A heating device for mixing liquid co-boiling

Abstract

A kind of heating device for mixed liquid azeotrope, it is related to chemical production field, including heating box, heating bottle and heating plate, wherein, heating bottle is arranged in the inside of heating plate, heating plate is arranged below heating bottle, the lower surface of heating bottle is provided with uniform heating plate, the lower surface of uniform heating plate is provided with heat receiving line, the upper surface of uniform heating plate is provided with heat conduction protrusion, the bottom of heating bottle is provided with uniform heating plate in the utility model, the lower surface of uniform heating plate is provided with heat receiving line, the upper surface of uniform heating plate is provided with heat conduction protrusion, heating plate heats uniform heating plate, uniform heating plate is heated sufficiently by heat receiving line in bottom, part of heat on uniform heating plate is transferred to heating bottle by heat conduction protrusion, another part of heat heats airflow between heat conduction protrusion, and then make the bottom of heating bottle be heated more evenly, prevent the situation that uniform heating plate and the bottom of heating bottle are not contacted insufficiently and lead to uneven heating, and then reduce azeotrope component fluctuation.

Description

Technical Field

[0001] This utility model relates to the field of chemical production technology, and in particular to a heating device for azeotropic mixing of liquids. Background Technology

[0002] In the industrial production of n-propanol, its crude product often forms a binary or multi-component azeotropic system with water, propyl acetate, etc. These azeotropes have similar boiling points, making effective separation difficult with conventional distillation. Azeotropic distillation is the core process for overcoming this technical bottleneck. By adding an azeotropic agent (such as benzene or cyclohexane), a new azeotrope can be formed with a component in the system, altering the original azeotropic composition and thus achieving efficient separation of n-propanol from impurities. This ensures that the final product purity meets industrial standards. Therefore, the azeotropic process is crucial to the product quality and yield of n-propanol production.

[0003] However, existing azeotropic heating devices have significant drawbacks: traditional jacketed heating relies on heat conduction through the vessel wall, and some built-in coil heating devices, due to sparse coil distribution or unreasonable path design, have heating dead zones, resulting in uneven heating of the mixed liquid. This leads to a series of problems: first, it disrupts the azeotropic equilibrium, causing fluctuations in the azeotropic composition, reducing separation efficiency, and increasing raw material loss; second, localized overheating easily triggers side reactions such as n-propanol oxidation and azeotropic agent polymerization, producing impurities that affect product purity; and third, uneven temperature exacerbates scaling inside the vessel, shortens the device's lifespan, increases cleaning and maintenance costs, and restricts production continuity and economy. Utility Model Content

[0004] This utility model aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, the purpose of this utility model is to provide a heating device for azeotropic mixing of liquids, so that the heating bottle is heated evenly and the fluctuation of azeotropic composition is reduced.

[0006] To achieve the above objectives, this utility model proposes a heating device for azeotropic mixing of liquids, comprising a heating box, a heating bottle, and a heating plate. The heating bottle is disposed inside the heating plate, and the heating plate is disposed below the heating bottle. A heat-dissipating plate is disposed on the lower surface of the heating bottle, and the lower surface of the heat-dissipating plate is provided with heat-receiving textures. The upper surface of the heat-dissipating plate is provided with heat-conducting protrusions.

[0007] Furthermore, the bottom of the heating bottle is horizontal, the body of the heating bottle is inverted conical, and a flow guide is provided on the heating box. The flow guide is inverted conical and is positioned above the body of the heating bottle.

[0008] Furthermore, the top of the heating bottle is provided with a bottleneck, the top of the flow guide is provided with a fixing nozzle, the fixing nozzle is fitted outside the bottleneck, and there is a gap between the inner wall of the fixing nozzle and the bottleneck, a smoke exhaust port is provided through the fixing nozzle, and a fixing plug is provided at the top of the fixing nozzle.

[0009] Furthermore, the inner wall of the heating chamber is provided with a bottle-side support, the heating bottle is placed inside the bottle-side support, the edge of the heat-equalizing plate is provided with a heat-equalizing plate support, and the bottle-side support and the heat-equalizing plate support are provided with a smoke exhaust groove running through them vertically.

[0010] Furthermore, the upper surface of the heating plate is provided with a gas nozzle and an auxiliary gas nozzle, the bottom of the heating plate is provided with an auxiliary gas pipe and a gas pipe, the gas pipe is connected to the gas nozzle, the auxiliary gas nozzle is connected to the auxiliary gas pipe, the gas nozzle is also provided with an ignition coil, and a connecting seat is provided between the heating plate and the heating box.

[0011] Furthermore, an exhaust valve is provided at the top of the bottleneck.

[0012] Beneficial effects: This utility model sets a heat-equalizing plate at the bottom of the heating bottle. The lower surface of the heat-equalizing plate is provided with heat-receiving textures, and the upper surface of the heat-equalizing plate is provided with heat-conducting protrusions. The heating plate heats the heat-equalizing plate, and the heat-equalizing plate is fully heated through the heat-receiving textures at the bottom. Part of the heat on the heat-equalizing plate is transferred to the heating bottle through the heat-conducting protrusions, and the other part heats the airflow between the heat-conducting protrusions. This makes the bottom of the heating bottle more evenly heated, prevents uneven heating caused by insufficient contact between the heat-equalizing plate and the bottom of the heating bottle, and thus reduces the fluctuation of azeotropic composition.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of a heating device for azeotropic mixing of liquids according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the heating device for azeotropic mixing of liquids according to an embodiment of the present invention from another perspective;

[0017] Figure 3 This is a front cross-sectional view of a heating device for azeotropic mixing of liquids according to an embodiment of the present invention;

[0018] Figure 4 This is a top cross-sectional view of a heating device for azeotropic mixing of liquids according to an embodiment of the present invention.

[0019] As shown in the figure: 1. Heating box; 11. Bottle side support; 12. Heat equalizing plate support; 13. Smoke exhaust trough; 2. Flow guide; 21. Fixing nozzle; 22. Smoke exhaust port; 23. Fixing plug; 3. Heating bottle; 31. Bottle neck; 32. Exhaust valve; 33. Flue; 4. Support; 5. Heat equalizing plate; 51. Heating texture; 52. Heat-conducting protrusion; 6. Heating plate; 61. Connecting seat; 62. Gas nozzle; 63. Combustion-supporting nozzle; 64. Combustion-supporting nozzle; 65. Gas pipe. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] The heating device for azeotropic mixing of liquids according to an embodiment of the present invention will now be described with reference to the accompanying drawings.

[0022] like Figures 1-4 As shown, the heating device for azeotropic mixing of liquids provided in this embodiment of the present invention includes a heating box 1, a heating bottle 3 and a heating plate 6. The bottom of the heating box 1 is provided with a support 4, the heating bottle 3 is disposed inside the heating plate 6, the heating plate 6 is disposed below the heating bottle 3, the lower surface of the heating bottle 3 is provided with a heat-dissipating plate 5, the lower surface of the heat-dissipating plate 5 is provided with heat-receiving textures 51, and the upper surface of the heat-dissipating plate 5 is provided with heat-conducting protrusions 52.

[0023] Specifically, when using the heating device of this application, the azeotropic liquid is first injected into the heating bottle 3. As the heating plate 6 heats the heat-equalizing plate 5, the heat-equalizing plate 5 is fully heated through the heat-receiving grooves 51 at the bottom. Part of the heat on the heat-equalizing plate 5 is transferred to the heating bottle 3 through direct contact with the bottom of the heating bottle 3 via the heat-conducting protrusions 52. The other part heats the airflow between the heat-conducting protrusions 52, thereby making the bottom of the heating bottle 3 more evenly heated. This prevents uneven heating caused by insufficient contact between the heat-equalizing plate 5 and the bottom of the heating bottle 3, thereby reducing fluctuations in the composition of the azeotropic liquid.

[0024] In one embodiment of this utility model, such as Figure 1 and Figure 3 As shown, the bottom of the heating bottle 3 is horizontal, and the body of the heating bottle 3 is an inverted conical structure, so that the bottom of the heating bottle 3 is fully heated. The heating box 1 is equipped with a flow guide hood 2, which is an inverted conical structure and is placed above the body of the heating bottle 3.

[0025] The top of the heating bottle 3 is provided with a bottleneck 31, and the top of the flow guide 2 is provided with a fixing nozzle 21. The fixing nozzle 21 is fitted on the outside of the bottleneck 31, and there is a gap between the inner wall of the fixing nozzle 21 and the bottleneck 31 to facilitate the exhaust of smoke. A smoke exhaust port 22 is provided through the fixing nozzle 21, and a fixing plug 23 is provided on the top of the fixing nozzle 21 to effectively fix the bottleneck 31.

[0026] Specifically, in order to make full use of the heat, after the heating plate 6 heats the inside of the heating box 1, the heat of the flue gas moves along the bottom of the heating bottle 3 to the edge and moves upward along the edge of the heating bottle 3. After passing through the guide hood 2, it enters the flue 33 between the guide hood 2 and the body of the heating bottle 3. The flue gas continues to move upward and heats the body of the heating bottle 3. Finally, the flue gas is discharged through the exhaust port 22 at the fixed nozzle 21.

[0027] In one embodiment of this utility model, such as Figure 3 and Figure 4 As shown, the inner wall of the heating box 1 is provided with a bottle side support 11, the heating bottle 3 is placed inside the bottle side support 11, the edge of the heat equalizing plate 5 is provided with a heat equalizing plate support 12, and the bottle side support 11 and the heat equalizing plate support 12 are provided with a smoke exhaust groove 13 running through them vertically.

[0028] Specifically, the bottle-side support 11 provides stable support for the side wall of the heating bottle 3, the heat-equalizing plate support 12 provides stable support for the edge of the heat-equalizing plate 5, and the exhaust trough 13 on the bottle-side support 11 and the heat-equalizing plate support 12 ensures that the flue gas is evenly distributed and transported upward.

[0029] In one embodiment of this utility model, such as Figure 3 As shown, a gas nozzle 62 and an auxiliary gas nozzle 62 are provided on the upper surface of the heating plate 6, and an auxiliary gas pipe 65 and a gas pipe 65 are provided at the bottom of the heating plate 6. The gas pipe 65 is connected to the gas nozzle 62, and the auxiliary gas nozzle 62 is connected to the auxiliary gas pipe 65. An ignition coil is also provided on the gas nozzle 62. A connecting seat 61 is provided between the heating plate 6 and the heating box 1.

[0030] Specifically, during the heating process, the combustion-supporting gas pipe 65 and the gas pipe 65 are respectively connected to the combustion-supporting gas and the gas. After the gas and the combustion-supporting gas reach the upper surface of the heating plate 6, the ignition coil on the gas nozzle 62 ignites the gas and heats it to form hot flue gas.

[0031] In one embodiment of this utility model, such as Figure 1 As shown, an exhaust valve 32 is provided at the top of the bottleneck 31 for collecting the gas after azeotropic reaction.

[0032] To clearly illustrate the above embodiments, refer to Figures 1-4The specific working principle of the heating device for azeotropic mixing of the present invention is as follows: When using the heating device of this application, the azeotropic liquid is first injected into the heating bottle 3 through the top of the bottleneck 31, and then the exhaust valve 32 is installed on the top of the bottleneck 31.

[0033] Subsequently, after the gas and auxiliary gas reach the upper surface of the heating plate 6, the ignition coil on the gas nozzle 62 ignites and heats the gas, forming hot flue gas. The heat equalizing plate 5 is fully heated by the heating grooves 51 at the bottom. Part of the heat on the heat equalizing plate 5 is transferred to the bottom of the heating bottle 3 through the heat-conducting protrusions 52, and the other part heats the airflow between the heat-conducting protrusions 52, thereby making the bottom of the heating bottle 3 more evenly heated and preventing uneven heating caused by insufficient contact between the heat equalizing plate 5 and the bottom of the heating bottle 3, thereby reducing the fluctuation of azeotropic composition.

[0034] After the heating plate 6 heats the inside of the heating box 1, the heat from the flue gas moves from the bottom of the heating bottle 3 to the edge, and then moves upward along the edge of the heating bottle 3. After passing through the guide hood 2, it enters the flue 33 between the guide hood 2 and the body of the heating bottle 3. The flue gas continues to move upward, heating the body of the heating bottle 3. Finally, the flue gas is discharged through the exhaust port 22 at the fixed nozzle 21, so that the heat is fully utilized.

[0035] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heating device for azeotropic mixing of liquids, characterized in that, It includes a heating box (1), a heating bottle (3) and a heating plate (6), wherein the heating bottle (3) is disposed inside the heating plate (6), the heating plate (6) is disposed below the heating bottle (3), a heat equalizing plate (5) is disposed on the lower surface of the heating bottle (3), a heat equalizing plate (5) is disposed on the lower surface of the heat equalizing plate (5), a heat-receiving texture (51) is disposed on the lower surface of the heat equalizing plate (5), and a heat-conducting protrusion (52) is disposed on the upper surface of the heat equalizing plate (5).

2. The heating device for azeotropic mixing of liquids according to claim 1, characterized in that, The bottom of the heating bottle (3) is horizontal, and the body of the heating bottle (3) is an inverted conical structure. A flow guide (2) is provided on the heating box (1). The flow guide (2) is an inverted conical structure and is placed above the body of the heating bottle (3).

3. The heating device for azeotropic mixing of liquids according to claim 2, characterized in that, The heating bottle (3) has a bottleneck (31) at the top, and the flow guide (2) has a fixing nozzle (21) at the top. The fixing nozzle (21) is fitted over the outside of the bottleneck (31), and there is a gap between the inner wall of the fixing nozzle (21) and the bottleneck (31). A smoke exhaust port (22) is opened through the fixing nozzle (21), and a fixing plug (23) is provided at the top of the fixing nozzle (21).

4. The heating device for azeotropic mixing of liquids according to claim 1, characterized in that, The inner wall of the heating box (1) is provided with a bottle side support (11), the heating bottle (3) is located inside the bottle side support (11), the edge of the heat equalizing plate (5) is provided with a heat equalizing plate support (12), and the bottle side support (11) and the heat equalizing plate support (12) are provided with a smoke exhaust groove (13) running through them vertically.

5. The heating device for azeotropic mixing of liquids according to claim 1, characterized in that, The upper surface of the heating plate (6) is provided with a gas nozzle (62) and an auxiliary gas nozzle (62). The bottom of the heating plate (6) is provided with an auxiliary gas pipe (65) and a gas pipe (65). The gas pipe (65) is connected to the gas nozzle (62). The auxiliary gas nozzle (62) is connected to the auxiliary gas pipe (65). An ignition coil is also provided on the gas nozzle (62). A connecting seat (61) is provided between the heating plate (6) and the heating box (1).

6. The heating apparatus for azeotropic mixing of liquids according to claim 3, characterized in that, An exhaust valve (32) is provided at the top of the bottleneck (31).

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