A production device for environmentally friendly stannous neodecanoate that can replace stannous octoate

Abstract

The utility model relates to the technical field of polyurethane catalysts, and in particular to an environmentally friendly stannous neodecanoate production device that can replace stannous octoate, comprising a reactor body and an exhaust gas collection device, wherein a reactor cover is installed on the top of the reactor body, a support column is fixedly connected to the bottom of the reactor body, a pipeline is arranged on the top of the exhaust gas collection device, an exhaust gas collection pipeline is arranged on the bottom, and the exhaust gas collection pipeline is connected to the exhaust gas collection pipeline through a flange plate flange, one end of the pipeline and the exhaust gas collection pipeline are mutually connected inside the exhaust gas collection device to form a continuous channel, and a butterfly damper is installed inside the exhaust gas collection pipeline. The utility model reduces the emission of harmful substances in the exhaust gas by grading the exhaust gas, and meets the environmental protection requirements. At the same time, since the exhaust gas treatment efficiency is improved, the possible energy consumption in the treatment process is also reduced, and the goal of energy saving and environmental protection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyurethane catalysts, in particular to a production device for environmentally friendly stannous neodecanoate which can replace stannous octoate. Background Art

[0002] As the application scenarios of polyurethane continue to expand, its output is also steadily increasing, which has driven the demand for metal catalysts, especially stannous octoate, to rise year by year. Stannous octoate, also known as tin octoate, has a chemical expression of C4H9Sn(OH)2. It is a type of organic tin compound, and its typical structure is a tin atom connected to two octanoic acid groups. This substance is a colorless to slightly yellow liquid in appearance, but it has certain toxicity. However, in recent years, polyurethane foams containing stannous octoate will be banned from certification because they have been added to the list of banned substances.

[0003] Stannous neodecanoate, with the chemical formula C20H38O4Sn, is a white or off-white powder. Stannous neodecanoate has a high melting point and stable chemical properties, and can maintain its catalytic activity over a wide temperature range. Stannous neodecanoate is insoluble in water, but soluble in organic solvents, which facilitates its application in organic synthesis reactions such as polyurethane. In addition, stannous neodecanoate also has good thermal stability and hydrolysis resistance, and can maintain its catalytic efficiency in complex reaction environments. Stannous neodecanoate is mainly used as a catalyst in the polyurethane industry, and its unique catalytic properties and stability make it an important part of the polyurethane production process. In the synthesis reaction of polyurethane, stannous neodecanoate can effectively reduce the reaction activation energy, accelerate the polymerization reaction, and thus improve production efficiency. At the same time, stannous neodecanoate can also improve the physical properties and chemical stability of polyurethane products, giving them a longer service life and a wider range of applications. Compared with traditional catalysts, stannous neodecanoate has higher catalytic activity and selectivity. This means that under the same reaction conditions, using stannous neodecanoate as a catalyst can obtain a higher product yield and less by-products. In addition, stannous neodecanoate has good hydrolysis resistance and thermal stability, and can maintain its catalytic effect in harsh environments such as high temperature and high humidity.

[0004] In the prior art, HCl waste gas and organic waste gas are generated during the production of stannous neodecanoate. The mixed gas is usually collected and then treated uniformly, which requires a more complex treatment system and higher technical requirements, thereby increasing the difficulty of treatment and leading to an increase in treatment costs. Utility Model Content

[0005] In order to solve the problems of the difficulty in treating the mixed waste gas mentioned in the above background technology, the utility model provides an environmentally friendly stannous neodecanoate production device which can replace stannous octoate.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A production device for environmentally friendly stannous neodecanoate that can replace stannous octoate comprises a reactor body and a tail gas collecting device, wherein a reactor cover is installed on the top of the reactor body, a support column is fixedly connected to the bottom of the reactor body, a pipeline is arranged on the top of the tail gas collecting device, a tail gas collecting pipeline is arranged on the bottom, the tail gas collecting pipeline is connected to the tail gas collecting pipeline via a flange plate, one end of the pipeline and the tail gas collecting pipeline are mutually connected inside the tail gas collecting device to form a continuous channel, and a butterfly damper is installed inside the tail gas collecting pipeline.

[0008] Furthermore, a feed port and a stirring device are provided on the top of the reactor cover, a stirring rod is fixedly connected to the bottom of the stirring device, the stirring rod passes through the reactor cover and extends into the reactor body, and a stirring blade is also installed at the bottom of the stirring rod.

[0009] Furthermore, a branch pipe is provided on the bottom side of the exhaust gas collecting device, and the branch pipe forms a certain angle with the exhaust gas collecting device, and the angle is an acute angle. A bubbling tube is also movably connected to the bottom of the collecting device.

[0010] Furthermore, the butterfly damper includes a butterfly wing A, a rod sleeve A, a butterfly wing B and a rod sleeve B, the butterfly wing A is fixedly connected to the rod sleeve A, the butterfly wing B is fixedly connected to the rod sleeve B, the rod sleeve A and the rod sleeve B are nested at both ends of the fixed rod, the butterfly wing A and the butterfly wing B are movably connected to the surface of the fixed rod, the fixed rod is fixedly connected to the fixer, and the rod sleeve A and the rod sleeve B can be adjusted in tightness.

[0011] Furthermore, the other end of the pipeline is installed on the side surface of the exhaust gas treatment device, and a plurality of adsorption plates are installed inside the exhaust gas treatment device.

[0012] Furthermore, one end of the bubbling tube is fixedly connected to a spherical container, and the other end is provided with a plurality of bubbling holes. The end of the bubbling tube with the bubbling holes is installed at the bottom of the exhaust gas collection pipe, and the branch pipe is located between the bubbling tube and the butterfly damper.

[0013] Furthermore, the surface of the adsorption plate is honeycomb-shaped, and the adsorption plate is an activated carbon plate or a carbon fiber adsorption plate.

[0014] Furthermore, an absorbent is placed inside the spherical container. Preferably, the absorbent is sodium hydroxide, and the sodium hydroxide is in the form of flakes or powder.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. In this technical solution, when the exhaust gas is generated and passes through the exhaust gas collection pipe, the butterfly damper can temporarily block the flow of the exhaust gas, so that the exhaust gas accumulates in the pipe. When the exhaust gas accumulates to a certain amount, the butterfly damper will adjust the opening to allow the exhaust gas to pass through in a concentrated manner, ensuring that HCl and other harmful substances in the exhaust gas have sufficient time to fully react with the sodium hydroxide absorbent in the pipe, thereby improving the exhaust gas treatment efficiency.

[0017] 2. The butterfly damper also ensures that the exhaust gas can be more evenly distributed on the adsorption plate when passing through the exhaust gas collection device, thereby enhancing the adsorption effect of harmful substances in the exhaust gas. At the same time, since the residence time of the exhaust gas in the pipeline is extended, the HCl in the exhaust gas has more time to be absorbed by the sodium hydroxide, which significantly improves the quality of exhaust gas treatment.

[0018] 3. Through the regulation of the butterfly damper, it is possible to avoid a sudden outflow of a large amount of exhaust gas, which may cause overload of the treatment system. It also helps to reduce the pressure fluctuations of the system and improve the stability and safety of the entire exhaust gas treatment system.

[0019] 4. Through the hierarchical treatment of waste gas, the emission of harmful substances in the waste gas is reduced, which meets the requirements of environmental protection. At the same time, due to the improvement of waste gas treatment efficiency, the possible energy consumption in the treatment process is also reduced, achieving the goal of energy saving and environmental protection.

[0020] 5. This technical solution has a compact structure and occupies a small area. It is suitable for installation and use in limited space, which is conducive to saving space resources in the production site. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the device;

[0023] Figure 2 It is a schematic diagram of the structure of the reactor cover and the stirring device;

[0024] Figure 3 is a schematic diagram of the structure of the exhaust gas collection device;

[0025] Figure 4 It is the structural schematic diagram of the butterfly damper;

[0026] Figure 5 is a schematic diagram of the internal structure of the exhaust gas treatment device;

[0027] Figure 6 Schematic diagram of the internal structure of the bubbling tube;

[0028] Figure 7 This is a schematic diagram of the structure of butterfly wing B.

[0029] In the figure: 1. reactor body; 2. feed inlet; 3. stirring device; 4. pipeline; 5. tail gas treatment device; 501. adsorption plate; 6. support column; 7. tail gas collecting device; 8. reactor cover; 9. stirring rod; 10. stirring blade; 11. flange; 12. tail gas collecting pipeline; 13. butterfly damper; 1301. butterfly wing A; 1302. butterfly wing B; 1303. fixer; 1304. rod sleeve B; 1305. fixing rod; 1306. rod sleeve A; 14. branch pipe; 15. bubbling tube; 1501. bubbling hole; 1502. spherical container. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solution of the utility model in conjunction with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Example 1

[0032] The raw materials required for producing stannous neodecanoate are added into the reactor body 1 through the feed port 2 on the top of the reactor cover 8. The stirring device 3 is started, and the stirring rod 9 and the stirring blade 10 begin to rotate to ensure that the reactants are evenly mixed in the reactor body 1. As the reaction proceeds, the tail gas generated enters the tail gas collection device 7 through the branch pipe 14. The branch pipe 14 is at an angle of 60 degrees to the tail gas collection pipe 12. The tail gas first flows through the tail gas collection pipe 12 and enters the bubbling pipe 15 under the action of gravity. The butterfly damper 13 therein plays a damping role to control the tail gas flow rate. The tail gas reacts with the sodium hydroxide in the spherical container 1502 under the action of the bubbling hole 1501 to neutralize or remove most of the hydrogen chloride gas to obtain the preliminarily treated tail gas. When the preliminarily treated exhaust gas flows through the butterfly damper 13, by adjusting the position of the rod sleeve A 1306 and the rod sleeve B 1304 on the fixed rod 1305, the opening and closing degree of the butterfly wing A 1301 and the butterfly wing B 1302 can be changed, thereby realizing the control of the exhaust gas flow. When the butterfly wing A 1301 and the butterfly wing B 1302 are opened to a large extent, the cross-sectional area through which the fluid passes increases, and the flow rate increases accordingly; conversely, when the butterfly wing A 1301 and the butterfly wing B 1302 are tightened, the cross-sectional area through which the fluid passes decreases, and the flow rate also decreases accordingly. When the preliminarily treated exhaust gas reaches a certain amount, the preliminarily treated exhaust gas continues to enter the exhaust gas treatment device 5 through the pipeline 4. In the exhaust gas treatment device 5, the exhaust gas passes through the adsorption plate 501 with a strong adsorption capacity, which can effectively remove the residual organic waste gas in the exhaust gas.

[0033] The above description 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production device for environmentally friendly stannous neodecanoate that can replace stannous octoate, comprising a reaction vessel (1) and an exhaust gas collection device (7), characterized in that: A reactor cover (8) is installed on the top of the reactor body (1), a support column (6) is fixedly connected to the bottom of the reactor body (1), a pipeline (4) is arranged on the top of the exhaust gas collection device (7), and an exhaust gas collection pipeline (12) is flange-connected to the bottom via a flange plate (11), one end of the pipeline (4) and the exhaust gas collection pipeline (12) are interconnected inside the exhaust gas collection device (7) to form a continuous channel, and a butterfly damper (13) is installed inside the exhaust gas collection pipeline (12).

2. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 1, characterized in that: The top of the reactor cover (8) is provided with a feed inlet (2) and a stirring device (3); the bottom of the stirring device (3) is fixedly connected with a stirring rod (9); the stirring rod (9) passes through the reactor cover (8) and extends into the interior of the reactor body (1); a stirring blade (10) is also installed at the bottom of the stirring rod (9).

3. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 1, characterized in that: A branch pipe (14) is provided on the bottom side of the tail gas collection device (7), the branch pipe (14) and the tail gas collection device (7) form a certain angle, the angle being an acute angle, and a bubbling tube (15) is also movably connected to the bottom of the collection device (7).

4. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 1, characterized in that: The butterfly damper (13) comprises a butterfly wing A (1301), a rod sleeve A (1306), a butterfly wing B (1302) and a rod sleeve B (1304); the butterfly wing A (1301) is fixedly connected to the rod sleeve A (1306); the butterfly wing B (1302) is fixedly connected to the rod sleeve B (1304); the rod sleeve A (1306) and the rod sleeve B (1304) are nested at two ends of a fixed rod (1305); the butterfly wing A (1301) and the butterfly wing B (1302) are movably connected to the surface of the fixed rod (1305); the fixed rod (1305) is fixedly connected to a fixer (1303); and the rod sleeve A (1306) and the rod sleeve B (1304) are adjustable in tightness.

5. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 1, characterized in that: The other end of the pipeline (4) is mounted on the side surface of the exhaust gas treatment device (5), and a plurality of adsorption plates (501) are mounted inside the exhaust gas treatment device (5).

6. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 3, characterized in that: One end of the bubbling tube (15) is fixedly connected to a spherical container (1502), and the other end is provided with a plurality of bubbling holes (1501). The end of the bubbling tube (15) with the bubbling holes (1501) is installed at the bottom of the exhaust gas collection pipe (12), and the branch pipe (14) is located between the bubbling tube (15) and the butterfly damper (13).

7. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 5, characterized in that: The surface of the adsorption plate (501) is honeycomb-shaped, and the adsorption plate (501) is an activated carbon plate or a carbon fiber adsorption plate.

8. The production device of an environmentally friendly stannous neodecanoate that can replace stannous octoate according to claim 6, characterized in that: Sodium hydroxide is placed inside the spherical container (1502), and the sodium hydroxide is in the form of flakes or powder.

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