Multi-channel alkylphenol polyoxyethylene ether cracking reaction device for leather chemical detection

Abstract

The utility model discloses a multi-channel alkylphenol polyoxyethylene ether cracking reaction device for leather chemical detection. The multi-channel alkylphenol polyoxyethylene ether cracking reaction device comprises a heating jacket, the container is arranged on the heating sleeve; the connecting piece is arranged at the upper end of the container; the condensing mechanism comprises a barrel, and the barrel comprises an outer cavity filled with cooling water and configured to feed water from the bottom and discharge water from the top; the inner cavity is arranged in the outer cavity, and a plurality of water through holes are formed in the surface of the inner cavity; the spiral condensation pipe is arranged between the inner cavity and the outer cavity, and the spiral radius and the pipe diameter of the spiral condensation pipe are gradually reduced from bottom to top. Through cooperative arrangement of the connecting piece and the condensation mechanism, steam enters the spiral condensation pipe from the container through the steam opening, condensate enters the container again from the backflow pipe through the backflow opening, and a backflow channel of the condensate and a main channel of the steam are two pipelines. The problem that in the prior art, backflow condensate meets generated steam in a pipeline, and consequently the steam cannot enter a condensation mechanism is solved.

Description

Technical Field

[0001] This utility model relates to the field of chemical detection technology, and in particular to a multi-channel alkylphenol polyoxyethylene ether pyrolysis reaction device for leather chemical detection. Background Technology

[0002] Alkylphenol polyoxyethylene ethers (APEOs), particularly nonylphenol polyoxyethylene ethers (NPEOs) and octylphenol polyoxyethylene ethers (OPEOs), are used as surfactants in the leather and fur industry, but they pose potential hazards to the environment and human health. Therefore, accurate determination of these compounds in leather and fur is crucial for ensuring product quality, environmental protection, and consumer safety.

[0003] According to the national standard GB / T 33285.2-2024 "Determination of Alkylphenols and Alkylphenol Polyoxyethylene Ethers in Leather and Fur - Part 2: Indirect Method", this standard is applicable to the determination of alkylphenol (such as nonylphenol NP and octylphenol OP) and alkylphenol polyoxyethylene ether (such as nonylphenol polyoxyethylene ether NPEO and octylphenol polyoxyethylene ether OPEO) content in various leathers, furs and their processing auxiliaries. During the determination, a pyrolysis reaction of the alkylphenol polyoxyethylene ether is required. The specific procedure is as follows: take the sample extract or processing aid sample solution and add it to a flask containing aluminum iodide. Then, reflux at (90±2)℃ for (30±5) min. Remove the flask, add water dropwise until there is no boiling, then dilute with water and cool to room temperature.

[0004] However, the above-mentioned existing technology has the following problems: because it requires a condensation reflux of up to 30 minutes, during the condensation reflux process, the refluxed condensate will meet the generated steam in the pipeline, preventing the steam from entering the condensation component, causing a large pressure inside the flask, which affects the subsequent reflux process.

[0005] Therefore, it is necessary to provide a multi-channel alkylphenol polyoxyethylene ether pyrolysis reaction device for leather chemical detection to solve the above-mentioned technical problems. Summary of the Invention

[0006] This invention overcomes the shortcomings of the prior art and provides a multi-channel alkylphenol polyoxyethylene ether pyrolysis reaction device for leather chemical detection.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a multi-channel alkylphenol polyoxyethylene ether pyrolysis reaction device for leather chemical detection, comprising:

[0008] Heating mantle,

[0009] The container is mounted on the heating jacket;

[0010] A connector is disposed at the upper end of the container, the connector comprising: an end cap, and a steam port and a reflux port disposed on the end cap;

[0011] A condensation mechanism includes a cylindrical body, the cylindrical body comprising:

[0012] The outer cavity is filled with cooling water and is configured with bottom inlet and top outlet.

[0013] An inner cavity is disposed within the outer cavity, and the surface of the inner cavity is provided with several water passage holes;

[0014] A spiral condenser is disposed between the inner cavity and the outer cavity, wherein the spiral condenser is configured such that the spiral radius and the tube diameter gradually decrease from bottom to top;

[0015] The spiral condenser is provided with a steam inlet and a return pipe at its lower end, and the steam inlet is connected to the steam port; the spiral condenser is connected to a steam guide pipe at its upper end, and both the steam guide pipe and the return pipe are connected to the return port.

[0016] In a preferred embodiment of this invention, the heating surface of the heating jacket is an arc shape that matches the shape of the bottom of the container.

[0017] In a preferred embodiment of this invention, the end cap is detachably connected to the bottle opening of the container.

[0018] In a preferred embodiment of this utility model, the steam port is disposed on the upper surface of the end cap, with its central axis arranged vertically; the reflux port is disposed on the side of the end cap, and the angle between the central axis of the reflux port and the central axis of the steam port is 30-60°.

[0019] In a preferred embodiment of this invention, the lower end of the cylinder is positioned higher than the upper end of the container.

[0020] In a preferred embodiment of this utility model, the inner cavity is configured as a frustum-shaped cover with a closed upper end and an open lower end, and the lower end of the inner cavity is fixedly connected to the inner bottom surface of the cylinder.

[0021] In a preferred embodiment of this utility model, the lower end diameter of the spiral condenser tube is set to the upper end diameter in a ratio of 2-5:1.

[0022] In a preferred embodiment of this invention, viewed from bottom to top, the spiral radius of each turn of the spiral condenser is larger than that of the next turn.

[0023] In a preferred embodiment of the present invention, a recess is provided at the connection between the spiral condenser tube and the reflux tube, and the reflux tube is disposed at the bottom of the recess.

[0024] In a preferred embodiment of this invention, the recess is located directly in front of the steam inlet when viewed along the steam path.

[0025] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0026] (1) This utility model provides a multi-channel alkylphenol polyoxyethylene ether cracking reaction device for leather chemical detection. The connection parts and condensation mechanism are configured so that steam enters the spiral condenser tube from the container through the steam port, while the condensate enters the container again from the return pipe through the return port. The return channel of the condensate and the main channel of the steam are two pipelines, which solves the problem in the prior art that the refluxed condensate will meet the generated steam in the pipeline, causing the steam to be unable to enter the condensation mechanism.

[0027] (2) The present invention is provided with a spiral condenser tube, which is configured such that the spiral radius and the tube diameter gradually decrease from bottom to top. Moreover, the steam enters from the bottom end of the spiral condenser tube, that is, the tube diameter is the largest. This allows for a larger space when the steam enters, reducing the obstruction to the flow of condensate to the return tube. Furthermore, as the steam moves deeper into the spiral condenser tube, the increasingly smaller tube diameter of the spiral condenser tube makes the space for the steam smaller and smaller, and the proportion of steam contacting the inner wall of the condenser tube gradually increases, thereby improving the condensation efficiency.

[0028] (3) In this utility model, the spiral condenser tube is disposed between the inner cavity and the outer cavity, and the inner cavity is configured as a frustum-shaped cover with a closed upper end and an open lower end. The lower end of the inner cavity is fixedly connected to the inner bottom surface of the cylinder. That is to say, the cooling water can only enter from the bottom of the inner cavity, first filling the inner cavity, and then flowing out from several water passages on the side wall of the inner cavity, and then contacting the spiral condenser tube for heat exchange, and the steam is condensed. The structural design of the inner cavity makes the contact time between the cooling water and the upper and lower ends of the spiral condenser tube close, which solves the problem of insufficient condensation effect at the upper end caused by sequential contact from bottom to top in the prior art.

[0029] (4) The present invention has a recess at the connection between the spiral condenser tube and the return tube. The return tube is located at the bottom of the recess. And when viewed along the steam running path, the recess is located directly in front of the steam inlet. In this way, the condensate in the spiral condenser tube will enter the recess when it flows downward, instead of flowing into the steam inlet. This solves the problem in the prior art that the refluxed condensate will meet the generated steam in the pipe, causing the steam to be unable to enter the condensation mechanism. Attached Figure Description

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0031] Figure 1 This is a front view of the pyrolysis reaction apparatus according to a preferred embodiment of the present invention;

[0032] Figure 2 This is a front view of the internal structure of the condensation mechanism according to a preferred embodiment of the present invention;

[0033] Figure 3 This is a three-dimensional structural diagram of the spiral condenser tube according to a preferred embodiment of the present invention;

[0034] Figure 4 This is a three-dimensional structural diagram of the connector according to a preferred embodiment of the present invention.

[0035] In the diagram: 1. Heating jacket; 2. Container; 3. Connector; 31. End cap; 32. Steam port; 33. Return port; 4. Condensation mechanism; 41. Cylinder; 42. Outer cavity; 43. Inner cavity; 44. Spiral condenser tube; 45. Water passage hole; 46. Steam inlet; 47. Return pipe; 48. Steam guide pipe; 49. Recess. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0037] like Figure 1 As shown, a multi-channel alkylphenol polyoxyethylene ether pyrolysis reaction device for leather chemical detection includes: a heating jacket 1, a container 2, a connector 3, and a condensation mechanism 4.

[0038] Among them, heating jacket 1 is an electric heating jacket, a type of general laboratory heating instrument, used for precise temperature control of container 2, maintaining the temperature at 90±2℃ during the alkylphenol polyoxyethylene ether pyrolysis reaction.

[0039] The container 2 is mounted on the heating jacket 1. Specifically, the container 2 is a glass flask. The heating surface of the heating jacket 1 is an arc shape that matches the bottom shape of the container 2.

[0040] The connector 3 is located at the upper end of the container 2. The connector 3 includes an end cap 31, and a steam port 32 and a reflux port 33 located on the end cap 31. The end cap 31 is detachably connected to the bottle mouth of the container 2. Specifically, the end cap 31 is made of rubber and is inserted into the bottle mouth of the container 2. To ensure a tighter connection, a metal clamp can be tied to the end cap 31 to prevent the steam pressure inside the container 2 from becoming too high during the reflux process and pushing the end cap 31 out of the container 2.

[0041] like Figure 2 and Figure 3 As shown, the condensation mechanism 4 includes a cylinder 41, which includes an outer cavity 42, an inner cavity 43, and a spiral condenser tube 44.

[0042] The outer cavity 42 is used to fill cooling water, and is configured with bottom water inlet and top water outlet. The outer cavity 42 is connected to an external cooling water circulation system.

[0043] The inner cavity 43 is located inside the outer cavity 42, and several water passage holes 45 are provided on the surface of the inner cavity 43. The inner cavity 43 is configured as a frustum-shaped cover with a closed upper end and an open lower end, and the lower end of the inner cavity 43 is fixedly connected to the inner bottom surface of the cylinder 41.

[0044] A spiral condenser tube 44 is disposed between the inner cavity 43 and the outer cavity 42. The spiral condenser tube 44 is configured such that both the spiral radius and the tube diameter gradually decrease from bottom to top; the lower end diameter of the spiral condenser tube 44 is set in a ratio of 2-5:1 to the upper end diameter. Viewed from bottom to top, the spiral radius of each turn of the spiral condenser tube 44 is larger than that of the next turn; a recess 49 is provided at the connection between the spiral condenser tube 44 and the return pipe 47, and the return pipe 47 is disposed at the bottom of the recess 49; in the spiral condenser tube 44, along the steam flow path, the recess 49 is located directly in front of the steam inlet 46.

[0045] This invention features a spiral condenser tube 44, which is configured such that both the spiral radius and the tube diameter gradually decrease from bottom to top. Steam enters from the lower end of the spiral condenser tube 44, i.e., at the point of maximum diameter, allowing for ample space upon entry and reducing obstruction to the flow of condensate to the return pipe 47. Furthermore, as the steam moves deeper into the spiral condenser tube 44, the decreasing diameter further reduces the space available for the steam, gradually increasing the proportion of steam contacting the inner wall of the condenser tube and improving condensation efficiency.

[0046] In this invention, the spiral condenser tube 44 is disposed between the inner cavity 43 and the outer cavity 42. The inner cavity 43 is configured as a frustum-shaped cover with a closed upper end and an open lower end. The lower end of the inner cavity 43 is fixedly connected to the inner bottom surface of the cylinder 41. That is to say, cooling water can only enter from the bottom of the inner cavity 43, first filling the inner cavity 43, and then flowing out from several water passages 45 on the side wall of the inner cavity 43, before contacting the spiral condenser tube 44 for heat exchange and steam condensation. The structural design of the inner cavity 43 makes the contact time between the cooling water and the upper and lower ends of the spiral condenser tube 44 close, solving the problem of insufficient condensation effect at the upper end caused by sequential contact from bottom to top in the prior art.

[0047] The lower end of the spiral condenser 44 is provided with a steam inlet 46 and a return pipe 47, and the steam inlet 46 is connected to the steam port 32; the upper end of the spiral condenser 44 is connected to a steam guide pipe 48, and both the steam guide pipe 48 and the return pipe 47 are connected to the return port 33.

[0048] This invention features a recess 49 at the connection between the spiral condenser tube 44 and the return pipe 47. The return pipe 47 is positioned at the bottom of the recess 49, and the recess 49 is located directly in front of the steam inlet 46 when viewed along the steam flow path. This ensures that the condensate in the spiral condenser tube 44 flows downwards into the recess 49 instead of flowing into the steam inlet 46, thus solving the problem in the prior art where the returned condensate encounters the generated steam in the pipe, preventing the steam from entering the condenser mechanism 4.

[0049] like Figure 4 As shown, the steam port 32 is located on the upper surface of the end cap 31, with its central axis set vertically to ensure optimal steam outlet; the return port 33 is located on the side of the end cap 31, with the angle between the central axis of the return port 33 and the central axis of the steam port 32 being 30-60°. The return port 33 on one side is not the main channel for steam, and the return port 33 is tilted downwards to facilitate the flow of condensate.

[0050] In this embodiment, the lower end of the cylinder 41 is higher than the upper end of the container 2 to facilitate the return of condensate.

[0051] In use, the sample extract or processing aid sample solution is added to a container 2 containing aluminum iodide. The container 2 is placed on a heating jacket 1 and heated to 92±2℃, and maintained for 30±5 minutes. Before heating, the connector 3 is connected to the mouth of the container 2, and the steam inlet 46 is connected to the steam outlet 32, and the steam guide pipe 48 and the return pipe 47 are connected to the return outlet 33 through pipes. The specific reflux process is as follows: Cooling water has filled the inner cavity 43 and the outer cavity 42. Most of the steam generated in container 2 enters the spiral condenser tube 44 through the steam port 32 to the steam inlet 46. The steam moves along the spiral condenser tube 44. During this process, the steam continuously condenses into water and flows along the tube wall of the spiral condenser tube 44 into the depression 49. It then flows through the return pipe 47 to the return port 33 and enters the container 2 to form a reflux. At the same time, the excess steam merges with the condensate through the upper steam guide pipe 48 of the spiral condenser tube 44 and enters the container 2 through the return port 33 to avoid excessive pressure in the spiral condenser tube 44.

[0052] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A multi-channel alkylphenol polyethoxylate cleavage reaction device for leather chemical detection, characterized in that, The utility model relates to a heating jacket (1), a container (2) arranged on the heating jacket (1), a connecting piece (3) arranged on the upper end of the container (2), the connecting piece (3) comprising an end cover (31) and a steam port (32) and a reflux port (33) arranged on the end cover (31), a condensing mechanism (4) comprising a cylinder body (41), the cylinder body (41) comprising an outer cavity (42) filled with cooling water, configured to fill water at the bottom and discharge water at the top, an inner cavity (43) arranged in the outer cavity (42), the surface of the inner cavity (43) being provided with a plurality of water holes (45), a spiral condensing pipe (44) arranged between the inner cavity (43) and the outer cavity (42), the spiral condensing pipe (44) being configured to gradually decrease in spiral radius and pipe diameter from bottom to top, wherein the lower end of the spiral condensing pipe (44) is provided with a steam inlet (46) and a reflux pipe (47), the steam inlet (46) being connected with the steam port (32), the upper end of the spiral condensing pipe (44) being connected with a steam guide pipe (48), the steam guide pipe (48) and the reflux pipe (47) being connected with the reflux port (33). The heating surface of the heating jacket (1) is in the shape of a circular arc matching the shape of the bottom of the container (2). The end cover (31) is detachably connected with the bottle mouth of the container (2). The steam port (32) is arranged on the upper surface of the end cover (31), with the axis arranged vertically; the reflux port (33) is arranged on the side surface of the end cover (31), and the included angle between the central axis of the reflux port (33) and the central axis of the steam port (32) is 30-60°. The lower end position of the cylinder body (41) is higher than the upper end of the container (2). The inner cavity (43) is in the shape of a circular truncated cone with the upper end closed and the lower end open, and the lower end of the inner cavity (43) is fixedly connected with the inner bottom surface of the cylinder body (41). The lower end pipe diameter and the upper end pipe diameter of the spiral condensing pipe (44) are arranged in a ratio of 2-5:

1. From bottom to top, the spiral radius of each circle of the spiral condensing pipe (44) is greater than that of the next circle. The connection between the spiral condensing pipe (44) and the reflux pipe (47) is provided with a recess (49), and the reflux pipe (47) is arranged at the bottom of the recess (49).

2. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: In the spiral condensing pipe (44), the recess (49) is arranged in front of the steam inlet (46) along the steam running path.

3. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 4. The multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 5. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 6. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 7. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 8. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 9. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 1, characterized in that: ​ 10. A multi-channel alkylphenol ethoxylate cleavage reaction device for leather chemical detection according to claim 9, characterized in that: ​

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