixing tank and carry out efficient stirring to ensure that all components are thoroughly and uniformly mixed. This step has a crucial impact on the pore structure, active site distribution, and final catalytic performance of the catalyst. However, in actual production processes, crystallization is prone to occur in the mixed solution at excessively low temperatures. This not only disrupts the homogeneity of the solution but also significantly reduces the quality of the subsequently prepared catalyst, thereby affecting its catalytic efficiency and stability.

[0003] To address these issues, current practices typically involve adding heating elements during the mixing process to raise the solution temperature and prevent crystallization. However, while effective, this method generates significant amounts of steam during the mixing and heating process. In traditional mixing tank designs, this steam is often directly vented through exhaust vents, resulting in substantial heat waste. Furthermore, the potentially harmful components and irritating odors contained in the steam can severely pollute the working environment, threatening the health of operators and increasing environmental remediation costs.

[0004] In view of the above problems, there is an urgent need for a chemical solution stirring device that can efficiently utilize the steam heat generated during the mixing process while effectively purifying steam emissions. This device should not only ensure thorough mixing of the raw material solvent but also possess good thermal insulation and environmental performance to meet the stringent requirements of preparing highly dispersed hierarchical porous Ti-based SCR catalysts. Therefore, this invention proposes a preheated chemical solution stirring device, aiming to solve the problems existing in the prior art, improve the efficiency and quality of catalyst preparation, and protect the working environment. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this application is to provide a preheated chemical solution stirring device to solve the problems mentioned in the background art.

[0006] According to one aspect of this application, a preheated chemical solution stirring device includes:

[0007] The tank body has a sealing cap at the top opening, and the sealing cap is fixed to the tank body by a snap-fit ​​structure.

[0008] The top of the sealing cap is provided with a steam collection port and multiple feed ports, and the feed ports are connected to the raw material solvent conveying pipeline.

[0009] The inner top surface of the sealing cover is a bucket-shaped design that tapers from all sides towards the steam collection port. A filter screen and a temperature detector are installed at the steam collection port. The filter screen is made of activated carbon.

[0010] The steam collection port is connected to the air inlet valve via a connecting pipe, and the air inlet valve is connected to the air pump.

[0011] The tank sidewall jacket is spirally provided with a heat dissipation pipe and an electric heating pipe. The electric heating pipe and the heat dissipation pipe are closely attached to the tank sidewall and are arranged alternately in the jacket. The air pump is connected to the air inlet at the upper end of the heat dissipation pipe and the air inlet at the preheating pipe. The preheating pipe is spirally wound on the feed pipe connected to the feed inlet.

[0012] The jacket is filled with high-temperature resistant insulation material, which is a composite silicate insulation material.

[0013] The exhaust port at the lower end of the heat dissipation pipe and the exhaust port of the preheating pipe are both connected to an exhaust valve and a condensate collection mechanism. The exhaust valve is connected to a tail gas collection device, and the tail gas collection device contains a neutralization solution.

[0014] The tank is equipped with a stirring device, which includes a stirring paddle and a stirring motor. The stirring paddle, which is vertically rotatably installed inside the tank, is powered by the stirring motor at the bottom of the tank.

[0015] The bottom of the tank is equipped with a scraper, which is coaxially fixed to the stirring shaft of the stirring paddle. The edge of the scraper is designed to be an arc shape that matches the shape of the bottom of the tank.

[0016] Preferably, the electric heating tubes on the side wall of the tank and the heating plate at the bottom of the tank can uniformly heat the solution inside the tank.

[0017] Preferably, the condensate collection mechanism is used for condensate collection and treatment.

[0018] Preferably, the neutralizing solution in the exhaust gas collection device can neutralize the harmful gases contained in the steam exhaust gas.

[0019] Preferably, the stirring motor drives the stirring paddle to rotate, which can accelerate the mixing efficiency of the solution.

[0020] Preferably, the stirring shaft drives the scraper to rotate, scraping and stirring the material deposited at the bottom of the tank.

[0021] The advantages of this application compared to existing technologies are:

[0022] 1. Preheating the raw materials using a preheating tube shortens the heating time of the mixed solution and improves heating efficiency.

[0023] 2. The exhaust gas is filtered and purified by the exhaust gas collection device, which effectively improves the working environment.

[0024] 3. The addition of a stirring device and a scraper ensures more uniform mixing of the solution and prevents materials from settling and clumping together at the bottom of the tank. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a preheated chemical solution stirring device according to an embodiment of this application.

[0026] Figure 2 This is a cross-sectional view of the sealing cover of a preheated chemical solution stirring device according to an embodiment of this application. Detailed Implementation

[0027] To make the content of this application easier to understand, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the accompanying drawings. Figure 1 In the context of direction, the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0028] like Figure 1 and Figure 2 As shown, a preheated chemical solution stirring device includes a tank 1, a sealing cover 2, a steam collection port 22, a feed port 21, a heat dissipation pipe 101, an electric heating pipe 102, a preheating pipe 212, high-temperature resistant insulation material, a stirring device, and a scraper 4, etc.

[0029] A sealing cover 2 is provided at the top opening of the tank body 1. The sealing cover 2 is fixed to the tank body 1 by a snap-fit ​​structure 24, facilitating maintenance, disassembly, and installation. The top of the sealing cover 2 is provided with a steam collection port 22 and multiple feed ports 21, which are connected to the raw material solvent conveying pipelines. The inner top surface of the sealing cover 2 has a bucket-shaped design that tapers towards the steam collection port 22 from all sides. A filter screen 23 and a temperature detector 26 are installed at the steam collection port 22. The filter screen 23 is made of activated carbon, which can effectively absorb impurities and irritating odors contained in the steam.

[0030] Steam collection port 22 is connected to air inlet valve 27 via connecting pipe 25, and air inlet valve 27 is connected to vacuum pump 28. A heat dissipation pipe 101 and an electric heating pipe 102 are spirally arranged downwards in the jacket 10 on the side wall of tank body 1. The electric heating pipe 102 and heat dissipation pipe 101 are tightly attached to the side wall of tank body 1 and are arranged in an alternating pattern within the jacket 10. Vacuum pump 28 is connected to the air inlet at the upper end of heat dissipation pipe 101 and the air inlet end of preheating pipe 212, respectively. Preheating pipe 212 is spirally wound around the feed pipe 211 connected to feed inlet 21. The jacket 10 is filled with high-temperature resistant insulation material, using composite silicate insulation material.

[0031] The exhaust port at the lower end of the heat dissipation pipe 101 and the exhaust end of the preheating pipe 212 are both connected to the exhaust valve 6 and the condensate collection mechanism 5. The condensate collection mechanism 5 is used for condensate collection and treatment. The exhaust valve 6 is connected to the exhaust gas collection device 61. The exhaust gas collection device 61 is equipped with a neutralization solution, which can neutralize the harmful gases contained in the steam exhaust gas, thereby effectively filtering and purifying the exhaust gas.

[0032] The tank 1 is equipped with a stirring device, including a stirring paddle 3 and a stirring motor 31. The stirring paddle 3, which is vertically rotated inside the tank, is powered by the stirring motor 31 located at the bottom of the tank 1. The stirring motor 31 drives the stirring paddle 3 to rotate, which can accelerate the mixing efficiency of the solution and make the solution more uniformly mixed.

[0033] A scraper 4 is provided at the bottom of the tank body 1, and the scraper 4 is coaxially fixed to the stirring shaft of the stirring paddle 3. The edge of the scraper 4 is designed to be arc-shaped to match the shape of the bottom of the tank body 1. The stirring shaft drives the scraper 4 to rotate, scraping and stirring the material deposited at the bottom of the tank body 1, preventing the material from settling at the bottom of the tank and sticking together, thus affecting product quality.

[0034] When using this invention, the raw material solvent is introduced into the tank through the feed inlet 21 and stirred evenly by the stirring device. The electric heating tube 102 and the heating plate uniformly heat the solution in the tank 1. Simultaneously, the high-temperature steam generated during solution mixing, under the pressure of the vacuum pump 28, partially enters the heat dissipation pipe 101 in the jacket 10, where it spirals downwards to dissipate heat, effectively utilizing the residual heat of the steam to provide auxiliary insulation for the tank 1 and improve energy efficiency. The other portion enters the preheating pipe 212 to preheat the raw material in the feed pipe 211, thereby shortening the heating time of the mixed solution and improving heating efficiency.

[0035] The above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, without departing from the spirit and scope defined by the claims of this application.

Claims

1. A preheated chemical solution stirring device, characterized by, The utility model relates to a kind of steam stripping device, including: Tank body (1), the tank body (1) top opening is covered with sealing cover (2), the sealing cover (2) is fixed on tank body (1) by buckle structure (24); The sealing cover (2) top is equipped with steam collection port (22) and multiple feed ports (21), the feed port (21) is connected with raw material solvent feed pipe; The inner top surface of the sealing cover (2) is designed as a bucket type with the steam collection port (22) shrinking from the periphery, a filter screen (23) and a temperature detector (26) are installed at the steam collection port (22), and the filter screen (23) is an activated carbon filter plate; The steam collection port (22) is connected with an air inlet valve (27) through a connecting pipe (25), and the air inlet valve (27) is connected with an air suction pump (28); The jacket (10) of the side wall of the tank body (1) is spirally provided with a heat dissipation pipe (101) and an electric heating pipe (102) downward, the electric heating pipe (102) and the heat dissipation pipe (101) are closely arranged in the jacket (10) in a staggered disc manner, the air suction pump (28) is connected with the air inlet of the upper end of the heat dissipation pipe (101) and the air inlet end of the pre-heating pipe (212) respectively, and the pre-heating pipe (212) is spirally arranged on the feed pipe (211) connected with the feed port (21); The jacket (10) is filled with a high-temperature-resistant thermal insulation material, and the high-temperature-resistant thermal insulation material is a composite silicate thermal insulation material; The exhaust outlet of the lower end of the heat dissipation pipe (101) and the exhaust outlet end of the pre-heating pipe (212) are connected with an exhaust valve (6) and a condensed water collecting mechanism (5), the exhaust valve (6) is connected with a tail gas collecting device (61), and the tail gas collecting device (61) is internally provided with a neutralizing solution; The tank body (1) is provided with a stirring device, the stirring device includes a stirring paddle (3) and a stirring motor (31), the stirring paddle (3) is vertically rotatably installed in the tank and is connected with the stirring motor (31) at the bottom of the tank body (1) in power connection; The tank body (1) is provided with a scraping plate (4), the scraping plate (4) is coaxially fixed on the stirring shaft of the stirring paddle (3), and the edge of the scraping plate (4) is designed as an arc shape matched with the shape of the bottom of the tank body (1).

2. A preheated chemical solution agitator apparatus as claimed in claim 1, wherein, The electric heating pipe (102) of the side wall of the tank body (1) and the heating plate at the bottom of the tank body (1) can uniformly heat and warm the solution in the tank body (1).

3. A preheated chemical solution agitator apparatus as claimed in claim 1, wherein, The condensed water collecting mechanism (5) is used for collecting and treating condensed water.

4. A preheated chemical solution agitator apparatus as claimed in claim 1, wherein, The neutralizing solution in the tail gas collecting device (61) can react with harmful gases contained in steam tail gas.

5. A preheated chemical solution agitator apparatus as claimed in claim 1, wherein, The rotation of the stirring paddle (3) driven by the stirring motor (31) can accelerate the mixing efficiency of the solution.

6. A preheated chemical solution agitator apparatus as claimed in claim 1, wherein, The rotation of the scraping plate (4) driven by the stirring shaft can stir the material deposited at the bottom of the tank body (1).

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