Nitrogen separation and recovery equipment for tire vulcanization

Abstract

The utility model discloses nitrogen separation and recovery equipment for tire vulcanization, and relates to the technical field of nitrogen recovery and utilization. The device structurally comprises a recovered nitrogen mixing storage tank, a filter separator, a heat exchange cooler, a nitrogen buffer storage tank and a liquefied nitrogen storage tank which are sequentially connected through pipelines, a sucking pump and a first electromagnetic pipeline valve are mounted on a pipeline at the gas inlet end of the recycled nitrogen mixing storage tank; a gas regulating valve is mounted on a pipeline between the recovered nitrogen mixing storage tank and the filter separator; a compressor and a second electromagnetic pipeline valve are mounted on a pipeline between the nitrogen buffer storage tank and the liquefied nitrogen storage tank; and a third electromagnetic pipeline valve is mounted on an output pipeline of the liquefied nitrogen storage tank. According to the utility model, through a series of treatment on recovered nitrogen, not only is the cyclic utilization rate of resources improved, but also the purity and supply stability of the nitrogen are guaranteed through multiple technical means, meanwhile, energy conservation, emission reduction and automatic control are realized, and remarkable economic and environmental benefits are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of nitrogen recovery and utilization technology, and in particular relates to a nitrogen separation and recovery device for tire vulcanization. Background Technology

[0002] Vulcanization is a crucial step in tire manufacturing, where nitrogen is widely used as a protective gas to prevent oxidation and contamination. However, in traditional vulcanization processes, nitrogen is typically released after a single use, resulting in resource waste. Furthermore, unreacted sulfur and its sulfides may adversely affect the production environment. With increasing environmental awareness and the need to control production costs, developing equipment capable of recovering and reusing nitrogen generated during tire vulcanization is of paramount importance.

[0003] While some nitrogen recovery systems currently available on the market can achieve nitrogen recycling to a certain extent, they still have some shortcomings. Therefore, this utility model aims to provide a nitrogen separation and recovery device for tire vulcanization. Utility Model Content

[0004] The purpose of this utility model is to provide a nitrogen separation and recovery device for tire vulcanization. Through a series of treatments on the recovered nitrogen, not only is the recycling rate of resources improved, but also the purity and supply stability of nitrogen are guaranteed through multiple technical means.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a nitrogen separation and recovery device for tire vulcanization, comprising a nitrogen recovery mixing tank, a filter separator, a heat exchanger, a nitrogen slow storage tank, and a liquefied nitrogen storage tank connected in sequence by pipelines; a vacuum pump and a first electromagnetic pipeline valve are installed on the pipeline at the inlet end of the nitrogen recovery mixing tank; a gas regulating valve is installed on the pipeline between the nitrogen recovery mixing tank and the filter separator; a compressor and a second electromagnetic pipeline valve are installed on the pipeline between the nitrogen slow storage tank and the liquefied nitrogen storage tank; and a third electromagnetic pipeline valve is installed on the output pipeline of the liquefied nitrogen storage tank.

[0007] As a preferred embodiment of this utility model, a refrigerated dryer is installed on the pipeline between the heat exchange cooler and the nitrogen slow storage tank.

[0008] As a preferred embodiment of this utility model, the nitrogen slow storage tank is equipped with a pressure switch for controlling the start and stop of the compressor and the on / off state of the second electromagnetic pipeline valve.

[0009] As a preferred embodiment of this utility model, the filter separator includes a cylindrical body with an internal thread at the upper end; an isolation plate is fixed to the inner wall of the cylindrical body near the bottom; an air inlet pipe is fixed to the outer wall of the lower end of the cylindrical body, and the air inlet pipe is located below the isolation plate; an activated carbon layer is filled inside the cylindrical body above the isolation plate; a porous pressure plate is placed above the activated carbon layer; an end cap is threaded to the upper end of the cylindrical body; and an air outlet pipe is fixed through the end cap.

[0010] As a preferred embodiment of this utility model, the heat exchange cooler includes a rectangular water tank; a heat exchange inlet chamber and a heat exchange outlet chamber are respectively fixed through opposite side walls of the rectangular water tank; the heat exchange inlet chamber and the heat exchange outlet chamber are connected by a plurality of evenly distributed heat exchange pipes; a heat exchange inlet pipe is fixed through the outer wall of the heat exchange inlet chamber; a heat exchange outlet pipe is fixed through the outer wall of the heat exchange outlet chamber; a water inlet pipe and a water outlet pipe are fixed through one side of the rectangular water tank; the water inlet pipe is located below the plurality of heat exchange pipes; the water outlet pipe is located above the plurality of heat exchange pipes.

[0011] This utility model has the following beneficial effects:

[0012] 1. This utility model reduces the demand for new nitrogen by recycling and reusing nitrogen generated during the tire vulcanization process, thereby lowering production costs and contributing to environmental protection.

[0013] 2. The activated carbon layer in the filter separator of this utility model can effectively adsorb sulfur and its sulfides, ensuring that the recovered nitrogen has high purity and meeting the requirements for high-purity nitrogen in the tire vulcanization process.

[0014] 3. The use of the gas regulating valve of this utility model avoids the impact of large flow of gas on downstream equipment, ensures the stability of nitrogen supply, and is conducive to the normal operation of downstream processing equipment and the improvement of nitrogen quality.

[0015] 4. The installation of this utility model refrigerated dryer helps to remove moisture from the recovered gas; at the same time, the design of the heat exchange cooler realizes energy recovery and reuse, further improving the energy efficiency of the system.

[0016] 5. This utility model enables the system to automatically start and stop the compressor and control the nitrogen supply according to actual needs through the application of electromagnetic pipeline valves and pressure switches, thereby improving the system's intelligence level and ease of operation.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the nitrogen separation and recovery equipment for tire vulcanization according to this utility model.

[0020] Figure 2 This is a schematic diagram of the axial cross-section of the filter separator.

[0021] Figure 3 This is a schematic diagram of the heat exchange cooler.

[0022] Figure 4 This is a schematic diagram of the axial cross-section of the heat exchanger cooler.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1-Recovered nitrogen mixing storage tank, 2-Filter separator, 3-Heat exchange cooler, 4-Nitrogen slow storage tank, 5-Liquefied nitrogen storage tank, 6-Air pump, 7-First electromagnetic pipeline valve, 8-Gas regulating valve, 9-Compressor, 10-Second electromagnetic pipeline valve, 11-Third electromagnetic pipeline valve, 12-Pressure switch, 21-Cylindrical body, 22-Isolation orifice plate, 23-Inlet pipe, 24-Activated carbon layer, 25-Porous pressure plate, 26-End cap, 27-Outlet pipe, 31-Rectangular water tank, 32-Heat exchange inlet chamber, 33-Heat exchange outlet chamber, 34-Heat exchange tube, 35-Heat exchange inlet pipe, 36-Heat exchange outlet pipe, 37-Water inlet pipe, 38-Water outlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1:

[0027] Please see Figure 1-4 As shown, this utility model is a nitrogen separation and recovery device for tire vulcanization, including a nitrogen recovery mixing storage tank 1, a filter separator 2, a heat exchange cooler 3, a nitrogen slow storage tank 4, and a liquefied nitrogen storage tank 5 connected in sequence by pipelines.

[0028] A vacuum pump 6 and a first electromagnetic valve 7 are installed on the pipeline at the inlet end of the nitrogen mixing storage tank 1. The pipeline is connected to the exhaust port of the tire vulcanizing device. After the tire vulcanizing is completed, the vacuum pump 6 and the first electromagnetic valve 7 are opened simultaneously. The vacuum pump 6 pumps the nitrogen, vapor, sulfur and its sulfides in the tire vulcanizing device to the nitrogen mixing storage tank 1 for temporary storage.

[0029] A gas regulating valve 8 is installed on the pipeline between the nitrogen recovery mixing tank 1 and the filter separator 2. The nitrogen recovery mixing tank 1, together with the gas regulating valve 8, delivers the mixed gas in the nitrogen mixing tank 1 to the downstream equipment in a small and stable flow rate for continuous and stable processing, avoiding the incomplete separation process caused by intermittent large amounts of gas entering the downstream equipment.

[0030] The filter separator 2 includes a cylindrical body 21 with internal threads at the top. An isolation plate 22 is fixed to the inner wall of the cylindrical body 21 near the bottom. An air inlet pipe 23 is fixed to the outer wall of the lower end of the cylindrical body 21, and the air inlet pipe 23 is located below the isolation plate 22. An activated carbon layer 24 is filled inside the cylindrical body 21 above the isolation plate 22. A porous pressure plate 25 is placed above the activated carbon layer 24. An end cap 26 is threaded to the upper end of the cylindrical body 21. An air outlet pipe 27 is fixed through the end cap 26. The filter separator 2 adsorbs sulfur and its sulfides into the activated carbon layer 24, ensuring the purity of the recovered nitrogen.

[0031] A compressor 9 and a second solenoid valve 10 are installed on the pipeline between the nitrogen storage tank 4 and the liquefied nitrogen storage tank 5. The compressor 9 compresses the nitrogen into liquid nitrogen, reducing its volume, and stores it in the liquefied nitrogen storage tank 5 for later use.

[0032] A third electromagnetic pipeline valve 11 is installed on the output pipeline of the liquefied nitrogen storage tank 5. The output pipeline of the liquefied nitrogen storage tank 5 is connected to the nitrogen supply equipment of the tire vulcanizing unit, and the third electromagnetic pipeline valve 11 after the liquefied nitrogen storage tank 5 provides nitrogen supply to the nitrogen supply equipment.

[0033] In order to remove as much moisture as possible from the recovered gas, a refrigerated dryer is installed on the pipeline between the heat exchanger 3 and the nitrogen storage tank 4.

[0034] In order to reduce the working time of compressor 9 and reduce system energy consumption, a pressure switch 12 is installed on nitrogen storage tank 4 to control the start and stop of compressor 9 and the on / off state of second solenoid pipeline valve 10.

[0035] The heat exchange cooler 3 includes a rectangular water tank 31. A heat exchange inlet chamber 32 and a heat exchange outlet chamber 33 are respectively fixed through opposite side walls of the rectangular water tank 31. The heat exchange inlet chamber 32 and the heat exchange outlet chamber 33 are connected by several evenly distributed heat exchange pipes 34. A heat exchange inlet pipe 35 is fixed through the outer wall of the heat exchange inlet chamber 32. A heat exchange outlet pipe 36 is fixed through the outer wall of the heat exchange outlet chamber 33. A water inlet pipe 37 and a water outlet pipe 38 are fixed through one side of the rectangular water tank 31. The water inlet pipe 37 is located below the heat exchange pipes 34. The water outlet pipe 38 is located above the heat exchange pipes 34. The water inlet pipe 37 is connected to a water supply terminal, and the water outlet pipe 38 is connected to the steam generator makeup water tank of the tire vulcanizing reactor for energy recovery and reuse.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A nitrogen separation and recovery device for tire vulcanization, characterized in that: It includes a nitrogen recovery mixing tank (1), a filter separator (2), a heat exchanger (3), a nitrogen slow storage tank (4), and a liquefied nitrogen storage tank (5), which are connected in sequence by pipelines. The nitrogen recovery mixing tank (1) is equipped with a vacuum pump (6) and a first electromagnetic pipeline valve (7) on the pipeline at the air inlet end. A gas regulating valve (8) is installed on the pipeline between the recovered nitrogen mixing storage tank (1) and the filter separator (2); A compressor (9) and a second electromagnetic pipeline valve (10) are installed on the pipeline between the nitrogen slow storage tank (4) and the liquefied nitrogen storage tank (5). A third electromagnetic pipeline valve (11) is installed on the output pipeline of the liquefied nitrogen storage tank (5).

2. The nitrogen separation and recovery equipment for tire vulcanization according to claim 1, characterized in that, A refrigerated dryer is installed on the pipeline between the heat exchanger (3) and the nitrogen storage tank (4).

3. The nitrogen separation and recovery equipment for tire vulcanization according to claim 1, characterized in that, The nitrogen storage tank (4) is equipped with a pressure switch (12) for controlling the start and stop of the compressor (9) and the opening and closing of the second electromagnetic pipeline valve (10).

4. The nitrogen separation and recovery equipment for tire vulcanization according to claim 1, characterized in that, The filter separator (2) includes a cylindrical body (21) with an inner thread at the upper end; an isolation plate (22) is fixed on the inner wall of the cylindrical body (21) near the bottom; an air inlet pipe (23) is fixed on the outer wall of the lower end of the cylindrical body (21), and the air inlet pipe (23) is located below the isolation plate (22); an activated carbon layer (24) is filled inside the cylindrical body (21) above the isolation plate (22); a porous pressure plate (25) is placed above the activated carbon layer (24); an end cap (26) is threaded to the upper end of the cylindrical body (21); and an air outlet pipe (27) is fixed through the end cap (26).

5. The nitrogen separation and recovery equipment for tire vulcanization according to claim 1, characterized in that, The heat exchange cooler (3) includes a rectangular water tank (31); a heat exchange inlet chamber (32) and a heat exchange outlet chamber (33) are respectively fixed through one opposite side wall of the rectangular water tank (31); the heat exchange inlet chamber (32) and the heat exchange outlet chamber (33) are connected by a plurality of evenly distributed heat exchange tubes (34); a heat exchange inlet pipe (35) is fixed through the outer wall of the heat exchange inlet chamber (32); a heat exchange outlet pipe (36) is fixed through the outer wall of the heat exchange outlet chamber (33); a water inlet pipe (37) and a water outlet pipe (38) are fixed through one side of the rectangular water tank (31); the water inlet pipe (37) is located below the plurality of heat exchange tubes (34); the water outlet pipe (38) is located above the plurality of heat exchange tubes (34).

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