Visual high polymer material combustion product collecting device

Abstract

The utility model discloses a visual high polymer material combustion product collecting device, the collecting device comprises a gas supply system, a combustion system, a collecting system and a waste gas treatment system, one end of the gas supply system is connected with the combustion system, one end of the combustion system is connected with a first reversing valve, the first reversing valve is connected with the collecting system, and the collecting system is connected with the waste gas treatment system. One end of the collection system is connected with a waste gas collection cover, the first reversing valve is connected with a third reversing valve, the third reversing valve is connected with a waste gas collection cover, and the third reversing valve is connected with a waste gas treatment system; the collection system is mounted at the rear end of the thermogravimetric analyzer, so that the use efficiency of the analyzer is improved on the premise of not delaying the functions of the thermogravimetric analyzer, in addition, macromolecular combustion products can be directly observed through the collection system, and the components of the combustion products are conveniently collected and researched through the gas-liquid separator.

Description

Technical Field

[0001] The present application relates to a collection device for combustion products, and in particular to a collection device for visualizing combustion products of polymer materials. Background Art

[0002] Polymer materials are materials composed of compounds with relatively high molecular weight, including rubber, plastic, fiber, coating, adhesive and polymer-based composite materials. Because of their good physical and chemical properties, they are widely used in major areas of the national economy such as construction, transportation, agriculture, electrical and electronic industries, and people's daily lives. However, most polymer materials are combustible and flammable materials. Since polymer materials generally contain elements such as chlorine, sulfur, and nitrogen, they will release a large amount of thick smoke and harmful gases (hydrogen cyanide, hydrogen chloride, carbon monoxide, etc.) during the combustion process, which seriously endangers human life safety and the ecological environment. Therefore, it is particularly important to study the combustion products of polymer materials.

[0003] During the combustion of polymer materials, large molecules break to produce gases and small molecular non-gas compounds. At different combustion stages and temperatures, the gas components and non-gas components produced are different. Therefore, real-time monitoring of the combustion products of polymer compounds is crucial to studying the entire combustion process of polymer materials. Studying the entire combustion process of polymer materials lays a theoretical foundation for the later development and optimization of polymer materials.

[0004] There are many devices for studying the combustion process of polymer materials, some of which are intermittent combustion sampling devices and some are large instrument combination devices. The intermittent combustion sampling device takes out the gas from the gas storage box for analysis after the entire combustion process is completed, and it is impossible to realize real-time analysis of combustion products. The commonly used large instrument combination devices on the market include thermogravimetric infrared analyzer (TGA-FTIR), thermogravimetric gas chromatography-mass spectrometry (TGA-GC-MS), and pyrolysis gas chromatography-mass spectrometry (Py-GC-MS). Although this instrument combination detection method can realize real-time detection, it can only detect the combustion products that the combination device can respond to, and cannot cover all combustion products. In addition, the instrument cost of large instrument combination instruments is not low, the applicable situation is single, and the utilization rate of each detection instrument is not high. For some small companies, schools, and small R&D teams, high investment and low utilization are not desirable; flexible use of existing detection instruments, development of existing instruments with multifunctionality, and completion of R&D tasks are the most ideal state.

[0005] Therefore, there is an urgent need for a collection device for visualizing the combustion products of polymer materials. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a device for collecting visible polymer material combustion products that can cover all combustion products.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for collecting visualized polymer material combustion products, characterized in that the collecting device comprises an air supply system, a combustion system, a collecting system and an exhaust gas treatment system, one end of the air supply system is connected to the combustion system, one end of the combustion system is connected to a first reversing valve, the first reversing valve is connected to the collecting system, one end of the collecting system is connected to an exhaust gas collecting hood, the first reversing valve is connected to a third reversing valve, the third reversing valve is connected to an exhaust gas collecting hood, and the third reversing valve is connected to an exhaust gas treatment system.

[0008] Preferably, the gas supply system includes a first gas cylinder and a second gas cylinder, the first gas cylinder is connected to a first dryer, the first dryer is connected to a first flow meter, the first flow meter is connected to a combustion system, the second gas cylinder is connected to a second dryer, the second dryer is connected to a second flow meter, and the second flow meter is connected to a combustion system.

[0009] Preferably, the combustion system is a thermogravimetric analyzer, and one end of the thermogravimetric analyzer is connected to a first reversing valve.

[0010] Preferably, the collection system includes a heat exchange structure, which includes a microchannel heat exchanger and a constant temperature component. The microchannel heat exchanger is respectively provided with an air inlet, an air outlet, a liquid inlet and a liquid outlet at four corners. The air inlet is connected to a first reversing valve, the liquid inlet is connected to a constant temperature component, the liquid outlet is connected to a constant temperature component, and the air outlet is connected to a second reversing valve.

[0011] Preferably, the thermostatic component includes a water pump and a thermostatic water tank, the water pump is connected to the liquid inlet, the thermostatic water tank is connected to the liquid outlet, and the water pump and the thermostatic water tank form a circulating water circuit through the liquid inlet, the liquid outlet and the microchannel heat exchanger.

[0012] Preferably, the collection system also includes a collection structure, which includes a gas-liquid separator, a liquid collection bottle and an air bag, the upper end of the gas-liquid separator is connected to a second reversing valve, the upper end of the gas-liquid separator is connected to an air bag, one side of the lower part of the gas-liquid separator is connected to the liquid collection bottle, and the second reversing valve is connected to an exhaust gas collection hood.

[0013] Preferably, the waste gas treatment system includes a buffer bottle, a gas absorption bottle and a magnetic stirrer. The buffer bottle is connected to a third reversing valve. The buffer bottle is connected to a gas absorption bottle. A magnetic stirrer is installed at the lower end of the gas absorption bottle. The gas absorption bottle is connected to a waste gas collection hood.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model improves the use efficiency of the instrument by installing the collection system at the rear end of the thermogravimetric analyzer without delaying the function of the thermogravimetric analyzer itself. In addition, the polymer combustion products can be directly observed through the collection system, and the components of the combustion products can be conveniently collected and studied through the gas-liquid separator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the utility model;

[0018] In the figure: air supply system 1; combustion system 2; collection system 3; exhaust gas treatment system 4; first reversing valve 5; second reversing valve 6; exhaust gas collection hood 7; third reversing valve 8; first gas cylinder 9; first dryer 10; first flowmeter 11; second gas cylinder 12; second dryer 13; second flowmeter 14; thermogravimetric analyzer 15; heat exchange structure 16; microchannel heat exchanger 17; constant temperature component 18; air inlet 19; air outlet 20; liquid inlet 21; liquid outlet 22; water pump 23; constant temperature water tank 24; collection structure 25; gas-liquid separator 26; liquid collection bottle 27; air bag 28; buffer bottle 29; gas absorption bottle 30; magnetic stirrer 31. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] like Figure 1 As shown, the utility model provides a technical solution: a device for collecting visualized polymer material combustion products, the collecting device comprising an air supply system 1, a combustion system 2, a collecting system 3 and an exhaust gas treatment system 4, one end of the air supply system 1 is connected to the combustion system 2, one end of the combustion system 2 is connected to a first reversing valve 5, the first reversing valve 5 is connected to the collecting system 3, one end of the collecting system 3 is connected to an exhaust gas collecting hood 7, the first reversing valve 5 is connected to a third reversing valve 8, the third reversing valve 8 is connected to the exhaust gas collecting hood 7, and the third reversing valve 8 is connected to the exhaust gas treatment system 4.

[0023] like Figure 2 As shown, the gas delivery system 1 includes a first gas cylinder 9 and a second gas cylinder 12, the first gas cylinder 9 is connected to a first dryer 10, the first dryer 10 is connected to a first flow meter 11, the first flow meter 11 is connected to a combustion system 2, the second gas cylinder 12 is connected to a second dryer 13, the second dryer 13 is connected to a second flow meter 14, and the second flow meter 14 is connected to the combustion system 2; the first gas cylinder 9 can be filled with high-purity nitrogen or argon, and the second gas cylinder 12 can be filled with oxygen or air. Generally speaking, when studying the thermal stability of polymers, it is more appropriate to fill the second gas cylinder 12 with air.

[0024] like Figure 2 As shown, the combustion system 2 is a thermogravimetric analyzer 15, and one end of the thermogravimetric analyzer 15 is connected to the first reversing valve 5. The collection system 3 includes a heat exchange structure 16, and the heat exchange structure 16 includes a microchannel heat exchanger 17 and a constant temperature component 18. The microchannel heat exchanger 17 is provided with an air inlet 19, an air outlet 20, a liquid inlet 21 and a liquid outlet 22 at four corners, the air inlet 19 is connected to the first reversing valve 5, the liquid inlet 21 is connected to the constant temperature component 18, the liquid outlet 22 is connected to the constant temperature component 18, and the air outlet 20 is connected to the second reversing valve 6.

[0025] like Figure 2 As shown, the constant temperature component 18 includes a water pump 23 and a constant temperature water tank 24. The water pump 23 is connected to the liquid inlet 21, and the constant temperature water tank 24 is connected to the liquid outlet 22. The water pump 23 and the constant temperature water tank 24 form a circulating water circuit through the liquid inlet 21, the liquid outlet 22 and the microchannel heat exchanger 17.

[0026] like Figure 2 As shown, the collection system 3 also includes a collection structure 25, and the collection structure 25 includes a gas-liquid separator 26, a liquid collecting bottle 27 and an air bag 28. The upper end of the gas-liquid separator 26 is connected to the second reversing valve 6, the upper end of the gas-liquid separator 26 is connected to the air bag 28, the lower side of the gas-liquid separator 26 is connected to the liquid collecting bottle 27, and the second reversing valve 6 is connected to the exhaust gas collection cover 7.

[0027] The waste gas treatment system 4 includes a buffer bottle 29, a gas absorption bottle 30 and a magnetic stirrer 31. The buffer bottle 29 is connected to the third reversing valve 8. The buffer bottle 29 is connected to the gas absorption bottle 30. The magnetic stirrer 31 is installed at the lower end of the gas absorption bottle 30. The gas absorption bottle 30 is connected to the waste gas collection cover 7. The gas absorption bottle 30 is installed at the upper end of the magnetic stirrer. When the gas is absorbed, the magnetic stirrer 31 is used to stir the gas to accelerate the absorption.

[0028] Working principle of this utility model:

[0029] When the device is used, the polymer material is placed in the crucible of the thermogravimetric analyzer 15, the heating rate and combustion temperature of the thermogravimetric analyzer 15 are set, the first reversing valve 5 is rotated so that the first reversing valve 5 is connected to the air inlet 21 of the microchannel heat exchanger 17, the second reversing valve 6 is rotated so that it is connected to the exhaust gas collection hood 7, and the gas and liquid generation of the microchannel heat exchanger 17 is observed. When the temperature rises to the preset temperature or smoke is observed to be generated, the second reversing valve 6 is rotated to communicate with the gas-liquid separator 26, and the air inlet of the air bag 28 is opened to start collecting gas. At this time, the two-way valve used to connect the liquid collection bottle 27 and the gas-liquid separator 26 is in a closed state. During the whole process, the gas and liquid generation can be observed at any time, the air bag 28 can be flexibly replaced, and the combustion products can be collected at any time as needed. When the collection of combustion products is completed, the second reversing valve 6 is rotated to communicate with the exhaust gas collection hood 7 to discharge the exhaust gas. When collecting liquid products, open the two-way valve to let the liquid components in the gas-liquid separator 26 flow to the liquid collection bottle 27. If the liquid products are small, they can be cleaned with solvents and collected for later use. If coke-like substances are found to remain in the microchannel heat exchanger 17, the channel can be opened for collection or cleaning. At this time, if the temperature is not high, the heat exchange structure 16 can be turned off. If the temperature is high, start the heat exchange structure 16 and turn on the water pump 23. The water pump 23 transports the water in the constant temperature water tank 24 to the microchannel heat exchanger 17 through the liquid inlet 21, and the water after heat exchange returns to the constant temperature water tank 24 through the liquid outlet 22.

[0030] After the collection of combustion products is completed, the waste gas can be preliminarily treated through the waste gas treatment system 4. The first reversing valve 5 is rotated to connect with the third reversing valve 8, and the third reversing valve 8 is rotated to connect with the buffer bottle 29, so that the waste gas passes through the buffer bottle 29 and enters the gas collecting bottle 30. A magnet for stirring is placed in the gas collecting bottle 30 in advance, and the magnetic stirrer 31 can be used to stir the interior of the gas collecting bottle 30 to accelerate the absorption of the waste gas and realize the function of collecting acidic gas and halogen gas.

[0031] The first reversing valve 5 is rotated to be connected to the third reversing valve 8 , and the third reversing valve 8 can be connected to the exhaust gas collecting hood 7 to realize the function of the thermogravimetric analyzer 15 itself.

[0032] For the convenience of description, the orientations mentioned above are now defined as follows: the up, down, left, right, front, and back directions mentioned above are consistent with the up, down, left, right, front, and back directions of the projection relationship of the image itself.

[0033] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0034] The above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A device for collecting visual polymer material combustion products, characterized in that: The collecting device comprises an air supply system (1), a combustion system (2), a collecting system (3) and an exhaust gas treatment system (4); one end of the air supply system (1) is connected to the combustion system (2); one end of the combustion system (2) is connected to a first reversing valve (5); the first reversing valve (5) is connected to the collecting system (3); one end of the collecting system (3) is connected to an exhaust gas collecting hood (7); the first reversing valve (5) is connected to a third reversing valve (8); the third reversing valve (8) is connected to the exhaust gas collecting hood (7); and the third reversing valve (8) is connected to the exhaust gas treatment system (4).

2. A device for collecting visualized polymer material combustion products according to claim 1, characterized in that: The gas supply system (1) comprises a first gas cylinder (9) and a second gas cylinder (12); the first gas cylinder (9) is connected to a first dryer (10); the first dryer (10) is connected to a first flow meter (11); the first flow meter (11) is connected to a combustion system (2); the second gas cylinder (12) is connected to a second dryer (13); the second dryer (13) is connected to a second flow meter (14); the second flow meter (14) is connected to the combustion system (2).

3. A device for collecting visualized polymer material combustion products according to claim 2, characterized in that: The combustion system (2) is a thermogravimetric analyzer (15), and one end of the thermogravimetric analyzer (15) is connected to a first reversing valve (5).

4. The device for collecting visualized polymer material combustion products according to claim 1, characterized in that: The collection system (3) comprises a heat exchange structure (16), the heat exchange structure (16) comprising a microchannel heat exchanger (17) and a thermostatic component (18), the microchannel heat exchanger (17) having four corners respectively provided with an air inlet (19), an air outlet (20), a liquid inlet (21) and a liquid outlet (22), the air inlet (19) being connected to a first reversing valve (5), the liquid inlet (21) being connected to a thermostatic component (18), the liquid outlet (22) being connected to a thermostatic component (18), and the air outlet (20) being connected to a second reversing valve (6).

5. The device for collecting visualized polymer material combustion products according to claim 4, characterized in that: The thermostatic component (18) comprises a water pump (23) and a thermostatic water tank (24); the water pump (23) is connected to the liquid inlet (21); the thermostatic water tank (24) is connected to the liquid outlet (22); the water pump (23) and the thermostatic water tank (24) form a circulating water circuit via the liquid inlet (21), the liquid outlet (22) and the microchannel heat exchanger (17).

6. The device for collecting visualized polymer material combustion products according to claim 4, characterized in that: The collection system (3) further comprises a collection structure (25), wherein the collection structure (25) comprises a gas-liquid separator (26), a liquid collection bottle (27) and an air bag (28), wherein the upper end of the gas-liquid separator (26) is connected to a second reversing valve (6), the upper end of the gas-liquid separator (26) is connected to an air bag (28), a lower side of the gas-liquid separator (26) is connected to a liquid collection bottle (27), and the second reversing valve (6) is connected to an exhaust gas collection hood (7).

7. The device for collecting visualized polymer material combustion products according to claim 1, characterized in that: The waste gas treatment system (4) comprises a buffer bottle (29), a gas absorption bottle (30) and a magnetic stirrer (31); the buffer bottle (29) is connected to a third reversing valve (8); the buffer bottle (29) is connected to the gas absorption bottle (30); a magnetic stirrer (31) is installed at the lower end of the gas absorption bottle (30); and the gas absorption bottle (30) is connected to a waste gas collection hood (7).

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